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

:root {
  --bg: #0a0a0a;
  --bg2: #141414;
  --bg3: #1a1a1a;
  --card: #1e1e1e;
  --accent: #1db954;
  --accent-hover: #1ed760;
  --text: #ffffff;
  --text2: #b3b3b3;
  --text3: #666;
  --danger: #e74c3c;
  --radius: 8px;
}

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

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

/* Header */
.header {
  background: var(--bg2);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid #222;
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

.nav { display: flex; gap: 12px; align-items: center; }
.nav a, .nav button {
  color: var(--text2);
  font-size: 14px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px 12px;
  border-radius: var(--radius);
  transition: all 0.2s;
}
.nav a:hover, .nav button:hover { color: var(--text); background: var(--bg3); }
.nav .btn-login {
  background: var(--accent);
  color: #000;
  font-weight: 600;
}
.nav .btn-login:hover { background: var(--accent-hover); }

/* Main content */
.main { max-width: 1200px; margin: 0 auto; padding: 20px; }

/* Topics bar */
.topics-bar {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 10px 0 20px;
  scrollbar-width: none;
}
.topics-bar::-webkit-scrollbar { display: none; }

.topic-chip {
  background: var(--bg3);
  color: var(--text2);
  padding: 8px 16px;
  border-radius: 20px;
  white-space: nowrap;
  cursor: pointer;
  font-size: 14px;
  border: none;
  transition: all 0.2s;
}
.topic-chip:hover, .topic-chip.active {
  background: var(--accent);
  color: #000;
}

/* Episodes grid */
.episodes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.episode-card {
  background: var(--card);
  background-size: cover;
  background-position: center;
  border-radius: var(--radius);
  padding: 0;
  cursor: default;
  transition: all 0.2s;
  border: 1px solid transparent;
  overflow: hidden;
  aspect-ratio: 16/9;
  position: relative;
}
.episode-card:hover {
  border-color: #333;
  transform: translateY(-2px);
}
.card-overlay {
  background: linear-gradient(to top, rgba(0,0,0,0.9) 30%, rgba(0,0,0,0.15) 100%);
  padding: 20px;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  box-sizing: border-box;
}

.episode-card .meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.episode-card .topic-tag {
  font-size: 11px;
  background: var(--accent);
  color: #000;
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: 600;
}

.episode-card .date {
  font-size: 12px;
  color: var(--text3);
}

.episode-card h3 {
  font-size: 16px;
  margin-bottom: 6px;
  line-height: 1.3;
}

.episode-card .desc {
  font-size: 13px;
  color: var(--text2);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 3 card buttons row */
.card-buttons {
  display: flex;
  gap: 10px;
  margin-top: 14px;
}

.card-btn {
  width: 48px;
  height: 48px;
  min-width: 48px;
  min-height: 48px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.2);
  color: #fff;
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}
.card-btn:hover {
  transform: scale(1.1);
}

/* Play/Listen button — green glass */
.card-btn-play {
  background: linear-gradient(135deg, #4ade80 0%, #22c55e 50%, #16a34a 100%);
  box-shadow: 0 0 15px rgba(74,222,128,0.4), inset 0 1px 1px rgba(255,255,255,0.4);
}
.card-btn-play:hover {
  box-shadow: 0 0 25px rgba(74,222,128,0.6), inset 0 1px 1px rgba(255,255,255,0.5);
}

/* PDF button — orange glass */
.card-btn-pdf {
  background: linear-gradient(135deg, #fb923c 0%, #f97316 50%, #ea580c 100%);
  box-shadow: 0 0 15px rgba(251,146,60,0.4), inset 0 1px 1px rgba(255,255,255,0.4);
}
.card-btn-pdf:hover {
  box-shadow: 0 0 25px rgba(251,146,60,0.6), inset 0 1px 1px rgba(255,255,255,0.5);
}

/* Video/YouTube button — red glass */
.card-btn-video {
  background: linear-gradient(135deg, #f87171 0%, #ef4444 50%, #dc2626 100%);
  box-shadow: 0 0 15px rgba(248,113,113,0.4), inset 0 1px 1px rgba(255,255,255,0.4);
}
.card-btn-video:hover {
  box-shadow: 0 0 25px rgba(248,113,113,0.6), inset 0 1px 1px rgba(255,255,255,0.5);
}

/* Player bar (bottom) */
.player-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg2);
  border-top: 1px solid #222;
  padding: 8px 20px;
  display: none;
  align-items: center;
  gap: 12px;
  z-index: 200;
}
.player-bar.active { display: flex; }

.player-info { flex: 1; min-width: 0; }
.player-info .title { font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.player-info .topic { font-size: 12px; color: var(--text2); }

.player-controls { display: flex; align-items: center; gap: 12px; }
.player-controls button {
  background: none;
  border: none;
  color: var(--text);
  font-size: 20px;
  cursor: pointer;
  padding: 6px;
}
.player-controls .play-main {
  width: 36px;
  height: 36px;
  background: var(--accent);
  border-radius: 50%;
  color: #000;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.progress-bar {
  flex: 2;
  display: flex;
  align-items: center;
  gap: 8px;
}
.progress-bar input[type="range"] {
  flex: 1;
  accent-color: var(--accent);
  height: 4px;
}
.progress-bar .time { font-size: 11px; color: var(--text3); min-width: 40px; }

.player-extras { display: flex; gap: 8px; }
.player-extras button {
  background: none;
  border: none;
  color: var(--text2);
  font-size: 14px;
  cursor: pointer;
  padding: 6px;
}
.player-extras button:hover { color: var(--text); }

/* Slides/Video viewer overlay */
.slides-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 60px;
  background: rgba(0,0,0,0.95);
  z-index: 150;
  align-items: center;
  justify-content: center;
}
.slides-overlay.active { display: flex; }
.slides-overlay iframe {
  width: 90%;
  height: 90%;
  border: none;
  border-radius: var(--radius);
}
.slides-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--bg3);
  border: none;
  color: var(--text);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 18px;
  cursor: pointer;
}

/* Upload area (admin) */
.upload-zone {
  border: 2px dashed #333;
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
  color: var(--text2);
  cursor: pointer;
  transition: all 0.3s;
  margin: 10px 0;
}
.upload-zone:hover, .upload-zone.dragover {
  border-color: var(--accent);
  background: rgba(29,185,84,0.05);
}
.upload-zone input { display: none; }

/* Forms */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; color: var(--text2); margin-bottom: 4px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 10px;
  background: var(--bg3);
  border: 1px solid #333;
  border-radius: var(--radius);
  color: var(--text);
  font-size: 14px;
}
.form-group textarea { min-height: 80px; resize: vertical; }

.btn {
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-primary { background: var(--accent); color: #000; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-secondary { background: var(--bg3); color: var(--text); }

/* Paywall modal */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.8);
  z-index: 300;
  align-items: center;
  justify-content: center;
}
.modal-overlay.active { display: flex; }
.modal {
  background: var(--card);
  border-radius: 12px;
  padding: 32px;
  max-width: 400px;
  text-align: center;
}
.modal h2 { margin-bottom: 12px; }
.modal p { color: var(--text2); margin-bottom: 20px; font-size: 14px; }

/* Empty state */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text3);
}
.empty-state h2 { color: var(--text2); margin-bottom: 8px; }

/* Responsive */
@media (max-width: 768px) {
  .header { padding: 10px 12px; }
  .logo { font-size: 15px; }
  .main { padding: 12px; }
  .episodes-grid { grid-template-columns: 1fr; }
  .player-bar { flex-wrap: wrap; padding: 8px 12px; }
  .progress-bar { order: -1; width: 100%; flex: none; }
  .player-extras { display: none; }
  .card-btn { width: 42px; height: 42px; min-width: 42px; min-height: 42px; font-size: 16px; }
}