/* BrainPlay Arena — shared theme: emerald green + gold, mobile-first */
:root{
  --green-950:#04231a; --green-900:#06392a; --green-800:#0a4d36; --green-700:#0c6245;
  --green-600:#0e7a52; --green-500:#12a066; --green-100:#dcf2e6; --green-50:#eef8f2;
  --gold:#d4af37; --gold-2:#f0d27a; --gold-dark:#a8842a;
  --ink:#12211b; --muted:#5a6f66; --bg:#f7f4ec; --card:#ffffff; --line:#e3ddcb;
  --danger:#b3261e; --radius:16px;
  --shadow:0 10px 30px rgba(6,57,42,.13);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Segoe UI",system-ui,-apple-system,Roboto,"Helvetica Neue",Arial,sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.55;-webkit-text-size-adjust:100%}
a{color:var(--green-700);text-decoration:none}
a:hover{text-decoration:underline}
img,svg{max-width:100%}
h1,h2,h3{line-height:1.2;margin:.2em 0 .5em}
h1{font-size:clamp(1.7rem,4.5vw,2.6rem)}
h2{font-size:clamp(1.3rem,3.4vw,1.8rem)}
.wrap{max-width:1120px;margin:0 auto;padding:0 16px}

/* Header / footer (injected by common.js) */
.site-header{background:linear-gradient(120deg,var(--green-950),var(--green-900) 55%,var(--green-800));
  color:#fff;position:sticky;top:0;z-index:50;box-shadow:0 4px 18px rgba(0,0,0,.25)}
.site-header .wrap{display:flex;align-items:center;gap:14px;padding-top:10px;padding-bottom:10px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:1.25rem;letter-spacing:.3px}
.logo:hover{text-decoration:none}
.logo .mark{width:38px;height:38px;flex:0 0 38px}
.logo b{color:var(--gold-2)}
.main-nav{display:flex;gap:4px;flex-wrap:wrap;margin-left:auto}
.main-nav a{color:#eaf5ee;padding:8px 12px;border-radius:999px;font-size:.95rem;font-weight:600}
.main-nav a:hover{background:rgba(255,255,255,.12);text-decoration:none;color:#fff}
.main-nav a.cta{background:var(--gold);color:var(--green-950)}
.main-nav a.cta:hover{background:var(--gold-2)}
.site-footer{background:var(--green-950);color:#cfe6da;margin-top:56px}
.site-footer .wrap{padding-top:28px;padding-bottom:28px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:22px}
.site-footer h4{color:var(--gold-2);margin:0 0 8px;font-size:1rem}
.site-footer a{color:#cfe6da;display:block;padding:3px 0;font-size:.93rem}
.footer-note{border-top:1px solid rgba(255,255,255,.14);margin-top:22px;padding-top:14px;font-size:.85rem;color:#9dbfae}

/* Hero */
.hero{background:linear-gradient(135deg,var(--green-900),var(--green-700));color:#fff;border-radius:0 0 28px 28px;
  padding:44px 0 40px;position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;right:-70px;top:-70px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(212,175,55,.35),transparent 65%)}
.hero p.lead{font-size:clamp(1rem,2.6vw,1.2rem);color:#dff2e5;max-width:640px}
.hero .gold{color:var(--gold-2)}
.btn{display:inline-block;background:var(--gold);color:var(--green-950);font-weight:700;border:none;cursor:pointer;
  padding:12px 22px;border-radius:999px;font-size:1rem;transition:transform .15s,background .15s;box-shadow:0 6px 16px rgba(0,0,0,.18)}
.btn:hover{background:var(--gold-2);text-decoration:none;transform:translateY(-1px)}
.btn.secondary{background:#fff;color:var(--green-800);border:2px solid var(--green-600)}
.btn.secondary:hover{background:var(--green-50)}
.btn.small{padding:8px 16px;font-size:.92rem}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}

/* Search + filters */
.toolbar{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);
  padding:16px;margin:-26px auto 8px;position:relative;z-index:2}
.search-row{display:flex;gap:10px;flex-wrap:wrap}
.search-row input[type=search]{flex:1 1 240px;padding:12px 16px;border:2px solid var(--green-100);border-radius:999px;
  font-size:1rem;outline:none;background:var(--green-50)}
.search-row input[type=search]:focus{border-color:var(--green-600);background:#fff}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.chip{border:2px solid var(--green-600);background:#fff;color:var(--green-800);padding:6px 14px;border-radius:999px;
  cursor:pointer;font-weight:600;font-size:.9rem;transition:all .15s}
.chip:hover{background:var(--green-100)}
.chip.active{background:var(--green-700);color:#fff}
.no-results{display:none;text-align:center;color:var(--muted);padding:26px 0}

/* Game cards */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:18px;margin:22px 0}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  box-shadow:0 4px 14px rgba(6,57,42,.08);display:flex;flex-direction:column;transition:transform .18s,box-shadow .18s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.card .art{height:118px;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.card .art .glyph{font-size:3rem;color:rgba(255,255,255,.95);text-shadow:0 3px 10px rgba(0,0,0,.25);font-weight:800}
.card .art:after{content:"";position:absolute;inset:0;background:
  radial-gradient(circle at 85% 15%,rgba(255,255,255,.22),transparent 45%)}
.card .body{padding:14px 16px 16px;display:flex;flex-direction:column;gap:6px;flex:1}
.card h3{margin:0;font-size:1.08rem}
.card p{margin:0;color:var(--muted);font-size:.9rem;flex:1}
.tag{display:inline-block;background:var(--green-100);color:var(--green-800);border-radius:999px;
  padding:2px 10px;font-size:.75rem;font-weight:700;align-self:flex-start}
.card .play{margin-top:8px;font-weight:700;color:var(--gold-dark)}
.card a.stretch{color:inherit}
.card a.stretch:hover{text-decoration:none}

/* Sections / strips */
.section{margin:38px 0}
.trust-strip{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin:26px 0}
.trust-item{background:var(--card);border:1px solid var(--line);border-left:5px solid var(--gold);border-radius:12px;
  padding:12px 14px;font-weight:600;font-size:.95rem}
.daily-banner{background:linear-gradient(120deg,var(--green-900),var(--green-600));color:#fff;border-radius:var(--radius);
  padding:22px;display:flex;gap:18px;align-items:center;flex-wrap:wrap;box-shadow:var(--shadow)}
.daily-banner h2{margin:0;color:#fff}
.daily-banner p{margin:4px 0 0;color:#dcf2e6}
.daily-banner .btn{margin-left:auto}

/* Game pages */
.breadcrumbs{font-size:.88rem;color:var(--muted);margin:18px 0 6px}
.breadcrumbs a{color:var(--muted)}
.game-shell{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);
  padding:20px;margin:14px 0 22px}
.game-head{display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.game-head .art-mini{width:58px;height:58px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  font-size:1.7rem;color:#fff;font-weight:800;flex:0 0 58px}
.controls{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:14px 0}
.controls label{font-weight:600;font-size:.92rem}
select,input[type=text],input[type=number]{padding:9px 12px;border:2px solid var(--green-100);border-radius:10px;
  font-size:1rem;background:#fff;outline:none}
select:focus,input:focus{border-color:var(--green-600)}
.hud{display:flex;gap:10px;flex-wrap:wrap;margin:10px 0}
.hud .stat{background:var(--green-50);border:1px solid var(--green-100);border-radius:10px;padding:7px 14px;
  font-weight:700;font-size:.95rem}
.hud .stat span{color:var(--green-700)}
.status{min-height:1.5em;font-weight:600;margin:8px 0}
.status.win{color:var(--green-600)}
.status.lose{color:var(--danger)}
details.howto{background:var(--green-50);border:1px solid var(--green-100);border-radius:12px;padding:12px 16px;margin:16px 0}
details.howto summary{font-weight:700;cursor:pointer;color:var(--green-800)}
.best-note{font-size:.85rem;color:var(--muted)}
.related{display:flex;gap:10px;flex-wrap:wrap;margin-top:8px}
.related a{background:#fff;border:2px solid var(--green-100);padding:8px 14px;border-radius:999px;font-weight:600;font-size:.9rem}
.related a:hover{border-color:var(--gold);text-decoration:none}

/* Generic boards */
.board{display:grid;gap:4px;margin:12px auto;width:fit-content;max-width:100%}
.cellbtn{border:2px solid var(--green-100);background:#fff;border-radius:8px;cursor:pointer;font-weight:700;
  display:flex;align-items:center;justify-content:center;user-select:none;-webkit-user-select:none;touch-action:manipulation}
.cellbtn:hover:not(:disabled){border-color:var(--gold)}
.cellbtn:disabled{cursor:default;opacity:.92}

/* Article / trust pages */
.article{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);
  padding:26px;margin:20px 0 30px}
.article h2{margin-top:1.1em}
.article li{margin:.3em 0}
.notice{background:#fdf6e0;border:1px solid var(--gold);border-radius:12px;padding:14px 18px;margin:16px 0}
table.scores{border-collapse:collapse;width:100%;margin:12px 0}
table.scores th,table.scores td{border:1px solid var(--line);padding:8px 12px;text-align:left}
table.scores th{background:var(--green-50)}

@media (max-width:560px){
  .toolbar{margin-top:-18px}
  .game-shell{padding:14px}
  .daily-banner .btn{margin-left:0}
}
@keyframes pop{0%{transform:scale(.85);opacity:.4}100%{transform:scale(1);opacity:1}}
.pop{animation:pop .18s ease-out}