:root {
  --bg-color: #f0f4f8;
  --text-color: #1f2937;
  --text-muted: #6b7280;
  --accent-1: #0088cc;
  --accent-2: #d90449;
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(0, 0, 0, 0.1);
  --focus-ring: rgba(0, 136, 204, 0.8);
}

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

body {
  font-family: 'Tahoma', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-container {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.header {
  padding: 1.5rem 3rem;
  border-bottom: 1px solid var(--glass-border);
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.gradient-text {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(to right, var(--accent-1), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  padding: 2rem;
  gap: 2rem;
}

.active-video-section {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.video-wrapper {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  /* 16:9 Aspect Ratio */
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(99, 102, 241, 0.1);
  border: 1px solid var(--glass-border);
  background-color: #000;
}

.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.video-info h2 {
  font-size: 1.875rem;
  font-weight: 600;
  letter-spacing: -0.025em;
  margin-bottom: 0.5rem;
}

.video-info p {
  color: var(--text-muted);
}

.filmstrip-section {
  width: 100%;
  padding-top: 2rem;
}

.filmstrip-header {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

.filmstrip-section h3 {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: 1rem;
}

.filmstrip-container {
  display: flex;
  overflow-x: auto;
  gap: 1rem;
  padding: 0 2rem 1.5rem 2rem;
  scroll-snap-type: x mandatory;
}

/* Custom Scrollbar */
.filmstrip-container::-webkit-scrollbar {
  height: 8px;
}

.filmstrip-container::-webkit-scrollbar-track {
  background: transparent;
}

.filmstrip-container::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 4px;
}

.filmstrip-container::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 0, 0, 0.3);
}

.video-card {
  flex: 0 0 auto;
  width: 320px;
  position: relative;
  border-radius: 0.75rem;
  overflow: hidden;
  scroll-snap-align: start;
  cursor: pointer;
  border: 1px solid var(--glass-border);
  transition: all 0.3s ease;
  background-color: #000;
  aspect-ratio: 16 / 9;
}

.video-card.active {
  box-shadow: 0 0 0 2px var(--accent-1);
  opacity: 1;
  transform: scale(1);
}

.video-card:not(.active) {
  opacity: 0.6;
}

.video-card:not(.active):hover {
  opacity: 1;
}

.video-card:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--focus-ring);
}

.thumbnail {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

/* Removed thumbnail scale on hover */

.overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0.2) 50%, transparent 100%);
}

.play-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 3rem;
  height: 3rem;
  fill: white;
  opacity: 0;
  transition: opacity 0.3s ease;
  filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.5));
}

.video-card:not(.active):hover .play-icon {
  opacity: 1;
}

.playing-badge {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  background-color: var(--accent-1);
  color: white;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.5rem;
  border-radius: 0.375rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(4px);
}

.card-title {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: white;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.8);
}

@media (max-width: 768px) {
  .header {
    padding: 1rem;
  }

  .main-content {
    padding: 1rem;
  }

  .filmstrip-header {
    padding: 0 1rem;
  }

  .filmstrip-container {
    padding: 0 1rem 1.5rem 1rem;
  }

  .video-info h2 {
    font-size: 1.5rem;
  }

  .video-card {
    width: 260px;
  }
}