:root{
  --bg:#f6f4ef; --panel:#ffffff; --ink:#26221c; --dim:#8a8375; --line:#e5e0d5;
  --accent:#e8613c; --accent2:#2f6f4f; --gold:#c9a227;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 -apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
.wrap{max-width:980px;margin:0 auto;padding:0 16px}
.site-header{border-bottom:1px solid var(--line);background:var(--panel)}
.site-header .wrap{display:flex;justify-content:space-between;align-items:center;height:56px}
.logo{font-weight:800;font-size:20px}.logo span{color:var(--accent)}
nav a{color:inherit;text-decoration:none;font-size:14px}
h1{font-size:28px;margin:12px 0 4px}.tagline{font-weight:400;color:var(--dim);font-size:20px}
.sub{margin:0 0 14px;color:#55503f}
.dim{color:var(--dim)} .small{font-size:13px}
.hidden{display:none !important}
kbd{background:#eee8db;border:1px solid var(--line);border-radius:4px;padding:0 5px;font-size:12px}

.game-panel{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(240px,1fr);gap:20px;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:18px}
@media(max-width:760px){.game-panel{grid-template-columns:1fr}}

/* Controls row spans both columns; board and tray then sit side by side, tops aligned. */
.controls{grid-column:1 / -1;display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:2px}
.board-side{min-width:0}
.date-label{font-size:13px;color:var(--dim);display:flex;gap:6px;align-items:center}
.btn{border:1px solid var(--line);background:#faf8f2;color:var(--ink);border-radius:8px;padding:7px 12px;font-size:14px;cursor:pointer}
.btn:hover{background:#f0ecdf}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.ghost{background:transparent}
.timer{margin-left:auto;font-variant-numeric:tabular-nums;font-weight:700;font-size:20px;color:var(--accent2)}

/* Board shrinks to fit the viewport height too, so board + tray stay on one screen.
   Budget ~300px above/below the board (header, hero, controls, panel padding). */
.board{display:grid;grid-template-columns:repeat(7,1fr);gap:4px;user-select:none;touch-action:manipulation;margin:0 auto;max-width:min(100%,max(320px,calc((100vh - 300px) * 7 / 8)));max-width:min(100%,max(320px,calc((100dvh - 300px) * 7 / 8)))}
.tray-side{align-self:start}
.cell{aspect-ratio:1;border-radius:7px;background:#efe9dc;border:1px solid #e2dccb;display:flex;align-items:center;justify-content:center;font-size:clamp(9px,2vw,14px);font-weight:600;color:#7a7360;cursor:pointer;position:relative}
.cell.void{background:transparent;border:none;cursor:default}
.cell.target{background:#ffe9b8;border-color:var(--gold);color:#8a6d0b;box-shadow:inset 0 0 0 2px var(--gold)}
.cell.covered{cursor:pointer}
.cell.selected-ghost{outline:2px dashed var(--accent);outline-offset:-2px}
.cell.ghost-ok{background:rgba(232,97,60,.42);border-color:var(--accent);outline:2px dashed var(--accent);outline-offset:-2px}
.cell.ghost-bad{background:rgba(209,73,91,.25);outline:2px dashed #d1495b;outline-offset:-2px}
.cell.flash{animation:shake .3s}
@keyframes shake{25%{transform:translateX(-2px)}75%{transform:translateX(2px)}}

.tray-title{margin:0 0 8px;font-size:16px}
.tray{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}
.piece{aspect-ratio:1;background:#faf8f2;border:2px solid var(--line);border-radius:10px;display:flex;align-items:center;justify-content:center;cursor:pointer}
.piece.selected{border-color:var(--accent);background:#fff4ef}
.piece.used{opacity:.18;pointer-events:none}
.mini{display:grid;gap:1px}
.mini i{display:block;border-radius:1px}

/* Variant strip: all orientations of the selected piece, click to switch.
   Fixed 44x44 boxes, shape centered — uniform size, 8 per row (5-wide I fits exactly). */
.variants{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px;padding-top:12px;border-top:1px dashed var(--line)}
.variant{width:44px;height:44px;border:2px solid var(--line);border-radius:8px;background:#faf8f2;cursor:pointer;display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.variant:hover{border-color:#b9b19d}
.variant.cur{border-color:var(--accent);background:#fff4ef}
.variant .mini{gap:0}

.win-box{margin-top:14px;border:2px solid var(--accent2);border-radius:12px;padding:12px;background:#f2f8f4}
.win-box h3{margin:0 0 6px}
.win-box input{width:100%;padding:8px;border:1px solid var(--line);border-radius:8px;margin:8px 0}
.score-form{margin-top:8px}

.lb-panel{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:18px;margin-top:20px}
.lb-meta{margin-bottom:8px}
.leaderboard{margin:0;padding-left:0;list-style:none}
.leaderboard li{display:flex;gap:10px;padding:7px 4px;border-bottom:1px dashed var(--line);font-size:15px}
.leaderboard li:last-child{border-bottom:none}
.leaderboard .rank{width:28px;font-weight:700;color:var(--gold)}
.leaderboard .name{flex:1;font-weight:600}
.leaderboard .time{font-variant-numeric:tabular-nums;font-weight:700;color:var(--accent2)}

.seo-text{margin:26px 0 40px;color:#4a463b}
.seo-text h2{font-size:20px}.seo-text h3{font-size:16px}
.site-footer{border-top:1px solid var(--line);padding:16px 0;margin-top:10px}
.board-hint{font-size:13px;color:var(--dim);margin:10px 0 0}