:root {
  --bg: #0a0a0f;
  --bg-card: #12121a;
  --bg-hover: #1a1a25;
  --accent: #8b5cf6;
  --accent-glow: rgba(139, 92, 246, 0.3);
  --green: #22c55e;
  --red: #ef4444;
  --text: #e4e4e7;
  --text-dim: #71717a;
  --border: #27272a;
  --radius: 12px;
}

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

body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 30px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  font-size: 2rem;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

.logo-text {
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), #c084fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-sub {
  font-size: 0.9rem;
  color: var(--text-dim);
  font-family: 'JetBrains Mono', monospace;
}

.status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  color: var(--green);
}

.status-dot {
  width: 8px;
  height: 8px;
  background: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--green);
  animation: blink 2s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* Grid Layout */
.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  flex: 1;
}

@media (max-width: 900px) {
  .grid { grid-template-columns: 1fr; }
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.3s ease;
}

.card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 30px var(--accent-glow);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  background: rgba(139, 92, 246, 0.05);
}

.card-header h2 {
  font-size: 1.1rem;
  font-weight: 600;
}

.card-content {
  padding: 20px;
  max-height: 400px;
  overflow-y: auto;
}

.placeholder {
  color: var(--text-dim);
  text-align: center;
  padding: 40px;
  font-style: italic;
}

/* Buttons */
.btn-refresh {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  width: 36px;
  height: 36px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-refresh:hover {
  background: var(--accent);
  border-color: var(--accent);
  transform: rotate(180deg);
}

.btn-refresh.loading .refresh-icon {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Video Items */
.video-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  margin-bottom: 8px;
  border: 1px solid transparent;
}

.video-item:hover {
  background: var(--bg-hover);
  border-color: var(--accent);
}

.video-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.video-info {
  flex: 1;
  min-width: 0;
}

.video-title {
  font-weight: 600;
  margin-bottom: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.video-channel {
  font-size: 0.85rem;
  color: var(--text-dim);
}

.video-reason {
  font-size: 0.8rem;
  color: var(--accent);
  margin-top: 4px;
  font-style: italic;
}

/* Preferences */
.prefs-card .card-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.pref-section h3 {
  font-size: 0.9rem;
  margin-bottom: 10px;
  color: var(--text-dim);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.tag {
  background: var(--bg-hover);
  border: 1px solid var(--border);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-family: 'JetBrains Mono', monospace;
  transition: all 0.2s;
}

.tag:hover {
  border-color: var(--accent);
}

.tag.liked { border-color: var(--green); color: var(--green); }
.tag.disliked { border-color: var(--red); color: var(--red); }

.add-tag {
  display: flex;
  gap: 8px;
}

.add-tag input {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 12px;
  border-radius: 8px;
  font-family: inherit;
}

.add-tag input:focus {
  outline: none;
  border-color: var(--accent);
}

.add-tag button {
  background: var(--accent);
  border: none;
  color: white;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1.2rem;
  transition: all 0.2s;
}

.add-tag button:hover {
  transform: scale(1.1);
}

/* Player */
.player-card {
  grid-column: span 2;
}

@media (max-width: 900px) {
  .player-card { grid-column: span 1; }
}

#player-container {
  aspect-ratio: 16/9;
  background: var(--bg);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

#player-container iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* Footer */
.footer {
  margin-top: 30px;
  padding: 20px 0;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-dim);
  font-family: 'JetBrains Mono', monospace;
}

.footer .sep {
  margin: 0 12px;
  opacity: 0.3;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

/* Loading Animation */
.loading-shimmer {
  background: linear-gradient(
    90deg,
    var(--bg-card) 0%,
    var(--bg-hover) 50%,
    var(--bg-card) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

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