/* ============================================================
   EL TRIVIA — "Modern Academy" Design System
   Neo-Brutalist / Tactile Flashcard Aesthetic
   ============================================================ */

/* --- Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,400;0,9..144,600;0,9..144,700;0,9..144,800;0,9..144,900;1,9..144,400;1,9..144,600;1,9..144,700&family=Inter:wght@400;500;600;700&display=swap');

/* --- Custom Properties --- */
:root {
  /* Palette — Modern Academy */
  --crimson: #991B1B;
  --crimson-light: #B91C1C;
  --crimson-dark: #7F1D1D;
  --crimson-bg: rgba(153, 27, 27, 0.08);

  --mint: #10B981;
  --mint-light: #34D399;
  --mint-dark: #059669;
  --mint-bg: rgba(16, 185, 129, 0.1);

  --parchment: #FFFBEB;
  --parchment-mid: #FEF3C7;
  --parchment-dark: #F5E6B8;
  --parchment-muted: #92856B;

  --ink: #1E1B4B;
  --ink-light: #312E81;
  --ink-lighter: #4338CA;
  --ink-faded: rgba(30, 27, 75, 0.55);

  --incorrect: #DC2626;
  --incorrect-bg: rgba(220, 38, 38, 0.08);

  --gold: #D97706;
  --gold-light: #F59E0B;

  /* Typography */
  --font-display: 'Fraunces', serif;
  --font-body: 'Inter', sans-serif;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4.5rem;

  /* Neo-Brutalist borders & shadows */
  --border: 2px solid var(--ink);
  --border-light: 2px solid rgba(30, 27, 75, 0.15);
  --shadow-block: 4px 4px 0 var(--ink);
  --shadow-block-sm: 3px 3px 0 var(--ink);
  --shadow-block-lg: 6px 6px 0 var(--ink);
  --shadow-block-crimson: 4px 4px 0 var(--crimson);
  --shadow-block-mint: 4px 4px 0 var(--mint-dark);

  /* Transitions — Bouncy Spring Physics */
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-thud: cubic-bezier(0.22, 0.68, 0.55, 1.1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 150ms;
  --duration-med: 300ms;
  --duration-slow: 500ms;
  --duration-spring: 450ms;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--ink);
  background-color: var(--parchment);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* --- Grain Overlay --- */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 200px 200px;
}

/* --- Subtle Ruled Lines Background --- */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 39px,
    rgba(30, 27, 75, 0.04) 39px,
    rgba(30, 27, 75, 0.04) 40px
  );
  background-size: 100% 40px;
}

/* --- Utility --- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  color: var(--ink);
}

h1 { font-size: clamp(2.2rem, 5.5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.25rem); }
h3 { font-size: clamp(1.15rem, 2.5vw, 1.5rem); }

h1 em, h2 em {
  font-style: italic;
  font-variation-settings: 'SOFT' 100, 'WONK' 1;
}

a {
  color: var(--crimson);
  text-decoration: none;
  transition: color var(--duration-fast) ease;
}
a:hover { color: var(--ink-lighter); }

/* --- Layout Shell --- */
.page-wrapper {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: var(--space-md) 0;
  background: var(--parchment);
  border-bottom: var(--border);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

.navbar__brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--ink);
}

.navbar__logo {
  width: 40px;
  height: 40px;
  background: var(--crimson);
  border: var(--border);
  box-shadow: var(--shadow-block-sm);
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--parchment);
  transition: transform var(--duration-spring) var(--ease-spring),
              box-shadow var(--duration-spring) var(--ease-spring);
}

.navbar__brand:hover .navbar__logo {
  transform: translate(-1px, -1px);
  box-shadow: 5px 5px 0 var(--ink);
}

.navbar__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.navbar__title span {
  color: var(--crimson);
}

.navbar__nav {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  list-style: none;
}

.navbar__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--ink-faded);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  transition: all var(--duration-fast) ease;
}

.navbar__link:hover {
  color: var(--ink);
}

.navbar__link--active {
  color: var(--ink);
  border-bottom: 2px solid var(--crimson);
}

.navbar__streak {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--parchment-mid);
  border: var(--border);
  box-shadow: var(--shadow-block-sm);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--gold);
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.navbar__streak svg {
  flex-shrink: 0;
}

/* Mobile nav toggle */
.navbar__toggle {
  display: none;
  background: none;
  border: none;
  color: var(--ink);
  cursor: pointer;
  padding: var(--space-sm);
}

@media (max-width: 768px) {
  .navbar__toggle { display: block; }
  .navbar__nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    padding: var(--space-md) var(--space-lg);
    background: var(--parchment);
    border-bottom: var(--border);
    box-shadow: 0 6px 0 var(--ink);
  }
  .navbar__nav--open { display: flex; }
  .navbar__link { width: 100%; padding: var(--space-md); }
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border: var(--border);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  transition: transform var(--duration-spring) var(--ease-spring),
              box-shadow var(--duration-spring) var(--ease-spring),
              background var(--duration-fast) ease;
  position: relative;
  text-decoration: none;
  white-space: nowrap;
}

.btn:hover {
  transform: translate(-2px, -2px);
}

.btn:active {
  transform: translate(2px, 2px);
  box-shadow: 0 0 0 var(--ink) !important;
  transition-duration: 80ms;
}

.btn--primary {
  background: var(--crimson);
  color: var(--parchment);
  box-shadow: var(--shadow-block);
}

.btn--primary:hover {
  background: var(--crimson-light);
  box-shadow: var(--shadow-block-lg);
  color: var(--parchment);
}

.btn--gold {
  background: var(--gold-light);
  color: var(--ink);
  box-shadow: var(--shadow-block);
}

.btn--gold:hover {
  background: var(--gold);
  box-shadow: var(--shadow-block-lg);
}

.btn--ghost {
  background: var(--parchment);
  color: var(--ink);
  box-shadow: var(--shadow-block);
}

.btn--ghost:hover {
  background: var(--parchment-mid);
  box-shadow: var(--shadow-block-lg);
}

.btn--sm {
  padding: 8px 18px;
  font-size: 0.75rem;
  box-shadow: var(--shadow-block-sm);
}

.btn--sm:hover {
  box-shadow: var(--shadow-block);
}

.btn--lg {
  padding: 16px 36px;
  font-size: 1rem;
  box-shadow: var(--shadow-block-lg);
}

.btn--lg:hover {
  box-shadow: 8px 8px 0 var(--ink);
}

/* ============================================================
   CARDS — Neo-Brutalist Flashcard Style
   ============================================================ */
.card {
  background: var(--parchment);
  border: var(--border);
  box-shadow: var(--shadow-block);
  padding: var(--space-xl);
  transition: transform var(--duration-spring) var(--ease-spring),
              box-shadow var(--duration-spring) var(--ease-spring);
}

.card:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-block-lg);
}

/* ============================================================
   BADGES
   ============================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border: var(--border);
}

.badge--crimson {
  background: var(--crimson);
  color: var(--parchment);
}

.badge--gold {
  background: var(--gold-light);
  color: var(--ink);
}

.badge--ink {
  background: var(--ink);
  color: var(--parchment);
}

.badge--mint {
  background: var(--mint);
  color: var(--ink);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  padding: var(--space-3xl) 0 var(--space-2xl);
  position: relative;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  margin-bottom: var(--space-lg);
  background: var(--parchment-mid);
  border: var(--border);
  box-shadow: var(--shadow-block-sm);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.hero__title {
  font-weight: 900;
  margin-bottom: var(--space-lg);
  max-width: 700px;
  line-height: 1.1;
}

.hero__title em {
  color: var(--crimson);
  font-style: italic;
}

.hero__subtitle {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--ink-faded);
  max-width: 560px;
  margin-bottom: var(--space-xl);
}

.hero__actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* Decorative element — rotated card behind hero */
.hero::after {
  content: '?';
  position: absolute;
  right: 8%;
  top: 50%;
  transform: translateY(-50%) rotate(12deg);
  font-family: var(--font-display);
  font-size: 14rem;
  font-weight: 900;
  color: rgba(153, 27, 27, 0.06);
  pointer-events: none;
  line-height: 1;
}

@media (max-width: 768px) {
  .hero::after { display: none; }
}

/* ============================================================
   STATS ROW
   ============================================================ */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-3xl);
}

.stat-card {
  background: var(--parchment);
  border: var(--border);
  box-shadow: var(--shadow-block);
  padding: var(--space-lg);
  text-align: center;
  transition: transform var(--duration-spring) var(--ease-spring),
              box-shadow var(--duration-spring) var(--ease-spring);
}

.stat-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-block-lg);
}

.stat-card__value {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  color: var(--ink);
  line-height: 1.2;
}

.stat-card__value--crimson { color: var(--crimson); }
.stat-card__value--mint { color: var(--mint-dark); }

.stat-card__label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--parchment-muted);
  margin-top: var(--space-xs);
}

@media (max-width: 640px) {
  .stats-row {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ============================================================
   DAILY CHALLENGE
   ============================================================ */
.daily-challenge {
  margin-bottom: var(--space-3xl);
}

.daily-challenge__card {
  padding: var(--space-xl);
  background: var(--parchment);
  position: relative;
  overflow: hidden;
}

/* Red left accent strip */
.daily-challenge__card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 6px;
  background: var(--crimson);
}

.daily-challenge__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-xl);
  margin-bottom: var(--space-lg);
}

.daily-challenge__meta {
  flex: 1;
}

.daily-challenge__tag {
  margin-bottom: var(--space-md);
  box-shadow: var(--shadow-block-sm);
}

.daily-challenge__title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: var(--space-sm);
}

.daily-challenge__desc {
  font-size: 0.95rem;
  color: var(--ink-faded);
  line-height: 1.6;
}

.daily-challenge__timer {
  text-align: center;
  padding: var(--space-md) var(--space-lg);
  background: var(--ink);
  border: var(--border);
  box-shadow: var(--shadow-block-sm);
  flex-shrink: 0;
}

.daily-challenge__timer-label {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--parchment-muted);
  margin-bottom: 4px;
}

.daily-challenge__timer-value {
  font-family: var(--font-body);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--parchment);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
}

.daily-challenge__info {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: var(--border-light);
  flex-wrap: wrap;
}

.daily-challenge__detail {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink-faded);
}

.daily-challenge__detail svg {
  color: var(--crimson);
}

@media (max-width: 640px) {
  .daily-challenge__header {
    flex-direction: column;
  }
  .daily-challenge__timer {
    align-self: flex-start;
  }
}

/* ============================================================
   CATEGORIES GRID
   ============================================================ */
.categories {
  margin-bottom: var(--space-3xl);
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-md);
  border-bottom: var(--border);
}

.categories__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.category-card {
  padding: var(--space-xl) var(--space-lg);
  text-align: center;
  cursor: pointer;
  position: relative;
}

.category-card__icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
  line-height: 1;
  transition: transform var(--duration-spring) var(--ease-spring);
}

.category-card:hover .category-card__icon {
  transform: scale(1.15) rotate(-5deg);
}

.category-card__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--ink);
  margin-bottom: var(--space-xs);
}

.category-card__count {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--parchment-muted);
}

/* Category accent colors via top border */
.category-card--science  { border-top: 4px solid var(--mint); }
.category-card--history  { border-top: 4px solid var(--crimson); }
.category-card--geo      { border-top: 4px solid var(--ink-lighter); }
.category-card--arts     { border-top: 4px solid var(--gold-light); }
.category-card--sports   { border-top: 4px solid var(--mint-dark); }
.category-card--tech     { border-top: 4px solid var(--ink); }

@media (max-width: 768px) {
  .categories__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .categories__grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   LEADERBOARD
   ============================================================ */
.leaderboard {
  margin-bottom: var(--space-3xl);
}

.leaderboard__table-wrap {
  border: var(--border);
  box-shadow: var(--shadow-block);
  background: var(--parchment);
  overflow: hidden;
}

.leaderboard__table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.leaderboard__table thead {
  background: var(--ink);
  color: var(--parchment);
}

.leaderboard__table th {
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.leaderboard__table td {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid rgba(30, 27, 75, 0.08);
}

.leaderboard__table tbody tr {
  transition: background var(--duration-fast) ease;
}

.leaderboard__table tbody tr:hover {
  background: var(--parchment-mid);
}

.leaderboard__table tbody tr:last-child td {
  border-bottom: none;
}

.leaderboard__rank {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  font-weight: 800;
  font-size: 0.85rem;
  border: var(--border);
}

.leaderboard__rank--gold {
  background: var(--gold-light);
  color: var(--ink);
  box-shadow: var(--shadow-block-sm);
}

.leaderboard__rank--silver {
  background: #D1D5DB;
  color: var(--ink);
}

.leaderboard__rank--bronze {
  background: #D2956A;
  color: var(--ink);
}

.leaderboard__player {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 600;
}

.leaderboard__avatar {
  width: 34px;
  height: 34px;
  border: var(--border);
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--parchment);
  background: var(--ink);
  flex-shrink: 0;
}

.leaderboard__accuracy {
  font-weight: 700;
  color: var(--mint-dark);
}

.leaderboard__score {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  color: var(--crimson);
}

/* Tab buttons */
.leaderboard-tabs {
  display: flex;
  gap: var(--space-sm);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  margin-top: auto;
  padding: var(--space-xl) 0;
  border-top: var(--border);
  background: var(--ink);
  color: var(--parchment);
}

.footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer__copy {
  font-size: 0.82rem;
  font-weight: 500;
  color: rgba(255, 251, 235, 0.6);
}

.footer__links {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
}

.footer__links a {
  font-size: 0.82rem;
  font-weight: 600;
  color: rgba(255, 251, 235, 0.6);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: color var(--duration-fast) ease;
}

.footer__links a:hover {
  color: var(--parchment);
}

/* ============================================================
   QUIZ PAGE — Progress Bar
   ============================================================ */
.quiz-progress {
  margin-bottom: var(--space-xl);
  padding-top: var(--space-xl);
}

.quiz-progress__bar {
  height: 8px;
  background: var(--parchment-mid);
  border: var(--border);
  overflow: hidden;
  margin-bottom: var(--space-sm);
}

.quiz-progress__fill {
  height: 100%;
  background: var(--crimson);
  transition: width var(--duration-slow) var(--ease-out);
}

.quiz-progress__text {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-faded);
}

.quiz-progress__text strong {
  color: var(--ink);
}

/* ============================================================
   QUIZ LAYOUT — Two-column
   ============================================================ */
.quiz-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--space-xl);
  align-items: start;
  padding-bottom: var(--space-3xl);
}

@media (max-width: 860px) {
  .quiz-layout {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   QUIZ TIMER
   ============================================================ */
.quiz-timer {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.quiz-timer__bar {
  flex: 1;
  height: 10px;
  background: var(--parchment-mid);
  border: var(--border);
  overflow: hidden;
}

.quiz-timer__fill {
  height: 100%;
  background: var(--mint);
  transition: width 1s linear;
}

.quiz-timer__fill--warning {
  background: var(--gold-light);
}

.quiz-timer__fill--danger {
  background: var(--incorrect);
}

.quiz-timer__text {
  font-family: var(--font-body);
  font-size: 1.1rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  min-width: 40px;
  text-align: right;
}

.quiz-timer__text--warning {
  color: var(--gold);
}

.quiz-timer__text--danger {
  color: var(--incorrect);
  animation: timer-pulse 0.5s ease infinite alternate;
}

@keyframes timer-pulse {
  from { opacity: 1; }
  to { opacity: 0.4; }
}

/* ============================================================
   QUESTION CARD
   ============================================================ */
.question-card {
  padding: var(--space-2xl);
}

.question-card__number {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--parchment-muted);
  margin-bottom: var(--space-sm);
}

.question-card__category {
  margin-bottom: var(--space-lg);
}

.question-card__text {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  line-height: 1.45;
  color: var(--ink);
  margin-bottom: var(--space-2xl);
}

/* ============================================================
   ANSWER OPTIONS
   ============================================================ */
.answers {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.answer-option {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--parchment);
  border: var(--border);
  box-shadow: var(--shadow-block-sm);
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink);
  text-align: left;
  transition: transform var(--duration-spring) var(--ease-spring),
              box-shadow var(--duration-spring) var(--ease-spring),
              background var(--duration-fast) ease,
              border-color var(--duration-fast) ease;
}

.answer-option:hover:not(.answer-option--disabled) {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-block);
  background: var(--parchment-mid);
}

.answer-option:active:not(.answer-option--disabled) {
  transform: translate(2px, 2px);
  box-shadow: 0 0 0 var(--ink);
  transition-duration: 80ms;
}

.answer-option__key {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--ink);
  color: var(--parchment);
  font-weight: 800;
  font-size: 0.8rem;
  border: 2px solid var(--ink);
  flex-shrink: 0;
  transition: background var(--duration-fast) ease;
}

/* States */
.answer-option--correct {
  background: var(--mint-bg);
  border-color: var(--mint-dark);
  box-shadow: var(--shadow-block-mint);
}

.answer-option--correct .answer-option__key {
  background: var(--mint);
  border-color: var(--mint-dark);
}

.answer-option--incorrect {
  background: var(--incorrect-bg);
  border-color: var(--incorrect);
  box-shadow: 4px 4px 0 var(--incorrect);
}

.answer-option--incorrect .answer-option__key {
  background: var(--incorrect);
  border-color: var(--incorrect);
}

.answer-option--disabled {
  cursor: default;
  opacity: 0.7;
}

.answer-option--disabled.answer-option--correct,
.answer-option--disabled.answer-option--incorrect {
  opacity: 1;
}

/* ============================================================
   FEEDBACK BAR
   ============================================================ */
.feedback-bar {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  margin-top: var(--space-lg);
  border: var(--border);
  animation: feedback-enter var(--duration-spring) var(--ease-spring);
}

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

.feedback-bar--correct {
  background: var(--mint-bg);
  border-color: var(--mint-dark);
  box-shadow: var(--shadow-block-mint);
}

.feedback-bar--correct .feedback-bar__icon {
  color: var(--mint-dark);
}

.feedback-bar--incorrect {
  background: var(--incorrect-bg);
  border-color: var(--incorrect);
  box-shadow: 4px 4px 0 var(--incorrect);
}

.feedback-bar--incorrect .feedback-bar__icon {
  color: var(--incorrect);
}

.feedback-bar__icon {
  flex-shrink: 0;
}

.feedback-bar__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 0.85rem;
}

.feedback-bar__text strong {
  font-size: 0.9rem;
}

.feedback-bar__text span {
  color: var(--ink-faded);
  font-size: 0.82rem;
}

/* ============================================================
   SCOREBOARD SIDEBAR
   ============================================================ */
.scoreboard {
  background: var(--parchment);
  border: var(--border);
  box-shadow: var(--shadow-block);
  padding: var(--space-xl);
  position: sticky;
  top: 90px;
}

.scoreboard__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--parchment-muted);
  padding-bottom: var(--space-md);
  border-bottom: var(--border-light);
  margin-bottom: var(--space-lg);
}

.scoreboard__score {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.scoreboard__score-value {
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--crimson);
  line-height: 1;
}

.scoreboard__score-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--parchment-muted);
  margin-top: var(--space-xs);
}

.scoreboard__stats {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.scoreboard__stat {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid rgba(30, 27, 75, 0.06);
}

.scoreboard__stat:last-child {
  border-bottom: none;
}

.scoreboard__stat-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--ink-faded);
}

.scoreboard__stat-value {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--ink);
}

.scoreboard__stat-value--correct {
  color: var(--mint-dark);
}

.scoreboard__stat-value--incorrect {
  color: var(--incorrect);
}

/* Score pop animation */
.score-pop {
  animation: score-pop-anim var(--duration-spring) var(--ease-spring);
}

@keyframes score-pop-anim {
  0% { transform: scale(1); }
  40% { transform: scale(1.2); }
  100% { transform: scale(1); }
}

/* ============================================================
   QUIZ COMPLETE OVERLAY
   ============================================================ */
.quiz-complete {
  text-align: center;
  padding: var(--space-2xl) 0;
}

.quiz-complete__trophy {
  font-size: 3.5rem;
  margin-bottom: var(--space-md);
}

.quiz-complete__title {
  font-family: var(--font-display);
  font-weight: 900;
  margin-bottom: var(--space-sm);
}

.quiz-complete__subtitle {
  color: var(--ink-faded);
  font-size: 0.95rem;
  margin-bottom: var(--space-2xl);
}

.quiz-complete__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

.quiz-complete__stat-value {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 900;
  line-height: 1.2;
}

.quiz-complete__stat-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--parchment-muted);
  margin-top: var(--space-xs);
}

.quiz-complete__actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   STAGGER ANIMATIONS — Page load reveal
   ============================================================ */
@keyframes card-enter {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero,
.stat-card,
.daily-challenge__card,
.category-card,
.leaderboard__table-wrap,
.question-card,
.scoreboard {
  animation: card-enter var(--duration-slow) var(--ease-out) both;
}

.hero { animation-delay: 0ms; }
.stat-card:nth-child(1) { animation-delay: 80ms; }
.stat-card:nth-child(2) { animation-delay: 140ms; }
.stat-card:nth-child(3) { animation-delay: 200ms; }
.stat-card:nth-child(4) { animation-delay: 260ms; }
.daily-challenge__card { animation-delay: 320ms; }
.category-card:nth-child(1) { animation-delay: 100ms; }
.category-card:nth-child(2) { animation-delay: 160ms; }
.category-card:nth-child(3) { animation-delay: 220ms; }
.category-card:nth-child(4) { animation-delay: 280ms; }
.category-card:nth-child(5) { animation-delay: 340ms; }
.category-card:nth-child(6) { animation-delay: 400ms; }
.leaderboard__table-wrap { animation-delay: 200ms; }
.question-card { animation-delay: 100ms; }
.scoreboard { animation-delay: 200ms; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 640px) {
  .hero__title {
    font-size: 2rem;
  }
  .hero__actions {
    flex-direction: column;
  }
  .hero__actions .btn {
    width: 100%;
  }
  .daily-challenge__info {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }
  .daily-challenge__info .btn {
    width: 100%;
    margin-top: var(--space-sm);
  }
  .footer .container {
    flex-direction: column;
    text-align: center;
  }
}