:root{
  --bg:#f6f7f9; --card:#ffffff; --ink:#1a1d21; --muted:#666f7a;
  --line:#e4e8ee; --accent:#2e5a88; --accent-ink:#fff; --heart:#d6336c;
  --shadow:0 1px 3px rgba(20,30,45,.08),0 6px 20px rgba(20,30,45,.05);
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#0f1319; --card:#171c24; --ink:#e8ecf1; --muted:#9aa4b0;
    --line:#252c37; --accent:#5b9bd8; --accent-ink:#0f1319; --heart:#ff6b9d;
    --shadow:0 1px 3px rgba(0,0,0,.4),0 6px 20px rgba(0,0,0,.3);
  }
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);
  font:15px/1.55 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;}
a{color:inherit;text-decoration:none}

.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:14px 20px;background:var(--card);border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:10;flex-wrap:wrap;}
.brand{font-weight:800;font-size:18px;color:var(--accent)}
.topbar nav{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.topbar nav a{color:var(--muted);font-weight:600;padding:4px 2px}
.topbar nav a.on{color:var(--ink);border-bottom:2px solid var(--accent)}
.post-btn{background:var(--accent);color:var(--accent-ink)!important;
  padding:8px 14px!important;border-radius:999px;border:none;cursor:pointer;
  font-weight:700;font-size:14px;}
.post-btn.big{display:inline-block;padding:12px 20px!important;font-size:15px;margin-top:6px}

.wrap{max-width:820px;margin:0 auto;padding:22px 16px 60px}
.hero h1{margin:0 0 6px;font-size:26px}
.hero p{margin:0 0 20px;color:var(--muted);max-width:60ch}

.grid{display:flex;flex-direction:column;gap:14px}
.grid.single{margin-bottom:26px}

.card{background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:16px;box-shadow:var(--shadow)}
.card-head{display:flex;justify-content:space-between;align-items:flex-start;gap:10px}
.titles{display:flex;flex-direction:column}
.track-title{font-weight:700;font-size:17px}
.artist{color:var(--muted);font-size:13px}
.badge{font-size:11px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);
  border:1px solid var(--line);border-radius:999px;padding:2px 9px;white-space:nowrap}
.note{margin:10px 0 0;color:var(--muted);font-size:14px}

.player{margin:12px 0 6px}
.play-btn{background:transparent;border:1px solid var(--accent);color:var(--accent);
  border-radius:999px;padding:8px 18px;font-weight:700;cursor:pointer;font-size:14px}
.play-btn:hover{background:var(--accent);color:var(--accent-ink)}
.frame{width:100%;height:160px;border-radius:10px;border:0}
.frame[src*="youtube"]{height:220px}
.audio{width:100%}
.ext{color:var(--accent);font-weight:600}

.stats{display:flex;align-items:center;gap:16px;margin-top:12px;flex-wrap:wrap}
.like-btn{background:none;border:none;cursor:pointer;color:var(--muted);
  display:inline-flex;align-items:center;gap:6px;font:inherit;font-weight:600;padding:0}
.like-btn .heart{font-size:18px;line-height:1}
.like-btn.liked{color:var(--heart)}
.stat{color:var(--muted);font-size:14px}
.stat.rate{color:var(--accent);font-weight:700}
.comments-link{margin-left:auto;color:var(--muted);font-size:14px;font-weight:600}

.empty{text-align:center;padding:50px 0;color:var(--muted)}
.back{color:var(--muted);font-weight:600;display:inline-block;margin-bottom:14px}

.post-form,.comment-form{display:flex;flex-direction:column;gap:14px;
  background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:18px;box-shadow:var(--shadow)}
.post-form label{display:flex;flex-direction:column;gap:6px;font-weight:600;font-size:14px}
input,textarea{font:inherit;padding:10px 12px;border:1px solid var(--line);
  border-radius:9px;background:var(--bg);color:var(--ink);width:100%}
input:focus,textarea:focus{outline:2px solid var(--accent);border-color:var(--accent)}
button[type=submit]{align-self:flex-start;background:var(--accent);color:var(--accent-ink);
  border:none;border-radius:999px;padding:11px 20px;font-weight:700;cursor:pointer;font-size:15px}

.errors{background:#fdecec;border:1px solid #f3b4b4;color:#8a1f1f;
  border-radius:10px;padding:10px 14px;list-style:none;margin:0 0 16px}
@media (prefers-color-scheme: dark){.errors{background:#3a1e1e;border-color:#6b2f2f;color:#ffb4b4}}

.comments{margin-top:26px}
.comments h2{font-size:18px;margin:0 0 12px}
.comment-form{margin-bottom:18px}
.comment-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px}
.comment-list li{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.c-head{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-bottom:4px}
.c-who{font-weight:700;color:var(--accent)}
.c-body{margin:0}
.muted{color:var(--muted)}

.foot{text-align:center;color:var(--muted);font-size:13px;padding:26px 16px 40px;max-width:60ch;margin:0 auto}

/* ---- stats / A-B ---- */
.ab{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:560px){.ab{grid-template-columns:1fr}}
.ab-col{background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:16px;box-shadow:var(--shadow)}
.ab-col.fair{border-top:4px solid var(--accent)}
.ab-col.popular{border-top:4px solid #b0757f}
.ab-col h2{margin:0 0 2px;font-size:18px}
.ab-col .sub{margin:0 0 12px;color:var(--muted);font-size:13px}
.metric{display:flex;align-items:baseline;gap:8px;padding:6px 0;border-top:1px solid var(--line)}
.metric .num{font-size:22px;font-weight:800;min-width:56px}
.metric .lab{color:var(--muted);font-size:13px}
.metric.small .num{font-size:16px}
.readnote{color:var(--muted);font-size:14px;margin:16px 0 0;max-width:70ch}
.tbl-h{margin:26px 0 10px;font-size:18px}
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px}
.tbl{width:100%;border-collapse:collapse;font-size:14px;background:var(--card)}
.tbl th,.tbl td{padding:9px 12px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}
.tbl th{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.03em}
.tbl tr:last-child td{border-bottom:none}

/* ---- upload form extras ---- */
.hint{display:block;margin-top:4px;color:var(--muted);font-size:12px;font-weight:400}
.or-divider{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:13px;margin:2px 0}
.or-divider::before,.or-divider::after{content:"";flex:1;height:1px;background:var(--line)}
input[type=file]{padding:8px;background:var(--bg);border:1px dashed var(--line);border-radius:9px;cursor:pointer;width:100%}

/* ---- discussion board ---- */
.new-thread{margin:0 0 20px}
.new-thread summary{display:inline-block;list-style:none;cursor:pointer}
.new-thread summary::-webkit-details-marker{display:none}
.thread-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px}
.thread-list li{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 16px;box-shadow:var(--shadow)}
.thread-title{font-weight:700;font-size:17px}
.thread-snip{margin:6px 0 8px;color:var(--muted);font-size:14px}
.thread-meta{display:flex;gap:8px;align-items:center;color:var(--muted);font-size:13px}
.thread-meta .replies{margin-left:auto;font-weight:600}
.op h1{margin:0 0 8px;font-size:24px}
.op-body{white-space:pre-wrap;margin:8px 0 0}
.op{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px;box-shadow:var(--shadow);margin-bottom:8px}