.board{--cell-size: 38px;display:inline-flex;flex-direction:column;gap:2px;padding:4px 3px 3px;background:var(--border);border-radius:8px;box-shadow:0 8px 32px #0006}.board-row{display:flex;gap:2px}.board-cell{width:var(--cell-size);height:var(--cell-size);position:relative;background:var(--cell-empty);border-radius:4px;transform:translate(1px,1px);transition:all .15s cubic-bezier(.4,0,.2,1)}.board-cell.box-0-1,.board-cell.box-1-0,.board-cell.box-1-2,.board-cell.box-2-1{background:#1f1f1f}.board-cell.filled{background:var(--accent);box-shadow:inset 0 0 8px #0000004d}.board-cell.highlighted{background:var(--accent-dim);box-shadow:inset 0 0 0 2px var(--highlight)}.board-cell.will-clear{background:#ff1b6e33;box-shadow:inset 0 0 0 2px #ff80b4a6}.board-cell.box-0-0,.board-cell.box-0-1,.board-cell.box-1-0,.board-cell.box-1-1{border-right:1px solid 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scale(.9);opacity:0}}.replay-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1400;display:flex;align-items:center;justify-content:center;padding:24px;background:#05050fd1;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.replay-panel{width:min(90vw,960px);max-height:90vh;padding:32px;background:var(--bg-card);border-radius:20px;box-shadow:0 24px 80px #0000008c;display:flex;flex-direction:column;gap:20px;overflow-y:auto}.replay-header{display:flex;justify-content:space-between;align-items:flex-start}.replay-subtitle{margin:0;font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--text-secondary)}.replay-header h3{margin:4px 0 0;font-size:32px;letter-spacing:-.02em}.replay-close{width:40px;height:40px;border-radius:50%;background:var(--bg-dark);border:1px solid var(--border);font-size:24px;line-height:1;transition:background-color .2s ease,transform .2s 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h2{font-size:36px;font-weight:700;margin-bottom:24px}.game-over-message{margin:-8px 0 16px;color:var(--text-secondary)}.final-score{display:flex;flex-direction:column;gap:8px;margin-bottom:24px}.final-score-label{font-size:14px;text-transform:uppercase;letter-spacing:.05em;color:var(--text-secondary)}.final-score-value{font-size:56px;font-weight:700;line-height:1;color:var(--accent)}.new-high-score{font-size:16px;font-weight:600;margin-bottom:24px;color:var(--accent);animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.6}}.restart-button{width:100%;padding:16px 32px;font-size:16px;font-weight:600;color:#fff;background:var(--accent);border-radius:8px;transition:background-color .2s ease,transform .2s ease,box-shadow .2s ease}.restart-button:hover{background:#e01560;transform:scale(1.02);box-shadow:0 8px 24px #ff1b6e66}.restart-button:active{transform:translateY(0)}.restart-button.secondary{margin-top:12px;background:transparent;color:var(--accent);border:1px solid var(--accent);box-shadow:none}.restart-button.secondary:hover{background:#ff3b6c1f;color:#fff;transform:scale(1.01)}@media (max-width: 500px){.game{padding:20px 12px 32px}.game-header{column-gap:10px;row-gap:8px}.game-title{gap:8px;justify-content:flex-start}.game-title h1{font-size:36px}.game-actions{display:flex;gap:10px;justify-content:flex-start}.sound-toggle{width:36px;height:36px;font-size:18px}.stat-value{font-size:26px}.game-board{width:100%;display:flex;justify-content:center;padding-bottom:0}.game-over-modal{padding:32px 28px;width:calc(100% - 48px)}.game-over-modal h2{font-size:28px}.final-score-value{font-size:42px}.restart-button{padding:14px}}.solver{display:flex;flex-direction:column;align-items:center;min-height:100vh;padding:16px}.solver-header{width:100%;max-width:900px;display:grid;grid-template-columns:1fr 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.board{transform:none}.solver-controls{padding:20px;max-width:100%}.control-buttons{flex-direction:column}.control-buttons button{width:100%}}:root{--bg-dark: #0e0e0e;--bg-card: #161616;--bg-board: #1c1c1f;--accent: #ff1b6e;--accent-soft: #fe9ac4;--accent-dim: #ff1b6e40;--accent-dimmer: rgba(255, 27, 110, .159);--text-primary: #ededf2;--text-secondary: #9a9aa3;--border: #363636;--cell-empty: #252525;--cell-filled: #383838;--highlight: #ff1b6e}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe 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18px;font-size:13px;letter-spacing:.04em}.logo-icon{width:38px;height:38px}}