/* ==============================
   PseudoYouTube — Design System
   ============================== */

:root {
  --bg: #0f1115;
  --panel: #151922;
  --panel-2: #1c2230;
  --text: #e9eef6;
  --muted: #a9b4c7;
  --brand: #74d0a7;
  --brand-2: #47b38a;
  --danger: #ff6b6b;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --shadow-sm: 0 6px 20px rgba(0,0,0,.25);
  --maxw: 1200px;
  --space-1: .375rem;
  --space-2: .75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f7f9;
    --panel: #ffffff;
    --panel-2: #f0f3f7;
    --text: #1a2433;
    --muted: #5c6b82;
    --brand: #2e7d5b;
    --brand-2: #215d44;
    --shadow: 0 10px 30px rgba(22,38,58,.12);
    --shadow-sm: 0 6px 16px rgba(22,38,58,.08);
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background: radial-gradient(1200px 800px at 10% -10%, rgba(116,208,167,.15), transparent 60%),
              radial-gradient(900px 700px at 110% 10%, rgba(71,179,138,.12), transparent 60%), var(--bg);
  color: var(--text);
  line-height: 1.55;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; border-radius: var(--radius-sm); }
button, .button { cursor: pointer; border: 0; }

.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--space-4); }

/* Header */
.header {
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: saturate(1.2) blur(8px);
  background: color-mix(in oklab, var(--bg) 82%, transparent);
  border-bottom: 1px solid color-mix(in oklab, var(--muted) 15%, transparent);
}
.header-inner { display:flex; align-items:center; justify-content:space-between; padding: .85rem 0; }
.brand { display:flex; align-items:center; gap:.6rem; font-weight:700; letter-spacing:.2px; }
.brand .mark { width:32px; height:32px; border-radius:9px; background:
  conic-gradient(from 210deg, var(--brand), var(--brand-2));
  box-shadow: inset 0 0 0 2px rgba(255,255,255,.08);
}
.nav { display:flex; align-items:center; gap: .9rem; flex-wrap: wrap; }
.nav a { padding: .4rem .7rem; border-radius: 8px; color: var(--muted); }
.nav a:is(:hover,:focus) { background: color-mix(in oklab, var(--panel) 60%, transparent); color: var(--text); }
.search {
  display:flex; align-items:center; gap:.5rem; background: var(--panel-2);
  padding: .5rem .7rem; border-radius: 10px; border:1px solid color-mix(in oklab, var(--muted) 14%, transparent);
}
.search input {
  background: transparent; border:0; outline:0; color: var(--text); width: 180px;
}
@media (max-width: 720px) { .search input { width: 120px; } }

/* Hero */
.hero {
  padding: var(--space-6) 0 var(--space-5);
}
.hero-card {
  background: linear-gradient(160deg, color-mix(in oklab, var(--panel) 90%, transparent) 0%,
                                      color-mix(in oklab, var(--panel-2) 86%, transparent) 100%);
  border: 1px solid color-mix(in oklab, var(--muted) 12%, transparent);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: clamp(1.25rem, 1rem + 2vw, 2.25rem);
  display:grid; grid-template-columns: 1.25fr .9fr; gap: var(--space-5);
}
.hero h1 { margin:0 0 .2rem 0; font-size: clamp(1.6rem, 1.2rem + 1.8vw, 2.4rem); }
.hero p { color: var(--muted); margin: .2rem 0 1.2rem; }
.cta-row { display:flex; gap:.8rem; flex-wrap:wrap; }
.button {
  background: linear-gradient(180deg, var(--brand), var(--brand-2));
  color: white; padding: .65rem .95rem; border-radius: 10px; font-weight: 600;
  box-shadow: 0 6px 18px color-mix(in oklab, var(--brand) 25%, transparent);
  transition: transform .06s ease;
}
.button.secondary {
  background: transparent; color: var(--text);
  border: 1px solid color-mix(in oklab, var(--muted) 18%, transparent);
}
.button:active { transform: translateY(1px); }
.hero-visual {
  aspect-ratio: 16 / 9; border-radius: var(--radius);
  background:
   linear-gradient(180deg, rgba(255,255,255,.06), transparent),
   url('thumb-hero.jpg') center/cover no-repeat, var(--panel-2);
  box-shadow: var(--shadow-sm);
}

/* Section headers */
.section { padding: var(--space-5) 0; }
.section h2 { margin: 0 0 .8rem; letter-spacing:.2px; }

/* Video grid */
.grid {
  display:grid; gap: 1.2rem;
  grid-template-columns: repeat(12, 1fr);
}
.card {
  grid-column: span 3; /* 4 per row desktop */
  background: var(--panel);
  border: 1px solid color-mix(in oklab, var(--muted) 12%, transparent);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: clip; display:flex; flex-direction: column;
}
.card .thumb { aspect-ratio: 16/9; background: var(--panel-2); }
.card .body { padding: .9rem .95rem 1.1rem; display:flex; flex-direction:column; gap:.5rem; }
.card h3 { margin: 0; font-size: 1rem; line-height: 1.35; }
.meta { color: var(--muted); font-size: .9rem; }
.pill {
  display:inline-flex; align-items:center; gap:.35rem;
  font-size: .78rem; color: var(--text);
  background: color-mix(in oklab, var(--brand) 22%, transparent);
  padding: .28rem .5rem; border-radius: 999px;
}

.card .actions { margin-top: .4rem; display:flex; gap:.5rem; }
.card .actions .ghost {
  background: transparent; color: var(--text);
  border: 1px solid color-mix(in oklab, var(--muted) 16%, transparent);
  padding: .45rem .65rem; border-radius: 9px;
}

@media (max-width: 1200px) { .card { grid-column: span 4; } } /* 3 per row */
@media (max-width: 840px)  { .card { grid-column: span 6; } } /* 2 per row */
@media (max-width: 540px)  { .card { grid-column: span 12; } } /* full width */

/* Category row */
.category-row {
  display: grid; gap: 1rem;
  grid-template-columns: repeat(5, minmax(140px, 1fr));
}
.category {
  background: linear-gradient(180deg, color-mix(in oklab, var(--panel) 88%, transparent), var(--panel-2));
  border: 1px solid color-mix(in oklab, var(--muted) 12%, transparent);
  border-radius: var(--radius-sm); padding: .9rem 1rem;
  display:flex; align-items:center; justify-content:space-between; gap:.6rem;
  transition: transform .08s ease, border-color .2s ease;
}
.category:hover { transform: translateY(-2px); border-color: color-mix(in oklab, var(--brand) 18%, transparent); }

/* Footer */
.footer { padding: var(--space-6) 0 var(--space-5); color: var(--muted); }
.footer .links { display:flex; gap: 1rem; flex-wrap: wrap; }

/* ===== Video Page ===== */
.player-wrap {
  display:grid; gap: var(--space-4);
  grid-template-columns: 2fr 1fr;
  align-items: start;
}
.player-card, .side-card {
  background: var(--panel);
  border: 1px solid color-mix(in oklab, var(--muted) 12%, transparent);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: clip;
}
.player {
  aspect-ratio: 16/9;
  width: 100%;
  background: #000;
  border-bottom: 1px solid color-mix(in oklab, var(--muted) 10%, transparent);
}
.player iframe, .player video { width: 100%; height: 100%; display:block; }
.player-body { padding: 1rem 1.25rem 1.2rem; }
.player-title { margin:0 0 .35rem; font-size: clamp(1.2rem, .8rem + 1.2vw, 1.8rem); }
.badge-row { display:flex; gap:.5rem; flex-wrap:wrap; margin:.5rem 0 0; }
.kicker { color: var(--muted); font-size: .95rem; }

.side-card { padding: 1rem; }
.side-card h3 { margin-top: 0; }
.related-list { list-style:none; padding:0; margin:0; display:grid; gap:.6rem; }
.related-item { display:grid; grid-template-columns: 140px 1fr; gap:.7rem; align-items:center; }
.related-item .thumb { aspect-ratio: 16/9; background: var(--panel-2); }
.related-item a { display:inline-block; }
.related-item .meta { font-size: .85rem; }

.controls { display:flex; gap:.6rem; margin-top: .9rem; }
.control {
  background: transparent; color: var(--text);
  border: 1px solid color-mix(in oklab, var(--muted) 16%, transparent);
  padding: .5rem .7rem; border-radius: 9px; font-weight: 600;
}
.control.primary { border: 0; background: linear-gradient(180deg, var(--brand), var(--brand-2)); color: #fff; }

.desc-card {
  margin-top: var(--space-4);
  background: var(--panel);
  border: 1px solid color-mix(in oklab, var(--muted) 12%, transparent);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow-sm);
}

.tags { display:flex; gap:.5rem; flex-wrap: wrap; margin-top:.5rem; }
.tag { background: color-mix(in oklab, var(--brand) 20%, transparent); padding: .28rem .55rem; border-radius: 999px; font-size:.8rem; }

@media (max-width: 980px) {
  .hero-card { grid-template-columns: 1fr; }
  .player-wrap { grid-template-columns: 1fr; }
  .related-item { grid-template-columns: 120px 1fr; }
}