/* ═══════════════════════════════════════════════════════
   YOUTUBE TIME — Video/content blocks gallery
   Astro Bot style, space theme, production-ready
   ═══════════════════════════════════════════════════════ */

/* ── Page ───────────────────────────────────────── */
.yt-page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px 16px calc(var(--bnav-h, 0px) + 40px);
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-height: 100dvh;
}

/* ── Header ─────────────────────────────────────── */
.yt-header {
  display: flex;
  align-items: center;
  gap: 16px;
}

.yt-back {
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  border-radius: 12px;
  background: var(--glass);
  border: 1px solid var(--border);
  color: var(--text2);
  font-family: 'Nunito', system-ui, sans-serif;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.2s;
  flex-shrink: 0;
}
.yt-back:hover {
  background: var(--glass2);
  color: var(--text);
  border-color: var(--border2);
}

.yt-header-center {
  flex: 1;
}

.yt-title {
  font-family: 'Luckiest Guy', cursive;
  font-size: 28px;
  color: var(--text);
  text-shadow: 0 0 20px rgba(255,71,87,0.3);
  line-height: 1.2;
}

.yt-subtitle {
  font-size: 13px;
  color: var(--text3);
  font-weight: 600;
  margin-top: 2px;
}

.yt-header-spacer {
  width: 90px;
  flex-shrink: 0;
}

/* ── Tabs ───────────────────────────────────────── */
.yt-tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}
.yt-tabs::-webkit-scrollbar { display: none; }

.yt-tab {
  padding: 8px 18px;
  border-radius: 99px;
  border: 1px solid var(--border);
  background: var(--glass);
  color: var(--text2);
  font-family: 'Nunito', system-ui, sans-serif;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s;
}
.yt-tab:hover {
  border-color: var(--border2);
  color: var(--text);
}
.yt-tab.active {
  background: linear-gradient(135deg, rgba(255,71,87,0.2), rgba(255,107,107,0.1));
  border-color: rgba(255,71,87,0.4);
  color: #ff6b6b;
}

/* ── Grid ───────────────────────────────────────── */
.yt-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 14px;
}

/* ── Card ───────────────────────────────────────── */
.yt-card {
  position: relative;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.3s ease;
  cursor: pointer;
  display: flex;
  flex-direction: column;
}

.yt-card:hover {
  transform: translateY(-4px);
  border-color: var(--border2);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}

/* Thumbnail area */
.yt-thumb {
  position: relative;
  aspect-ratio: 16 / 10;
  background: linear-gradient(135deg,
    var(--card-gradient-from, rgba(255,255,255,0.04)),
    var(--card-gradient-to, rgba(255,255,255,0.01)));
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.yt-thumb-icon {
  font-size: 48px;
  opacity: 0.5;
  transition: all 0.3s;
  filter: grayscale(0.3);
}
.yt-card:hover .yt-thumb-icon {
  opacity: 0.8;
  transform: scale(1.1);
  filter: grayscale(0);
}

/* Play button overlay */
.yt-play-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s;
  background: rgba(0,0,0,0.3);
}
.yt-card:hover .yt-play-overlay {
  opacity: 1;
}

.yt-play-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(255,71,87,0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: #fff;
  box-shadow: 0 4px 20px rgba(255,71,87,0.4);
  transition: transform 0.2s;
}
.yt-card:hover .yt-play-btn {
  transform: scale(1.1);
}

/* Duration badge */
.yt-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  padding: 3px 8px;
  border-radius: 6px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.3px;
}

/* Category badge */
.yt-cat-badge {
  position: absolute;
  top: 8px;
  left: 8px;
  padding: 3px 10px;
  border-radius: 6px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: #fff;
}
.yt-cat-badge.animals  { background: rgba(46,213,115,0.8); }
.yt-cat-badge.space    { background: rgba(108,92,231,0.8); }
.yt-cat-badge.science  { background: rgba(79,172,254,0.8); }
.yt-cat-badge.nature   { background: rgba(0,184,148,0.8); }
.yt-cat-badge.howto    { background: rgba(253,203,110,0.8); color: #333; }

/* Card body */
.yt-card-body {
  padding: 12px 14px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.yt-card-title {
  font-size: 14px;
  font-weight: 800;
  color: var(--text);
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.yt-card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  color: var(--text3);
  font-weight: 600;
}

.yt-card-desc {
  font-size: 11px;
  color: var(--text3);
  line-height: 1.4;
  margin-top: 2px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Coming soon state */
.yt-card.coming-soon {
  opacity: 0.6;
  cursor: default;
}
.yt-card.coming-soon:hover {
  transform: none;
  border-color: var(--border);
  box-shadow: none;
}
.yt-card.coming-soon .yt-play-overlay {
  display: none;
}

.yt-card.coming-soon .yt-thumb {
  border: 2px dashed var(--border);
  border-radius: 14px 14px 0 0;
  margin: 6px 6px 0;
}

.yt-coming-badge {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: 6px 14px;
  border-radius: 8px;
  background: rgba(0,0,0,0.6);
  color: #ffd32a;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
  white-space: nowrap;
}

/* Card gradients per category */
.yt-card.cat-animals  { --card-gradient-from: rgba(46,213,115,0.06);  --card-gradient-to: rgba(46,213,115,0.02); }
.yt-card.cat-space    { --card-gradient-from: rgba(108,92,231,0.06);  --card-gradient-to: rgba(108,92,231,0.02); }
.yt-card.cat-science  { --card-gradient-from: rgba(79,172,254,0.06);  --card-gradient-to: rgba(79,172,254,0.02); }
.yt-card.cat-nature   { --card-gradient-from: rgba(0,184,148,0.06);   --card-gradient-to: rgba(0,184,148,0.02); }
.yt-card.cat-howto    { --card-gradient-from: rgba(253,203,110,0.06);  --card-gradient-to: rgba(253,203,110,0.02); }

/* Hover glow per category */
.yt-card.cat-animals:hover  { border-color: rgba(46,213,115,0.3);  box-shadow: 0 8px 30px rgba(46,213,115,0.12); }
.yt-card.cat-space:hover    { border-color: rgba(108,92,231,0.3);  box-shadow: 0 8px 30px rgba(108,92,231,0.12); }
.yt-card.cat-science:hover  { border-color: rgba(79,172,254,0.3);  box-shadow: 0 8px 30px rgba(79,172,254,0.12); }
.yt-card.cat-nature:hover   { border-color: rgba(0,184,148,0.3);   box-shadow: 0 8px 30px rgba(0,184,148,0.12); }
.yt-card.cat-howto:hover    { border-color: rgba(253,203,110,0.3);  box-shadow: 0 8px 30px rgba(253,203,110,0.12); }

/* ── Empty state ────────────────────────────────── */
.yt-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: var(--text3);
}
.yt-empty-icon { font-size: 48px; opacity: 0.4; margin-bottom: 12px; }

/* ── Responsive ─────────────────────────────────── */
@media (max-width: 768px) {
  .yt-page { padding: 14px 10px 24px; gap: 14px; }
  .yt-title { font-size: 22px; }
  .yt-subtitle { font-size: 11px; }
  .yt-header-spacer { display: none; }
  .yt-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
  .yt-card { border-radius: 12px; }
  .yt-thumb-icon { font-size: 36px; }
  .yt-card-title { font-size: 12px; }
  .yt-play-btn { width: 40px; height: 40px; font-size: 18px; }
}

@media (max-width: 480px) {
  .yt-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .yt-tab { padding: 6px 14px; font-size: 11px; }
  .yt-card-body { padding: 8px 10px 10px; }
}