:root{--primary: #7c3aed;--secondary: #3b82f6;--accent: #ec4899;--bg: #0f0f1e;--surface: #1a1a2e;--surface-light: #252544;--text: #ffffff;--text-muted: #94a3b8;--success: #22c55e;--warning: #f59e0b;--error: #ef4444;--radius: 12px;--radius-sm: 8px;--shadow: 0 4px 24px rgba(0,0,0,.3);--transition: .2s ease}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,sans-serif;background:var(--bg);color:var(--text);overflow:hidden}button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}input,textarea,select{font-family:inherit}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#7c3aed66;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#7c3aed99}.app-layout{display:flex;width:100vw;height:100vh;overflow:hidden}.sidebar{width:240px;min-width:240px;background:var(--surface);display:flex;flex-direction:column;border-right:1px solid rgba(255,255,255,.05);transition:width .3s ease,min-width .3s ease}.sidebar.collapsed{width:64px;min-width:64px}.sidebar-logo{padding:20px 16px;display:flex;align-items:center;gap:12px;border-bottom:1px solid rgba(255,255,255,.05)}.sidebar-logo img{width:36px;height:36px;border-radius:8px;object-fit:cover}.sidebar-logo-icon{width:36px;height:36px;border-radius:8px;background:linear-gradient(135deg,var(--primary),var(--secondary));display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;color:#fff;flex-shrink:0}.sidebar-logo-text{font-size:16px;font-weight:600;white-space:nowrap;overflow:hidden}.sidebar-nav{flex:1;padding:12px 8px;overflow-y:auto}.nav-item{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:var(--radius-sm);color:var(--text-muted);transition:all var(--transition);margin-bottom:2px;white-space:nowrap;overflow:hidden}.nav-item:hover{background:#ffffff0d;color:var(--text)}.nav-item.active{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff}.nav-item svg{flex-shrink:0}.nav-item span{overflow:hidden;text-overflow:ellipsis}.sidebar-footer{padding:12px 8px;border-top:1px solid rgba(255,255,255,.05)}.main-content{flex:1;overflow-y:auto;padding:24px 32px;position:relative}.page-title{font-size:28px;font-weight:700;margin-bottom:24px}.card{background:var(--surface);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.05);transition:border-color var(--transition)}.card:hover{border-color:#7c3aed4d}.btn{padding:10px 20px;border-radius:var(--radius-sm);font-weight:500;font-size:14px;transition:all var(--transition);display:inline-flex;align-items:center;gap:8px;justify-content:center}.btn-primary{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff}.btn-primary:hover{opacity:.9;transform:translateY(-1px)}.btn-ghost{background:#ffffff0d;color:var(--text)}.btn-ghost:hover{background:#ffffff1a}.btn-danger{background:#ef444426;color:var(--error)}.btn-danger:hover{background:#ef444440}.btn-icon{padding:8px;border-radius:var(--radius-sm);background:#ffffff0d;color:var(--text-muted);display:inline-flex;align-items:center;justify-content:center;transition:all var(--transition)}.btn-icon:hover{background:#ffffff1a;color:var(--text)}.btn-icon.active{background:var(--primary);color:#fff}.input{width:100%;padding:10px 14px;border-radius:var(--radius-sm);background:var(--bg);border:1px solid rgba(255,255,255,.1);color:var(--text);font-size:14px;transition:border-color var(--transition)}.input:focus{outline:none;border-color:var(--primary)}.input::placeholder{color:var(--text-muted)}.label{display:block;font-size:13px;color:var(--text-muted);margin-bottom:6px;font-weight:500}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#0009;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.modal{background:var(--surface);border-radius:var(--radius);padding:24px;width:90%;max-width:500px;max-height:85vh;overflow-y:auto;border:1px solid rgba(255,255,255,.1);animation:slideUp .3s ease}.modal-title{font-size:20px;font-weight:600;margin-bottom:20px}.modal-actions{display:flex;gap:12px;margin-top:24px;justify-content:flex-end}.form-group{margin-bottom:16px}.grid{display:grid;gap:16px}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}@media (max-width: 768px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.sidebar{position:fixed;z-index:100;height:100%}.main-content{padding:16px}}.badge{display:inline-flex;align-items:center;padding:4px 10px;border-radius:20px;font-size:12px;font-weight:500}.badge-primary{background:#7c3aed26;color:var(--primary)}.badge-success{background:#22c55e26;color:var(--success)}.badge-warning{background:#f59e0b26;color:var(--warning)}.badge-error{background:#ef444426;color:var(--error)}.track-list{display:flex;flex-direction:column;gap:4px}.track-row{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:var(--radius-sm);transition:background var(--transition);cursor:pointer}.track-row:hover{background:#ffffff0d}.track-row.playing{background:#7c3aed26}.track-cover{width:44px;height:44px;border-radius:8px;background:linear-gradient(135deg,var(--primary),var(--secondary));display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:18px}.track-cover img{width:100%;height:100%;border-radius:8px;object-fit:cover}.track-info{flex:1;min-width:0}.track-title{font-size:14px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.track-artist{font-size:12px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.track-duration{font-size:12px;color:var(--text-muted);flex-shrink:0}.empty-state{text-align:center;padding:48px 20px;color:var(--text-muted)}.empty-state-icon{font-size:48px;margin-bottom:16px;opacity:.3}.spinner{width:40px;height:40px;border:3px solid rgba(124,58,237,.2);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite;margin:0 auto}@keyframes spin{to{transform:rotate(360deg)}}.loading-screen{display:flex;align-items:center;justify-content:center;height:100vh;flex-direction:column;gap:16px}.fade-in{animation:fadeIn .3s ease}.slide-in{animation:slideUp .3s ease}.toast{position:fixed;bottom:24px;right:24px;background:var(--surface);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-sm);padding:12px 20px;box-shadow:var(--shadow);z-index:2000;animation:slideUp .3s ease;max-width:400px}.toast.success{border-left:3px solid var(--success)}.toast.error{border-left:3px solid var(--error)}.toast-success{border-left:3px solid var(--success)}.toast-error{border-left:3px solid var(--error)}.login-screen{width:100vw;height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--bg) 0%,var(--surface) 100%)}.login-card{width:90%;max-width:420px;background:var(--surface);border-radius:var(--radius);padding:40px 32px;box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.05)}.login-logo{text-align:center;margin-bottom:32px}.login-logo-icon{width:64px;height:64px;border-radius:16px;background:linear-gradient(135deg,var(--primary),var(--secondary));display:inline-flex;align-items:center;justify-content:center;font-size:32px;font-weight:700;color:#fff;margin-bottom:16px}.login-logo h1{font-size:24px;font-weight:700;margin-bottom:4px}.login-logo p{color:var(--text-muted);font-size:14px}.login-tabs{display:flex;gap:0;margin-bottom:24px;border-radius:var(--radius-sm);overflow:hidden;background:var(--bg)}.login-tabs button{flex:1;padding:10px;font-size:14px;font-weight:500;color:var(--text-muted);transition:all var(--transition)}.login-tabs button.active{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff}.login-form{display:flex;flex-direction:column;gap:16px}.login-error{background:#ef44441a;border:1px solid rgba(239,68,68,.3);color:var(--error);padding:10px 14px;border-radius:var(--radius-sm);font-size:13px}.login-footer{text-align:center;margin-top:24px;font-size:14px;color:var(--text-muted)}.login-link{color:var(--primary);font-weight:500;background:none;border:none;cursor:pointer;font-size:14px}.login-link:hover{text-decoration:underline}.dashboard-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}.dashboard-card{cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:32px 20px;text-align:center;transition:all var(--transition)}.dashboard-card:hover{transform:translateY(-2px);border-color:var(--primary)}.dashboard-card-icon{color:var(--primary);margin-bottom:12px}.dashboard-card-value{font-size:36px;font-weight:700}.dashboard-card-label{font-size:14px;color:var(--text-muted);margin-top:4px}