:root {
  --bg-dark: #0f0f0f;
  --card-bg: #1f1f1f;
  --accent-red: #ff0033;
  --accent-hover: #cc0029;
  --text-main: #f1f1f1;
  --text-muted: #aaaaaa;
  --border-color: #333333;
  --chip-bg: #272727;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Navbar */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background-color: rgba(15, 15, 15, 0.95);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border-color);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon-svg {
  width: 34px;
  height: 34px;
  filter: drop-shadow(0 0 8px rgba(247, 127, 0, 0.5));
  flex-shrink: 0;
}

.logo-text-group {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo-title {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.logo-subtitle {
  font-size: 0.48rem;
  font-weight: 600;
  color: #f77f00;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  opacity: 0.9;
  margin-top: -1px;
}

.highlight {
  color: var(--accent-red);
}

.search-bar-container {
  display: flex;
  align-items: center;
  width: 45%;
  max-width: 600px;
}

.search-bar-container input {
  width: 100%;
  padding: 10px 16px;
  background-color: #121212;
  border: 1px solid var(--border-color);
  border-radius: 20px 0 0 20px;
  color: #fff;
  outline: none;
  font-size: 0.95rem;
}

.search-bar-container input:focus {
  border-color: #3ea6ff;
}

.search-bar-container button {
  padding: 10px 20px;
  background-color: #222222;
  border: 1px solid var(--border-color);
  border-left: none;
  border-radius: 0 20px 20px 0;
  color: #fff;
  cursor: pointer;
  transition: 0.2s;
}

.search-bar-container button:hover {
  background-color: #333333;
}

.nav-actions {
  display: flex;
  gap: 10px;
}

.nav-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 8px 16px;
  border-radius: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}

.nav-btn.active, .nav-btn:hover {
  background: #272727;
}

/* Main Container */
.main-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px;
}

.categories-wrapper {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  width: 100%;
  max-width: 100%;
  min-width: 0;
}

/* Categories */
.categories {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 8px;
  margin-bottom: 0;
  min-width: 0;
  flex: 1;
}

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

.chip {
  background-color: var(--chip-bg);
  border: none;
  color: var(--text-main);
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
  white-space: nowrap;
  font-weight: 500;
  transition: 0.2s;
}

.chip:hover, .chip.active {
  background-color: #fff;
  color: #000;
}

#btn-pin-search {
  background: #272727;
  color: #3ea6ff;
  border: 1px solid rgba(62, 166, 255, 0.3);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  flex-shrink: 0;
}

#btn-pin-search:hover {
  background: #3ea6ff;
  color: #000;
}

/* Video Grid */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.video-card {
  background-color: var(--card-bg);
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
  position: relative;
  user-select: none;
  touch-action: pan-y;
}

.video-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}

.thumbnail-box {
  position: relative;
  width: 100%;
  padding-top: 56.25%; /* 16:9 */
  background: #000;
}

.thumbnail-box img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.duration-badge {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0, 0, 0, 0.85);
  color: #fff;
  font-size: 0.75rem;
  padding: 3px 6px;
  border-radius: 4px;
  font-weight: 600;
}

.card-details {
  padding: 12px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.video-title {
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.channel-name {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 4px;
}

.video-stats {
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* Modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal.hidden {
  display: none;
}

.modal-backdrop {
  position: absolute;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background: #1e1e1e;
  width: 90%;
  max-width: 900px;
  border-radius: 16px;
  overflow: hidden;
  z-index: 10;
  box-shadow: 0 10px 40px rgba(0,0,0,0.8);
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(0,0,0,0.6);
  border: none;
  color: #fff;
  font-size: 1.2rem;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  cursor: pointer;
  z-index: 20;
}

.player-wrapper {
  position: relative;
  padding-top: 56.25%;
  background: #000;
}

.player-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.modal-body .video-info {
  padding: 20px;
}

.meta-row {
  display: flex;
  gap: 20px;
  color: var(--text-muted);
  margin: 10px 0 16px;
}

/* Loader */
.loader {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 40px;
  gap: 12px;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid #333;
  border-top-color: var(--accent-red);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.hidden {
  display: none !important;
}

/* Settings Modal */
.settings-content {
  max-width: 580px;
  max-height: 90vh;
  overflow-y: auto;
}

.settings-header {
  padding: 24px 24px 16px;
  border-bottom: 1px solid var(--border-color);
}

.settings-header h2 {
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 4px;
}

.settings-subtitle {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.settings-body {
  padding: 20px 24px;
}

.settings-section {
  margin-bottom: 28px;
}

.settings-section h3 {
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.setting-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
  gap: 16px;
  flex-wrap: wrap;
}

.setting-item:last-child {
  border-bottom: none;
}

.setting-info {
  flex: 1;
  min-width: 200px;
}

.setting-label {
  display: block;
  font-weight: 500;
  font-size: 0.95rem;
}

.setting-desc {
  display: block;
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-top: 2px;
}

/* Toggle Switch */
.setting-item input[type="checkbox"] {
  display: none;
}

.toggle-slider {
  position: relative;
  width: 52px;
  height: 28px;
  background: #333;
  border-radius: 14px;
  cursor: pointer;
  transition: 0.2s;
  flex-shrink: 0;
}

.toggle-slider::before {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 22px;
  height: 22px;
  background: #fff;
  border-radius: 50%;
  transition: 0.2s;
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.setting-item input[type="checkbox"]:checked + .toggle-slider {
  background: var(--accent-red);
}

.setting-item input[type="checkbox"]:checked + .toggle-slider::before {
  transform: translateX(24px);
}

/* Buttons */
.btn-primary, .btn-secondary, .btn-small {
  padding: 10px 20px;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: none;
  transition: 0.2s;
}

.btn-primary {
  background: var(--accent-red);
  color: #fff;
}

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

.btn-secondary {
  background: #272727;
  color: #fff;
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: #333;
}

.btn-small {
  padding: 8px 14px;
  font-size: 0.85rem;
}

.settings-footer {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  padding: 20px 24px;
  border-top: 1px solid var(--border-color);
}

/* Fluid Responsive */
@media (max-width: 1200px) {
  .search-bar-container {
    width: 36%;
  }
  .nav-btn .nav-label {
    display: none;
  }
  .nav-btn {
    padding: 8px 12px;
    border-radius: 50%;
    width: 38px;
    height: 38px;
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .navbar {
    padding: 10px 14px;
    gap: 10px;
    flex-wrap: nowrap;
  }
  .search-bar-container {
    flex: 1;
    width: auto;
    max-width: none;
  }
  .search-bar-container input {
    padding: 8px 12px;
    font-size: 0.85rem;
  }
  .search-bar-container button {
    padding: 8px 14px;
  }

  .nav-actions {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: rgba(18, 18, 18, 0.98);
    backdrop-filter: blur(12px);
    border-top: 1px solid var(--border-color);
    padding: 6px 4px;
    justify-content: space-around;
    z-index: 999;
    gap: 0;
  }
  .nav-btn {
    border: none;
    background: transparent;
    flex-direction: column;
    gap: 3px;
    padding: 4px;
    border-radius: 8px;
    width: auto;
    height: auto;
    color: var(--text-muted);
  }
  .nav-btn i {
    font-size: 1.15rem;
  }
  .nav-btn .nav-label {
    display: block;
    font-size: 0.65rem;
    font-weight: 500;
  }
  .nav-btn.active {
    color: var(--accent-red);
    background: transparent;
  }
  .nav-btn:hover {
    background: transparent;
  }
  body {
    padding-bottom: 64px;
  }

  .main-container {
    padding: 12px;
  }
  .categories-wrapper {
    flex-direction: column;
    align-items: stretch;
  }
  #btn-pin-search {
    align-self: flex-end;
    padding: 6px 12px;
    font-size: 0.8rem;
  }
  .video-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 12px;
  }
  .video-title {
    font-size: 0.85rem;
  }
  .modal-content {
    width: 96%;
    max-height: 92vh;
    overflow-y: auto;
  }
  .modal-body .video-info {
    padding: 14px;
  }
  .modal-actions-bar {
    gap: 6px;
  }
  .btn-action-pill {
    padding: 6px 12px !important;
    font-size: 0.75rem !important;
  }
}

@media (max-width: 480px) {
  .logo-title {
    font-size: 1.05rem;
  }
  .logo-icon {
    font-size: 1.3rem;
  }
  .video-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

.kids-badge {
  background: linear-gradient(135deg, #00e5ff, #0088ff);
  color: #000;
  font-size: 0.65rem;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  box-shadow: 0 2px 8px rgba(0, 229, 255, 0.4);
}

.card-hide-btn {
  position: absolute;
  top: 8px;
  left: 8px;
  background: rgba(0, 0, 0, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ccc;
  border-radius: 50%;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transition: 0.2s opacity, 0.2s background, 0.2s color;
  z-index: 10;
}

.video-card:hover .card-hide-btn {
  opacity: 1;
}

.card-hide-btn:hover {
  background: var(--accent-red);
  color: #fff;
  border-color: var(--accent-red);
}

@media (max-width: 768px) {
  .card-hide-btn {
    opacity: 0.9;
  }
}

.swipe-indicator {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 100%;
  display: flex;
  align-items: center;
  padding: 0 20px;
  font-weight: 700;
  font-size: 0.85rem;
  color: #fff;
  border-radius: 12px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease;
  z-index: 5;
}

.swipe-indicator.swipe-left {
  background: linear-gradient(90deg, transparent, rgba(255, 0, 51, 0.9));
  justify-content: flex-end;
}

.swipe-indicator.swipe-right {
  background: linear-gradient(90deg, rgba(0, 136, 255, 0.9), transparent);
  justify-content: flex-start;
}