/* ============================================================
   景山庭院 JINGSHAN COURTYARD — 核心组件样式
   Core Component Styles (补全 P0 缺失样式)
   ============================================================ */

/* ========== Section Header ========== */
.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}
.section-label {
  display: inline-block;
  font-family: var(--font-en-sans);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: var(--space-sm);
}
.section-header h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  font-weight: 400;
  color: var(--deep-ink);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.05em;
}
.section-header p {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--mid-ink);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ========== Grid Auto (JS 动态卡片容器) ========== */
.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-2xl);
}

/* ========== Room Card ========== */
.room-card {
  background: var(--snow);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 2px 12px var(--color-shadow);
  transition: transform var(--transition-breath),
              box-shadow var(--transition-breath);
  cursor: pointer;
}
.room-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 36px rgba(26,35,39,0.13);
}
.room-card-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--cloud);
}
.room-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--ease-out-quart);
}
.room-card:hover .room-card-image img {
  transform: scale(1.06);
}
.room-card-badge {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  background: var(--amber);
  color: var(--snow);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 400;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.04em;
}
.room-card-body {
  padding: var(--space-lg);
}
.room-card-body h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--deep-ink);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.03em;
}
.room-desc {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  color: var(--mid-ink);
  line-height: 1.7;
  margin-bottom: var(--space-md);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.room-features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}
.room-feature {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--mid-ink);
}
.feat-icon {
  color: var(--amber);
  font-size: 0.7rem;
}
.room-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}
.room-price {
  font-family: var(--font-en-serif);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--amber);
}
.room-price small {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--smoke);
  margin-left: 2px;
}
.room-card-more {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--mid-ink);
  transition: color var(--transition-fast);
}
.room-card:hover .room-card-more {
  color: var(--amber);
}

/* ========== Review Card ========== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-xl);
}
.review-card {
  background: var(--snow);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  box-shadow: 0 2px 8px var(--color-shadow);
  transition: transform var(--transition-breath),
              box-shadow var(--transition-breath);
}
.review-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(26,35,39,0.1);
}
.review-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--space-md);
}
.reviewer {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.reviewer-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--cloud);
  color: var(--mid-ink);
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.reviewer-info h4 {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--deep-ink);
  margin: 0 0 4px 0;
}
.review-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.review-meta .stars {
  color: var(--amber);
  font-size: 0.8rem;
  letter-spacing: 1px;
  white-space: nowrap;
}
.review-date {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  color: var(--smoke);
}
.stars {
  color: var(--amber);
  font-size: 0.85rem;
  letter-spacing: 1px;
  white-space: nowrap;
}
.review-text {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  font-style: italic;
  color: var(--dark-ink);
  line-height: 1.8;
  margin: 0;
}

/* ========== Attraction Card ========== */
.attraction-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-xl);
}
.attraction-card {
  background: var(--snow);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 2px 8px var(--color-shadow);
  transition: transform var(--transition-breath),
              box-shadow var(--transition-breath);
}
.attraction-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(26,35,39,0.1);
}
.attraction-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  transition: transform 0.7s var(--ease-out-quart);
}
.attraction-card:hover img {
  transform: scale(1.05);
}
.attraction-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}
.attraction-card-body {
  padding: var(--space-lg);
}
.attraction-card-body h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--deep-ink);
  margin-bottom: var(--space-sm);
}
.attraction-card-body p {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--mid-ink);
  line-height: 1.7;
}
.attraction-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}
.attraction-meta span {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--amber);
  background: rgba(212,160,86,0.08);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

/* ========== FAQ Item — 呼吸式展开 ========== */
.faq-list {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}
.faq-item {
  background: var(--snow);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  transition: box-shadow var(--transition-breath),
              transform var(--transition-breath);
  box-shadow: 0 1px 4px var(--color-shadow);
}
.faq-item:hover {
  box-shadow: 0 4px 16px var(--color-shadow);
  transform: translateY(-1px);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--deep-ink);
  gap: var(--space-md);
  transition: color var(--transition-fast);
}
.faq-item.open .faq-question {
  color: var(--amber);
}
.faq-toggle {
  font-family: var(--font-en-serif);
  font-size: 1.2rem;
  color: var(--amber);
  flex-shrink: 0;
  transition: transform var(--transition-breath);
  line-height: 1;
}
.faq-item.open .faq-toggle {
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.55s var(--ease-out-quart),
              padding 0.55s var(--ease-out-quart);
  padding: 0 var(--space-lg);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--mid-ink);
  line-height: 1.8;
}
.faq-answer p {
  margin: 0;
}
.faq-item.open .faq-answer {
  max-height: 500px;
  padding: 0 var(--space-lg) var(--space-lg);
}

/* ========== Skeleton Loading ========== */
.skeleton {
  background: linear-gradient(90deg, var(--cloud) 25%, var(--snow) 50%, var(--cloud) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
.skeleton-card {
  height: 380px;
}
.skeleton-text {
  height: 16px;
  margin-bottom: 8px;
  width: 80%;
}
.skeleton-text:last-child {
  width: 60%;
}
.skeleton-title {
  height: 24px;
  width: 60%;
  margin-bottom: 12px;
}

/* ========== Back to Top ========== */
.back-to-top {
  position: fixed;
  bottom: var(--space-2xl);
  right: var(--space-2xl);
  z-index: 999;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--amber);
  color: var(--snow);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
  transition: all var(--transition-smooth);
  box-shadow: 0 4px 14px rgba(212,160,86,0.35);
}
.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.back-to-top:hover {
  background: var(--gold);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(200,154,63,0.4);
}

/* ========== Micro-interactions — 呼吸感增强 ========== */
/* 通用按钮动效增强 */
.btn-primary:active,
.btn-submit:active,
.hero-cta:active {
  transform: scale(0.96);
  transition: transform 0.1s var(--ease-out-quart);
}
.btn-outline:active {
  transform: scale(0.96);
  transition: transform 0.1s var(--ease-out-quart);
}

/* 按钮 hover 呼吸光晕 */
.btn-primary,
.btn-submit {
  position: relative;
  overflow: hidden;
  transition: all var(--transition-breath);
}
.btn-primary::after,
.btn-submit::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(255,255,255,0.2) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-breath);
}
.btn-primary:hover,
.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(212,160,86,0.3);
}
.btn-primary:hover::after,
.btn-submit:hover::after {
  opacity: 1;
}

/* 卡片聚焦态 */
.room-card:focus-visible,
.review-card:focus-visible,
.attraction-card:focus-visible,
.faq-item:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

/* 图片懒加载过渡 */
img[loading="lazy"] {
  opacity: 0;
  transition: opacity 0.5s var(--ease-out-quart);
}
img[loading="lazy"].loaded {
  opacity: 1;
}

/* 表单内联验证样式 */
.form-group input.error,
.form-group select.error,
.form-group textarea.error {
  border-bottom-color: var(--seal-red);
  animation: shake 0.4s var(--ease-out-quart);
}
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%      { transform: translateX(-4px); }
  40%      { transform: translateX(4px); }
  60%      { transform: translateX(-3px); }
  80%      { transform: translateX(3px); }
}
.form-error {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--seal-red);
  margin-top: 4px;
  display: none;
}
.form-error.visible {
  display: block;
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
  .grid-auto {
    grid-template-columns: 1fr;
  }
  .reviews-grid {
    grid-template-columns: 1fr;
  }
  .attraction-cards {
    grid-template-columns: 1fr;
  }
  .back-to-top {
    bottom: var(--space-lg);
    right: var(--space-lg);
    width: 40px;
    height: 40px;
  }
}

@media (max-width: 480px) {
  .section-header {
    margin-bottom: var(--space-2xl);
  }
  .room-card-body {
    padding: var(--space-md);
  }
  .review-card {
    padding: var(--space-md);
  }
  .faq-question {
    padding: var(--space-md);
    font-size: 0.9rem;
  }
}