/* ===================================
   MOBILE EXPERIENCE OPTIMIZATIONS
   =================================== */

/* Mobile-First Base Styles */
@media (max-width: 768px) {
  /* Bottom Navigation Bar */
  .mobile-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--border-subtle);
    padding: 0.5rem 0;
    display: flex;
    justify-content: space-around;
    align-items: center;
    z-index: 100;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.4);
  }

  .mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    padding: 0.5rem 1rem;
    color: var(--text-tertiary);
    text-decoration: none;
    font-size: 0.75rem;
    transition: color 0.2s ease;
    min-width: 60px;
    min-height: 60px;
    justify-content: center;
  }

  .mobile-nav-item.active {
    color: var(--accent-primary);
  }

  .mobile-nav-item svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
  }

  /* Add padding to main content to account for bottom nav */
  main {
    padding-bottom: 80px;
  }

  /* Swipeable Carousel */
  .swipeable-carousel {
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    display: flex;
    gap: 1rem;
    padding: 1rem;
  }

  .swipeable-carousel::-webkit-scrollbar {
    display: none;
  }

  .carousel-item {
    scroll-snap-align: start;
    flex-shrink: 0;
    width: 80%;
  }

  /* Pull to Refresh */
  .pull-to-refresh {
    position: relative;
    overflow: hidden;
  }

  .pull-to-refresh-indicator {
    position: absolute;
    top: -60px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: top 0.3s ease;
  }

  .pull-to-refresh.pulling .pull-to-refresh-indicator {
    top: 10px;
  }

  .pull-to-refresh-spinner {
    width: 30px;
    height: 30px;
    border: 3px solid var(--bg-tertiary);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
  }

  /* Touch-Optimized Spacing */
  .touch-optimized {
    padding: 1rem;
  }

  .touch-target {
    min-width: 44px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  /* Mobile Header Adjustments */
  header {
    padding: 0.75rem 1rem;
  }

  header .logo h1 {
    font-size: 1.25rem;
  }

  .circle-icon {
    width: 32px;
    height: 32px;
    font-size: 1rem;
  }

  /* Mobile Search */
  #searchInput.active {
    width: calc(100vw - 120px);
    max-width: 280px;
  }

  /* Mobile Video Grid */
  .video-list {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.875rem;
  }

  /* Mobile Card Adjustments */
  .video-card {
    border-radius: 8px;
  }

  .video-card .info {
    padding: 0.75rem;
  }

  .video-card .info h3 {
    font-size: 0.9rem;
    height: 2.6em;
  }

  /* Mobile Tabs */
  .tabs-container {
    padding: 0.5rem 1rem;
    gap: 0.375rem;
  }

  .tab-button {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
  }

  /* Mobile Hero Section */
  .hero-section {
    margin-top: 0;
  }

  .hero-content {
    padding: 1.5rem;
    min-height: 350px;
  }

  .hero-title {
    font-size: 1.75rem;
    max-width: 100%;
  }

  .hero-description {
    font-size: 0.95rem;
    max-width: 100%;
  }

  /* Mobile Modals */
  .modal-card {
    width: 95%;
    max-width: none;
    margin: 1rem;
  }

  /* Mobile Forms */
  input,
  textarea,
  select {
    font-size: 16px; /* Prevents zoom on iOS */
  }

  /* Mobile Buttons */
  .btn {
    padding: 0.75rem 1.25rem;
    font-size: 0.95rem;
  }

  /* Horizontal Scroll Indicators */
  .scroll-container {
    position: relative;
  }

  .scroll-indicator {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
  }

  .scroll-indicator.visible {
    opacity: 1;
  }

  .scroll-indicator.left {
    left: 10px;
  }

  .scroll-indicator.right {
    right: 10px;
  }

  .scroll-indicator svg {
    width: 20px;
    height: 20px;
    fill: white;
  }

  /* Mobile Toast Notifications */
  .toast-container {
    left: 10px;
    right: 10px;
    top: auto;
    bottom: 90px;
  }

  .toast {
    min-width: auto;
    max-width: none;
  }

  /* Mobile Player Controls */
  .custom-controls {
    padding: 1rem 0.75rem 0.75rem;
  }

  .controls-row {
    gap: 0.5rem;
  }

  .control-btn {
    padding: 0.375rem;
  }

  .control-btn svg {
    width: 20px;
    height: 20px;
  }

  .control-btn.play-pause svg {
    width: 28px;
    height: 28px;
  }

  /* Mobile Gestures */
  .gesture-overlay {
    position: fixed;
    inset: 0;
    z-index: 9998;
    touch-action: none;
  }

  /* Swipe Indicators */
  .swipe-indicator {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    padding: 1rem 1.5rem;
    border-radius: 12px;
    color: white;
    font-size: 1rem;
    font-weight: 600;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
    z-index: 9999;
  }

  .swipe-indicator.visible {
    opacity: 1;
  }

  /* Mobile Footer */
  footer {
    padding: 2rem 1rem;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  /* Thumb-Friendly Spacing */
  .thumb-zone-left,
  .thumb-zone-right {
    padding: 1rem;
  }

  /* Mobile Breadcrumb */
  .breadcrumb {
    font-size: 0.8rem;
    padding: 0.5rem 0;
  }

  .breadcrumb-separator svg {
    width: 14px;
    height: 14px;
  }

  /* Mobile Empty States */
  .empty-state {
    padding: 2rem 1rem;
    min-height: 300px;
  }

  .empty-state-icon {
    width: 80px;
    height: 80px;
  }

  .empty-state-title {
    font-size: 1.25rem;
  }

  .empty-state-description {
    font-size: 0.9rem;
  }

  /* Mobile Error Pages */
  .error-code {
    font-size: 5rem;
  }

  .error-title {
    font-size: 1.5rem;
  }

  .error-description {
    font-size: 0.95rem;
  }

  /* Mobile Filter Section */
  .filter-section {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .filter-chips {
    width: 100%;
  }

  /* Mobile Sort Dropdown */
  .sort-dropdown {
    width: 100%;
  }

  .sort-button {
    width: 100%;
    justify-content: space-between;
  }

  .sort-menu {
    left: 0;
    right: 0;
  }

  /* Safe Area Insets for Notched Devices */
  @supports (padding: max(0px)) {
    header {
      padding-left: max(1rem, env(safe-area-inset-left));
      padding-right: max(1rem, env(safe-area-inset-right));
    }

    .mobile-bottom-nav {
      padding-bottom: max(0.5rem, env(safe-area-inset-bottom));
    }

    main {
      padding-left: max(2rem, env(safe-area-inset-left));
      padding-right: max(2rem, env(safe-area-inset-right));
    }
  }
}

/* Tablet Adjustments (768px - 1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
  .video-list {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.125rem;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-description {
    font-size: 1rem;
  }
}

/* Landscape Mobile */
@media (max-width: 768px) and (orientation: landscape) {
  .hero-content {
    min-height: 250px;
  }

  .hero-title {
    font-size: 1.5rem;
  }

  .hero-description {
    font-size: 0.85rem;
  }

  .mobile-bottom-nav {
    padding: 0.375rem 0;
  }

  .mobile-nav-item {
    padding: 0.375rem 0.75rem;
    min-height: 50px;
  }
}

/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {
  /* Increase touch targets */
  button,
  .btn,
  a.btn,
  .icon-button {
    min-width: 44px;
    min-height: 44px;
  }

  /* Remove hover effects on touch devices */
  .video-card:hover {
    transform: none;
  }

  /* Show controls by default on touch */
  .custom-controls {
    opacity: 1;
  }

  /* Larger tap targets for player controls */
  .control-btn {
    min-width: 48px;
    min-height: 48px;
  }
}

/* Prevent Text Selection on Touch */
.no-select {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

/* Smooth Scrolling for Mobile */
.smooth-scroll {
  -webkit-overflow-scrolling: touch;
  scroll-behavior: smooth;
}

/* Hide Scrollbars on Mobile */
.hide-scrollbar {
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.hide-scrollbar::-webkit-scrollbar {
  display: none;
}

/* Mobile Loading States */
@media (max-width: 768px) {
  .skeleton-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.875rem;
  }

  .loading-overlay__content {
    padding: 1.5rem;
  }
}