:root{--bg: #0f1226;--panel: #1a1f3a;--ink: #e8eaff;--muted: #9aa3c7;--line: #0b0e1f;--accent: #ffd166;color-scheme:dark}*{box-sizing:border-box}body{margin:0;min-height:100vh;min-height:100dvh;display:grid;grid-template-columns:minmax(0,1fr);align-content:safe center;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:radial-gradient(1200px 800px at 50% -10%,#232a52,var(--bg));color:var(--ink);padding:clamp(8px,3vw,24px);padding-top:max(clamp(8px,3vw,24px),env(safe-area-inset-top,0px));padding-bottom:max(clamp(8px,3vw,24px),env(safe-area-inset-bottom,0px));-webkit-tap-highlight-color:transparent}.game{width:min(100%,560px,max(320px,calc(100dvh - 366px)));margin-inline:auto;background:var(--panel);border:1px solid #2a3162;border-radius:18px;padding:clamp(14px,4vw,22px);box-shadow:0 20px 60px #00000073}.board,button{touch-action:manipulation}.hud{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:16px}.hud h1{margin:0;font-size:clamp(20px,6vw,26px);letter-spacing:.5px}.stats{display:flex;gap:clamp(12px,4vw,18px)}.stat{display:flex;flex-direction:column;align-items:flex-end}.stat .label{font-size:11px;text-transform:uppercase;letter-spacing:1px;color:var(--muted)}.stat .value{font-size:22px;font-weight:700;font-variant-numeric:tabular-nums}#score{color:var(--accent)}.board{display:grid;grid-auto-rows:1fr;aspect-ratio:1;background:var(--line);border:3px solid var(--line);border-radius:10px;overflow:hidden;-webkit-user-select:none;user-select:none}.cell{display:grid;place-items:center;font-size:clamp(16px,4.4vw,26px);line-height:1;cursor:pointer;border:1px solid rgba(0,0,0,.18);transition:filter .08s ease}@media (hover: hover){.cell:hover{filter:brightness(1.12)}}.cell.bt{border-top:3px solid var(--line)}.cell.bb{border-bottom:3px solid var(--line)}.cell.bl{border-left:3px solid var(--line)}.cell.br{border-right:3px solid var(--line)}.region-0{background:#6c8cff}.region-1{background:#5fd0a8}.region-2{background:#f6a35c}.region-3{background:#e57ab0}.region-4{background:#b794f4}.region-5{background:#e7d34a}.region-6{background:#7fd1e8}.region-7{background:#f28b82}.region-8{background:#a3c46b}.region-9{background:#c98bdb}.region-10{background:#f0b6c2}.cell.blocked{cursor:not-allowed;color:#0f122673;filter:brightness(.78) saturate(.7)}.cell.blocked:hover{filter:brightness(.78) saturate(.7)}.cell.leader{color:#14172e;text-shadow:0 1px 0 rgba(255,255,255,.4);filter:brightness(1.18)}.cell.solution{color:#14172e;outline:3px solid #fff;outline-offset:-6px}.selectors{display:flex;gap:10px;margin-bottom:14px;flex-wrap:wrap}.segmented{display:inline-flex;background:#20264a;border:1px solid #313a6e;border-radius:10px;padding:3px;gap:3px}.segmented button{flex:none;padding:7px 12px;border:0;border-radius:7px;background:transparent;color:var(--muted);font-size:12.5px;font-weight:600;cursor:pointer}.segmented button.active{background:#3a4794;color:var(--ink)}@media (hover: hover){.segmented button:hover:not(.active){color:var(--ink)}}.status-line{margin-top:12px;line-height:1.35;min-height:2.7em;display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--muted);text-align:center}.status-line.warn{color:#ffb4b4;font-weight:600}.controls{display:flex;gap:10px;margin-top:10px;flex-wrap:wrap}.controls .primary{background:#3a4794;border-color:#4a59b4}@media (hover: hover){.controls .primary:hover{background:#4555ad}}button{flex:1;padding:11px 14px;border-radius:10px;border:1px solid #3a4178;background:#262d57;color:var(--ink);font-size:14px;font-weight:600;cursor:pointer;transition:background .12s ease}@media (hover: hover){button:hover{background:#313a6e}}button:disabled{opacity:.45;cursor:default}.rules{margin:16px 2px 0;font-size:12.5px;line-height:1.55;color:var(--muted)}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:40;display:grid;place-items:center;padding:20px;background:#080a169e;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);animation:modal-fade .18s ease both}.modal{position:relative;width:min(100%,360px);background:var(--panel);border:1px solid #2a3162;border-radius:18px;padding:28px 24px 22px;text-align:center;box-shadow:0 24px 70px #0000008c;animation:modal-pop .22s cubic-bezier(.2,.9,.3,1.2) both}.modal.win{border-top:4px solid #5fd0a8}.modal.lose{border-top:4px solid #e57a7a}.modal-close{position:absolute;top:8px;right:8px;flex:none;width:34px;height:34px;padding:0;line-height:1;font-size:22px;border:0;border-radius:8px;background:transparent;color:var(--muted)}.modal-icon{font-size:46px;line-height:1}.modal.win .modal-icon{color:var(--accent)}.modal.lose .modal-icon{color:#e57a7a}.modal-title{margin:8px 0 6px;font-size:24px;font-weight:800}.modal-sub{margin:0 0 18px;color:var(--muted);font-size:14.5px}.modal-sub strong{color:var(--ink)}.modal-actions{display:flex;gap:10px}@keyframes modal-fade{0%{opacity:0}to{opacity:1}}@keyframes modal-pop{0%{opacity:0;transform:translateY(8px) scale(.96)}to{opacity:1;transform:none}}@media (prefers-reduced-motion: reduce){.modal-backdrop,.modal{animation:none}}@media (max-width: 480px){body{padding:6px}.game{padding:12px;border-radius:14px}.hud{margin-bottom:12px}.selectors{margin-bottom:10px;gap:8px}.rules{font-size:11.5px;margin-top:12px}.segmented button{padding:9px 12px}.controls button{padding:13px 14px}}