* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-primary: #0f0f0f;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #222222;
  --bg-hover: #2a2a2a;
  --text-primary: #ffffff;
  --text-secondary: #aaaaaa;
  --text-muted: #717171;
  --accent: #ff0000;
  --accent-hover: #cc0000;
  --border: #3a3a3a;
  --shadow-light: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-medium: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-heavy: 0 8px 24px rgba(0,0,0,0.5);
  --radius: 12px;
  --radius-small: 8px;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Header dengan design yang lebih menarik */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: rgba(15, 15, 15, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 20px;
  z-index: 1000;
  box-shadow: var(--shadow-medium);
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: var(--text-primary);
  margin-right: 40px;
  transition: var(--transition);
}

.logo:hover {
  transform: scale(1.05);
}

.logo i {
  font-size: 28px;
  color: var(--accent);
  margin-right: 10px;
  filter: drop-shadow(0 0 8px rgba(255, 0, 0, 0.3));
}

.logo-text {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -1px;
  background: linear-gradient(45deg, #ff0000, #ff4444);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.search-container {
  flex: 1;
  max-width: 600px;
  margin: 0 auto;
  position: relative;
}

.search-form {
  display: flex;
  background: var(--bg-secondary);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--shadow-light);
  transition: var(--transition);
}

.search-form:focus-within {
  box-shadow: 0 0 0 2px rgba(255, 0, 0, 0.3);
  transform: translateY(-1px);
}

.search-input {
  flex: 1;
  padding: 12px 20px;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 400;
  outline: none;
}

.search-input::placeholder {
  color: var(--text-muted);
}

.search-button {
  padding: 12px 20px;
  border: none;
  background: var(--accent);
  color: white;
  cursor: pointer;
  transition: var(--transition);
  font-size: 16px;
  min-width: 60px;
}

.search-button:hover {
  background: var(--accent-hover);
  transform: scale(1.05);
}

/* Main content dengan spacing yang lebih baik */
.main-content {
  margin-top: 80px;
  padding: 20px;
  max-width: 1400px;
  margin-left: auto;
  margin-right: auto;
}

.section-title {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 24px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-title i {
  color: var(--accent);
  font-size: 20px;
}

/* Video grid yang lebih responsif */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
  margin-bottom: 40px;
}

/* Video card dengan design yang lebih menarik */
.video-card {
  background: var(--bg-secondary);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
  border: 1px solid transparent;
}

.video-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-heavy);
  border-color: rgba(255, 0, 0, 0.2);
}

/* Thumbnail dengan loading yang lebih cepat */
.video-thumbnail {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #1a1a1a, #2a2a2a);
  overflow: hidden;
  border-radius: var(--radius) var(--radius) 0 0;
}

.thumbnail-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
  cursor: pointer;
}

.thumbnail-image:hover {
  transform: scale(1.05);
}

.play-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0, 0, 0, 0.8);
  border-radius: 50%;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  opacity: 0;
}

.video-card:hover .play-overlay {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1.1);
}

.play-overlay i {
  color: white;
  font-size: 24px;
  margin-left: 3px;
}

.video-player {
  width: 100%;
  height: 100%;
  border: none;
  border-radius: var(--radius) var(--radius) 0 0;
}

.watermark {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(0, 0, 0, 0.9);
  color: white;
  padding: 6px 12px;
  border-radius: var(--radius-small);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  pointer-events: none;
  z-index: 20;
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 0, 0, 0.3);
}

.duration-badge {
  position: absolute;
  bottom: 10px;
  left: 10px;
  background: rgba(0, 0, 0, 0.9);
  color: white;
  padding: 4px 8px;
  border-radius: var(--radius-small);
  font-size: 12px;
  font-weight: 500;
}

/* Video info dengan typography yang lebih baik */
.video-info {
  padding: 16px;
}

.video-title {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 8px;
  color: var(--text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: var(--transition);
}

.video-card:hover .video-title {
  color: var(--accent);
}

.video-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 6px;
}

.channel-name {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
  transition: var(--transition);
}

.channel-name:hover {
  color: var(--text-primary);
}

.video-stats {
  font-size: 14px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.stats-separator {
  width: 3px;
  height: 3px;
  background: var(--text-muted);
  border-radius: 50%;
}

/* Loading states yang lebih menarik */
.loading-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px;
  grid-column: 1 / -1;
}

.loading-spinner {
  width: 50px;
  height: 50px;
  border: 4px solid var(--bg-tertiary);
  border-top: 4px solid var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 16px;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.loading-text {
  color: var(--text-secondary);
  font-size: 18px;
  font-weight: 500;
}

/* Error states yang lebih user-friendly */
.error-overlay {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #ff4444, #cc0000);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: white;
  text-align: center;
  padding: 20px;
  border-radius: var(--radius) var(--radius) 0 0;
}

.error-icon {
  font-size: 32px;
  margin-bottom: 12px;
  opacity: 0.9;
}

.error-text {
  font-size: 14px;
  font-weight: 500;
  line-height: 1.4;
}

.retry-button {
  margin-top: 12px;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: white;
  border-radius: var(--radius-small);
  cursor: pointer;
  font-size: 12px;
  font-weight: 500;
  transition: var(--transition);
}

.retry-button:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 80px 20px;
  color: var(--text-secondary);
  grid-column: 1 / -1;
}

.empty-icon {
  font-size: 64px;
  margin-bottom: 20px;
  opacity: 0.5;
  color: var(--text-muted);
}

.empty-title {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.empty-description {
  font-size: 16px;
  color: var(--text-secondary);
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  text-align: center;
  padding: 40px 20px;
  margin-top: 60px;
  border-top: 1px solid var(--border);
}

.footer-content {
  max-width: 800px;
  margin: 0 auto;
}

.footer-text {
  color: var(--text-muted);
  font-size: 14px;
}

/* Responsive improvements */
@media (max-width: 1200px) {
  .video-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 16px;
  }
}

@media (max-width: 768px) {
  .header {
    padding: 0 16px;
    height: 56px;
  }
  
  .logo {
    margin-right: 16px;
  }
  
  .logo-text {
    font-size: 20px;
  }
  
  .main-content {
    margin-top: 72px;
    padding: 16px;
  }
  
  .section-title {
    font-size: 20px;
  }
  
  .video-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 12px;
  }
  
  .search-form {
    border-radius: 20px;
  }
  
  .search-input {
    padding: 10px 16px;
    font-size: 16px;
  }
  
  .search-button {
    padding: 10px 16px;
  }
}

@media (max-width: 480px) {
  .header {
    padding: 0 12px;
  }
  
  .logo i {
    font-size: 24px;
    margin-right: 8px;
  }
  
  .logo-text {
    font-size: 18px;
  }
  
  .main-content {
    padding: 12px;
  }
  
  .video-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .video-card {
    max-width: 100%;
  }
  
  .section-title {
    font-size: 18px;
    margin-bottom: 16px;
  }
}

/* Fullscreen enhancements */
.fullscreen-watermark {
  position: fixed !important;
  bottom: 80px !important;
  right: 40px !important;
  font-size: 16px !important;
  padding: 12px 20px !important;
  z-index: 2147483647 !important;
  background: rgba(0, 0, 0, 0.9) !important;
  backdrop-filter: blur(8px) !important;
}

/* Skeleton loading untuk performance */
.skeleton {
  background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-hover) 50%, var(--bg-tertiary) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-card {
  background: var(--bg-secondary);
  border-radius: var(--radius);
  overflow: hidden;
}

.skeleton-thumbnail {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--bg-tertiary);
}

.skeleton-info {
  padding: 16px;
}

.skeleton-title {
  height: 20px;
  background: var(--bg-tertiary);
  border-radius: 4px;
  margin-bottom: 8px;
}

.skeleton-meta {
  height: 16px;
  background: var(--bg-tertiary);
  border-radius: 4px;
  width: 70%;
}

/* Improved focus states untuk accessibility */
.video-card:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.search-input:focus {
  outline: none;
}

.search-button:focus {
  outline: 2px solid rgba(255, 255, 255, 0.5);
  outline-offset: 2px;
}

/* Smooth animations */
@media (prefers-reduced-motion: no-preference) {
  .video-card {
    transition: var(--transition);
  }
  
  .thumbnail-image {
    transition: transform 0.3s ease;
  }
  
  .play-overlay {
    transition: all 0.3s ease;
  }
}

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