/* ═══════════════════════════════════════════════════════════════════════════
   Physique 3ème secondaire — M. Maged ElAlfy
   Theme: Scientific Light — bright navy with cyan & formula accents
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Fonts ────────────────────────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;600&display=swap');

/* ── CSS Variables (Light theme is default) ───────────────────────────────── */
:root {
  --sci-bg:      #EEF2FF;
  --sci-surface: #E0E9FF;
  --sci-card:    #FFFFFF;
  --sci-border:  rgba(30, 80, 180, 0.14);
  --sci-accent:  #2563EB;
  --sci-accent2: #7C6EF7;
  --sci-green:   #059669;
  --sci-gold:    #D97706;
  --sci-red:     #DC2626;
  --sci-text:    #1A2B4A;
  --sci-muted:   #4A6A9A;
  --sci-glow:    rgba(37, 99, 235, 0.15);
}

/* ── Global ───────────────────────────────────────────────────────────────── */
html {
  overflow-x: hidden;           /* no horizontal scroll on the root */
}
body {
  background-color: var(--sci-bg);
  /* Subtle graph-paper grid — gives a science notebook feel */
  background-image:
    linear-gradient(rgba(37,99,235,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37,99,235,0.04) 1px, transparent 1px),
    radial-gradient(ellipse at 15% 50%, rgba(124,110,247,0.07) 0%, transparent 55%),
    radial-gradient(ellipse at 85% 20%, rgba(37,99,235,0.05) 0%, transparent 50%);
  background-size: 40px 40px, 40px 40px, 100% 100%, 100% 100%;
  font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
  color: var(--sci-text);
  min-height: 100vh;
  overflow-x: hidden;           /* no horizontal scroll on body */
  max-width: 100vw;             /* never exceed viewport width */
}

/* Prevent Bootstrap modal from adding padding-right gap or hiding scroll */
body.modal-open {
  padding-right: 0 !important;
  overflow-y: auto !important;
  overflow-x: hidden !important;
}

/* Kill the backdrop div entirely — all modals use CSS background instead */
.modal-backdrop { display: none !important; }
.modal.show     { background: rgba(0, 0, 0, 0.5); }

/* Ensure modals are always viewport-fixed and scrollable */
.modal {
  position: fixed !important;
  overflow-y: auto !important;
}

/* Ensure images and content don't overflow */
img { max-width: 100%; height: auto; }
main .container-fluid { max-width: 100vw; overflow-x: hidden; }

/* Navbar should never clip its content */
.navbar .container-fluid { overflow-x: visible; max-width: none; }

/* ── Scrollbar ────────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--sci-surface); }
::-webkit-scrollbar-thumb { background: var(--sci-accent); border-radius: 3px; }

/* ── Navbar ───────────────────────────────────────────────────────────────── */
.navbar {
  background: linear-gradient(90deg, #152038 0%, #1C2E52 50%, #152038 100%) !important;
  border-bottom: 1px solid rgba(56,217,245,0.25);
  box-shadow: 0 2px 24px rgba(0,0,0,0.35);
}
.navbar-brand {
  font-weight: 700;
  font-size: 1rem;
  color: var(--sci-accent) !important;
  letter-spacing: 0.02em;
  text-shadow: 0 0 16px rgba(56,217,245,0.55);
}
.navbar-brand .brand-sub {
  font-size: 0.68rem;
  color: var(--sci-muted);
  display: block;
  font-weight: 400;
  letter-spacing: 0.06em;
}
.navbar .nav-link {
  border-radius: 6px;
  padding: 0.4rem 0.85rem;
  color: #A8C4E0 !important;
  font-size: 0.88rem;
  transition: all 0.2s;
}
.navbar .nav-link:hover {
  background: rgba(56,217,245,0.12);
  color: var(--sci-accent) !important;
}
.navbar .dropdown-menu {
  background: #FFFFFF;
  border: 1px solid rgba(37,99,235,0.18);
  border-radius: 12px;
  box-shadow: 0 6px 24px rgba(30,80,180,0.12);
}
.navbar .dropdown-item { color: #1A2B4A; font-size: 0.88rem; padding: 0.5rem 1rem; }
.navbar .dropdown-item:hover { background: rgba(37,99,235,0.08); color: var(--sci-accent); }
.navbar .dropdown-divider { border-color: rgba(37,99,235,0.15); }
.navbar .dropdown-item-text { color: var(--sci-muted) !important; }

/* ── Cards ────────────────────────────────────────────────────────────────── */
.card {
  background: var(--sci-card) !important;
  border: 1px solid var(--sci-border) !important;
  border-radius: 14px !important;
  color: var(--sci-text);
  box-shadow: 0 4px 20px rgba(0,0,0,0.22);
  transition: box-shadow 0.2s;
}
.card-header {
  background: rgba(56,217,245,0.06) !important;
  border-bottom: 1px solid var(--sci-border) !important;
  color: var(--sci-text);
  border-radius: 14px 14px 0 0 !important;
  font-weight: 600;
}
.card-footer {
  background: rgba(37,99,235,0.03) !important;
  border-top: 1px solid var(--sci-border) !important;
}

/* ── Stat cards ───────────────────────────────────────────────────────────── */
.stat-card {
  transition: transform 0.2s, box-shadow 0.2s;
  cursor: default;
}
.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 35px rgba(56,217,245,0.18) !important;
}

/* ── Forms ────────────────────────────────────────────────────────────────── */
.form-control, .form-select {
  background: #F4F7FF !important;
  border: 1px solid rgba(37,99,235,0.25) !important;
  color: var(--sci-text) !important;
  border-radius: 8px;
}
.form-control:focus, .form-select:focus {
  background: #FFFFFF !important;
  border-color: var(--sci-accent) !important;
  box-shadow: 0 0 0 3px rgba(37,99,235,0.15) !important;
  color: var(--sci-text) !important;
}
.form-control::placeholder { color: #8BAAC8 !important; }
.form-label { color: var(--sci-muted); font-size: 0.88rem; font-weight: 500; }
.input-group-text {
  background: #E8EEFF !important;
  border: 1px solid rgba(37,99,235,0.22) !important;
  color: var(--sci-accent) !important;
}

/* ── Buttons ──────────────────────────────────────────────────────────────── */
.btn-primary {
  background: linear-gradient(135deg, #1A4A9E, #2563EB) !important;
  border: 1px solid rgba(56,217,245,0.4) !important;
  color: white !important;
  box-shadow: 0 0 14px rgba(56,217,245,0.18);
  transition: all 0.22s;
}
.btn-primary:hover {
  background: linear-gradient(135deg, #2563EB, #1A4A9E) !important;
  box-shadow: 0 0 22px rgba(56,217,245,0.32);
  transform: translateY(-1px);
}
.btn-success {
  background: linear-gradient(135deg, #047857, #059669) !important;
  border-color: var(--sci-green) !important;
  color: white !important;
}
.btn-warning {
  background: linear-gradient(135deg, #B45309, #D97706) !important;
  border-color: var(--sci-gold) !important;
  color: #FFF8E1 !important;
}
.btn-danger {
  background: linear-gradient(135deg, #991B1B, #DC2626) !important;
  border-color: var(--sci-red) !important;
  color: white !important;
}
.btn-outline-primary {
  border-color: rgba(56,217,245,0.45) !important;
  color: var(--sci-accent) !important;
  background: transparent !important;
}
.btn-outline-primary:hover {
  background: rgba(56,217,245,0.12) !important;
  border-color: var(--sci-accent) !important;
}
.btn-outline-secondary {
  border-color: rgba(168,196,224,0.35) !important;
  color: #A8C4E0 !important;
}
.btn-outline-secondary:hover { background: rgba(168,196,224,0.1) !important; }
.btn-outline-danger {
  border-color: rgba(255,107,107,0.45) !important;
  color: var(--sci-red) !important;
}
.btn-outline-danger:hover { background: rgba(255,107,107,0.1) !important; }
.btn-outline-success {
  border-color: rgba(46,204,142,0.45) !important;
  color: var(--sci-green) !important;
}
.btn-outline-success:hover { background: rgba(46,204,142,0.1) !important; }
.btn-info { background: linear-gradient(135deg, #0369A1, #0284C7) !important; color: white !important; }

/* ── Alerts ───────────────────────────────────────────────────────────────── */
.alert {
  border-radius: 10px;
  border-left-width: 4px;
}
.alert-success  { background: rgba(5,150,105,0.08);   border-color: var(--sci-green); color: #065F46; }
.alert-danger   { background: rgba(220,38,38,0.08);  border-color: var(--sci-red);   color: #991B1B; }
.alert-warning  { background: rgba(245,197,66,0.12); border-color: var(--sci-gold);  color: #92400E; }
.alert-info     { background: rgba(37,99,235,0.08);  border-color: var(--sci-accent);color: #1D4ED8; }
.alert-secondary{ background: rgba(74,106,154,0.08); border-color: #6B8BB5;          color: #2A4A7A; }

/* ── Tables ───────────────────────────────────────────────────────────────── */
.table {
  color: var(--sci-text) !important;
  border-color: rgba(56,217,245,0.12) !important;
}
.table th {
  font-size: 0.78rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.07em;
  color: var(--sci-accent) !important;
  border-color: rgba(56,217,245,0.18) !important;
  background: rgba(56,217,245,0.05) !important;
}
.table td { border-color: rgba(56,217,245,0.09) !important; vertical-align: middle; }
.table-hover tbody tr:hover { background: rgba(37,99,235,0.04) !important; }
.table-light { background: rgba(37,99,235,0.04) !important; }
.table-dark   { background: rgba(37,99,235,0.08)  !important; }
.table-bordered { border-color: rgba(37,99,235,0.12) !important; }
.table-secondary { background: rgba(74,106,154,0.06) !important; }
.table-warning   { background: rgba(245,197,66,0.06)  !important; }

/* ── Badges ───────────────────────────────────────────────────────────────── */
.badge { font-weight: 600; border-radius: 6px; letter-spacing: 0.03em; }
.bg-primary   { background: #1D4ED8 !important; }
.bg-success   { background: #065F46 !important; }
.bg-danger    { background: #991B1B !important; }
.bg-warning   { background: #92400E !important; color: #FDE68A !important; }
.bg-secondary { background: #DDE6FF !important; color: #1A2B4A !important; }
.bg-info      { background: #0C4A6E !important; }
.bg-light     { background: #EEF2FF !important; color: #1A2B4A !important; }
.bg-dark      { background: #1A2B4A !important; }

/* ── Nav tabs ─────────────────────────────────────────────────────────────── */
.nav-tabs { border-bottom: 1px solid rgba(37,99,235,0.18) !important; }
.nav-tabs .nav-link {
  color: #4A6A9A !important;
  border: 1px solid transparent;
  border-radius: 8px 8px 0 0;
}
.nav-tabs .nav-link.active {
  background: rgba(37,99,235,0.08) !important;
  border-color: rgba(37,99,235,0.2) rgba(37,99,235,0.2) transparent !important;
  color: var(--sci-accent) !important;
}
.nav-tabs .nav-link:hover { color: var(--sci-accent) !important; }

/* ── Accordion ────────────────────────────────────────────────────────────── */
.accordion-item { background: transparent !important; border-color: rgba(37,99,235,0.12) !important; }
.accordion-button {
  background: rgba(37,99,235,0.04) !important;
  color: var(--sci-text) !important;
  box-shadow: none !important;
}
.accordion-button:not(.collapsed) {
  background: rgba(37,99,235,0.09) !important;
  color: var(--sci-accent) !important;
}
.accordion-button::after { filter: none; }
.accordion-body { background: rgba(37,99,235,0.02) !important; }

/* ── Modal ────────────────────────────────────────────────────────────────── */
.modal-content {
  background: var(--sci-card) !important;
  border: 1px solid rgba(37,99,235,0.18) !important;
  border-radius: 16px;
  color: var(--sci-text);
}
.modal-header {
  border-bottom: 1px solid rgba(37,99,235,0.12) !important;
  background: rgba(37,99,235,0.04) !important;
}
.modal-footer { border-top: 1px solid rgba(37,99,235,0.12) !important; }
.btn-close { filter: none; }

/* ── Exam player ──────────────────────────────────────────────────────────── */
.q-nav-btn {
  min-width: 38px;
  border-radius: 50% !important;
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid rgba(37,99,235,0.28) !important;
  color: #1A2B4A !important;
  background: rgba(37,99,235,0.05) !important;
}
.q-nav-btn.answered  { background: #DCFCE7 !important; color: #065F46 !important; border-color: #059669 !important; }
.q-nav-btn.active    { background: #DBEAFE !important; color: #1D4ED8 !important; border-color: #2563EB !important; box-shadow: 0 0 12px rgba(37,99,235,0.25); }
.question-img { box-shadow: 0 4px 20px rgba(0,0,0,0.3); border-radius: 10px; }

/* ── Answer buttons ───────────────────────────────────────────────────────── */
.btn-check:checked + .btn-outline-primary {
  background: rgba(37,99,235,0.12) !important;
  border-color: var(--sci-accent) !important;
  color: var(--sci-accent) !important;
  box-shadow: 0 0 10px rgba(37,99,235,0.18);
}

/* ── Progress bar ─────────────────────────────────────────────────────────── */
.progress { border-radius: 99px; background: #D1DBF0; }
.progress-bar {
  border-radius: 99px;
  background: linear-gradient(90deg, #1D4ED8, var(--sci-accent));
  box-shadow: 0 0 8px rgba(37,99,235,0.25);
}

/* ── Timer ────────────────────────────────────────────────────────────────── */
#timer {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1rem;
  min-width: 70px;
  text-align: center;
  background: rgba(37,99,235,0.08) !important;
  border: 1px solid rgba(37,99,235,0.22) !important;
  color: #1D4ED8 !important;
  border-radius: 8px;
}
#timer.warning { background: rgba(217,119,6,0.1)  !important; border-color: #D97706 !important; color: #92400E !important; }
#timer.danger  { background: rgba(220,38,38,0.1)   !important; border-color: #DC2626 !important; color: #991B1B !important; }

/* ── Code blocks ──────────────────────────────────────────────────────────── */
code {
  background: rgba(37,99,235,0.08);
  color: var(--sci-accent);
  padding: 2px 8px;
  border-radius: 5px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85em;
  border: 1px solid rgba(37,99,235,0.18);
}

/* ── Text utilities override ──────────────────────────────────────────────── */
.text-muted   { color: var(--sci-muted) !important; }
.text-primary { color: var(--sci-accent) !important; }
.text-success { color: #059669 !important; }
.text-danger  { color: #DC2626 !important; }
.text-warning { color: #D97706 !important; }
.text-info    { color: #0284C7 !important; }
.bg-light.text-dark { color: var(--sci-text) !important; }
.dropdown-divider { border-color: rgba(37,99,235,0.15) !important; }

/* ── Section headings ─────────────────────────────────────────────────────── */
h4.fw-bold, h5.fw-bold { color: var(--sci-text); }
.text-primary.fw-bold  { color: var(--sci-accent) !important; }

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

/* ── Ratio containers (video) ─────────────────────────────────────────────── */
.ratio { border-radius: 0 0 12px 12px; overflow: hidden; }

/* ════════════════════════════════════════════════════════════════════════════
   LOGIN PAGE
   ════════════════════════════════════════════════════════════════════════════ */
.login-bg {
  min-height: 100vh;
  background-color: #111D35;
  background-image:
    /* fine grid */
    linear-gradient(rgba(56,217,245,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56,217,245,0.05) 1px, transparent 1px),
    /* big glow blobs */
    radial-gradient(ellipse at 25% 45%, rgba(124,110,247,0.18) 0%, transparent 55%),
    radial-gradient(ellipse at 75% 65%, rgba(56,217,245,0.14) 0%, transparent 50%);
  background-size: 40px 40px, 40px 40px, 100% 100%, 100% 100%;
  overflow: hidden;
}

/* Floating "stars" */
.login-bg::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(1.5px 1.5px at 8%  18%, rgba(56,217,245,0.7)  0%, transparent 100%),
    radial-gradient(1px   1px   at 25% 70%, rgba(255,255,255,0.5) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 42% 12%, rgba(56,217,245,0.6)  0%, transparent 100%),
    radial-gradient(1px   1px   at 60% 38%, rgba(255,255,255,0.4) 0%, transparent 100%),
    radial-gradient(2px   2px   at 78% 82%, rgba(56,217,245,0.7)  0%, transparent 100%),
    radial-gradient(1px   1px   at 15% 88%, rgba(255,255,255,0.4) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 55% 95%, rgba(56,217,245,0.5)  0%, transparent 100%),
    radial-gradient(1px   1px   at 88% 10%, rgba(255,255,255,0.5) 0%, transparent 100%),
    radial-gradient(1px   1px   at 35% 55%, rgba(124,110,247,0.5) 0%, transparent 100%),
    radial-gradient(2px   2px   at 70% 48%, rgba(56,217,245,0.6)  0%, transparent 100%),
    radial-gradient(1px   1px   at 92% 60%, rgba(255,255,255,0.3) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 5%  50%, rgba(124,110,247,0.6) 0%, transparent 100%);
  animation: twinkle 3.5s ease-in-out infinite alternate;
  pointer-events: none;
}

@keyframes twinkle {
  0%   { opacity: 0.35; }
  100% { opacity: 1; }
}

/* Physics formula watermark — purely decorative */
.login-bg::after {
  content: 'E = mc²   F = ma   ΔE = hf   λ = h/p';
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: rgba(56,217,245,0.18);
  letter-spacing: 0.15em;
  pointer-events: none;
  white-space: nowrap;
}

/* ── Animated atom ────────────────────────────────────────────────────────── */
.login-atom {
  position: relative;
  display: inline-block;
  width: 80px; height: 80px;
  margin-bottom: 1rem;
}
.login-atom .nucleus {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 18px; height: 18px;
  background: radial-gradient(circle, #38D9F5, #1D4ED8);
  border-radius: 50%;
  box-shadow: 0 0 20px rgba(56,217,245,0.9), 0 0 40px rgba(56,217,245,0.4);
}
.login-atom .orbit {
  position: absolute;
  top: 50%; left: 50%;
  border: 1.5px solid rgba(56,217,245,0.45);
  border-radius: 50%;
  transform-origin: center;
}
.login-atom .orbit-1 {
  width: 72px; height: 28px;
  margin: -14px 0 0 -36px;
  animation: spin1 2.4s linear infinite;
}
.login-atom .orbit-2 {
  width: 72px; height: 28px;
  margin: -14px 0 0 -36px;
  animation: spin2 3s linear infinite;
}
.login-atom .orbit-3 {
  width: 72px; height: 28px;
  margin: -14px 0 0 -36px;
  animation: spin3 3.6s linear infinite;
}
.login-atom .electron {
  position: absolute;
  width: 7px; height: 7px;
  background: var(--sci-accent);
  border-radius: 50%;
  top: -3.5px; left: 50%;
  margin-left: -3.5px;
  box-shadow: 0 0 10px var(--sci-accent), 0 0 20px rgba(56,217,245,0.5);
}
@keyframes spin1 { from { transform: rotate(0deg);   } to { transform: rotate(360deg); } }
@keyframes spin2 { from { transform: rotate(60deg);  } to { transform: rotate(420deg); } }
@keyframes spin3 { from { transform: rotate(120deg); } to { transform: rotate(480deg); } }

/* ── Login card ───────────────────────────────────────────────────────────── */
.login-card {
  border-radius: 22px !important;
  background: rgba(28, 43, 74, 0.92) !important;
  backdrop-filter: blur(24px);
  border: 1px solid rgba(56,217,245,0.28) !important;
  box-shadow: 0 10px 60px rgba(0,0,0,0.5), 0 0 50px rgba(56,217,245,0.07) !important;
}
.login-card h3 {
  background: linear-gradient(135deg, #38D9F5 30%, #7C6EF7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
}

/* ════════════════════════════════════════════════════════════════════════════
   DARK THEME — toggled via body.dark-theme
   ════════════════════════════════════════════════════════════════════════════ */
body.dark-theme {
  --sci-bg:      #1C2B4A;
  --sci-surface: #243358;
  --sci-card:    #2A3D6B;
  --sci-border:  rgba(100, 200, 255, 0.18);
  --sci-accent:  #38D9F5;
  --sci-accent2: #7C6EF7;
  --sci-green:   #2ECC8E;
  --sci-gold:    #F5C542;
  --sci-red:     #FF6B6B;
  --sci-text:    #E8F1FF;
  --sci-muted:   #8BAAC8;
  --sci-glow:    rgba(56, 217, 245, 0.25);
  background-color: var(--sci-bg);
  background-image:
    linear-gradient(rgba(56,217,245,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56,217,245,0.04) 1px, transparent 1px),
    radial-gradient(ellipse at 15% 50%, rgba(124,110,247,0.12) 0%, transparent 55%),
    radial-gradient(ellipse at 85% 20%, rgba(56,217,245,0.10) 0%, transparent 50%);
  background-size: 40px 40px, 40px 40px, 100% 100%, 100% 100%;
  color: var(--sci-text);
}

/* Cards */
body.dark-theme .card {
  background: #2A3D6B !important;
  border: 1px solid rgba(100,200,255,0.18) !important;
  box-shadow: 0 4px 20px rgba(0,0,0,0.22) !important;
  color: #E8F1FF;
}
body.dark-theme .card-header {
  background: rgba(56,217,245,0.06) !important;
  border-bottom: 1px solid rgba(100,200,255,0.18) !important;
  color: #E8F1FF;
}
body.dark-theme .card-footer {
  background: rgba(0,0,0,0.15) !important;
  border-top: 1px solid rgba(100,200,255,0.18) !important;
}

/* Forms */
body.dark-theme .form-control,
body.dark-theme .form-select {
  background: rgba(21,32,56,0.8) !important;
  border-color: rgba(56,217,245,0.22) !important;
  color: #E8F1FF !important;
}
body.dark-theme .form-control:focus,
body.dark-theme .form-select:focus {
  background: rgba(21,32,56,0.9) !important;
  color: #E8F1FF !important;
  box-shadow: 0 0 0 3px rgba(56,217,245,0.15) !important;
}
body.dark-theme .form-control::placeholder { color: #5A7A9A !important; }
body.dark-theme .input-group-text {
  background: rgba(21,32,56,0.9) !important;
  border-color: rgba(56,217,245,0.22) !important;
  color: #38D9F5 !important;
}

/* Tables */
body.dark-theme .table { color: #E8F1FF !important; border-color: rgba(56,217,245,0.12) !important; }
body.dark-theme .table th {
  color: #38D9F5 !important;
  background: rgba(56,217,245,0.05) !important;
  border-color: rgba(56,217,245,0.18) !important;
}
body.dark-theme .table td { border-color: rgba(56,217,245,0.09) !important; }
body.dark-theme .table-hover tbody tr:hover { background: rgba(56,217,245,0.06) !important; }

/* Text utilities */
body.dark-theme .text-muted   { color: #8BAAC8 !important; }
body.dark-theme .text-primary { color: #38D9F5 !important; }
body.dark-theme .text-success { color: #6EE7B7 !important; }
body.dark-theme .text-danger  { color: #FCA5A5 !important; }
body.dark-theme .text-warning { color: #FDE68A !important; }
body.dark-theme .text-info    { color: #BAE6FD !important; }

/* Headings */
body.dark-theme h4.fw-bold,
body.dark-theme h5.fw-bold { color: #E8F1FF; }

/* Badges */
body.dark-theme .bg-secondary { background: #2A3D6B !important; color: #A8C4E0 !important; }
body.dark-theme .bg-light     { background: #2A3D6B !important; color: #A8C4E0 !important; }
body.dark-theme .bg-dark      { background: #152038 !important; }

/* Alerts */
body.dark-theme .alert-success  { background: rgba(46,204,142,0.1);  border-color: #2ECC8E; color: #6EE7B7; }
body.dark-theme .alert-danger   { background: rgba(255,107,107,0.1); border-color: #FF6B6B; color: #FCA5A5; }
body.dark-theme .alert-warning  { background: rgba(245,197,66,0.1);  border-color: #F5C542; color: #FDE68A; }
body.dark-theme .alert-info     { background: rgba(56,217,245,0.1);  border-color: #38D9F5; color: #A5F3FC; }
body.dark-theme .alert-secondary{ background: rgba(139,170,200,0.1); border-color: #4A6580; color: #A8C4E0; }

/* Dropdowns */
body.dark-theme .navbar .dropdown-menu {
  background: #1C2E52 !important;
  border: 1px solid rgba(56,217,245,0.22) !important;
  box-shadow: 0 8px 32px rgba(0,0,0,0.35) !important;
}
body.dark-theme .navbar .dropdown-item { color: #A8C4E0 !important; }
body.dark-theme .navbar .dropdown-item:hover { background: rgba(56,217,245,0.12) !important; color: #38D9F5 !important; }

/* Modals */
body.dark-theme .modal-content {
  background: #2A3D6B !important;
  border: 1px solid rgba(56,217,245,0.22) !important;
  color: #E8F1FF;
}
body.dark-theme .modal-header {
  background: rgba(56,217,245,0.05) !important;
  border-bottom: 1px solid rgba(56,217,245,0.15) !important;
}
body.dark-theme .modal-footer { border-top: 1px solid rgba(56,217,245,0.15) !important; }
body.dark-theme .btn-close { filter: invert(1) brightness(1.2); }

/* Exam nav buttons */
body.dark-theme .q-nav-btn {
  border-color: rgba(56,217,245,0.28) !important;
  color: #A8C4E0 !important;
  background: rgba(56,217,245,0.06) !important;
}
body.dark-theme .q-nav-btn.answered  { background: #064E3B !important; color: #6EE7B7 !important; border-color: #2ECC8E !important; }
body.dark-theme .q-nav-btn.active    { background: #1D4ED8 !important; color: #38D9F5 !important; border-color: #38D9F5 !important; box-shadow: 0 0 12px rgba(56,217,245,0.35); }

/* Timer */
body.dark-theme #timer {
  background: rgba(56,217,245,0.1) !important;
  border-color: rgba(56,217,245,0.25) !important;
  color: #38D9F5 !important;
}
body.dark-theme #timer.warning { background: rgba(217,119,6,0.2)  !important; border-color: #D97706 !important; color: #FCD34D !important; }
body.dark-theme #timer.danger  { background: rgba(220,38,38,0.2)   !important; border-color: #DC2626 !important; color: #FCA5A5 !important; }

/* Progress */
body.dark-theme .progress { background: #1C2B4A; }
body.dark-theme .progress-bar {
  background: linear-gradient(90deg, #2563EB, #38D9F5);
  box-shadow: 0 0 10px rgba(56,217,245,0.4);
}

/* Accordion */
body.dark-theme .accordion-item { border-color: rgba(56,217,245,0.12) !important; }
body.dark-theme .accordion-button {
  background: rgba(56,217,245,0.04) !important;
  color: #E8F1FF !important;
  box-shadow: none !important;
}
body.dark-theme .accordion-button:not(.collapsed) {
  background: rgba(56,217,245,0.1) !important;
  color: #38D9F5 !important;
}
body.dark-theme .accordion-button::after { filter: invert(1) brightness(1.5); }
body.dark-theme .accordion-body { background: rgba(21,32,56,0.5) !important; }

/* Nav tabs */
body.dark-theme .nav-tabs { border-bottom-color: rgba(56,217,245,0.18) !important; }
body.dark-theme .nav-tabs .nav-link { color: #5A7A9A !important; }
body.dark-theme .nav-tabs .nav-link.active {
  background: rgba(56,217,245,0.1) !important;
  border-color: rgba(56,217,245,0.22) rgba(56,217,245,0.22) transparent !important;
  color: #38D9F5 !important;
}

/* Code */
body.dark-theme code {
  background: rgba(56,217,245,0.1);
  color: #38D9F5;
  border-color: rgba(56,217,245,0.22);
}

/* Scrollbar */
body.dark-theme ::-webkit-scrollbar-track { background: #243358; }
body.dark-theme ::-webkit-scrollbar-thumb { background: #38D9F5; }

/* Answer buttons */
body.dark-theme .btn-check:checked + .btn-outline-primary {
  background: rgba(56,217,245,0.15) !important;
  border-color: #38D9F5 !important;
  color: #38D9F5 !important;
  box-shadow: 0 0 14px rgba(56,217,245,0.28);
}

/* Theme toggle button */
#themeToggle {
  background: transparent;
  border: 1px solid rgba(37,99,235,0.4);
  color: #4A6A9A;
  border-radius: 20px;
  padding: 0.25rem 0.75rem;
  font-size: 0.82rem;
  cursor: pointer;
  transition: all 0.22s;
  white-space: nowrap;
}
#themeToggle:hover {
  background: rgba(37,99,235,0.1);
  color: #2563EB;
  border-color: #2563EB;
}
body.dark-theme #themeToggle {
  border-color: rgba(56,217,245,0.3);
  color: #A8C4E0;
}
body.dark-theme #themeToggle:hover {
  background: rgba(56,217,245,0.12);
  color: #38D9F5;
  border-color: #38D9F5;
}

/* ════════════════════════════════════════════════════════════════════════════
   DYNAMIC ENHANCEMENTS — Animations & Interactivity
   ════════════════════════════════════════════════════════════════════════════ */

/* ── Keyframes ────────────────────────────────────────────────────────────── */
@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(22px); }
  to   { opacity: 1; transform: none; }
}
@keyframes shimmerPass {
  0%   { transform: translateX(-100%) skewX(-20deg); opacity: 0; }
  40%  { opacity: 1; }
  100% { transform: translateX(200%)  skewX(-20deg); opacity: 0; }
}
@keyframes popIn {
  0%   { opacity: 0; transform: scale(0.90); }
  65%  { transform: scale(1.04); }
  100% { opacity: 1; transform: scale(1); }
}

/* ── Page-level entrance ──────────────────────────────────────────────────── */
main > .container-fluid {
  animation: fadeSlideUp 0.38s ease both;
}

/* ── Staggered entrance helpers ───────────────────────────────────────────── */
.anim-delay-1 { animation: fadeSlideUp 0.42s 0.04s ease both; }
.anim-delay-2 { animation: fadeSlideUp 0.42s 0.09s ease both; }
.anim-delay-3 { animation: fadeSlideUp 0.42s 0.14s ease both; }
.anim-delay-4 { animation: fadeSlideUp 0.42s 0.19s ease both; }
.anim-delay-5 { animation: fadeSlideUp 0.42s 0.24s ease both; }
.anim-delay-6 { animation: fadeSlideUp 0.42s 0.29s ease both; }

/* ── Button shimmer & press feel ──────────────────────────────────────────── */
.btn { position: relative; overflow: hidden; }
.btn::before {
  content: '';
  position: absolute;
  top: 0; left: -70%;
  width: 45%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.22), transparent);
  transform: skewX(-20deg);
  pointer-events: none;
}
.btn:hover::before { animation: shimmerPass 0.5s ease forwards; }
.btn:active        { transform: scale(0.97) !important; }

/* ── Admin stat cards — clickable ─────────────────────────────────────────── */
.stat-card-link {
  text-decoration: none !important;
  color: inherit;
  display: block;
}
.stat-card-link .stat-card {
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1), box-shadow 0.3s;
}
/* Colored top-border accent */
.stat-card-link .stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--card-accent, #4A90D9);
  border-radius: 2px 2px 0 0;
  transition: height 0.22s;
}
/* Hover: lift + grow */
.stat-card-link:hover .stat-card {
  transform: translateY(-8px) scale(1.03);
  box-shadow: 0 20px 50px rgba(0,0,0,0.13), 0 6px 16px rgba(0,0,0,0.07) !important;
}
.stat-card-link:hover .stat-card::before { height: 5px; }
/* Shimmer sweep on hover */
.stat-card-link .stat-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    transparent 25%,
    rgba(255,255,255,0.07) 50%,
    transparent 75%
  );
  transform: translateX(-100%);
  transition: transform 0.5s;
  pointer-events: none;
}
.stat-card-link:hover .stat-card::after { transform: translateX(100%); }

/* Arrow reveal on hover */
.stat-arrow {
  position: absolute;
  bottom: 9px; right: 11px;
  font-size: 0.8rem;
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity 0.22s, transform 0.22s;
  color: var(--card-accent, #4A90D9);
}
.stat-card-link:hover .stat-arrow { opacity: 1; transform: translateX(0); }

/* Icon box */
.stat-icon-box {
  width: 38px; height: 38px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.25s;
}
.stat-card-link:hover .stat-icon-box { transform: scale(1.15) rotate(-6deg); }

/* ── Quick action cards ────────────────────────────────────────────────────── */
.quick-action-card {
  text-decoration: none !important;
  color: inherit;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1), box-shadow 0.3s;
  display: block;
}
.quick-action-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--card-accent, #4A90D9);
  border-radius: 2px 2px 0 0;
}
.quick-action-card:hover {
  transform: translateY(-6px) scale(1.03);
  box-shadow: 0 16px 44px rgba(0,0,0,0.13) !important;
  color: inherit;
}
.qac-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
  transition: transform 0.25s cubic-bezier(0.34,1.56,0.64,1);
}
.quick-action-card:hover .qac-icon { transform: scale(1.18) rotate(-8deg); }

/* ── Greeting name gradient ────────────────────────────────────────────────── */
#greetingText span {
  background: linear-gradient(135deg, var(--sci-accent), var(--sci-accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── General card hover lift (non-stat pages) ──────────────────────────────── */
.card:not(.stat-card) {
  transition: box-shadow 0.25s, transform 0.25s;
}

/* ── Clickable table rows ──────────────────────────────────────────────────── */
tr[onclick] { cursor: pointer; }
tr[onclick]:hover > td {
  background: rgba(37,99,235,0.04) !important;
}

/* ── Dark theme overrides for new elements ─────────────────────────────────── */
body.dark-theme .stat-card-link:hover .stat-card {
  box-shadow: 0 20px 50px rgba(0,0,0,0.35), 0 0 20px rgba(56,217,245,0.08) !important;
}
body.dark-theme .quick-action-card:hover {
  box-shadow: 0 16px 44px rgba(0,0,0,0.35) !important;
}
body.dark-theme #liveClock {
  background: rgba(56,217,245,0.1) !important;
  color: #38D9F5 !important;
  border-color: rgba(56,217,245,0.25) !important;
}
body.dark-theme tr[onclick]:hover > td {
  background: rgba(56,217,245,0.05) !important;
}

/* ── Notification Bell ────────────────────────────────────────────────────── */
.notif-bell-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  color: #fff;
  background: rgba(255,255,255,0.15);
  border: 1.5px solid rgba(255,255,255,0.25);
  text-decoration: none;
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
}
.notif-bell-btn:hover {
  background: rgba(255,255,255,0.28);
  color: #fff;
  transform: scale(1.08);
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}
/* Jiggle animation when there are unread notifications */
.notif-bell-btn.has-notif i {
  animation: bellJiggle 1.2s ease infinite;
  transform-origin: top center;
  display: inline-block;
}
@keyframes bellJiggle {
  0%,100% { transform: rotate(0deg); }
  10%      { transform: rotate(14deg); }
  20%      { transform: rotate(-12deg); }
  30%      { transform: rotate(10deg); }
  40%      { transform: rotate(-8deg); }
  50%      { transform: rotate(5deg); }
  60%      { transform: rotate(-4deg); }
  70%      { transform: rotate(2deg); }
  80%      { transform: rotate(-1deg); }
}
/* Badge dot */
.notif-badge-dot {
  top: 2px;
  right: 2px;
  min-width: 18px;
  height: 18px;
  padding: 0 4px;
  border-radius: 9px;
  background: #E74C3C;
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  line-height: 18px;
  text-align: center;
  border: 2px solid var(--sci-card);
  /* Pulse when new notifications arrive */
  animation: badgePulse 2s ease infinite;
}
@keyframes badgePulse {
  0%,100% { box-shadow: 0 0 0 0 rgba(231,76,60,0.5); }
  50%     { box-shadow: 0 0 0 6px rgba(231,76,60,0); }
}

body.dark-theme .notif-bell-btn {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.15);
}
body.dark-theme .notif-bell-btn:hover {
  background: rgba(255,255,255,0.2);
}

/* ── Language Switcher ───────────────────────────────────────────────────── */
.lang-switcher {
  gap: 2px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 20px;
  padding: 3px;
}
.lang-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 28px;
  border-radius: 16px;
  font-size: 1.1rem;
  text-decoration: none;
  transition: background 0.15s, transform 0.15s;
  line-height: 1;
}
.lang-btn:hover {
  background: rgba(255,255,255,0.2);
  transform: scale(1.12);
}
.lang-btn.lang-active {
  background: rgba(255,255,255,0.28);
  box-shadow: 0 1px 6px rgba(0,0,0,0.18);
}
body.dark-theme .lang-switcher {
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.12);
}
body.dark-theme .lang-btn.lang-active {
  background: rgba(56,217,245,0.18);
}