@import url('https://fonts.googleapis.com/css2?family=Big+Shoulders+Display:wght@600;700;800&family=IBM+Plex+Mono:wght@400;500;600;700&display=swap');

:root {
  --bg: #0f1b2a;
  --bg-vignette: #0a141f;
  --panel: #16212e;
  --panel-raised: #1f2d3d;
  --border: #32455a;
  --border-lit: #4a6684;

  --text: #ffffff;
  --text-dim: #d5dbdb;
  --text-faint: #7d8998;

  --amber: #ff9900;
  --amber-dim: #8a5c00;
  --red: #d13212;

  --font-display: 'Big Shoulders Display', 'Arial Narrow', sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, 'Courier New', monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 50;
  opacity: 0.02;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

/* ---------- cabecera ---------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.7rem clamp(0.8rem, 3vw, 1.6rem);
  background: var(--bg-vignette);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.wordmark {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.7rem;
  letter-spacing: 0.06em;
  line-height: 1;
  color: var(--text);
  white-space: nowrap;
}

.wordmark span { color: var(--amber); }

.search {
  display: flex;
  flex: 1 1 16rem;
  max-width: 34rem;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--panel);
  overflow: hidden;
}

.search:focus-within { border-color: var(--border-lit); }

.search input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 0.5rem 0.7rem;
}

.search input::placeholder { color: var(--text-faint); }
.search input:focus-visible { outline: none; }

.search button {
  border: 0;
  border-left: 1px solid var(--border);
  background: var(--panel-raised);
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 0 0.9rem;
  cursor: pointer;
}

.search button:hover { background: var(--amber-dim); color: var(--text); }

.entrar {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.4rem 0.8rem;
  white-space: nowrap;
}

.entrar:hover { color: var(--amber); border-color: var(--amber); }

/* ---------- estructura ---------- */

main {
  max-width: 82rem;
  margin: 0 auto;
  padding: clamp(1rem, 3vw, 1.8rem);
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

h1.page-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 4vw, 2.1rem);
  letter-spacing: 0.02em;
  margin: 0;
  line-height: 1.1;
}

.kicker {
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.empty {
  border: 1px dashed var(--border);
  border-radius: 3px;
  padding: 2.2rem 1rem;
  text-align: center;
  color: var(--text-faint);
  font-size: 0.85rem;
}

/* ---------- grilla ---------- */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
  gap: 1.2rem 1rem;
}

.card { display: flex; flex-direction: column; gap: 0.55rem; }

.card-thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--bg-vignette);
  border: 1px solid var(--border);
  border-radius: 3px;
  overflow: hidden;
}

.card:hover .card-thumb { border-color: var(--amber); }

.card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.card-thumb .no-thumb {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-faint);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
}

/* La vista previa se monta encima de la miniatura y ocupa la misma caja, asi
   la tarjeta no cambia de tamaño al arrancar. */
.card-thumb .preview {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: var(--bg-vignette);
}

.card-thumb.previendo { border-color: var(--amber); }

.badge {
  position: absolute;
  right: 0.35rem;
  bottom: 0.35rem;
  background: rgba(10, 20, 31, 0.9);
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.68rem;
  font-variant-numeric: tabular-nums;
  padding: 0.05rem 0.3rem;
  border-radius: 2px;
}

.card-title {
  font-size: 0.85rem;
  font-weight: 500;
  line-height: 1.35;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card:hover .card-title { color: var(--amber); }

.card-meta { font-size: 0.72rem; color: var(--text-faint); }
.card-meta a:hover { color: var(--amber); }

.more-wrap { display: flex; justify-content: center; margin-top: 1.6rem; }

.btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--amber);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.5rem 1.2rem;
  cursor: pointer;
}

.btn:hover { background: var(--panel-raised); border-color: var(--amber); }
.btn[disabled] { opacity: 0.5; cursor: default; }

/* ---------- pagina de video ---------- */

.player-frame {
  position: relative;
  width: 100%;
  background: #000;
  border: 1px solid var(--border);
  border-radius: 3px;
  overflow: hidden;
  line-height: 0;
}

.player-frame video { display: block; width: 100%; max-height: 78vh; }
.player-frame canvas { position: absolute; top: 0; left: 0; pointer-events: none; }

.video-head { margin-top: 1.1rem; display: flex; flex-direction: column; gap: 0.6rem; }

h1.video-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.3rem, 3.4vw, 1.9rem);
  line-height: 1.15;
  letter-spacing: 0.01em;
  margin: 0;
}

.video-sub {
  display: flex;
  gap: 0.5rem 1.1rem;
  flex-wrap: wrap;
  align-items: center;
  font-size: 0.78rem;
  color: var(--text-faint);
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--border);
}

.channel-chip {
  color: var(--amber);
  font-weight: 600;
  letter-spacing: 0.03em;
}

.channel-chip:hover { text-decoration: underline; }

.video-desc {
  white-space: pre-wrap;
  color: var(--text-dim);
  font-size: 0.85rem;
  max-width: 62rem;
}

.marks-note {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--amber);
  border: 1px solid var(--amber-dim);
  border-radius: 2px;
  padding: 0.15rem 0.45rem;
}

.back-link {
  display: inline-block;
  margin-bottom: 1rem;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.back-link:hover { color: var(--amber); }

@media (max-width: 30rem) {
  .grid { grid-template-columns: 1fr 1fr; gap: 0.9rem 0.7rem; }
  .card-title { font-size: 0.78rem; }
}