/* 问答页专用样式 */

main {
  min-height: calc(100vh - var(--header-h));
}

/* ── 开始界面 ─────────────────────────────────────── */
.quiz-start {
  min-height: calc(100vh - var(--header-h));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(2rem, 6vw, 5rem) clamp(1.5rem, 5vw, 3rem);
  position: relative;
  overflow: hidden;
}

.quiz-start-body {
  max-width: 42rem;
  text-align: center;
  animation: fade-up 0.9s var(--ease-out) both;
}

.quiz-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 1rem;
}

.quiz-title {
  margin: 0 0 1.25rem;
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 6vw, 3.8rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--ink);
  line-height: 1.15;
}

.quiz-lead {
  margin: 0 0 2rem;
  font-size: clamp(1rem, 2vw, 1.1rem);
  color: var(--ink-muted);
  line-height: 1.7;
  max-width: 30em;
  margin-left: auto;
  margin-right: auto;
}

.quiz-meta {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  margin-bottom: 2.5rem;
}

.quiz-meta-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--ink-muted);
  padding: 0.35rem 0.85rem;
  background: var(--bg-card);
  border-radius: 999px;
  border: 1px solid rgba(26, 26, 26, 0.06);
}

.quiz-meta-icon {
  color: var(--gold);
  font-size: 0.9rem;
}

.quiz-start-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.9rem 2.5rem;
  font-size: 1rem;
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--bg-paper);
  background: linear-gradient(135deg, var(--c-palace) 0%, #a02f22 100%);
  border: none;
  border-radius: 50px;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(194, 58, 43, 0.3);
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s;
}

.quiz-start-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(194, 58, 43, 0.4);
}

.quiz-start-btn:active {
  transform: translateY(0);
}

.quiz-start-btn-arrow {
  font-size: 1.1rem;
  transition: transform 0.2s;
}

.quiz-start-btn:hover .quiz-start-btn-arrow {
  transform: translateX(3px);
}

/* 装饰元素 */
.quiz-start-decoration {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.deco-item {
  position: absolute;
  font-family: var(--font-serif);
  font-weight: 700;
  color: rgba(26, 26, 26, 0.03);
  font-size: clamp(4rem, 10vw, 8rem);
  animation: deco-float 6s ease-in-out infinite;
}

.deco-1 { top: 10%; left: 8%; animation-delay: 0s; }
.deco-2 { top: 20%; right: 10%; animation-delay: 1.5s; }
.deco-3 { bottom: 15%; left: 12%; animation-delay: 3s; }
.deco-4 { bottom: 25%; right: 8%; animation-delay: 4.5s; }

@keyframes deco-float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-15px) rotate(3deg); }
}

/* ── 答题界面 ─────────────────────────────────────── */
.quiz-game {
  max-width: 46rem;
  margin: 0 auto;
  padding: clamp(2rem, 5vw, 3rem) clamp(1rem, 4vw, 2rem);
  animation: fade-up 0.7s var(--ease-out) both;
}

.quiz-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 1.75rem;
}

.quiz-progress {
  flex: 1;
  max-width: 20rem;
}

.quiz-progress-label {
  font-size: 0.8rem;
  color: var(--ink-muted);
  margin-bottom: 0.4rem;
  display: block;
}

.quiz-progress-bar {
  height: 6px;
  background: rgba(26, 26, 26, 0.08);
  border-radius: 999px;
  overflow: hidden;
}

.quiz-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--c-palace), var(--gold));
  border-radius: 999px;
  transition: width 0.4s var(--ease-out);
  width: 10%;
}

.quiz-score {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--c-palace);
}

.score-icon {
  font-size: 1rem;
}

/* 题目卡片 */
.quiz-card {
  background: var(--bg-card);
  border-radius: 16px;
  padding: clamp(1.5rem, 4vw, 2.25rem);
  border: 1px solid rgba(26, 26, 26, 0.06);
  box-shadow: 0 4px 24px rgba(26, 26, 26, 0.06);
  margin-bottom: 1.5rem;
}

.quiz-category-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--bg-paper);
  background: var(--ink-muted);
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}

.quiz-question {
  margin: 0 0 1.5rem;
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  font-weight: 600;
  letter-spacing: 0.03em;
  line-height: 1.6;
  color: var(--ink);
}

.quiz-options {
  display: grid;
  gap: 0.75rem;
}

.quiz-option {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 1rem 1.25rem;
  background: var(--bg-paper);
  border: 2px solid rgba(26, 26, 26, 0.08);
  border-radius: 12px;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
  text-align: left;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--ink);
  width: 100%;
}

.quiz-option:hover:not(:disabled) {
  border-color: var(--gold);
  background: rgba(212, 168, 75, 0.05);
  transform: translateX(4px);
}

.quiz-option:disabled {
  cursor: not-allowed;
}

.quiz-option.selected {
  border-color: var(--c-gov);
  background: rgba(45, 74, 94, 0.08);
}

.quiz-option.correct {
  border-color: #3a8a5c;
  background: rgba(58, 138, 92, 0.1);
}

.quiz-option.wrong {
  border-color: var(--c-palace);
  background: rgba(194, 58, 43, 0.08);
}

.option-letter {
  width: 1.75rem;
  height: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 700;
  background: rgba(26, 26, 26, 0.06);
  border-radius: 6px;
  flex-shrink: 0;
  transition: background 0.2s, color 0.2s;
}

.quiz-option.selected .option-letter {
  background: var(--c-gov);
  color: white;
}

.quiz-option.correct .option-letter {
  background: #3a8a5c;
  color: white;
}

.quiz-option.wrong .option-letter {
  background: var(--c-palace);
  color: white;
}

.option-text {
  flex: 1;
  line-height: 1.5;
}

/* 反馈区域 */
.quiz-feedback {
  background: var(--bg-card);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
  border: 1px solid rgba(26, 26, 26, 0.06);
  animation: fade-up 0.4s var(--ease-out) both;
}

.quiz-feedback[hidden] {
  display: none;
}

.feedback-icon {
  font-size: 1.5rem;
  margin-bottom: 0.4rem;
}

.feedback-text {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.feedback-text.correct {
  color: #3a8a5c;
}

.feedback-text.wrong {
  color: var(--c-palace);
}

.feedback-explain {
  font-size: 0.88rem;
  color: var(--ink-muted);
  line-height: 1.65;
}

/* 操作按钮 */
.quiz-actions {
  text-align: center;
}

.quiz-next-btn {
  padding: 0.75rem 2.5rem;
  font-size: 0.95rem;
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--bg-paper);
  background: var(--ink);
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s, opacity 0.2s;
}

.quiz-next-btn:hover:not(:disabled) {
  background: var(--c-gov);
  transform: translateY(-1px);
}

.quiz-next-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ── 结果界面 ─────────────────────────────────────── */
.quiz-result {
  min-height: calc(100vh - var(--header-h));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(2rem, 6vw, 5rem) clamp(1rem, 4vw, 2rem);
}

.quiz-result[hidden] {
  display: none;
}

.result-card {
  max-width: 28rem;
  width: 100%;
  background: var(--bg-card);
  border-radius: 20px;
  padding: clamp(2rem, 5vw, 3rem);
  border: 1px solid rgba(26, 26, 26, 0.06);
  box-shadow: 0 8px 40px rgba(26, 26, 26, 0.08);
  text-align: center;
  animation: fade-up 0.8s var(--ease-out) both;
}

.result-badge {
  font-size: 3.5rem;
  margin-bottom: 0.5rem;
  line-height: 1;
}

.result-title {
  margin: 0 0 1.5rem;
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.result-score {
  margin-bottom: 0.75rem;
}

.result-score-num {
  font-family: var(--font-serif);
  font-size: 4rem;
  font-weight: 700;
  color: var(--c-palace);
  line-height: 1;
}

.result-score-total {
  font-size: 1.25rem;
  color: var(--ink-muted);
  margin-left: 0.25rem;
}

.result-desc {
  font-size: 0.92rem;
  color: var(--ink-muted);
  margin: 0 0 1.75rem;
  line-height: 1.6;
}

.result-stats {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
  padding: 1.25rem;
  background: var(--bg-paper);
  border-radius: 12px;
}

.stat-item {
  text-align: center;
}

.stat-num {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--ink);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--ink-muted);
}

.result-actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.result-btn {
  display: block;
  padding: 0.85rem 1.5rem;
  font-size: 0.95rem;
  font-family: var(--font-sans);
  font-weight: 600;
  text-decoration: none;
  border-radius: 50px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.result-btn-primary {
  color: var(--bg-paper);
  background: linear-gradient(135deg, var(--c-palace) 0%, #a02f22 100%);
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(194, 58, 43, 0.25);
}

.result-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(194, 58, 43, 0.35);
}

.result-btn-secondary {
  color: var(--ink);
  background: transparent;
  border: 2px solid rgba(26, 26, 26, 0.15);
}

.result-btn-secondary:hover {
  border-color: var(--ink);
  background: rgba(26, 26, 26, 0.04);
}

/* ── 响应式 ─────────────────────────────────────── */
@media (min-width: 640px) {
  .result-actions {
    flex-direction: row;
  }

  .result-btn {
    flex: 1;
  }
}

@media (min-width: 900px) {
  .site-nav {
    display: flex;
  }

  .nav-toggle {
    display: none;
  }

  .mobile-nav {
    display: none !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  .quiz-start-body,
  .quiz-game,
  .result-card,
  .deco-item {
    animation: none !important;
  }

  .quiz-start-btn:hover,
  .quiz-option:hover:not(:disabled),
  .quiz-next-btn:hover:not(:disabled),
  .result-btn-primary:hover,
  .result-btn-secondary:hover {
    transform: none;
  }
}