:root {
    color-scheme: dark;
    --bg:#000; --panel:#0e0e10; --line:#1f1f22; --fg:#f4f4f5; --dim:#8b8b90;
    /* The accent is white. The mark is white line art on black and the surface
       follows it -- there is no second hue anywhere that is not semantic. */
    --accent:#fff; --felt:#0e0e10; --feltEdge:#000; --red:#ff6b60; --green:#4ade80;
    --blue:#7aa7ff;
  }
  * { box-sizing:border-box; }
  html,body { margin:0; min-height:100%; background:var(--bg); color:var(--fg);
    font:14px/1.55 Inter,-apple-system,Segoe UI,Roboto,sans-serif; }
  button { font:inherit; cursor:pointer; border:0; border-radius:9px; }
  .wrap { max-width:1000px; margin:0 auto; padding:20px 16px 60px; }

  header { display:flex; align-items:center; gap:14px; margin-bottom:22px; flex-wrap:wrap; }
  .logo { font-size:19px; letter-spacing:.24em; color:var(--accent); font-weight:700; }
  .spacer { flex:1; }
  .chips { background:var(--panel); border:1px solid var(--line); border-radius:999px;
    padding:6px 14px; font-weight:700; }
  .chips b { color:var(--accent); }
  .ghost { background:transparent; color:var(--dim); border:1px solid var(--line); padding:6px 12px; }
  .ghost:hover { color:var(--fg); }

  /* ---------- game picker ---------- */
  h2 { font-size:13px; letter-spacing:.14em; text-transform:uppercase; color:var(--dim);
       margin:26px 0 12px; font-weight:700; }
  .picker { display:grid; grid-template-columns:repeat(auto-fit,minmax(230px,1fr)); gap:14px; }
  .gamecard { background:var(--panel); border:1px solid var(--line); border-radius:16px;
    padding:18px; text-align:left; color:var(--fg); transition:.15s; position:relative; overflow:hidden; }
  .gamecard:hover { border-color:var(--accent); transform:translateY(-2px); }
  .gamecard h3 { margin:12px 0 6px; font-size:17px; }
  .gamecard p { margin:0; color:var(--dim); font-size:13px; min-height:38px; }
  .gamecard .meta { margin-top:10px; font-size:12px; color:var(--accent); }
  .art { height:64px; display:flex; align-items:center; gap:6px; }

  /* ---------- playing cards ---------- */
  .card { width:52px; height:74px; border-radius:7px; background:#fafafa; color:#101014;
    box-shadow:0 2px 6px rgba(0,0,0,.45); position:relative; flex:none;
    display:flex; flex-direction:column; justify-content:space-between; padding:5px 6px;
    font-weight:800; line-height:1; }
  .card.red { color:#d8443f; }
  .card .mid { position:absolute; inset:0; display:flex; align-items:center; justify-content:center;
    font-size:26px; opacity:.9; }
  .card .br { align-self:flex-end; transform:rotate(180deg); }
  .card.back { background:repeating-linear-gradient(45deg,#1b1b20,#1b1b20 5px,#131317 5px,#131317 10px);
    border:2px solid #2c2c33; }
  .card.sm { width:38px; height:54px; font-size:11px; border-radius:5px; }
  .card.sm .mid { font-size:18px; }
  .hand { display:flex; gap:5px; }

  /* ---------- felt table ---------- */
  .felt { background:radial-gradient(ellipse at 50% 34%, #17171a 0%, var(--felt) 56%, var(--feltEdge) 100%);
    border:1px solid var(--line); border-radius:20px; padding:22px; min-height:300px;
    box-shadow:inset 0 1px 0 rgba(255,255,255,.04); }
  .board { display:flex; gap:7px; justify-content:center; margin:12px 0; min-height:74px; }
  .pot { text-align:center; color:var(--accent); font-weight:800; letter-spacing:.06em; }
  .seats { display:grid; grid-template-columns:repeat(auto-fit,minmax(170px,1fr)); gap:10px; margin-top:16px; }
  .seat { background:rgba(0,0,0,.34); border:1px solid rgba(255,255,255,.09); border-radius:12px; padding:10px; }
  .seat.turn { border-color:var(--accent); box-shadow:0 0 0 2px rgba(255,255,255,.25); }
  .seat.folded { opacity:.42; }
  .seat .who { display:flex; align-items:center; gap:6px; font-weight:700; margin-bottom:6px; }
  .seat .who .tag { font-size:10px; padding:1px 6px; border-radius:5px; background:rgba(255,255,255,.1);
    color:var(--dim); font-weight:600; letter-spacing:.06em; }
  .seat .who .tag.you { background:rgba(255,255,255,.2); color:var(--accent); }
  .seat .line { font-size:12px; color:var(--dim); }

  /* ---------- chess ---------- */
  .chessboard { display:grid; grid-template-columns:repeat(8,1fr); width:min(456px,100%);
    margin:0 auto; border:1px solid var(--line); border-radius:10px; overflow:hidden;
    box-shadow:0 10px 30px rgba(0,0,0,.45); }
  .sq { aspect-ratio:1; display:flex; align-items:center; justify-content:center;
    font-size:min(7.4vw,34px); line-height:1; position:relative; user-select:none; }
  .sq.light { background:#c8c8cf; }
  .sq.dark { background:#6b6b74; }
  .sq.sel { box-shadow:inset 0 0 0 4px rgba(255,255,255,.9); }
  .sq.target::after { content:''; position:absolute; width:26%; height:26%; border-radius:50%;
    background:rgba(255,255,255,.38); }
  .sq.target.occupied::after { width:86%; height:86%; background:transparent;
    border:4px solid rgba(255,255,255,.5); }
  .sq.check { background:var(--red) !important; }
  .sq .coord { position:absolute; font-size:13px; font-weight:900; line-height:1;
    pointer-events:none; font-family:ui-monospace,Consolas,monospace;
    text-shadow:0 1px 2px rgba(0,0,0,.35); }
  .sq .coord.rank { top:3px; left:4px; }
  .sq .coord.file { bottom:3px; right:4px; }
  .sq.light .coord { color:rgba(0,0,0,.55); }
  .sq.dark .coord { color:rgba(255,255,255,.88); }
  .sq.from { box-shadow:inset 0 0 0 3px rgba(255,255,255,.45); }
  .sq.to { box-shadow:inset 0 0 0 3px rgba(255,255,255,.9); }
  .movelist { margin-top:14px; background:var(--panel); border:1px solid var(--line);
    border-radius:12px; padding:10px 14px; max-height:190px; overflow-y:auto; }
  .mv { display:flex; gap:9px; font-size:12px; padding:3px 0; align-items:baseline; }
  .mv .n { color:var(--dim); min-width:22px; text-align:right; }
  .mv .side { min-width:14px; }
  .mv .txt { color:var(--fg); }
  .mv .san { color:var(--dim); margin-left:auto; font-size:11px; }
  .mv.last .txt { color:var(--accent); font-weight:700; }
  .piece { text-shadow:0 2px 3px rgba(0,0,0,.35); }
  .piece.w { color:#fff; -webkit-text-stroke:1.5px #23232a; }
  .piece.b { color:#15151a; -webkit-text-stroke:1.5px #000; }

  /* ---------- controls ---------- */
  .controls { display:flex; gap:9px; flex-wrap:wrap; margin-top:16px; align-items:center; }
  .btn { padding:11px 18px; font-weight:700; background:var(--panel); color:var(--fg);
    border:1px solid var(--line); }
  .btn:hover { border-color:var(--accent); }
  .btn.primary { background:var(--accent); color:#000; border-color:var(--accent); }
  .btn.danger { color:var(--red); }
  .btn:disabled { opacity:.35; cursor:not-allowed; }
  input[type=number], input[type=text] { background:#101013; border:1px solid var(--line);
    color:var(--fg); padding:10px 12px; border-radius:9px; width:120px; font:inherit; }
  .turnbar { display:flex; align-items:center; gap:10px; margin-top:14px; font-weight:700; }
  .turnbar .dot { width:9px; height:9px; border-radius:50%; background:var(--dim); }
  .turnbar .dot.on { background:var(--green); box-shadow:0 0 9px var(--green); }

  .log { margin-top:18px; background:var(--panel); border:1px solid var(--line); border-radius:12px;
    padding:12px 14px; max-height:170px; overflow-y:auto; }
  .log div { font-size:12px; color:var(--dim); padding:2px 0; }
  .log div:first-child { color:var(--fg); }

  .gate { max-width:380px; margin:12vh auto; background:var(--panel); border:1px solid var(--line);
    border-radius:18px; padding:26px; }
  .gate h1 { font-size:20px; letter-spacing:.2em; color:var(--accent); margin:0 0 6px; text-align:center; }
  .gate p { color:var(--dim); text-align:center; margin:0 0 18px; font-size:13px; }
  .gate input { width:100%; margin-bottom:10px; }
  .gate .btn { width:100%; }
  .err { color:var(--red); font-size:13px; margin-top:10px; text-align:center; }
  .note { color:var(--dim); font-size:12px; margin-top:14px; text-align:center; line-height:1.6; }
  .row { display:flex; gap:9px; align-items:center; flex-wrap:wrap; }
  .chatbox { background:var(--panel); border:1px solid var(--line); border-left:3px solid var(--accent);
    border-radius:12px; padding:13px 16px; margin-top:16px; }
  .chatbox b { display:block; color:var(--accent); font-size:12px; letter-spacing:.1em;
    text-transform:uppercase; margin-bottom:8px; }
  .chatbox div { color:var(--dim); font-size:13px; padding:2px 0; }
  .chatbox .tip { font-size:11px; opacity:.75; margin-top:6px; }
  code.say { background:#101013; border:1px solid var(--line); color:var(--fg);
    padding:3px 9px; border-radius:7px; font-family:ui-monospace,Consolas,monospace; font-size:12px; }

  /* ---------- chips ---------- */
  .stack { display:flex; align-items:flex-end; gap:5px; min-height:34px; margin:8px 0 4px; }
  .col { display:flex; flex-direction:column-reverse; }
  .chip { width:34px; height:11px; border-radius:50%; margin-top:-6px;
    border:1px solid rgba(0,0,0,.35);
    box-shadow:0 2px 3px rgba(0,0,0,.55), inset 0 -3px 4px rgba(0,0,0,.4),
               inset 0 3px 3px rgba(255,255,255,.32); }
  .chip.c1   { background:#e4e4e8; }
  .chip.c5   { background:#96453f; }
  .chip.c10  { background:#4a6784; }
  .chip.c25  { background:#43775a; }
  .chip.c100 { background:#22242c; box-shadow:0 1px 2px rgba(0,0,0,.6),
               inset 0 -2px 3px rgba(0,0,0,.5), inset 0 2px 2px rgba(255,255,255,.18); }
  .stack .amt { font-size:12px; color:var(--accent); font-weight:800; margin-left:7px;
    align-self:center; }
  .potchips { display:flex; justify-content:center; align-items:flex-end; gap:6px;
    margin:6px 0 10px; min-height:36px; }
  .potchips .chip { width:40px; height:13px; margin-top:-7px; }

  /* ---------- winning ---------- */
  @keyframes pulseWin { 0%,100% { box-shadow:0 0 0 2px rgba(255,255,255,.35); }
                        50% { box-shadow:0 0 22px 5px rgba(255,255,255,.6); } }
  .seat.winner { border-color:var(--accent); animation:pulseWin 1.3s ease-in-out infinite; }
  .seat.winner .who { color:var(--accent); }
  .banner { margin-top:16px; padding:15px 18px; border-radius:14px; text-align:center;
    background:linear-gradient(180deg,rgba(255,255,255,.18),rgba(255,255,255,.06));
    border:1px solid rgba(255,255,255,.45); }
  .banner .big { font-size:19px; font-weight:800; color:var(--accent); letter-spacing:.04em; }
  .banner .sub { color:var(--dim); font-size:13px; margin-top:4px; }
  .banner.lose { background:linear-gradient(180deg,rgba(210,86,75,.14),rgba(210,86,75,.04));
    border-color:rgba(210,86,75,.4); }
  .banner.lose .big { color:var(--red); }
  @keyframes fall { to { transform:translateY(105vh) rotate(720deg); opacity:0; } }
  .confetti { position:fixed; top:-12px; width:9px; height:14px; z-index:99;
    pointer-events:none; animation:fall linear forwards; }

  /* ---------- sound toggle ---------- */
  .snd { background:transparent; border:1px solid var(--line); color:var(--dim);
    padding:6px 11px; border-radius:9px; }
  .snd.on { color:var(--accent); border-color:rgba(255,255,255,.5); }
  .turnbar.urgent { color:var(--red); }

  /* the mark rides with the name in the header */
  .logo { display:inline-flex; align-items:center; gap:9px; }
  .logo img { display:block; }

  /* ---------- the lobby: rooms, not a menu of games ---------- */
  .rooms { display:grid; grid-template-columns:repeat(auto-fill,minmax(250px,1fr)); gap:12px; }
  .room { background:var(--panel); border:1px solid var(--line); border-radius:16px;
    padding:16px 18px; display:flex; flex-direction:column; gap:7px;
    transition:border-color .15s; }
  .room:hover { border-color:#34343c; }
  /* Shut means full or mid-hand. Dimmed rather than hidden: knowing a room is
     busy is worth more than a shorter list. */
  .room.shut { opacity:.5; }
  .room-top { display:flex; align-items:baseline; justify-content:space-between; gap:10px; }
  .room-top b { font-size:15px; font-weight:600; }
  .seatcount { font:12px/1 ui-monospace,Consolas,monospace; color:var(--dim);
    border:1px solid var(--line); border-radius:999px; padding:5px 9px; flex:none; }
  .room-who { font-size:13px; color:var(--fg); min-height:20px; }
  .room.shut .room-who, .room .room-who:empty { color:var(--dim); }
  .room-meta { font-size:12px; color:var(--dim); }
  .room .say { align-self:flex-start; margin-top:4px; font-size:12px; }