*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-primary: #0a0a0f;--bg-secondary: #12121a;--bg-tertiary: #1a1a28;--bg-hover: #22223a;--text-primary: #f0f0f5;--text-secondary: #9090a8;--text-muted: #606078;--accent: #6366f1;--accent-hover: #818cf8;--accent-glow: rgba(99, 102, 241, .25);--border: #2a2a3e;--border-hover: #3a3a55;--success: #22c55e;--radius: 10px;--font: "Inter", -apple-system, BlinkMacSystemFont, sans-serif}html,body,#root{height:100%;font-family:var(--font);background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased}.app{display:flex;height:100vh;overflow:hidden}.sidebar{width:340px;min-width:340px;background:var(--bg-secondary);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden}.sidebar-header{padding:20px 20px 16px;border-bottom:1px solid var(--border)}.sidebar-header 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option{background:var(--bg-secondary)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 16px;border-radius:8px;font-size:13px;font-weight:600;font-family:var(--font);cursor:pointer;border:none;transition:all .15s;white-space:nowrap}.btn-primary{background:var(--accent);color:#fff;box-shadow:0 2px 12px var(--accent-glow)}.btn-primary:hover{background:var(--accent-hover)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border)}.btn-secondary:hover{background:var(--bg-hover);border-color:var(--border-hover)}.btn-sm{padding:7px 12px;font-size:12px}.presets-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:6px}.preset-card{display:flex;align-items:center;gap:8px;padding:8px;background:var(--bg-tertiary);border:1px solid transparent;border-radius:8px;cursor:pointer;transition:all 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