/* =====================================================================
   Video Platform - base styles. Dark-first, mobile-first (spec 5,6,11).
   Split into base/layout/components/responsive during Phase 9 minify.
   ===================================================================== */

:root{
  --bg:#0b0b0f; --surface:#15151d; --surface-2:#1e1e29;
  --text:#eaeaf0; --muted:#9a9aab; --line:#26263340;
  --accent:#ff2d6e; --accent-2:#8ab4ff;
  --radius:12px; --wrap:1280px;
  --gap:14px;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--bg); color:var(--text);
  font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
}
img{max-width:100%; height:auto; display:block}
a{color:inherit; text-decoration:none}
a:hover{color:var(--accent-2)}

.wrap{max-width:var(--wrap); margin-inline:auto; padding-inline:16px}
.muted{color:var(--muted)}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip-link{position:absolute;left:-999px;top:0;background:var(--accent);color:#fff;padding:8px 12px;z-index:100}
.skip-link:focus{left:8px;top:8px}

/* ---- Header ---- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(11,11,15,.92);
  backdrop-filter:blur(6px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:12px;min-height:56px}
.logo{font-weight:800;font-size:1.15rem;letter-spacing:.3px}
.logo:hover{color:var(--accent)}
.main-nav{display:none;gap:16px;margin-left:8px}
.main-nav a[aria-current="page"]{color:var(--accent)}
.search-form{margin-left:auto;display:flex;gap:6px;flex:1;max-width:420px}
.search-form input{flex:1;min-width:0;padding:9px 12px;border-radius:999px;border:1px solid var(--line);
  background:var(--surface);color:var(--text)}
.search-form button{padding:9px 14px;border-radius:999px;border:0;background:var(--accent);color:#fff;font-weight:600;cursor:pointer}
.menu-toggle{background:var(--surface-2);color:var(--text);border:1px solid var(--line);
  border-radius:8px;padding:8px 10px;cursor:pointer}
.mobile-nav{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.mobile-nav a{padding:12px 16px;border-bottom:1px solid var(--line)}
.mobile-nav[hidden]{display:none}

/* ---- Sections ---- */
.hero{padding:26px 0 8px}
.hero h1{margin:0 0 6px;font-size:1.7rem}
.hero p{margin:0;color:var(--muted)}
.section{margin:26px 0}
.section-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:12px}
.section-head h2{margin:0;font-size:1.2rem}
.view-all{color:var(--accent-2);font-size:.9rem}
.breadcrumb{font-size:.85rem;color:var(--muted);margin:16px 0}
.breadcrumb a:hover{color:var(--accent-2)}

/* ---- Video grid + cards - YouTube-style (spec 10,11) ---- */
.video-grid{display:grid;gap:22px 16px;grid-template-columns:repeat(2,1fr)}
.card{background:transparent;border-radius:0;overflow:visible}
.card .thumb{position:relative;display:block;aspect-ratio:16/9;background:var(--surface-2);
  border-radius:12px;overflow:hidden}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease}
.card:hover .thumb img{transform:scale(1.03)}
.card .dur{position:absolute;right:8px;bottom:8px;background:#000c;color:#fff;
  font-size:.75rem;font-weight:600;padding:1px 6px;border-radius:6px;line-height:1.5}
.card .title{font-size:.95rem;font-weight:600;line-height:1.3;margin:10px 2px 4px;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card:hover .title{color:var(--text)}
.card .meta{font-size:.82rem;color:var(--muted);margin:0 2px}
[data-placeholder]{padding:20px;border:1px dashed var(--line);border-radius:var(--radius)}

.thumb-fallback{position:absolute;inset:0;background:linear-gradient(135deg,var(--surface-2),#111)}

/* ---- Chips (categories) ---- */
.chip-list{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:0}
.chip{display:inline-block;padding:7px 12px;background:var(--surface);border:1px solid var(--line);
  border-radius:999px;font-size:.85rem}
.chip:hover{border-color:var(--accent)}
.lead{color:var(--muted);max-width:70ch}

/* ---- Player + embed (spec 13,28) ---- */
.player{position:relative;aspect-ratio:16/9;background:#000;border-radius:var(--radius);
  overflow:hidden;margin:12px 0;display:grid;place-items:center}
.player-poster{width:100%;height:100%;object-fit:cover}
.player-frame{width:100%;height:100%;border:0;display:block}
.player-play{position:absolute;inset:0;margin:auto;width:72px;height:72px;border-radius:50%;
  border:0;background:rgba(255,45,110,.92);color:#fff;font-size:1.5rem;cursor:pointer;
  display:grid;place-items:center;box-shadow:0 6px 24px #000a}
.player-play:hover{background:var(--accent)}
.play-icon{margin-left:4px;line-height:1}
.video-title{font-size:1.35rem;margin:14px 0 8px}
.video-meta .meta{margin:0}
.ad-slot{margin:0}                 /* empty/disabled slots take no space */
.ad-slot.ad-live{display:flex;justify-content:center;margin:18px 0;overflow:hidden}
.ad-frame{border:0;display:block;max-width:100%}
/* 728x90 leaderboard: desktop only (too wide for phones) */
@media(max-width:767px){ .ad-slot.ad-live.ad-header{display:none} }

/* Fixed left/right 160x600 skyscraper rails. Shown on wide screens; the content
   column shrinks just enough to leave gutter room so the rails never overlap it. */
.side-rail{display:none}
@media(min-width:1400px){
  .wrap{max-width:min(1280px, calc(100vw - 380px))}
  .side-rail{display:block;position:fixed;top:50%;transform:translateY(-50%);z-index:20;
    width:160px;max-height:100vh;overflow:hidden}
  .side-rail-left{left:16px}
  .side-rail-right{right:16px}
  .side-rail .ad-slot.ad-live{margin:0}
}

/* ---- Video tags ---- */
.video-tags{margin:14px 0}
.tags-heading{font-size:1rem;margin:0 0 8px}

/* ---- Category index ---- */
.category-grid{list-style:none;display:grid;gap:12px;grid-template-columns:repeat(2,1fr);padding:0;margin:18px 0}
@media(min-width:600px){ .category-grid{grid-template-columns:repeat(3,1fr)} }
@media(min-width:900px){ .category-grid{grid-template-columns:repeat(4,1fr)} }
.category-card{display:flex;flex-direction:column;gap:4px;padding:16px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius)}
.category-card:hover{border-color:var(--accent)}
.category-name{font-weight:600}
.category-count{font-size:.8rem;color:var(--muted)}

/* ---- Pagination (spec 48) ---- */
.pagination{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin:24px 0;justify-content:center}
.pagination a,.pagination .current{padding:8px 12px;border-radius:8px;border:1px solid var(--line);
  background:var(--surface);min-width:40px;text-align:center}
.pagination .current{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}
.pagination a:hover{border-color:var(--accent)}
.pagination .gap{padding:0 4px;color:var(--muted)}
.notice{padding:40px 0}
.notice h1{margin-top:0}

/* ---- Legal pages ---- */
.legal{max-width:70ch;line-height:1.65}
.legal h1{margin:6px 0 4px}
.legal h2{font-size:1.1rem;margin:26px 0 8px}
.legal p,.legal li{color:var(--text)}
.legal ol,.legal ul{padding-left:20px}
.legal li{margin:6px 0}
.legal a{color:var(--accent-2)}

/* ---- Footer ---- */
.site-footer{margin-top:40px;border-top:1px solid var(--line);padding:24px 0;color:var(--muted)}
.site-footer nav{display:flex;gap:16px;margin-bottom:8px}
.footer-note{font-size:.82rem;margin:0}

/* ---- Responsive (spec 11) - fluid YouTube-style columns ---- */
@media(min-width:560px){ .video-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))} }
@media(min-width:768px){
  .main-nav{display:flex} .menu-toggle{display:none} .mobile-nav{display:none!important}
  .video-grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
}
@media(min-width:1400px){ .video-grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))} }

@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}