:root{--bg-main:#060709;--bg-card:#101216;--bg-board:#0d0f12;--bg-cell:#15181e;--bg-cell-hover:#1f242e;--border-subtle:#222630;--border-block:#4f5b73;--border-active:#a78bfa;--text-primary:#f3f4f6;--text-secondary:#9ca3af;--text-muted:#4b5563;--color-original:#fff;--color-user:#38bdf8;--color-note:#6b7280;--color-error:#f87171;--accent-purple:#8b5cf6;--accent-purple-light:#a78bfa;--accent-purple-glow:#a78bfa40;--font-sans:"Outfit", "Plus Jakarta Sans", system-ui, -apple-system, sans-serif;--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 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#a78bfa33;-webkit-background-clip:text;font-size:1.5rem;font-weight:800}.subtitle.svelte-1n46o8q{color:var(--text-secondary);letter-spacing:3px;font-size:.7rem;font-weight:500}.stats-panel.svelte-1n46o8q{gap:12px;display:flex}.stat-badge.svelte-1n46o8q{background-color:var(--bg-card);border:1px solid var(--border-subtle);border-radius:8px;flex-direction:column;align-items:flex-start;gap:2px;padding:8px 16px;transition:all .2s;display:flex}.timer-badge.svelte-1n46o8q{cursor:pointer;border:1px solid var(--border-subtle);background:0 0;background-color:var(--bg-card);color:inherit;text-align:left}.timer-badge.svelte-1n46o8q:hover{border-color:var(--border-block)}.stat-badge.svelte-1n46o8q .label:where(.svelte-1n46o8q){color:var(--text-secondary);letter-spacing:1px;font-size:.65rem;font-weight:600}.stat-badge.svelte-1n46o8q .value:where(.svelte-1n46o8q){color:var(--text-primary);font-size:1.1rem;font-weight:700}.stat-badge.svelte-1n46o8q 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var(--accent-purple);padding-left:8px;font-size:.75rem;font-weight:700}.difficulty-tabs.svelte-1n46o8q{flex-direction:column;gap:8px;display:flex}.diff-btn.svelte-1n46o8q{background-color:var(--bg-cell);border:1px solid var(--border-subtle);color:var(--text-secondary);cursor:pointer;text-align:left;border-radius:8px;padding:10px 14px;font-size:.8rem;font-weight:700;transition:all .2s}.diff-btn.svelte-1n46o8q:hover{background-color:var(--bg-cell-hover);color:var(--text-primary);border-color:var(--border-block)}.diff-btn.active.svelte-1n46o8q{background:linear-gradient(135deg, var(--accent-purple), var(--accent-purple-light));color:var(--bg-main);box-shadow:0 4px 12px var(--accent-purple-glow);border-color:#0000}.toggle-option.svelte-1n46o8q{justify-content:space-between;align-items:center;padding:6px 0;display:flex}.option-label.svelte-1n46o8q{color:var(--text-primary);font-size:.8rem;font-weight:500}.switch-btn.svelte-1n46o8q{background-color:var(--bg-cell);border:1px solid var(--border-subtle);cursor:pointer;border-radius:12px;width:44px;height:24px;transition:all .3s;position:relative}.switch-btn.svelte-1n46o8q .thumb:where(.svelte-1n46o8q){background-color:var(--text-secondary);border-radius:50%;width:16px;height:16px;transition:all .25s cubic-bezier(.5,1.6,.4,.7);position:absolute;top:3px;left:4px}.switch-btn.on.svelte-1n46o8q{background-color:var(--accent-purple);border-color:#0000}.switch-btn.on.svelte-1n46o8q .thumb:where(.svelte-1n46o8q){background-color:var(--text-primary);left:22px}.keyboard-legend.svelte-1n46o8q{border-top:1px solid var(--border-subtle);flex-direction:column;gap:8px;padding-top:16px;display:flex}.keyboard-legend.svelte-1n46o8q h4:where(.svelte-1n46o8q){color:var(--text-muted);letter-spacing:1px;margin-bottom:4px;font-size:.7rem;font-weight:700}.shortcut-row.svelte-1n46o8q{color:var(--text-secondary);justify-content:space-between;align-items:center;font-size:.75rem;display:flex}.shortcut-row.svelte-1n46o8q 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span:where(.svelte-1n46o8q){letter-spacing:.5px;font-size:.65rem;font-weight:700}.control-btn.svelte-1n46o8q:hover:not(:disabled){background-color:var(--bg-cell-hover);color:var(--text-primary);border-color:var(--border-block)}.control-btn.svelte-1n46o8q:hover:not(:disabled) svg:where(.svelte-1n46o8q){transform:scale(1.1)}.control-btn.svelte-1n46o8q:disabled{opacity:.3;cursor:not-allowed}.control-btn.active-tool.svelte-1n46o8q{color:var(--accent-purple-light);border-color:var(--accent-purple-light);background-color:#a78bfa26;box-shadow:0 0 10px #a78bfa1a}.numpad.svelte-1n46o8q{grid-template-columns:repeat(3,1fr);gap:8px;display:grid}.num-btn.svelte-1n46o8q{background-color:var(--bg-cell);border:1px solid var(--border-subtle);color:var(--text-primary);aspect-ratio:1.3;cursor:pointer;border-radius:12px;font-size:1.6rem;font-weight:700;transition:all .15s cubic-bezier(.175,.885,.32,1.275);box-shadow:0 4px 6px #0003}.num-btn.svelte-1n46o8q:hover{background-color:var(--bg-cell-hover);border-color:var(--accent-purple-light);transform:translateY(-2px);box-shadow:0 6px 12px #a78bfa26}.num-btn.svelte-1n46o8q:active{transform:translateY(1px)}.num-btn.completed.svelte-1n46o8q{font-weight:800;color:#10b981!important;background-color:#10b9810d!important;border-color:#10b98166!important;box-shadow:0 0 10px #10b9811a!important}.num-btn.completed.svelte-1n46o8q:hover{transform:none;background-color:#10b9811a!important;box-shadow:0 0 15px #10b98133!important}.paused-overlay.svelte-1n46o8q{width:100%;height:100%;color:inherit;cursor:pointer;z-index:5;background-color:#060709d9;border:none;flex-direction:column;justify-content:center;align-items:center;gap:15px;display:flex;position:absolute;top:0;left:0}.play-icon-container.svelte-1n46o8q{background-color:var(--bg-card);border:2px solid var(--border-block);border-radius:50%;justify-content:center;align-items:center;width:80px;height:80px;transition:all 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strong{color:#fbbf24}.hint-popup-actions.svelte-1n46o8q{justify-content:space-between;align-items:center;margin-top:10px;display:flex}.hint-nav-buttons.svelte-1n46o8q{gap:8px;display:flex}.hint-nav-btn.svelte-1n46o8q{background-color:var(--bg-cell);border:1px solid var(--border-subtle);color:var(--text-primary);cursor:pointer;border-radius:8px;padding:8px 16px;font-size:.8rem;font-weight:700;transition:all .2s}.hint-nav-btn.svelte-1n46o8q:hover:not(:disabled){background-color:var(--bg-cell-hover);border-color:var(--border-block)}.hint-nav-btn.svelte-1n46o8q:disabled{opacity:.3;cursor:not-allowed}.btn-apply-hint.svelte-1n46o8q{background:linear-gradient(135deg, var(--accent-purple), var(--accent-purple-light));color:var(--bg-main);cursor:pointer;border:none;border-radius:8px;padding:8px 16px;font-size:.8rem;font-weight:800;transition:all .2s;box-shadow:0 4px 10px #8b5cf64d}.btn-apply-hint.svelte-1n46o8q:hover{transform:translateY(-1px);box-shadow:0 6px 15px 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