/* China Cities Guide - Styles */

/* CSS Variables */
:root {
  --color-primary: #C41E3A;
  --color-primary-dark: #a01830;
  --color-secondary: #1A1A2E;
  --color-accent: #FFD700;
  --color-bg: #F8F8F8;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-white: #FFFFFF;
  --color-card-bg: #FFFFFF;

  --font-heading-zh: "Noto Serif SC", "Songti SC", serif;
  --font-heading-en: "Playfair Display", "Songti SC", serif;
  --font-body-zh: "Noto Sans SC", "PingFang SC", sans-serif;
  --font-body-en: "Source Sans Pro", "PingFang SC", sans-serif;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 5rem;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  --shadow-sm: 0 2px 4px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.12);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.16);

  --transition: 0.3s ease;
}

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

/* Base */
html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body-zh), var(--font-body-en);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3 {
  font-family: var(--font-heading-zh), var(--font-heading-en);
  font-weight: 700;
  line-height: 1.2;
}

a {
  text-decoration: none;
  color: inherit;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

/* Header */
.header {
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  font-family: var(--font-heading-zh), var(--font-heading-en);
  letter-spacing: 2px;
}

.lang-switch {
  background: var(--color-secondary);
  color: var(--color-white);
  border: none;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  transition: var(--transition);
}

.lang-switch:hover {
  background: var(--color-primary);
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-secondary) 0%, #16213E 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(196, 30, 58, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 215, 0, 0.1) 0%, transparent 40%);
}

.hero-content {
  position: relative;
  text-align: center;
  padding: var(--spacing-xl);
}

.hero-title {
  font-size: clamp(2rem, 6vw, 4rem);
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
  text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.hero-subtitle {
  font-size: clamp(1rem, 3vw, 1.5rem);
  color: rgba(255,255,255,0.85);
  margin-bottom: var(--spacing-lg);
  font-weight: 300;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-secondary:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* Cities Section */
.cities-section {
  padding: var(--spacing-xxl) 0;
}

.section-title {
  font-size: 2rem;
  text-align: center;
  margin-bottom: var(--spacing-xl);
  color: var(--color-secondary);
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--color-primary);
  margin: var(--spacing-sm) auto 0;
}

/* City Grid */
.city-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

/* City Card */
.city-card {
  background: var(--color-card-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: block;
}

.city-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.city-card-image {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.city-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.city-card:hover .city-card-image img {
  transform: scale(1.08);
}

.city-card-image::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60%;
  background: linear-gradient(to top, rgba(0,0,0,0.4), transparent);
}

.city-card-content {
  padding: var(--spacing-md);
}

.city-card-title {
  font-size: 1.5rem;
  color: var(--color-secondary);
  margin-bottom: var(--spacing-xs);
}

.city-card-desc {
  color: var(--color-text-light);
  font-size: 0.95rem;
  margin-bottom: var(--spacing-sm);
  line-height: 1.5;
}

.city-card-link {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.9rem;
}

/* City Detail Page */
.header-small .header-content {
  height: 60px;
}

.city-hero {
  position: relative;
  height: 50vh;
  min-height: 400px;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: flex-end;
}

.city-hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to top, rgba(26, 26, 46, 0.9) 0%, rgba(26, 26, 46, 0.3) 50%, transparent 100%);
}

.city-hero-content {
  position: relative;
  padding-bottom: var(--spacing-xxl);
}

.city-hero-title {
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  color: var(--color-white);
  text-shadow: 0 2px 20px rgba(0,0,0,0.5);
}

.city-hero-subtitle {
  font-size: 1.5rem;
  color: var(--color-accent);
  margin-top: var(--spacing-xs);
  font-weight: 300;
}

.city-content {
  padding: var(--spacing-xxl) 0;
}

.city-info-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  margin-bottom: var(--spacing-lg);
}

.city-info-section {
  margin-bottom: var(--spacing-lg);
}

.city-info-section:last-child {
  margin-bottom: 0;
}

.info-title {
  font-size: 1.25rem;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  padding-bottom: var(--spacing-xs);
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

.info-text {
  color: var(--color-text);
  line-height: 1.8;
  font-size: 1.05rem;
}

/* Footer */
.footer {
  background-color: var(--color-secondary);
  color: rgba(255,255,255,0.7);
  padding: var(--spacing-lg) 0;
  text-align: center;
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
  .header-content {
    height: 60px;
  }

  .logo {
    font-size: 1.2rem;
  }

  .hero {
    min-height: 60vh;
  }

  .city-grid {
    grid-template-columns: 1fr;
  }

  .city-info-card {
    padding: var(--spacing-md);
  }
}

@media (min-width: 640px) and (max-width: 1024px) {
  .city-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.city-card {
  animation: fadeInUp 0.5s ease forwards;
}

.city-card:nth-child(1) { animation-delay: 0.05s; }
.city-card:nth-child(2) { animation-delay: 0.1s; }
.city-card:nth-child(3) { animation-delay: 0.15s; }
.city-card:nth-child(4) { animation-delay: 0.2s; }
.city-card:nth-child(5) { animation-delay: 0.25s; }
.city-card:nth-child(6) { animation-delay: 0.3s; }
.city-card:nth-child(7) { animation-delay: 0.35s; }
.city-card:nth-child(8) { animation-delay: 0.4s; }

/* No JS Fallback */
noscript .lang-switch {
  display: none;
}

/* City Stats */
.city-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.stat-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.stat-icon {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-xs);
}

.stat-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

/* City Card Stats */
.city-card-stats {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.city-card-stats .stat {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.city-card-stats svg {
  width: 16px;
  height: 16px;
}

/* Gallery Button */
.gallery-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--color-secondary);
  color: var(--color-white);
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 1rem;
  transition: var(--transition);
}

.gallery-btn:hover {
  background: var(--color-primary);
}

/* Food Grid */
.food-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--spacing-md);
}

.food-item {
  background: var(--color-bg);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
}

.food-name {
  display: block;
  font-weight: 600;
  color: var(--color-secondary);
  margin-bottom: 0.25rem;
}

.food-desc {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* Attractions Grid */
.attractions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

.attraction-item {
  background: var(--color-bg);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.attraction-item:hover {
  box-shadow: var(--shadow-sm);
}

.attraction-name {
  font-size: 1.1rem;
  color: var(--color-secondary);
  margin-bottom: 0.5rem;
}

.attraction-desc {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 0.5rem;
}

.attraction-tag {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-secondary);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
}

/* Routes */
.routes-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.route-item {
  background: var(--color-bg);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-primary);
}

.route-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: 0.5rem;
}

.route-day {
  background: var(--color-primary);
  color: var(--color-white);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
}

.route-title {
  font-size: 1.1rem;
  color: var(--color-secondary);
}

.route-desc {
  font-size: 0.95rem;
  color: var(--color-text-light);
  margin-bottom: 0.75rem;
}

.route-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.highlight-tag {
  background: var(--color-white);
  color: var(--color-text);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
  border: 1px solid #ddd;
}

/* Reviews */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

.review-card {
  background: var(--color-bg);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
}

.review-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.review-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
}

.review-name {
  font-weight: 600;
  color: var(--color-secondary);
}

.review-country {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.review-rating {
  margin-left: auto;
  color: var(--color-accent);
}

.review-text {
  font-style: italic;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* Tips */
.tips-card {
  background: linear-gradient(135deg, #FFF9E6 0%, #FFF5D6 100%);
}

.tips-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-sm);
}

.tips-list li {
  position: relative;
  padding-left: 1.5rem;
  color: var(--color-text);
}

.tips-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: bold;
}

/* City Hero Tagline */
.city-hero-tagline {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.8);
  margin-top: var(--spacing-xs);
  font-weight: 300;
}

/* Gallery Lightbox */
.gallery-lightbox {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.95);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.gallery-close {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  background: var(--color-white);
  border: none;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  font-size: 2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.gallery-close:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.gallery-content {
  max-width: 1000px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
}

.gallery-title {
  color: var(--color-white);
  text-align: center;
  margin-bottom: var(--spacing-lg);
  font-size: 1.5rem;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--spacing-md);
}

.gallery-item {
  cursor: pointer;
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.gallery-item:hover {
  transform: scale(1.02);
}

.gallery-item img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.gallery-full-image {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--radius-md);
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .city-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .stat-card {
    padding: var(--spacing-sm);
  }

  .stat-value {
    font-size: 1.1rem;
  }

  .food-grid,
  .attractions-grid,
  .reviews-grid {
    grid-template-columns: 1fr;
  }

  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .gallery-item img {
    height: 120px;
  }

  .tips-list {
    grid-template-columns: 1fr;
  }

  .route-highlights {
    flex-direction: column;
  }

  .highlight-tag {
    width: fit-content;
  }
}

/* Chinese Culture Section */
.culture-section {
  background: linear-gradient(135deg, #FFF5E6 0%, #FFECD2 100%);
}

.culture-section .section-title {
  color: var(--color-secondary);
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-light);
  font-size: 1.1rem;
  margin-top: -1rem;
  margin-bottom: var(--spacing-xl);
}

.culture-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-lg);
}

.culture-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.culture-image {
  height: 180px;
  background-size: cover;
  background-position: center;
  position: relative;
}

.culture-content {
  padding: var(--spacing-lg);
}

.culture-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  z-index: 1;
}

.culture-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.culture-name {
  font-size: 1.5rem;
  color: var(--color-secondary);
  margin-bottom: var(--spacing-xs);
  font-family: var(--font-heading-zh), var(--font-heading-en);
}

.culture-desc {
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.culture-full-desc {
  color: var(--color-text-light);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

.culture-link {
  display: inline-block;
  background: linear-gradient(135deg, var(--color-primary) 0%, #E91E63 100%);
  color: var(--color-white);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
}

.culture-link:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 15px rgba(196, 30, 58, 0.4);
}

/* Responsive for culture section */
@media (max-width: 768px) {
  .culture-grid {
    grid-template-columns: 1fr;
  }

  .culture-card {
    padding: var(--spacing-md);
  }

  .culture-icon {
    font-size: 2.5rem;
  }
}