:root{--bg-base: #0f0f11;--bg-panel: #1a1a1e;--bg-element: #27272c;--bg-hover: #333339;--text-primary: #f8f8f8;--text-secondary: #a1a1aa;--accent-primary: #6366f1;--accent-hover: #4f46e5;--accent-gradient: linear-gradient(135deg, #6366f1, #a855f7, #ec4899);--border-color: #27272c;--sidebar-width: 380px;--timeline-height: 200px;font-family:Pretendard Variable,Pretendard,-apple-system,BlinkMacSystemFont,system-ui,Roboto,Helvetica Neue,Segoe UI,Apple SD Gothic Neo,Noto Sans KR,Malgun Gothic,"Apple Color Emoji","Segoe UI Emoji",Segoe UI Symbol,sans-serif;line-height:1.5;font-weight:400;color-scheme:dark;color:var(--text-primary);background-color:var(--bg-base);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box;margin:0;padding:0}body{margin:0;height:100vh;width:100vw;overflow:hidden;background-color:var(--bg-base)}#root{height:100%;width:100%}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--bg-element);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-secondary)}.glass-panel{background:#1a1a1ebf;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.05)}.heading-sm{font-size:.875rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--text-secondary);margin-bottom:.75rem}.btn-primary{background:var(--accent-gradient);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:8px;font-weight:600;cursor:pointer;transition:opacity .2s,transform .1s;display:flex;align-items:center;justify-content:center;gap:.5rem}.btn-primary:hover{opacity:.9}.btn-primary:active{transform:scale(.98)}.btn-secondary{background:var(--bg-element);color:var(--text-primary);border:1px solid var(--border-color);padding:.5rem 1rem;border-radius:6px;font-weight:500;cursor:pointer;transition:background .2s}.btn-secondary:hover{background:var(--bg-hover)}input[type=text],input[type=number],select,textarea{width:100%;background:var(--bg-base);border:1px solid var(--border-color);color:var(--text-primary);padding:.75rem;border-radius:6px;font-family:inherit;transition:border-color .2s}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent-primary)}input[type=color]{-webkit-appearance:none;border:none;width:32px;height:32px;border-radius:4px;cursor:pointer;padding:0;overflow:hidden}input[type=color]::-webkit-color-swatch-wrapper{padding:0}input[type=color]::-webkit-color-swatch{border:none;border-radius:4px}.app-container{display:flex;height:100vh;width:100vw;overflow:hidden}.main-content{flex:1;display:flex;flex-direction:column;height:100vh;position:relative}.sidebar{width:var(--sidebar-width);height:100vh;background-color:var(--bg-panel);border-right:1px solid var(--border-color);display:flex;flex-direction:column;overflow-y:auto;z-index:10}.sidebar-header{padding:1.5rem;border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between}.sidebar-header h2{font-size:1.25rem;font-weight:700;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin:0}.badge{background:#6366f133;color:var(--accent-primary);font-size:.75rem;font-weight:700;padding:.25rem .5rem;border-radius:4px}.sidebar-section{padding:1.5rem;border-bottom:1px solid var(--border-color)}.heading-sm{display:flex;align-items:center;gap:.5rem}.input-group{margin-top:1rem;display:flex;flex-direction:column;gap:.5rem}.input-group label{font-size:.875rem;color:var(--text-secondary);font-weight:500}.row-inputs{display:flex;gap:1rem;align-items:flex-end}.flex-1{flex:1}.canvas-container{flex:1;background-color:var(--bg-base);display:flex;align-items:center;justify-content:center;padding:2rem;overflow:hidden;background-image:radial-gradient(var(--bg-element) 1px,transparent 0);background-size:20px 20px}.canvas-wrapper{position:relative;width:auto;height:100%;aspect-ratio:9/16;max-width:100%;box-shadow:0 25px 50px -12px #00000080;border-radius:8px;overflow:hidden;border:1px solid var(--border-color);background:#000}.main-canvas{width:100%;height:100%;display:block}.timeline-container{height:var(--timeline-height);width:100%;border-top:1px solid var(--border-color);display:flex;flex-direction:column;z-index:20}.timeline-header{padding:.75rem 1.5rem;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--border-color);background-color:var(--bg-panel)}.timeline-controls{display:flex;align-items:center;gap:1rem}.icon-btn{width:36px;height:36px;padding:0;display:flex;align-items:center;justify-content:center;border-radius:50%}.time-display{font-family:inherit;font-variant-numeric:tabular-nums;font-size:.875rem;color:var(--text-secondary);font-weight:500}.timeline-tracks{flex:1;padding:1rem 1.5rem;display:flex;flex-direction:column;gap:.5rem;overflow-y:auto;background-color:var(--bg-base)}.track-row{display:flex;height:32px;align-items:center;gap:1rem}.track-label{width:100px;font-size:.75rem;color:var(--text-secondary);display:flex;align-items:center;gap:.5rem;font-weight:500}.track-area{flex:1;height:100%;background:var(--bg-element);border-radius:4px;position:relative;overflow:hidden}.track-item{position:absolute;top:0;left:0;height:100%;border-radius:4px;display:flex;align-items:center;padding:0 .5rem;font-size:.75rem;font-weight:600;color:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.bg-track{background:var(--accent-primary);opacity:.5}.text-track{background:var(--accent-gradient)}