:root{color-scheme:dark;font-family:SF Pro Display,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5;--glass-bg: rgba(255, 255, 255, .04);--glass-border: rgba(255, 255, 255, .08);--glass-hover: rgba(255, 255, 255, .08);--accent: #6366f1;--accent-glow: rgba(99, 102, 241, .3);--text-primary: rgba(255, 255, 255, .92);--text-secondary: rgba(255, 255, 255, .5);--text-dim: rgba(255, 255, 255, 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8px;border-radius:3px;text-transform:uppercase}.solved-badge{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:28px;font-weight:700;letter-spacing:.3em;color:#10b981;text-shadow:0 0 30px rgba(16,185,129,.5);animation:solvedPulse .6s ease-out;pointer-events:none}@keyframes solvedPulse{0%{transform:translate(-50%,-50%) scale(.5);opacity:0}50%{transform:translate(-50%,-50%) scale(1.1)}to{transform:translate(-50%,-50%) scale(1);opacity:1}}.move-history{position:absolute;top:60px;right:24px;background:var(--glass-bg);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--glass-border);border-radius:12px;padding:14px 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14px}.face-group-label{font-size:9px;letter-spacing:.2em;color:var(--text-dim);margin-bottom:10px;text-align:center}.face-buttons{display:flex;flex-direction:column;gap:6px}.face-btn-group{display:flex;gap:4px}.face-btn,.face-btn-inv{border:1px solid var(--glass-border);background:var(--glass-bg);color:var(--text-primary);cursor:pointer;transition:all .15s ease;font-family:SF Mono,ui-monospace,monospace;display:flex;align-items:center;justify-content:center}.face-btn{width:42px;height:42px;border-radius:10px;font-size:16px;font-weight:700}.face-btn:hover{background:var(--glass-hover);border-color:var(--accent);box-shadow:0 0 12px var(--accent-glow)}.face-btn:active{transform:scale(.95)}.face-btn-inv{width:42px;height:42px;border-radius:10px;font-size:12px;font-weight:500;opacity:.6}.face-btn-inv:hover{opacity:1;background:var(--glass-hover)}.face-btn:disabled,.face-btn-inv:disabled{opacity:.3;cursor:not-allowed}.face-letter{font-size:16px}.action-buttons{position:absolute;bottom:24px;left:50%;transform:translate(-50%);display:flex;gap:10px}.btn-action{padding:10px 28px;border:1px solid var(--glass-border);background:var(--glass-bg);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);color:var(--text-primary);font-size:11px;font-weight:600;letter-spacing:.15em;border-radius:10px;cursor:pointer;transition:all .2s ease;font-family:inherit}.btn-action:hover{background:var(--glass-hover);border-color:var(--accent);box-shadow:0 0 16px var(--accent-glow)}.btn-action:active{transform:scale(.97)}.btn-action:disabled{opacity:.4;cursor:not-allowed}.btn-scramble{border-color:#6366f14d}.btn-reset{border-color:#ef444433}.btn-reset:hover{border-color:#ef4444;box-shadow:0 0 16px #ef444433}.keyboard-hint{position:absolute;bottom:24px;right:24px;font-size:9px;letter-spacing:.12em;color:var(--text-dim);display:flex;gap:8px;align-items:center}.hint-sep{opacity:.3}@media(max-width:768px){.face-controls{position:absolute;left:auto;right:12px;top:auto;bottom:80px;transform:none}.move-history{top:56px;right:12px;min-width:140px}.action-buttons{bottom:16px}.keyboard-hint{display:none}.face-btn,.face-btn-inv{width:36px;height:36px}.title{font-size:12px}}@media(max-width:480px){.face-controls{right:8px;bottom:70px;padding:10px 8px}.face-btn,.face-btn-inv{width:32px;height:32px;font-size:12px}.controls-overlay{padding:16px}}