/* Muôn Nơi · plays.muonnoi.org — design system (đồng bộ với muonnoi app.css) */
:root{
  --bg:#0b0c10; --bg2:#0d0f14; --card:#101216; --text:#e9eef7; --muted:#aab3c2;
  --line:rgba(255,255,255,.08); --line2:rgba(255,255,255,.16);
  --brand:#7c5cff; --brand2:#22d3ee; --ok:#30d158; --warn:#ffd60a; --bad:#ff453a;
  --radius:18px; --radius-sm:12px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);
  font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial}
a{color:inherit;text-decoration:none}
.container{max-width:1100px;margin:0 auto;padding:24px}

/* topbar */
.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:12px}
.brand .mark{width:36px;height:36px;border-radius:12px;
  background:linear-gradient(135deg,var(--brand),var(--brand2))}
.brand h1{font-size:16px;margin:0;letter-spacing:.5px}
.nav{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.pill{border:1px solid var(--line);background:rgba(255,255,255,.02);
  padding:8px 12px;border-radius:999px;color:var(--muted);cursor:pointer;font-size:13px}
.pill:hover{border-color:var(--line2)}
.pill.active{color:var(--text);border-color:var(--brand)}
.small{font-size:12px;color:var(--muted);line-height:1.5}

/* hero */
.hero{margin:18px 0;padding:22px;border-radius:var(--radius);
  border:1px solid var(--line);background:
   radial-gradient(120% 120% at 0% 0%, rgba(124,92,255,.18), transparent 50%),
   radial-gradient(120% 120% at 100% 0%, rgba(34,211,238,.14), transparent 50%), var(--card)}
.hero h2{margin:0 0 8px;font-size:22px}
.hero .tag{font-size:12px;color:var(--brand2);letter-spacing:1px;text-transform:uppercase}

/* menu điều hướng (sticky) */
.menu{position:sticky;top:0;z-index:40;display:flex;gap:6px;flex-wrap:wrap;align-items:center;
  padding:10px 0;margin:8px 0 4px;background:linear-gradient(180deg,var(--bg) 70%,transparent);
  backdrop-filter:blur(6px)}
.menu a{font-size:13px;color:var(--muted);padding:7px 12px;border-radius:999px;border:1px solid var(--line)}
.menu a:hover{color:var(--text);border-color:var(--line2)}
.menu a.brandlink{color:var(--text);border-color:var(--brand)}

/* filters */
.filters{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0}

/* bộ sưu tập (collections / học viện) */
.cols{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}
.col{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.col .head{display:flex;gap:12px;align-items:flex-start;padding:16px;cursor:pointer;
  background:radial-gradient(120% 120% at 0% 0%, rgba(124,92,255,.12), transparent 60%)}
.col .head:hover{background:radial-gradient(120% 120% at 0% 0%, rgba(124,92,255,.2), transparent 60%)}
.col .ic{width:46px;height:46px;flex:0 0 46px;border-radius:13px;display:flex;align-items:center;
  justify-content:center;font-size:24px;background:linear-gradient(135deg,var(--brand),var(--brand2))}
.col h3{margin:0 0 3px;font-size:15px}
.col .meta{display:flex;gap:6px;flex-wrap:wrap;margin:6px 0}
.col .tag2{font-size:10px;padding:2px 8px;border-radius:999px;border:1px solid var(--line);color:var(--muted)}
.col .tag2.bi{color:var(--brand2);border-color:rgba(34,211,238,.35)}
.col .tag2.age{color:var(--warn);border-color:rgba(255,214,10,.35)}
.col .d{font-size:12px;color:var(--muted);line-height:1.5}
.col .chev{margin-left:auto;color:var(--muted);font-size:13px;align-self:center}
.col .body{display:none;border-top:1px solid var(--line);padding:8px 16px 14px}
.col.open .body{display:block}
.col.open .chev{transform:rotate(180deg)}
.col .glist{list-style:none;margin:8px 0 0;padding:0;columns:2;column-gap:18px}
@media (max-width:520px){ .col .glist{columns:1} }
.col .glist li{break-inside:avoid;padding:5px 0;font-size:12.5px;border-bottom:1px solid var(--line)}
.col .glist li b{display:block;font-weight:600}
.col .glist li span{color:var(--muted);font-size:11px}
.col .doclink{display:inline-block;margin-top:10px;font-size:12px;color:var(--brand2)}

/* grid of games */
.games{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.gcard{position:relative;display:block;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:16px;min-height:150px;transition:.15s;overflow:hidden}
.gcard:hover{border-color:var(--line2);transform:translateY(-2px)}
.gcard .thumb{width:44px;height:44px;border-radius:12px;margin-bottom:10px;
  background:linear-gradient(135deg,var(--brand),var(--brand2));display:flex;
  align-items:center;justify-content:center;font-size:22px}
.gcard h3{margin:0 0 6px;font-size:15px}
.gcard .genre{font-size:11px;color:var(--muted)}
.gcard .desc{font-size:12px;color:var(--muted);margin-top:8px;line-height:1.5}
.gcard.locked{opacity:.62}
.gcard.locked:hover{transform:none}
.badge{position:absolute;top:12px;right:12px;font-size:10px;padding:3px 8px;border-radius:999px;
  border:1px solid var(--line);color:var(--muted);background:var(--bg2)}
.badge.live{color:var(--ok);border-color:rgba(48,209,88,.4)}
.badge.soon{color:var(--warn);border-color:rgba(255,214,10,.35)}
.gcard .pg{margin-top:10px;font-size:11px;color:var(--brand2)}

/* section heading */
.section{margin:28px 0 12px;display:flex;align-items:baseline;gap:10px}
.section h2{font-size:14px;margin:0;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:1px}
.section .count{font-size:12px;color:var(--muted)}

.hr{height:1px;background:var(--line);margin:16px 0}
.footer{margin-top:30px;color:var(--muted);font-size:12px;text-align:center;line-height:1.6}

/* ===== Game shell (dùng trong từng game) ===== */
.game-shell{max-width:560px;margin:0 auto;padding:16px}
.game-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}
.game-top a.back{color:var(--muted);font-size:13px}
.hud{display:flex;gap:14px;flex-wrap:wrap;margin:10px 0}
.hud .stat{flex:1;min-width:78px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-sm);padding:10px 12px;text-align:center}
.hud .stat .k{font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px}
.hud .stat .v{font-size:20px;font-weight:700;margin-top:2px}
.stage{position:relative;width:100%;background:var(--bg2);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;touch-action:none}
canvas{display:block;width:100%;height:auto}
.btn{background:var(--text);color:#0b0c10;border:none;border-radius:14px;
  padding:12px 16px;font-weight:700;cursor:pointer;font-size:14px}
.btn.secondary{background:transparent;color:var(--text);border:1px solid var(--line)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn.full{width:100%}
.row{display:flex;gap:10px}

/* overlay (start / game over) */
.overlay{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;
  justify-content:center;gap:14px;text-align:center;padding:24px;
  background:rgba(11,12,16,.82);backdrop-filter:blur(4px)}
.overlay h2{margin:0;font-size:24px}
.overlay p{margin:0;max-width:380px}
.overlay.hidden{display:none}
.note{font-size:12px;color:var(--brand2)}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);
  background:var(--card);border:1px solid var(--line2);padding:10px 16px;border-radius:999px;
  font-size:13px;opacity:0;transition:.25s;pointer-events:none;z-index:50}
.toast.show{opacity:1}

/* ===== Modal (consent / cổng đăng ký) — dùng bởi plays-sdk.js ===== */
.mn-modal-bg{position:fixed;inset:0;background:rgba(5,6,9,.78);backdrop-filter:blur(6px);
  z-index:1000;display:flex;align-items:center;justify-content:center;padding:18px}
.mn-modal{max-width:460px;width:100%;background:var(--card);border:1px solid var(--line2);
  border-radius:var(--radius);padding:22px;max-height:88vh;overflow:auto}
.mn-modal h3{margin:0 0 6px;font-size:18px}
.mn-modal p{font-size:13px;color:var(--muted);line-height:1.6;margin:8px 0}
.mn-modal a{color:var(--brand2)}
.mn-modal .legal{max-height:160px;overflow:auto;border:1px solid var(--line);border-radius:12px;
  padding:10px 12px;font-size:11.5px;color:var(--muted);line-height:1.6;margin:10px 0}
.mn-modal .agree{display:flex;gap:8px;align-items:flex-start;font-size:12.5px;color:var(--text);margin:10px 0}
.mn-modal .agree input{width:auto;margin-top:2px}
.mn-modal .acts{display:flex;gap:10px;margin-top:12px}
.mn-modal .acts .btn{flex:1}
.mn-warn{font-size:12px;color:var(--warn);border:1px solid rgba(255,214,10,.3);
  border-radius:10px;padding:8px 10px;margin:8px 0}