:root {
  --bg: #07090e;
  --bg-card: rgba(15, 20, 30, 0.75);
  --bg-card-hover: rgba(22, 30, 46, 0.9);
  --border: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(0, 229, 255, 0.4);
  --accent-cyan: #00e5ff;
  --accent-amber: #ffb300;
  --accent-red: #ff3366;
  --text-primary: #f0f4f8;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body.zf-theme {
  background-color: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Ambient glow */
.bg-glow {
  position: fixed;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 500px;
  background: radial-gradient(ellipse, rgba(0, 229, 255, 0.08) 0%, rgba(255, 51, 102, 0.03) 50%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* Header */
.zf-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(7, 9, 14, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 1.5rem;
}

.header-inner {
  max-width: 1360px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-logo {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.5px;
  color: #fff;
}

.brand-logo .accent {
  color: var(--accent-cyan);
}

.live-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--accent-cyan);
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid rgba(0, 229, 255, 0.25);
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  letter-spacing: 0.5px;
}

.pulse-dot {
  width: 6px;
  height: 6px;
  background: var(--accent-cyan);
  border-radius: 50%;
  animation: pulse 1.6s infinite ease-in-out;
}

@keyframes pulse {
  0% { transform: scale(0.9); opacity: 0.6; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.6; }
}

.nav-links {
  display: flex;
  gap: 0.4rem;
}

.nav-btn {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid transparent;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.nav-btn:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
}

.nav-btn.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--border);
}

.host-badge {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  border-left: 1px solid var(--border);
  padding-left: 1rem;
}

/* Main Content */
.zf-main {
  max-width: 1360px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
  position: relative;
  z-index: 1;
}

/* Hero Spotlight */
.hero-spotlight {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(20px);
  margin-bottom: 3rem;
}

.spotlight-media {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: #000;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.6);
}

.hero-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.media-overlay-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.6) 0%, transparent 60%);
  pointer-events: none;
}

.broadcast-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: #fff;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-sm);
  letter-spacing: 0.5px;
}

/* Synchronized Stage Overlay */
.stage-overlay {
  position: absolute;
  inset: 0;
  background: #000;
  transition: opacity 0.4s ease;
  z-index: 5;
}

.stage-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.stage-overlay img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.stage-caption {
  position: absolute;
  bottom: 1rem;
  left: 1rem;
  right: 1rem;
  background: rgba(0, 0, 0, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  color: #fff;
  font-size: 0.85rem;
  backdrop-filter: blur(8px);
}

/* Spotlight Content */
.spotlight-content {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.episode-meta {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.85rem;
  flex-wrap: wrap;
}

.badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  letter-spacing: 0.5px;
}

.category-badge {
  background: rgba(0, 229, 255, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 229, 255, 0.3);
}

.duration-badge {
  background: rgba(255, 179, 0, 0.15);
  color: var(--accent-amber);
  border: 1px solid rgba(255, 179, 0, 0.3);
}

.time-badge {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-secondary);
}

.episode-title {
  font-size: 1.7rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.25;
  margin-bottom: 0.75rem;
  color: #fff;
}

.episode-subject {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 1.25rem;
}

/* Subtitle Box */
.subtitles-box {
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  margin-bottom: 1.25rem;
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
}

.cue-speaker {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.8rem;
  color: var(--accent-cyan);
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.cue-text {
  font-size: 0.9rem;
  color: #e2e8f0;
  font-style: italic;
  line-height: 1.45;
}

/* Player Console */
.player-console {
  background: rgba(10, 14, 22, 0.85);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.playback-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.btn-play {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent-cyan);
  border: none;
  color: #000;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.35);
}

.btn-play:hover {
  transform: scale(1.06);
  background: #fff;
  box-shadow: 0 0 25px rgba(0, 229, 255, 0.6);
}

.time-readout {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  gap: 0.3rem;
}

.time-readout .separator {
  color: var(--text-muted);
}

.seek-container {
  position: relative;
  display: flex;
  align-items: center;
}

.seek-bar {
  width: 100%;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  outline: none;
  cursor: pointer;
}

.seek-bar::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent-cyan);
  cursor: pointer;
  box-shadow: 0 0 8px rgba(0, 229, 255, 0.8);
  transition: transform 0.15s ease;
}

.seek-bar::-webkit-slider-thumb:hover {
  transform: scale(1.3);
}

.extra-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.speed-selector {
  display: flex;
  gap: 0.3rem;
}

.speed-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.25rem 0.55rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.speed-btn:hover {
  color: #fff;
}

.speed-btn.active {
  color: var(--accent-cyan);
  background: rgba(0, 229, 255, 0.1);
  border-color: rgba(0, 229, 255, 0.3);
}

.btn-share {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
}

.btn-share:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.3);
}

/* Feed Section */
.feed-section {
  margin-top: 2rem;
}

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.75rem;
}

.section-title {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.3px;
  color: #fff;
}

.section-count {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.episodes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(360px, 100%), 1fr));
  gap: 1.5rem;
}

/* Episode Card */
.episode-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  cursor: pointer;
}

.episode-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

.card-media {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #000;
  overflow: hidden;
}

.card-media video,
.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.episode-card:hover .card-media video,
.episode-card:hover .card-media img {
  transform: scale(1.03);
}

.card-time-badge {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  color: #fff;
  background: rgba(0, 0, 0, 0.75);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  backdrop-filter: blur(4px);
}

.card-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-tags {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 0.65rem;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.35;
  color: #fff;
  margin-bottom: 0.5rem;
}

.card-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.45;
  margin-bottom: 1rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 0.85rem;
}

.card-duration {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-amber);
}

.btn-card-play {
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid rgba(0, 229, 255, 0.3);
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.episode-card:hover .btn-card-play {
  background: var(--accent-cyan);
  color: #000;
}

/* Footer */
.zf-footer {
  border-top: 1px solid var(--border);
  padding: 3rem 1.5rem;
  background: rgba(5, 7, 10, 0.95);
}

.footer-inner {
  max-width: 1360px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer-brand .logo {
  font-family: var(--font-mono);
  font-weight: 800;
  color: #fff;
  font-size: 1.1rem;
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.4rem;
}

.footer-note {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Responsive adjustments */
@media (max-width: 1024px) {
  .hero-spotlight {
    grid-template-columns: 1fr;
  }
  .nav-links {
    display: none;
  }
}