:root{--bg: #111113;--bg-2: #1c1c1e;--bg-3: #2c2c2e;--bg-4: #3a3a3c;--border: rgba(255, 255, 255, .07);--border-hover: rgba(255, 255, 255, .14);--text: #f5f5f7;--text-secondary: rgba(245, 245, 247, .55);--text-tertiary: rgba(245, 245, 247, .28);--accent: #0a84ff;--accent-hover: #339cff;--accent-dim: rgba(10, 132, 255, .15);--playing: #ff375f;--playing-dim: rgba(255, 55, 95, .15);--success: #30d158;--radius-sm: 6px;--radius: 10px;--radius-lg: 14px;--radius-xl: 20px;--sidebar-width: 240px;--player-height: 80px;--font-display: "Syne", sans-serif;--font-body: "DM Sans", sans-serif;--shadow-sm: 0 1px 3px rgba(0,0,0,.4);--shadow: 0 4px 20px rgba(0,0,0,.5);--shadow-lg: 0 8px 40px rgba(0,0,0,.6)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{height:100%}body{height:100%;background:var(--bg);color:var(--text);font-family:var(--font-body);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased;overflow:hidden}#root{height:100%}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--bg-4);border-radius:99px}::-webkit-scrollbar-thumb:hover{background:#ffffff40}h1,h2,h3,h4{font-family:var(--font-display)}.truncate{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}button{font-family:var(--font-body);cursor:pointer;border:none;background:none;color:inherit}input,textarea{font-family:var(--font-body);font-size:14px}.app-layout{display:grid;grid-template-columns:var(--sidebar-width) 1fr;grid-template-rows:1fr var(--player-height);height:100vh;overflow:hidden}.sidebar{display:flex;grid-row:1 / 2;grid-column:1 / 2;border-right:1px solid var(--border);overflow-y:auto;overflow-x:hidden}.main-content{grid-row:1 / 2;grid-column:2 / 3;overflow-y:auto;overflow-x:hidden}.player-bar{grid-row:2 / 3;grid-column:1 / 3;border-top:1px solid var(--border);background:#111113eb;backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px)}@keyframes fadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@keyframes spin{to{transform:rotate(360deg)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}.fade-in{animation:fadeIn .2s ease forwards}.input{width:100%;background:var(--bg-3);border:1px solid var(--border);border-radius:var(--radius);padding:9px 12px;color:var(--text);outline:none;transition:border-color .15s,box-shadow .15s}.input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-dim)}.input::placeholder{color:var(--text-tertiary)}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:var(--radius);font-size:14px;font-weight:500;transition:all .15s;white-space:nowrap}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.btn-ghost{background:transparent;color:var(--text-secondary)}.btn-ghost:hover{background:var(--bg-3);color:var(--text)}.btn-danger{background:transparent;color:#ff453a}.btn-danger:hover{background:#ff453a1f}.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:var(--radius-sm);color:var(--text-secondary);transition:background .15s,color .15s;flex-shrink:0}.icon-btn:hover{background:var(--bg-3);color:var(--text)}.icon-btn.active{color:var(--accent)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .15s ease}.modal{background:var(--bg-2);border:1px solid var(--border);border-radius:var(--radius-xl);padding:24px;width:100%;max-width:420px;box-shadow:var(--shadow-lg);animation:fadeIn .15s ease}.modal-title{font-family:var(--font-display);font-size:18px;font-weight:700;margin-bottom:20px}.ctx-menu{position:fixed;background:#2c2c2ef2;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:4px;z-index:999;min-width:180px;animation:fadeIn .1s ease}.ctx-item{display:flex;align-items:center;gap:8px;padding:7px 10px;border-radius:var(--radius-sm);font-size:13px;cursor:pointer;color:var(--text);transition:background .1s}.ctx-item:hover{background:var(--accent);color:#fff}.ctx-item.danger:hover{background:#ff453a}.ctx-item svg{opacity:.7}.track-row:hover{background:var(--bg-2)!important}.track-row:hover .track-num{display:none}.track-row:hover .play-btn{display:flex!important}.track-row:hover .row-menu-btn{opacity:1!important}.progress-bar:hover{height:5px!important}.progress-bar:hover .progress-thumb{opacity:1!important}.spinner{width:18px;height:18px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite;display:inline-block}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:80px 40px;color:var(--text-tertiary);text-align:center}.empty-state svg{opacity:.3}.empty-state p{font-size:13px;max-width:240px;line-height:1.6}@media (max-width: 768px){:root{--sidebar-width: 0px;--player-height: 130px}.app-layout{grid-template-columns:1fr;grid-template-rows:1fr var(--player-height);position:relative}.sidebar{display:none;position:fixed;top:0;right:0;bottom:0;left:0;z-index:200;width:280px;grid-column:unset;grid-row:unset}.sidebar.open{display:flex}.sidebar-overlay{display:none;position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;z-index:199}.sidebar-overlay.open{display:block}.main-content{grid-column:1;grid-row:1;padding-top:56px}.player-bar{grid-column:1;grid-row:2}.mobile-header{display:flex!important}.player-bar>div{grid-template-columns:1fr!important;grid-template-rows:auto auto!important;padding:8px 16px!important;gap:6px!important}}@media (min-width: 769px){.mobile-header{display:none!important}}.mobile-header{display:none;position:fixed;top:0;left:0;right:0;height:52px;background:#111113e6;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);align-items:center;padding:0 16px;gap:12px;z-index:100}@keyframes toastIn{0%{opacity:0;transform:translateY(12px) scale(.92)}to{opacity:1;transform:translateY(0) scale(1)}}