/* ==========================================================================
   CORE TOKENS — Unified Dark Gamified Design System v3.20
   ========================================================================== */
:root {
  /* Background */
  --bg: #0F1E3D;
  --bg2: #14254B;
  --bg-gradient: linear-gradient(180deg, #0F1E3D 0%, #14254B 100%);

  /* Surfaces */
  --card: #1B2F5C;
  --card2: #22376A;
  --card-hover: #29427C;
  --card-gradient: linear-gradient(180deg, #2C4A86 0%, #254276 100%);
  --card-gradient-hover: linear-gradient(180deg, #30518F 0%, #28467C 100%);

  /* Borders */
  --border: rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.12);
  --border-accent: rgba(123,109,255,0.2);

  /* Text */
  --text: #FFFFFF;
  --muted: #AFC2E8;
  --muted-subtle: #7F93B8;

  /* Accent colors */
  --purple: #7B6DFF;
  --purple2: #9D8FFF;
  --gold: #F2D64B;
  --coral: #FF6B6B;
  --green: #38D27A;
  --blue: #6DB7FF;

  /* Interaction */
  --radius: 18px;
  --radius-sm: 14px;
  --radius-lg: 24px;
  --shadow: 0 8px 32px rgba(0,0,0,0.4);
  --shadow-card: 0 14px 40px rgba(6,14,35,0.45), inset 0 1px 0 rgba(255,255,255,0.05);
  --focus-ring: 0 0 0 2px rgba(123,109,255,0.30);
  --transition: 150ms ease;
}

/* ==========================================================================
   BASE RESET / LAYOUT
   ========================================================================== */
  * { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }

  html, body {
    width: 100%;
    min-height: 100%;
    background: var(--bg-gradient);
  }

  body {
    font-family: 'Nunito', sans-serif;
    background: var(--bg-gradient);
    color: var(--text);
    min-height: 100vh;
    overflow-x: hidden;
    padding-bottom: env(safe-area-inset-bottom);
  }

  /* Stars background */
  body::before {
    content: '';
    position: fixed; inset: 0;
    background-image:
      radial-gradient(1px 1px at 10% 20%, rgba(255,255,255,0.5) 0%, transparent 100%),
      radial-gradient(1px 1px at 80% 10%, rgba(255,255,255,0.4) 0%, transparent 100%),
      radial-gradient(1px 1px at 50% 70%, rgba(255,255,255,0.3) 0%, transparent 100%),
      radial-gradient(1px 1px at 30% 90%, rgba(255,255,255,0.5) 0%, transparent 100%),
      radial-gradient(1px 1px at 90% 50%, rgba(255,255,255,0.4) 0%, transparent 100%),
      radial-gradient(1px 1px at 20% 60%, rgba(255,255,255,0.3) 0%, transparent 100%),
      radial-gradient(1px 1px at 70% 80%, rgba(255,255,255,0.5) 0%, transparent 100%),
      radial-gradient(1px 1px at 40% 40%, rgba(255,255,255,0.3) 0%, transparent 100%),
      radial-gradient(2px 2px at 60% 30%, rgba(255,255,255,0.2) 0%, transparent 100%),
      radial-gradient(1px 1px at 15% 45%, rgba(255,255,255,0.4) 0%, transparent 100%);
    pointer-events: none; z-index: 0;
  }

  .screen {
    display: none; flex-direction: column; min-height: 100vh;
    position: relative; z-index: 1;
    animation: fadeIn 0.3s ease;
  }
  .screen.active { display: flex; }
  @keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

  /* ==========================================================================
     SHARED UI COMPONENTS
     ========================================================================== */
  /* Header */
  .header {
    padding: 16px 20px;
    display: flex; align-items: center; gap: 12px;
    background: linear-gradient(180deg, rgba(123,109,255,0.12) 0%, transparent 100%);
    border-bottom: 1px solid var(--border);
  }
  .back-btn {
    width: 44px; height: 44px; border-radius: 14px;
    background: rgba(255,255,255,0.06); border: 1px solid var(--border);
    cursor: pointer;
    color: var(--text); font-size: 18px; display: flex; align-items: center; justify-content: center;
    transition: all var(--transition);
  }
  .back-btn:hover { background: rgba(255,255,255,0.10); border-color: var(--border-strong); }
  .back-btn:active { transform: scale(0.97); background: rgba(123,109,255,0.15); border-color: rgba(123,109,255,0.25); }
  .back-btn:focus-visible { box-shadow: var(--focus-ring); }
  .header-title { font-family: 'Fredoka One', cursive; font-size: 22px; font-weight: 700; color: #FFFFFF; flex: 1; }

  /* Cards */
  .card {
    background: var(--card-gradient);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow-card);
    position: relative;
    overflow: hidden;
    transition: all var(--transition);
  }
  .card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.05), transparent);
    pointer-events: none;
  }
  .card:hover { background: var(--card-gradient-hover); }
  .card2 {
    background: var(--card2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    transition: all var(--transition);
  }
  .card2:hover { background: var(--card-hover); border-color: var(--border-strong); }

/* ==========================================================================
   SUBJECT TABS (Tutor View) — Redesigned v2 (task-018)
   ========================================================================== */
.subject-tabs {
  display: flex;
  background: linear-gradient(180deg, #1B2F5C 0%, #172A52 100%);
  margin: 12px 16px;
  border-radius: 14px;
  padding: 4px;
  border: 1px solid rgba(255,255,255,0.06);
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
  gap: 4px;
}
.subject-tab {
  flex: 1;
  padding: 10px 8px;
  text-align: center;
  font-size: 13px;
  font-weight: 700;
  color: #AFC2E8;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  user-select: none;
}
.subject-tab:hover {
  color: #D0D8F0;
  background: rgba(255,255,255,0.04);
}
.subject-tab:active {
  transform: scale(0.96);
}
.subject-tab.active {
  background: linear-gradient(135deg, #7B6DFF 0%, #6DB7FF 100%);
  color: #FFFFFF;
  font-weight: 800;
  box-shadow: 0 2px 12px rgba(123,109,255,0.35), 0 0 0 1px rgba(123,109,255,0.2);
}
.subject-tab-content {
  display: none;
  animation: fadeInTopic 0.3s ease;
}
.subject-tab-content.active {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

@keyframes fadeInTopic {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   TOPIC CARD V2 — Redesigned (task-018)
   Deep navy gradient, rounded shape, soft shadows, gamified UI
   ========================================================================== */

/* Topic card shell (used in topics tab) */
.topic-card-v2 {
  background: linear-gradient(180deg, #2C4A86 0%, #254276 100%);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 24px;
  padding: 18px;
  box-shadow: 0 14px 40px rgba(6,14,35,0.45), inset 0 1px 0 rgba(255,255,255,0.05);
  cursor: pointer;
  transition: all 150ms ease;
  position: relative;
  overflow: hidden;
}

/* Subtle top highlight for depth */
.topic-card-v2::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.05), transparent);
  pointer-events: none;
}

/* Hover lift effect */
.topic-card-v2:hover {
  transform: translateY(-2px);
  background: linear-gradient(180deg, #30518F 0%, #28467C 100%);
  box-shadow: 0 14px 40px rgba(6,14,35,0.45), inset 0 1px 0 rgba(255,255,255,0.05);
}

/* Press animation */
.topic-card-v2:active {
  transform: translateY(0) scale(0.985);
  box-shadow: 0 8px 24px rgba(8,18,44,0.4);
}

/* Topic card body layout */
.topic-card-v2-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Top row: icon + title + status */
.topic-card-v2-top {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

/* Colored icon square */
.topic-card-v2-icon {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: linear-gradient(135deg, #7B6DFF 0%, #5F7BFF 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: #0F1E3D;
  flex-shrink: 0;
  box-shadow: 0 6px 16px rgba(123,109,255,0.16);
  transition: all 150ms ease;
}

.topic-card-v2:hover .topic-card-v2-icon {
  box-shadow: 0 8px 20px rgba(123,109,255,0.20);
}

/* Icon with different accent colors */
.topic-card-v2-icon.accent-green {
  background: linear-gradient(135deg, #5AAEFF 0%, #6B7DFF 100%);
  box-shadow: 0 6px 16px rgba(90,174,255,0.16);
  color: #0F1E3D;
}
.topic-card-v2-icon.accent-blue {
  background: linear-gradient(135deg, #5AAEFF 0%, #6B7DFF 100%);
  box-shadow: 0 6px 16px rgba(90,174,255,0.16);
  color: #0F1E3D;
}
.topic-card-v2-icon.accent-yellow {
  background: linear-gradient(135deg, #F2D64B 0%, #E0C030 100%);
  box-shadow: 0 6px 16px rgba(242,214,75,0.13);
  color: #0F1E3D;
}

/* Topic title */
.topic-card-v2-title {
  flex: 1;
  min-width: 0;
  padding-top: 2px;
  margin-bottom: 12px;
}

.topic-card-v2-title-text {
  font-size: 18px;
  font-weight: 700;
  color: #FFFFFF;
  line-height: 1.25;
  letter-spacing: -0.2px;
}

/* Status pills row */
.topic-card-v2-status-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 8px;
}

/* Modern soft pill badges */
.topic-card-v2-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.3;
  white-space: nowrap;
}

.topic-card-v2-pill.pill-green {
  background: rgba(56,210,122,0.12);
  color: #38D27A;
  border: 1px solid rgba(56,210,122,0.28);
}
.topic-card-v2-pill.pill-blue {
  background: rgba(109,183,255,0.12);
  color: #6DB7FF;
  border: 1px solid rgba(109,183,255,0.28);
}
.topic-card-v2-pill.pill-gray {
  background: rgba(255,255,255,0.05);
  color: #C7D2E6;
  border: 1px solid rgba(255,255,255,0.10);
}
.topic-card-v2-pill.pill-yellow {
  background: rgba(242,214,75,0.12);
  color: #F2D64B;
  border: 1px solid rgba(242,214,75,0.28);
}

/* Last activity text */
.topic-card-v2-sub {
  font-size: 13px;
  color: #AFC2E8;
  margin-top: 6px;
  line-height: 1.45;
}

/* Action buttons row */
.topic-card-v2-actions {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}

/* Primary action button (Задачи) */
.topic-card-v2-btn-primary {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 44px;
  padding: 0 18px;
  border-radius: 16px;
  border: none;
  background: linear-gradient(135deg, #6B63F6 0%, #6FA0F5 100%);
  color: #FFFFFF;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: all 150ms ease;
  box-shadow: 0 4px 12px rgba(111,160,245,0.18);
}
.topic-card-v2-btn-primary:hover {
  background: linear-gradient(135deg, #736BFF 0%, #78A8FF 100%);
  box-shadow: 0 6px 16px rgba(111,160,245,0.22);
  transform: translateY(-1px);
}
.topic-card-v2-btn-primary:active {
  transform: scale(0.97);
  box-shadow: 0 4px 12px rgba(111,160,245,0.18);
}
.topic-card-v2-btn-primary:focus-visible {
  box-shadow: 0 0 0 2px rgba(123,109,255,0.30);
}

/* Secondary action button (Инфо) */
.topic-card-v2-btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 44px;
  padding: 0 16px;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.02);
  color: #E2ECFF;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: all 150ms ease;
}
.topic-card-v2-btn-secondary:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.18);
  color: #FFFFFF;
}
.topic-card-v2-btn-secondary:active {
  transform: scale(0.98);
}
.topic-card-v2-btn-secondary:focus-visible {
  box-shadow: 0 0 0 2px rgba(123,109,255,0.30);
}

/* Empty state for topics */
.topic-card-v2-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 48px 24px;
  gap: 12px;
}
.topic-card-v2-empty-icon {
  font-size: 56px;
  opacity: 0.6;
}
.topic-card-v2-empty-title {
  font-size: 17px;
  font-weight: 800;
  color: #FFFFFF;
}
.topic-card-v2-empty-sub {
  font-size: 14px;
  color: #AFC2E8;
  max-width: 260px;
  line-height: 1.4;
}

/* Accent glow for active topic */
.topic-card-v2.is-active {
  border-color: rgba(123,109,255,0.18);
  box-shadow: 0 0 0 1px rgba(123,109,255,0.1), 0 4px 16px rgba(123,109,255,0.08);
}
.topic-card-v2.is-active::after {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, #7B6DFF 0%, #6DB7FF 100%);
  border-radius: 4px 0 0 4px;
}

/* Legacy compatibility: keep old class mapping */
.subject-topic-card {
  /* Maps to topic-card-v2 styles via renderSubjectTopicCard */
}

/* Subject Track Card */
.subject-track-card {
  margin: 0 20px 12px;
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  transition: all var(--transition);
  background: var(--card-gradient);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 14px 16px;
  box-shadow: var(--shadow-card);
}
.subject-track-card:hover { background: var(--card-gradient-hover); }
.subject-track-card:active {
  transform: scale(0.98);
}

  /* Buttons */
  .btn {
    display: flex; align-items: center; justify-content: center; gap: 8px;
    padding: 14px 24px; border-radius: var(--radius-sm); border: none;
    font-family: 'Nunito', sans-serif; font-size: 16px; font-weight: 800;
    cursor: pointer; transition: all var(--transition); width: 100%; text-align: center;
    position: relative;
  }
  .btn:hover { transform: translateY(-1px); }
  .btn:active { transform: scale(0.97); }
  .btn:focus-visible { box-shadow: var(--focus-ring); }
  .btn-primary {
    background: linear-gradient(135deg, #6B63F6 0%, #6FA0F5 100%);
    color: #fff;
    box-shadow: 0 4px 12px rgba(111,160,245,0.18);
  }
  .btn-primary:hover {
    background: linear-gradient(135deg, #736BFF 0%, #78A8FF 100%);
    box-shadow: 0 6px 16px rgba(111,160,245,0.22);
  }
  .btn-secondary {
    background: var(--card2);
    color: var(--text);
    border: 1px solid var(--border);
  }
  .btn-secondary:hover { background: var(--card-hover); border-color: var(--border-strong); }
  .btn-gold {
    background: linear-gradient(135deg, var(--gold), #e0c53a);
    color: #14254B;
    box-shadow: 0 4px 12px rgba(242,214,75,0.18);
  }
  .btn-gold:hover { box-shadow: 0 6px 16px rgba(242,214,75,0.25); }
  .btn-green {
    background: linear-gradient(135deg, var(--green), #2FBF68);
    color: #fff;
    box-shadow: 0 4px 12px rgba(56,210,122,0.18);
  }
  .btn-green:hover { box-shadow: 0 6px 16px rgba(56,210,122,0.22); }
  .btn-coral {
    background: linear-gradient(135deg, var(--coral), #e04545);
    color: #fff;
  }
  .btn-red {
    background: linear-gradient(135deg, #dc3545, #c82333);
    color: #fff;
  }
  .btn-purple {
    background: linear-gradient(135deg, var(--purple), #5F7BFF);
    color: #fff;
    box-shadow: 0 4px 12px rgba(123,109,255,0.18);
  }
  .btn-purple:hover { box-shadow: 0 6px 16px rgba(123,109,255,0.22); }
  .btn-blue {
    background: linear-gradient(135deg, var(--blue), #5AAEFF);
    color: #0F1E3D;
    box-shadow: 0 4px 12px rgba(109,183,255,0.18);
  }
  .btn-blue:hover { box-shadow: 0 6px 16px rgba(109,183,255,0.22); }
  .btn-sm { padding: 8px 16px; font-size: 14px; border-radius: 12px; width: auto; }

  /* Tabs */
  .tab-btn {
    transition: all var(--transition);
    border-radius: 12px;
    padding: 8px 14px;
  }
  .tab-btn:hover { background: rgba(255,255,255,0.04); }
  .tab-btn:active { transform: scale(0.97); }
  .tab-btn:focus-visible { box-shadow: var(--focus-ring); }
  .tab-btn.active {
    background: rgba(56,210,122,0.15) !important;
    border-color: rgba(56,210,122,0.3) !important;
    color: var(--green) !important;
  }

  /* Smooth tab content transition */
  .qt-tab-content {
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.25s ease, transform 0.25s ease;
  }
  .qt-tab-content.active {
    opacity: 1;
    transform: translateY(0);
  }

  /* AI Context Card */
  .qt-ai-context-card {
    background: rgba(123,109,255,0.08);
    border: 1px solid rgba(123,109,255,0.2);
    border-radius: 14px;
    padding: 12px 14px;
  }

  /* Input */
  .input-group { display: flex; flex-direction: column; gap: 6px; }
  .input-label { font-size: 13px; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; }
  .input-field {
    background: var(--card2); border: 1px solid var(--border); border-radius: 16px;
    padding: 14px 16px; color: var(--text); font-family: 'Nunito', sans-serif; font-size: 16px;
    outline: none; transition: all var(--transition); width: 100%;
  }
  .input-field::placeholder { color: var(--muted-subtle); }
  .input-field:hover { border-color: var(--border-strong); }
  .input-field:focus { border-color: var(--purple); box-shadow: var(--focus-ring); }
  select.input-field {
    appearance: none; -webkit-appearance: none; cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23AFC2E8' d='M6 8.825a.5.5 0 0 1-.354-.146l-4-4a.5.5 0 1 1 .708-.708L6 7.617l3.646-3.646a.5.5 0 1 1 .708.708l-4 4A.5.5 0 0 1 6 8.825z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
  }
  select.input-field option { background: var(--card-hover); color: var(--text); }

  /* Badge / Chip */
  .badge {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 4px 10px; border-radius: 999px; font-size: 13px; font-weight: 700;
  }
  .badge-purple { background: rgba(123,109,255,0.15); color: var(--purple2); border: 1px solid rgba(123,109,255,0.25); }
  .badge-gold { background: rgba(242,214,75,0.15); color: var(--gold); border: 1px solid rgba(242,214,75,0.25); }
  .badge-green { background: rgba(56,210,122,0.15); color: var(--green); border: 1px solid rgba(56,210,122,0.25); }
  .badge-coral { background: rgba(255,107,107,0.15); color: var(--coral); border: 1px solid rgba(255,107,107,0.25); }
  .badge-blue { background: rgba(109,183,255,0.15); color: var(--blue); border: 1px solid rgba(109,183,255,0.25); }
  .badge-gray { background: rgba(255,255,255,0.05); color: var(--muted); border: 1px solid rgba(255,255,255,0.10); }

  /* Progress bar */
  .progress-bar {
    height: 8px; background: var(--bg2); border-radius: 99px; overflow: hidden;
  }
  .progress-fill {
    height: 100%; border-radius: 99px;
    background: linear-gradient(90deg, var(--purple), var(--blue));
    transition: width 0.5s ease;
  }

  /* Section title */
  .section-title {
    font-family: 'Fredoka One', cursive; font-size: 22px; color: var(--purple2);
    margin-bottom: 4px;
  }
  .section-sub { font-size: 14px; color: var(--muted); margin-bottom: 16px; }

  /* Divider */
  .divider { height: 1px; background: var(--border); margin: 16px 0; }

  /* Toast */
  #toast {
    position: fixed; bottom: 80px; left: 50%; transform: translateX(-50%);
    background: var(--card2); border: 1px solid var(--border);
    padding: 10px 20px; border-radius: 20px; font-size: 14px; font-weight: 700;
    z-index: 999; opacity: 0; transition: opacity 0.3s; white-space: nowrap;
    color: var(--text);
  }
  #toast.show { opacity: 1; }

  .notif-trigger {
    position: relative;
    min-width: 42px;
    justify-content: center;
    padding-left: 10px;
    padding-right: 10px;
    overflow: visible;
  }
  .notif-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    border-radius: 999px;
    background: var(--coral);
    color: #fff;
    font-size: 11px;
    line-height: 20px;
    font-weight: 900;
    border: 2px solid var(--bg);
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
  }
  .notification-item {
    background: var(--card2);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    transition: all var(--transition);
  }
  .notification-item:hover { background: var(--card-hover); border-color: var(--border-strong); }
  .notification-item.clickable {
    cursor: pointer;
    transition: border-color 0.2s, transform 0.12s;
  }
  .notification-item.clickable:hover {
    border-color: rgba(124,110,247,0.5);
  }
  .notification-item.clickable:active {
    transform: scale(0.995);
  }
  .notification-item.unread {
    border-color: rgba(124,110,247,0.5);
    box-shadow: 0 0 0 1px rgba(124,110,247,0.2) inset;
  }
  .notification-title {
    font-size: 14px;
    font-weight: 800;
    color: var(--text);
  }
  .notification-message {
    font-size: 13px;
    color: var(--muted);
    line-height: 1.45;
  }
  .notification-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    font-size: 11px;
    color: var(--muted);
  }
  .notification-actions {
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }
  .notification-open-btn {
    background: rgba(56,210,122,0.15);
    border: 1px solid rgba(56,210,122,0.35);
    color: var(--green);
    border-radius: 10px;
    padding: 4px 8px;
    font-size: 11px;
    font-weight: 800;
    cursor: pointer;
    transition: all var(--transition);
  }
  .notification-open-btn:hover { background: rgba(56,210,122,0.20); }
  .notification-open-btn:active { transform: scale(0.97); }
  .notification-read-btn {
    background: rgba(123,109,255,0.15);
    border: 1px solid rgba(123,109,255,0.35);
    color: var(--purple2);
    border-radius: 10px;
    padding: 4px 8px;
    font-size: 11px;
    font-weight: 800;
    cursor: pointer;
    transition: all var(--transition);
  }
  .notification-read-btn:hover { background: rgba(123,109,255,0.20); }
  .notification-read-btn:active { transform: scale(0.97); }

  /* Loading spinner */
  .spinner {
    width: 40px; height: 40px; border-radius: 50%;
    border: 3px solid var(--border); border-top-color: var(--purple);
    animation: spin 0.8s linear infinite; margin: 0 auto;
  }
  @keyframes spin { to { transform: rotate(360deg); } }

  /* ==========================================================================
     MODAL SHELLS — Unified Design System
     ========================================================================== */
  .modal-overlay {
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
  }
  .modal-content {
    background: linear-gradient(180deg, #1B2F5C 0%, #22376A 100%);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 24px;
    padding: 24px;
    box-shadow: 0 24px 80px rgba(0,0,0,0.45);
    animation: modalIn 0.2s ease;
  }
  @keyframes modalIn {
    from { opacity: 0; transform: scale(0.95) translateY(8px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
  }

  /* ==========================================================================
     SHARED SCREENS
     ========================================================================== */
  /* ===== WELCOME SCREEN ===== */
  #screen-welcome {
    padding: 40px 24px;
    align-items: center; justify-content: center;
    text-align: center; gap: 32px;
  }
  .logo-wrap { position: relative; display: inline-block; }
  .logo-emoji { font-size: 80px; display: block; animation: float 3s ease-in-out infinite; }
  @keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
  .logo-stars { position: absolute; font-size: 20px; }
  .logo-stars.s1 { top: 0; right: -10px; animation: twinkle 1.5s infinite; }
  .logo-stars.s2 { bottom: 10px; left: -15px; animation: twinkle 2s infinite 0.5s; }
  @keyframes twinkle { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.3; transform: scale(0.8); } }
  .app-name { font-family: 'Fredoka One', cursive; font-size: 36px; color: var(--purple2); line-height: 1; }
  .app-tagline { color: var(--muted); font-size: 16px; font-weight: 600; }
  .role-cards { display: flex; flex-direction: column; gap: 12px; width: 100%; max-width: 340px; }
  .role-card {
    background: var(--card-gradient); border: 1px solid var(--border); border-radius: var(--radius-lg);
    padding: 18px 20px; display: flex; align-items: center; gap: 16px;
    cursor: pointer; transition: all var(--transition); text-align: left;
    box-shadow: var(--shadow-card);
  }
  .role-card:hover { background: var(--card-gradient-hover); }
  .role-card:active { border-color: var(--purple); transform: scale(0.98); }
  .role-card:focus-visible { box-shadow: var(--focus-ring); }
  .role-icon { font-size: 36px; }
  .role-name { font-size: 18px; font-weight: 800; }
  .role-desc { font-size: 13px; color: var(--muted); margin-top: 2px; }

  /* ==========================================================================
     TUTOR AREA
     ========================================================================== */
  /* ===== TUTOR: API KEY SETUP ===== */
  #screen-apikey { padding: 24px; gap: 16px; }
  .api-info { background: rgba(245,197,66,0.08); border: 1px solid rgba(245,197,66,0.2); border-radius: 12px; padding: 14px; font-size: 14px; color: var(--gold); }

  /* ===== TUTOR: DASHBOARD ===== */
  #screen-tutor { padding: 0; }
  .tutor-header {
    padding: 14px 16px 12px;
    background: linear-gradient(180deg, rgba(123,109,255,0.10) 0%, transparent 100%);
    border-bottom: 1px solid var(--border);
  }
  .tutor-header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 8px;
  }
  .tutor-title {
    font-family: 'Nunito', sans-serif;
    font-size: 22px;
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -0.01em;
    color: #FFFFFF;
  }
  .tutor-sub {
    font-size: 14px;
    color: var(--muted);
    margin-top: 2px;
    line-height: 1.3;
    max-width: 280px;
    font-weight: 700;
  }
  .tutor-top-actions { display: flex; gap: 8px; }
  .tutor-icon-btn {
    width: 44px !important;
    height: 44px;
    border-radius: 14px;
    padding: 0 !important;
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--border);
    color: var(--text) !important;
    transition: all var(--transition);
    overflow: visible;
  }
  .tutor-icon-btn:hover { background: rgba(255,255,255,0.10); border-color: var(--border-strong); }
  .tutor-icon-btn:active { transform: scale(0.97); }
  .tutor-icon-btn:focus-visible { box-shadow: var(--focus-ring); }
  .tutor-logout-btn {
    min-width: 74px;
    height: 44px;
    border-radius: 14px;
    padding: 0 14px !important;
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--border);
    color: var(--text) !important;
    font-weight: 900;
    transition: all var(--transition);
  }
  .tutor-logout-btn:hover { background: rgba(255,255,255,0.10); border-color: var(--border-strong); }
  .tutor-logout-btn:active { transform: scale(0.97); }
  .tutor-logout-btn:focus-visible { box-shadow: var(--focus-ring); }
  .tutor-stats-inline {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0;
    margin-top: 2px;
    color: rgba(214, 221, 249, 0.82);
  }
  .tutor-stats-inline .stat-item {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 14px;
    font-weight: 700;
    color: rgba(214, 221, 249, 0.82);
    line-height: 1.35;
  }
  .tutor-stats-inline .stat-item + .stat-item::before {
    content: '·';
    margin: 0 8px;
    color: rgba(176, 186, 228, 0.62);
  }
  .tutor-stats-inline .stat-value {
    font-family: 'Nunito', sans-serif;
    font-size: 14px;
    line-height: 1.35;
    font-weight: 900;
    color: var(--text);
  }
  .student-list { padding: 12px 16px 16px; flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 12px; }
  .student-card {
    background: var(--card-gradient);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 16px;
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: var(--shadow-card);
  }
  .student-card:hover { background: var(--card-gradient-hover); }
  .student-card:active { transform: scale(0.98); }
  .student-card-top { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
  .student-avatar {
    width: 48px; height: 48px; border-radius: 50%;
    background: linear-gradient(135deg, var(--purple), var(--blue));
    display: flex; align-items: center; justify-content: center;
    font-family: 'Fredoka One', cursive; font-size: 20px; color: #fff; flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(123,109,255,0.20);
  }
  .student-name { font-size: 17px; font-weight: 800; color: var(--text); }
  .student-info { font-size: 13px; color: var(--muted); margin-top: 2px; }
  .student-stats { display: flex; gap: 8px; flex-wrap: wrap; }
  .tutor-actions-bar {
    padding: 10px 16px 10px;
    background: transparent;
  }
  .tutor-actions-row {
    display: flex;
    align-items: stretch;
    gap: 10px;
  }
  .tutor-search-wrap {
    flex: 1;
    position: relative;
  }
  .tutor-search-input {
    width: 100%;
    height: 44px;
    background: var(--card2);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 0 14px;
    color: var(--text);
    font-family: 'Nunito', sans-serif;
    font-size: 14px;
    outline: none;
    transition: all var(--transition);
  }
  .tutor-search-input::placeholder { color: var(--muted-subtle); }
  .tutor-search-input:hover { border-color: var(--border-strong); }
  .tutor-search-input:focus { border-color: var(--purple); box-shadow: var(--focus-ring); }
  .tutor-add-student-btn {
    height: 44px;
    padding: 0 18px;
    border-radius: 14px;
    background: var(--card2);
    border: 1px solid var(--border);
    color: var(--text);
    font-family: 'Nunito', sans-serif;
    font-weight: 900;
    font-size: 15px;
    line-height: 1;
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--transition);
  }
  .tutor-add-student-btn:hover { background: var(--card-hover); border-color: var(--border-strong); }
  .tutor-add-student-btn:active { transform: scale(0.97); }
  .tutor-add-student-btn:focus-visible { box-shadow: var(--focus-ring); }
  .tutor-handoff-bar {
    padding: 0 16px 6px;
    background: transparent;
  }
  .tutor-handoff-btn {
    width: 100%;
    height: 40px;
    border-radius: 12px;
    background: rgba(123,109,255,0.10);
    border: 1px solid rgba(123,109,255,0.20);
    color: var(--purple2);
    font-family: 'Nunito', sans-serif;
    font-weight: 800;
    font-size: 13px;
    cursor: pointer;
    transition: all var(--transition);
  }
  .tutor-handoff-btn:hover {
    background: rgba(123,109,255,0.15);
    border-color: rgba(123,109,255,0.30);
  }
  .tutor-handoff-btn:active {
    transform: scale(0.97);
  }
  .tutor-handoff-btn:focus-visible {
    box-shadow: var(--focus-ring);
  }
  #screen-tutor-dashboard {
    background: var(--bg-gradient) !important;
    color: var(--text);
  }
  #screen-tutor-dashboard .tutor-header {
    background: linear-gradient(180deg, rgba(123,109,255,0.08) 0%, transparent 100%);
    border-bottom: 1px solid var(--border);
  }
  #screen-tutor-dashboard .student-list {
    background: transparent;
    gap: 12px;
  }
  #screen-tutor-dashboard .fab {
    display: none !important;
  }
  #screen-tutor-dashboard .student-card {
    background: var(--card-gradient);
    border-color: var(--border);
    box-shadow: var(--shadow-card);
    padding: 16px 14px;
    border-radius: var(--radius-lg);
  }
  #screen-tutor-dashboard .student-card:hover {
    background: var(--card-gradient-hover);
  }
  #screen-tutor-dashboard .student-avatar {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--purple), var(--blue));
    font-size: 20px;
  }
  #screen-tutor-dashboard .student-name {
    font-size: 17px;
    color: var(--text);
  }
  #screen-tutor-dashboard .student-info {
    color: var(--muted);
  }
  #screen-tutor-dashboard .level-badge {
    background: rgba(242,214,75,0.18);
    color: var(--gold);
    border: 1px solid rgba(242,214,75,0.25);
    font-size: 12px;
    padding: 4px 11px;
    border-radius: 999px;
    font-weight: 900;
    line-height: 1.2;
  }
  #screen-tutor-dashboard .badge {
    border: 1px solid rgba(255,255,255,0.08);
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 999px;
    background: rgba(255,255,255,0.06);
    color: var(--muted);
    font-weight: 800;
  }
  #screen-tutor-dashboard .badge-purple {
    background: rgba(123,109,255,0.15);
    color: var(--purple2);
    border-color: rgba(123,109,255,0.25);
  }
  #screen-tutor-dashboard .badge-green {
    background: rgba(56,210,122,0.15);
    color: var(--green);
    border-color: rgba(56,210,122,0.25);
  }
  #screen-tutor-dashboard .badge-gold {
    background: rgba(242,214,75,0.15);
    color: var(--gold);
    border-color: rgba(242,214,75,0.25);
  }
  .pending-badge-strip {
    margin-top: 8px;
    padding: 8px 10px;
    border-radius: 14px;
    border: 1px solid rgba(242,214,75,0.22);
    background: rgba(34,55,106,0.60);
    cursor: pointer;
    transition: all var(--transition);
  }
  .pending-badge-strip:hover { background: rgba(34,55,106,0.75); border-color: rgba(242,214,75,0.30); }
  .pending-badge-strip:active { transform: scale(0.98); }
  .pending-badge-row { display:flex; align-items:center; gap:8px; }
  .pending-badge-icon { font-size: 18px; line-height: 1; opacity: 0.9; }
  .pending-badge-copy { flex:1; min-width:0; }
  .pending-badge-title {
    font-size: 14px;
    font-weight: 800;
    color: var(--gold);
    line-height: 1.2;
  }
  .pending-badge-sub {
    font-size: 11px;
    color: var(--muted);
    margin-top: 1px;
  }
  .pending-badge-count {
    min-width: 32px;
    height: 32px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 9px;
    font-size: 18px;
    font-weight: 900;
    color: #14254B;
    background: linear-gradient(135deg, var(--gold), #e0c53a);
  }
  #screen-tutor-dashboard .student-card-header {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 10px;
  }
  #screen-tutor-dashboard .student-card-body {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 7px;
  }
  #screen-tutor-dashboard .student-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    min-width: 0;
  }
  #screen-tutor-dashboard .student-row-top {
    align-items: flex-start;
  }
  #screen-tutor-dashboard .student-name {
    font-size: 18px;
    font-weight: 900;
    line-height: 1.2;
    color: var(--text);
    min-width: 0;
  }
  #screen-tutor-dashboard .student-row-sub .student-info {
    margin-top: 0;
    line-height: 1.35;
    min-width: 0;
  }
  #screen-tutor-dashboard .student-last-seen {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--muted);
    white-space: nowrap;
    flex-shrink: 0;
  }
  #screen-tutor-dashboard .student-activity-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    display: inline-block;
  }
  #screen-tutor-dashboard .student-activity-dot.is-online { background: var(--green); }
  #screen-tutor-dashboard .student-activity-dot.is-recent { background: var(--gold); }
  #screen-tutor-dashboard .student-activity-dot.is-idle { background: var(--coral); }
  #screen-tutor-dashboard .student-activity-dot.is-unknown { background: var(--muted-subtle); }
  #screen-tutor-dashboard .student-row-topic {
    align-items: flex-start;
    flex-wrap: wrap;
    row-gap: 7px;
    margin-top: 1px;
  }
  #screen-tutor-dashboard .student-topic {
    min-width: 0;
    flex: 1;
    font-size: 13px;
    color: var(--muted);
    line-height: 1.35;
    word-break: break-word;
  }
  #screen-tutor-dashboard .student-topic.is-empty {
    color: var(--muted-subtle);
  }
  #screen-tutor-dashboard .queue-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 3px 9px;
    border-radius: 999px;
    border: 1px solid rgba(56,210,122,0.26);
    background: rgba(56,210,122,0.15);
    color: var(--green);
    font-size: 11px;
    font-weight: 800;
    line-height: 1.2;
    flex-shrink: 0;
    white-space: nowrap;
  }
  #screen-tutor-dashboard .student-stats {
    margin-top: 10px;
    gap: 8px;
  }
  .empty-state { text-align: center; padding: 60px 20px; color: var(--muted); }
  .empty-icon { font-size: 56px; margin-bottom: 16px; display: block; }
  .fab {
    position: fixed; bottom: 24px; right: 24px;
    width: 56px; height: 56px; border-radius: 50%;
    background: linear-gradient(135deg, var(--purple), #5F7BFF);
    border: none; color: #fff; font-size: 28px; cursor: pointer;
    box-shadow: 0 4px 20px rgba(123,109,255,0.40);
    display: flex; align-items: center; justify-content: center;
    transition: all var(--transition);
    z-index: 10;
  }
  .fab:hover { box-shadow: 0 6px 24px rgba(123,109,255,0.50); }
  .fab:active { transform: scale(0.9); }
  .fab:focus-visible { box-shadow: var(--focus-ring); }

  /* ===== ADD STUDENT ===== */
  #screen-add-student { padding: 20px; gap: 16px; }
  .form-group { display: flex; flex-direction: column; gap: 12px; }
  
  /* Гарантированно скрываем модальное окно при загрузке */
  #modal-assign-student { display: none !important; }

  /* ===== STUDENT DETAIL (tutor) ===== */
  #screen-student-detail {
    padding: 20px;
    gap: 16px;
    background: var(--bg-gradient);
    color: var(--text);
  }
  #screen-student-detail .header {
    background: linear-gradient(180deg, rgba(123,109,255,0.08) 0%, transparent 100%);
    border-bottom: 1px solid var(--border);
  }
  #screen-student-detail .header-title {
    font-family: 'Nunito', sans-serif;
    font-size: 22px;
    color: var(--text);
    font-weight: 900;
    line-height: 1.15;
  }
  #screen-student-detail .header .btn.btn-sm {
    height: 32px;
    min-width: 36px;
    border-radius: 10px;
    padding: 0 10px !important;
    font-size: 12px !important;
  }
  #screen-student-detail .header .btn.btn-coral {
    background: rgba(255,107,107,0.15);
    border: 1px solid rgba(255,107,107,0.30);
    color: var(--coral);
  }
  #screen-student-detail .header .btn.btn-red {
    background: rgba(220,53,69,0.86);
    border: 1px solid rgba(220,53,69,0.92);
    color: #fff;
  }
  .student-detail-actions {
    padding: 16px 20px 8px;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }
  .student-detail-action-btn {
    width: 100%;
    min-height: 52px;
  }
  .student-detail-content {
    padding: 0 20px;
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
  }
  .student-detail-intro {
    padding: 0;
    margin-bottom: 2px;
  }
  .student-detail-learning-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
  }
  .student-detail-subject-count {
    font-size: 13px;
    color: rgba(184,198,227,0.65);
    font-weight: 700;
    white-space: nowrap;
  }
  .student-detail-primary-action {
    padding: 0 0 6px;
  }
  .student-detail-primary-action .student-detail-assign-tutor-btn {
    min-height: 46px;
    border-radius: 16px;
    background: var(--card2);
    border: 1px dashed rgba(109,183,255,0.2);
    color: var(--muted);
    font-size: 14px;
    font-weight: 800;
    transition: all var(--transition);
  }
  .student-detail-primary-action .student-detail-assign-tutor-btn:active {
    background: var(--card-hover);
    border-color: rgba(109,183,255,0.35);
    color: var(--text);
  }
  .student-detail-primary-action .btn {
    min-height: 40px;
    border-radius: 12px;
    background: transparent;
    border: 1px dashed var(--border);
    color: var(--muted);
    font-size: 13px;
    font-weight: 600;
    transition: all var(--transition);
  }
  .student-detail-primary-action .btn:active {
    background: rgba(123,109,255,0.08);
    border-color: rgba(123,109,255,0.35);
    color: var(--text);
  }
  /* Quiet gap between add button and subject list */
  #screen-student-detail .student-detail-subjects {
    margin-top: 16px;
  }
  #screen-student-detail .section-title {
    font-family: 'Nunito', sans-serif;
    font-size: 22px;
    color: var(--purple2);
    line-height: 1.1;
    margin-bottom: 2px;
  }
  #screen-student-detail .section-sub {
    margin-bottom: 0;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.35;
  }
  .student-detail-subjects {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }
  .student-subject-empty {
    font-size: 13px;
    color: rgba(191,198,236,0.6);
    padding: 8px 0;
    line-height: 1.4;
  }
  .student-subject-item {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 14px 16px;
    border-radius: var(--radius);
    background: var(--card2);
    border: 1px solid var(--border);
    transition: all var(--transition);
  }
  .student-subject-item:hover {
    background: var(--card-hover);
    border-color: var(--border-strong);
  }
  .student-subject-item:active {
    transform: scale(0.98);
  }
  .student-subject-main {
    flex: 1;
    min-width: 0;
    cursor: pointer;
  }
  .student-subject-name {
    font-weight: 700;
    font-size: 15px;
    color: var(--text);
    line-height: 1.3;
  }
  .student-subject-topic {
    font-size: 13px;
    color: var(--muted);
    margin-top: 3px;
    line-height: 1.35;
  }
  .student-subject-actions {
    display: flex;
    gap: 8px;
    flex-shrink: 0;
    align-self: flex-end;
  }
  .student-subject-action {
    border: 1px solid var(--border);
    background: transparent;
    color: var(--muted);
    border-radius: 10px;
    padding: 7px 14px;
    font-size: 12px;
    font-weight: 600;
    line-height: 1;
    cursor: pointer;
    transition: all var(--transition);
  }
  .student-subject-action:hover {
    background: rgba(123,109,255,0.08);
    color: var(--text);
    border-color: rgba(123,109,255,0.25);
  }
  .student-subject-action:active {
    transform: scale(0.97);
  }
  .student-subject-action:focus-visible {
    box-shadow: var(--focus-ring);
  }

  /* ==========================================================================
     SUBJECT CARD COMPONENT (dark gamified mobile UI)
     ========================================================================== */
  .subject-card-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 8px;
  }

  .subject-card {
    position: relative;
    background: #22376A;
    border-radius: 22px;
    overflow: hidden;
    border: 1px solid rgba(109,183,255,0.08);
    box-shadow: 0 6px 20px rgba(5, 10, 30, 0.35), 0 1px 3px rgba(0,0,0,0.2);
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.15s ease;
  }
  .subject-card:active {
    transform: scale(0.98);
    box-shadow: 0 4px 14px rgba(5, 10, 30, 0.3);
  }
  .subject-card.empty {
    background: rgba(34, 55, 106, 0.5);
    border-style: dashed;
    border-color: rgba(109,183,255,0.12);
    cursor: default;
    transform: none;
  }

  .subject-card-accent {
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 100%;
    border-radius: 0 4px 4px 0;
    opacity: 0.9;
  }

  .subject-card-body {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px 20px 18px 24px;
  }

  .subject-card-icon {
    width: 48px;
    height: 48px;
    border-radius: 16px;
    background: #1B2F5C;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
    box-shadow: inset 0 2px 6px rgba(0,0,0,0.25);
  }

  .subject-card-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 3px;
  }

  .subject-card-name {
    font-size: 16px;
    font-weight: 900;
    color: #FFFFFF;
    line-height: 1.2;
    letter-spacing: -0.01em;
  }

  .subject-card-secondary {
    font-size: 13px;
    color: #B8C6E3;
    line-height: 1.3;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .subject-card-tertiary {
    font-size: 11px;
    color: rgba(184,198,227,0.55);
    line-height: 1.3;
  }

  .subject-card-actions {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 8px;
    flex-shrink: 0;
  }

  .subject-card-status {
    font-size: 10px;
    font-weight: 800;
    padding: 4px 9px;
    border-radius: 999px;
    line-height: 1.2;
    white-space: nowrap;
  }

  .subject-card-btn {
    border: none;
    border-radius: 12px;
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 800;
    cursor: pointer;
    transition: background 0.15s, color 0.15s, transform 0.1s, box-shadow 0.15s;
    font-family: 'Nunito', sans-serif;
    line-height: 1.1;
    min-width: 80px;
    text-align: center;
  }
  .subject-card-btn:active {
    transform: scale(0.96);
  }
  .subject-card-btn-primary {
    background: linear-gradient(135deg, #F2D64B, #e0c53a);
    color: #14254B;
    box-shadow: 0 2px 8px rgba(242,214,75,0.25);
  }
  .subject-card-btn-primary:hover {
    box-shadow: 0 4px 14px rgba(242,214,75,0.35);
  }
  .subject-card-btn-secondary {
    background: rgba(27,47,92,0.8);
    color: #B8C6E3;
    border: 1px solid rgba(109,183,255,0.12);
    min-width: 38px;
    padding: 8px 10px;
    font-size: 15px;
  }
  .subject-card-btn-secondary:hover {
    background: rgba(34,55,106,0.9);
    border-color: rgba(109,183,255,0.22);
  }

  /* ==========================================================================
     STUDENT DETAIL CTA & INFO
     ========================================================================== */
  .student-detail-cta {
    padding: 0;
  }
  .student-detail-cta .btn {
    min-height: 46px;
    border-radius: 12px;
    background: rgba(39, 47, 92, 0.66);
    border: 1px solid rgba(124,110,247,0.2);
    color: #eef1ff;
  }
  .detail-info-panel {
    margin-top: 8px;
    background: var(--card2);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 14px 16px;
  }
  .detail-section-title {
    font-size: 13px;
    font-weight: 800;
    color: var(--muted);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
  }
  #screen-student-detail .subject-track-card {
    margin: 0;
    background: var(--card2);
    border-color: var(--border);
    border-radius: var(--radius);
    box-shadow: 0 6px 16px rgba(7, 10, 28, 0.16);
  }
  #screen-student-detail .detail-info-key {
    color: var(--muted);
  }
  #screen-student-detail .detail-info-value {
    color: var(--text);
  }
  .detail-info-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 14px;
  }
  .detail-info-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 12px;
  }
  .detail-info-key { color: var(--muted); }
  .detail-info-value {
    font-weight: 700;
    text-align: right;
    word-break: break-word;
  }
  .detail-info-value-mono { font-family: monospace; }
  .detail-info-value-streak { color: var(--coral); }
  .stat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
  /* Uses shared .stat-box/.stat-label from STUDENT/ADMIN STATS section */
  .stat-num { font-family: 'Fredoka One', cursive; font-size: 28px; }
  .weak-area {
    display: flex; align-items: center; justify-content: space-between;
    padding: 12px 14px; background: var(--card2); border-radius: var(--radius-sm);
    border: 1px solid var(--border); margin-bottom: 8px;
    transition: all var(--transition);
  }
  .weak-area:hover { background: var(--card-hover); border-color: var(--border-strong); }
  .weak-label { font-size: 14px; font-weight: 700; color: var(--text); }
  .weak-bar { flex: 1; margin: 0 12px; height: 8px; background: var(--bg2); border-radius: 99px; overflow: hidden; }

  /* ==========================================================================
     STUDENT AREA
     ========================================================================== */
  /* ===== STUDENT HOME ===== */
  #screen-student { padding: 0; }
  .student-home-header {
    padding: 20px;
    background: linear-gradient(180deg, rgba(124,110,247,0.2) 0%, transparent 100%);
  }
  .student-greeting { font-size: 14px; color: var(--muted); margin-bottom: 4px; }
  .student-name-big { font-family: 'Fredoka One', cursive; font-size: 26px; color: var(--purple2); }
  .xp-section { margin-top: 16px; background: var(--card); border-radius: var(--radius); padding: 16px; border: 1px solid var(--border); }
  .topic-stage-card {
    margin-top: 12px;
    padding: 12px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(124,110,247,0.12), rgba(79,195,247,0.10));
    border: 1px solid rgba(124,110,247,0.28);
  }
  .topic-stage-top { display:flex; align-items:flex-start; justify-content:space-between; gap:8px; }
  .topic-stage-title { font-size: 14px; font-weight: 900; color: var(--text); }
  .topic-stage-sub { font-size: 12px; color: var(--muted); margin-top: 4px; }
  .topic-stage-progress { height: 8px; border-radius: 999px; overflow: hidden; background: rgba(255,255,255,0.08); margin-top: 10px; }
  .topic-stage-progress-fill { height: 100%; border-radius: inherit; background: var(--coral); transition: width 0.35s ease, background-color 0.2s ease; }
  .topic-stage-progress-fill.level-red { background: var(--coral); }
  .topic-stage-progress-fill.level-yellow { background: var(--gold); }
  .topic-stage-progress-fill.level-green { background: var(--green); }
  .topic-stage-percent { margin-top: 8px; font-size: 12px; font-weight: 800; color: var(--muted); text-align: right; }
  .xp-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
  .level-badge {
    background: linear-gradient(135deg, var(--gold), #e0c53a);
    color: #1a1000; padding: 4px 12px; border-radius: 20px; font-weight: 900; font-size: 14px;
  }
  .xp-text { font-size: 13px; color: var(--muted); }
  .streak-row { display: flex; align-items: center; justify-content: center; gap: 8px; margin-top: 16px; }
  .streak-num { font-family: 'Fredoka One', cursive; font-size: 32px; color: var(--coral); }
  .streak-label { font-size: 14px; color: var(--muted); font-weight: 700; }
  .home-actions { padding: 0 20px; display: flex; flex-direction: column; gap: 12px; margin-top: 16px; }
  .daily-task-btn {
    background: linear-gradient(135deg, var(--purple) 0%, #5F7BFF 50%, #5A6BEE 100%);
    border-radius: var(--radius); padding: 20px; text-align: center;
    cursor: pointer; border: none; color: #fff; transition: transform 0.2s;
    box-shadow: 0 8px 24px rgba(124,110,247,0.4);
  }
  .daily-task-btn:active { transform: scale(0.97); }
  .daily-task-emoji { font-size: 40px; display: block; margin-bottom: 8px; }
  .daily-task-title { font-family: 'Fredoka One', cursive; font-size: 22px; }
  .daily-task-sub { font-size: 14px; opacity: 0.8; margin-top: 4px; }
  .achievements-row { display: flex; gap: 8px; overflow-x: auto; padding: 0 20px; padding-bottom: 4px; margin-top: 4px; }
  .current-task-card {
    margin: 14px 20px 0;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  .current-task-title { font-size: 15px; font-weight: 900; color: var(--text); }
  .current-task-desc { margin-top: 4px; font-size: 13px; color: var(--muted); line-height: 1.45; }
  .current-task-meta { font-size: 12px; color: var(--muted); }
  .current-task-actions { display:flex; gap:8px; flex-wrap:wrap; }
  .task-state-chip {
    display:inline-flex;
    align-items:center;
    justify-content:center;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 900;
    line-height: 1;
    border: 1px solid transparent;
    white-space: nowrap;
  }
  .task-state-loading { background: rgba(79,195,247,0.16); color: var(--blue); border-color: rgba(79,195,247,0.35); }
  .task-state-empty { background: rgba(255,255,255,0.08); color: var(--muted); border-color: rgba(255,255,255,0.16); }
  .task-state-new { background: rgba(124,110,247,0.18); color: var(--purple2); border-color: rgba(124,110,247,0.35); }
  .task-state-progress { background: rgba(245,197,66,0.18); color: var(--gold); border-color: rgba(245,197,66,0.35); }
  .task-state-checking { background: rgba(79,195,247,0.16); color: var(--blue); border-color: rgba(79,195,247,0.35); }
  .task-state-completed { background: rgba(78,203,113,0.18); color: var(--green); border-color: rgba(78,203,113,0.35); }
  .task-state-overdue { background: rgba(255,107,107,0.18); color: var(--coral); border-color: rgba(255,107,107,0.35); }
  .task-state-scheduled { background: rgba(124,110,247,0.18); color: var(--purple2); border-color: rgba(124,110,247,0.35); }
  .achievement {
    flex-shrink: 0; background: var(--card); border: 1px solid var(--border);
    border-radius: 12px; padding: 10px 14px; text-align: center; min-width: 80px;
  }
  .achievement.locked { opacity: 0.4; filter: grayscale(1); }
  .achievement-name { font-size: 11px; color: var(--muted); margin-top: 4px; }
  .achievements-title { font-size: 14px; font-weight: 800; color: var(--muted); padding: 0 20px; margin-top: 16px; text-transform: uppercase; letter-spacing: 0.5px; }

  /* ===== LEARNING SECTION (Student Home) ===== */
  .learning-section {
    padding: 0 20px;
    margin-top: 16px;
  }
  .learning-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
  }
  .learning-section-title {
    font-size: 14px;
    font-weight: 800;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
  }
  .learning-add-btn {
    width: 100%;
    padding: 12px 16px;
    border-radius: 12px;
    border: 1px dashed var(--border);
    background: rgba(124, 110, 247, 0.08);
    color: var(--purple2);
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    text-align: center;
    margin-bottom: 10px;
    transition: background 0.2s ease, border-color 0.2s ease;
  }
  .learning-add-btn:active {
    background: rgba(124, 110, 247, 0.18);
    border-color: var(--purple);
  }
  .learning-subjects-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }
  .learning-subject-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px;
    border-radius: 12px;
    background: var(--card);
    border: 1px solid var(--border);
    transition: background 0.15s ease;
  }
  .learning-subject-item:active {
    background: var(--card2);
  }
  .learning-subject-main {
    flex: 1;
    min-width: 0;
  }
  .learning-subject-name {
    font-size: 14px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .learning-subject-topic {
    font-size: 12px;
    color: var(--muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .learning-subject-empty {
    font-size: 13px;
    color: var(--muted);
    text-align: center;
    padding: 8px 0;
  }
  .history-section { padding: 0 20px; margin-top: 16px; padding-bottom: 24px; }
  .history-item {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 0; border-bottom: 1px solid var(--border);
  }
  .history-icon { font-size: 22px; }
  .history-text { flex: 1; font-size: 14px; }
  .history-result { font-size: 13px; font-weight: 700; }

  /* ===== TASK SCREEN ===== */
  #screen-task { padding: 0; }
  .task-header {
    padding: 16px 20px;
    background: linear-gradient(180deg, rgba(124,110,247,0.15) 0%, transparent 100%);
    border-bottom: 1px solid var(--border);
  }
  .task-subject { font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; }
  .task-topic { font-family: 'Fredoka One', cursive; font-size: 20px; color: var(--purple2); margin-top: 4px; }
  .task-body { padding: 20px; flex: 1; overflow-y: auto; }
  .task-meta-panel {
    background: linear-gradient(135deg, rgba(124,110,247,0.14), rgba(79,195,247,0.12));
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 12px;
    margin-bottom: 14px;
  }
  .task-chips-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 10px;
  }
  .task-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 800;
    line-height: 1;
  }
  .task-chip-type {
    background: rgba(124,110,247,0.22);
    color: var(--purple2);
  }
  .task-chip-difficulty {
    background: rgba(79,195,247,0.2);
    color: var(--blue);
  }
  .task-chip-goal {
    background: rgba(245,197,66,0.2);
    color: var(--gold);
  }
  .task-progress-track {
    height: 7px;
    border-radius: 999px;
    overflow: hidden;
    background: rgba(255,255,255,0.08);
  }
  .task-progress-fill {
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--purple), var(--blue));
    transition: width 0.35s ease;
  }
  .task-question {
    font-size: 20px; font-weight: 700; line-height: 1.5;
    background: linear-gradient(145deg, rgba(255,255,255,0.02), rgba(124,110,247,0.05));
    border-radius: var(--radius); padding: 22px 20px;
    border: 1px solid var(--border); margin-bottom: 20px;
    box-shadow: 0 8px 18px rgba(0,0,0,0.24);
  }
  .options-grid { display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px; }
  .option-btn {
    width: 100%;
    background: linear-gradient(145deg, rgba(255,255,255,0.02), rgba(124,110,247,0.04));
    border: 2px solid var(--border); border-radius: 14px;
    padding: 14px 16px; text-align: left; cursor: pointer;
    font-family: 'Nunito', sans-serif; font-size: 17px; font-weight: 700; color: var(--text);
    transition: all 0.18s ease;
    display: flex; align-items: center; gap: 12px;
  }
  .option-btn:active {
    border-color: var(--purple);
    background: rgba(124,110,247,0.2);
    transform: scale(0.99);
  }
  .option-btn.selected {
    border-color: var(--purple);
    background: rgba(124,110,247,0.2);
    box-shadow: 0 6px 16px rgba(124,110,247,0.2);
    transform: translateY(-1px);
  }
  .option-btn.correct {
    border-color: var(--green);
    background: rgba(78,203,113,0.15);
    box-shadow: 0 6px 16px rgba(78,203,113,0.15);
  }
  .option-btn.wrong {
    border-color: var(--coral);
    background: rgba(255,107,107,0.15);
    box-shadow: 0 6px 16px rgba(255,107,107,0.15);
  }
  @media (hover: hover) and (pointer: fine) {
    .option-btn:hover {
      border-color: rgba(124,110,247,0.45);
      transform: translateY(-1px);
      box-shadow: 0 8px 18px rgba(0,0,0,0.2);
    }
  }
  .option-letter {
    width: 32px; height: 32px; border-radius: 50%; background: rgba(255,255,255,0.06);
    display: flex; align-items: center; justify-content: center;
    font-size: 14px; font-weight: 900; flex-shrink: 0;
    border: 1px solid rgba(255,255,255,0.1);
  }
  .option-text { line-height: 1.4; }
  .dnd-question {
    font-size: 17px;
    line-height: 1.6;
    margin-bottom: 12px;
    color: var(--text);
  }
  .dnd-slot {
    display: inline-flex;
    min-width: 150px;
    padding: 6px 10px;
    border: 2px dashed rgba(124,110,247,0.45);
    border-radius: 10px;
    background: rgba(124,110,247,0.12);
    color: var(--purple2);
    font-weight: 800;
    cursor: pointer;
    user-select: none;
    transition: all 0.2s ease;
  }
  .dnd-slot.filled {
    border-style: solid;
    background: rgba(78,203,113,0.12);
    border-color: rgba(78,203,113,0.5);
    color: var(--green);
  }
  .dnd-slot.drag-over {
    transform: scale(1.03);
    box-shadow: 0 0 0 3px rgba(124,110,247,0.2);
  }
  .dnd-bank {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 14px;
  }
  .dnd-word {
    border: 1px solid var(--border);
    background: var(--card2);
    color: var(--text);
    border-radius: 999px;
    padding: 8px 12px;
    font-size: 14px;
    font-weight: 700;
    cursor: grab;
  }
  .dnd-word:active { cursor: grabbing; }
  .group-sort-wrap {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 14px;
  }
  .group-pool {
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 10px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    min-height: 52px;
    background: rgba(255,255,255,0.03);
  }
  .group-cols {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }
  .group-col {
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 10px;
    background: rgba(124,110,247,0.06);
  }
  .group-col-title {
    font-size: 13px;
    font-weight: 900;
    color: var(--purple2);
    margin-bottom: 8px;
    text-transform: uppercase;
  }
  .group-col-drop {
    min-height: 56px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }
  .group-col-empty {
    font-size: 12px;
    color: var(--muted);
    align-self: center;
  }
  .group-word {
    border: 1px solid var(--border);
    background: var(--card2);
    color: var(--text);
    border-radius: 10px;
    padding: 6px 10px;
    font-size: 13px;
    font-weight: 800;
    cursor: grab;
  }
  .group-word.in-group {
    background: rgba(78,203,113,0.14);
    border-color: rgba(78,203,113,0.4);
  }
  .word-bank-wrap {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 14px;
  }
  .word-bank-answer {
    border: 2px dashed rgba(124,110,247,0.4);
    border-radius: 12px;
    padding: 12px;
    min-height: 72px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    background: rgba(124,110,247,0.08);
    align-items: center;
  }
  .word-bank-pool {
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 12px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    min-height: 80px;
    background: rgba(255,255,255,0.03);
    align-items: flex-start;
    align-content: flex-start;
  }
  .word-bank-chip {
    border: 1px solid var(--border);
    background: var(--card2);
    color: var(--text);
    border-radius: 999px;
    padding: 8px 14px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.15s ease;
    user-select: none;
  }
  .word-bank-chip:hover {
    background: var(--card-hover);
    transform: translateY(-1px);
  }
  .word-bank-chip:active {
    transform: scale(0.96);
  }
  .word-bank-chip.in-answer {
    background: rgba(78,203,113,0.14);
    border-color: rgba(78,203,113,0.4);
    color: var(--green);
  }
  .word-bank-empty {
    font-size: 13px;
    color: var(--muted);
    font-style: italic;
  }
  .hint-btn {
    background: rgba(245,197,66,0.1); border: 1px solid rgba(245,197,66,0.3);
    border-radius: 10px; padding: 10px 16px; color: var(--gold);
    font-family: 'Nunito', sans-serif; font-weight: 700; font-size: 14px; cursor: pointer;
    display: flex; align-items: center; gap: 8px; margin-bottom: 16px;
  }
  .hint-text { background: rgba(245,197,66,0.08); border: 1px solid rgba(245,197,66,0.2); border-radius: 10px; padding: 12px; font-size: 14px; margin-bottom: 16px; display: none; }
  .task-footer { padding: 16px 20px; padding-bottom: max(16px, env(safe-area-inset-bottom)); border-top: 1px solid var(--border); }

  /* ===== RESULT SCREEN ===== */
  #screen-result { padding: 24px; align-items: center; justify-content: center; gap: 20px; text-align: center; }
  .result-emoji { font-size: 80px; animation: bounce 0.5s ease; }
  @keyframes bounce { 0% { transform: scale(0); } 70% { transform: scale(1.2); } 100% { transform: scale(1); } }
  .result-title { font-family: 'Fredoka One', cursive; font-size: 32px; }
  .result-subtitle { color: var(--muted); font-size: 16px; }
  .xp-gained { background: rgba(245,197,66,0.1); border: 1px solid rgba(245,197,66,0.3); border-radius: 14px; padding: 14px 24px; }
  .xp-amount { font-family: 'Fredoka One', cursive; font-size: 36px; color: var(--gold); }
  .xp-label { font-size: 14px; color: var(--muted); }
  .explanation-box { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; text-align: left; width: 100%; }
  .explanation-title { font-size: 13px; font-weight: 800; color: var(--muted); text-transform: uppercase; margin-bottom: 8px; }
  .explanation-text { font-size: 15px; line-height: 1.6; }
  #result-explanation-short { margin-bottom: 0; }
  #result-explanation-full { color: var(--muted); }
  .result-actions { display: flex; flex-direction: column; gap: 10px; width: 100%; }

  /* ===== TUTOR: TASK QUEUE EDITOR ===== */
  #screen-task-queue-editor {
    padding: 0;
  }
  .task-queue-item {
    background: var(--card-gradient);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px;
    box-shadow: var(--shadow-card);
    transition: all var(--transition);
  }
  .task-queue-item:hover { background: var(--card-gradient-hover); }
  .task-queue-item + .task-queue-item {
    margin-top: 10px;
  }
  .task-queue-item .btn.btn-sm {
    min-width: 34px;
    justify-content: center;
  }
  .task-queue-item-modern {
    padding: 14px;
    border-radius: 16px;
    background: var(--card-gradient);
    border: 1px solid rgba(123,109,255,0.20);
    box-shadow: var(--shadow-card);
  }
  .task-queue-item-modern:hover { background: var(--card-gradient-hover); }
  .task-queue-top {
    display: flex;
    align-items: flex-start;
    gap: 10px;
  }
  .task-queue-index {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--purple), var(--blue));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 900;
    box-shadow: 0 6px 14px rgba(123,109,255,0.30);
    flex-shrink: 0;
    margin-top: 1px;
  }
  .task-queue-type {
    font-size: 12px;
    color: var(--muted);
    white-space: nowrap;
  }
  .task-queue-question {
    font-size: 14px;
    font-weight: 800;
    line-height: 1.35;
    color: var(--text);
  }
  .task-queue-meta {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
  }
  .task-queue-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    margin-top: 12px;
  }
  .queue-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 12px;
    padding: 10px 12px;
    border-radius: 14px;
    background: rgba(123,109,255,0.10);
    border: 1px solid var(--border);
    transition: all var(--transition);
  }
  .queue-toolbar:hover { background: rgba(123,109,255,0.14); border-color: var(--border-strong); }
  .queue-toolbar-title {
    font-size: 13px;
    color: var(--muted);
  }
  .queue-toolbar-title strong {
    color: var(--text);
  }
  .queue-toolbar-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: flex-end;
  }
  .queue-checkbox-wrap {
    margin-top: 4px;
    flex-shrink: 0;
  }
  .queue-checkbox {
    width: 18px;
    height: 18px;
    accent-color: var(--purple);
    cursor: pointer;
  }
  @media (max-width: 520px) {
    .queue-toolbar {
      flex-direction: column;
      align-items: flex-start;
    }
    .queue-toolbar-actions {
      width: 100%;
      justify-content: stretch;
    }
    .queue-toolbar-actions .btn {
      flex: 1;
      min-width: 0;
    }
    .task-queue-actions {
      grid-template-columns: 1fr;
    }
  }

  /* ==========================================================================
     PARENT AREA
     ========================================================================== */
  /* ===== PARENT SCREEN ===== */
  #screen-parent { padding: 0; }
  .parent-header {
    padding: 20px;
    background: linear-gradient(180deg, rgba(79,195,247,0.15) 0%, transparent 100%);
    border-bottom: 1px solid rgba(79,195,247,0.2);
  }
  .parent-title { font-family: 'Fredoka One', cursive; font-size: 24px; color: var(--blue); }
  .parent-body { padding: 20px; flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 16px; }
  .progress-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
  .progress-card-title { font-size: 16px; font-weight: 800; margin-bottom: 16px; display: flex; align-items: center; gap: 8px; }
  .weekly-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; }
  .day-cell { aspect-ratio: 1; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 11px; font-weight: 700; }
  .day-cell.done { background: rgba(78,203,113,0.3); color: var(--green); }
  .day-cell.miss { background: var(--bg2); color: var(--muted); }
  .day-cell.today { border: 2px solid var(--purple); }

/* ===== STUDENT: ASSESSMENT OPTIONS ===== */
.assessment-shell {
  padding: 18px 18px 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  flex: 1;
  overflow-y: auto;
  background:
    radial-gradient(120% 80% at 50% 0%, rgba(84, 190, 170, 0.08), transparent 45%),
    radial-gradient(100% 100% at 0% 100%, rgba(124,110,247,0.10), transparent 40%);
}
.assessment-hero {
  background:
    radial-gradient(140% 120% at 100% 0%, rgba(78,203,113,0.12), transparent 45%),
    linear-gradient(135deg, rgba(124,110,247,0.16), rgba(79,195,247,0.08));
  border: 1px solid rgba(124,110,247,0.22);
  padding: 18px;
  box-shadow: 0 14px 30px rgba(0,0,0,0.24);
}
.assessment-hero-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}
.assessment-eyebrow {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.62);
  margin-bottom: 8px;
}
.assessment-subject {
  font-size: 18px;
  font-weight: 900;
  margin-bottom: 4px;
}
.assessment-topic {
  font-size: 24px;
  font-family: 'Fredoka One', cursive;
  color: #9f8dff;
}
.assessment-progress-pill {
  min-width: 84px;
  border-radius: 18px;
  padding: 10px 12px;
  text-align: center;
  background: rgba(8, 11, 28, 0.32);
  border: 1px solid rgba(255,255,255,0.08);
}
.assessment-progress-percent {
  font-size: 20px;
  font-weight: 900;
  color: #7ce5d3;
}
.assessment-progress-caption {
  font-size: 11px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.56);
}
.assessment-progress-track {
  height: 10px;
  margin-top: 14px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(255,255,255,0.08);
}
.assessment-progress-fill {
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--purple), var(--blue), var(--gold));
  transition: width 0.3s ease;
}
.assessment-meta-row {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.assessment-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 11px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.1);
  background: rgba(11, 12, 31, 0.34);
  font-size: 12px;
  font-weight: 800;
}
.assessment-chip-mode { color: #7ce5d3; }
.assessment-chip-skill { color: #a99cff; }
.assessment-chip-difficulty { color: #f2c35a; }
.assessment-stepbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}
.assessment-step-copy {
  font-size: 13px;
  font-weight: 900;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.assessment-step-note {
  max-width: 240px;
  text-align: right;
  font-size: 12px;
  line-height: 1.4;
  color: var(--muted);
}
.assessment-stage {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}
.assessment-question-card {
  position: relative;
  padding: 22px 20px 20px;
  border-radius: 24px;
  background:
    radial-gradient(120% 120% at 0% 0%, rgba(124,110,247,0.10), transparent 45%),
    linear-gradient(180deg, rgba(34,31,65,0.95), rgba(25,23,52,0.95));
  border: 1px solid rgba(124,110,247,0.22);
  box-shadow: 0 18px 36px rgba(0,0,0,0.25);
}
.assessment-question-badge {
  display: inline-flex;
  padding: 7px 10px;
  margin-bottom: 14px;
  border-radius: 999px;
  background: rgba(94, 212, 183, 0.12);
  border: 1px solid rgba(94, 212, 183, 0.24);
  color: #7ce5d3;
  font-size: 12px;
  font-weight: 800;
}
.assessment-question {
  font-size: 24px;
  line-height: 1.45;
  font-weight: 900;
  margin-bottom: 18px;
}
.assessment-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.assessment-option-letter {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  font-size: 15px;
  font-weight: 900;
  flex-shrink: 0;
}
.assessment-submit {
  min-height: 54px;
  font-size: 16px;
  font-weight: 900;
  box-shadow: 0 14px 30px rgba(92, 79, 232, 0.28);
}
.assessment-results {
  display: none;
  flex-direction: column;
  gap: 16px;
}
.assessment-results-card {
  text-align: center;
  padding: 30px 22px;
  background:
    radial-gradient(120% 120% at 50% 0%, rgba(242,195,90,0.14), transparent 38%),
    linear-gradient(180deg, rgba(33,31,64,0.96), rgba(24,22,50,0.96));
}
.assessment-results-emoji {
  font-size: 70px;
  margin-bottom: 10px;
}
.assessment-results-level {
  font-size: 26px;
  font-family: 'Fredoka One', cursive;
  color: #9f8dff;
}
.assessment-results-score {
  font-size: 52px;
  font-weight: 900;
  color: var(--gold);
  margin: 10px 0 14px;
}
.assessment-results-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.assessment-results-stat {
  border-radius: 16px;
  padding: 14px 10px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
}
.assessment-results-stat-value {
  font-size: 24px;
  font-weight: 900;
}
.assessment-results-stat-label {
  margin-top: 4px;
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
}
.assessment-results-footnote {
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
}
#assessment-options .option-btn {
  padding:16px 18px;
  border:1px solid rgba(124,110,247,0.18);
  border-radius:18px;
  background:linear-gradient(180deg, rgba(255,255,255,0.03), rgba(124,110,247,0.04));
  color:var(--text);
  font-family:'Nunito',sans-serif;
  font-size:16px;
  font-weight:800;
  cursor:pointer;
  transition:all 0.2s ease;
  text-align:left;
  display:flex;
  align-items:center;
  gap:14px;
  box-shadow: 0 10px 22px rgba(0,0,0,0.18);
}
#assessment-options .option-btn:hover {
  border-color:rgba(124,110,247,0.52);
  transform:translateY(-1px);
  background:linear-gradient(180deg, rgba(255,255,255,0.04), rgba(124,110,247,0.09));
}
#assessment-options .option-btn.selected {
  border-color:var(--purple);
  background:rgba(124,110,247,0.22);
  box-shadow: 0 14px 30px rgba(124,110,247,0.18);
}
@media (max-width: 640px) {
  .assessment-shell {
    padding: 14px 14px 22px;
  }
  .assessment-hero-top,
  .assessment-stepbar {
    flex-direction: column;
    align-items: flex-start;
  }
  .assessment-progress-pill,
  .assessment-step-note {
    text-align: left;
  }
  .assessment-question {
    font-size: 20px;
  }
}

/* ===== STUDENT: LEARNING PLAN / TOPICS ===== */
#screen-learning-plan[data-plan-mode="student"] {
  background:
    radial-gradient(120% 100% at 0% 0%, rgba(94,212,183,0.08), transparent 42%),
    radial-gradient(140% 100% at 100% 0%, rgba(124,110,247,0.10), transparent 48%),
    linear-gradient(180deg, #090817 0%, #080711 100%);
}
#screen-learning-plan[data-plan-mode="student"] #plan-info {
  background:
    radial-gradient(130% 120% at 100% 0%, rgba(94,212,183,0.16), transparent 42%),
    linear-gradient(135deg, rgba(124,110,247,0.20), rgba(55,201,168,0.10));
  border: 1px solid rgba(124,110,247,0.24);
  box-shadow: 0 16px 34px rgba(0,0,0,0.24);
}
#screen-learning-plan[data-plan-mode="student"] #learning-plan-topics {
  gap: 14px;
}
#screen-learning-plan[data-plan-mode="student"] .topic-card {
  background:
    radial-gradient(120% 120% at 0% 0%, rgba(124,110,247,0.10), transparent 45%),
    linear-gradient(180deg, rgba(34,31,65,0.96), rgba(24,22,50,0.96));
  border: 1px solid rgba(124,110,247,0.24);
  border-radius: 22px;
  padding: 18px;
  box-shadow: 0 14px 28px rgba(0,0,0,0.22);
}
#screen-learning-plan[data-plan-mode="student"] .topic-card.active {
  border-color: rgba(94,212,183,0.48);
  box-shadow: 0 16px 34px rgba(94,212,183,0.10);
}
#screen-learning-plan[data-plan-mode="student"] .topic-icon {
  border-radius: 16px;
  background: linear-gradient(135deg, var(--purple), var(--green));
  box-shadow: 0 10px 20px rgba(124,110,247,0.22);
}
#screen-learning-plan[data-plan-mode="student"] .topic-status.active {
  background: rgba(94,212,183,0.14);
  color: #7ce5d3;
}
#screen-learning-plan[data-plan-mode="student"] .topic-status.completed {
  background: rgba(78,203,113,0.16);
}
#screen-learning-plan[data-plan-mode="student"] .lesson-item {
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(124,110,247,0.05));
  border: 1px solid rgba(124,110,247,0.14);
  border-radius: 14px;
  padding: 12px;
}
#screen-learning-plan[data-plan-mode="student"] .lesson-item:hover {
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(94,212,183,0.08));
  border-color: rgba(94,212,183,0.24);
}
#screen-learning-plan[data-plan-mode="student"] .lesson-checkbox {
  border-radius: 10px;
  border-color: rgba(124,110,247,0.26);
}
#screen-learning-plan[data-plan-mode="student"] .lesson-item.completed .lesson-checkbox {
  background: linear-gradient(135deg, var(--green), #5ed4b7);
  border-color: transparent;
}

#screen-learning-plan[data-plan-mode="tutor"] {
  background:
    linear-gradient(180deg, rgba(84,121,255,0.05) 0%, transparent 18%),
    linear-gradient(180deg, #090817 0%, #070611 100%);
}
#screen-learning-plan[data-plan-mode="tutor"] #plan-info {
  background: linear-gradient(180deg, rgba(24,28,52,0.94), rgba(20,23,45,0.94));
  border: 1px solid rgba(112,136,214,0.18);
  box-shadow: none;
}
#screen-learning-plan[data-plan-mode="tutor"] #plan-subject {
  font-size: 14px !important;
  font-weight: 800 !important;
  margin-bottom: 2px !important;
  color: #f0efff;
}
#screen-learning-plan[data-plan-mode="tutor"] #plan-topic {
  font-size: 18px !important;
  color: #7e79ff !important;
  font-family: 'Nunito', sans-serif !important;
  text-transform: lowercase;
}
#screen-learning-plan[data-plan-mode="tutor"] #plan-level {
  font-size: 15px !important;
  color: var(--muted) !important;
}
#screen-learning-plan[data-plan-mode="tutor"] #plan-info > div[style*="Примерная продолжительность"] {
  opacity: 0.9;
}
#screen-learning-plan[data-plan-mode="tutor"] #learning-plan-topics {
  gap: 12px;
}
#screen-learning-plan .plan-overview {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
#screen-learning-plan .plan-overview-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}
#screen-learning-plan .plan-overview-subject {
  font-size: 15px;
  font-weight: 800;
  margin-bottom: 4px;
}
#screen-learning-plan .plan-overview-topic {
  font-size: 18px;
  font-family: 'Fredoka One', cursive;
  color: var(--purple2);
}
#screen-learning-plan .plan-overview-level {
  text-align: right;
}
#screen-learning-plan .plan-overview-level-label {
  font-size: 14px;
  color: var(--muted);
}
#screen-learning-plan .plan-overview-level-value {
  font-size: 20px;
  font-weight: 800;
  color: var(--gold);
}
#screen-learning-plan .plan-overview-meta {
  font-size: 13px;
  color: var(--muted);
}
#screen-learning-plan .plan-overview-source {
  font-size: 12px;
  color: var(--muted);
}
#screen-learning-plan[data-plan-mode="tutor"] #plan-track-selector {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-subject-card {
  width: 100%;
  border-radius: 18px;
  padding: 14px 14px 10px;
  border: 1px solid rgba(112,136,214,0.22);
  background: linear-gradient(180deg, rgba(30,36,66,0.96), rgba(24,30,56,0.96));
  box-shadow: none;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-subject-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-subject-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-subject-title {
  font-size: 24px;
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: 0.01em;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-subject-meta {
  font-size: 14px;
  color: var(--muted);
  margin-top: 10px;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-topic-list {
  display: flex;
  flex-direction: column;
  margin-top: 10px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-topic-list.plan-topic-list-standalone {
  margin-top: 0;
  border-top: none;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-topic-item {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 8px 6px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  background: transparent;
  border-radius: 0;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-topic-item:last-child {
  border-bottom: none;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-topic-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: nowrap;
  cursor: pointer;
  transition: background 0.18s ease, transform 0.18s ease;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-topic-header:hover {
  background: transparent;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-topic-header:active {
  transform: scale(0.995);
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-topic-header.active {
  background: transparent;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-topic-row-left {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-topic-icon {
  color: #6ce7b6;
  font-size: 20px;
  font-weight: 900;
  width: 14px;
  text-align: center;
  flex-shrink: 0;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-topic-label {
  font-size: 17px;
  font-weight: 800;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-topic-empty {
  padding: 14px 2px 2px;
  font-size: 14px;
  color: var(--muted);
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-route-card,
#screen-learning-plan[data-plan-mode="tutor"] .plan-info-card {
  background: linear-gradient(180deg, rgba(24,28,52,0.90), rgba(20,24,45,0.90));
  border: 1px solid rgba(112,136,214,0.16);
  border-radius: 16px;
  padding: 12px;
  box-shadow: none;
}
#screen-learning-plan[data-plan-mode="tutor"] #plan-header-actions-host {
  margin: 0 0 12px;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-route-card {
  opacity: 1;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-info-card {
  background: linear-gradient(180deg, rgba(18,20,36,0.9), rgba(14,16,30,0.92));
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-info-card-tight {
  margin-bottom: 12px;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-section-title {
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: #d8defe;
  margin-bottom: 6px;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-route-text {
  font-size: 13px;
  line-height: 1.45;
  color: rgba(222,228,255,0.84);
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-route-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-route-actions .btn {
  min-height: 34px;
  padding: 0 12px;
  border-radius: 10px;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-subject-card .badge,
#screen-learning-plan[data-plan-mode="tutor"] .plan-topic-header .badge {
  min-height: 24px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-topic-header .badge {
  opacity: 1;
  margin-left: auto;
  flex-shrink: 0;
  background: rgba(255,184,0,0.12);
  color: #e9c15b;
  border: 1px solid rgba(255,184,0,0.18);
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-topic-actions {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  margin-top: 6px;
  margin-left: 24px;
  padding: 0;
  border: none;
  background: transparent;
  border-radius: 0;
  box-shadow: none;
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-diagnostic-status {
  margin-top: 6px;
  margin-left: 24px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  color: #8ee6ae;
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-diagnostic-status.topic-diagnostic-status-interactive {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  width: auto;
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-diagnostic-toggle {
  appearance: none;
  border: 0;
  background: transparent;
  color: inherit;
  padding: 0;
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font: inherit;
  cursor: pointer;
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-diagnostic-toggle .pending-diagnostic-toggle-icon {
  color: rgba(202,242,217,0.84);
  font-size: 12px;
  line-height: 1;
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-diagnostic-status .pending-diagnostic-panel {
  width: 100%;
  margin-top: 6px;
  padding: 8px 0 0;
  border: 0;
  border-radius: 0;
  background: transparent;
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-diagnostic-status .pending-diagnostic-actions {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 8px;
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-diagnostic-status .pending-diagnostic-actions .btn.btn-sm {
  min-height: 30px;
  padding: 5px 10px;
  border-radius: 8px;
  width: auto;
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-diagnostic-status .pending-diagnostic-questions {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-diagnostic-question {
  width: 100%;
  padding: 8px 0;
  border-radius: 0;
  border: 0;
  border-top: 1px solid rgba(255,255,255,0.08);
  background: transparent;
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-diagnostic-question-meta {
  font-size: 12px;
  color: var(--muted);
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-diagnostic-question-text {
  margin-top: 5px;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.42;
  color: var(--text);
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-diagnostic-question-options {
  margin-top: 6px;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.45;
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-diagnostic-question-actions {
  margin-top: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-diagnostic-empty {
  font-size: 13px;
  color: var(--muted);
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-diagnostic-status-icon {
  width: 16px;
  height: 16px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(78,203,113,0.18);
  border: 1px solid rgba(78,203,113,0.3);
  color: #86f1b2;
  font-size: 11px;
  line-height: 1;
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-diagnostic-status-text {
  color: rgba(202,242,217,0.94);
  line-height: 1.2;
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-local-action {
  appearance: none;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 0 12px;
  margin: 0;
  min-height: 32px;
  width: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #f5f7ff;
  font-size: 13px;
  font-weight: 600;
  line-height: 1;
  text-align: left;
  cursor: pointer;
  border-radius: 8px;
  box-shadow: none;
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-local-action:hover {
  background: rgba(255,255,255,0.09);
  border-color: rgba(255,255,255,0.12);
  color: #ffffff;
  text-decoration: none;
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-local-action:active {
  transform: none;
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-local-action.topic-local-action-danger {
  color: #ffb1b1;
  border-color: rgba(255,112,112,0.28);
  background: rgba(255,112,112,0.08);
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-local-action.topic-local-action-danger:hover {
  color: #ffc0c0;
  border-color: rgba(255,130,130,0.34);
  background: rgba(255,112,112,0.11);
}
.topic-local-action {
  appearance: none;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 0 12px;
  margin: 0;
  min-height: 32px;
  width: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #f5f7ff;
  font-size: 13px;
  font-weight: 600;
  line-height: 1;
  text-align: left;
  cursor: pointer;
  border-radius: 10px;
  box-shadow: none;
}
.topic-local-action:hover {
  background: rgba(255,255,255,0.09);
  border-color: rgba(255,255,255,0.12);
  color: #ffffff;
  text-decoration: none;
}
.topic-local-action:active {
  transform: none;
}
.topic-local-action.topic-local-action-danger {
  color: #ffb1b1;
  border-color: rgba(255,112,112,0.28);
  background: rgba(255,112,112,0.08);
}
.topic-local-action.topic-local-action-danger:hover {
  color: #ffc0c0;
  border-color: rgba(255,130,130,0.34);
  background: rgba(255,112,112,0.11);
}
.plan-inline-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  line-height: 1.4;
  color: rgba(224,231,255,0.88);
}
.plan-inline-status-icon {
  font-size: 12px;
  line-height: 1;
}
.plan-inline-status-warning {
  color: #e7c975;
  margin: 4px 0 8px;
}
.plan-inline-status-progress {
  color: #9edfff;
}
.plan-inline-status-text {
  color: inherit;
}
.plan-inline-meta {
  margin: 4px 0 0 18px;
  font-size: 12px;
  line-height: 1.4;
  color: rgba(181,199,236,0.88);
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-info-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-info-caption {
  font-size: 11px;
  color: rgba(190,198,232,0.74);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-info-rows {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 8px;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-info-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-info-label {
  font-size: 12px;
  color: rgba(174,183,218,0.78);
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-info-value {
  font-size: 12px;
  font-weight: 700;
  color: #f2f5ff;
  text-align: right;
  white-space: nowrap;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-info-empty {
  font-size: 12px;
  color: rgba(174,183,218,0.72);
}
.pending-diagnostic-shell-inline {
  margin-bottom: 10px;
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-card {
  background: linear-gradient(180deg, rgba(26,30,57,0.90), rgba(22,26,48,0.90));
  border: 1px solid rgba(118,133,190,0.14);
  border-radius: 14px;
  box-shadow: none;
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-card.locked {
  opacity: 0.78;
  pointer-events: auto;
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, #4659b4, #2f3e72);
  box-shadow: none;
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-name {
  font-size: 15px;
  letter-spacing: 0.01em;
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-status {
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.08);
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-status.active {
  background: rgba(96,119,220,0.16);
  color: #aab9ff;
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-status.locked {
  background: rgba(255,255,255,0.05);
  color: #9aa0bd;
}
#screen-learning-plan[data-plan-mode="tutor"] .lesson-item {
  background: rgba(11,14,28,0.28);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: 12px;
}
#screen-learning-plan[data-plan-mode="tutor"] .lesson-item:hover {
  background: rgba(19,24,43,0.52);
  border-color: rgba(112,136,214,0.20);
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-header-clickable {
  cursor: pointer;
}
#screen-learning-plan[data-plan-mode="tutor"] .tutor-topic-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-context-blocks {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 0 0 10px;
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-card.expanded {
  border-color: rgba(112,136,214,0.28);
  box-shadow: 0 10px 28px rgba(0,0,0,0.16);
}
#screen-learning-plan[data-plan-mode="tutor"] .topic-card.mini-exam-ready {
  border-color: rgba(78,203,113,0.28);
  box-shadow: 0 12px 30px rgba(78,203,113,0.10);
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-mini-exam-cta {
  width: auto;
  padding-inline: 14px;
  box-shadow: 0 0 0 1px rgba(124,110,247,0.22), 0 10px 22px rgba(124,110,247,0.16);
}
.plan-role-caption {
  margin-top: 10px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 11px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
#screen-learning-plan[data-plan-mode="student"] .plan-role-caption {
  background: rgba(94,212,183,0.10);
  border: 1px solid rgba(94,212,183,0.22);
  color: #7ce5d3;
}
#screen-learning-plan[data-plan-mode="tutor"] .plan-role-caption {
  background: rgba(112,136,214,0.12);
  border: 1px solid rgba(112,136,214,0.22);
  color: #b6c2ff;
}
.topic-card {
  background:var(--card);
  border:1px solid var(--border);
  border-radius:16px;
  padding:16px;
  transition:all 0.2s;
}
.topic-card.active {
  border-color:var(--purple);
  background:rgba(124,110,247,0.1);
}
.topic-card.locked {
  opacity:0.6;
  pointer-events:none;
}
.topic-header {
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:12px;
}
.topic-icon {
  width:48px;
  height:48px;
  border-radius:12px;
  background:linear-gradient(135deg, var(--purple), var(--blue));
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:24px;
  color:#fff;
}
.topic-name {
  font-size:16px;
  font-weight:800;
  color:var(--text);
  flex:1;
}
.topic-status {
  padding:4px 10px;
  border-radius:10px;
  font-size:12px;
  font-weight:700;
  text-transform:uppercase;
}
.topic-status.active { background:rgba(124,110,247,0.2); color:var(--purple2); }
.topic-status.completed { background:rgba(78,203,113,0.2); color:var(--green); }
.topic-status.locked { background:rgba(142,138,176,0.2); color:var(--muted); }
.topic-lessons {
  display:flex;
  flex-direction:column;
  gap:8px;
}
.lesson-item {
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px;
  background:var(--bg2);
  border-radius:10px;
  cursor:pointer;
  transition:all 0.2s;
}
.lesson-item:hover {
  background:var(--card);
}
.lesson-checkbox {
  width:24px;
  height:24px;
  border-radius:8px;
  border:2px solid var(--border);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:14px;
}
.lesson-item.completed .lesson-checkbox {
  background:var(--green);
  border-color:var(--green);
  color:#fff;
}
.lesson-item.completed .lesson-title {
  opacity:0.78;
  color: rgba(255,255,255,0.82);
}

/* ===== STUDENT: SKILL TREE ===== */
.skill-tree {
  display:flex;
  flex-direction:column;
  gap:16px;
}
.skill-topic-row {
  display:flex;
  align-items:flex-start;
  gap:16px;
}
.skill-topic-item {
  background:var(--card);
  border:1px solid var(--border);
  border-radius:14px;
  padding:14px;
  min-width:200px;
  flex:1;
  cursor:pointer;
  transition:all 0.2s;
}
.skill-topic-item:hover {
  border-color:var(--purple);
  background:var(--card2);
}
.skill-topic-item.completed {
  border-color:var(--green);
  background:rgba(78,203,113,0.1);
}
.skill-topic-item.locked {
  opacity:0.5;
  pointer-events:none;
}
.skill-icon {
  width:40px;
  height:40px;
  border-radius:10px;
  background:linear-gradient(135deg, var(--purple), var(--blue));
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:20px;
  margin-bottom:8px;
}
.skill-topic-item.completed .skill-icon {
  background:linear-gradient(135deg, var(--green), #2FBF68);
}
.skill-topic-item.locked .skill-icon {
  background:var(--bg2);
  color:var(--muted);
}
.skill-name {
  font-size:14px;
  font-weight:800;
  margin-bottom:4px;
}
.skill-progress {
  display:flex;
  align-items:center;
  gap:8px;
}
.skill-progress-bar {
  flex:1;
  height:6px;
  background:var(--bg2);
  border-radius:3px;
  overflow:hidden;
}
.skill-progress-fill {
  height:100%;
  background:linear-gradient(90deg, var(--purple), var(--blue));
  transition:width 0.3s;
}
.skill-topic-item.completed .skill-progress-fill {
  background:var(--green);
}
.skill-percent {
  font-size:12px;
  font-weight:700;
  color:var(--muted);
}
.skill-connector {
  width:40px;
  height:2px;
  background:var(--border);
  align-self:center;
  margin-top:-20px;
}
.skill-connector.active {
  background:var(--purple);
}
.skill-connector.completed {
  background:var(--green);
}
.skill-subtopics {
  margin-left:60px;
  display:flex;
  flex-direction:column;
  gap:8px;
}
.skill-subtopic {
  background:var(--bg2);
  border:1px solid var(--border);
  border-radius:10px;
  padding:10px 14px;
  font-size:13px;
  cursor:pointer;
  transition:all 0.2s;
}
.skill-subtopic:hover {
  background:var(--card);
  border-color:var(--purple);
}
.skill-subtopic.completed {
  border-color:var(--green);
  color:var(--green);
}

/* ===== STUDENT/TUTOR: SCHEDULE ===== */
.schedule-item {
  background: var(--card-gradient);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
}
.schedule-item::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.05), transparent);
  pointer-events: none;
}
.schedule-item:hover {
  background: var(--card-gradient-hover);
  border-color: var(--border-strong);
}
.schedule-day {
  min-width: 100px;
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
}
.schedule-time {
  min-width: 80px;
  color: var(--purple2);
  font-weight: 800;
}
.schedule-topic {
  flex: 1;
  font-size: 13px;
  color: var(--muted);
}
.schedule-delete {
  color: var(--coral);
  cursor: pointer;
  padding: 4px;
  font-size: 18px;
  transition: all var(--transition);
}
.schedule-delete:hover { opacity: 0.8; }
.schedule-delete:active { transform: scale(0.95); }
/* ===== STUDENT/ADMIN: STATS ===== */
.stat-box {
  background: var(--card-gradient);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 16px;
  text-align: center;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
}
.stat-box::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.05), transparent);
  pointer-events: none;
}
.stat-box:hover {
  background: var(--card-gradient-hover);
}
.stat-label {
  font-size: 13px;
  color: var(--muted);
  margin-top: 6px;
  font-weight: 600;
}
.stat-value {
  font-size: 32px;
  font-weight: 800;
  color: var(--purple2);
  font-family: 'Fredoka One', cursive;
  line-height: 1;
}
.weak-area-item {
  background: var(--card2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  transition: all var(--transition);
}
.weak-area-item:hover {
  background: var(--card-hover);
  border-color: var(--border-strong);
}
.weak-area-name {
  flex: 1;
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
}
.weak-area-percent {
  font-size: 14px;
  font-weight: 800;
}
.weak-area-percent.high { color: var(--coral); }
.weak-area-percent.med { color: var(--gold); }
.weak-area-percent.low { color: var(--green); }
/* ===== STUDENT: ACHIEVEMENTS ===== */
.achievement-item {
  background: var(--card-gradient);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
}
.achievement-item::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.05), transparent);
  pointer-events: none;
}
.achievement-item:hover {
  background: var(--card-gradient-hover);
}
.achievement-item.unlocked {
  border-color: rgba(242,214,75,0.30);
  background: linear-gradient(180deg, rgba(242,214,75,0.08) 0%, var(--card) 100%);
  box-shadow: 0 14px 40px rgba(6,14,35,0.45), inset 0 1px 0 rgba(242,214,75,0.08);
}
.achievement-icon {
  width: 50px;
  height: 50px;
  border-radius: 14px;
  background: var(--card2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
  transition: all var(--transition);
}
.achievement-item.unlocked .achievement-icon {
  background: linear-gradient(135deg, var(--gold), #e0c53a);
  box-shadow: 0 6px 16px rgba(242,214,75,0.20);
}
.achievement-info {
  flex: 1;
  min-width: 0;
}
.achievement-title {
  font-size: 15px;
  font-weight: 800;
  margin-bottom: 4px;
  color: var(--text);
}
.achievement-desc {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.4;
}
.achievement-item.locked .achievement-icon {
  opacity: 0.5;
}
.achievement-item.locked .achievement-title {
  color: var(--muted-subtle);
}

/* ==========================================================================
   RESPONSIVE: STUDENT DETAIL
   ========================================================================== */
@media (max-width: 430px) {
  #screen-student-detail { padding: 12px; gap: 12px; }
  .student-detail-actions { padding: 10px 12px 6px; gap: 8px; }
  .student-detail-content { padding: 0 12px; gap: 12px; }
  #student-detail-context { padding: 0 12px 8px !important; }
  .student-detail-action-btn {
    min-height: 48px;
    font-size: 13px;
    padding: 10px 12px;
  }
  .stat-grid { gap: 8px; }
  .stat-box { padding: 12px; }
  .stat-num { font-size: 24px; }
  .stat-label { font-size: 12px; }
}

@media (max-width: 360px) {
  .student-detail-actions { grid-template-columns: 1fr; }
  .detail-info-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }
  .detail-info-value { text-align: left; }
}

/* ==========================================================================
   GLOBAL MOBILE DENSITY
   ========================================================================== */
@media (max-width: 768px) {
  .header {
    padding-left: max(8px, env(safe-area-inset-left));
    padding-right: max(8px, env(safe-area-inset-right));
  }
  .tutor-header,
  .student-home-header,
  .task-header,
  .parent-header {
    padding-left: max(8px, env(safe-area-inset-left));
    padding-right: max(8px, env(safe-area-inset-right));
  }
  .student-list,
  .task-body,
  .parent-body {
    padding-left: max(8px, env(safe-area-inset-left));
    padding-right: max(8px, env(safe-area-inset-right));
  }
  #screen-welcome,
  #screen-apikey,
  #screen-add-student,
  #screen-result {
    padding-left: max(8px, env(safe-area-inset-left));
    padding-right: max(8px, env(safe-area-inset-right));
  }
  .home-actions,
  .achievements-row,
  .achievements-title,
  .history-section {
    padding-left: max(8px, env(safe-area-inset-left));
    padding-right: max(8px, env(safe-area-inset-right));
  }
  #screen-student-detail,
  #screen-learning-plan,
  #screen-schedule,
  #screen-assessment,
  #screen-tutor-dashboard,
  #screen-student,
  #screen-task,
  #screen-parent {
    padding-left: max(8px, env(safe-area-inset-left));
    padding-right: max(8px, env(safe-area-inset-right));
  }
  .student-detail-actions,
  .student-detail-content,
  #student-detail-context {
    padding-left: max(8px, env(safe-area-inset-left)) !important;
    padding-right: max(8px, env(safe-area-inset-right)) !important;
  }
  .card,
  .card2,
  .student-card,
  .stat-box {
    border-color: rgba(124,110,247,0.14);
  }
}

/* ==========================================================================
   UTILITIES / ANIMATIONS
   ========================================================================== */
@keyframes modalIn {
  from { opacity:0; transform:scale(0.95); }
  to { opacity:1; transform:scale(1); }
}

/* ==========================================================================
   GLOBAL READABILITY FLATTENING
   One screen = one horizontal rhythm. One section = one card max.
   ========================================================================== */
:root {
  --screen-pad: 18px;
  --section-gap: 14px;
  --card-pad: 16px;
  --inner-pad: 12px;
  --soft-border: rgba(124,110,247,0.12);
  --row-divider: rgba(255,255,255,0.07);
}

.header,
.tutor-header,
.student-home-header,
.task-header,
.parent-header {
  padding-left: var(--screen-pad);
  padding-right: var(--screen-pad);
}

#screen-welcome,
#screen-apikey,
#screen-add-student,
#screen-result,
#screen-student-detail,
#screen-learning-plan,
#screen-schedule,
#screen-assessment,
#screen-tutor-dashboard,
#screen-student,
#screen-task,
#screen-parent {
  padding-left: 0;
  padding-right: 0;
}

.student-list,
.student-detail-content,
.task-body,
.parent-body,
.assessment-shell,
#learning-plan-topics,
#student-detail-context,
.home-actions,
.history-section,
.achievements-row,
.achievements-title {
  padding-left: var(--screen-pad) !important;
  padding-right: var(--screen-pad) !important;
}

.student-list,
.student-detail-content,
.parent-body,
.task-body,
.assessment-shell {
  gap: var(--section-gap);
}

.student-detail-actions {
  padding-left: var(--screen-pad);
  padding-right: var(--screen-pad);
}

.card,
.card2,
.student-card,
.progress-card,
.task-queue-item,
.task-queue-item-modern,
.topic-card,
.schedule-item,
.achievement-item,
.current-task-card,
.xp-section,
.explanation-box,
.assessment-question-card,
.assessment-results-card,
.assessment-hero,
#plan-info {
  padding: var(--card-pad);
  border-color: var(--soft-border);
  box-shadow: 0 6px 20px rgba(0,0,0,0.20);
}

.student-card,
.progress-card,
.topic-card,
.schedule-item,
.achievement-item,
.task-queue-item,
.task-queue-item-modern,
.current-task-card,
.xp-section,
.assessment-question-card,
.assessment-results-card,
.assessment-hero {
  border-radius: 16px;
}

.notification-item,
.lesson-item,
.task-meta-panel,
.queue-toolbar,
.api-info,
.hint-text,
.group-pool,
.group-col,
.skill-topic-item,
.skill-subtopic,
.progress-card,
.topic-stage-card {
  border-color: transparent;
  box-shadow: none;
}

.task-meta-panel,
.queue-toolbar,
.api-info,
.hint-text,
.topic-stage-card,
.group-pool,
.group-col,
.skill-subtopic,
.lesson-item {
  padding: var(--inner-pad);
}

.detail-info-list,
.topic-lessons,
.skill-tree,
.skill-subtopics {
  gap: 10px;
}

.history-item,
.lesson-item,
.notification-item {
  border-bottom: 1px solid var(--row-divider);
}

.history-item:last-child,
.lesson-item:last-child,
.notification-item:last-child {
  border-bottom: none;
}

.history-item,
.lesson-item,
.notification-item {
  background: transparent;
  border-radius: 0;
}

.task-question {
  padding: 18px 16px;
  border-color: var(--soft-border);
  box-shadow: none;
}

.option-btn,
#assessment-options .option-btn {
  box-shadow: none;
}

.topic-card,
.student-card,
.progress-card,
.task-queue-item,
.task-queue-item-modern {
  background-image: none;
}

.student-detail-content .card .card,
.student-detail-content .card .card2,
.parent-body .card .card,
.parent-body .card .card2,
.task-body .card .card,
.task-body .card .card2,
#learning-plan-topics .topic-card .lesson-item,
#learning-plan-topics .topic-card .topic-card {
  border-color: transparent;
  box-shadow: none;
}

.student-detail-content .card,
.parent-body .card,
.task-body .card,
.assessment-shell .card {
  overflow: visible;
}

.detail-info-row {
  padding-bottom: 8px;
  border-bottom: 1px solid var(--row-divider);
}

.detail-info-row:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

@media (max-width: 768px) {
  :root {
    --screen-pad: 14px;
    --section-gap: 12px;
    --card-pad: 14px;
    --inner-pad: 10px;
  }

  .student-detail-actions {
    gap: 8px;
    padding-top: 10px;
    padding-bottom: 6px;
  }

  .card,
  .card2,
  .student-card,
  .progress-card,
  .task-queue-item,
  .task-queue-item-modern,
  .topic-card,
  .schedule-item,
  .achievement-item,
  .current-task-card,
  .xp-section,
  .explanation-box,
  .assessment-question-card,
  .assessment-results-card,
  .assessment-hero,
  #plan-info {
    border-radius: 14px;
  }

  .task-question {
    font-size: 18px;
    line-height: 1.45;
  }

  .student-card-top,
  .topic-header {
    margin-bottom: 10px;
  }
}

@media (max-width: 430px) {
  #screen-learning-plan[data-plan-mode="tutor"] .plan-subject-title {
    font-size: 22px;
  }
  #screen-learning-plan[data-plan-mode="tutor"] .plan-topic-label {
    font-size: 16px;
  }
  #screen-learning-plan[data-plan-mode="tutor"] .plan-topic-header {
    align-items: center;
    flex-direction: row;
  }
  #screen-learning-plan[data-plan-mode="tutor"] .plan-topic-header .badge {
    align-self: center;
  }
  #screen-learning-plan[data-plan-mode="tutor"] .plan-topic-actions {
    margin-left: 24px;
    padding-left: 0;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
  }
  :root {
    --screen-pad: 12px;
    --card-pad: 12px;
    --inner-pad: 9px;
  }

  .student-detail-content,
  .task-body,
  .parent-body,
  .assessment-shell,
  .student-list,
  .home-actions,
  .history-section,
  .achievements-row,
  .achievements-title,
  #learning-plan-topics,
  #student-detail-context,
  .student-detail-actions {
    padding-left: var(--screen-pad) !important;
    padding-right: var(--screen-pad) !important;
  }

  .option-btn,
  #assessment-options .option-btn {
    padding: 12px 13px;
    font-size: 15px;
    gap: 10px;
  }

  .task-question,
  .assessment-question {
    font-size: 18px;
  }
}

/* ==========================================================================
   TARGETED READABILITY PASS: learning plan pending diagnostic
   ========================================================================== */
.pending-diagnostic-shell {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Diagnostic Skills List - Increased Height */
#diagnostic-skills-list {
  max-height: 600px;
  overflow-y: auto;
}

@media (max-width: 768px) {
  #diagnostic-skills-list {
    max-height: 50vh;
  }
}

.pending-diagnostic-toggle {
  appearance: none;
  -webkit-appearance: none;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(245,197,66,0.26);
  background: linear-gradient(135deg, rgba(245,197,66,0.18), rgba(232,168,0,0.16));
  color: var(--gold);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-family: inherit;
  text-align: left;
  box-shadow: none;
  outline: none;
  cursor: pointer;
  min-height: 48px;
  line-height: 1.2;
}

.pending-diagnostic-toggle.btn {
  width: 100%;
  justify-content: space-between;
  white-space: normal;
}

.pending-diagnostic-alert {
  width: 100%;
  justify-content: space-between;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid rgba(245,197,66,0.28);
  background: linear-gradient(180deg, rgba(245,197,66,0.10), rgba(255,255,255,0.03));
  color: #ffd36d;
  text-transform: none;
  letter-spacing: 0;
  font-size: 15px;
  font-weight: 800;
}

.pending-diagnostic-alert-left {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.pending-diagnostic-alert-icon {
  width: 28px;
  height: 28px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(242,214,75,0.14);
  border: 1px solid rgba(242,214,75,0.28);
  color: #ffd36d;
  font-size: 16px;
  font-weight: 900;
  flex-shrink: 0;
}

.pending-diagnostic-toggle-icon {
  font-size: 16px;
  line-height: 1;
  color: var(--gold);
  flex-shrink: 0;
}

.pending-diagnostic-panel {
  padding: 12px;
  border-radius: 14px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
}

.pending-diagnostic-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.pending-diagnostic-questions .card {
  box-shadow: none;
  border-color: rgba(255,255,255,0.06);
  background: rgba(255,255,255,0.03);
}

@media (max-width: 430px) {
  #screen-learning-plan[data-plan-mode="tutor"] .plan-subject-title {
    font-size: 22px;
  }
  #screen-learning-plan[data-plan-mode="tutor"] .plan-topic-label {
    font-size: 16px;
  }
  #screen-learning-plan[data-plan-mode="tutor"] .plan-topic-header {
    align-items: center;
    flex-direction: row;
  }
  #screen-learning-plan[data-plan-mode="tutor"] .plan-topic-header .badge {
    align-self: center;
  }
  #screen-learning-plan[data-plan-mode="tutor"] .plan-topic-actions {
    margin-left: 24px;
    padding-left: 0;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
  }
  .pending-diagnostic-panel {
    padding: 10px;
  }

  .pending-diagnostic-actions {
    flex-direction: column;
  }

  .pending-diagnostic-actions .btn {
    width: 100%;
  }
}

/* ==========================================================================
   TARGETED READABILITY PASS: pending approval flow
   ========================================================================== */
#screen-pending-tasks .card.pending-approve-group {
  padding: 12px;
  border-radius: var(--radius);
  box-shadow: none;
  background: var(--card2);
}

#screen-pending-tasks .pending-approve-task {
  border-top: 1px solid var(--border);
}

#screen-pending-tasks .pending-approve-task:first-child {
  border-top: none;
}

#screen-pending-tasks .pending-approve-task .badge {
  margin-left: 10px;
}

#screen-pending-tasks .pending-approve-group-actions .btn.btn-sm,
#screen-pending-tasks .pending-approve-task .btn.btn-sm {
  min-height: 34px;
  padding: 7px 12px;
  border-radius: 10px;
}

#approve-tasks-modal .approve-tasks-modal-card {
  border-color: var(--border);
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.26);
}

#approve-tasks-modal .input-field {
  padding: 10px 12px;
  border-color: var(--border);
  border-radius: 12px;
  background: var(--card2);
}

#approve-tasks-modal .approve-tasks-modal-btn {
  min-height: 42px;
  padding: 10px 12px;
  font-size: 15px;
  border-radius: 12px;
}

@media (max-width: 430px) {
  #screen-pending-tasks .pending-approve-group-header {
    margin-bottom: 8px;
  }

  #screen-pending-tasks .pending-approve-group-actions {
    width: 100%;
  }

  #screen-pending-tasks .pending-approve-group-actions .btn {
    flex: 1;
    min-width: 0;
  }

  #approve-tasks-modal {
    padding: 12px !important;
  }

  #approve-tasks-modal .approve-tasks-modal-card {
    padding: 12px 12px 10px !important;
  }

  #approve-tasks-modal .approve-tasks-modal-actions {
    flex-direction: column;
  }
}

/* ==========================================================================
   SUBJECT DETAIL — DARK GAMIFIED REDESIGN (task-016)
   ========================================================================== */

/* --- Screen shell --- */
#screen-student-subject {
  background: linear-gradient(180deg, #0F1E3D 0%, #14254B 100%) !important;
  color: #FFFFFF;
}

#screen-student-subject .header {
  background: linear-gradient(180deg, rgba(123,109,255,0.12) 0%, transparent 100%);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  padding: 14px 20px;
}

#screen-student-subject .header-title {
  font-family: 'Nunito', sans-serif;
  font-size: 20px;
  font-weight: 900;
  color: #FFFFFF;
  letter-spacing: -0.01em;
}

#screen-student-subject .back-btn {
  background: rgba(34,55,106,0.8);
  border: 1px solid rgba(255,255,255,0.08);
  color: #FFFFFF;
}

#screen-student-subject .back-btn:active {
  background: rgba(123,109,255,0.3);
}

/* --- Pill segmented tabs --- */
#screen-student-subject .subject-tabs {
  display: flex;
  background: rgba(27,47,92,0.6);
  margin: 12px 20px 0;
  border-radius: 999px;
  padding: 4px;
  border: 1px solid rgba(255,255,255,0.06);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  gap: 2px;
}

#screen-student-subject .subject-tab {
  flex: 1;
  padding: 9px 14px;
  text-align: center;
  font-size: 13px;
  font-weight: 800;
  color: #AFC2E8;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  background: transparent;
  position: relative;
  user-select: none;
}

#screen-student-subject .subject-tab:active {
  transform: scale(0.96);
}

#screen-student-subject .subject-tab.active {
  background: linear-gradient(135deg, #7B6DFF 0%, #6458e0 100%);
  color: #FFFFFF;
  box-shadow: 0 2px 12px rgba(123,109,255,0.35), 0 0 0 1px rgba(123,109,255,0.15) inset;
}

#screen-student-subject .subject-tab:not(.active):hover {
  color: #FFFFFF;
  background: rgba(255,255,255,0.04);
}

/* --- Content container --- */
#screen-student-subject .student-detail-content {
  padding: 16px 20px 20px;
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* --- Action switcher (Задание / Диагностика) --- */
.subject-action-switcher {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 16px;
}

.subject-action-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 16px;
  border: none;
  cursor: pointer;
  font-family: 'Nunito', sans-serif;
  font-size: 14px;
  font-weight: 800;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  min-height: 52px;
  text-align: left;
  width: 100%;
}

.subject-action-card:active {
  transform: scale(0.97);
}

.subject-action-card.primary {
  background: linear-gradient(135deg, #7B6DFF 0%, #6458e0 100%);
  color: #FFFFFF;
  box-shadow: 0 4px 16px rgba(123,109,255,0.3), 0 0 0 1px rgba(123,109,255,0.12) inset;
}

.subject-action-card.primary:active {
  box-shadow: 0 2px 8px rgba(123,109,255,0.25);
}

.subject-action-card.secondary {
  background: linear-gradient(135deg, rgba(34,55,106,0.9), rgba(27,47,92,0.9));
  color: #AFC2E8;
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.subject-action-card.secondary:active {
  background: linear-gradient(135deg, rgba(42,68,128,0.95), rgba(34,55,106,0.95));
  color: #FFFFFF;
}

.subject-action-card-icon {
  font-size: 20px;
  line-height: 1;
  flex-shrink: 0;
}

.subject-action-card-label {
  flex: 1;
  min-width: 0;
}

/* --- Draft header --- */
.subject-draft-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
  padding: 0 2px;
}

.subject-draft-count-label {
  font-size: 12px;
  font-weight: 700;
  color: #AFC2E8;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  opacity: 0.7;
}

.subject-draft-select-btn {
  padding: 6px 14px;
  border-radius: 999px;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.1);
  color: #AFC2E8;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  font-family: 'Nunito', sans-serif;
}

.subject-draft-select-btn:active {
  background: rgba(255,255,255,0.04);
  border-color: rgba(255,255,255,0.15);
}

/* --- Bulk actions toolbar --- */
.subject-queue-bulk-actions {
  background: rgba(27,47,92,0.5) !important;
  border: 1px solid rgba(255,255,255,0.06) !important;
  border-radius: 14px !important;
  padding: 10px 14px !important;
  margin-bottom: 12px !important;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.subject-queue-bulk-actions label {
  color: #AFC2E8 !important;
}

.subject-queue-bulk-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 14px 16px !important;
}

.subject-queue-bulk-actions-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.subject-queue-bulk-select-all {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  min-width: 0;
  font-weight: 700;
  color: #d7e4ff !important;
}

.subject-queue-bulk-select-all input {
  width: 15px;
  height: 15px;
  margin: 0;
  accent-color: #7B6DFF;
  flex-shrink: 0;
}

.subject-queue-bulk-select-all span {
  line-height: 1.35;
}

.subject-queue-bulk-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 30px;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(123,109,255,0.16);
  border: 1px solid rgba(123,109,255,0.22);
  color: #ffffff;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.01em;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.06);
}

.subject-queue-bulk-actions-buttons {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.subject-queue-bulk-actions .btn {
  border-radius: 999px !important;
  padding: 6px 14px !important;
  font-size: 12px !important;
  font-weight: 700 !important;
  min-height: auto !important;
  width: 100%;
}

.subject-queue-bulk-actions .btn:disabled {
  opacity: 0.35;
}

@media (max-width: 420px) {
  .subject-queue-bulk-actions {
    gap: 10px;
    padding: 12px 14px !important;
  }

  .subject-queue-bulk-actions-top {
    align-items: stretch;
  }

  .subject-queue-bulk-count {
    width: 100%;
    justify-content: flex-start;
  }

  .subject-queue-bulk-actions-buttons {
    grid-template-columns: 1fr;
  }
}

/* --- Task cards --- */
.subject-task-card-wrapper {
  position: relative;
  overflow: hidden;
  border-radius: 20px;
}

.subject-task-card {
  background: linear-gradient(160deg, #22376A 0%, #1B2F5C 100%);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 20px;
  padding: 16px 18px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.25), 0 0 0 1px rgba(255,255,255,0.03) inset;
  transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.2s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.2s cubic-bezier(0.4, 0, 0.2, 1), background 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  z-index: 2;
  touch-action: pan-y;
  cursor: pointer;
}

.subject-task-card.is-swiping {
  transition: none;
}

.subject-task-card.is-swipe-open {
  transform: translateX(-88px) !important;
}

.subject-task-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.08), transparent);
  pointer-events: none;
}

.subject-task-card:active:not(.is-swipe-open):not(.is-swiping) {
  transform: translateY(1px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
  border-color: rgba(123,109,255,0.15);
}

@media (hover: hover) {
  .subject-task-card:hover:not(.is-swipe-open):not(.is-swiping) {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(0,0,0,0.3), 0 0 16px rgba(123,109,255,0.08);
    border-color: rgba(123,109,255,0.12);
    background: linear-gradient(160deg, #2A4480 0%, #22376A 100%);
  }
}

.subject-task-card-swipe-delete {
  position: absolute;
  top: 0;
  right: 0;
  width: 88px;
  height: 100%;
  border: 0;
  border-radius: 0 20px 20px 0;
  background: linear-gradient(145deg, #ff7373 0%, #e65454 100%);
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  z-index: 1;
}

.subject-task-card-swipe-delete:active {
  background: linear-gradient(145deg, #e65454 0%, #cf4444 100%);
}

.subject-task-card-inner {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.subject-task-card-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 900;
  color: #FFFFFF;
  flex-shrink: 0;
  margin-top: 1px;
  background: linear-gradient(135deg, #7B6DFF 0%, #6458e0 100%);
  box-shadow: 0 2px 8px rgba(123,109,255,0.3);
}

.subject-task-card-body {
  flex: 1;
  min-width: 0;
}

.subject-task-card-title {
  font-size: 14px;
  font-weight: 700;
  color: #FFFFFF;
  line-height: 1.45;
  word-break: break-word;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.subject-task-card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  flex-wrap: wrap;
}

.subject-task-card-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
}

.subject-task-card-badge.type {
  background: rgba(123,109,255,0.15);
  color: #B8ACFF;
}

.subject-task-card-badge.difficulty {
  background: rgba(242,214,75,0.12);
  color: #F2D64B;
}

.subject-task-card-badge.status-draft {
  background: rgba(245,197,66,0.15);
  color: #f5c542;
}

.subject-task-card-badge.status-pending {
  background: rgba(124,110,247,0.15);
  color: #7c6ef7;
}

.subject-task-card-separator {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: rgba(175,194,232,0.3);
  flex-shrink: 0;
}

.subject-task-card-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.subject-task-card-actions .btn {
  border-radius: 999px !important;
  padding: 7px 14px !important;
  font-size: 11px !important;
  font-weight: 700 !important;
  min-height: auto !important;
  width: auto !important;
  transition: all 0.15s;
}

.subject-task-card-actions .btn-view {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  color: #AFC2E8;
}

.subject-task-card-actions .btn-view:active {
  background: rgba(255,255,255,0.1);
  color: #FFFFFF;
}

.subject-task-card-actions .btn-approve {
  background: linear-gradient(135deg, rgba(56,210,122,0.85), rgba(46,186,100,0.85));
  border: none;
  color: #FFFFFF;
  box-shadow: 0 2px 8px rgba(56,210,122,0.25);
}

.subject-task-card-actions .btn-approve:active {
  box-shadow: 0 1px 4px rgba(56,210,122,0.2);
}

.subject-task-card-actions .btn-delete {
  background: rgba(255,107,107,0.12);
  border: 1px solid rgba(255,107,107,0.15);
  color: #FF8A8A;
}

.subject-task-card-actions .btn-delete:active {
  background: rgba(255,107,107,0.2);
  color: #FF6B6B;
}

/* --- Selection checkbox on task card --- */
.subject-task-card .task-select-checkbox {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 2;
}

.subject-task-card .task-select-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: #7B6DFF;
  cursor: pointer;
}

/* --- Empty state --- */
.subject-task-empty-state {
  text-align: center;
  padding: 40px 20px;
  background: rgba(27,47,92,0.4);
  border-radius: 20px;
  border: 1px dashed rgba(255,255,255,0.08);
}

.subject-task-empty-state-icon {
  font-size: 40px;
  margin-bottom: 12px;
  display: block;
  opacity: 0.6;
}

.subject-task-empty-state-title {
  font-size: 14px;
  font-weight: 700;
  color: #AFC2E8;
  margin-bottom: 4px;
}

.subject-task-empty-state-sub {
  font-size: 12px;
  color: rgba(175,194,232,0.5);
}

/* --- Loading state --- */
.subject-task-loading {
  text-align: center;
  padding: 30px 20px;
}

.subject-task-loading .spinner-small {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 3px solid rgba(255,255,255,0.06);
  border-top-color: #7B6DFF;
  animation: spin 0.8s linear infinite;
  margin: 0 auto;
}

/* --- Card list spacing --- */
.subject-task-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ==========================================================================
   DIAGNOSTIC ASSIGN MODAL — Dark Gamified UI (Polished v3 Production)
   ========================================================================== */

/* --- Backdrop — deeper navy environment --- */
#diagnostic-assign-modal {
  position: fixed;
  inset: 0;
  background: rgba(6, 10, 28, 0.90);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  display: none;
  z-index: 1250;
  align-items: center;
  justify-content: center;
  padding: 16px;
  animation: dmBackdropIn 0.25s ease-out;
}

@keyframes dmBackdropIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* --- Modal surface (ModalContainer) — premium depth --- */
.dm-container {
  width: 100%;
  max-width: 520px;
  min-width: 320px;
  max-height: 92vh;
  overflow-y: auto;
  background: linear-gradient(168deg, #1B2F5C 0%, #22376A 100%);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 24px;
  box-shadow:
    0 24px 80px rgba(0, 0, 0, 0.45),
    0 0 0 1px rgba(124, 110, 247, 0.05) inset;
  padding: 24px 24px 24px;
  animation: dmSlideIn 0.28s cubic-bezier(0.22, 1, 0.36, 1);
  scrollbar-width: thin;
  scrollbar-color: rgba(124, 110, 247, 0.22) transparent;
  position: relative;
}

/* Subtle top-edge highlight — inner surface glow */
.dm-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 24px;
  right: 24px;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.10) 50%, transparent 100%);
  pointer-events: none;
}

.dm-container::-webkit-scrollbar {
  width: 6px;
}

.dm-container::-webkit-scrollbar-track {
  background: transparent;
}

.dm-container::-webkit-scrollbar-thumb {
  background: rgba(124, 110, 247, 0.25);
  border-radius: 3px;
}

@keyframes dmSlideIn {
  from { opacity: 0; transform: translateY(16px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* --- Header — cohesive icon box, title, close --- */
.dm-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  gap: 10px;
}

.dm-title-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  min-width: 0;
}

.dm-header-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(124, 110, 247, 0.20) 0%, rgba(157, 143, 255, 0.08) 100%);
  border: 1px solid rgba(124, 110, 247, 0.22);
  font-size: 20px;
  box-shadow: 0 4px 14px rgba(124, 110, 247, 0.10);
  flex-shrink: 0;
  transition: box-shadow 0.2s ease, transform 0.15s ease;
}

.dm-title-text {
  font-size: 20px;
  font-weight: 800;
  color: #FFFFFF;
  letter-spacing: -0.01em;
  line-height: 1.15;
}

/* --- Close button — secondary feel, not disabled --- */
.dm-close-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
  color: #B8C8E4;
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
  flex-shrink: 0;
  transition:
    background 0.18s ease,
    color 0.18s ease,
    border-color 0.18s ease,
    transform 0.12s ease,
    box-shadow 0.18s ease;
}

.dm-close-btn:hover {
  background: rgba(255, 255, 255, 0.10);
  color: #FFFFFF;
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.22);
}

.dm-close-btn:active {
  background: rgba(255, 255, 255, 0.14);
  transform: scale(0.93);
}

.dm-close-btn:focus-visible {
  outline: 2px solid rgba(124, 110, 247, 0.5);
  outline-offset: 2px;
}

.dm-close-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  transform: none;
}

/* --- Description --- */
.dm-description {
  font-size: 13px;
  color: #8FA3C7;
  line-height: 1.55;
  margin: 0 0 20px;
  opacity: 0.85;
}

/* --- Form section --- */
.dm-form-section {
  margin-bottom: 20px;
}

/* --- Label --- */
.dm-label {
  display: block;
  font-size: 11px;
  font-weight: 800;
  color: #8FA3C7;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  margin-bottom: 8px;
}

/* --- Input fields (select, textarea) — unified control family --- */
.dm-input-field {
  width: 100%;
  min-width: 0;
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: #22376A;
  color: #FFFFFF;
  font-size: 14.5px;
  font-family: inherit;
  line-height: 1.45;
  transition:
    border-color 0.18s ease,
    box-shadow 0.18s ease,
    background 0.18s ease;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.15);
}

/* Select: custom arrow, no browser defaults */
select.dm-input-field {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='8' viewBox='0 0 14 8'%3E%3Cpath fill='%23AFC2E8' d='M1.41 0L7 5.59 12.59 0 14 1.41l-7 7-7-7z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 42px;
  cursor: pointer;
}

/* Option styling for browsers that support it */
select.dm-input-field option {
  background: #29427C;
  color: #FFFFFF;
  padding: 8px 12px;
}

select.dm-input-field optgroup {
  background: #243B72;
  color: #AFC2E8;
}

.dm-input-field:hover {
  border-color: rgba(255, 255, 255, 0.14);
  background: #253D73;
}

.dm-input-field:focus {
  outline: none;
  border-color: #7B6DFF;
  box-shadow:
    inset 0 1px 3px rgba(0, 0, 0, 0.12),
    0 0 0 2px rgba(123, 109, 255, 0.35);
  background: #263F78;
}

.dm-input-field:disabled {
  opacity: 0.40;
  cursor: not-allowed;
}

/* ==========================================================================
   CUSTOM DROPDOWN — Dark Gamified UI (for diagnostic modal)
   ========================================================================== */

/* Dropdown container (relative positioning context) */
.dm-custom-dropdown {
  position: relative;
  width: 100%;
}

/* Trigger button — matches .dm-input-field look */
.dm-dropdown-trigger {
  width: 100%;
  min-width: 0;
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: #22376A;
  color: #FFFFFF;
  font-size: 14.5px;
  font-family: inherit;
  line-height: 1.45;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  transition:
    border-color 0.18s ease,
    box-shadow 0.18s ease,
    background 0.18s ease;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.15);
  -webkit-user-select: none;
  user-select: none;
  position: relative;
}

.dm-dropdown-trigger:hover {
  border-color: rgba(255, 255, 255, 0.14);
  background: #253D73;
}

.dm-dropdown-trigger:focus {
  outline: none;
  border-color: #7B6DFF;
  box-shadow:
    inset 0 1px 3px rgba(0, 0, 0, 0.12),
    0 0 0 2px rgba(123, 109, 255, 0.35);
  background: #263F78;
}

.dm-dropdown-trigger:active {
  transform: scale(0.99);
}

.dm-dropdown-trigger.disabled {
  opacity: 0.40;
  cursor: not-allowed;
  pointer-events: none;
}

/* Chevron icon */
.dm-dropdown-trigger::after {
  content: '';
  flex-shrink: 0;
  width: 14px;
  height: 8px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='8' viewBox='0 0 14 8'%3E%3Cpath fill='%23AFC2E8' d='M1.41 0L7 5.59 12.59 0 14 1.41l-7 7-7-7z'/%3E%3C/svg%3E");
  background-size: contain;
  background-repeat: no-repeat;
  transition: transform 0.2s ease;
}

.dm-dropdown-trigger.open::after {
  transform: rotate(180deg);
}

/* Placeholder text color */
.dm-dropdown-trigger .dm-dropdown-trigger-text.placeholder {
  color: #7F93B8;
  opacity: 0.8;
}

.dm-dropdown-trigger .dm-dropdown-trigger-text {
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Dropdown panel (the open list) */
.dm-dropdown-panel {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  z-index: 1300;
  background: #29427C;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  box-shadow:
    0 12px 40px rgba(0, 0, 0, 0.35),
    0 0 0 1px rgba(124, 110, 247, 0.04) inset;
  max-height: 240px;
  overflow-y: auto;
  padding: 6px 0;
  display: none;
  animation: dmDropdownIn 0.18s ease-out;
  scrollbar-width: thin;
  scrollbar-color: rgba(124, 110, 247, 0.22) transparent;
}

.dm-dropdown-panel.open {
  display: block;
}

.dm-dropdown-panel::-webkit-scrollbar {
  width: 5px;
}

.dm-dropdown-panel::-webkit-scrollbar-track {
  background: transparent;
}

.dm-dropdown-panel::-webkit-scrollbar-thumb {
  background: rgba(124, 110, 247, 0.25);
  border-radius: 3px;
}

@keyframes dmDropdownIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Dropdown option row */
.dm-dropdown-option {
  padding: 10px 16px;
  font-size: 14.5px;
  color: #FFFFFF;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  -webkit-user-select: none;
  user-select: none;
}

.dm-dropdown-option:hover {
  background: rgba(124, 110, 247, 0.12);
  color: #FFFFFF;
}

.dm-dropdown-option:active {
  background: rgba(124, 110, 247, 0.20);
}

/* Selected state — purple-tinted highlight */
.dm-dropdown-option.selected {
  background: rgba(124, 110, 247, 0.18);
  color: #c4b5fd;
  font-weight: 600;
}

/* Disabled/empty state */
.dm-dropdown-option.disabled {
  color: #7F93B8;
  cursor: not-allowed;
  opacity: 0.6;
  pointer-events: none;
}

/* Textarea — enhanced depth */
textarea.dm-input-field {
  resize: vertical;
  min-height: 100px;
  line-height: 1.5;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.18);
}

textarea.dm-input-field.dm-textarea-field {
  padding: 16px 14px;
}

.dm-input-field::placeholder {
  color: #7F93B8;
  opacity: 0.8;
}

/* --- Help text --- */
.dm-help-text {
  font-size: 11.5px;
  color: #7F93B8;
  line-height: 1.5;
  margin: 7px 0 0;
  opacity: 0.75;
}

/* --- Info card — distinct but integrated --- */
.dm-info-card {
  background: rgba(36, 59, 114, 0.70);
  border: 1px solid rgba(124, 110, 247, 0.12);
  border-radius: 18px;
  padding: 14px 16px 14px 18px;
  margin-bottom: 20px;
  position: relative;
  transition: background 0.2s ease, box-shadow 0.2s ease;
  overflow: hidden;
  backdrop-filter: blur(4px);
}

/* --- Diagnostic Skills Section (Enlarged) --- */
#diagnostic-skills-list {
  max-height: 600px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(124, 110, 247, 0.22) transparent;
}

#diagnostic-skills-list::-webkit-scrollbar {
  width: 6px;
}

#diagnostic-skills-list::-webkit-scrollbar-track {
  background: transparent;
}

#diagnostic-skills-list::-webkit-scrollbar-thumb {
  background: rgba(124, 110, 247, 0.25);
  border-radius: 3px;
}

@media (max-width: 768px) {
  #diagnostic-skills-list {
    max-height: 50vh;
  }
}

/* Skill selection counter and controls */
.skill-selection-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
  padding: 10px 12px;
  background: rgba(124, 110, 247, 0.08);
  border: 1px solid rgba(124, 110, 247, 0.18);
  border-radius: 12px;
}

.skill-selection-counter {
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
}

.skill-selection-buttons {
  display: flex;
  gap: 8px;
}

/* Left accent line */
.dm-info-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 3px;
  border-radius: 2px;
  background: linear-gradient(180deg, rgba(124, 110, 247, 0.50) 0%, rgba(124, 110, 247, 0.20) 100%);
}

.dm-info-card:hover {
  background: rgba(39, 64, 122, 0.80);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.18);
}

.dm-info-card-title {
  font-size: 12.5px;
  font-weight: 800;
  color: var(--purple2);
  text-transform: uppercase;
  letter-spacing: 0.4px;
  margin-bottom: 6px;
  padding-left: 8px;
}

.dm-info-card-text {
  font-size: 12.5px;
  color: #AFC2E8;
  line-height: 1.6;
  margin: 0;
  padding-left: 8px;
}

/* --- Actions --- */
.dm-actions {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  gap: 10px;
  margin-top: 8px;
}

.dm-btn {
  flex: 1;
  min-height: 48px;
  padding: 12px 18px;
  font-size: 14.5px;
  font-weight: 700;
  font-family: inherit;
  border-radius: 16px;
  border: none;
  cursor: pointer;
  transition:
    transform 0.12s ease,
    box-shadow 0.2s ease,
    opacity 0.2s ease,
    background 0.2s ease;
}

.dm-btn:focus-visible {
  outline: 2px solid rgba(124, 110, 247, 0.5);
  outline-offset: 2px;
}

/* Secondary (Отмена) — confident secondary */
.dm-btn-secondary {
  background: rgba(255, 255, 255, 0.07);
  color: #D0DAED;
  border: 1px solid rgba(255, 255, 255, 0.10);
}

.dm-btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #FFFFFF;
  border-color: rgba(255, 255, 255, 0.14);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.18);
}

.dm-btn-secondary:active {
  transform: scale(0.97);
  background: rgba(255, 255, 255, 0.14);
}

/* Primary (Назначить) — green with soft glow */
.dm-btn-primary {
  background: linear-gradient(135deg, #38D27A 0%, #2DB866 100%);
  color: #FFFFFF;
  box-shadow: 0 4px 18px rgba(56, 210, 122, 0.25), 0 0 0 1px rgba(56, 210, 122, 0.15) inset;
}

.dm-btn-primary:hover {
  background: linear-gradient(135deg, #42DB86 0%, #34C86E 100%);
  box-shadow: 0 6px 24px rgba(56, 210, 122, 0.32), 0 0 0 1px rgba(56, 210, 122, 0.18) inset;
}

.dm-btn-primary:active {
  transform: scale(0.97);
  box-shadow: 0 2px 10px rgba(56, 210, 122, 0.18);
}

.dm-btn:disabled {
  opacity: 0.40;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* --- Progress --- */
.dm-progress {
  margin-top: 16px;
  padding: 10px 14px;
  font-size: 12.5px;
  color: #AFC2E8;
  line-height: 1.5;
  display: none;
  background: rgba(124, 110, 247, 0.08);
  border-radius: 14px;
  border: 1px solid rgba(124, 110, 247, 0.12);
  animation: dmPulse 2s ease-in-out infinite;
}

@keyframes dmPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* --- Mobile responsive --- */
@media (max-width: 480px) {
  #diagnostic-assign-modal {
    padding: 8px;
    align-items: flex-end;
  }

  .dm-container {
    max-width: 100%;
    max-height: 95vh;
    border-radius: 22px 22px 0 0;
    padding: 20px 16px 16px;
  }

  .dm-container::before {
    left: 16px;
    right: 16px;
  }

  .dm-header-icon {
    width: 38px;
    height: 38px;
    font-size: 18px;
  }

  .dm-title-text {
    font-size: 18px;
  }

  .dm-actions {
    flex-direction: column;
    flex-wrap: wrap;
    gap: 8px;
  }

  .dm-btn {
    min-height: 50px;
  }
}

@media (max-width: 360px) {
  .dm-container {
    padding: 16px 12px 14px;
  }

  .dm-container::before {
    left: 12px;
    right: 12px;
  }

  .dm-title-text {
    font-size: 17px;
  }

  .dm-header-icon {
    width: 34px;
    height: 34px;
    font-size: 16px;
    border-radius: 12px;
  }
}

/* ==========================================================================
   QUICK TASK SCREEN — Premium Dark Gamified UI (task-028)
   ========================================================================== */

/* Quick task screen shell */
#screen-quick-task {
  background: linear-gradient(180deg, #0F1E3D 0%, #14254B 100%);
}

/* Quick task header title override */
#screen-quick-task .header-title {
  font-size: 22px;
  font-weight: 700;
  color: #FFFFFF;
}

/* Quick task back button */
#screen-quick-task .back-btn {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #D7E2F4;
}
#screen-quick-task .back-btn:hover {
  background: rgba(255, 255, 255, 0.10);
}
#screen-quick-task .back-btn:active {
  transform: scale(0.96);
}

/* Quick task segmented control tabs */
.qt-segmented-control {
  display: flex;
  gap: 0;
  background: #1B2F5C;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 18px;
  padding: 6px;
  margin: 12px 20px 0;
}
.qt-segment {
  flex: 1;
  padding: 10px 16px;
  border-radius: 14px;
  border: none;
  background: transparent;
  color: #AFC2E8;
  font-family: 'Nunito', sans-serif;
  font-weight: 800;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  text-align: center;
}
.qt-segment:hover {
  background: rgba(255, 255, 255, 0.04);
  color: #FFFFFF;
}
.qt-segment.active {
  background: linear-gradient(135deg, #38D27A 0%, #2FBF68 100%);
  color: #FFFFFF;
  box-shadow: 0 6px 18px rgba(56, 210, 122, 0.25);
}
.qt-segment:active {
  transform: scale(0.97);
}

/* Quick task tab content */
.qt-tab-content {
  padding: 20px;
  display: none;
  flex-direction: column;
  gap: 14px;
  flex: 1;
  overflow-y: auto;
}
.qt-tab-content.active {
  display: flex;
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

/* Quick task info blocks */
.qt-info-block {
  border-radius: 16px;
  padding: 14px;
  font-size: 14px;
  line-height: 1.5;
}
.qt-info-block.qt-info-green {
  background: rgba(56, 210, 122, 0.10);
  border: 1px solid rgba(56, 210, 122, 0.25);
  color: #BFEFD5;
}
.qt-info-block.qt-info-purple {
  background: rgba(124, 110, 247, 0.08);
  border: 1px solid rgba(124, 110, 247, 0.2);
  color: #AFC2E8;
}
.qt-info-block.qt-info-subtle {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #AFC2E8;
  font-size: 13px;
}

/* Unified input system */
.qt-input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 18px;
}
.qt-label {
  font-size: 12px;
  font-weight: 700;
  color: #8FA3C7;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.qt-input,
.qt-select,
.qt-textarea {
  background: #22376A;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 14px 16px;
  color: #FFFFFF;
  font-family: 'Nunito', sans-serif;
  font-size: 16px;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  width: 100%;
}
.qt-input::placeholder,
.qt-textarea::placeholder {
  color: #7F93B8;
}
.qt-input:hover,
.qt-select:hover,
.qt-textarea:hover {
  border-color: rgba(255, 255, 255, 0.14);
}
.qt-input:focus,
.qt-select:focus,
.qt-textarea:focus {
  border-color: #7B6DFF;
  box-shadow: 0 0 0 2px rgba(123, 109, 255, 0.30);
}

/* Textarea specifics */
.qt-textarea {
  min-height: 120px;
  line-height: 1.5;
  resize: vertical;
}
.qt-textarea.qt-textarea-explanation {
  min-height: 110px;
}

/* Select custom styling */
.qt-select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238FA3C7' d='M6 8.825a.5.5 0 0 1-.354-.146l-4-4a.5.5 0 1 1 .708-.708L6 7.617l3.646-3.646a.5.5 0 1 1 .708.708l-4 4A.5.5 0 0 1 6 8.825z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}
.qt-select option {
  background: #29427C;
  color: #FFFFFF;
  padding: 8px 12px;
}
.qt-select option:checked {
  background: rgba(123, 109, 255, 0.20);
}
.qt-select option:hover {
  background: rgba(255, 255, 255, 0.06);
}

/* Quick task options block (answer variants) */
.qt-options-block {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 18px;
}

/* AI helper buttons */
.qt-ai-helper-btn {
  height: 40px;
  padding: 0 14px;
  border-radius: 14px;
  border: none;
  background: linear-gradient(135deg, #6B63F6 0%, #7A7BFF 100%);
  color: #FFFFFF;
  font-family: 'Nunito', sans-serif;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  box-shadow: 0 4px 12px rgba(123, 109, 255, 0.22);
  white-space: nowrap;
}
.qt-ai-helper-btn:hover {
  background: linear-gradient(135deg, #756BFF 0%, #8486FF 100%);
  box-shadow: 0 6px 16px rgba(123, 109, 255, 0.28);
}
.qt-ai-helper-btn:active {
  transform: scale(0.96);
}

/* AI helper row layout */
.qt-ai-helper-row {
  display: flex;
  gap: 8px;
  align-items: center;
}
.qt-ai-helper-row.qt-ai-helper-row-textarea {
  align-items: flex-start;
}
.qt-ai-helper-row .qt-input,
.qt-ai-helper-row .qt-textarea {
  flex: 1;
}

/* Primary save button */
.qt-save-btn {
  width: 100%;
  height: 52px;
  border-radius: 18px;
  border: none;
  background: linear-gradient(135deg, #38D27A 0%, #2FBF68 100%);
  color: #FFFFFF;
  font-family: 'Nunito', sans-serif;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 8px 24px rgba(56, 210, 122, 0.28);
  margin-top: 22px;
}
.qt-save-btn:hover {
  background: linear-gradient(135deg, #42DA82 0%, #35C56F 100%);
  box-shadow: 0 10px 28px rgba(56, 210, 122, 0.34);
  transform: translateY(-1px);
}
.qt-save-btn:active {
  transform: scale(0.97);
}

/* Bottom info block spacing */
.qt-bottom-info {
  margin-top: 14px;
}

/* Legacy class mapping for backward compatibility */
.input-group.qt-input-group {
  /* Uses qt-input-group styles */
}
.input-field.qt-input,
.input-field.qt-select,
.input-field.qt-textarea {
  /* Uses unified qt-input/qt-select/qt-textarea styles */
}
.btn.qt-save-btn {
  /* Uses qt-save-btn styles */
}
.btn.qt-ai-helper-btn {
  /* Uses qt-ai-helper-btn styles */
}

/* AI tab card styling */
.qt-ai-card {
  background: linear-gradient(135deg, rgba(124, 110, 247, 0.15), rgba(78, 203, 113, 0.1));
  border-radius: 16px;
  padding: 16px;
  border: 1px solid rgba(124, 110, 247, 0.2);
}
.qt-ai-card-title {
  font-size: 15px;
  font-weight: 800;
  margin-bottom: 8px;
  color: #FFFFFF;
}
.qt-ai-card-desc {
  font-size: 13px;
  color: #AFC2E8;
  line-height: 1.5;
}

/* AI batch preview styling */
.qt-ai-batch-preview {
  display: none;
  flex-direction: column;
  gap: 12px;
}
.qt-ai-batch-preview.active {
  display: flex;
}
.qt-ai-batch-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.qt-ai-batch-count {
  font-size: 14px;
  font-weight: 800;
  color: var(--purple2);
}

/* Quick task screen spacing utilities */
.qt-spacing-section {
  margin-bottom: 18px;
}
.qt-spacing-before-save {
  margin-top: 22px;
}

/* AI Dialog Mode Styles (task-032) */
.qt-ai-dialog-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.qt-ai-dialog-step-chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  background: rgba(78,203,113,0.15);
  color: var(--green);
  border: 1px solid rgba(78,203,113,0.25);
}

.qt-ai-dialog-log {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px;
  background: rgba(15,30,61,0.6);
  border: 1px solid var(--border);
  border-radius: 16px;
  min-height: 200px;
  max-height: 400px;
  overflow-y: auto;
}

.qt-ai-dialog-summary {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.qt-ai-summary-card,
.qt-ai-explanation-card {
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--border);
}

.qt-ai-summary-card {
  background: rgba(124,110,247,0.08);
  border-color: rgba(124,110,247,0.20);
}

.qt-ai-explanation-card {
  background: rgba(78,203,113,0.08);
  border-color: rgba(78,203,113,0.20);
}

.qt-ai-summary-title,
.qt-ai-explanation-title {
  font-size: 13px;
  font-weight: 800;
  margin-bottom: 10px;
  color: var(--text);
}

.qt-ai-dialog-input-row {
  display: flex;
  gap: 8px;
  align-items: stretch;
}

.qt-ai-dialog-input {
  flex: 1;
  background: var(--card2);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px 16px;
  color: var(--text);
  font-family: 'Nunito', sans-serif;
  font-size: 15px;
  outline: none;
  transition: all var(--transition);
}

.qt-ai-dialog-input::placeholder {
  color: var(--muted-subtle);
}

.qt-ai-dialog-input:hover {
  border-color: var(--border-strong);
}

.qt-ai-dialog-input:focus {
  border-color: var(--purple);
  box-shadow: var(--focus-ring);
}

.qt-ai-dialog-send {
  min-width: 48px;
  padding: 0 16px;
  border-radius: 14px;
  font-size: 18px;
}

/* ==========================================================================
   VISUAL UNIFICATION PASS — task-031
   Unified dark gamified design system utilities and missing components
   ========================================================================== */

/* ---- Layout Utilities ---- */
.is-hidden { display: none !important; }
.vstack-sm { display: flex; flex-direction: column; gap: 8px; }
.vstack-md { display: flex; flex-direction: column; gap: 12px; }
.vstack-lg { display: flex; flex-direction: column; gap: 16px; }
.btn-row { display: flex; gap: 8px; }
.btn-row-sm { display: flex; gap: 8px; margin-top: 12px; }
.btn-row-sm .btn { flex: 1; }
.row-2col { display: flex; gap: 12px; }
.row-2col > * { flex: 1; }
.toolbar-end { display: flex; justify-content: flex-end; margin-bottom: 6px; }
.card-header-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 10px; }
.scroll-content { padding: 20px; display: flex; flex-direction: column; gap: 16px; flex: 1; overflow-y: auto; }
.meta-row { margin-top: 10px; font-size: 12px; color: var(--muted); display: flex; gap: 10px; flex-wrap: wrap; }
.stats-row-center { display: flex; justify-content: center; gap: 24px; margin-top: 16px; }
.filter-bar { padding: 16px 20px 8px; display: flex; gap: 8px; flex-wrap: wrap; }

/* Grid utilities */
.grid-4col { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; }
.grid-3col { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; }
.grid-2col-asym { display: grid; grid-template-columns: 1.2fr 1fr; gap: 12px; }
.grid-filters { display: grid; grid-template-columns: 1.2fr 1.2fr 1fr auto; gap: 10px; align-items: center; }

/* Modal system — unified backdrop and dialog */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.modal-dialog {
  background: linear-gradient(180deg, #1B2F5C 0%, #22376A 100%);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 24px;
  padding: 24px;
  box-shadow: 0 24px 80px rgba(0,0,0,0.45);
  animation: modalIn 0.2s ease;
  width: 100%;
  max-width: 420px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
}
.modal-dialog.modal-lg { max-width: 520px; }
.modal-header-row {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  margin-bottom: 16px;
}
.modal-title {
  font-family: 'Fredoka One', cursive; font-size: 18px; color: var(--text);
}
.modal-body {
  padding: 20px; display: flex; flex-direction: column; gap: 14px; flex: 1; overflow-y: auto;
}
.modal-close-btn {
  width: 44px; height: 44px; border-radius: 14px;
  background: rgba(255,255,255,0.06); border: 1px solid var(--border);
  cursor: pointer; color: var(--text); font-size: 18px;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
}
.modal-close-btn:hover { background: rgba(255,255,255,0.10); border-color: var(--border-strong); }
.modal-close-btn:active { transform: scale(0.97); }

/* Task Edit Modal specific styles (uses modal-backdrop + modal-dialog) */
.task-edit-options { display: flex; flex-direction: column; gap: 8px; }

/* Help / Info cards */
.help-card, .info-banner {
  padding: 16px;
  background: rgba(123,109,255,0.10);
  border: 1px solid var(--border);
  border-radius: 16px;
  margin: 16px;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.5;
}
.help-card { color: var(--muted); }
.info-banner { color: var(--muted); }
.danger-info-box {
  background: rgba(255,107,107,0.10);
  border: 1px solid rgba(255,107,107,0.30);
  border-radius: 16px;
  padding: 16px;
  color: var(--coral);
  font-size: 14px;
  line-height: 1.5;
}

/* Gradient cards — tokenized */
.invite-card {
  background: linear-gradient(135deg, rgba(123,109,255,0.15), rgba(56,210,122,0.10));
}
.onboarding-card {
  background: linear-gradient(135deg, rgba(123,109,255,0.18), rgba(109,183,255,0.12));
}
.exam-card, .waiting-card {
  background: linear-gradient(135deg, rgba(123,109,255,0.16), rgba(109,183,255,0.12));
}
.skill-info-card {
  background: linear-gradient(135deg, rgba(242,214,75,0.15), rgba(123,109,255,0.15));
}
.info-card-blue-purple {
  background: linear-gradient(135deg, rgba(109,183,255,0.12), rgba(123,109,255,0.08));
}

/* ---- Progress bar track consistency fix ---- */
/* Use var(--bg2) everywhere for progress track background */
.progress-bar { background: var(--bg2); }

/* ---- Student Home: Quick Action Buttons ---- */
.home-actions {
  display: flex; flex-wrap: wrap; gap: 10px; justify-content: center;
}
.quick-action-btn {
  flex: 1; min-width: 80px;
  padding: 14px 12px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--card2);
  color: var(--text);
  font-family: 'Nunito', sans-serif;
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 4px;
}
.quick-action-btn:hover { background: var(--card-hover); border-color: var(--border-strong); }
.quick-action-btn:active { transform: scale(0.97); }
.quick-action-btn .qa-icon { font-size: 22px; }
.quick-action-btn .qa-label { font-size: 12px; font-weight: 700; }

/* Compatibility: daily-task-btn + quick-action-btn modifier */
.daily-task-btn.quick-action-btn {
  /* Inherits daily-task-btn base, overrides with quick-action-btn styles */
}

.quick-action-btn.plan {
  background: linear-gradient(135deg, rgba(56,210,122,0.18), rgba(123,109,255,0.18));
  border-color: rgba(56,210,122,0.20);
}
.quick-action-btn.plan:hover { border-color: rgba(56,210,122,0.30); }

.quick-action-btn.map {
  background: linear-gradient(135deg, rgba(242,214,75,0.18), rgba(123,109,255,0.18));
  border-color: rgba(242,214,75,0.20);
}
.quick-action-btn.map:hover { border-color: rgba(242,214,75,0.30); }

.quick-action-btn.schedule {
  background: linear-gradient(135deg, rgba(109,183,255,0.18), rgba(123,109,255,0.18));
  border-color: rgba(109,183,255,0.20);
}
.quick-action-btn.schedule:hover { border-color: rgba(109,183,255,0.30); }

.quick-action-btn.stats {
  background: linear-gradient(135deg, rgba(56,210,122,0.18), rgba(123,109,255,0.18));
  border-color: rgba(56,210,122,0.20);
}
.quick-action-btn.stats:hover { border-color: rgba(56,210,122,0.30); }

.quick-action-btn.achievements {
  background: linear-gradient(135deg, rgba(242,214,75,0.18), rgba(123,109,255,0.18));
  border-color: rgba(242,214,75,0.20);
}
.quick-action-btn.achievements:hover { border-color: rgba(242,214,75,0.30); }

/* ---- Card title small ---- */
.card-title-sm {
  font-size: 16px; font-weight: 900; margin-bottom: 6px; color: var(--text);
}
.preview-heading {
  font-size: 14px; font-weight: 800; margin-bottom: 12px; color: var(--purple);
}

/* ---- Admin Panel Styles ---- */
.admin-header-bar {
  padding: 14px 20px;
  background: linear-gradient(135deg, rgba(242,214,75,0.12), rgba(255,107,107,0.08));
  border-bottom: 1px solid rgba(242,214,75,0.20);
}
.admin-title-gradient {
  font-family: 'Fredoka One', cursive; font-size: 20px;
  background: linear-gradient(135deg, var(--gold), var(--coral));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.admin-tab-bar {
  display: flex; border-bottom: 1px solid var(--border);
  overflow-x: auto; background: var(--bg2); flex-shrink: 0;
}
.admin-tab-btn {
  padding: 11px 14px; font-size: 11px; font-weight: 800;
  color: var(--muted); cursor: pointer; white-space: nowrap;
  border-bottom: 3px solid transparent; flex-shrink: 0;
  text-transform: uppercase; letter-spacing: 0.3px;
  transition: all var(--transition);
}
.admin-tab-btn:hover { color: var(--text); background: rgba(255,255,255,0.03); }
.admin-tab-btn.active {
  color: var(--gold); border-bottom-color: var(--gold);
}

/* Provider icon backgrounds (brand colors as CSS classes) */
.provider-icon-claude { background: linear-gradient(135deg, #cc785c, #d4956a); }
.provider-icon-deepseek { background: linear-gradient(135deg, #1a73e8, #0052cc); }
.provider-icon-openai { background: linear-gradient(135deg, #10a37f, #1a7f64); }
.provider-icon-gemini { background: linear-gradient(135deg, #4285f4, #ea4335, #fbbc05, #34a853); }
.provider-icon-gemini-solid { background: linear-gradient(135deg, #4285f4, #1a57c4); }

.provider-icon-box {
  width: 42px; height: 42px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; color: #fff; flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

/* Model chips */
.model-chip {
  padding: 4px 10px; border-radius: 20px; font-size: 12px; font-weight: 700;
  background: rgba(255,255,255,0.06); color: var(--muted);
  border: 1px solid var(--border); cursor: pointer;
  transition: all var(--transition);
}
.model-chip:hover { background: rgba(255,255,255,0.10); border-color: var(--border-strong); }
.model-chip-selected {
  padding: 4px 10px; border-radius: 20px; font-size: 12px; font-weight: 700;
  background: rgba(123,109,255,0.20); color: var(--purple2);
  border: 1px solid var(--purple); cursor: pointer;
  transition: all var(--transition);
}
.model-chip-selected:hover { background: rgba(123,109,255,0.28); }

/* Danger zone */
.danger-zone-card {
  background: rgba(255,107,107,0.08);
  border: 1px solid rgba(255,107,107,0.30);
  border-radius: 18px;
  padding: 16px;
}
.btn-danger-outline {
  background: rgba(255,107,107,0.15);
  border: 1px solid rgba(255,107,107,0.40);
  color: var(--coral);
}
.btn-danger-outline:hover { background: rgba(255,107,107,0.20); border-color: rgba(255,107,107,0.50); }

/* Provider save button */
.provider-save-btn {
  padding: 10px 14px; border-radius: 10px;
  border: none; color: #fff;
  font-family: 'Nunito', sans-serif; font-size: 14px; font-weight: 800;
  cursor: pointer; transition: all var(--transition);
}

/* ---- PIN Pad (Admin Login) ---- */
.pin-dots-row { display: flex; gap: 14px; justify-content: center; }
.pin-dot {
  width: 14px; height: 14px; border-radius: 50%;
  background: rgba(255,255,255,0.10); border: 1px solid var(--border);
  transition: all var(--transition);
}
.pin-dot.filled { background: var(--gold); border-color: var(--gold); }
.pin-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
  width: 100%; max-width: 260px;
}
.pin-btn {
  aspect-ratio: 1; border-radius: 16px;
  background: var(--card); border: 1px solid var(--border);
  font-family: 'Fredoka One', cursive; font-size: 26px; color: var(--text);
  cursor: pointer; transition: all var(--transition);
  display: flex; align-items: center; justify-content: center;
}
.pin-btn:hover { background: var(--card-hover); border-color: var(--border-strong); }
.pin-btn:active { transform: scale(0.95); }
.pin-btn:focus-visible { box-shadow: var(--focus-ring); }
.pin-submit-btn {
  border-radius: 16px; border: none;
  font-family: 'Nunito', sans-serif; font-size: 20px; font-weight: 900;
  cursor: pointer; transition: all var(--transition);
  background: linear-gradient(135deg, var(--gold), #d4b830);
  color: #0F1E3D;
}
.pin-submit-btn:hover { box-shadow: 0 6px 16px rgba(242,214,75,0.25); }
.pin-submit-btn:active { transform: scale(0.97); }
.link-btn {
  background: none; border: none; color: var(--muted);
  font-family: 'Nunito', sans-serif; font-size: 14px; font-weight: 700;
  cursor: pointer; padding: 8px; transition: all var(--transition);
}
.link-btn:hover { color: var(--text); }

/* ---- Onboarding ---- */
.onboarding-title {
  font-size: 20px; font-family: 'Fredoka One', cursive;
  color: var(--purple2); margin-bottom: 8px;
}
.onboarding-progress-track {
  margin-top: 14px; height: 10px;
  background: var(--bg2); border-radius: 99px; overflow: hidden;
}
.onboarding-progress-fill {
  height: 100%; border-radius: 99px;
  background: linear-gradient(90deg, var(--purple), var(--blue));
  transition: width 0.4s ease;
}

/* ---- Student home stat items ---- */
.home-stat-item { text-align: center; }
.home-stat-num { font-size: 24px; font-weight: 900; line-height: 1.1; }
.home-stat-label { font-size: 12px; color: var(--muted); margin-top: 2px; font-weight: 700; }

/* ==========================================================================
   FIX: Learning Plan backgrounds — replace #090817/#070611 with system tokens
   ========================================================================== */
#screen-learning-plan[data-plan-mode="student"] {
  background: var(--bg-gradient) !important;
}
#screen-learning-plan[data-plan-mode="student"] .learning-plan-student-bg {
  background: var(--bg-gradient) !important;
}
#screen-learning-plan[data-plan-mode="tutor"] {
  background: var(--bg-gradient) !important;
}
/* Override any leftover deep-nave overrides */
.learning-plan-student-bg,
[data-plan-mode="student"] .card,
[data-plan-mode="student"] .section-title,
[data-plan-mode="tutor"] .card {
  /* Let inherited card / section-title styles do the work; no special bg */
}

/* ==========================================================================
   FIX: Parent header — use var(--blue) instead of rgba(79,195,247,0.15)
   ========================================================================== */
.parent-header {
  background: linear-gradient(180deg, rgba(109,183,255,0.15) 0%, transparent 100%);
}

/* ==========================================================================
   Responsive adjustments
   ========================================================================== */
/* Responsive adjustments */
@media (max-width: 360px) {
  .qt-segmented-control {
    margin: 12px 16px 0;
  }
  .qt-tab-content {
    padding: 16px;
  }
  .qt-save-btn {
    height: 48px;
    font-size: 15px;
  }
}