/* ============================================================
   F1 QUIZ — Style.css
   设计系统基于 f1-素材-设计规范.md
   ============================================================ */

/* --- CSS Custom Properties (Design Tokens) --- */
:root {
  /* Brand Colors */
  --c-red: #E10600;
  --c-neon: #00D4FF;
  --c-purple: #8B5CF6;
  --c-silver: #C0C0C0;
  /* Neutrals (Dark) */
  --bg-deep: #0A0A0F;
  --bg-card: #14141F;
  --b-divider: #2A2A3A;
  --t-secondary: #8A8AA0;
  --t-primary: #F5F5FA;
  /* Gradients */
  --grad-cta: linear-gradient(135deg, #E10600 0%, #FF4D00 100%);
  --grad-neon: linear-gradient(135deg, #00D4FF 0%, #8B5CF6 100%);
  --grad-metal: linear-gradient(180deg, #F5F5FA 0%, #C0C0C0 50%, #F5F5FA 100%);
  /* Shadows */
  --shadow-btn: 0 4px 20px rgba(225,6,0,0.4);
  --shadow-card: 0 8px 32px rgba(0,0,0,0.5);
  --shadow-result: 0 16px 48px rgba(0,0,0,0.6);
  /* Typography */
  --font-title: 'Orbitron', 'Rajdhani', sans-serif;
  --font-body: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'DM Mono', 'Courier New', monospace;
  /* Sizing */
  --btn-h-primary: 56px;
  --btn-h-secondary: 48px;
  --radius-card: 20px;
  --radius-result: 24px;
  --radius-btn: 12px;
  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast: 150ms;
  --dur-normal: 300ms;
  --dur-slow: 500ms;
}

/* --- Light Mode Overrides --- */
[data-theme="light"] {
  --bg-deep: #F0F0F5;
  --bg-card: #FFFFFF;
  --b-divider: #D1D1DB;
  --t-secondary: #6B6B80;
  --t-primary: #1A1A2E;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.08);
  --shadow-result: 0 16px 48px rgba(0,0,0,0.12);
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--bg-deep);
  color: var(--t-primary);
  min-height: 100dvh;
  line-height: 1.6;
  overflow-x: hidden;
  transition: background var(--dur-normal) var(--ease-out), color var(--dur-normal) var(--ease-out);
}
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; outline: none; }
a { color: inherit; text-decoration: none; }

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

/* --- App Shell --- */
.app-container {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

/* --- Theme Toggle --- */
.theme-toggle {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 100;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--b-divider);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  transition: all var(--dur-fast) var(--ease-out);
}
.theme-toggle:hover { border-color: var(--c-neon); transform: scale(1.1); }

/* --- View Container --- */
.view {
  display: none;
  flex-direction: column;
  flex: 1;
  padding: 24px 20px;
  opacity: 0;
  transition: opacity var(--dur-normal) var(--ease-out);
}
.view.active {
  display: flex;
  opacity: 1;
}

/* ============================================================
   WELCOME PAGE
   ============================================================ */
.welcome-page {
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 32px;
  padding-top: 60px;
  padding-bottom: 40px;
}

/* Decorative racing elements */
.welcome-decor {
  position: relative;
  width: 100%;
  height: 120px;
  margin-bottom: 8px;
}
.track-lines {
  position: absolute;
  bottom: 0;
  left: 50%;
  translate: -50% 0;
  width: 80%;
  height: 4px;
  background: var(--b-divider);
  border-radius: 2px;
  overflow: hidden;
}
.track-lines::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-neon);
  animation: trackPulse 2s ease-in-out infinite;
}
.track-lines::after {
  content: '';
  position: absolute;
  top: -8px;
  left: 0;
  width: 20px;
  height: 20px;
  background: var(--c-red);
  clip-path: polygon(0 50%, 100% 0, 100% 100%);
  animation: carRace 3s ease-in-out infinite;
}
@keyframes trackPulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}
@keyframes carRace {
  0% { left: 0%; }
  100% { left: calc(100% - 20px); }
}

.welcome-logo {
  font-family: var(--font-title);
  font-size: 14px;
  letter-spacing: 4px;
  color: var(--c-neon);
  text-transform: uppercase;
  margin-bottom: 4px;
  animation: fadeInUp 0.6s var(--ease-out) both;
}

.welcome-title {
  font-family: var(--font-title);
  font-size: clamp(28px, 8vw, 48px);
  font-weight: 900;
  line-height: 1.1;
  background: var(--grad-metal);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fadeInUp 0.6s 0.1s var(--ease-out) both;
}
.welcome-title .highlight {
  -webkit-text-fill-color: var(--c-red);
  background: none;
}

.welcome-subtitle {
  font-size: 18px;
  color: var(--t-secondary);
  font-weight: 500;
  max-width: 340px;
  animation: fadeInUp 0.6s 0.2s var(--ease-out) both;
}

.welcome-intro {
  font-size: 14px;
  color: var(--t-secondary);
  line-height: 1.7;
  max-width: 380px;
  animation: fadeInUp 0.6s 0.3s var(--ease-out) both;
}

.welcome-meta {
  display: flex;
  gap: 16px;
  font-size: 13px;
  color: var(--t-secondary);
  animation: fadeInUp 0.6s 0.35s var(--ease-out) both;
}
.welcome-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Primary CTA Button */
.btn-primary {
  height: var(--btn-h-primary);
  padding: 0 32px;
  border-radius: var(--radius-btn);
  background: var(--grad-cta);
  color: #F5F5FA;
  font-size: 18px;
  font-weight: 600;
  box-shadow: var(--shadow-btn);
  transition: all var(--dur-fast) var(--ease-out);
  display: flex;
  align-items: center;
  gap: 8px;
  animation: fadeInUp 0.6s 0.4s var(--ease-out) both;
  position: relative;
  overflow: hidden;
}
.btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(255,255,255,0.15) 50%, transparent 100%);
  translate: -100% 0;
  transition: translate 0.4s var(--ease-out);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(225,6,0,0.5);
}
.btn-primary:hover::after { translate: 100% 0; }
.btn-primary:active { transform: translateY(0) scale(0.98); }

.btn-primary .arrow {
  font-size: 20px;
  transition: transform var(--dur-fast) var(--ease-out);
}
.btn-primary:hover .arrow { transform: translateX(4px); }

.welcome-disclaimer {
  font-size: 11px;
  color: var(--t-secondary);
  opacity: 0.6;
  max-width: 320px;
  animation: fadeInUp 0.6s 0.5s var(--ease-out) both;
}

/* --- Car Gallery on Welcome Page --- */
.car-gallery {
  width: 100%;
  max-width: 400px;
  margin-top: 8px;
  display: flex;
  gap: 4px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 8px;
  animation: fadeInUp 0.6s 0.55s var(--ease-out) both;
}
.car-gallery::-webkit-scrollbar { height: 4px; }
.car-gallery::-webkit-scrollbar-thumb { background: var(--b-divider); border-radius: 2px; }
.car-gallery-item {
  flex: 0 0 130px;
  scroll-snap-align: start;
  border-radius: 12px;
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--b-divider);
  transition: all var(--dur-fast) var(--ease-out);
}
.car-gallery-item:hover {
  border-color: var(--c-neon);
  transform: translateY(-2px);
}
.car-gallery-item img {
  width: 100%;
  height: 55px;
  object-fit: contain;
  padding: 4px;
  background: #111;
}

/* --- Entrance Animations --- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}
@keyframes slideInRight {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ============================================================
   QUIZ PAGE
   ============================================================ */
.quiz-page { gap: 20px; padding-top: 16px; }

/* Progress Bar */
.progress-section {
  display: flex;
  align-items: center;
  gap: 12px;
}
.progress-label {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--t-secondary);
  white-space: nowrap;
}
.progress-track {
  flex: 1;
  height: 8px;
  background: var(--b-divider);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}
.progress-fill {
  height: 100%;
  background: var(--grad-neon);
  border-radius: 4px;
  transition: width 0.5s var(--ease-in-out);
  position: relative;
}
.progress-fill::after {
  content: '';
  position: absolute;
  right: -4px;
  top: 50%;
  translate: 0 -50%;
  width: 0;
  height: 0;
  border-left: 10px solid var(--c-neon);
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  filter: drop-shadow(0 0 4px var(--c-neon));
}

.progress-hint {
  text-align: center;
  font-size: 13px;
  color: var(--c-neon);
  min-height: 20px;
  transition: all var(--dur-normal) var(--ease-out);
}

/* Question Card */
.question-card {
  background: var(--bg-card);
  border-radius: var(--radius-card);
  padding: 32px 24px;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(0, 212, 255, 0.08);
  transition: all var(--dur-normal) var(--ease-out);
  position: relative;
}
.question-card.entering {
  animation: scaleIn 0.35s var(--ease-out);
}
.question-card.exiting {
  animation: fadeOutLeft 0.25s var(--ease-in-out) forwards;
}
@keyframes fadeOutLeft {
  to { opacity: 0; transform: translateX(-20px); }
}

.question-group-tag {
  display: inline-block;
  font-size: 11px;
  color: var(--c-purple);
  background: rgba(139, 92, 246, 0.1);
  padding: 4px 10px;
  border-radius: 20px;
  margin-bottom: 8px;
  letter-spacing: 1px;
}

/* Quiz Back Button */
.quiz-back-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: transparent;
  border: 1px solid var(--b-divider);
  border-radius: 8px;
  color: var(--t-secondary);
  font-size: 13px;
  padding: 6px 14px;
  margin-bottom: 8px;
  transition: all var(--dur-fast) var(--ease-out);
  cursor: pointer;
}
.quiz-back-btn:hover {
  border-color: var(--c-purple);
  color: var(--c-purple);
  background: rgba(139, 92, 246, 0.06);
}
.quiz-back-btn:active { transform: scale(0.96); }

.question-text {
  font-family: var(--font-body);
  font-size: clamp(17px, 4vw, 20px);
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 24px;
}

/* Option Buttons */
.options-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.option-btn {
  width: 100%;
  background: transparent;
  border: 1px solid var(--b-divider);
  border-radius: 12px;
  padding: 14px 18px;
  color: var(--t-primary);
  font-size: 15px;
  font-weight: 400;
  text-align: left;
  line-height: 1.5;
  transition: all var(--dur-fast) var(--ease-out);
  display: flex;
  align-items: flex-start;
  gap: 12px;
  position: relative;
}
.option-btn .option-key {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  color: var(--c-neon);
  background: rgba(0, 212, 255, 0.1);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--dur-fast) var(--ease-out);
}
.option-btn:hover {
  border-color: var(--c-neon);
  background: rgba(0, 212, 255, 0.05);
  transform: scale(1.02);
}
.option-btn:hover .option-key {
  background: var(--c-neon);
  color: var(--bg-deep);
}
.option-btn:active { transform: scale(0.97); }
.option-btn.selected {
  border-color: var(--c-neon);
  background: rgba(0, 212, 255, 0.08);
}
.option-btn.selected .option-key {
  background: var(--c-neon);
  color: var(--bg-deep);
}

/* Question Nav */
.question-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--t-secondary);
}
.question-nav .current {
  font-size: 24px;
  font-weight: 700;
  color: var(--t-primary);
}

/* ============================================================
   LOADING SCREEN
   ============================================================ */
.loading-page {
  align-items: center;
  justify-content: center;
  gap: 32px;
  text-align: center;
}

.loading-spinner {
  position: relative;
  width: 80px;
  height: 80px;
}
.spinner-ring {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 3px solid var(--b-divider);
  border-top-color: var(--c-neon);
  animation: spin 1s linear infinite;
}
.spinner-inner {
  position: absolute;
  inset: 10px;
  border-radius: 50%;
  border: 3px solid var(--b-divider);
  border-bottom-color: var(--c-red);
  animation: spin 0.8s linear infinite reverse;
}
@keyframes spin { to { transform: rotate(360deg); } }

.loading-text {
  font-family: var(--font-title);
  font-size: 18px;
  color: var(--t-primary);
  letter-spacing: 1px;
}
.loading-sub {
  font-size: 14px;
  color: var(--t-secondary);
  animation: fadeIn 0.5s var(--ease-out);
}

/* ============================================================
   RESULT PAGE
   ============================================================ */
.result-page { gap: 24px; padding-bottom: 40px; }

/* Result Header */
.result-header {
  text-align: center;
  opacity: 0;
  transform: translateY(20px);
}
.result-header.show {
  animation: fadeInUp 0.5s var(--ease-out) forwards;
}
.result-badge {
  display: inline-block;
  font-size: 12px;
  color: var(--c-neon);
  background: rgba(0, 212, 255, 0.1);
  padding: 6px 16px;
  border-radius: 20px;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

/* Main Result Card */
.result-main-card {
  background: var(--bg-card);
  border-radius: var(--radius-result);
  padding: 0;
  box-shadow: var(--shadow-result);
  overflow: hidden;
  opacity: 0;
  transform: translateY(20px);
}
.result-main-card.show {
  animation: fadeInUp 0.5s 0.15s var(--ease-out) forwards;
}

.result-card-accent {
  height: 6px;
  width: 100%;
  background: var(--grad-cta);
}

.result-card-body {
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

/* Driver Avatar */
.driver-avatar-wrap {
  position: relative;
  width: 140px;
  height: 140px;
}
.driver-avatar-ring {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  padding: 3px;
  background: var(--grad-neon);
}
.driver-avatar-inner {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--bg-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}
.driver-avatar-inner .avatar-text {
  font-family: var(--font-title);
  font-size: 48px;
  font-weight: 900;
  color: var(--t-primary);
}
/* Driver real photo in avatar circle */
.driver-photo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  border-radius: 50%;
  display: block;
}

/* Car body image on result card */
.car-image-wrap {
  width: 100%;
  margin-top: 8px;
  border-radius: 12px;
  overflow: hidden;
  background: #111;
  border: 1px solid var(--b-divider);
}
.car-body-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
}

/* Team Logo */
.team-logo-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 4px;
}
.team-logo-img {
  height: 32px;
  width: auto;
  max-width: 200px;
  object-fit: contain;
}

/* Match Percent */
.match-percent {
  font-family: var(--font-mono);
  font-size: 64px;
  font-weight: 700;
  line-height: 1;
  background: var(--grad-neon);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Driver Name & Team */
.result-driver-name {
  font-family: var(--font-title);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 1px;
  text-align: center;
}
.result-driver-name-en {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  color: var(--t-secondary);
  text-align: center;
  margin-top: -12px;
}
/* Driver 3-letter code badge */
.driver-code-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  padding: 3px 12px;
  border-radius: 6px;
  letter-spacing: 3px;
  margin-top: -8px;
}
.result-driver-team {
  font-size: 14px;
  color: var(--t-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}
.result-driver-team .team-flag {
  font-size: 16px;
}

/* Match Slogan */
.result-slogan {
  font-size: 16px;
  font-weight: 600;
  color: var(--c-neon);
  text-align: center;
}

/* Tags */
.result-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}
.result-tag {
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 20px;
  background: rgba(0, 212, 255, 0.08);
  color: var(--c-neon);
  border: 1px solid rgba(0, 212, 255, 0.15);
}

/* ============================================================
   RADAR CHART
   ============================================================ */
.radar-section {
  background: var(--bg-card);
  border-radius: var(--radius-card);
  padding: 24px 20px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--b-divider);
  opacity: 0;
  transform: translateY(20px);
  text-align: center;
}
.radar-section.show {
  animation: fadeInUp 0.5s 0.35s var(--ease-out) forwards;
}
.radar-section h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--c-neon);
}
.radar-container {
  width: 100%;
  max-width: 340px;
  margin: 0 auto;
}
.radar-legend {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-top: 8px;
  font-size: 12px;
  color: var(--t-secondary);
}
.radar-legend span {
  display: flex;
  align-items: center;
  gap: 6px;
}
.radar-legend .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}
.radar-legend .dot-you { background: var(--c-neon); }
.radar-legend .dot-driver { background: var(--c-red); }

/* ============================================================
   DESCRIPTION CARD
   ============================================================ */
.result-desc-card {
  background: var(--bg-card);
  border-radius: var(--radius-card);
  padding: 24px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--b-divider);
  opacity: 0;
  transform: translateY(20px);
}
.result-desc-card.show {
  animation: fadeInUp 0.5s 0.45s var(--ease-out) forwards;
}
.result-desc-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--c-neon);
}
.result-desc-card p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--t-secondary);
}
.result-desc-card .easter-egg {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--b-divider);
  font-size: 13px;
  color: var(--c-purple);
  font-style: italic;
}

/* ============================================================
   TOP3 SECTION
   ============================================================ */
.top3-section {
  opacity: 0;
  transform: translateY(20px);
}
.top3-section.show {
  animation: fadeInUp 0.5s 0.55s var(--ease-out) forwards;
}
.top3-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--t-primary);
  text-align: center;
}
.top3-list {
  display: flex;
  gap: 12px;
}
.top3-item {
  flex: 1;
  background: var(--bg-card);
  border-radius: 16px;
  padding: 16px 12px;
  text-align: center;
  border: 1px solid var(--b-divider);
  transition: all var(--dur-fast) var(--ease-out);
}
.top3-item:hover {
  border-color: var(--c-neon);
  transform: translateY(-2px);
}
.top3-item .top3-rank {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--c-neon);
  margin-bottom: 4px;
}
.top3-item .top3-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  margin: 0 auto 8px;
  background: var(--b-divider);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.top3-photo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}
.top3-item .top3-name {
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 1px;
  line-height: 1.2;
}
.top3-item .top3-name-en {
  font-size: 10px;
  color: var(--t-secondary);
  margin-bottom: 2px;
}
.top3-item .top3-team {
  font-size: 11px;
  color: var(--t-secondary);
  margin-bottom: 4px;
}
.top3-item .top3-percent {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--c-neon);
}

/* ============================================================
   SHARE SECTION
   ============================================================ */
.share-section {
  opacity: 0;
  transform: translateY(20px);
  text-align: center;
}
.share-section.show {
  animation: fadeInUp 0.5s 0.7s var(--ease-out) forwards;
}
.share-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
}
.share-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.share-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--b-divider);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  transition: all var(--dur-fast) var(--ease-out);
}
.share-btn:hover { transform: scale(1.08); }
.share-btn.wechat:hover { background: #07C160; border-color: #07C160; color: #fff; }
.share-btn.weibo:hover { background: #E6162D; border-color: #E6162D; color: #fff; }
.share-btn.twitter:hover { background: #000; border-color: #fff; color: #fff; }
.share-btn.copy:hover { background: var(--c-neon); border-color: var(--c-neon); color: var(--bg-deep); }

/* Retest Button */
.btn-retest {
  height: var(--btn-h-secondary);
  padding: 0 24px;
  border-radius: var(--radius-btn);
  background: transparent;
  border: 1px solid var(--b-divider);
  color: var(--t-primary);
  font-size: 16px;
  font-weight: 500;
  transition: all var(--dur-fast) var(--ease-out);
  opacity: 0;
  transform: translateY(20px);
}
.btn-retest.show {
  animation: fadeInUp 0.5s 0.85s var(--ease-out) forwards;
}
.btn-retest:hover {
  border-color: var(--c-neon);
  color: var(--c-neon);
}

/* ============================================================
   WECHAT MODAL
   ============================================================ */
.wechat-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-normal) var(--ease-out);
}
.wechat-modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}
.wechat-modal {
  background: var(--bg-card);
  border-radius: 20px;
  padding: 32px 24px;
  text-align: center;
  max-width: 300px;
  width: 90%;
  border: 1px solid var(--b-divider);
  box-shadow: var(--shadow-result);
}
.wechat-modal .modal-icon { font-size: 48px; margin-bottom: 12px; }
.wechat-modal p {
  font-size: 15px;
  line-height: 1.6;
  color: var(--t-secondary);
  margin-bottom: 16px;
}
.wechat-modal .modal-close {
  padding: 8px 24px;
  border-radius: 8px;
  background: var(--c-neon);
  color: var(--bg-deep);
  font-size: 14px;
  font-weight: 600;
}

/* ============================================================
   TOAST
   ============================================================ */
.toast {
  position: fixed;
  bottom: 40px;
  left: 50%;
  translate: -50% 0;
  background: var(--bg-card);
  border: 1px solid var(--c-neon);
  color: var(--t-primary);
  padding: 12px 24px;
  border-radius: 12px;
  font-size: 14px;
  z-index: 300;
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--dur-normal) var(--ease-out);
  pointer-events: none;
}
.toast.show {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (min-width: 768px) {
  .app-container { max-width: 520px; }
  .welcome-page { padding-top: 80px; }
  .question-card { padding: 36px 32px; }
}

@media (min-width: 1024px) {
  .app-container { max-width: 560px; }
}

/* ============================================================
   POSTER PREVIEW MODAL (WeChat long-press save)
   ============================================================ */
.poster-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.poster-modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}
.poster-modal {
  background: var(--bg-card);
  border-radius: 20px;
  max-width: 440px;
  width: 94%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--b-divider);
  box-shadow: var(--shadow-result);
  overflow: hidden;
}
.poster-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--b-divider);
}
.poster-modal-title {
  font-size: 16px;
  font-weight: 600;
}
.poster-modal-close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: transparent;
  border: 1px solid var(--b-divider);
  color: var(--t-secondary);
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}
.poster-modal-close:hover {
  border-color: var(--c-neon);
  color: var(--c-neon);
}
.poster-modal-body {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  text-align: center;
  -webkit-overflow-scrolling: touch;
}
.poster-modal-hint {
  font-size: 13px;
  color: #00D4FF;
  margin-bottom: 12px;
  animation: fadeIn 0.5s ease;
}
.poster-modal-img {
  width: 100%;
  border-radius: 12px;
  display: block;
  -webkit-touch-callout: default;
  user-select: auto;
  -webkit-user-select: auto;
}
.poster-modal-footer {
  display: flex;
  gap: 12px;
  padding: 12px 20px 20px;
  border-top: 1px solid var(--b-divider);
}
.poster-modal-dl,
.poster-modal-ok {
  flex: 1;
  height: 44px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}
.poster-modal-dl {
  background: var(--grad-neon);
  color: #0A0A0F;
}
.poster-modal-dl:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}
.poster-modal-ok {
  background: transparent;
  color: var(--t-secondary);
  border: 1px solid var(--b-divider);
}
.poster-modal-ok:hover {
  border-color: var(--c-neon);
  color: var(--c-neon);
}

/* ============================================================
   POSTER PRINT (html2canvas capture)
   ============================================================ */
.poster-print {
  position: fixed;
  left: -9999px;
  top: 0;
  width: 480px;
  background: #0A0A0F;
  color: #F5F5FA;
  z-index: -1;
  padding: 20px 20px 30px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.poster-print .result-header,
.poster-print .result-main-card,
.poster-print .radar-section,
.poster-print .result-desc-card,
.poster-print .top3-section,
.poster-print .share-section,
.poster-print .btn-retest {
  opacity: 1 !important;
  transform: none !important;
  animation: none !important;
}
.poster-print .share-section { display: none; }
.poster-print .btn-retest { display: none; }
.poster-print .theme-toggle { display: none; }

/* QR section inside poster */
.poster-qr {
  text-align: center;
  padding: 16px 0;
  border-top: 1px solid rgba(255,255,255,0.08);
  margin-top: 4px;
}
.poster-qr canvas,
.poster-qr img {
  display: block;
  margin: 0 auto 12px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.1);
}
.poster-qr .qr-cta {
  font-size: 18px;
  font-weight: 700;
  color: #F5F5FA;
}
.poster-qr .qr-url {
  font-size: 11px;
  color: #8A8AA0;
  margin-top: 4px;
  word-break: break-all;
}
.poster-watermark {
  text-align: center;
  font-family: 'Orbitron', 'Rajdhani', sans-serif;
  font-size: 32px;
  font-weight: 900;
  color: rgba(255,255,255,0.04);
  letter-spacing: 4px;
  padding-bottom: 12px;
}

/* Poster overrides — fix html2canvas: use hardcoded colors */
.poster-print .match-percent {
  background: none !important;
  -webkit-background-clip: unset !important;
  -webkit-text-fill-color: #00D4FF !important;
  background-clip: unset !important;
  color: #00D4FF !important;
}
.poster-print .result-driver-name {
  color: #F5F5FA !important;
}
.poster-print .result-slogan {
  color: #00D4FF !important;
}
.poster-print .result-tag {
  color: #00D4FF !important;
  border-color: rgba(0, 212, 255, 0.15) !important;
}
.poster-print .driver-code-badge {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  text-align: center !important;
  color: #FFFFFF !important;
  font-size: 18px !important;
  font-weight: 700 !important;
  padding: 4px 14px !important;
  border-radius: 6px !important;
  letter-spacing: 3px !important;
  line-height: 1.2 !important;
  margin-top: -6px !important;
}
.poster-print .top3-percent {
  color: #00D4FF !important;
}
.poster-print .top3-rank {
  color: #00D4FF !important;
}
.poster-print .result-driver-name-en {
  color: #8A8AA0 !important;
}
.poster-print .result-driver-team {
  color: #8A8AA0 !important;
}
.poster-print .result-desc-card p {
  color: #8A8AA0 !important;
}
.poster-print .result-desc-card h3 {
  color: #00D4FF !important;
}
.poster-print .easter-egg {
  color: #8B5CF6 !important;
}
.poster-print .result-badge {
  color: #00D4FF !important;
  background: rgba(0, 212, 255, 0.1) !important;
}
.poster-print .radar-section h3 {
  color: #00D4FF !important;
}
.poster-print .radar-legend {
  color: #8A8AA0 !important;
}
.poster-print .top3-title {
  color: #F5F5FA !important;
}
.poster-print .poster-qr .qr-cta {
  color: #F5F5FA !important;
}
.poster-print .poster-qr .qr-url {
  color: #8A8AA0 !important;
}
.poster-print .top3-name {
  color: #F5F5FA !important;
}
.poster-print .top3-name-en {
  color: #8A8AA0 !important;
}

/* ============================================================
   POSTER CANVAS (Hidden)
   ============================================================ */
#posterCanvas {
  position: fixed;
  top: -9999px;
  left: -9999px;
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}