/* ==========================================================================
   OttoQuiz Main Stylesheet
   Modern, accessible, responsive Quiz Application & Platform
   ========================================================================== */

:root {
  /* Color Palette - Light Mode */
  --bg-primary: #0F172A;
  --bg-secondary: #1E293B;
  --bg-card: rgba(30, 41, 59, 0.75);
  --bg-card-hover: rgba(51, 65, 85, 0.85);
  --border-color: rgba(148, 163, 184, 0.15);
  --border-focus: #6366F1;
  
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  
  --brand-primary: #6366F1;
  --brand-primary-hover: #4F46E5;
  --brand-secondary: #EC4899;
  --brand-accent: #8B5CF6;
  --brand-gradient: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #EC4899 100%);
  --brand-gradient-glow: 0 8px 32px rgba(99, 102, 241, 0.35);

  --success: #10B981;
  --success-bg: rgba(16, 185, 129, 0.15);
  --success-border: #059669;
  
  --error: #EF4444;
  --error-bg: rgba(239, 68, 68, 0.15);
  --error-border: #DC2626;

  --warning: #F59E0B;
  --warning-bg: rgba(245, 158, 11, 0.15);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.12);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.25), 0 8px 10px -6px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 20px 40px -15px rgba(0, 0, 0, 0.4);

  --font-main: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --max-width: 1200px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg-primary: #F8FAFC;
  --bg-secondary: #FFFFFF;
  --bg-card: rgba(255, 255, 255, 0.9);
  --bg-card-hover: #F1F5F9;
  --border-color: rgba(100, 116, 139, 0.15);
  --border-focus: #4F46E5;

  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #94A3B8;

  --brand-primary: #4F46E5;
  --brand-primary-hover: #4338CA;
  --brand-gradient-glow: 0 8px 24px rgba(79, 70, 229, 0.2);

  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 20px 35px -10px rgba(0, 0, 0, 0.12);
}

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

html {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  scroll-behavior: smooth;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(236, 72, 153, 0.06) 0%, transparent 40%);
  background-attachment: fixed;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  outline: none;
  background: none;
  transition: var(--transition);
}

img, svg {
  vertical-align: middle;
  max-width: 100%;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ==========================================================================
   Header & Navbar
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

[data-theme="light"] .site-header {
  background: rgba(255, 255, 255, 0.85);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.nav-brand svg {
  height: 40px;
  width: auto;
}

.brand-text-logo {
  display: flex;
  align-items: center;
  font-weight: 900;
  font-size: 1.5rem;
}

.brand-accent-text {
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-link {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-secondary);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--brand-gradient);
  border-radius: var(--radius-full);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.icon-btn {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 1.15rem;
}

.icon-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--brand-primary);
  transform: translateY(-2px);
}

.mobile-menu-btn {
  display: none;
}

/* ==========================================================================
   Buttons & Badges
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  transition: var(--transition);
  text-align: center;
  user-select: none;
}

.btn-primary {
  background: var(--brand-gradient);
  color: #FFFFFF;
  box-shadow: var(--brand-gradient-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
}

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

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--brand-primary);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border-color);
}

.btn-outline:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
  background: rgba(99, 102, 241, 0.08);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-brand {
  background: rgba(99, 102, 241, 0.15);
  color: #A5B4FC;
  border: 1px solid rgba(99, 102, 241, 0.3);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  padding: 4.5rem 0 3rem;
  text-align: center;
  position: relative;
}

.hero-pill {
  margin-bottom: 1.25rem;
}

.hero-title {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto 2.5rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
  max-width: 800px;
  margin: 3.5rem auto 0;
}

.stat-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  backdrop-filter: blur(8px);
  text-align: center;
}

.stat-num {
  font-size: 2rem;
  font-weight: 800;
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: block;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-top: 0.25rem;
}

/* ==========================================================================
   Quiz Setup & Configuration Panel
   ========================================================================== */
.quiz-setup-card {
  max-width: 800px;
  margin: 2rem auto;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.quiz-setup-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--brand-gradient);
}

.setup-header {
  text-align: center;
  margin-bottom: 2rem;
}

.setup-header h2 {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.setup-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2.25rem;
}

.setup-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-bottom: 0.6rem;
}

.custom-select {
  width: 100%;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 500;
  outline: none;
  cursor: pointer;
  transition: var(--transition);
}

.custom-select:focus {
  border-color: var(--brand-primary);
}

/* ==========================================================================
   Categories Section
   ========================================================================== */
.section-title-wrap {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.section-subtitle {
  color: var(--text-secondary);
  max-width: 580px;
  margin: 0 auto;
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.category-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.category-card:hover {
  transform: translateY(-4px);
  border-color: var(--brand-primary);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-md);
}

.category-card-icon {
  font-size: 2.25rem;
  margin-bottom: 1rem;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.category-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.category-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.category-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-color);
  padding-top: 1rem;
}

.category-play-btn {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--brand-primary);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

/* ==========================================================================
   Quiz Live Play Arena (Interactive Screen)
   ========================================================================== */
.quiz-arena {
  display: none;
  max-width: 820px;
  margin: 1.5rem auto 3rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.quiz-arena.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

.arena-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.75rem;
  border-bottom: 1px solid var(--border-color);
  background: rgba(15, 23, 42, 0.4);
}

.quiz-badge-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.streak-counter {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 700;
  font-size: 0.9rem;
  color: #F59E0B;
  background: rgba(245, 158, 11, 0.12);
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-full);
}

.progress-container {
  width: 100%;
  height: 6px;
  background: rgba(148, 163, 184, 0.15);
  position: relative;
}

.progress-bar {
  height: 100%;
  background: var(--brand-gradient);
  width: 0%;
  transition: width 0.35s ease;
}

.arena-content {
  padding: 2.25rem;
}

.question-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.question-number {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.timer-pill {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 800;
  font-size: 1.1rem;
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-full);
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.timer-pill.warning {
  color: #EF4444;
  border-color: #EF4444;
  animation: pulse 1s infinite;
}

.question-text {
  font-size: 1.45rem;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 2rem;
}

/* Options Grid */
.options-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-bottom: 2rem;
}

@media (min-width: 640px) {
  .options-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.option-btn {
  background: var(--bg-primary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.15rem 1.25rem;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 600;
  transition: var(--transition);
  position: relative;
}

.option-btn:hover:not(:disabled) {
  border-color: var(--brand-primary);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.option-prefix {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.option-btn.selected {
  border-color: var(--brand-primary);
  background: rgba(99, 102, 241, 0.15);
}

.option-btn.correct {
  border-color: var(--success);
  background: var(--success-bg) !important;
  color: #10B981;
}

.option-btn.correct .option-prefix {
  background: var(--success);
  color: #FFFFFF;
  border-color: var(--success);
}

.option-btn.wrong {
  border-color: var(--error);
  background: var(--error-bg) !important;
  color: #EF4444;
}

.option-btn.wrong .option-prefix {
  background: var(--error);
  color: #FFFFFF;
  border-color: var(--error);
}

.option-btn:disabled {
  cursor: default;
  opacity: 0.9;
}

.option-btn.eliminated {
  opacity: 0.25;
  pointer-events: none;
  text-decoration: line-through;
}

/* Lifelines Bar */
.lifelines-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 1rem;
}

.lifeline-buttons {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.lifeline-btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.5rem 0.9rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  color: var(--text-primary);
}

.lifeline-btn:hover:not(:disabled) {
  border-color: var(--brand-primary);
  background: var(--bg-card-hover);
  color: var(--brand-primary);
}

.lifeline-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  text-decoration: line-through;
}

/* Explanation Box */
.explanation-card {
  display: none;
  background: rgba(99, 102, 241, 0.1);
  border-left: 4px solid var(--brand-primary);
  padding: 1.25rem 1.5rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-top: 1.5rem;
  animation: fadeIn 0.25s ease;
}

.explanation-card.active {
  display: block;
}

.explanation-title {
  font-size: 0.9rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--brand-primary);
  margin-bottom: 0.35rem;
}

.explanation-text {
  font-size: 0.95rem;
  color: var(--text-primary);
}

/* ==========================================================================
   Quiz Results Screen
   ========================================================================== */
.results-card {
  display: none;
  max-width: 720px;
  margin: 2rem auto 4rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 3rem 2.5rem;
  text-align: center;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.results-card.active {
  display: block;
  animation: fadeIn 0.35s ease;
}

.results-badge-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
  display: inline-block;
  animation: bounce 1.2s infinite;
}

.results-title {
  font-size: 2.25rem;
  font-weight: 900;
  margin-bottom: 0.5rem;
}

.results-rank {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--brand-primary);
  margin-bottom: 1.5rem;
}

.score-circle-wrapper {
  margin: 1.5rem auto 2rem;
  width: 140px;
  height: 140px;
  border-radius: var(--radius-full);
  background: var(--brand-gradient);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  box-shadow: var(--brand-gradient-glow);
}

.score-number {
  font-size: 2.5rem;
  font-weight: 900;
  line-height: 1;
}

.score-total {
  font-size: 0.9rem;
  opacity: 0.85;
}

.results-breakdown-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.breakdown-item {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  padding: 1rem;
  border-radius: var(--radius-md);
}

.breakdown-val {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
}

.breakdown-lbl {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 0.2rem;
}

.results-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ==========================================================================
   Review Answers Modal
   ========================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(6px);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal-overlay.active {
  display: flex;
}

.modal-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 760px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.modal-header {
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-size: 1.35rem;
  font-weight: 800;
}

.modal-body {
  padding: 2rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.review-item {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.review-item.correct {
  border-left: 4px solid var(--success);
}

.review-item.wrong {
  border-left: 4px solid var(--error);
}

.review-q-title {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 0.75rem;
}

.review-ans-row {
  font-size: 0.9rem;
  margin-bottom: 0.35rem;
}

/* ==========================================================================
   Features & Value Prop Section
   ========================================================================== */
.features-section {
  padding: 5rem 0;
  border-top: 1px solid var(--border-color);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.feature-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: var(--transition);
}

.feature-box:hover {
  transform: translateY(-4px);
  border-color: var(--brand-primary);
}

.feature-icon {
  font-size: 2.25rem;
  margin-bottom: 1.25rem;
  display: inline-block;
}

.feature-box h4 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.feature-box p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ==========================================================================
   Newsletter & Daily Trivia Banner
   ========================================================================== */
.daily-banner {
  background: var(--brand-gradient);
  border-radius: var(--radius-lg);
  padding: 3rem 2.5rem;
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  margin: 3rem auto;
  box-shadow: var(--brand-gradient-glow);
  flex-wrap: wrap;
}

.daily-banner-info h3 {
  font-size: 1.75rem;
  font-weight: 900;
  margin-bottom: 0.5rem;
}

.daily-banner-info p {
  opacity: 0.9;
  font-size: 1rem;
}

/* ==========================================================================
   Site Footer
   ========================================================================== */
.site-footer {
  margin-top: auto;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 4.5rem 0 2rem;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-top: 1rem;
  max-width: 320px;
}

.footer-col h5 {
  font-size: 0.95rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
  color: var(--text-primary);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: var(--brand-primary);
  padding-left: 4px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-legal-inline {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

/* ==========================================================================
   Cookie Consent Banner
   ========================================================================== */
.cookie-banner {
  position: fixed;
  bottom: 1.5rem;
  left: 1.5rem;
  right: 1.5rem;
  max-width: 520px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-lg);
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  animation: slideUp 0.3s ease;
}

.cookie-banner.hidden {
  display: none !important;
}

.cookie-banner h4 {
  font-size: 1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.cookie-banner p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.cookie-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Canvas Confetti */
#confetti-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
}

/* ==========================================================================
   Animations & Responsive Breakpoints
   ========================================================================== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.05); }
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@media (max-width: 900px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .nav-links {
    display: none;
  }
  
  .mobile-menu-btn {
    display: flex;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .quiz-setup-card {
    padding: 1.75rem;
  }

  .arena-content {
    padding: 1.5rem;
  }

  .question-text {
    font-size: 1.2rem;
  }

  .hero {
    padding: 3rem 0 2rem;
  }
}