:root{--bg: #0b1020;--surface: #141a33;--text: #e8ecff;--muted: #8890b8;--accent: #22c2ff;--c1: #ef4667;--c2: #22c2ff;--c3: #ffd166;--c4: #5cf083;--c5: #b57bff;--c6: #ff8a3d;--tile-radius: 10%;--gap: 2px}*{box-sizing:border-box}html,body{margin:0;padding:0;height:100%}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;font-feature-settings:"tnum";-webkit-tap-highlight-color:transparent;overscroll-behavior:none;user-select:none;-webkit-user-select:none;touch-action:manipulation}#app{min-height:100dvh;display:flex;flex-direction:column;padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left)}header.topbar{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:12px 16px;gap:8px}.brand{font-weight:700;letter-spacing:.08em;text-transform:uppercase;font-size:14px;color:var(--muted)}.mode-pill{display:inline-flex;gap:4px;background:var(--surface);padding:4px;border-radius:999px}.mode-pill button{background:transparent;color:var(--muted);border:0;padding:6px 14px;border-radius:999px;font-weight:600;font-size:13px;cursor:pointer}.mode-pill button.active{background:var(--text);color:var(--bg)}.icon-buttons{display:flex;gap:6px;justify-self:end}.menu-btn{background:var(--surface);color:var(--text);border:0;width:36px;height:36px;border-radius:10px;font-size:18px;cursor:pointer}.stats{display:flex;justify-content:space-around;padding:8px 16px 16px}.stat{display:flex;flex-direction:column;align-items:center}.stat .label{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.1em}.stat .value{font-size:26px;font-weight:700;font-variant-numeric:tabular-nums}main.board-wrap{flex:1;display:flex;align-items:center;justify-content:center;padding:8px 12px}.board{display:grid;width:min(100vw - 24px,60vh,480px);aspect-ratio:var(--cols) / var(--rows);grid-template-columns:repeat(var(--cols),1fr);grid-template-rows:repeat(var(--rows),1fr);gap:var(--gap);background:var(--surface);padding:var(--gap);border-radius:14px;box-shadow:0 20px 60px -20px #0009}.tile{border-radius:var(--tile-radius);background:var(--bg);transition:transform .18s cubic-bezier(.2,.9,.3,1.4),opacity .18s ease;position:relative}.tile[data-c="0"]{background:transparent}.tile[data-c="1"]{background:var(--c1)}.tile[data-c="2"]{background:var(--c2)}.tile[data-c="3"]{background:var(--c3)}.tile[data-c="4"]{background:var(--c4)}.tile[data-c="5"]{background:var(--c5)}.tile[data-c="6"]{background:var(--c6)}.tile.hint{box-shadow:inset 0 0 0 3px #ffffff59}.tile.pop{transform:scale(0);opacity:0}.powerup-bar{display:flex;justify-content:center;gap:10px;padding:12px 16px 20px}.powerup{position:relative;background:var(--surface);color:var(--text);border:0;padding:10px 16px;border-radius:12px;font-size:20px;min-width:60px;cursor:pointer;transition:transform .12s ease,background .12s ease}.powerup:disabled{opacity:.35;cursor:default}.powerup.armed{background:var(--accent);color:var(--bg);transform:scale(1.05)}.powerup .count{position:absolute;top:-6px;right:-6px;background:var(--c1);color:#fff;font-size:11px;font-weight:700;border-radius:999px;padding:2px 6px;min-width:18px;text-align:center}.toast{position:fixed;left:50%;top:30%;transform:translate(-50%,-50%) scale(.9);background:var(--text);color:var(--bg);padding:10px 18px;border-radius:999px;font-weight:700;pointer-events:none;opacity:0;transition:opacity .22s ease,transform .22s ease;z-index:10}.toast.show{opacity:1;transform:translate(-50%,-50%) scale(1)}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:flex;align-items:center;justify-content:center;padding:24px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:20}.modal{background:var(--surface);border-radius:18px;padding:24px;max-width:420px;width:100%}.modal h2{margin:0 0 8px;font-size:22px}.modal p{color:var(--muted);margin:4px 0 16px;line-height:1.5}.modal .score-big{font-size:48px;font-weight:800;text-align:center;margin:12px 0}.modal .actions{display:flex;gap:8px;margin-top:16px}.modal button{flex:1;background:var(--text);color:var(--bg);border:0;padding:14px;border-radius:12px;font-weight:700;font-size:15px;cursor:pointer}.modal button.ghost{background:transparent;color:var(--text);box-shadow:inset 0 0 0 1px var(--muted)}.theme-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:12px}.theme-card{background:var(--bg);border-radius:12px;padding:12px;cursor:pointer;border:2px solid transparent}.theme-card.active{border-color:var(--accent)}.theme-card.locked{opacity:.4;cursor:not-allowed}.theme-card .swatches{display:flex;gap:4px;margin-bottom:8px}.swatch{width:16px;height:16px;border-radius:4px}.theme-card .name{font-weight:700;font-size:13px}.theme-card .hint{font-size:11px;color:var(--muted)}.name-row{display:flex;flex-direction:column;gap:6px;margin:8px 0 4px}.name-row span{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}.name-row input{background:var(--bg);color:var(--text);border:1px solid var(--surface);padding:12px 14px;font-size:16px;border-radius:10px;font-family:inherit;min-width:0}.name-row input:focus{outline:none;border-color:var(--accent)}.name-edit{display:grid;grid-template-columns:1fr auto;gap:8px}.shuffle-btn{background:var(--bg);color:var(--text);border:1px solid var(--surface);font-size:20px;border-radius:10px;width:48px;cursor:pointer;transition:transform .2s ease,border-color .12s ease}.shuffle-btn:hover{border-color:var(--accent)}.shuffle-btn:active{transform:rotate(180deg)}.section-title{margin:18px 0 4px;font-size:16px;font-weight:700}.subtle{font-size:12px;color:var(--muted);margin:0 0 10px}.leader-hint a{color:var(--accent);text-decoration:none;font-weight:600}.leader-hint a:hover{text-decoration:underline}.period-tabs{display:flex;gap:4px;background:var(--bg);padding:4px;border-radius:999px;margin:12px auto 8px;width:fit-content}.period-tabs button{background:transparent;color:var(--muted);border:0;padding:10px 22px;border-radius:999px;font-weight:700;font-size:14px;cursor:pointer;transition:background .12s ease,color .12s ease}.period-tabs button.active{background:var(--accent);color:var(--bg);box-shadow:0 2px 12px -2px var(--accent)}.period-meta{display:flex;justify-content:space-between;align-items:baseline;padding:0 4px 10px;font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}.period-range{font-weight:700;letter-spacing:.04em;text-transform:uppercase}.period-countdown{opacity:.85}.leader-hint{text-align:center;padding:24px 0;color:var(--muted)}.leader-list{list-style:none;margin:8px 0;padding:0;max-height:50vh;overflow-y:auto}.leader-list li{display:grid;grid-template-columns:36px 1fr auto auto;align-items:center;gap:12px;padding:10px 12px;border-radius:10px;font-variant-numeric:tabular-nums}.leader-list .time{color:var(--muted);font-size:12px;font-weight:600}.leader-list li:nth-child(odd){background:#ffffff08}.leader-list li.me{background:#22c2ff26;box-shadow:inset 0 0 0 1px var(--accent)}.leader-list .rank{color:var(--muted);font-size:13px;font-weight:700;text-align:right}.leader-list li:nth-child(1) .rank{color:#ffd166}.leader-list li:nth-child(2) .rank{color:#c8d0ff}.leader-list li:nth-child(3) .rank{color:#ff8a3d}.leader-list .name{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.leader-list .score{font-weight:700;font-size:15px}