/* =============================================  
 * 简游网 - 响应式样式
 * JianYou Travel - Responsive CSS
 * ============================================= */

/* Tablet (768px - 1024px) */
@media (max-width: 1024px) {
  .container {
    padding: 0 24px;
  }

  .banner h1 {
    font-size: 36px;
  }

  .banner p {
    font-size: 18px;
  }

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

  .city-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }

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

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

/* Mobile (max-width: 768px) */
@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }

  /* Navigation */
  .main-nav .container {
    flex-wrap: wrap;
    height: auto;
    padding: 12px 16px;
  }

  .logo {
    font-size: 20px;
  }

  .nav-menu {
    display: none;
    order: 3;
    width: 100%;
    flex-direction: column;
    padding: 12px 0;
    gap: 4px;
  }

  .nav-menu.active {
    display: flex;
  }

  .nav-menu li {
    width: 100%;
  }

  .nav-menu a {
    padding: 12px 16px;
    display: block;
    width: 100%;
  }

  .dropdown-menu {
    position: static;
    box-shadow: none;
    background: var(--bg-secondary);
    margin: 0 16px;
  }

  .nav-right {
    margin-left: auto;
    gap: 8px;
  }

  .lang-selector {
    padding: 6px 8px;
    font-size: 12px;
  }

  .btn-link {
    display: none;
  }

  .btn-primary {
    padding: 8px 16px;
    font-size: 14px;
  }

  /* Mobile Menu Toggle */
  .mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 8px;
    cursor: pointer;
    margin-left: auto;
  }

  .mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
  }

  /* Banner */
  .banner {
    padding: 60px 16px;
  }

  .banner h1 {
    font-size: 32px;
    line-height: 1.3;
  }

  .banner p {
    font-size: 16px;
  }

  /* Cards */
  .cards-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .card {
    padding: 20px;
  }

  /* Tools */
  .tools-section {
    padding: 40px 0;
  }

  .tool-card {
    padding: 24px;
  }

  .converter-input {
    flex-direction: column;
  }

  .converter-input input,
  .converter-input select {
    width: 100%;
  }

  .converter-arrow {
    transform: rotate(90deg);
  }

  /* Cities */
  .popular-cities {
    padding: 40px 0;
  }

  .popular-cities h2,
  .china-map-section h2 {
    font-size: 28px;
  }

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

  .city-card {
    margin-bottom: 16px;
  }

  /* Provinces */
  .china-map-section {
    padding: 40px 0;
  }

  .province-items {
    grid-template-columns: 1fr;
  }

  /* Scenic & Food Cards */
  .scenic-grid,
  .food-grid {
    grid-template-columns: 1fr;
  }

  /* Footer */
  .footer-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    font-size: 12px;
  }

  /* Search Overlay */
  .search-overlay {
    padding-top: 80px;
  }

  .search-container {
    margin: 0 16px;
    max-width: calc(100% - 32px);
  }

  .search-header {
    padding: 12px 16px;
  }

  .search-header input {
    font-size: 16px;
  }

  /* Back to Top */
  .back-to-top {
    width: 44px;
    height: 44px;
    bottom: 20px;
    right: 20px;
    font-size: 20px;
  }

  /* Tabs */
  .tab-nav {
    gap: 8px;
  }

  .tab-nav a {
    padding: 10px 16px;
    font-size: 12px;
  }

  /* Membership */
  .membership-grid {
    grid-template-columns: 1fr;
  }

  /* Sections */
  .section {
    padding: 32px 0;
  }

  .section-title {
    font-size: 24px;
  }
}

/* Small Mobile (max-width: 480px) */
@media (max-width: 480px) {
  .container {
    padding: 0 12px;
  }

  .banner h1 {
    font-size: 28px;
  }

  .banner p {
    font-size: 14px;
  }

  .logo {
    font-size: 18px;
  }

  .nav-right {
    gap: 4px;
  }

  .btn-primary {
    padding: 6px 12px;
    font-size: 12px;
  }

  .card h3 {
    font-size: 18px;
  }

  .city-info h3 {
    font-size: 18px;
  }

  .city-name-en {
    display: block;
    margin-left: 0;
    margin-top: 4px;
    font-size: 12px;
  }

  .city-tags {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .city-tags .tag {
    white-space: nowrap;
  }

  /* Scenic Card */
  .scenic-info h4 {
    font-size: 16px;
  }

  /* Tool Card */
  .tool-card h3 {
    font-size: 18px;
  }

  /* Membership */
  .membership-header h3 {
    font-size: 20px;
  }

  .membership-price .price {
    font-size: 28px;
  }

  /* Province Items */
  .province-item {
    padding: 10px 12px;
    font-size: 14px;
  }

  .province-name-en {
    font-size: 10px;
  }

  /* Social Icons */
  .social-icon {
    width: 36px;
    height: 36px;
    font-size: 12px;
  }

  /* Alert */
  .alert {
    padding: 12px 16px;
    font-size: 14px;
  }

  /* Badge */
  .badge {
    padding: 2px 8px;
    font-size: 11px;
  }

  /* Buttons */
  .btn {
    padding: 10px 20px;
    font-size: 14px;
  }
}

/* Print Styles */
@media print {
  .main-nav,
  .search-overlay,
  .back-to-top,
  .social-links,
  .btn {
    display: none;
  }

  .banner {
    background: white;
    color: black;
    border-bottom: 1px solid #000;
  }

  .city-card,
  .scenic-card,
  .food-card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ccc;
  }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  /* Improve image quality for retina displays */
  .city-image img,
  .scenic-image img,
  .food-image img {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
  }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --border-color: #404040;
    --border-light: #3d3d3d;
  }

  .main-nav,
  .card,
  .tool-card,
  .city-card,
  .scenic-card,
  .food-card,
  .province-group,
  .membership-card,
  .footer-section {
    background: var(--bg-primary);
  }

  .province-item {
    background: var(--bg-secondary);
  }

  .search-overlay {
    background: rgba(0, 0, 0, 0.95);
  }

  .search-container {
    background: var(--bg-primary);
  }

  input,
  select,
  textarea {
    background: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
  }

  input:focus,
  select:focus,
  textarea:focus {
    border-color: var(--primary-light);
  }
}

/* Landscape Orientation on Mobile */
@media (max-width: 768px) and (orientation: landscape) {
  .banner {
    padding: 40px 16px;
  }

  .banner h1 {
    font-size: 24px;
  }

  .banner p {
    font-size: 14px;
  }

  .popular-cities h2,
  .china-map-section h2 {
    font-size: 24px;
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Accessibility - Focus Visible */
@media (focus-visible) {
  a:focus-visible,
  button:focus-visible,
  input:focus-visible,
  select:focus-visible,
  textarea:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
  }
}

/* Large Desktop (min-width: 1920px) */
@media (min-width: 1920px) {
  .container {
    max-width: 1400px;
  }

  .banner h1 {
    font-size: 56px;
  }

  .banner p {
    font-size: 24px;
  }

  .popular-cities h2,
  .china-map-section h2 {
    font-size: 42px;
  }

  .city-grid {
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  }

  .scenic-grid,
  .food-grid {
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  }
}

/* Ultra-wide (min-width: 2560px) */
@media (min-width: 2560px) {
  .container {
    max-width: 1600px;
  }

  .banner h1 {
    font-size: 64px;
  }

  .banner p {
    font-size: 28px;
  }

  .city-grid {
    grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
  }
}

/* Modal Overlay on Mobile */
@media (max-width: 768px) {
  .modal-overlay {
    padding: 16px;
  }

  .modal-content {
    max-width: 100%;
    margin: 0;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  }
}

/* Horizontal Scroll for Tabs on Mobile */
@media (max-width: 768px) {
  .tab-nav {
    overflow-x: auto;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .tab-nav::-webkit-scrollbar {
    display: none;
  }

  .tab-nav a {
    flex-shrink: 0;
  }
}