:root{--bg-primary: #0a0a0f;--bg-secondary: #121218;--bg-tertiary: #1a1a24;--bg-hover: #22222e;--text-primary: #e8e8ed;--text-secondary: #a0a0b0;--text-muted: #6b6b80;--accent: #7c3aed;--accent-hover: #9461f7;--accent-dim: #5b21b6;--danger: #ef4444;--danger-hover: #f87171;--success: #22c55e;--border: #2a2a38;--border-focus: #7c3aed;--radius: 8px;--radius-lg: 12px;--shadow: 0 4px 20px rgba(0, 0, 0, .4)}*{margin:0;padding:0;box-sizing:border-box}html,body,#root{height:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.5;-webkit-font-smoothing:antialiased}a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-hover)}.app-layout{display:flex;height:100vh}.sidebar{width:240px;background:var(--bg-secondary);border-right:1px solid var(--border);display:flex;flex-direction:column;padding:20px 0;flex-shrink:0}.sidebar-logo{padding:0 20px 20px;font-size:1.4rem;font-weight:700;color:var(--accent);letter-spacing:-.5px}.sidebar-nav{display:flex;flex-direction:column;gap:2px;padding:0 8px}.sidebar-nav a{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:var(--radius);color:var(--text-secondary);font-size:.9rem;font-weight:500;transition:all .15s}.sidebar-nav a:hover,.sidebar-nav a.active{background:var(--bg-hover);color:var(--text-primary)}.sidebar-nav a.now-playing-nav-link{color:var(--accent);font-weight:600}.sidebar-nav a.now-playing-nav-link:hover{background:var(--bg-hover);color:var(--accent-hover)}.sidebar-nav a.active.now-playing-nav-link{background:var(--accent-dim);color:#fff}.sidebar-nav a.active{color:var(--accent)}.main-content{flex:1;overflow-y:auto;padding:32px}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.page-header h1{font-size:1.8rem;font-weight:700;letter-spacing:-.5px}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 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h3{font-size:1rem;margin-bottom:6px}.playlist-card p{color:var(--text-muted);font-size:.85rem}.form-group{margin-bottom:16px}.form-group label{display:block;font-size:.85rem;font-weight:500;color:var(--text-secondary);margin-bottom:6px}.form-group input,.form-group textarea{width:100%;padding:10px 12px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius);color:var(--text-primary);font-size:.9rem;font-family:inherit;transition:border-color .15s}.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--border-focus)}.form-group textarea{min-height:80px;resize:vertical}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:100}.modal{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;width:100%;max-width:520px;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow)}.modal h2{font-size:1.2rem;margin-bottom:20px}.modal-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:20px}.empty-state{text-align:center;padding:60px 20px;color:var(--text-muted)}.empty-state h3{font-size:1.2rem;margin-bottom:8px;color:var(--text-secondary)}.toast{position:fixed;bottom:20px;right:20px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius);padding:12px 20px;color:var(--text-primary);font-size:.9rem;z-index:200;box-shadow:var(--shadow);animation:slideIn .2s ease}@keyframes slideIn{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.track-row{display:grid;grid-template-columns:40px 1.5fr 1fr 64px 44px;align-items:center;padding:8px 16px;border-radius:var(--radius);transition:background .15s;gap:8px 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0;z-index:50;box-shadow:var(--shadow);animation:menuFadeIn .12s ease;will-change:opacity,transform;transform:translateZ(0)}@keyframes menuFadeIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.action-menu-item{display:flex;align-items:center;gap:8px;width:100%;padding:8px 14px;background:none;border:none;color:var(--text-primary);font-size:.82rem;cursor:pointer;transition:background .1s;text-align:left}.action-menu-item:hover{background:var(--bg-hover)}.action-menu-item:disabled{opacity:.5;cursor:default}.action-menu-item:disabled:hover{background:none}.action-menu-icon{width:18px;text-align:center;font-size:.85rem;flex-shrink:0}.action-menu-danger{color:var(--danger)}.action-menu-danger:hover{background:#ef44441a}.action-menu-divider{height:1px;background:var(--border);margin:4px 0}@media(max-width:680px){.track-row{grid-template-columns:36px 1fr 44px;gap:4px 8px;padding:8px 12px}.track-artist,.col-duration,.track-header .col-duration,.track-header 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