/*! tetra — styles.css © 2026 2bworks. All rights reserved. https://2bworks.games */
:root{--bg: #0a0a0a;--board-panel: #242424;--card: #000000;--outline: rgba(255, 255, 255, .92);--square: #2f2f2f;--grid: rgba(0, 0, 0, .35);--op: #efbc4a;--player: #5cc8f7;--tile: #4ed35e;--accent: #ab8dfa;--bad: #ff5722;--light: #e3e3e3;--primary-text: #0a0a0a;--text: #ffffff;--muted: #9b9b9b}body.light{--bg: #f1f1f4;--board-panel: #dededf;--card: #ffffff;--outline: rgba(0, 0, 0, .88);--square: #c9c9cf;--grid: rgba(0, 0, 0, .18);--light: #14141a;--primary-text: #f4f4f6;--text: #101014;--muted: #5c5c66}*{box-sizing:border-box}html,body{margin:0;height:100%;overflow:hidden;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,system-ui,sans-serif;-webkit-tap-highlight-color:transparent}.app{max-width:460px;height:100vh;height:100dvh;transition:max-width .2s ease;margin:0 auto;padding:max(10px,env(safe-area-inset-top)) 12px calc(12px + env(safe-area-inset-bottom));display:flex;flex-direction:column;gap:12px}.app.wide{max-width:620px}.bar{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap}.tools{display:flex;gap:6px;flex-wrap:wrap;justify-content:flex-end;margin-left:auto}[hidden]{display:none}select{background:var(--card);color:var(--text);border:2px solid var(--outline);border-radius:999px;padding:8px 14px;font-size:15px;font-weight:700}.clock{font-size:20px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--text)}.viewport{position:relative;flex:1 1 auto;min-height:0;overflow:hidden;border-radius:26px;background:var(--board-panel);touch-action:none;overscroll-behavior:contain;cursor:crosshair}.viewport.panning{cursor:grabbing}.stage{position:absolute;top:0;left:0;transform-origin:0 0;will-change:transform}.stage.animating{transition:transform .22s ease}.board{display:grid;grid-template-columns:repeat(var(--cols, 5),var(--cell));padding:var(--pad)}.cell{width:var(--cell);height:var(--cell);display:grid;place-items:center;background:var(--square);box-shadow:inset 0 0 0 1px var(--grid);font-size:19px;font-weight:700;font-variant-numeric:tabular-nums;line-height:1;user-select:none}.cell.clue{background:var(--op);color:#10100e}.cell.len2{font-size:16px}.cell.len3{font-size:12px}.cell.shake{animation:shake .3s}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-4px)}75%{transform:translate(4px)}}.rects{position:absolute;top:var(--pad);left:var(--pad);pointer-events:none}.rect{position:absolute;border-radius:8px;background:#5cc8f72b;box-shadow:inset 0 0 0 3px var(--player)}.rect.bad{background:#ff57222b;box-shadow:inset 0 0 0 3px var(--bad)}.rect.right{box-shadow:inset 0 0 0 3px var(--tile)}.rect.wrong{box-shadow:inset 0 0 0 3px var(--bad)}.rect.preview{background:#ab8dfa38;box-shadow:inset 0 0 0 3px var(--accent)}.rect.cursor{background:none;box-shadow:inset 0 0 0 3px var(--accent);border-radius:6px}.btn{background:var(--card);color:var(--text);border:2px solid var(--outline);border-radius:999px;padding:16px 20px;font-size:17px;font-weight:700;cursor:pointer}.btn.mini{padding:5px 9px;font-size:12px;border-width:1px}.btn:active{transform:scale(.97)}.btn.primary{background:var(--light);border-color:var(--light);color:var(--primary-text)}.btn.hidden{display:none}.overlay{position:fixed;inset:0;background:#000000b8;display:grid;place-items:center;padding:20px}.overlay.hidden{display:none}.panel{background:var(--card);border-radius:22px;border:2px solid var(--outline);padding:26px 22px;text-align:center;max-width:320px;width:100%}.panel h2{margin:0 0 8px;font-size:28px;font-weight:800}.panel p{margin:0 0 18px;color:var(--muted);font-size:15px;line-height:1.5}.panel .btn{width:100%}.panel .btn+.btn{margin-top:10px}