:root{
  --bg:#0b1020;
  --card:#111936;
  --muted:#a9b3d3;
  --text:#eaf0ff;
  --line:rgba(255,255,255,.10);
  --accent:#7c5cff;
  --accent2:#22c55e;
  --danger:#ef4444;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --radius: 14px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Helvetica Neue", sans-serif;
  background: radial-gradient(1000px 600px at 15% 10%, rgba(124,92,255,.25), transparent 60%),
              radial-gradient(900px 500px at 85% 0%, rgba(34,197,94,.16), transparent 60%),
              var(--bg);
  color:var(--text);
}

.app{max-width:1100px;margin:0 auto;padding:18px}

.topbar{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius);
  background: rgba(17,25,54,.85);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow);
}
.brand{display:flex;gap:12px;align-items:center}
.logo{
  width:40px;height:40px;border-radius:12px;
  background: linear-gradient(135deg, rgba(124,92,255,.95), rgba(34,197,94,.75));
  display:flex;align-items:center;justify-content:center;
  font-weight:800;
}
.title{font-weight:800;letter-spacing:.2px}
.subtitle{color:var(--muted);font-size:13px;margin-top:2px}

.top-actions{display:flex;gap:10px;align-items:center}

.layout{display:grid;grid-template-columns: 1.2fr 1.6fr .9fr; gap:14px; margin-top:14px}
@media (max-width: 980px){
  .layout{grid-template-columns:1fr;}
}

.card{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background: rgba(17,25,54,.78);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow);
  padding:14px;
}

h2{margin:0 0 10px 0;font-size:16px}
label{display:block;font-size:12px;color:var(--muted);margin:10px 0 6px}
input,select{
  width:100%;padding:10px 10px;border-radius:12px;border:1px solid var(--line);
  background: rgba(9,13,30,.6); color: var(--text);
  outline:none;
}
input:focus,select:focus{border-color: rgba(124,92,255,.6)}

.row{display:flex;gap:10px;align-items:center}
.row.gap{margin-top:12px}
.grid2{display:grid;grid-template-columns:1fr 1fr; gap:12px}
.grid3{display:grid;grid-template-columns:1fr 1fr 1fr; gap:12px}
@media (max-width: 980px){
  .grid2,.grid3{grid-template-columns:1fr}
}

.btn{
  border:1px solid rgba(124,92,255,.55);
  background: rgba(124,92,255,.18);
  color: var(--text);
  padding:10px 12px;border-radius:12px;
  cursor:pointer;
  font-weight:700;
}
.btn:hover{background: rgba(124,92,255,.28)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.ghost{border-color: var(--line); background: rgba(255,255,255,.06)}
.btn.ghost:hover{background: rgba(255,255,255,.10)}

.hint{color:var(--muted);font-size:12px}
.divider{height:1px;background:var(--line);margin:14px 0}

.check{display:flex;gap:10px;align-items:center;margin-top:10px;color:var(--text)}
.check span{color:var(--text);font-size:13px}

.game-header{display:flex;justify-content:space-between;gap:12px;align-items:flex-start;flex-wrap:wrap}
.roomline{margin:0;font-size:16px}
.pill{display:inline-block;padding:4px 10px;border-radius:999px;border:1px solid var(--line);background: rgba(255,255,255,.06);font-size:12px}
.meta{color:var(--muted);font-size:12px;margin-top:6px}

.scores{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}
.score{
  border:1px solid var(--line);
  background: rgba(255,255,255,.06);
  padding:8px 10px;border-radius:12px;
  min-width: 120px;
}
.score .n{font-size:12px;color:var(--muted)}
.score .v{font-weight:900;margin-top:2px}
.score.me{border-color: rgba(34,197,94,.6)}
.score.turn{border-color: rgba(124,92,255,.7)}

.board-wrap{margin-top:12px}
.board{
  display:grid;
  gap:10px;
  user-select:none;
}

.tile{
  position:relative;
  border-radius:14px;
  border:1px solid var(--line);
  background: rgba(9,13,30,.55);
  aspect-ratio: 1 / 1;
  cursor:pointer;
  overflow:hidden;
}
.tile:disabled{cursor:not-allowed;opacity:.75}
.tile-inner{
  position:absolute; inset:0;
  display:flex;align-items:center;justify-content:center;
  font-weight:900;
  transform: translateZ(0);
  transition: transform 140ms ease, background 140ms ease;
}
.tile.faceup .tile-inner{
  background: rgba(255,255,255,.06);
}
.tile.matched{
  border-color: rgba(34,197,94,.55);
  background: rgba(34,197,94,.10);
}

.badge{
  font-size: 20px;
  letter-spacing:.3px;
}

.footerline{display:flex;justify-content:space-between;gap:10px;margin-top:10px;flex-wrap:wrap}
.small{font-size:12px;color:var(--muted)}

.log{font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; font-size:12px;
  color: rgba(234,240,255,.92);
  background: rgba(9,13,30,.45);
  border:1px solid var(--line);
  border-radius: 12px;
  padding:10px;
  height: 320px;
  overflow:auto;
  white-space: pre-wrap;
}

/* Themes */
body[data-theme="classic"]{--accent:#7c5cff;--accent2:#22c55e}
body[data-theme="ocean"]{--accent:#38bdf8;--accent2:#22c55e}
body[data-theme="mono"]{--accent:#e5e7eb;--accent2:#a3a3a3}