:root{color-scheme:dark;font-family:system-ui,-apple-system,"Segoe UI",sans-serif;color:#ebf3ed;background:#15242b;--cell:38px;--gap:3px;--mini:16px}*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 30% 40%,#304748,#15242b 75%);height:100dvh}button{font:inherit;cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:transparent;color:#e8f2e7;background:#2c4349;border:1px solid #577377;border-radius:8px;min-height:38px}button:hover{background:#3b555a}button:focus-visible,#board:focus-visible{outline:3px solid #d3eaae;outline-offset:4px}[hidden]{display:none!important}.app{max-width:1060px;margin:auto;height:100dvh;padding:22px;display:flex;flex-direction:column;gap:20px}header{display:flex;justify-content:space-between;align-items:center;gap:15px;flex-shrink:0}header button{padding:0 18px;font-size:12px}h1{font-size:31px;margin:0;line-height:1.1;letter-spacing:-.035em}.eyebrow{font-size:9px;letter-spacing:.17em;font-weight:750;color:#a5bdb1;margin:0 0 6px}.workspace{flex:1;min-height:0;display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:30px}.board-area{display:flex;align-items:center;justify-content:center;min-height:0;min-width:0;border:1px solid #4b6565;border-radius:18px;background:#192f3580;padding:16px}#board{display:grid;grid-template-columns:repeat(10,var(--cell));gap:var(--gap);padding:9px;background:#13242c;border:1px solid #456164;border-radius:11px;box-shadow:0 12px 30px #0004;touch-action:none}.cell{width:var(--cell);height:var(--cell);border:none;padding:0;min-height:0;border-radius:4px;background:#294048;box-shadow:inset 0 1px 0 #adc1b315;position:relative;touch-action:none}.cell:hover{background:#34545b}.cell.filled,.block{background:linear-gradient(140deg,var(--tone,#9ac7ab),var(--shade,#659d86));border:1px solid #ffffff50;box-shadow:inset 0 -3px 0 #0002,inset 0 1px 0 #ffffff20;border-radius:4px}.single{--tone:#decf9c;--shade:#b59f66}.line{--tone:#9ecbbb;--shade:#679d8c}.sq2{--tone:#cab2cc;--shade:#967b9f}.sq3{--tone:#e9bd94;--shade:#b38464}.l2{--tone:#b6c9e2;--shade:#7d9db6}.l3{--tone:#d1bb8f;--shade:#9f875d}.tetro-t,.tetro-l,.tetro-j{--tone:#a5c9c3;--shade:#6b9d9b}.tetro-s,.tetro-z,.rect-23{--tone:#c1c98c;--shade:#929d61}.cell.preview:after{content:"";position:absolute;inset:1px;background:#bcdc9e80;border:2px solid #d5edba;border-radius:4px}.cell.preview.invalid:after{background:#df887850;border-color:#e6a494}.cell.cursor{outline:2px solid #d3eaae;outline-offset:-3px}.cell.clearing{animation:line-clear .5s ease-out}@keyframes line-clear{0%{background:#daf2aa;transform:scale(.94)}100%{background:#294048;transform:scale(1)}}
.panel{align-self:center;display:flex;flex-direction:column;gap:18px}.stats{display:flex;justify-content:space-between;gap:14px;border-block:1px solid #4c6364;padding:14px 0;min-width:0}.stats>div{min-width:0}.stats span{display:block;color:#a7c1b5;font-size:9px;font-weight:650;letter-spacing:.1em}.stats strong{font-size:27px;display:block;margin-top:5px;font-variant-numeric:tabular-nums;white-space:nowrap}#status{margin:0;height:42px;min-height:42px;line-height:1.45;font-size:13px;color:#d3e4d0}#tray{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}.piece{min-height:111px;position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:12px 4px 22px;touch-action:none;background:#20363e}.piece:disabled{opacity:.28;cursor:default}.piece.selected{border-color:#d3eaae;background:#3a514c}.piece .number{position:absolute;bottom:5px;font-size:10px;color:#b1c5b6}.mini-grid{display:grid;gap:2px;pointer-events:none}.mini-grid>span{width:var(--mini);height:var(--mini);pointer-events:none}.mini-grid .empty{visibility:hidden}.mini-grid .block{border-radius:3px;box-shadow:inset 0 -2px 0 #0002}.rules{margin:0;font-size:12px;line-height:1.7;color:#abc2b8}.rules strong{color:#e0edd3;font-size:14px}.keyboard{font-size:10px;line-height:1.65;color:#98b6aa;margin:0}kbd{font:inherit;color:#deedc7;font-weight:750}#storage-note{font-size:9px;color:#92aca0;margin:0}.credits{font-size:9px;color:#7f9d94;line-height:1.5;margin:0}.credits a{color:#b2cbb8}#ghost{position:fixed;left:0;top:0;pointer-events:none;z-index:5;opacity:.85;filter:drop-shadow(0 5px 5px #0007)}#ghost .mini-grid>span{width:var(--cell);height:var(--cell)}#ghost .mini-grid{gap:var(--gap)}#game-over{position:fixed;inset:0;z-index:10;display:grid;place-items:center;background:#0d1b25c9;padding:20px}.end-card{text-align:center;max-width:340px;background:#2a4145;padding:30px;border:1px solid #718b77;border-radius:18px;box-shadow:0 12px 35px #0005}.end-card h2{font-size:28px;margin:10px 0 16px}.end-card p{font-size:13px;color:#c3d6c2;line-height:1.6}.end-card button{padding:10px 25px;background:#c5dca0;color:#20372d;border:1px solid #e0efc1;font-weight:750;margin-top:12px}
@media(max-width:620px) and (min-height:500px){.app{padding:12px;gap:12px}h1{font-size:25px}.eyebrow{font-size:7px;letter-spacing:.1em}.workspace{grid-template-columns:1fr;grid-template-rows:minmax(200px,1fr) auto;gap:12px}.board-area{padding:7px;border-radius:12px}.panel{display:grid;grid-template-columns:1fr;gap:6px;align-self:stretch}.stats{padding:6px 0}.stats strong{font-size:22px}.stats span{font-size:8px}#status{font-size:11px;height:34px;min-height:34px}#tray{gap:7px}.piece{min-height:77px;padding-top:8px;padding-bottom:21px}.rules{font-size:10px;line-height:1.4}.rules strong{display:none}.keyboard{display:none}.credits,#storage-note{font-size:8px;line-height:1.3}}
@media(max-height:560px) and (min-width:621px){.app{padding:12px;gap:10px}h1{font-size:24px}.eyebrow{font-size:7px}.workspace{grid-template-columns:minmax(0,1fr) 290px;gap:14px}.board-area{padding:8px}.panel{gap:9px}.stats{padding:7px 0}.stats strong{font-size:22px}.stats span{font-size:8px}#status{font-size:11px;height:32px;min-height:32px}.piece{min-height:78px;padding-top:7px;padding-bottom:18px;--mini:12px}.rules{font-size:10px;line-height:1.45}.rules strong{display:none}.keyboard{display:none}.credits,#storage-note{font-size:8px}}
@media(prefers-reduced-motion:reduce){.cell.clearing{animation:none}}