/* ProfessorShaun — mobile-first stylesheet.
   Palette: deep midnight (#0a0f1e) over amber flag-channel accents.
   Accessibility: focus-visible rings, reduced-motion, AA contrast. */

:root {
  --bg: #0a0f1e;
  --bg-soft: #101a30;
  --card: #131d33;
  --card-2: #18274438;
  --ink: #e8edf7;
  --ink-dim: #aab6cc;
  --amber: #ffb94f;
  --amber-ink: #24160a;
  --teal: #6fd8e6;
  --line: #24314f;
  --shadow: 0 10px 30px rgba(3, 8, 22, .55);
  --radius: 14px;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f4ee;
    --bg-soft: #efece2;
    --card: #ffffff;
    --card-2: #f2efe6;
    --ink: #1b2333;
    --ink-dim: #516079;
    --amber: #b96a06;
    --amber-ink: #fff8ec;
    --teal: #0d7d8c;
    --line: #e4ddcc;
    --shadow: 0 10px 26px rgba(64, 51, 19, .16);
    color-scheme: light;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background:
    radial-gradient(1200px 500px at 80% -10%, #1c2c5599 0%, transparent 60%),
    radial-gradient(900px 400px at -10% 10%, #14343f66 0%, transparent 55%),
    var(--bg);
  color: var(--ink);
  -webkit-text-size-adjust: 100%;
}

.wrap { width: min(1120px, 92vw); margin-inline: auto; }
code { font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: .95em; color: var(--teal); }
q::before, q::after { content: '"'; }
q::before { content: '\201C'; color: var(--amber); }
q::after { content: '\201D'; color: var(--amber); }

.skip-link {
  position: absolute; left: -9999px; top: 0; background: var(--amber);
  color: var(--amber-ink); padding: .5rem 1rem; border-radius: 0 0 var(--radius) 0;
  z-index: 50;
}
.skip-link:focus { left: 0; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(10, 15, 30, .84);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
@media (prefers-color-scheme: light) {
  .site-header { background: rgba(246, 244, 238, .9); }
}
.header-row {
  display: flex; align-items: center; gap: 1rem; padding: .6rem 0;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: .6rem; text-decoration: none; color: var(--ink); }
.brand-mark {
  display: inline-grid; place-items: center; width: 34px; height: 34px;
  border-radius: 9px; font-weight: 700; font-size: .85rem; letter-spacing: .5px;
  background: linear-gradient(135deg, var(--amber), #ce8420);
  color: var(--amber-ink);
  box-shadow: 0 2px 8px rgba(0, 0, 0, .35);
}
.brand-name { font-weight: 700; letter-spacing: .2px; }
.site-nav { display: flex; gap: .9rem; flex: 1; flex-wrap: wrap; }
.site-nav a {
  color: var(--ink-dim); text-decoration: none; font-size: .95rem;
  padding: .25rem .35rem; border-radius: 6px;
}
.site-nav a:hover, .site-nav a:focus-visible { color: var(--ink); background: var(--card-2); }

.btn {
  display: inline-block; padding: .55rem .95rem; border-radius: 999px;
  text-decoration: none; font-weight: 600; font-size: .92rem;
  border: 1px solid transparent; transition: transform .12s ease, filter .12s ease;
}
.btn:hover { transform: translateY(-1px); filter: brightness(1.08); }
.btn:active { transform: translateY(0); }
.btn-yt { background: var(--amber); color: var(--amber-ink); }
.btn-ghost { border-color: var(--line); color: var(--ink); }
a:focus-visible { outline: 2px solid var(--teal); outline-offset: 2px; }

/* ---------- hero ---------- */
.hero { padding: clamp(2.2rem, 6vw, 4.2rem) 0 clamp(1.6rem, 4vw, 2.6rem); }
.hero-grid { display: grid; gap: 1.6rem; grid-template-columns: 1fr; }
@media (min-width: 800px) { .hero-grid { grid-template-columns: 1.6fr 1fr; } }
.hero-eyebrow {
  color: var(--teal); font-weight: 700; letter-spacing: 2px;
  text-transform: uppercase; font-size: .75rem; margin: 0 0 .4rem;
}
.hero h1 { margin: 0 0 .6rem; font-size: clamp(2rem, 6vw, 3.2rem); line-height: 1.1; letter-spacing: -.5px; }
.hero-crown { filter: drop-shadow(0 2px 6px rgba(255, 185, 79, .45)); }
.hero-tag { font-size: clamp(1.05rem, 2.4vw, 1.25rem); color: var(--ink); margin: 0 0 .4rem; }
.hero-sub { color: var(--ink-dim); max-width: 58ch; margin: 0; }
.hero-actions { display: flex; gap: .8rem; flex-wrap: wrap; margin-top: 1.1rem; }
.hero-live {
  align-self: center; background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1rem 1.1rem; box-shadow: var(--shadow);
}
.hero-channel-fact { margin: 0 0 .5rem; color: var(--ink-dim); }
.hero-channel-fact strong { color: var(--ink); }
.hero-updated { margin: 0; font-size: .85rem; color: var(--ink-dim); }

/* ---------- sections ---------- */
.section { padding: clamp(1.6rem, 4vw, 2.8rem) 0; }
.section-head {
  display: flex; align-items: baseline; justify-content: space-between; gap: 1rem;
  margin-bottom: 1rem; flex-wrap: wrap;
}
.section-head h2 { margin: 0; font-size: clamp(1.3rem, 3.4vw, 1.8rem); letter-spacing: -.3px; }
.see-all { color: var(--teal); text-decoration: none; font-size: .92rem; font-weight: 600; }
.see-all:hover { text-decoration: underline; }

.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.grid .status { grid-column: 1 / -1; }

/* video card */
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden; text-decoration: none;
  color: inherit; box-shadow: var(--shadow);
  display: flex; flex-direction: column;
  transition: transform .14s ease, border-color .14s ease;
}
.card:hover, .card:focus-visible { transform: translateY(-3px); border-color: #3a4f7d; }
.thumb-wrap { position: relative; aspect-ratio: 16 / 9; background: var(--bg-soft); }
.thumb-wrap img { width: 100%; height: 100%; object-fit: cover; display: block; }
.thumb-skeleton {
  position: absolute; inset: 0;
  background: linear-gradient(110deg, transparent 30%, rgba(255,255,255,.07) 50%, transparent 70%);
  background-size: 200% 100%; animation: shimmer 1.4s linear infinite;
}
@keyframes shimmer { to { background-position: -200% 0; } }
.card-meta { padding: .8rem .95rem 1rem; display: flex; flex-direction: column; gap: .25rem; flex: 1; }
.card-title {
  margin: 0; font-weight: 650; font-size: .98rem; line-height: 1.35;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-sub { color: var(--ink-dim); font-size: .8rem; margin-top: auto; }

/* shorts rail */
.shorts-rail {
  display: grid; grid-auto-flow: column; grid-auto-columns: minmax(170px, 1fr);
  gap: .9rem; overflow-x: auto; padding-bottom: .7rem;
  scroll-snap-type: x proximity;
}
.shorts-rail[data-empty="false"] + .shorts-hint { display: none; }
.shorts-rail .card { scroll-snap-align: start; }
.shorts-rail .thumb-wrap { aspect-ratio: 9 / 16; }
.shorts-rail .status { grid-column: 1 / -1; }
@media (min-width: 700px) { .shorts-rail { grid-auto-columns: 200px; } }

/* ---------- about ---------- */
.about-grid { display: grid; gap: 1.6rem; grid-template-columns: 1fr; }
@media (min-width: 900px) { .about-grid { grid-template-columns: 2fr 1fr; } }
.about-grid p { color: var(--ink-dim); }
.about-grid .about-note { color: var(--ink); font-size: .92rem; }
.about-links {
  align-self: start; display: flex; flex-direction: column; gap: .55rem;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1rem; box-shadow: var(--shadow);
}
.about-links a { color: var(--teal); text-decoration: none; font-weight: 600; }
.about-links a:hover { text-decoration: underline; }

/* ---------- status + footer ---------- */
.status { color: var(--ink-dim); font-size: .95rem; padding: .8rem 0; }
.footer-row {
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  padding: 1.4rem 0 2rem; color: var(--ink-dim); font-size: .85rem;
  border-top: 1px solid var(--line);
}
.footer-note { color: var(--ink-dim); }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}