:root{--bg: #ffffff;--surface: #f6f6f6;--ink: #121214;--ink-secondary: #6b7280;--sky-from: #7da1c5;--sky-to: #c3dae8;--accent: #2897cc;--accent-soft: #e2f4ff;--accent-band: #8ec9e8;--border: rgba(0, 0, 0, .08);--gradient-sky: linear-gradient(180deg, var(--sky-from), var(--sky-to));--font-sans: "Pretendard", -apple-system, "Inter", sans-serif;--font-weight-title: 700;--font-weight-body: 400;--font-weight-body-strong: 500;--tracking-tight: -.02em;--radius-card: 20px;--radius-card-lg: 24px;--radius-thumb: 12px;--radius-pill: 9999px;--shadow-float: 0 8px 24px rgba(0, 0, 0, .08);--touch-target-min: 44px;--thumb-button-min-height: 56px}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--ink);font-family:var(--font-sans);font-weight:var(--font-weight-body);-webkit-font-smoothing:antialiased}button{font-family:inherit;cursor:pointer}.screen{min-height:100vh;max-width:430px;margin:0 auto;padding-bottom:40px}.list-header{background:var(--gradient-sky);padding:32px 20px 24px;border-radius:0 0 var(--radius-card-lg) var(--radius-card-lg)}.app-title{margin:0;font-size:28px;font-weight:var(--font-weight-title);letter-spacing:var(--tracking-tight);color:var(--bg)}.app-subtitle{margin:6px 0 0;font-size:14px;font-weight:var(--font-weight-body-strong);color:var(--bg);opacity:.85}.folder-chips{display:flex;gap:8px;padding:14px 20px 0;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}.folder-chips::-webkit-scrollbar{display:none}.chip{flex-shrink:0;min-height:var(--touch-target-min);padding:0 16px;background:var(--surface);color:var(--ink);border:1px solid var(--border);border-radius:var(--radius-pill);font-size:14px;font-weight:var(--font-weight-body-strong);user-select:none;-webkit-user-select:none;-webkit-touch-callout:none}.chip.chip-active{background:var(--accent-soft);color:var(--accent);border-color:var(--accent-soft)}.chip-add{min-width:var(--touch-target-min);font-size:18px;color:var(--ink-secondary)}.add-section{padding:16px 20px 0}.add-form{display:flex;gap:8px}.add-input{flex:1;min-width:0;min-height:var(--touch-target-min);background:var(--surface);color:var(--ink);border:1px solid var(--border);border-radius:var(--radius-pill);padding:0 16px;font:inherit;font-size:15px}.add-input::placeholder{color:var(--ink-secondary)}.btn-primary{min-height:var(--touch-target-min);background:var(--ink);color:var(--bg);border:none;border-radius:var(--radius-pill);padding:0 20px;font-size:15px;font-weight:var(--font-weight-title)}.btn-primary:disabled{opacity:.5;cursor:default}.btn-secondary{min-height:var(--touch-target-min);background:var(--bg);color:var(--ink);border:1px solid var(--border);border-radius:var(--radius-pill);padding:0 20px;font-size:15px;font-weight:var(--font-weight-body-strong)}.btn-sm{padding:0 14px;font-size:14px}.clip-banner{margin:12px 20px 0;background:var(--accent-soft);border:1px solid var(--border);border-radius:var(--radius-card);padding:12px 14px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}.clip-thumb{width:64px;aspect-ratio:16 / 9;object-fit:cover;border-radius:var(--radius-thumb);flex-shrink:0}.clip-text{flex:1;min-width:120px;font-size:14px;font-weight:var(--font-weight-body-strong);color:var(--accent)}.clip-actions{display:flex;gap:8px;margin-left:auto}.notice{margin:12px 20px 0;font-size:14px;color:var(--ink-secondary)}.empty-state{margin:20px;padding:36px 20px;background:var(--gradient-sky);border-radius:var(--radius-card-lg);text-align:center;color:var(--bg)}.empty-title{margin:0;font-size:18px;font-weight:var(--font-weight-title);letter-spacing:var(--tracking-tight)}.empty-desc{margin:8px 0 0;font-size:14px;opacity:.9}.song-list{list-style:none;margin:16px 0 0;padding:0 20px;display:flex;flex-direction:column;gap:10px}.song-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);padding:10px}.song-card.dragging{box-shadow:var(--shadow-float);position:relative;z-index:1}.song-row{display:flex;align-items:center;gap:10px}.song-thumb{width:88px;aspect-ratio:16 / 9;object-fit:cover;border-radius:var(--radius-thumb);flex-shrink:0;background:var(--border)}.song-main{flex:1;min-width:0;min-height:var(--touch-target-min);display:flex;flex-direction:column;justify-content:center;gap:4px;text-align:left;background:none;border:none;padding:0;color:inherit}.song-title{font-size:15px;font-weight:var(--font-weight-body-strong);letter-spacing:var(--tracking-tight);overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.song-section{font-size:13px;color:var(--ink-secondary)}.icon-btn{width:var(--touch-target-min);height:var(--touch-target-min);flex-shrink:0;display:flex;align-items:center;justify-content:center;background:none;border:none;border-radius:var(--radius-pill);color:var(--ink-secondary);font-size:18px;padding:0}.drag-handle{touch-action:none;user-select:none;-webkit-user-select:none;cursor:grab;font-size:20px}.confirm-row{display:flex;align-items:center;gap:8px;margin-top:10px;padding-top:10px;border-top:1px solid var(--border)}.confirm-text{flex:1;font-size:14px;font-weight:var(--font-weight-body-strong)}.add-target-hint{margin:8px 2px 0;font-size:12px;color:var(--ink-secondary)}.song-main{user-select:none;-webkit-user-select:none;-webkit-touch-callout:none}.sheet-layer{position:fixed;top:0;right:0;bottom:0;left:0;z-index:20;display:flex;flex-direction:column;justify-content:flex-end}.sheet-backdrop{position:absolute;top:0;right:0;bottom:0;left:0;background:var(--ink);opacity:.4;border:none;padding:0}.sheet-panel{position:relative;z-index:1;width:100%;max-width:430px;margin:0 auto;background:var(--bg);border-radius:var(--radius-card-lg) var(--radius-card-lg) 0 0;border:1px solid var(--border);border-bottom:none;box-shadow:var(--shadow-float);padding:20px 20px calc(20px + env(safe-area-inset-bottom));display:flex;flex-direction:column;gap:12px}.sheet-title{margin:0;font-size:17px;font-weight:var(--font-weight-title);letter-spacing:var(--tracking-tight)}.sheet-desc{margin:0;font-size:14px;color:var(--ink-secondary);overflow:hidden;text-overflow:ellipsis}.sheet-input{width:100%}.sheet-actions{display:flex;gap:8px;justify-content:flex-end}.sheet-list{display:flex;flex-direction:column;gap:6px}.sheet-row{min-height:48px;display:flex;align-items:center;justify-content:space-between;gap:8px;padding:0 16px;background:var(--surface);color:var(--ink);border:1px solid var(--border);border-radius:var(--radius-card);font-size:15px;font-weight:var(--font-weight-body-strong);text-align:left}.sheet-row:disabled{opacity:.5;cursor:default}.sheet-row-danger{color:var(--accent)}.sheet-row-meta{font-size:13px;color:var(--ink-secondary);font-weight:var(--font-weight-body)}.player-screen{display:flex;flex-direction:column;gap:14px;padding:16px 20px;padding-bottom:calc(180px + env(safe-area-inset-bottom))}.player-header{display:flex;align-items:center;gap:10px}.player-title{flex:1;min-width:0;margin:0;font-size:16px;font-weight:var(--font-weight-title);letter-spacing:var(--tracking-tight);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.player-video{position:relative;aspect-ratio:16 / 9;border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden;background:var(--ink)}.player-video iframe{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;border:0}.player-error{aspect-ratio:16 / 9;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:20px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);text-align:center}.player-error-title{margin:0;font-size:17px;font-weight:var(--font-weight-title);letter-spacing:var(--tracking-tight)}.player-error-desc{margin:0;font-size:14px;color:var(--ink-secondary)}.player-badges{display:flex;align-items:center;gap:8px}.pill-badge{display:inline-flex;align-items:center;gap:6px;min-height:var(--touch-target-min);padding:0 16px;background:var(--bg);color:var(--ink);border:1px solid var(--border);border-radius:var(--radius-pill);font-size:14px;font-weight:var(--font-weight-body-strong)}.rate-pill:disabled{opacity:.5;cursor:default}.rate-pill.rate-active{background:var(--accent-soft);color:var(--accent)}.loop-badge{color:var(--ink-secondary)}.loop-toggle{background:var(--accent-soft);color:var(--accent)}.loop-toggle.loop-off{background:var(--surface);color:var(--ink-secondary)}.player-loading{font-size:13px;color:var(--ink-secondary)}.timeline-wrap{display:flex;flex-direction:column;gap:4px}.timeline{position:relative;padding:20px 0}.timeline-track{position:relative;height:8px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-pill);touch-action:none}.timeline-band{position:absolute;top:-1px;bottom:-1px;background:var(--accent-band);border-radius:var(--radius-pill)}.timeline-playhead{position:absolute;top:-5px;width:2px;height:16px;background:var(--ink);border-radius:var(--radius-pill);transform:translate(-50%);pointer-events:none}.timeline-handle{position:absolute;top:50%;transform:translate(-50%,-50%);width:var(--touch-target-min);height:var(--touch-target-min);display:flex;align-items:center;justify-content:center;background:none;border:none;padding:0;touch-action:none;user-select:none;-webkit-user-select:none}.timeline-handle:after{display:flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:var(--radius-pill);background:var(--accent);border:2px solid var(--bg);box-shadow:var(--shadow-float);color:var(--bg);font-size:12px;font-weight:var(--font-weight-title)}.handle-a:after{content:"A"}.handle-b:after{content:"B"}.timeline-handle.handle-dragging:after{width:36px;height:36px;font-size:15px}.timeline-handle.handle-muted{opacity:.35}.drag-time-label{position:absolute;top:-16px;transform:translate(-50%);padding:4px 12px;background:var(--ink);color:var(--bg);border-radius:var(--radius-pill);font-size:13px;font-weight:var(--font-weight-body-strong);white-space:nowrap;pointer-events:none;z-index:4}.finetune-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:5;background:none;border:none;padding:0}.finetune-popover{position:absolute;bottom:calc(100% - 8px);transform:translate(-50%);z-index:6;width:max-content;padding:10px 12px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-card);box-shadow:var(--shadow-float);display:flex;flex-direction:column;gap:8px}.finetune-title{margin:0;font-size:13px;font-weight:var(--font-weight-body-strong);color:var(--ink-secondary);text-align:center}.finetune-row{display:flex;gap:6px}.finetune-btn{min-width:var(--touch-target-min);min-height:var(--touch-target-min);padding:0 10px;background:var(--surface);color:var(--ink);border:1px solid var(--border);border-radius:var(--radius-pill);font-size:14px;font-weight:var(--font-weight-body-strong)}.timeline-times{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:13px;color:var(--ink-secondary)}.timeline-section-label{color:var(--accent);font-weight:var(--font-weight-body-strong)}.section-hint{margin:4px 0 0;font-size:13px;color:var(--ink-secondary);text-align:center}.player-notice{margin:0}.thumb-zone{position:fixed;left:50%;bottom:0;transform:translate(-50%);width:100%;max-width:430px;z-index:10;display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:12px 16px calc(12px + env(safe-area-inset-bottom));background:var(--bg);border-top:1px solid var(--border)}.thumb-btn{min-height:var(--thumb-button-min-height);padding:0 8px;background:var(--ink);color:var(--bg);border:none;border-radius:var(--radius-pill);font-size:15px;font-weight:var(--font-weight-title);letter-spacing:var(--tracking-tight)}.thumb-btn:disabled{opacity:.4;cursor:default}.thumb-split{display:flex;gap:8px}.thumb-split .thumb-btn{flex:1;min-width:var(--touch-target-min);padding:0 4px;font-size:14px}