/* ============================================================
   StudyTask v2.0 – style.css
   ============================================================ */

:root {
  --primary:    #4e73df;
  --success:    #1cc88a;
  --info:       #36b9cc;
  --warning:    #f6c23e;
  --danger:     #e74a3b;
  --bg:         #f8f9fc;
  --card-bg:    #ffffff;
  --text:       #333333;
  --text-muted: #858796;
  --border:     rgba(0,0,0,0.08);
  --radius:     12px;
  --transition: 0.2s ease;
  --font-base:  15px;
}

/* ─── Base ─── */
body {
  background-color: var(--bg);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-size: var(--font-base);
  color: var(--text);
  transition: background-color 0.3s, color 0.3s;
}

/* ─── Login ─── */
.login-page {
  background: linear-gradient(135deg, #4e73df 0%, #224abe 55%, #1cc88a 100%);
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  padding: 16px;
}
.login-card {
  width: 100%; max-width: 420px;
  border-radius: 20px !important; border: none !important;
}
.app-logo {
  width: 72px; height: 72px;
  background: linear-gradient(135deg, var(--primary), #224abe);
  border-radius: 20px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 2rem; color: #fff;
  box-shadow: 0 8px 24px rgba(78,115,223,.4);
}
.demo-info {
  border-radius: 10px;
  border: 1px dashed rgba(13,110,253,.4) !important;
  background: rgba(13,110,253,.05) !important;
  font-size: .85rem;
}

/* ─── Navbar ─── */
.navbar { box-shadow: 0 2px 12px rgba(0,0,0,.18); transition: background-color 0.3s; }
.navbar .nav-link {
  color: rgba(255,255,255,.8) !important;
  border-radius: 8px; padding: 6px 14px !important;
  text-decoration: none; transition: all var(--transition);
  background: transparent; border: none; cursor: pointer;
}
.navbar .nav-link:hover, .navbar .nav-link.active {
  color: #fff !important; background: rgba(255,255,255,.15);
}
.nav-avatar {
  width: 34px; height: 34px; border-radius: 50%;
  overflow: hidden; border: 2px solid rgba(255,255,255,.5);
  flex-shrink: 0;
}
.nav-avatar-initials {
  width: 100%; height: 100%;
  background: rgba(255,255,255,.25);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.7rem; font-weight: 700; color: white;
}

/* ─── Main content ─── */
.main-content { min-height: calc(100vh - 60px); padding-bottom: 72px; }

/* ─── Stat Cards ─── */
.stat-card { border-radius: var(--radius) !important; transition: transform var(--transition), box-shadow var(--transition); overflow: hidden; }
.stat-card:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,.1) !important; }
.stat-label { font-size: .75rem; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; color: var(--text-muted); margin-bottom: 4px; }
.stat-value { font-size: 2rem; font-weight: 700; line-height: 1; }
.stat-icon { width: 52px; height: 52px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 1.4rem; flex-shrink: 0; }
.bg-primary-light { background: rgba(78,115,223,.12); }
.bg-success-light  { background: rgba(28,200,138,.12); }
.bg-info-light     { background: rgba(54,185,204,.12); }
.bg-danger-light   { background: rgba(231,74,59,.12);  }

/* ─── Cards ─── */
.card {
  border-radius: var(--radius) !important;
  border: 1px solid var(--border) !important;
  background-color: var(--card-bg);
  transition: background-color 0.3s;
}

/* ─── Subject Cards ─── */
.subject-card { transition: transform var(--transition), box-shadow var(--transition); }
.subject-card:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,.1) !important; }
.subject-color-dot { width: 46px; height: 46px; border-radius: 12px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }

/* ─── Deadline Items ─── */
.deadline-item { transition: box-shadow var(--transition); border-radius: var(--radius) !important; }
.deadline-item:hover { box-shadow: 0 4px 16px rgba(0,0,0,.1) !important; }
.subject-dot { width: 12px; height: 12px; border-radius: 50%; flex-shrink: 0; margin-top: 5px; }

/* ─── Color Picker ─── */
.color-btn { width: 34px; height: 34px; border-radius: 50%; border: 3px solid transparent; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; transition: transform var(--transition), border-color var(--transition); flex-shrink: 0; }
.color-btn:hover { transform: scale(1.15); }
.color-btn.selected { border-color: #222; transform: scale(1.15); }

/* ─── Modal ─── */
.modal { z-index: 1055; }
.modal-content { border-radius: 16px !important; border: none !important; box-shadow: 0 20px 60px rgba(0,0,0,.2); background-color: var(--card-bg); }
.modal-header { border-bottom: 1px solid var(--border); padding: 1.25rem 1.5rem; }
.modal-footer { border-top: 1px solid var(--border); }

/* ─── Buttons ─── */
.btn { border-radius: 8px; font-weight: 500; transition: all var(--transition); }
.btn-primary { background-color: var(--primary) !important; border-color: var(--primary) !important; color: #fff !important; }
.btn-primary:hover { filter: brightness(0.9); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(78,115,223,.35); }
.btn-primary:disabled { filter: none; transform: none; box-shadow: none; opacity: 0.65; }
.btn-outline-primary { color: var(--primary) !important; border-color: var(--primary) !important; }
.btn-outline-primary:hover { background-color: var(--primary) !important; color: #fff !important; }

/* ─── Form controls ─── */
.form-control, .form-select { border-radius: 8px; border-color: #d1d3e2; transition: border-color var(--transition), box-shadow var(--transition); background-color: var(--card-bg); color: var(--text); }
.form-control:focus, .form-select:focus { border-color: var(--primary); box-shadow: 0 0 0 .2rem rgba(78,115,223,.2); }

/* ─── Badges ─── */
.badge { border-radius: 6px; font-weight: 600; font-size: .72rem; }

/* ─── Progress ─── */
.progress { border-radius: 100px; background: #eaecf4; }
.progress-bar { border-radius: 100px; }

/* ─── List Group ─── */
.list-group-item { background-color: var(--card-bg); color: var(--text); }
.list-group-item:hover { background: rgba(78,115,223,.04); }

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #c4c9d4; border-radius: 3px; }

/* ─────────────────────────────────────────────────────
   PROFILE (Hồ sơ sinh viên)
───────────────────────────────────────────────────── */
.profile-avatar-circle {
  width: 96px; height: 96px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #224abe);
  display: flex; align-items: center; justify-content: center;
  font-size: 2.2rem; font-weight: 700; color: #fff;
  border: 4px solid rgba(78,115,223,.25);
  box-shadow: 0 4px 16px rgba(78,115,223,.3);
}
.profile-field { margin-bottom: 4px; }
.profile-field-label {
  font-size: 0.7rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--text-muted);
  display: flex; align-items: center; gap: 4px; margin-bottom: 4px;
}
.profile-field-value {
  font-size: 0.92rem; color: var(--text);
  padding: 6px 0; border-bottom: 1px solid var(--border);
}
.profile-storage-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px; border-radius: 20px;
  background: rgba(28,200,138,.1); color: #1cc88a;
  font-size: 0.75rem; font-weight: 600;
}

/* ─────────────────────────────────────────────────────
   LIBRARY (Thư viện liên kết)
───────────────────────────────────────────────────── */
.lib-tabs {
  display: flex; flex-wrap: wrap; gap: 8px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--border);
}
.lib-tab {
  padding: 6px 14px; border-radius: 20px; border: none;
  background: rgba(0,0,0,.05); color: var(--text-muted);
  font-size: 0.82rem; font-weight: 600;
  cursor: pointer; transition: all 0.2s;
  display: inline-flex; align-items: center; gap: 5px;
}
.lib-tab:hover { background: rgba(0,0,0,.1); color: var(--text); }
.lib-tab.active { background: var(--primary); color: #fff; }
.lib-tab-count {
  background: rgba(255,255,255,.25); border-radius: 10px;
  padding: 1px 7px; font-size: 0.72rem; margin-left: 2px;
}
.lib-tab:not(.active) .lib-tab-count { background: rgba(0,0,0,.1); color: var(--text-muted); }

.lib-card { transition: transform 0.2s, box-shadow 0.2s; border-radius: var(--radius) !important; }
.lib-card:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,.1) !important; }
.lib-icon { width: 46px; height: 46px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 1.3rem; flex-shrink: 0; }
.lib-cat-badge { display: inline-flex; align-items: center; gap: 4px; padding: 3px 10px; border-radius: 20px; font-size: 0.72rem; font-weight: 600; width: fit-content; }

/* ─────────────────────────────────────────────────────
   CONTACT (Liên hệ)
───────────────────────────────────────────────────── */
.contact-info-item { padding: 8px 0; }
.contact-info-icon {
  width: 40px; height: 40px; border-radius: 10px;
  background: rgba(78,115,223,.1); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; flex-shrink: 0;
}
.contact-info-label { font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); margin-bottom: 2px; }
.contact-info-value { font-size: 0.88rem; color: var(--text); }
.social-btn { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 8px; font-size: 1rem; transition: all 0.2s; text-decoration: none; }
.social-btn-fb { background: #1877f2; color: #fff; }
.social-btn-fb:hover { background: #0e5ab7; color: #fff; transform: translateY(-2px); }
.social-btn-yt { background: #ff0000; color: #fff; }
.social-btn-yt:hover { background: #cc0000; color: #fff; transform: translateY(-2px); }
.social-btn-em { background: #36b9cc; color: #fff; }
.social-btn-em:hover { background: #2b9fae; color: #fff; transform: translateY(-2px); }

/* ─────────────────────────────────────────────────────
   SETTINGS DRAWER (Tùy chỉnh giao diện)
───────────────────────────────────────────────────── */
.settings-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.3);
  z-index: 1050;
  animation: fadeIn 0.2s ease;
}
.settings-drawer {
  position: fixed; top: 0; right: 0; bottom: 0;
  width: 300px; background: var(--card-bg);
  z-index: 1055; box-shadow: -4px 0 32px rgba(0,0,0,.18);
  display: flex; flex-direction: column;
  animation: slideInRight 0.25s ease;
  transition: background-color 0.3s;
}
.settings-drawer-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
}
.settings-drawer-body { flex: 1; overflow-y: auto; padding: 1.5rem; }
.settings-drawer-footer { padding: 1rem 1.5rem; border-top: 1px solid var(--border); }
.settings-section-label {
  font-size: 0.7rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.07em; color: var(--text-muted); margin-bottom: 10px;
}
.settings-color-btn {
  width: 42px; height: 42px; border-radius: 50%;
  border: 3px solid transparent; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  transition: transform 0.15s, border-color 0.15s;
}
.settings-color-btn:hover { transform: scale(1.15); }
.settings-color-btn.active { border-color: #222; transform: scale(1.1); }
.settings-mode-btn {
  flex: 1; padding: 9px 12px; border-radius: 8px;
  border: 2px solid var(--border); background: transparent;
  color: var(--text-muted); font-weight: 600; cursor: pointer;
  transition: all 0.15s; font-size: 0.83rem;
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
}
.settings-mode-btn:hover { border-color: var(--primary); color: var(--primary); }
.settings-mode-btn.active { background: var(--primary); border-color: var(--primary); color: #fff !important; }
.settings-storage-info {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px; border-radius: 8px;
  background: rgba(28,200,138,.08); color: #1cc88a;
  font-size: 0.78rem; font-weight: 600;
}

/* ─────────────────────────────────────────────────────
   STAT CARD – clickable hint
───────────────────────────────────────────────────── */
.stat-card { cursor: pointer; }
.stat-card:hover { transform: translateY(-4px); box-shadow: 0 10px 28px rgba(0,0,0,.13) !important; }
.stat-nav-hint {
  font-size: 0.72rem; font-weight: 600; margin-top: 8px;
  opacity: 0; transition: opacity 0.2s;
}
.stat-card:hover .stat-nav-hint { opacity: 1; }

.clickable-badge {
  cursor: pointer; border-radius: 8px;
  padding: 2px 8px; transition: background 0.15s;
}
.clickable-badge:hover { background: rgba(0,0,0,.06); }

/* ─────────────────────────────────────────────────────
   QUICK FILTER CHIPS (Deadline page)
───────────────────────────────────────────────────── */
.quick-chips {
  display: flex; flex-wrap: wrap; gap: 8px;
}
.quick-chip {
  padding: 5px 14px; border-radius: 20px;
  border: 1.5px solid var(--border);
  background: transparent; color: var(--text-muted);
  font-size: 0.8rem; font-weight: 600; cursor: pointer;
  transition: all 0.15s;
}
.quick-chip:hover { border-color: var(--primary); color: var(--primary); }
.qc-primary  { background: var(--primary)  !important; border-color: var(--primary)  !important; color: #fff !important; }
.qc-success  { background: #1cc88a !important; border-color: #1cc88a !important; color: #fff !important; }
.qc-danger   { background: #e74a3b !important; border-color: #e74a3b !important; color: #fff !important; }
.qc-secondary{ background: #858796 !important; border-color: #858796 !important; color: #fff !important; }
[data-theme="dark"] .quick-chip { border-color: var(--border); color: var(--text-muted); }

/* ─────────────────────────────────────────────────────
   HOMEWORK SECTION (inside SubjectCard)
───────────────────────────────────────────────────── */
.hw-section {
  border-top: 1px solid var(--border);
  padding-top: 12px;
}
.hw-tabs {
  display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px;
}
.hw-tab {
  flex: 1; min-width: 0;
  padding: 5px 10px; border-radius: 8px;
  border: 1.5px solid var(--border);
  background: transparent; color: var(--text-muted);
  font-size: 0.75rem; font-weight: 600; cursor: pointer;
  transition: all 0.15s; white-space: nowrap;
  display: inline-flex; align-items: center; justify-content: center; gap: 4px;
}
.hw-tab:hover { border-color: var(--primary); color: var(--primary); }
.hw-tab-count {
  background: rgba(0,0,0,.1); border-radius: 10px;
  padding: 1px 6px; font-size: 0.68rem;
}
.hw-tab.active .hw-tab-count { background: rgba(255,255,255,.25); }

.hw-list { display: flex; flex-direction: column; gap: 8px; margin-bottom: 10px; }
.hw-item {
  padding: 10px 12px; border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  transition: box-shadow 0.15s;
}
.hw-item:hover { box-shadow: 0 2px 10px rgba(0,0,0,.08); }
.hw-done { opacity: 0.65; }
.hw-overdue { border-left: 3px solid #e74a3b !important; }

.hw-action-btn {
  width: 28px; height: 28px; padding: 0;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 0.75rem; border-radius: 6px;
}

.hw-type-btn {
  padding: 6px 12px; border-radius: 8px;
  border: 1.5px solid var(--border);
  background: transparent; color: var(--text-muted);
  font-size: 0.82rem; font-weight: 600; cursor: pointer;
  transition: all 0.15s;
  display: inline-flex; align-items: center; gap: 5px;
}
.hw-type-btn:hover { border-color: var(--primary); color: var(--primary); }

[data-theme="dark"] .hw-item { background: rgba(255,255,255,.04); border-color: var(--border); }
[data-theme="dark"] .hw-tab  { border-color: var(--border); color: var(--text-muted); }
[data-theme="dark"] .hw-tab-count { background: rgba(255,255,255,.15); }
[data-theme="dark"] .hw-type-btn  { border-color: var(--border); color: var(--text-muted); }

/* ─── FAB (Floating Action Button) ─── */
.fab-settings {
  position: fixed; bottom: 24px; right: 24px;
  width: 52px; height: 52px; border-radius: 50%;
  background: var(--primary); color: #fff;
  border: none; font-size: 1.25rem;
  box-shadow: 0 4px 18px rgba(78,115,223,.5);
  cursor: pointer; z-index: 1040;
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.2s, box-shadow 0.2s;
}
.fab-settings:hover { transform: scale(1.1) rotate(15deg); box-shadow: 0 6px 22px rgba(78,115,223,.65); }

/* ─────────────────────────────────────────────────────
   DARK MODE
───────────────────────────────────────────────────── */
[data-theme="dark"] {
  --bg:         #0f172a;
  --card-bg:    #1e293b;
  --text:       #e2e8f0;
  --text-muted: #94a3b8;
  --border:     rgba(255,255,255,0.08);
}

[data-theme="dark"] body          { background-color: var(--bg) !important; color: var(--text) !important; }
[data-theme="dark"] .card         { background-color: var(--card-bg) !important; border-color: var(--border) !important; }
[data-theme="dark"] .card-header  { background-color: transparent !important; color: var(--text) !important; }
[data-theme="dark"] .modal-content { background-color: var(--card-bg) !important; }
[data-theme="dark"] .modal-header  { border-color: var(--border) !important; }
[data-theme="dark"] .modal-footer  { border-color: var(--border) !important; }

[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
  background-color: rgba(255,255,255,.05) !important;
  border-color: var(--border) !important;
  color: var(--text) !important;
}
[data-theme="dark"] .form-control::placeholder { color: var(--text-muted); }
[data-theme="dark"] .input-group-text { background-color: rgba(255,255,255,.05) !important; border-color: var(--border) !important; color: var(--text-muted) !important; }

[data-theme="dark"] .dropdown-menu { background-color: #1e293b !important; border: 1px solid var(--border) !important; }
[data-theme="dark"] .dropdown-item { color: var(--text) !important; }
[data-theme="dark"] .dropdown-item:hover { background-color: rgba(255,255,255,.07) !important; }
[data-theme="dark"] .dropdown-header { color: var(--text-muted) !important; }
[data-theme="dark"] .dropdown-divider { border-color: var(--border) !important; }

[data-theme="dark"] .list-group-item { background-color: var(--card-bg) !important; border-color: var(--border) !important; color: var(--text) !important; }
[data-theme="dark"] .list-group-item:hover { background-color: rgba(255,255,255,.04) !important; }

[data-theme="dark"] .settings-drawer  { background-color: var(--card-bg) !important; }
[data-theme="dark"] .btn-close { filter: invert(1) brightness(0.8); }
[data-theme="dark"] .text-muted { color: var(--text-muted) !important; }
[data-theme="dark"] .border-top, [data-theme="dark"] .border-bottom { border-color: var(--border) !important; }
[data-theme="dark"] .stat-label { color: var(--text-muted) !important; }
[data-theme="dark"] .profile-field-value { border-color: var(--border) !important; color: var(--text) !important; }
[data-theme="dark"] .contact-info-value { color: var(--text) !important; }
[data-theme="dark"] .progress { background: rgba(255,255,255,.1) !important; }
[data-theme="dark"] .lib-tab { background: rgba(255,255,255,.06) !important; color: var(--text-muted) !important; }
[data-theme="dark"] .lib-tab:hover { background: rgba(255,255,255,.12) !important; color: var(--text) !important; }
[data-theme="dark"] .lib-tab.active { background: var(--primary) !important; color: #fff !important; }
[data-theme="dark"] .lib-tab-count { background: rgba(255,255,255,.15) !important; color: var(--text-muted) !important; }
[data-theme="dark"] .badge.bg-light { background-color: rgba(255,255,255,.15) !important; color: var(--text) !important; }
[data-theme="dark"] .btn-light { background-color: rgba(255,255,255,.1) !important; border-color: transparent !important; color: var(--text) !important; }
[data-theme="dark"] .demo-info { background: rgba(78,115,223,.12) !important; border-color: rgba(78,115,223,.3) !important; }
[data-theme="dark"] .login-card { background-color: #1e293b !important; }
[data-theme="dark"] .login-card .form-label,
[data-theme="dark"] .login-card strong,
[data-theme="dark"] .login-card h2 { color: var(--text) !important; }
[data-theme="dark"] .alert-success { background-color: rgba(28,200,138,.15) !important; border-color: rgba(28,200,138,.3) !important; color: #1cc88a !important; }
[data-theme="dark"] .alert-danger  { background-color: rgba(231,74,59,.15) !important;  border-color: rgba(231,74,59,.3) !important;  color: #e74a3b !important; }

/* ─────────────────────────────────────────────────────
   DASHBOARD – greeting card, quote, hw-mini-stat
───────────────────────────────────────────────────── */
.dashboard-greeting {
  background: linear-gradient(135deg, rgba(78,115,223,.06) 0%, rgba(28,200,138,.06) 100%);
}
.dashboard-time {
  font-size: 2.2rem; font-weight: 700; line-height: 1;
  color: var(--primary);
}
.dashboard-quote {
  font-style: italic; color: var(--text-muted);
  font-size: 0.875rem; border-left: 3px solid var(--primary);
  padding-left: 12px; margin: 0;
}
.hw-mini-stat {
  display: flex; align-items: center; gap: 8px;
}
.hw-mini-icon {
  width: 36px; height: 36px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; flex-shrink: 0;
}

/* ─────────────────────────────────────────────────────
   SUBJECTS – colored top bar, stat badges
───────────────────────────────────────────────────── */
.subj-stat-badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 8px; border-radius: 20px; font-size: 0.75rem;
  background: rgba(0,0,0,.05); color: var(--text-muted);
}
[data-theme="dark"] .subj-stat-badge { background: rgba(255,255,255,.07); }

/* ─────────────────────────────────────────────────────
   PROFILE – GPA badge, progress per subject
───────────────────────────────────────────────────── */
.profile-field-value a { color: var(--primary); }

/* ─────────────────────────────────────────────────────
   CONTACT – FAQ accordion
───────────────────────────────────────────────────── */
.faq-list { display: flex; flex-direction: column; gap: 8px; }
.faq-item { border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.faq-question {
  width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 12px;
  padding: 14px 16px; background: var(--card-bg); border: none;
  text-align: left; font-size: 0.88rem; font-weight: 600; color: var(--text);
  cursor: pointer; transition: background 0.15s;
}
.faq-question:hover { background: rgba(78,115,223,.04); }
.faq-answer {
  padding: 12px 16px; font-size: 0.85rem; color: var(--text-muted);
  border-top: 1px solid var(--border); background: rgba(0,0,0,.02);
  line-height: 1.6;
}
[data-theme="dark"] .faq-answer { background: rgba(255,255,255,.02); }
[data-theme="dark"] .faq-question { background: var(--card-bg); color: var(--text); }
[data-theme="dark"] .faq-question:hover { background: rgba(255,255,255,.04); }

/* ─────────────────────────────────────────────────────
   ROLE BADGES + LOGIN TILES
───────────────────────────────────────────────────── */
.role-badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 8px; border-radius: 20px; font-size: 0.7rem; font-weight: 600;
  line-height: 1.6; white-space: nowrap;
}
.role-badge-admin   { background: rgba(231,74,59,.12);   color: #e74a3b; }
.role-badge-teacher { background: rgba(78,115,223,.12);  color: #4e73df; }
.role-badge-student { background: rgba(28,200,138,.12);  color: #1cc88a; }

/* Login role tiles */
.role-tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.role-tile {
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  padding: 12px 8px; border: 2px solid var(--border); border-radius: 12px;
  background: var(--card-bg); cursor: pointer; transition: all 0.15s;
}
.role-tile:hover { border-color: var(--primary); background: rgba(78,115,223,.04); }
.role-tile-icon { font-size: 1.4rem; line-height: 1; }
.role-tile-label { font-size: 0.78rem; }
.role-tile-email { display: block; }

/* Navbar avatar ring color per role */
.nav-avatar { border: 2px solid rgba(255,255,255,0.4); border-radius: 50%; }

/* ─────────────────────────────────────────────────────
   ADMIN PAGE
───────────────────────────────────────────────────── */
.admin-header-icon {
  width: 48px; height: 48px; border-radius: 14px;
  background: rgba(231,74,59,.12); color: #e74a3b;
  display: flex; align-items: center; justify-content: center; font-size: 1.6rem;
}
.admin-stat-icon {
  width: 40px; height: 40px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center; font-size: 1.2rem; flex-shrink: 0;
}
.admin-user-row { background: rgba(0,0,0,.025); transition: background 0.15s; }
.admin-user-row:hover { background: rgba(0,0,0,.045); }
.admin-user-avatar {
  width: 42px; height: 42px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
[data-theme="dark"] .admin-user-row { background: rgba(255,255,255,.04); }
[data-theme="dark"] .admin-user-row:hover { background: rgba(255,255,255,.07); }

/* ─────────────────────────────────────────────────────
   ANIMATIONS
───────────────────────────────────────────────────── */
@keyframes fadeIn {
  from { opacity: 0 }
  to   { opacity: 1 }
}
@keyframes slideInRight {
  from { transform: translateX(100%) }
  to   { transform: translateX(0) }
}

/* ─────────────────────────────────────────────────────
   RESPONSIVE
───────────────────────────────────────────────────── */
@media (max-width: 576px) {
  .stat-value { font-size: 1.6rem; }
  .container-fluid { padding-left: 12px; padding-right: 12px; }
  .settings-drawer { width: 280px; }
  .fab-settings { bottom: 16px; right: 16px; width: 46px; height: 46px; font-size: 1.1rem; }
}