/* ═══════════════════════════════════════════
   UPTET MASTER PYQ — Premium CSS
   Design: Saffron × Indigo × Glassmorphism
═══════════════════════════════════════════ */

/* ─── DESIGN TOKENS ─── */
:root {
  --saffron: #FF6B2B;
  --saffron-light: #FF8C55;
  --saffron-dark: #E05500;
  --saffron-glow: rgba(255,107,43,0.25);
  --jade: #00D9A3;
  --jade-light: #33E8B7;
  --jade-glow: rgba(0,217,163,0.2);
  --purple: #9B59B6;
  --purple-glow: rgba(155,89,182,0.25);
  --blue: #3498DB;
  --blue-glow: rgba(52,152,219,0.25);
  --pink: #FF2D78;
  --success: #27AE60;
  --warning: #F39C12;
  --danger: #E74C3C;

  /* Dark theme (default) */
  --bg-primary: #0F0E17;
  --bg-secondary: #1A1927;
  --bg-tertiary: #231F35;
  --glass-bg: rgba(255,255,255,0.04);
  --glass-border: rgba(255,255,255,0.08);
  --glass-hover: rgba(255,255,255,0.07);
  --glass-shine: rgba(255,255,255,0.035);
  --text-primary: #FFFFFE;
  --text-secondary: #A7A9BE;
  --text-muted: #6B6D85;
  --shadow: 0 8px 32px rgba(0,0,0,0.4);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.3);
  --shadow-glow: 0 0 60px rgba(255,107,43,0.08);
  --noise-opacity: 0.012;
  --sidebar-width: 240px;
  --topbar-h: 56px;
  --exam-switcher-h: 58px;
  --bottom-nav-h: 64px;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --font-display: 'Baloo 2', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
  --transition-slow: 0.5s cubic-bezier(0.4,0,0.2,1);
  --transition-bounce: 0.5s cubic-bezier(0.34,1.56,0.64,1);
}

[data-theme="light"],
[data-effective-theme="light"] {
  --bg-primary: #F0EFF8;
  --bg-secondary: #E8E6F5;
  --bg-tertiary: #DDDAF0;
  --glass-bg: rgba(255,255,255,0.6);
  --glass-border: rgba(255,255,255,0.85);
  --glass-hover: rgba(255,255,255,0.8);
  --glass-shine: rgba(255,255,255,0.3);
  --text-primary: #0F0E17;
  --text-secondary: #3A3B4D;
  --text-muted: #696A82;
  --shadow: 0 8px 32px rgba(15,14,23,0.12);
  --shadow-card: 0 4px 24px rgba(15,14,23,0.08);
  --shadow-glow: 0 0 40px rgba(255,107,43,0.06);
  --noise-opacity: 0.02;
}

/* Auto theme — system preference fallback */
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg-primary: #F0EFF8;
    --bg-secondary: #E8E6F5;
    --bg-tertiary: #DDDAF0;
    --glass-bg: rgba(255,255,255,0.6);
    --glass-border: rgba(255,255,255,0.85);
    --glass-hover: rgba(255,255,255,0.8);
    --glass-shine: rgba(255,255,255,0.3);
    --text-primary: #0F0E17;
    --text-secondary: #4A4B5E;
    --text-muted: #8889A0;
    --shadow: 0 8px 32px rgba(15,14,23,0.12);
    --shadow-card: 0 4px 24px rgba(15,14,23,0.08);
    --shadow-glow: 0 0 40px rgba(255,107,43,0.06);
    --noise-opacity: 0.02;
  }
}

/* ─── RESET & BASE ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  overflow-x: hidden;
  transition: background var(--transition-slow), color var(--transition-slow), border-color var(--transition-slow);
}

/* Smooth theme transition — scoped to interactive/themed elements only.
   The old universal `*` rule animated every paint on the page, causing
   micro-stalls during scroll and re-renders. */
a, button, input, select, textarea,
.glass, .card, .stat-card, .nav-item, .bn-item, .option-btn,
.search-chip, .test-type-card, .q-card, .question-list-item,
.plan-card, .filter-select, .btn-start-test, .btn-icon, .action-btn,
svg path, svg circle, svg line {
  transition-property: background-color, border-color, color, box-shadow;
  transition-duration: var(--transition);
  transition-timing-function: cubic-bezier(0.4,0,0.2,1);
}

/* Respect reduced-motion: kill the infinite emoji/shimmer/pulse animations and
   long transitions for users who ask for less motion (also a perf win). */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* Search loading skeleton */
.search-skeleton { display: flex; flex-direction: column; gap: 12px; padding: 8px 0; }
.search-skeleton .sk-row {
  height: 64px; border-radius: var(--radius);
  background: linear-gradient(90deg, var(--glass-bg) 25%, rgba(255,255,255,0.08) 37%, var(--glass-bg) 63%);
  background-size: 400% 100%;
  animation: skShimmer 1.2s ease infinite;
}
@keyframes skShimmer { 0% { background-position: 100% 0; } 100% { background-position: 0 0; } }

/* ─── SCROLLBAR ─── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { 
  background: linear-gradient(180deg, var(--saffron), var(--purple)); 
  border-radius: 4px; 
  border: 1px solid transparent;
  background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover { background: var(--saffron); }

/* ─── ACCESSIBILITY ─── */
:focus-visible {
  outline: 2px solid var(--saffron);
  outline-offset: 2px;
  border-radius: 4px;
}
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible {
  outline-offset: 2px;
}

::selection {
  background: rgba(255,107,43,0.3);
  color: var(--text-primary);
}

/* ─── GLASS UTILITY ─── */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  box-shadow: 0 4px 16px rgba(0,0,0,0.12), 0 0 0 1px rgba(255,255,255,0.03) inset;
  transition: transform 0.4s cubic-bezier(0.34,1.56,0.64,1), box-shadow 0.3s ease, border-color 0.3s ease;
  position: relative;
  overflow: hidden;
  contain: paint; /* isolate repaints of this card from the rest of the page */
}
.glass::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, var(--glass-shine) 0%, transparent 50%);
  pointer-events: none;
  border-radius: inherit;
  z-index: 0;
}
/* Inner glow ring */
.glass::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  border: 1px solid transparent;
  background: linear-gradient(135deg, rgba(255,107,43,0.08), transparent 40%, transparent 60%, rgba(0,217,163,0.06)) border-box;
  -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.5s ease;
}
.glass:hover::after {
  opacity: 1;
}
.glass > * { position: relative; z-index: 1; }
.glass:hover {
  border-color: rgba(255,107,43,0.25);
  box-shadow: var(--shadow-glow), 0 8px 32px rgba(0,0,0,0.15), inset 0 1px 0 rgba(255,255,255,0.06);
  transform: translateY(-3px);
}

/* ─── SIDEBAR FOCUS TIMER ─── */
.sidebar-focus-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.focus-btn {
  flex: 1;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--glass-border);
  background: linear-gradient(135deg, rgba(255,107,43,0.12), rgba(0,217,163,0.08));
  color: var(--text-primary);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.3s cubic-bezier(0.34,1.56,0.64,1), transform 0.3s cubic-bezier(0.34,1.56,0.64,1);
  font-family: var(--font-body);
  text-align: center;
}
.focus-btn:hover { background: linear-gradient(135deg, rgba(255,107,43,0.2), rgba(0,217,163,0.12)); transform: translateY(-1px); }
.focus-btn:active { transform: scale(0.96); }
.focus-display {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--saffron);
  min-width: 60px;
  text-align: center;
}

/* ─── SIDEBAR ─── */
.sidebar {
  width: var(--sidebar-width);
  height: 100vh;
  position: fixed;
  left: 0; top: 0;
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary);
  border-right: 1px solid var(--glass-border);
  z-index: 100;
  transition: transform var(--transition-slow), background var(--transition-slow), border-color var(--transition-slow);
  overflow-y: auto;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 24px 20px 20px;
  border-bottom: 1px solid var(--glass-border);
}

.logo-mark {
  width: 40px; height: 40px;
  border-radius: 10px;
  box-shadow: 0 4px 16px rgba(22,41,74,0.4);
  flex-shrink: 0;
}

.logo-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  color: var(--text-primary);
  display: block;
  line-height: 1.2;
}

.logo-sub {
  font-size: 11px;
  color: var(--text-muted);
  display: block;
}

.logo-tagline {
  font-size: 10px;
  font-weight: 500;
  color: var(--text-muted);
  display: block;
  margin-top: 1px;
}
.logo-tagline-en {
  font-size: 8px;
  font-weight: 400;
  letter-spacing: 1.5px;
  color: var(--text-dim, var(--text-muted));
  opacity: 0.8;
}

.sidebar-nav {
  flex: 1;
  padding: 12px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: background 0.3s cubic-bezier(0.34,1.56,0.64,1), color 0.3s cubic-bezier(0.34,1.56,0.64,1), transform 0.3s cubic-bezier(0.34,1.56,0.64,1), border-color 0.3s cubic-bezier(0.34,1.56,0.64,1);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  user-select: none;
  position: relative;
  overflow: hidden;
}

.nav-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 0;
  border-radius: 0 3px 3px 0;
  background: linear-gradient(180deg, var(--saffron), var(--saffron-light));
  transition: height var(--transition);
  box-shadow: 0 0 8px var(--saffron-glow);
}

.nav-item svg {
  width: 18px; height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
  transition: transform 0.4s cubic-bezier(0.34,1.56,0.64,1);
}

.nav-item:hover {
  background: var(--glass-hover);
  color: var(--text-primary);
  transform: translateX(4px);
}
.nav-item:hover svg { transform: scale(1.15) rotate(-3deg); }

.nav-item.active {
  background: linear-gradient(135deg, rgba(255,107,43,0.15), transparent);
  color: var(--saffron);
  border: 1px solid rgba(255,107,43,0.25);
  font-weight: 600;
}
.nav-item.active::before { height: 28px; }
.nav-item.active svg { filter: drop-shadow(0 0 6px var(--saffron-glow)); }

.sidebar-footer {
  padding: 16px;
  padding-bottom: 72px; /* clear fixed exam-switcher at bottom:24px */
  border-top: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all var(--transition);
  position: relative;
}

.theme-toggle:hover { color: var(--saffron); border-color: var(--saffron); background: rgba(255,107,43,0.08); transform: scale(1.05); }
.theme-toggle:active { transform: scale(0.85); }
.theme-toggle svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; transition: transform 0.6s cubic-bezier(0.34,1.56,0.64,1); }
.theme-toggle:hover svg { transform: rotate(60deg) scale(1.15); }
/* Spin animation when class is added via JS */
.theme-toggle.spin svg { transform: rotate(360deg) scale(1.2); }
.theme-toggle .theme-label {
  position: absolute; left: 44px; top: 50%; transform: translateY(-50%);
  font-size: 11px; font-weight: 600; color: var(--text-muted);
  white-space: nowrap; opacity: 0; pointer-events: none;
  transition: opacity var(--transition);
}
.theme-toggle:hover .theme-label { opacity: 1; }

.install-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: linear-gradient(135deg, var(--saffron), var(--saffron-light));
  border-radius: var(--radius-sm);
  color: white;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

.install-btn:hover { transform: translateY(-1px); box-shadow: 0 4px 16px var(--saffron-glow); }
.install-btn svg { width: 16px; height: 16px; stroke: white; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* ─── TOPBAR (mobile) ─── */
.topbar {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--topbar-h);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--glass-border);
  z-index: 90;
  align-items: center;
  padding: 0 16px;
  justify-content: space-between;
}
.topbar::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--saffron), var(--jade), transparent);
  opacity: 0.4;
}

.topbar-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
}

.menu-btn, .search-btn {
  width: 36px; height: 36px;
  background: none; border: none;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-primary);
  border-radius: 8px;
}

.menu-btn svg, .search-btn svg {
  width: 20px; height: 20px;
  stroke: currentColor; fill: none;
  stroke-width: 2; stroke-linecap: round;
}

/* ─── EXAM SWITCHER ─── */
/* Desktop: fixed pill anchored to bottom of the sidebar column */
.exam-switcher {
  position: fixed;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  display: flex;
  justify-content: center;
  padding: 10px 12px;
  z-index: 200;
  background: var(--bg-secondary);
  border-top: 1px solid var(--glass-border);
  border-right: 1px solid var(--glass-border);
}
.exam-switcher-track {
  display: flex;
  gap: 3px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 28px;
  padding: 3px;
  box-shadow: inset 0 2px 6px rgba(0,0,0,0.4), 0 2px 8px rgba(0,0,0,0.3);
}
.exam-btn {
  padding: 7px 22px;
  border-radius: 22px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4,0,0.2,1);
  font-family: var(--font-display);
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 5px;
  min-width: 90px;
  justify-content: center;
}
.exam-btn-abbr {
  font-size: 9px;
  font-weight: 800;
  background: rgba(255,255,255,0.15);
  border-radius: 4px;
  padding: 1px 4px;
  letter-spacing: 0.3px;
}
.exam-btn.active {
  background: linear-gradient(135deg, var(--saffron) 0%, #ff8c5a 100%);
  color: #fff;
  box-shadow: 0 3px 12px rgba(255,107,43,0.45), 0 1px 3px rgba(0,0,0,0.2);
  transform: scale(1.02);
}
.exam-btn.active .exam-btn-abbr {
  background: rgba(255,255,255,0.25);
}
.exam-btn:not(.active):hover {
  color: var(--saffron);
  background: rgba(255,107,43,0.08);
}
.subject-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.subject-pill {
  padding: 6px 14px;
  border-radius: 20px;
  border: 1px solid var(--glass-border);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.82rem;
  font-family: var(--font-display);
  transition: all 0.2s;
}
.subject-pill.active { background: var(--saffron); color: #fff; border-color: var(--saffron); }

/* ─── MAIN CONTENT ─── */
.main {
  margin-left: var(--sidebar-width);
  flex: 1;
  min-height: 100vh;
  padding: 32px;
  max-width: calc(100vw - var(--sidebar-width));
}

/* ─── PAGES ─── */
/* Cap + center content on desktop so a wide monitor doesn't stretch cards,
   text and the exam edge-to-edge. Below this width it's a no-op (full width). */
.page { display: none; animation: fadeIn 0.3s ease; max-width: 1240px; margin-inline: auto; }
.page.active { display: block; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 12px;
  padding: 16px 0 8px;
}

.page-title {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--saffron), var(--saffron-light), #FFB088);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: font-size 0.3s ease;
}
.page-header.collapsed .page-title {
  font-size: 20px;
}

.page-subtitle {
  font-size: 15px;
  color: var(--text-secondary);
  margin-top: 2px;
}

.section-title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 28px 0 14px;
}

/* ─── STATS GRID ─── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

.stat-card {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: all 0.35s cubic-bezier(0.34,1.56,0.64,1);
  cursor: default;
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 60px; height: 60px;
  border-radius: 50%;
  opacity: 0.08;
  transform: translate(20px, -20px);
  transition: transform 0.4s ease, opacity 0.4s ease;
}

.stat-card[data-color="saffron"]::before { background: var(--saffron); }
.stat-card[data-color="jade"]::before { background: var(--jade); }
.stat-card[data-color="purple"]::before { background: var(--purple); }
.stat-card[data-color="blue"]::before { background: var(--blue); }

.stat-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}
.stat-card[data-color="saffron"]::after { background: radial-gradient(600px circle at var(--mx,50%) var(--my,50%), rgba(255,107,43,0.06), transparent 60%); }
.stat-card[data-color="jade"]::after { background: radial-gradient(600px circle at var(--mx,50%) var(--my,50%), rgba(0,217,163,0.06), transparent 60%); }
.stat-card[data-color="purple"]::after { background: radial-gradient(600px circle at var(--mx,50%) var(--my,50%), rgba(138,43,226,0.06), transparent 60%); }
.stat-card[data-color="blue"]::after { background: radial-gradient(600px circle at var(--mx,50%) var(--my,50%), rgba(52,152,219,0.06), transparent 60%); }

.stat-card:hover { transform: translateY(-4px) scale(1.02); box-shadow: var(--shadow-card); }
.stat-card:hover::before { transform: translate(10px, -10px) scale(1.5); opacity: 0.15; }
.stat-card:hover::after { opacity: 1; }

.stat-icon {
  font-size: 24px;
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 12px;
  position: relative;
}
.stat-card[data-color="saffron"] .stat-icon { background: rgba(255,107,43,0.12); }
.stat-card[data-color="jade"] .stat-icon { background: rgba(0,217,163,0.12); }
.stat-card[data-color="purple"] .stat-icon { background: rgba(138,43,226,0.12); }
.stat-card[data-color="blue"] .stat-icon { background: rgba(52,152,219,0.12); }
.stat-value {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ─── READINESS METER ─── */
.readiness-card {
  padding: 20px 24px;
  margin-bottom: 4px;
}

.readiness-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.readiness-title { font-weight: 600; font-size: 15px; }

.exam-countdown-card {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap; padding: 20px 24px; cursor: pointer;
}
.exam-countdown-left { display: flex; align-items: center; gap: 14px; }
.exam-countdown-num {
  font-family: var(--font-mono); font-size: 40px; font-weight: 800;
  color: var(--text-primary); line-height: 1;
}
.exam-countdown-text { display: flex; flex-direction: column; gap: 2px; }
.exam-countdown-title { font-family: var(--font-display); font-weight: 700; font-size: 15px; color: var(--text-primary); }
.exam-countdown-sub { font-size: 12px; color: var(--text-muted); }
.exam-countdown-pill {
  flex-shrink: 0; font-size: 10.5px; font-weight: 700; letter-spacing: 0.05em;
  text-transform: uppercase; padding: 6px 14px; border-radius: 20px;
  border: 1px solid var(--glass-border); color: var(--saffron);
  background: rgba(255,107,43,0.08); white-space: nowrap;
}
.readiness-score {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--saffron);
}

.readiness-bar-wrap {
  width: 100%;
  height: 8px;
  background: var(--bg-tertiary);
  border-radius: 4px;
  overflow: hidden;
}

.readiness-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--saffron), var(--jade), var(--saffron));
  background-size: 200% 100%;
  border-radius: 4px;
  transition: width 1.2s cubic-bezier(0.34,1.56,0.64,1);
  animation: readinessShimmer 3s ease-in-out infinite;
  position: relative;
}
.readiness-bar::after {
  content: '';
  position: absolute; right: -3px; top: -3px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--jade);
  box-shadow: 0 0 10px rgba(0,217,163,0.6);
  animation: readDot 2s ease-in-out infinite;
}
@keyframes readDot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.7; }
}
@keyframes readinessShimmer {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.readiness-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 6px;
  font-size: 11px;
  color: var(--text-muted);
}

/* ─── SUBJECT CARDS ─── */
.subject-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.subject-card {
  padding: 20px;
  cursor: pointer;
  transition: transform 0.35s cubic-bezier(0.34,1.56,0.64,1), box-shadow 0.35s cubic-bezier(0.34,1.56,0.64,1), border-color 0.35s cubic-bezier(0.34,1.56,0.64,1);
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
  overflow: hidden;
}

.subject-card:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 16px 48px rgba(255,107,43,0.2);
  border-color: rgba(255,107,43,0.4);
}
.subject-card:active { transform: translateY(-1px) scale(1.01); }

.subject-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(600px circle at var(--mx,50%) var(--my,50%), rgba(255,107,43,0.06), transparent 60%);
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}
.subject-card:hover::after { opacity: 1; }

.subject-emoji { font-size: 28px; display: inline-block; animation: emojiBreathe 3s ease-in-out infinite; }
@keyframes emojiBreathe {
  0%, 100% { transform: scale(1) translateY(0); }
  50% { transform: scale(1.08) translateY(-3px); }
}
/* Different delays per card so they don't all pulse together */
.subject-card:nth-child(1) .subject-emoji { animation-delay: 0s; }
.subject-card:nth-child(2) .subject-emoji { animation-delay: 0.4s; }
.subject-card:nth-child(3) .subject-emoji { animation-delay: 0.8s; }
.subject-card:nth-child(4) .subject-emoji { animation-delay: 1.2s; }
.subject-card:nth-child(5) .subject-emoji { animation-delay: 1.6s; }
.subject-name {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}

.subject-eng { font-size: 12px; color: var(--text-muted); }

.subject-progress-wrap {
  width: 100%; height: 4px;
  background: var(--bg-tertiary);
  border-radius: 2px;
  overflow: hidden;
  margin-top: 4px;
}

.subject-progress {
  height: 100%;
  background: linear-gradient(90deg, var(--saffron), var(--jade));
  border-radius: 2px;
  transition: width 0.8s cubic-bezier(0.34,1.56,0.64,1);
  position: relative;
}
.subject-progress::after {
  content: '';
  position: absolute; right: -2px; top: -2px;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--jade);
  box-shadow: 0 0 6px rgba(0,217,163,0.5);
  animation: subjDot 2.5s ease-in-out infinite;
}
@keyframes subjDot {
  0%, 100% { transform: scale(1); opacity: 0.8; }
  50% { transform: scale(1.4); opacity: 0.4; }
}

.subject-meta {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
}

/* ─── QUICK ACTIONS ─── */
.quick-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.action-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.3s cubic-bezier(0.34,1.56,0.64,1), transform 0.3s cubic-bezier(0.34,1.56,0.64,1), box-shadow 0.3s cubic-bezier(0.34,1.56,0.64,1);
  font-family: var(--font-body);
  position: relative;
  overflow: hidden;
}

.action-btn svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.action-btn:hover { background: var(--glass-hover); transform: translateY(-2px); box-shadow: 0 4px 16px rgba(0,0,0,0.15); }
.action-btn:active { transform: translateY(0) scale(0.96); }
.action-btn.primary {
  background: linear-gradient(135deg, var(--saffron), var(--saffron-light));
  border-color: transparent;
  color: white;
  box-shadow: 0 4px 16px var(--saffron-glow);
}
.action-btn.primary:hover { box-shadow: 0 8px 32px var(--saffron-glow); transform: translateY(-2px); }
.action-btn.primary:active { transform: translateY(0) scale(0.96); }

/* ─── STREAK BADGE ─── */
.streak-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: linear-gradient(135deg, rgba(255,107,43,0.15), rgba(255,107,43,0.05));
  border: 1px solid rgba(255,107,43,0.3);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 700;
  color: var(--saffron);
  animation: streakPulse 3s ease-in-out infinite;
}
@keyframes streakPulse {
  0%, 100% { box-shadow: 0 0 0px rgba(255,107,43,0); }
  50% { box-shadow: 0 0 20px rgba(255,107,43,0.15); }
}

.streak-badge svg { width: 14px; height: 14px; stroke: var(--saffron); fill: var(--saffron); stroke-width: 2; }

/* ─── ACTIVITY LIST ─── */
.activity-list { display: flex; flex-direction: column; gap: 8px; }

.activity-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  font-size: 13px;
  color: var(--text-secondary);
}

.activity-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--saffron);
  flex-shrink: 0;
}

/* ─── EMPTY STATE ─── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 40px 20px;
  text-align: center;
  color: var(--text-muted);
}

.empty-icon { font-size: 40px; margin-bottom: 12px; }

.empty-illustration {
  width: 120px; height: 100px;
  margin-bottom: 16px;
  position: relative;
}
.empty-illustration svg {
  width: 100%; height: 100%;
}
.empty-illustration .il-book { fill: none; stroke: var(--text-muted); stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; opacity: 0.3; }
.empty-illustration .il-accent { stroke: var(--saffron); opacity: 0.5; }
.empty-illustration .il-accent-fill { fill: var(--saffron); opacity: 0.15; }
.empty-illustration .il-muted { stroke: var(--text-muted); opacity: 0.2; }
.empty-illustration .il-shine { stroke: var(--saffron); opacity: 0.08; }
.empty-illustration .il-float {
  animation: ilFloat 3s ease-in-out infinite;
}
@keyframes ilFloat {
  0%, 100% { transform: translateY(0) scale(1); opacity: 1; }
  50% { transform: translateY(-8px) scale(1.1); opacity: 0.6; }
}

.empty-illustration {
  animation: emptyFloat 3s ease-in-out infinite;
}
@keyframes emptyFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.btn-start {
  margin-top: 12px;
  padding: 8px 16px;
  background: var(--saffron);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

/* ─── FILTER BAR ─── */
.filter-bar {
  display: flex;
  gap: 12px;
  padding: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
  align-items: center;
}

.filter-select {
  padding: 8px 12px;
  background: var(--bg-tertiary);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 13px;
  font-family: var(--font-body);
  cursor: pointer;
  outline: none;
  transition: border-color var(--transition);
}

.filter-select:focus { border-color: var(--saffron); }

.filter-search-wrap {
  flex: 1;
  min-width: 200px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--bg-tertiary);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  transition: border-color var(--transition);
}

.filter-search-wrap:focus-within { border-color: var(--saffron); }
.filter-search-wrap svg { width: 14px; height: 14px; stroke: var(--text-muted); fill: none; stroke-width: 2; stroke-linecap: round; flex-shrink: 0; }

.filter-search {
  background: none;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-size: 13px;
  font-family: var(--font-body);
  width: 100%;
}

.filter-search::placeholder { color: var(--text-muted); }

/* ─── STUDY LAYOUT ─── */
.study-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 20px;
  height: calc(100vh - 240px);
}

.question-list {
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-right: 4px;
}

.question-list-item {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  cursor: pointer;
  transition: all var(--transition);
  font-size: 13px;
  color: var(--text-secondary);
}

.question-list-item:hover { background: var(--glass-hover); color: var(--text-primary); }
.question-list-item.active { border-color: var(--saffron); background: rgba(255,107,43,0.08); color: var(--text-primary); }

.question-list-item .q-meta {
  display: flex;
  gap: 6px;
  margin-bottom: 6px;
  flex-wrap: wrap;
}

.q-tag {
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 600;
  background: var(--bg-tertiary);
  color: var(--text-muted);
}

.q-tag.year { color: var(--jade); background: rgba(0,217,163,0.1); }
.q-tag.subject { color: var(--saffron); background: rgba(255,107,43,0.1); }
.q-tag.easy { color: #27AE60; background: rgba(39,174,96,0.1); }
.q-tag.medium { color: #F39C12; background: rgba(243,156,18,0.1); }
.q-tag.hard { color: #E74C3C; background: rgba(231,76,60,0.1); }

.q-text {
  font-size: 13px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.question-detail {
  padding: 24px;
}

.no-selection {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-muted);
  gap: 12px;
}

.no-sel-icon { font-size: 48px; }

/* ─── QUESTION DETAIL CONTENT ─── */
.qd-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 16px;
  gap: 12px;
}

.qd-meta { display: flex; gap: 6px; flex-wrap: wrap; }

.qd-actions { display: flex; gap: 8px; }

.btn-icon {
  width: 32px; height: 32px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition);
}

.btn-icon:hover { color: var(--saffron); border-color: var(--saffron); }
.btn-icon svg { width: 14px; height: 14px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.btn-icon.bookmarked { color: var(--saffron); border-color: var(--saffron); background: rgba(255,107,43,0.1); }

.qd-question {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-primary);
  margin-bottom: 20px;
  font-weight: 500;
}

.qd-options { display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px; }

.option-btn {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  cursor: pointer;
  transition: all var(--transition);
  text-align: left;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-primary);
  line-height: 1.5;
}

.option-btn:hover { background: var(--glass-hover); border-color: var(--saffron); }
.option-btn.correct { border-color: var(--jade); background: rgba(0,217,163,0.08); }
.option-btn.wrong { border-color: #E74C3C; background: rgba(231,76,60,0.08); }
.option-btn.selected { border-color: var(--saffron); background: rgba(255,107,43,0.08); }

.option-label {
  width: 24px; height: 24px;
  border-radius: 6px;
  background: var(--bg-tertiary);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
  color: var(--text-muted);
}

.option-btn.correct .option-label { background: var(--jade); color: white; }
.option-btn.wrong .option-label { background: #E74C3C; color: white; }
.option-btn.selected .option-label { background: var(--saffron); color: white; }

.solution-panel {
  border-top: 1px solid var(--glass-border);
  padding-top: 20px;
  display: none;
}

.solution-panel.visible { display: block; }

.solution-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.solution-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: rgba(0,217,163,0.1);
  border: 1px solid rgba(0,217,163,0.3);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  color: var(--jade);
}

.solution-text {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-secondary);
}

.solution-steps {
  margin-top: 12px;
  padding: 12px 16px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--saffron);
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.confidence-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
  font-size: 12px;
  color: var(--text-muted);
}

.conf-track {
  flex: 1; height: 4px;
  background: var(--bg-tertiary);
  border-radius: 2px;
  overflow: hidden;
}

.conf-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--saffron), var(--jade));
  border-radius: 2px;
}

.btn-toggle-solution {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(0,217,163,0.1);
  border: 1px solid rgba(0,217,163,0.3);
  border-radius: 8px;
  color: var(--jade);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-body);
}

.btn-toggle-solution:hover { background: rgba(0,217,163,0.2); }

/* ─── TEST MODE ─── */
.test-types-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.test-type-card {
  padding: 24px 20px;
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.test-type-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(255,107,43,0.15);
  border-color: rgba(255,107,43,0.3);
}

.test-type-icon { font-size: 36px; }
.test-type-name { font-family: var(--font-display); font-weight: 700; font-size: 15px; }
.test-type-desc { font-size: 12px; color: var(--text-muted); }

.test-config {
  padding: 24px;
  margin-top: 4px;
}

.config-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
}

.config-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.config-field { display: flex; flex-direction: column; gap: 6px; }

.config-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.config-input, .config-select {
  padding: 10px 12px;
  background: var(--bg-tertiary);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 14px;
  font-family: var(--font-body);
  outline: none;
  transition: border-color var(--transition);
}

.config-input:focus, .config-select:focus { border-color: var(--saffron); }

.config-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
}

.btn-cancel {
  padding: 10px 20px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-body);
  transition: all var(--transition);
}

.btn-cancel:hover { color: var(--text-primary); background: var(--glass-hover); }

.btn-start-test {
  padding: 10px 24px;
  background: linear-gradient(135deg, var(--saffron), var(--saffron-light));
  border: none;
  border-radius: 8px;
  color: white;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  font-family: var(--font-body);
  transition: all var(--transition);
  box-shadow: 0 4px 16px var(--saffron-glow);
}

.btn-start-test:hover { transform: translateY(-1px); box-shadow: 0 6px 24px var(--saffron-glow); }

/* ─── EXAM INTERFACE ─── */
.exam-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  margin-bottom: 16px;
  position: sticky;
  top: 0;
  z-index: 10;
  gap: 12px;
}

.exam-info { display: flex; flex-direction: column; gap: 2px; }
.exam-title { font-family: var(--font-display); font-weight: 700; font-size: 16px; }
.exam-qcount { font-size: 12px; color: var(--text-muted); font-family: var(--font-mono); }

.exam-timer {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(255,107,43,0.1);
  border: 1px solid rgba(255,107,43,0.3);
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--saffron);
}

.exam-timer svg { width: 16px; height: 16px; stroke: var(--saffron); fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

.exam-timer.warning { color: #E74C3C; border-color: rgba(231,76,60,0.5); background: rgba(231,76,60,0.1); animation: pulse 1s infinite; }

@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.6; } }

.exam-actions { display: flex; gap: 8px; }

.btn-pause, .btn-submit-exam {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  font-family: var(--font-body);
  transition: all var(--transition);
}

.btn-pause {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
}

.btn-submit-exam {
  background: linear-gradient(135deg, var(--saffron), var(--saffron-light));
  border: none;
  color: white;
}

.btn-submit-exam.full-width { width: 100%; margin-top: 12px; padding: 12px; }

.exam-body {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 16px;
  align-items: start;
}

.exam-question-area {
  padding: 24px;
  min-height: 400px;
}

.exam-palette-panel {
  padding: 16px;
  position: sticky;
  top: 80px;
}

.palette-title {
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 12px;
}

.palette-legend {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.legend-item {
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}

.legend-item.answered { background: rgba(0,217,163,0.15); color: var(--jade); }
.legend-item.review { background: rgba(255,193,7,0.15); color: #F39C12; }
.legend-item.skipped { background: var(--bg-tertiary); color: var(--text-muted); }

.palette-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
}

.palette-btn {
  width: 36px; height: 36px;
  border-radius: 6px;
  background: var(--bg-tertiary);
  border: 1px solid var(--glass-border);
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.palette-btn:hover { border-color: var(--saffron); color: var(--saffron); }
.palette-btn.current { border-color: var(--saffron); background: var(--saffron); color: white; }
.palette-btn.answered { background: rgba(0,217,163,0.2); border-color: var(--jade); color: var(--jade); }
.palette-btn.review { background: rgba(255,193,7,0.2); border-color: #F39C12; color: #F39C12; }

/* Section grouping (full mock): full-width label above each section's block. */
.palette-section-label {
  grid-column: 1 / -1;
  font-size: 11px;
  font-weight: 700;
  color: var(--saffron);
  margin: 10px 0 2px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--glass-border);
}
.palette-section-label:first-child { margin-top: 0; }

.exam-section-banner {
  font-size: 13px;
  font-weight: 700;
  color: var(--saffron);
  background: rgba(255,107,43,0.08);
  border: 1px solid rgba(255,107,43,0.2);
  border-radius: 8px;
  padding: 8px 14px;
  margin-bottom: 14px;
}

/* ─── RESULT PANEL ─── */
.result-hero {
  padding: 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  margin-bottom: 16px;
}

.result-score-ring {
  position: relative;
  width: 120px; height: 120px;
}

.result-score-ring svg { transform: rotate(-90deg); }
.ring-bg { fill: none; stroke: var(--bg-tertiary); stroke-width: 8; }
.ring-fill { fill: none; stroke: url(#resultGradient); stroke-width: 8; stroke-linecap: round; transition: stroke-dashoffset 1.5s cubic-bezier(0.4,0,0.2,1); }

.ring-text {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.ring-score {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 800;
  color: var(--text-primary);
}

.ring-label { font-size: 11px; color: var(--text-muted); }

.result-stats-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}

.result-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 12px 16px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  min-width: 80px;
}

.result-stat-val { font-family: var(--font-mono); font-size: 20px; font-weight: 700; }
.result-stat-label { font-size: 11px; color: var(--text-muted); }

/* ─── REVISION ─── */
.revision-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
}

.revision-card {
  padding: 24px 20px;
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.revision-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(255,107,43,0.12);
}

.rev-icon { font-size: 32px; }
.rev-title { font-weight: 700; font-size: 14px; }
.rev-count { font-size: 12px; color: var(--text-muted); }

/* ─── ANALYTICS ─── */
.analytics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.analytics-card {
  padding: 20px;
}

.analytics-card.span-2 { grid-column: span 2; }

.chart-title {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
}

.heatmap-grid {
  display: grid;
  grid-template-columns: repeat(52, 1fr);
  gap: 2px;
}

.heatmap-cell {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 2px;
  background: var(--bg-tertiary);
}

.heatmap-cell[data-level="1"] { background: rgba(255,107,43,0.2); }
.heatmap-cell[data-level="2"] { background: rgba(255,107,43,0.4); }
.heatmap-cell[data-level="3"] { background: rgba(255,107,43,0.7); }
.heatmap-cell[data-level="4"] { background: var(--saffron); }

.weak-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.weak-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background: var(--bg-tertiary);
  border-radius: 8px;
  font-size: 13px;
}

.weak-pct { font-family: var(--font-mono); color: #E74C3C; font-weight: 700; }
.weak-empty { font-size: 13px; color: var(--text-muted); }

.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
  gap: 12px;
}

.achievement {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding: 14px 8px 12px;
  border-radius: 14px;
  background: var(--bg-tertiary);
  border: 1px solid rgba(255,255,255,0.05);
  text-align: center;
  transition: transform .2s ease, box-shadow .2s ease;
  overflow: hidden;
}
.achievement:hover { transform: translateY(-2px); }

.achievement-icon {
  font-size: 28px;
  line-height: 1;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.25));
}
.achievement-name { font-size: 11px; font-weight: 600; color: var(--text-secondary); line-height: 1.25; }
.achievement-sub { font-size: 9.5px; color: var(--text-muted); opacity: .85; line-height: 1.2; }
.achievement-date { font-size: 8.5px; color: var(--saffron, #FF6B2B); opacity: .85; font-weight: 600; }

.achievement.locked {
  background: var(--bg-tertiary);
  opacity: 0.55;
}
.achievement.locked .achievement-icon { filter: grayscale(1) opacity(.6); }
.achievement.locked .achievement-name { color: var(--text-muted); }

.achievement:not(.locked) {
  background: linear-gradient(160deg, rgba(255,107,43,0.16), rgba(255,107,43,0.04) 60%), var(--bg-tertiary);
  border-color: rgba(255,107,43,0.35);
  box-shadow: 0 4px 14px rgba(255,107,43,0.12), inset 0 0 0 1px rgba(255,107,43,0.18);
}
.achievement:not(.locked)::before {
  content: '';
  position: absolute; top: -40%; left: -40%; width: 60%; height: 220%;
  background: linear-gradient(115deg, transparent, rgba(255,255,255,0.18), transparent);
  transform: rotate(20deg);
  pointer-events: none;
}

.achievement-progress {
  width: 100%; height: 4px; border-radius: 4px; background: rgba(255,255,255,0.08);
  margin-top: 2px; overflow: hidden;
}
.achievement-progress-fill {
  height: 100%; border-radius: 4px;
  background: linear-gradient(90deg, var(--saffron, #FF6B2B), var(--saffron-light, #FF8C55));
}

/* ─── ACHIEVEMENTS PAGE ─── */
.ach-section { padding: 18px 20px; border-radius: var(--radius, 16px); margin-bottom: 18px; }
.ach-section .chart-title { margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }

.ach-overview {
  display: flex; align-items: center; gap: 18px; padding: 20px;
  border-radius: var(--radius, 16px); margin-bottom: 18px;
  background: linear-gradient(135deg, rgba(255,107,43,0.14), rgba(255,107,43,0.02));
  border: 1px solid rgba(255,107,43,0.18);
}
.ach-overview-ring {
  position: relative; width: 72px; height: 72px; flex-shrink: 0;
}
.ach-overview-ring svg { transform: rotate(-90deg); }
.ach-overview-ring-bg { fill: none; stroke: rgba(255,255,255,0.08); stroke-width: 6; }
.ach-overview-ring-fill { fill: none; stroke: var(--saffron, #FF6B2B); stroke-width: 6; stroke-linecap: round; transition: stroke-dashoffset .6s ease; }
.ach-overview-ring-label {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 700; color: var(--text-primary);
}
.ach-overview-text { display: flex; flex-direction: column; gap: 2px; }
.ach-overview-title { font-family: var(--font-display, inherit); font-size: 17px; font-weight: 700; color: var(--text-primary); }
.ach-overview-sub { font-size: 12.5px; color: var(--text-muted); }

.ach-cert-list { display: flex; flex-direction: column; gap: 10px; }
.ach-cert-item {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 14px 16px; border-radius: 12px;
  background: linear-gradient(135deg, rgba(255,107,43,0.08), var(--bg-tertiary) 70%);
  border: 1px solid rgba(255,107,43,0.15);
}
.ach-cert-info { display: flex; align-items: center; gap: 12px; min-width: 0; }
.ach-cert-icon {
  font-size: 22px; width: 44px; height: 44px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; border-radius: 10px;
  background: linear-gradient(135deg, var(--saffron, #FF6B2B), var(--saffron-light, #FF8C55));
  box-shadow: 0 4px 12px var(--saffron-glow, rgba(255,107,43,0.25));
}
.ach-cert-title { font-size: 14px; font-weight: 700; color: var(--text-primary); }
.ach-cert-line { font-size: 12px; color: var(--text-muted); }
.ach-cert-empty { font-size: 13px; color: var(--text-muted); padding: 16px 2px; text-align: center; }

/* ─── HOME ACHIEVEMENTS STRIP ─── */
.ach-strip {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  padding: 14px 18px; border-radius: var(--radius, 16px); margin: 16px 0; cursor: pointer;
  background: linear-gradient(135deg, rgba(255,107,43,0.12), rgba(255,107,43,0.02));
  border: 1px solid rgba(255,107,43,0.18);
  transition: transform .2s ease, box-shadow .2s ease;
}
.ach-strip:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(255,107,43,0.12); }
.ach-strip-left { display: flex; flex-direction: column; }
.ach-strip-count { font-family: var(--font-display, inherit); font-size: 19px; font-weight: 700; color: var(--saffron, #FF6B2B); }
.ach-strip-label { font-size: 11px; color: var(--text-muted); }
.ach-strip-icons { display: flex; gap: 6px; font-size: 22px; }
.ach-strip-icons span {
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.25));
}
.ach-strip-empty { font-size: 12px; color: var(--text-muted); }
.ach-strip-btn {
  margin-left: auto; background: transparent; border: none; cursor: pointer;
  color: var(--saffron, #FF6B2B); font-size: 13px; font-weight: 600;
}

/* ─── BADGE UNLOCK CELEBRATION ─── */
.ach-pop { text-align: center; padding: 4px; }
.ach-pop-title { font-family: var(--font-display, inherit); font-size: 20px; font-weight: 700; margin-bottom: 14px; }
.ach-pop-grid { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-bottom: 12px; }
.ach-pop-badge {
  display: flex; flex-direction: column; align-items: center; gap: 4px; width: 84px;
  padding: 12px 8px; border-radius: 12px; background: var(--bg-tertiary);
  animation: achPopIn .5s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}
.ach-pop-icon { font-size: 34px; }
.ach-pop-name { font-size: 11px; color: var(--text-secondary); line-height: 1.2; }
.ach-pop-sub { font-size: 13px; color: var(--text-secondary); margin-bottom: 12px; }
@keyframes achPopIn { from { transform: scale(.4); opacity: 0; } to { transform: scale(1); opacity: 1; } }
@media (prefers-reduced-motion: reduce) { .ach-pop-badge { animation: none; } }

/* ─── BOOKMARKS ─── */
.question-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

.q-card {
  padding: 16px;
  border-radius: var(--radius);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  cursor: pointer;
  transition: transform 0.35s cubic-bezier(0.34,1.56,0.64,1), box-shadow 0.35s cubic-bezier(0.34,1.56,0.64,1), border-color 0.35s cubic-bezier(0.34,1.56,0.64,1);
}

.q-card:hover {
  transform: translateY(-3px) scale(1.01);
  box-shadow: 0 12px 36px rgba(255,107,43,0.12);
  border-color: rgba(255,107,43,0.3);
}
.q-card:active { transform: translateY(-1px) scale(1.005); }

/* ─── SEARCH PAGE ─── */
.search-hero { margin-bottom: 24px; }

.search-big-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  margin-bottom: 16px;
}

.search-big-wrap svg { width: 20px; height: 20px; stroke: var(--text-muted); fill: none; stroke-width: 2; stroke-linecap: round; flex-shrink: 0; }

.search-big-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  font-size: 18px;
  color: var(--text-primary);
  font-family: var(--font-body);
}

.search-big-input::placeholder { color: var(--text-muted); }

.search-filters { display: flex; gap: 8px; flex-wrap: wrap; }

.search-chip {
  padding: 6px 14px;
  border-radius: 20px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-body);
}

.search-chip:hover, .search-chip.active {
  background: rgba(255,107,43,0.1);
  border-color: rgba(255,107,43,0.4);
  color: var(--saffron);
}

.search-results { display: flex; flex-direction: column; gap: 10px; }
.search-result-item {
  padding: 16px;
  border-radius: var(--radius-sm);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  cursor: pointer;
  transition: all var(--transition);
}

.search-result-item:hover { border-color: rgba(255,107,43,0.3); transform: translateX(4px); }

.search-placeholder { text-align: center; padding: 60px 20px; color: var(--text-muted); }

/* ─── TOAST ─── */
.toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 0;
  font-size: 13px;
  font-weight: 600;
  z-index: 999;
  opacity: 0;
  transition: opacity 0.35s cubic-bezier(0.34,1.56,0.64,1), transform 0.35s cubic-bezier(0.34,1.56,0.64,1);
  pointer-events: none;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
  min-width: 180px;
}

.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); pointer-events: auto; }
.toast.success { border-color: var(--jade); color: var(--jade); box-shadow: 0 0 20px var(--jade-glow), 0 8px 32px rgba(0,0,0,0.3); }
.toast.error { border-color: var(--danger); color: var(--danger); box-shadow: 0 0 20px rgba(231,76,60,0.3), 0 8px 32px rgba(0,0,0,0.3); }

.toast-text { display: block; padding: 12px 20px; }

.toast-progress {
  height: 3px;
  background: var(--saffron);
  width: 100%;
  transform-origin: left;
  transition: transform 3s linear;
  border-radius: 0 0 12px 12px;
}
.toast.show .toast-progress {
  transform: scaleX(0);
}
.toast.success .toast-progress { background: var(--jade); }
.toast.error .toast-progress { background: var(--danger); }

[data-theme="light"] .toast,
[data-effective-theme="light"] .toast {
  background: rgba(240,239,248,0.95);
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
}

/* ─── MODAL ─── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(8px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

.modal-overlay.open { opacity: 1; pointer-events: all; }

.modal {
  padding: 28px;
  max-width: 480px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  animation: modalIn 0.3s ease;
}

@keyframes modalIn {
  from { transform: scale(0.95) translateY(10px); opacity: 0; }
  to { transform: scale(1) translateY(0); opacity: 1; }
}

/* ─── LOADING ─── */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  transition: opacity 0.5s ease;
}

.loading-overlay.hidden { opacity: 0; pointer-events: none; }

.loading-spinner {
  width: 48px; height: 48px;
  border: 3px solid var(--bg-tertiary);
  border-top-color: var(--saffron);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.loading-text { font-size: 14px; color: var(--text-muted); }

.loading-logo { border-radius: 18px; margin-bottom: 4px; box-shadow: 0 8px 24px rgba(22,41,74,0.4); }

.loading-tagline {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  margin-top: -6px;
}
.loading-tagline-en {
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 2px;
  color: var(--text-dim, var(--text-muted));
  opacity: 0.8;
}

.loading-state {
  padding: 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
}

/* ─── BOTTOM NAV ─── */
.bottom-nav {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: var(--bottom-nav-h);
  background: var(--bg-secondary);
  backdrop-filter: blur(10px) saturate(1.3); /* fixed nav over scrolling content — was 24px, too costly to composite every scroll frame on low-end GPUs */
  -webkit-backdrop-filter: blur(10px) saturate(1.3);
  border-top: 1px solid var(--glass-border);
  z-index: 90;
  align-items: center;
  justify-content: space-around;
  padding: 0 4px;
}

.bn-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 6px 12px;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 10px;
  font-weight: 600;
  transition: all var(--transition);
  text-decoration: none;
  border-radius: 10px;
  user-select: none;
  position: relative;
}

.bn-item svg { width: 20px; height: 20px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; transition: all var(--transition); }
.bn-item.active { color: var(--saffron); animation: navPop 0.4s cubic-bezier(0.34,1.56,0.64,1); }
.bn-item.active svg { filter: drop-shadow(0 0 8px var(--saffron-glow)); transform: scale(1.1); }
.bn-item.active::after {
  content: '';
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: var(--saffron);
  box-shadow: 0 0 12px var(--saffron-glow);
  animation: bnGlow 2s ease-in-out infinite;
}
@keyframes bnGlow {
  0%, 100% { box-shadow: 0 0 8px var(--saffron-glow); opacity: 1; }
  50% { box-shadow: 0 0 20px var(--saffron-glow), 0 0 40px rgba(255,107,43,0.15); opacity: 0.9; }
}
.bn-item:hover { color: var(--text-primary); transform: translateY(-3px); }
.bn-item:active { transform: translateY(0); }

/* ─── RESPONSIVE ─── */
/* ─── WIDE DESKTOP: use the extra space without sprawling ─── */
@media (min-width: 1440px) {
  .page { max-width: 1320px; }
  .main { padding: 40px 48px; }
  /* Keep exam question text at a comfortable reading measure, not full-card. */
  .exam-question-area p { max-width: 820px; }
}

@media (max-width: 1024px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .analytics-grid { grid-template-columns: 1fr; }
  .analytics-card.span-2 { grid-column: span 1; }
  .main { padding: 28px; }
}

@media (max-width: 768px) {
  .sidebar { transform: translateX(calc(-1 * var(--sidebar-width))); }
  .sidebar.open { transform: translateX(0); box-shadow: 4px 0 48px rgba(0,0,0,0.5); }
  .sidebar.open ~ .exam-switcher { display: none; }
  .topbar { display: flex; }
  .bottom-nav { display: flex; }
  .exam-switcher {
    position: fixed;
    top: var(--topbar-h);
    left: 0;
    right: 0;
    bottom: auto;
    width: auto;
    z-index: 185;
    padding: 6px 16px;
    background: transparent;
    border: none;
  }
  .main {
    margin-left: 0;
    padding: 16px;
    padding-top: calc(var(--topbar-h) + var(--exam-switcher-h));
    padding-bottom: calc(var(--bottom-nav-h) + 20px);
    max-width: 100vw;
  }
  .page-title { font-size: 22px; }
  .page-header { margin-bottom: 20px; }
  .section-title { font-size: 16px; margin: 22px 0 12px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .stat-card { padding: 16px; }
  .stat-value { font-size: 24px; }
  .study-layout { grid-template-columns: 1fr; height: auto; gap: 0; }
  .exam-body { grid-template-columns: 1fr; }
  .exam-palette-panel { position: static; }
  .heatmap-grid { grid-template-columns: repeat(26, 1fr); }
  .subject-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .subject-card { padding: 16px; }
  .toast { bottom: calc(var(--bottom-nav-h) + 16px); }
  .sidebar-overlay.open { display: block; animation: overlayIn 0.3s ease; }
  @keyframes overlayIn { from { opacity: 0; } to { opacity: 1; } }
  .quick-actions { gap: 10px; }
  .action-btn { padding: 10px 16px; font-size: 13px; }
  .test-types-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .exam-header { padding: 10px 16px; flex-wrap: wrap; }
  .exam-timer { font-size: 15px; padding: 6px 12px; }
}

@media (max-width: 480px) {
  .main { padding: 12px; padding-top: calc(var(--topbar-h) + var(--exam-switcher-h)); padding-bottom: calc(var(--bottom-nav-h) + 16px); }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
  .stat-value { font-size: 20px; }
  .stat-card { padding: 14px; }
  .stat-icon { font-size: 20px; }
  .quick-actions { flex-direction: column; }
  .action-btn { width: 100%; justify-content: center; }
  .subject-grid { grid-template-columns: 1fr; }
  .test-types-grid { grid-template-columns: 1fr; }
  .page-title { font-size: 20px; }
  .subject-card { padding: 14px; }
  .exam-header { flex-direction: column; align-items: stretch; }
  .exam-timer { align-self: flex-start; }
  .exam-actions { flex-direction: row; }
  .streak-badge { font-size: 11px; padding: 6px 10px; }
}

/* ─── SIDEBAR OVERLAY (mobile) ─── */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 99;
}

.sidebar-overlay.open { display: block; }

/* ─── SVG GRADIENT FOR RING ─── */
svg defs { display: none; }

/* ─── UTILITY ─── */
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }
.mt-4 { margin-top: 16px; }
.mb-4 { margin-bottom: 16px; }

/* ═══════════════════════════════════════════
   AI DOUBT SOLVER STYLES
═══════════════════════════════════════════ */

/* Ask AI Button */
.btn-ask-ai {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: linear-gradient(135deg, #4285F4, #0F52BA);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  margin-top: 12px;
  width: 100%;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.btn-ask-ai::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.btn-ask-ai:hover::before { opacity: 1; }
.btn-ask-ai:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(66,133,244,0.4); }
.btn-ask-ai:active { transform: translateY(0); }

.btn-ask-ai .ai-gemini-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* AI Settings button in sidebar */
.ai-settings-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: linear-gradient(135deg, rgba(66,133,244,0.15), rgba(15,82,186,0.15));
  border: 1px solid rgba(66,133,244,0.3);
  border-radius: var(--radius-sm);
  color: #4285F4;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-body);
  transition: all var(--transition);
  width: 100%;
}

.ai-settings-btn:hover {
  background: linear-gradient(135deg, rgba(66,133,244,0.25), rgba(15,82,186,0.25));
}

/* AI Modal */
.ai-modal {
  padding: 4px 0;
  min-width: 0;
}

.ai-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--glass-border);
}

.ai-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  background: linear-gradient(135deg, #4285F4, #0F52BA);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.ai-badge svg { stroke: #4285F4; flex-shrink: 0; }

.ai-close-btn {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  border-radius: 8px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 14px;
  transition: all var(--transition);
}

.ai-close-btn:hover { background: rgba(231,76,60,0.1); color: #E74C3C; border-color: #E74C3C; }

/* Question preview in modal */
.ai-question-preview {
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  padding: 12px;
  margin-bottom: 16px;
  border-left: 3px solid #4285F4;
}

.ai-question-preview p {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-primary);
  margin-bottom: 8px;
}

/* Loading state */
.ai-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  gap: 12px;
}

.ai-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--glass-border);
  border-top-color: #4285F4;
  border-radius: 50%;
  animation: aiSpin 0.8s linear infinite;
}

@keyframes aiSpin { to { transform: rotate(360deg); } }

.ai-loading-text {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.ai-loading-sub {
  font-size: 12px;
  color: var(--text-muted);
}

/* AI Response */
.ai-response {
  max-height: 50vh;
  overflow-y: auto;
  padding-right: 4px;
  line-height: 1.7;
}

.ai-response p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 6px;
  padding-left: 4px;
}

.ai-section {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  margin: 10px 0 6px;
  font-size: 14px;
  font-weight: 600;
}

.ai-section.success {
  background: rgba(0,217,163,0.1);
  border-left: 3px solid var(--jade);
  color: var(--jade);
}

.ai-section.info {
  background: rgba(66,133,244,0.1);
  border-left: 3px solid #4285F4;
  color: #4285F4;
}

.ai-section.shortcut {
  background: rgba(255,107,43,0.1);
  border-left: 3px solid var(--saffron);
  color: var(--saffron);
}

.ai-section.warning {
  background: rgba(231,76,60,0.1);
  border-left: 3px solid #E74C3C;
  color: #E74C3C;
}

/* Actions row */
.ai-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--glass-border);
}

.ai-copy-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-body);
}

.ai-copy-btn:hover { background: var(--glass-hover); color: var(--text-primary); }

/* Error state */
.ai-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 30px 16px;
  gap: 8px;
  text-align: center;
}

.ai-error-icon { font-size: 36px; }

.ai-error p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* API Key Setup steps */
.ai-steps {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.ai-step {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.ai-step-num {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, #4285F4, #0F52BA);
  color: white;
  font-size: 11px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
}

/* ─── Option A — Redirect guide styles ─── */
.ai-copy-success {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(0,217,163,0.1);
  border: 1px solid rgba(0,217,163,0.3);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
}

.ai-copy-check {
  font-size: 22px;
  flex-shrink: 0;
}

.ai-copy-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--jade);
  margin-bottom: 2px;
}

.ai-copy-sub {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.ai-redirect-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.ai-redirect-step {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--glass-border);
  position: relative;
}

.ai-redirect-step:last-child { border-bottom: none; }

.ai-redirect-step.done .ai-redirect-icon {
  background: rgba(0,217,163,0.15);
  border-color: rgba(0,217,163,0.4);
  color: var(--jade);
}

.ai-redirect-icon {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--bg-tertiary);
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
}

.ai-rs-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.ai-rs-sub {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ─── Option tabs in setup modal ─── */
.ai-option-tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 16px;
  background: var(--bg-tertiary);
  padding: 4px;
  border-radius: 10px;
}

.ai-option-tab {
  flex: 1;
  padding: 8px 6px;
  background: none;
  border: none;
  border-radius: 8px;
  font-size: 11px;
  font-weight: 600;
  font-family: var(--font-body);
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
  line-height: 1.3;
}

.ai-option-tab.active {
  background: linear-gradient(135deg, #4285F4, #0F52BA);
  color: white;
}

.ai-tab-panel { animation: fadeIn 0.2s ease; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }

/* ─── Mini redirect button (in error states) ─── */
.ai-redirect-mini-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: rgba(66,133,244,0.1);
  border: 1px solid rgba(66,133,244,0.3);
  border-radius: 8px;
  color: #4285F4;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-body);
  transition: all var(--transition);
}

.ai-redirect-mini-btn:hover { background: rgba(66,133,244,0.2); }

/* ═══════════════════════════════════════════
   USER PROFILE + ADMIN + VOICE + NOTES + PDF
═══════════════════════════════════════════ */

/* ─── User Profile Strip ─── */
/* Top-right sign-in pill on the home page header (above the streak badge) */
.home-header-right { display: flex; flex-direction: column; align-items: flex-end; gap: 8px; }

.user-profile-strip {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  background: var(--saffron);
  border: 1px solid var(--saffron);
  border-radius: 20px;
  cursor: pointer;
  transition: all var(--transition);
}

/* ─── Quick menu (colour mode / account & settings / sign out) ─── */
.quick-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 200px;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  box-shadow: 0 12px 32px rgba(0,0,0,0.28);
  padding: 6px;
  z-index: 200;
  animation: quickMenuIn 0.15s ease;
}
@keyframes quickMenuIn { from { opacity:0; transform:translateY(-6px); } to { opacity:1; transform:translateY(0); } }
.quick-menu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  background: none;
  border: none;
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
}
.quick-menu-item:hover { background: var(--bg-tertiary); }
.quick-menu-item.danger { color: #E74C3C; }

/* ─── Premium Google sign-in CTA ─── */
.btn-google {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 10px 22px;
  background: #fff;
  border: 1px solid #dadce0;
  border-radius: 20px;
  color: #3c4043;
  font-family: var(--font-body);
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(0,0,0,0.12);
  transition: box-shadow 0.15s ease, transform 0.1s ease;
}
.btn-google:hover { box-shadow: 0 4px 12px rgba(0,0,0,0.18); transform: translateY(-1px); }
.btn-google:active { transform: translateY(0); box-shadow: 0 1px 2px rgba(0,0,0,0.12); }

/* ─── Account & Settings page ─── */
.account-profile-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--bg-secondary);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 14px;
}
.account-avatar {
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--bg-tertiary);
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; overflow: hidden; flex-shrink: 0;
}
.account-identity { flex: 1; min-width: 0; }
.account-name { font-family: var(--font-display); font-size: 16px; font-weight: 800; color: var(--text-primary); }
.account-email { font-size: 12px; color: var(--text-muted); margin: 2px 0 6px; }
.account-level-badge {
  display: inline-block; font-size: 11px; font-weight: 700;
  padding: 3px 10px; border-radius: 20px;
  background: rgba(255,107,43,0.14); color: var(--saffron);
}

.reputation-card {
  background: var(--bg-secondary);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 14px;
}
.reputation-top { display: flex; justify-content: space-between; font-size: 13px; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
.reputation-pts { color: var(--saffron); }
.reputation-bar { height: 8px; border-radius: 8px; background: var(--bg-tertiary); overflow: hidden; }
.reputation-fill { height: 100%; background: linear-gradient(90deg, var(--saffron), var(--saffron-light)); border-radius: 8px; transition: width 0.4s ease; }
.reputation-bottom { display: flex; justify-content: space-between; font-size: 11px; color: var(--text-muted); margin-top: 6px; }

.pref-card {
  background: var(--bg-secondary);
  border-radius: var(--radius);
  padding: 8px 16px;
  margin-bottom: 14px;
}
.pref-card-title { font-size: 12px; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.04em; padding: 10px 0 4px; }
.pref-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 0;
  border-top: 1px solid var(--glass-border);
}
.pref-row-title { font-size: 14px; font-weight: 700; color: var(--text-primary); }
.pref-row-sub { font-size: 11px; color: var(--text-muted); margin-top: 2px; }

.exam-mini-switch { display: flex; gap: 6px; }
.exam-mini-btn {
  padding: 6px 12px; border-radius: 8px; border: 1px solid var(--glass-border);
  background: var(--bg-tertiary); color: var(--text-secondary); font-size: 12px; font-weight: 700; cursor: pointer;
}
.exam-mini-btn.active { background: var(--saffron); border-color: var(--saffron); color: #fff; }

/* iOS-style toggle */
.pref-switch {
  position: relative;
  width: 42px; height: 24px;
  border-radius: 24px;
  background: var(--bg-tertiary);
  border: 1px solid var(--glass-border);
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.2s ease;
}
.pref-switch-knob {
  position: absolute; top: 2px; left: 2px;
  width: 18px; height: 18px; border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
  transition: transform 0.2s ease;
}
.pref-switch.on { background: var(--saffron); border-color: var(--saffron); }
.pref-switch.on .pref-switch-knob { transform: translateX(18px); }

.danger-row {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--bg-secondary);
  border: 1px solid rgba(231,76,60,0.3);
  border-radius: var(--radius);
  padding: 14px 16px;
  cursor: pointer;
}
.user-profile-strip:hover { background: var(--saffron-light); transform: translateY(-1px); }
.user-avatar-sm { font-size: 16px; line-height: 1; }
.user-name-sm { font-size: 13px; font-weight: 700; color: #fff; white-space: nowrap; }

/* Once signed in, the pill becomes a neutral profile chip instead of a CTA */
.user-profile-strip.signed-in { background: var(--glass-bg); border-color: var(--glass-border); }
.user-profile-strip.signed-in .user-name-sm { color: var(--text-primary); }
.user-profile-strip.signed-in:hover { background: var(--glass-hover); }

@media (max-width: 480px) {
  .user-name-sm { display: none; } /* avatar-only pill on very small screens */
}

/* ─── Onboarding Modal ─── */
.onboard-modal { padding: 4px 0; }
.onboard-header { text-align: center; margin-bottom: 20px; }
.onboard-logo { font-size: 48px; margin-bottom: 10px; }
.onboard-title { font-family: var(--font-display); font-size: 20px; font-weight: 800; }
.onboard-sub { font-size: 13px; color: var(--text-secondary); margin-top: 6px; line-height: 1.5; }
.onboard-avatar-section { margin-bottom: 4px; }
.avatar-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.avatar-btn {
  font-size: 24px;
  padding: 8px;
  border: 2px solid var(--glass-border);
  border-radius: 10px;
  background: var(--glass-bg);
  cursor: pointer;
  transition: all var(--transition);
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}
.avatar-btn:hover { border-color: var(--saffron); background: var(--glass-hover); }
.avatar-btn.selected { border-color: var(--jade); background: rgba(0,217,163,0.1); }

/* ─── Voice Search Button ─── */
.search-big-wrap { position: relative; display: flex; align-items: center; }
.voice-search-btn {
  position: absolute;
  right: 12px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  border-radius: 8px;
  color: var(--text-muted);
  transition: all var(--transition);
  display: flex;
  align-items: center;
}
.voice-search-btn svg { width: 20px; height: 20px; stroke: currentColor; }
.voice-search-btn:hover { color: var(--saffron); background: rgba(255,107,43,0.1); }
.voice-search-btn.listening {
  color: #E74C3C;
  background: rgba(231,76,60,0.15);
  animation: voicePulse 1s ease infinite;
}
@keyframes voicePulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.15); }
}
.search-big-input { padding-right: 44px !important; }

/* ─── Notes Page ─── */
.notes-tabs-row {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  background: var(--bg-tertiary);
  padding: 4px;
  border-radius: 12px;
}
.notes-tab {
  flex: 1;
  padding: 10px;
  border: none;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  background: none;
  color: var(--text-muted);
  transition: all var(--transition);
}
.notes-tab.active {
  background: linear-gradient(135deg, var(--saffron), #E55A1B);
  color: white;
}
.notes-chips-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.notes-subject-chip {
  padding: 6px 14px;
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  font-family: var(--font-body);
  cursor: pointer;
  background: var(--glass-bg);
  color: var(--text-secondary);
  transition: all var(--transition);
}
.notes-subject-chip.active { background: var(--saffron); border-color: var(--saffron); color: white; }
.notes-subject-chip:hover { background: var(--glass-hover); }

.notes-loading { display: flex; justify-content: center; padding: 40px; }

.notes-subject-block { margin-bottom: 16px; }
.notes-subject-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 15px;
  font-weight: 700;
  font-family: var(--font-display);
  transition: background var(--transition);
}
.notes-subject-header:hover { background: var(--bg-tertiary); }
.notes-count { margin-left: auto; font-size: 11px; color: var(--text-muted); font-family: var(--font-body); font-weight: 400; }
.notes-chevron { font-size: 12px; color: var(--text-muted); }
.notes-topics { padding: 10px 0 4px; }
.notes-topic-group { margin-bottom: 12px; }
.notes-topic-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--saffron);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 6px 0;
  border-bottom: 1px solid var(--glass-border);
  margin-bottom: 8px;
}

/* Note cards */
.note-card {
  padding: 14px 16px;
  margin-bottom: 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  transition: all var(--transition);
}
.note-card:hover { border-color: rgba(255,107,43,0.3); }
.note-question { font-size: 13px; line-height: 1.6; color: var(--text-primary); margin-bottom: 8px; }
.note-tip {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 12px;
  line-height: 1.5;
  margin-bottom: 6px;
}
.note-tip.shortcut { background: rgba(255,107,43,0.08); color: var(--saffron); }
.note-tip.warning { background: rgba(231,76,60,0.08); color: #E74C3C; }
.note-tip-icon { flex-shrink: 0; }
.note-meta { display: flex; gap: 6px; margin-top: 8px; }

/* User note cards */
.note-card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.note-subject-tag { font-size: 11px; font-weight: 600; color: var(--saffron); background: rgba(255,107,43,0.1); padding: 3px 8px; border-radius: 6px; }
.note-card-actions { display: flex; gap: 4px; }
.note-action-btn {
  padding: 4px 8px;
  border: 1px solid var(--glass-border);
  border-radius: 6px;
  background: var(--glass-bg);
  cursor: pointer;
  font-size: 13px;
  transition: all var(--transition);
}
.note-action-btn.edit:hover { background: rgba(66,133,244,0.1); border-color: #4285F4; }
.note-action-btn.delete:hover { background: rgba(231,76,60,0.1); border-color: #E74C3C; }
.note-title { font-size: 14px; font-weight: 700; color: var(--text-primary); margin-bottom: 6px; }
.note-content { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }
.note-date { font-size: 10px; color: var(--text-muted); margin-top: 8px; }

/* Note add form */
.note-add-form { padding: 16px; margin-bottom: 16px; }
.note-form-title { font-size: 14px; font-weight: 700; margin-bottom: 12px; }
.note-form-fields { display: flex; flex-direction: column; gap: 8px; margin-bottom: 12px; }
.note-textarea {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-tertiary);
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 13px;
  resize: vertical;
  min-height: 90px;
  outline: none;
  transition: border-color var(--transition);
}
.note-textarea:focus { border-color: var(--saffron); }
.note-form-actions { display: flex; gap: 8px; justify-content: flex-end; }

/* ─── Admin Panel ─── */
.admin-stats-row { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; margin-bottom: 20px; }
.admin-stat { padding: 16px; text-align: center; border-radius: var(--radius-sm); }
.admin-stat-val { font-family: var(--font-display); font-size: 28px; font-weight: 800; color: var(--saffron); }
.admin-stat-lbl { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

.admin-tabs { display: flex; gap: 6px; margin-bottom: 16px; flex-wrap: wrap; }
.admin-tab {
  padding: 8px 16px;
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  background: var(--glass-bg);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-body);
  transition: all var(--transition);
}
.admin-tab.active { background: var(--saffron); border-color: var(--saffron); color: white; }
.admin-tab-content { animation: fadeIn 0.2s ease; }

.admin-q-item {
  padding: 12px 16px;
  margin-bottom: 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--glass-border);
}
.admin-q-meta { display: flex; gap: 6px; margin-bottom: 6px; flex-wrap: wrap; }
.admin-q-text { font-size: 13px; color: var(--text-primary); line-height: 1.5; margin-bottom: 8px; }
.admin-q-actions { display: flex; gap: 6px; }

/* ═══════════════════════════════════════════
   VOICE TUTOR + TTS STYLES
═══════════════════════════════════════════ */

/* ─── TTS Mute button (sidebar) ─── */
.tts-mute-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  background: var(--glass-bg);
  cursor: pointer;
  color: var(--text-muted);
  transition: all var(--transition);
  flex-shrink: 0;
}
.tts-mute-btn svg { width: 16px; height: 16px; stroke: currentColor; }
.tts-mute-btn:hover { background: var(--glass-hover); color: var(--saffron); }

/* ─── Tutorial Overlay ─── */
.tutor-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.72);
  z-index: 9999;
  pointer-events: auto;
}

/* Spotlight cutout */
.tutor-spotlight {
  position: fixed;
  border-radius: 12px;
  box-shadow:
    0 0 0 4px var(--saffron),
    0 0 0 9999px rgba(0,0,0,0.72);
  pointer-events: none;
  animation: spotlightPulse 2s ease infinite;
}
@keyframes spotlightPulse {
  0%, 100% { box-shadow: 0 0 0 4px var(--saffron), 0 0 0 9999px rgba(0,0,0,0.72); }
  50% { box-shadow: 0 0 0 6px rgba(255,107,43,0.7), 0 0 0 9999px rgba(0,0,0,0.72); }
}

/* Bubble */
.tutor-bubble {
  position: fixed;
  width: 320px;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
  animation: bubbleIn 0.3s cubic-bezier(0.34,1.56,0.64,1);
  z-index: 10000;
}
.tutor-bubble.centered {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
@keyframes bubbleIn {
  from { opacity: 0; transform: scale(0.85) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}
.tutor-bubble.has-target {
  /* Position set dynamically via JS */
}

/* Bubble top row */
.tutor-bubble-top {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}
.tutor-step-emoji { font-size: 22px; }
.tutor-progress {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  background: var(--bg-tertiary);
  padding: 3px 8px;
  border-radius: 10px;
}
.tutor-skip-btn {
  margin-left: auto;
  background: none;
  border: 1px solid var(--glass-border);
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 11px;
  padding: 3px 8px;
  cursor: pointer;
  font-family: var(--font-body);
  transition: all var(--transition);
}
.tutor-skip-btn:hover { border-color: #E74C3C; color: #E74C3C; }

.tutor-title {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.3;
}
.tutor-text {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

/* Progress dots */
.tutor-dots {
  display: flex;
  gap: 5px;
  justify-content: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.tutor-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--bg-tertiary);
  border: 1px solid var(--glass-border);
  transition: all 0.3s ease;
}
.tutor-dot.active {
  background: var(--saffron);
  border-color: var(--saffron);
  width: 20px;
  border-radius: 4px;
}
.tutor-dot.done {
  background: var(--jade);
  border-color: var(--jade);
}

/* Buttons */
.tutor-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}
.tutor-prev-btn {
  padding: 8px 14px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 13px;
  font-family: var(--font-body);
  cursor: pointer;
  transition: all var(--transition);
}
.tutor-prev-btn:hover { background: var(--glass-hover); }
.tutor-replay-btn {
  padding: 8px 10px;
  background: rgba(255,107,43,0.1);
  border: 1px solid rgba(255,107,43,0.3);
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
  transition: all var(--transition);
}
.tutor-replay-btn:hover { background: rgba(255,107,43,0.2); }
.tutor-next-btn {
  flex: 1;
  padding: 10px 14px;
  background: linear-gradient(135deg, var(--saffron), #E55A1B);
  border: none;
  border-radius: 8px;
  color: white;
  font-size: 14px;
  font-weight: 700;
  font-family: var(--font-body);
  cursor: pointer;
  transition: all var(--transition);
}
.tutor-next-btn:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(255,107,43,0.4); }

/* ─── Tutorial button in sidebar ─── */
.tutorial-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: rgba(255,107,43,0.08);
  border: 1px solid rgba(255,107,43,0.2);
  border-radius: var(--radius-sm);
  color: var(--saffron);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-body);
  transition: all var(--transition);
  width: 100%;
  text-align: left;
}
.tutorial-btn:hover { background: rgba(255,107,43,0.15); }

@media (max-width: 768px) {
  .tutor-bubble { width: calc(100vw - 32px); left: 16px !important; }
  .tutor-bubble.centered { left: 50% !important; transform: translate(-50%,-50%) !important; }
}

/* ═══════════════════════════════════════════
   STUDY MODE 3D REDESIGN + ANIMATIONS
═══════════════════════════════════════════ */

/* ─── Filter toggle button (mobile) ─── */
.study-filter-toggle-btn {
  display: none;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 600;
  font-family: var(--font-body);
  cursor: pointer;
  transition: all var(--transition);
}
.study-filter-toggle-btn svg { width: 14px; height: 14px; stroke: currentColor; fill: none; flex-shrink: 0; }
.study-filter-toggle-btn:hover { border-color: var(--saffron); color: var(--saffron); }

/* ─── Nav bar ─── */
.study-card-scene {
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow-y: auto;
  min-height: 0;
}

.study-nav-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  backdrop-filter: blur(12px);
}

.study-nav-btn {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid var(--glass-border);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  flex-shrink: 0;
}
.study-nav-btn svg { width: 16px; height: 16px; }
.study-nav-btn:hover:not(:disabled) {
  background: var(--saffron);
  border-color: var(--saffron);
  color: white;
  transform: scale(1.08);
}
.study-nav-btn:disabled { opacity: 0.3; cursor: not-allowed; transform: none; }

.study-nav-counter {
  flex: 1;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-primary);
  font-weight: 600;
}
.study-nav-sep { color: var(--text-muted); margin: 0 4px; }

/* ─── 3D Card ─── */
.study-3d-card {
  padding: 28px;
  transform-style: preserve-3d;
  transition:
    transform 0.12s ease,
    box-shadow 0.12s ease;
  transform-origin: center center;
  will-change: transform;
  position: relative;
  overflow-y: auto;
  min-height: 0;
  flex: 1;
}

/* Subtle depth gradient on card */
.study-3d-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(255,255,255,0.03) 0%,
    transparent 50%,
    rgba(0,0,0,0.04) 100%
  );
  border-radius: inherit;
  pointer-events: none;
}

.study-3d-card:hover {
  box-shadow:
    0 20px 60px rgba(0,0,0,0.35),
    0 4px 20px rgba(255,107,43,0.08),
    inset 0 1px 0 rgba(255,255,255,0.08);
}

/* ─── Slide animations ─── */
@keyframes slideInFromLeft {
  from { opacity: 0; transform: perspective(1000px) translateX(-40px) rotateY(8deg); }
  to   { opacity: 1; transform: perspective(1000px) translateX(0) rotateY(0); }
}
@keyframes slideInFromRight {
  from { opacity: 0; transform: perspective(1000px) translateX(40px) rotateY(-8deg); }
  to   { opacity: 1; transform: perspective(1000px) translateX(0) rotateY(0); }
}
@keyframes slideOutLeft {
  from { opacity: 1; transform: perspective(1000px) translateX(0); }
  to   { opacity: 0; transform: perspective(1000px) translateX(-40px) rotateY(8deg); }
}
@keyframes slideOutRight {
  from { opacity: 1; transform: perspective(1000px) translateX(0); }
  to   { opacity: 0; transform: perspective(1000px) translateX(40px) rotateY(-8deg); }
}

.study-3d-card.slide-in-left  { animation: slideInFromLeft 0.28s cubic-bezier(0.34,1.2,0.64,1) forwards; }
.study-3d-card.slide-in-right { animation: slideInFromRight 0.28s cubic-bezier(0.34,1.2,0.64,1) forwards; }
.study-3d-card.slide-out-left  { animation: slideOutLeft 0.18s ease forwards; }
.study-3d-card.slide-out-right { animation: slideOutRight 0.18s ease forwards; }

/* ─── Question writing animation ─── */
.qd-question-wrap {
  position: relative;
  margin-bottom: 20px;
}

.qd-pen-anim {
  position: absolute;
  top: -4px;
  right: 0;
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
}
.qd-pen-anim.writing {
  opacity: 1;
  animation: penFloat 1.2s ease infinite;
}
.qd-pen-svg {
  width: 22px;
  height: 22px;
  stroke: var(--saffron);
  filter: drop-shadow(0 0 6px rgba(255,107,43,0.5));
}
@keyframes penFloat {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  25%  { transform: translate(-4px, 2px) rotate(-3deg); }
  50%  { transform: translate(-8px, 1px) rotate(-2deg); }
  75%  { transform: translate(-12px, 3px) rotate(-4deg); }
}

/* Writing underline sweep */
.qd-question {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-primary);
  font-weight: 500;
  position: relative;
  min-height: 28px;
}
/* Blinking cursor while typewriter runs */
.qd-question::after {
  content: '|';
  color: var(--saffron);
  animation: cursorBlink 0.7s step-end infinite;
  font-weight: 300;
  margin-left: 1px;
}
.qd-question.done::after { display: none; }

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

/* ─── Option buttons — 3D press ─── */
.option-btn {
  position: relative;
  overflow: hidden;
  transform: translateZ(0);
  transition:
    background var(--transition),
    border-color var(--transition),
    transform 0.1s ease,
    box-shadow 0.1s ease;
}

.option-btn:hover:not(:disabled) {
  transform: translateY(-2px) translateZ(0);
  box-shadow: 0 6px 20px rgba(255,107,43,0.15);
}

.option-btn:active:not(:disabled) {
  transform: translateY(1px) scale(0.99) translateZ(0);
  box-shadow: none;
}

/* Ripple */
.option-ripple {
  position: absolute;
  width: 8px;
  height: 8px;
  background: rgba(255,107,43,0.35);
  border-radius: 50%;
  transform: translate(-50%, -50%) scale(0);
  animation: rippleOut 0.55s ease-out forwards;
  pointer-events: none;
}
@keyframes rippleOut {
  to { transform: translate(-50%, -50%) scale(30); opacity: 0; }
}

/* Correct pulse */
@keyframes correctPulse {
  0%   { box-shadow: 0 0 0 0 rgba(0,217,163,0.5); }
  40%  { box-shadow: 0 0 0 12px rgba(0,217,163,0); transform: translateY(-2px) scale(1.01); }
  100% { box-shadow: 0 0 0 0 rgba(0,217,163,0); transform: translateY(0) scale(1); }
}
.answer-correct-pulse { animation: correctPulse 0.55s ease forwards; }

/* Wrong shake */
@keyframes wrongShake {
  0%, 100% { transform: translateX(0); }
  15%  { transform: translateX(-8px) rotate(-1deg); }
  30%  { transform: translateX(8px) rotate(1deg); }
  45%  { transform: translateX(-6px); }
  60%  { transform: translateX(6px); }
  75%  { transform: translateX(-3px); }
}
.answer-wrong-shake { animation: wrongShake 0.5s ease; }

/* option-text for wrapping */
.option-text { flex: 1; line-height: 1.5; }

/* ─── Mobile nav ─── */
.study-mobile-nav {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  position: sticky;
  bottom: calc(var(--bottom-nav-h) + 12px);
  z-index: 10;
  backdrop-filter: blur(12px);
}

.study-mobile-nav-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: 12px;
  border: none;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
  flex-shrink: 0;
}
.study-mobile-nav-btn svg { width: 18px; height: 18px; }
.study-mobile-nav-btn.prev {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--glass-border);
}
.study-mobile-nav-btn.next {
  background: linear-gradient(135deg, var(--saffron), #E55A1B);
  color: white;
  box-shadow: 0 4px 16px rgba(255,107,43,0.35);
}
.study-mobile-nav-btn.prev:hover { border-color: var(--saffron); color: var(--saffron); }
.study-mobile-nav-btn.next:hover { transform: translateY(-2px); box-shadow: 0 6px 24px rgba(255,107,43,0.45); }
.study-mobile-nav-btn:disabled { opacity: 0.4; transform: none !important; cursor: not-allowed; }

.study-mobile-progress { flex: 1; }
.study-mobile-prog-bar {
  height: 6px;
  background: var(--bg-tertiary);
  border-radius: 3px;
  overflow: hidden;
  border: 1px solid var(--glass-border);
}
.study-mobile-prog-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--saffron), var(--jade));
  background-size: 200% 100%;
  border-radius: 3px;
  transition: width 0.5s cubic-bezier(0.34,1.56,0.64,1);
  animation: progGlow 3s ease-in-out infinite;
}

/* ─── Responsive overrides ─── */
@media (max-width: 768px) {
  .study-filter-toggle-btn { display: flex; }
  .filter-bar { display: none; } /* hidden by default, toggle shows */
  #study-filters-bar.visible { display: flex !important; }

  .study-layout {
    grid-template-columns: 1fr;
    gap: 12px;
    height: auto;
  }

  /* On mobile, hide the list — nav with arrows instead */
  #study-question-list {
    display: none;
  }
  #study-question-list.show-mobile {
    display: flex;
    max-height: 200px;
    overflow-y: auto;
  }

  .study-card-scene { gap: 8px; }

  .study-3d-card {
    padding: 20px 16px;
  }

  .qd-question { font-size: 15px; line-height: 1.7; }

  .option-btn {
    padding: 14px 14px;
    font-size: 14px;
  }
  .option-label {
    width: 28px;
    height: 28px;
    font-size: 13px;
    flex-shrink: 0;
  }

  .study-nav-bar { display: flex !important; }
  .study-mobile-nav { display: flex !important; }

  .btn-toggle-solution,
  .btn-ask-ai { font-size: 14px; padding: 12px; }
}

@media (max-width: 480px) {
  .study-3d-card { padding: 16px 14px; }
  .qd-question { font-size: 14px; }
  .study-mobile-nav-btn { padding: 10px 14px; font-size: 13px; }
}

/* ═══════════════════════════════════════════
   FLOATING AI FAB — Study / Practice Mode
═══════════════════════════════════════════ */
.floating-ai-fab {
  position: fixed;
  bottom: 88px;
  right: 18px;
  z-index: 900;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  width: 62px;
  height: 62px;
  border-radius: 50%;
  background: linear-gradient(135deg, #4285F4 0%, #9B59B6 100%);
  box-shadow: 0 4px 20px rgba(66,133,244,0.45), 0 2px 8px rgba(0,0,0,0.25);
  cursor: pointer;
  user-select: none;
  transition: transform 0.18s cubic-bezier(.34,1.56,.64,1), box-shadow 0.18s ease, opacity 0.2s ease;
  will-change: transform;
  border: 2px solid rgba(255,255,255,0.18);
  overflow: hidden;
}
.floating-ai-fab:hover,
.floating-ai-fab:active {
  transform: scale(1.12);
  box-shadow: 0 8px 30px rgba(66,133,244,0.6), 0 4px 14px rgba(0,0,0,0.3);
}
.floating-ai-fab:active { transform: scale(0.96); }

.fab-glow {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 35%, rgba(255,255,255,0.22) 0%, transparent 65%);
  pointer-events: none;
}

.fab-gemini-icon {
  width: 26px;
  height: 26px;
  flex-shrink: 0;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.3));
}

.fab-label {
  font-size: 9px;
  font-weight: 700;
  color: rgba(255,255,255,0.92);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  line-height: 1;
}

/* Pulse ring animation */
.floating-ai-fab::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid rgba(66,133,244,0.4);
  animation: fab-pulse 2.4s ease-in-out infinite;
}
@keyframes fab-pulse {
  0%,100% { transform: scale(1); opacity: 0.7; }
  50% { transform: scale(1.18); opacity: 0; }
}

/* On desktop/wide sidebar layout, shift FAB left to avoid overlap */
@media (min-width: 768px) {
  .floating-ai-fab { right: 24px; bottom: 32px; }
}

/* ═══════════════════════════════════════════
   SaaS + scorecards + UI/UX additions
═══════════════════════════════════════════ */

/* Page-enter transition (added by navigate()) */
@keyframes page-enter { from { opacity: 0; transform: translateY(16px) scale(0.98); } to { opacity: 1; transform: translateY(0) scale(1); } }
.page-enter { animation: page-enter 0.4s cubic-bezier(0.34,1.56,0.64,1); }

/* Subscription plan picker */
.plan-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 8px 0 4px; }
.plan-card {
  display: flex; flex-direction: column; gap: 2px; padding: 14px 12px;
  background: var(--bg-tertiary); border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm); cursor: pointer; transition: var(--transition); text-align: center;
}
.plan-card:hover { border-color: var(--saffron); transform: translateY(-2px); box-shadow: var(--shadow-card); }
.plan-card:disabled { cursor: not-allowed; }
.plan-name { font-size: 13px; color: var(--text-secondary); }
.plan-price { font-family: var(--font-display); font-size: 24px; font-weight: 800; color: var(--text-primary); }
.plan-sub { font-size: 10px; color: var(--saffron); }

/* Footer legal links */
.legal-links { display: flex; gap: 10px; justify-content: center; margin-top: 10px; }
.legal-links a { font-size: 11px; color: var(--text-muted); text-decoration: none; }
.legal-links a:hover { color: var(--text-secondary); text-decoration: underline; }

/* Scorecard headings + vs-last delta */
.scorecard-h { font-family: var(--font-display); font-size: 16px; font-weight: 700; margin: 0 0 8px; }
.score-delta.up { color: var(--jade); }
.score-delta.down { color: #E74C3C; }

/* Weak-topic chips */
.weak-chip-row { display: flex; flex-wrap: wrap; gap: 8px; }
.weak-chip {
  font-size: 12px; padding: 5px 10px; border-radius: 999px;
  background: rgba(231,76,60,0.12); color: #E74C3C; border: 1px solid rgba(231,76,60,0.25);
}
.weak-chip b { font-family: var(--font-mono); }

/* Question Review accordion */
.result-review { padding-bottom: 8px; }
.review-list { display: flex; flex-direction: column; }
.review-item { border-top: 1px solid var(--glass-border); }
.review-item summary {
  list-style: none; cursor: pointer; display: flex; gap: 10px; align-items: flex-start;
  padding: 12px 20px; font-size: 13px; line-height: 1.5;
}
.review-item summary::-webkit-details-marker { display: none; }
.review-icon { flex: 0 0 22px; width: 22px; height: 22px; border-radius: 50%; display: grid; place-items: center; font-size: 12px; font-weight: 700; color: #fff; }
.review-icon.ok { background: var(--jade); }
.review-icon.bad { background: #E74C3C; }
.review-icon.skip { background: var(--text-muted); }
.review-q { color: var(--text-primary); }
.review-body { padding: 0 20px 14px 52px; font-size: 12.5px; color: var(--text-secondary); }
.review-line { margin: 2px 0; }
.review-line b.ok { color: var(--jade); }
.review-line b.bad { color: #E74C3C; }
.review-line b.skip { color: var(--text-muted); }
.review-sol { margin-top: 8px; padding: 8px 10px; background: var(--bg-tertiary); border-radius: 8px; line-height: 1.7; }

/* Test history (past scorecards) */
.history-head { display: flex; align-items: center; justify-content: space-between; margin: 24px 0 12px; }
.history-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.history-card { display: flex; align-items: center; gap: 12px; padding: 14px; cursor: pointer; transition: var(--transition); }
.history-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-card); }
.history-ring {
  flex: 0 0 52px; width: 52px; height: 52px; border-radius: 50%; display: grid; place-items: center;
  font-family: var(--font-mono); font-size: 13px; font-weight: 600; color: var(--text-primary);
  background: radial-gradient(closest-side, var(--bg-secondary) 70%, transparent 71%),
              conic-gradient(var(--col) calc(var(--pct) * 1%), var(--bg-tertiary) 0);
}
.history-meta { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.history-meta strong { font-size: 13px; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.history-meta span { font-size: 11px; color: var(--text-muted); }

/* Resume-last-test card */
.resume-card { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 18px; margin-bottom: 16px; }
.resume-info { display: flex; flex-direction: column; gap: 2px; }
.resume-label { font-size: 11px; color: var(--text-muted); }
.resume-info strong { font-size: 14px; color: var(--text-primary); }

/* Dashboard sparkline */
.home-sparkline { width: 100%; height: 48px; margin-top: 12px; display: block; }

/* Streak celebration pop */
@keyframes streak-pop { 0% { transform: scale(1); } 35% { transform: scale(1.18); } 100% { transform: scale(1); } }
.streak-pop { animation: streak-pop 0.6s cubic-bezier(0.34,1.56,0.64,1); }

/* ── Bottom Sheet ── */
.sheet-overlay {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(0,0,0,0.5);
  display: flex; align-items: flex-end; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity 0.3s ease;
}
.sheet-overlay.open { opacity: 1; pointer-events: all; }
.bottom-sheet {
  width: 100%; max-width: 520px;
  background: var(--bg-primary);
  border-radius: 20px 20px 0 0;
  padding: 24px 20px 32px;
  transform: translateY(100%);
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  max-height: 85vh; overflow-y: auto;
  position: relative;
}
.sheet-overlay.open .bottom-sheet { transform: translateY(0); }
.sheet-handle {
  width: 36px; height: 4px;
  background: rgba(255,255,255,0.15);
  border-radius: 2px;
  margin: 0 auto 16px;
  cursor: grab;
}

/* Skeleton loaders */
.skeleton { position: relative; overflow: hidden; background: var(--bg-tertiary); border-radius: var(--radius-sm); min-height: 16px; }
.skeleton::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, var(--glass-hover), transparent);
  transform: translateX(-100%); animation: skeleton-sweep 1.4s ease-in-out infinite;
}
@keyframes skeleton-sweep { to { transform: translateX(100%); } }

.skeleton-card {
  position: relative; overflow: hidden;
  display: flex; flex-direction: column; gap: 8px;
}
.skeleton-card::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, var(--glass-hover), transparent);
  transform: translateX(-100%); animation: skeleton-sweep 1.4s ease-in-out infinite;
  border-radius: inherit; pointer-events: none;
}

@keyframes navPop { 0% { transform: scale(1); } 40% { transform: scale(1.12); } 100% { transform: scale(1); } }

/* ─── STAGGERED REVEAL ─── */
.page-reveal > * {
  opacity: 0;
  transform: translateY(24px);
  animation: fadeSlideUp 0.45s cubic-bezier(0.34,1.56,0.64,1) forwards;
}
.page-reveal > *:nth-child(1) { animation-delay: 0.02s; }
.page-reveal > *:nth-child(2) { animation-delay: 0.07s; }
.page-reveal > *:nth-child(3) { animation-delay: 0.12s; }
.page-reveal > *:nth-child(4) { animation-delay: 0.17s; }
.page-reveal > *:nth-child(5) { animation-delay: 0.22s; }
.page-reveal > *:nth-child(6) { animation-delay: 0.27s; }
.page-reveal > *:nth-child(7) { animation-delay: 0.32s; }
.page-reveal > *:nth-child(8) { animation-delay: 0.37s; }
.page-reveal > *:nth-child(9) { animation-delay: 0.42s; }
.page-reveal > *:nth-child(10) { animation-delay: 0.47s; }

@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── WATERMARK ANIMATED GRADIENT BACKGROUND ─── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 80% 60% at 10% 20%, rgba(255,107,43,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 90% 30%, rgba(0,217,163,0.04) 0%, transparent 50%),
    radial-gradient(ellipse 50% 40% at 50% 80%, rgba(138,43,226,0.03) 0%, transparent 50%);
  pointer-events: none;
  animation: bgShift 20s ease-in-out infinite alternate;
}
@keyframes bgShift {
  0%   { transform: scale(1) rotate(0deg); }
  50%  { transform: scale(1.05) rotate(1deg); }
  100% { transform: scale(1) rotate(-1deg); }
}
[data-theme="light"] body::before,
[data-effective-theme="light"] body::before {
  background:
    radial-gradient(ellipse 80% 60% at 10% 20%, rgba(255,107,43,0.10) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 90% 30%, rgba(0,217,163,0.07) 0%, transparent 50%),
    radial-gradient(ellipse 50% 40% at 50% 80%, rgba(138,43,226,0.05) 0%, transparent 50%);
}

/* ─── SMOOTH SCROLL ─── */
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* ─── ENHANCED FOCUS STYLES ─── */
*:focus-visible {
  outline: 2px solid var(--saffron);
  outline-offset: 2px;
  border-radius: 4px;
}
button:focus-visible,
a:focus-visible,
select:focus-visible,
input:focus-visible { outline-offset: 2px; }
select:focus-visible { box-shadow: 0 0 0 3px var(--saffron-glow); }

/* ─── TOP PROGRESS BAR ─── */
.loading-bar {
  position: fixed; top: 0; left: 0; width: 100%; height: 3px;
  z-index: 99999; pointer-events: none; opacity: 0;
  transition: opacity 0.2s;
}
.loading-bar.active { opacity: 1; }
.loading-bar-fill {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--saffron), #ff8f50, var(--saffron));
  border-radius: 0 3px 3px 0;
  transition: width 0.3s cubic-bezier(0.4,0,0.2,1);
  box-shadow: 0 0 12px var(--saffron-glow);
}

/* ─── SCROLL TO TOP ─── */
#scroll-top-btn {
  position: fixed; bottom: 100px; right: 88px; z-index: 49;
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; opacity: 0; transform: translateY(20px) scale(0.8);
  transition: all var(--transition-bounce);
  pointer-events: none;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
#scroll-top-btn.visible {
  opacity: 1; transform: translateY(0) scale(1);
  pointer-events: auto;
}
#scroll-top-btn:hover {
  background: var(--saffron); color: white; border-color: var(--saffron);
  box-shadow: 0 0 20px var(--saffron-glow); transform: translateY(-3px);
}
#scroll-top-btn:active { transform: translateY(0) scale(0.9); }
#scroll-top-btn svg { width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 2.5; stroke-linecap: round; }
@media (max-width: 768px) { #scroll-top-btn { bottom: 80px; right: 72px; width: 36px; height: 36px; } }

/* ─── REDUCED MOTION ─── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .floating-ai-fab::after { animation: none !important; }
}

/* ─── PRINT STYLES ─── */
@media print {
  .sidebar, .topbar, .bottom-nav, .floating-ai-fab, #scroll-top-btn,
  .motivation-popup, .toast, .sidebar-overlay { display: none !important; }
  .main { margin-left: 0; padding: 0; max-width: 100%; }
  .glass { backdrop-filter: none; border: 1px solid #ddd; background: white; }
  body { color: black; background: white; }
  .page.active { display: block !important; }
}

/* ─── POLISHED UTILITIES ─── */
.gradient-text-saffron {
  background: linear-gradient(135deg, var(--saffron), var(--saffron-light));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hover-lift {
  transition: transform var(--transition-bounce), box-shadow var(--transition-bounce);
}
.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.2);
}
.scale-press:active { transform: scale(0.96); }
.glow-saffron { box-shadow: 0 0 20px var(--saffron-glow); }
.glow-jade { box-shadow: 0 0 20px var(--jade-glow); }
.glow-purple { box-shadow: 0 0 20px var(--purple-glow); }
.glow-blue { box-shadow: 0 0 20px var(--blue-glow); }

/* Subtle card-shadow polish */
.stat-card, .subject-card, .history-card, .plan-card { box-shadow: var(--shadow-card); }

/* ════════════════════════════════════════
   SUBSCRIPTION PAGE
   ════════════════════════════════════════ */
.sub-container {
  max-width: 520px;
  margin: 0 auto;
  padding: 16px 20px 40px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.sub-status-card {
  background: var(--bg-tertiary);
  border-radius: 14px;
  padding: 16px;
}
.sub-status-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.sub-status-icon {
  font-size: 28px;
  line-height: 1;
}
.sub-status-label {
  font-size: 16px;
  font-weight: 700;
}
.sub-status-date {
  font-size: 14px;
  color: var(--text-primary);
  margin-top: 2px;
}
.sub-status-days {
  font-size: 13px;
  color: var(--jade);
  font-weight: 600;
  margin-top: 2px;
}
.sub-usage-bar {
  height: 6px;
  background: var(--glass-border);
  border-radius: 3px;
  overflow: hidden;
}
.sub-usage-fill {
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--saffron), #FF6B2B);
  transition: width 0.6s ease;
}
.sub-actions {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.btn-secondary {
  padding: 12px 20px;
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  background: transparent;
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  transition: background 0.2s;
}
.btn-secondary:hover {
  background: var(--bg-tertiary);
}
.sub-section {
  background: var(--bg-tertiary);
  border-radius: 14px;
  padding: 16px;
}
.sub-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.sub-compare-col {
  background: var(--bg-secondary);
  border-radius: 12px;
  padding: 14px;
  border: 1px solid var(--glass-border);
  transition: border-color 0.2s;
}
.sub-compare-col.sub-compare-active {
  border-color: var(--jade);
}
.sub-compare-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.sub-price {
  font-size: 20px;
  font-weight: 800;
  color: var(--saffron);
  margin-bottom: 10px;
}
.sub-compare-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 12px;
  color: var(--text-primary);
}
.sub-compare-col ul li {
  padding: 3px 0;
}
.sub-na {
  color: var(--text-muted) !important;
}
.sub-history {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.sub-history-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid var(--glass-border);
}
.sub-history-item:last-child {
  border-bottom: none;
}
.sub-license-row {
  display: flex;
  gap: 8px;
  align-items: center;
}

/* ════════════════════════════════════════
   ONBOARDING IMPROVEMENTS
   ════════════════════════════════════════ */
.onboard-progress {
  height: 4px;
  background: var(--glass-border);
  border-radius: 2px;
  margin-bottom: 16px;
  overflow: hidden;
}
.onboard-prog-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--saffron), #FF6B2B);
  border-radius: 2px;
  transition: width 0.5s ease;
}
.onboard-features {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 16px 0;
}
.onboard-feature-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px;
  background: var(--bg-secondary);
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  cursor: pointer;
  transition: border-color 0.2s, transform 0.15s;
}
.onboard-feature-card:hover {
  border-color: var(--saffron);
  transform: translateX(4px);
}
.onboard-feat-icon {
  font-size: 28px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border-radius: 12px;
  flex-shrink: 0;
}
.onboard-feat-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.onboard-feat-text strong {
  font-size: 14px;
  color: var(--text-primary);
}
.onboard-feat-text span {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.4;
}
.onboard-actions {
  display: flex;
  gap: 8px;
  margin-top: 4px;
}

/* ════════════════════════════════════════
   PREMIUM UI — Phase 1
   ════════════════════════════════════════ */

/* ── 1.1 Skeleton Loaders ── */
.skeleton-card {
  background: var(--bg-tertiary);
  border-radius: 12px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.skeleton-line {
  height: 12px;
  border-radius: 6px;
  background: linear-gradient(90deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0.1) 50%, rgba(255,255,255,0.04) 100%);
  background-size: 200% 100%;
  animation: shimmer 1.6s ease-in-out infinite;
}
.skeleton-line.w30 { width: 30%; }
.skeleton-line.w40 { width: 40%; }
.skeleton-line.w50 { width: 50%; }
.skeleton-line.w60 { width: 60%; }
.skeleton-line.w70 { width: 70%; }
.skeleton-line.w80 { width: 80%; }
.skeleton-line.w100 { width: 100%; }
.skeleton-line.h8 { height: 8px; }
.skeleton-line.h12 { height: 12px; }
.skeleton-line.h16 { height: 16px; }
.skeleton-line.h24 { height: 24px; border-radius: 8px; }
.skeleton-line.h40 { height: 40px; border-radius: 10px; }
.skeleton-line.h80 { height: 80px; border-radius: 12px; }
.skeleton-line.h100 { height: 100px; border-radius: 12px; }
.skeleton-circle {
  width: 40px; height: 40px; border-radius: 50%;
  background: linear-gradient(90deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0.1) 50%, rgba(255,255,255,0.04) 100%);
  background-size: 200% 100%;
  animation: shimmer 1.6s ease-in-out infinite;
}
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ── 1.2 Spring Animations ── */
.spring-lift,
.stat-card, .subject-card, .history-card, .plan-card, .revision-card,
.analytics-card, .q-card, .search-result-item, .question-list-item,
.test-type-card, .note-card, .onboard-feature-card, .achievement {
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.3s ease,
              border-color 0.3s ease !important;
}
.spring-lift:hover,
.stat-card:hover, .subject-card:hover, .history-card:hover, .plan-card:hover,
.revision-card:hover, .analytics-card:hover, .q-card:hover,
.search-result-item:hover, .question-list-item:hover,
.test-type-card:hover, .note-card:hover, .onboard-feature-card:hover {
  transform: translateY(-3px) scale(1.01);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}
.spring-lift:active,
.stat-card:active, .subject-card:active, .history-card:active, .plan-card:active,
.revision-card:active, .analytics-card:active, .q-card:active,
.search-result-item:active, .question-list-item:active,
.test-type-card:active, .note-card:active {
  transform: scale(0.97);
}

/* Page enter with spring */
@keyframes pageEnterSpring {
  0% { opacity: 0; transform: translateY(20px) scale(0.98); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}
.page-enter {
  animation: pageEnterSpring 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

/* Modal enter with spring */
@keyframes modalEnterSpring {
  0% { opacity: 0; transform: scale(0.92) translateY(16px); }
  100% { opacity: 1; transform: scale(1) translateY(0); }
}
.modal.glass {
  animation: modalEnterSpring 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

/* ── 1.3 Staggered Reveal ── */
.stagger-item {
  animation: staggerFade 0.45s ease-out both;
}
@keyframes staggerFade {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
.stagger-item:nth-child(1)  { animation-delay: 0.03s; }
.stagger-item:nth-child(2)  { animation-delay: 0.06s; }
.stagger-item:nth-child(3)  { animation-delay: 0.09s; }
.stagger-item:nth-child(4)  { animation-delay: 0.12s; }
.stagger-item:nth-child(5)  { animation-delay: 0.15s; }
.stagger-item:nth-child(6)  { animation-delay: 0.18s; }
.stagger-item:nth-child(7)  { animation-delay: 0.21s; }
.stagger-item:nth-child(8)  { animation-delay: 0.24s; }
.stagger-item:nth-child(9)  { animation-delay: 0.27s; }
.stagger-item:nth-child(10) { animation-delay: 0.30s; }
.stagger-item:nth-child(11) { animation-delay: 0.33s; }
.stagger-item:nth-child(12) { animation-delay: 0.36s; }
.stagger-item:nth-child(13) { animation-delay: 0.39s; }
.stagger-item:nth-child(14) { animation-delay: 0.42s; }
.stagger-item:nth-child(15) { animation-delay: 0.45s; }
.stagger-item:nth-child(16) { animation-delay: 0.48s; }
.stagger-item:nth-child(17) { animation-delay: 0.51s; }
.stagger-item:nth-child(18) { animation-delay: 0.54s; }
.stagger-item:nth-child(19) { animation-delay: 0.57s; }
.stagger-item:nth-child(20) { animation-delay: 0.60s; }

/* ── 1.4 Button Press States ── */
button:active,
.btn-start-test:active,
.btn-icon:active,
.btn-cancel:active,
.action-btn:active,
.filter-select:active,
.search-chip:active,
.plan-card:active,
.nav-item:active,
.bn-item:active,
.focus-btn:active,
.tutorial-btn:active {
  transform: scale(0.96) !important;
  filter: brightness(0.92) !important;
  transition: transform 0.1s ease, filter 0.1s ease !important;
}

/* Exclude inputs and disabled buttons from press effect */
input:active, select:active, button:disabled:active,
.btn-start-test:disabled:active {
  transform: none !important;
  filter: none !important;
}

/* ── 1.5 Animated Counters ── */
.counter-grad {
  background: linear-gradient(135deg, var(--saffron), #FFB347);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-variant-numeric: tabular-nums;
}

/* ── Smooth Theme Transition (Phase 3 prep) ── */
html, body, .glass, .page, .sidebar, .bottom-nav,
.modal, .filter-select, .search-big-input,
.note-textarea, .note-card, .stat-card, .subject-card,
.history-card, .plan-card, .revision-card, .analytics-card,
.demo-card, .onboard-modal, .toast {
  transition: background 0.3s ease, color 0.3s ease,
              border-color 0.3s ease, box-shadow 0.3s ease;
}

/* ── Custom Scrollbar ── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(255,107,43,0.2);
  border-radius: 3px;
  transition: background 0.2s;
}
::-webkit-scrollbar-thumb:hover { background: rgba(255,107,43,0.4); }

/* ── Premium Glass v2 (Phase 2 prep) ── */
.glass-premium {
  background: rgba(255,255,255,0.04);
  backdrop-filter: blur(24px) saturate(1.4);
  -webkit-backdrop-filter: blur(24px) saturate(1.4);
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 8px 24px rgba(0,0,0,0.2), 0 0 0 1px rgba(255,255,255,0.04) inset;
  position: relative;
  overflow: hidden;
}
.glass-premium::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background:
    radial-gradient(circle at 30% 20%, rgba(255,107,43,0.06) 0%, transparent 60%),
    radial-gradient(circle at 70% 80%, rgba(0,217,163,0.04) 0%, transparent 50%);
  pointer-events: none;
}
.glass-premium > * { position: relative; z-index: 1; }

/* ── Progress Bar Premium ── */
.progress-premium {
  height: 6px;
  background: rgba(255,255,255,0.06);
  border-radius: 3px;
  overflow: hidden;
}
.progress-premium-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--saffron), #FFB347, var(--saffron));
  background-size: 200% 100%;
  animation: progGlow 2.5s ease-in-out infinite;
  border-radius: 3px;
  position: relative;
  transition: width 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.progress-premium-fill::after {
  content: '';
  position: absolute;
  right: 0; top: -2px;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: #FFB347;
  box-shadow: 0 0 8px rgba(255,179,71,0.5);
}
@keyframes progGlow {
  0%, 100% { background-position: 0% 0; }
  50% { background-position: 100% 0; }
}

/* ── Pull to Refresh (Phase 3 prep) ── */
.ptr-loader {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px;
  font-size: 12px;
  color: var(--text-muted);
}
.ptr-spinner {
  width: 16px; height: 16px;
  border: 2px solid rgba(255,107,43,0.2);
  border-top-color: var(--saffron);
  border-radius: 50%;
  animation: ptrSpin 0.8s linear infinite;
}
@keyframes ptrSpin { to { transform: rotate(360deg); } }

/* ── Swipe Actions (Phase 3 prep) ── */
.swipe-row {
  display: flex;
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg-tertiary);
  margin-bottom: 6px;
}
.swipe-content {
  flex: 1;
  padding: 12px 14px;
  font-size: 13px;
  color: var(--text-primary);
  line-height: 1.5;
}
.swipe-action {
  padding: 12px 16px;
  display: flex;
  align-items: center;
  font-size: 12px;
  font-weight: 600;
  color: #fff;
  cursor: pointer;
  flex-shrink: 0;
}
.swipe-action.bookmark { background: var(--saffron); }
.swipe-action.done { background: var(--jade); }