:root{--bg:#1a001c;--bg2:#22002a;--panel:#2d003a;--panel2:#3a0050;--border:rgba(255,255,255,.06);--text:#f5eaff;--muted:#b08cc0;--accent:#d77cff;--accent2:#ff9ff3;--green:#5dffa0;--red:#ff6b8a;--shadow:0 20px 60px rgba(0,0,0,.55);--r:16px;--r2:12px;--nav-h:64px}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html,body{height:100%;overflow:hidden}
body{font-family:-apple-system,BlinkMacSystemFont,'Inter',system-ui,sans-serif;background:var(--bg);color:var(--text);display:flex;flex-direction:column}
#auth-screen{position:fixed;inset:0;background:linear-gradient(135deg,#1a001c 0%,#320040 50%,#1a001c 100%);display:flex;align-items:center;justify-content:center;z-index:1000}
.auth-card{background:var(--panel);border:1px solid var(--border);border-radius:24px;padding:40px 32px;width:100%;max-width:360px;box-shadow:var(--shadow);display:flex;flex-direction:column;align-items:center;gap:20px}
.auth-logo{font-size:40px;margin-bottom:4px}.auth-title{font-size:22px;font-weight:800;letter-spacing:-.3px}.auth-sub{color:var(--muted);font-size:14px}
.auth-card input[type=password]{width:100%;background:rgba(255,255,255,.05);border:1.5px solid rgba(255,255,255,.08);border-radius:12px;color:var(--text);font-size:16px;padding:14px 16px;outline:none;transition:border-color .2s}
.auth-card input[type=password]:focus{border-color:var(--accent)}
.auth-error{color:var(--red);font-size:14px;min-height:20px}
.btn{appearance:none;border:0;cursor:pointer;border-radius:12px;font-weight:700;font-size:15px;padding:13px 20px;transition:opacity .15s,transform .12s;white-space:nowrap}
.btn:active{transform:scale(.97)}.btn:disabled{opacity:.4;pointer-events:none}
.btn-primary{background:linear-gradient(135deg,var(--accent),#a033ff);color:#1a001c;box-shadow:0 8px 24px rgba(215,124,255,.3);width:100%}
.btn-sm{padding:9px 14px;font-size:13px;border-radius:10px}
.btn-ghost{background:rgba(255,255,255,.06);color:var(--text);border:1px solid var(--border)}
.btn-danger{background:rgba(255,100,120,.12);color:var(--red);border:1px solid rgba(255,100,120,.15)}
#app{display:flex;flex-direction:column;height:100%;overflow:hidden}
.topbar{height:var(--nav-h);min-height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;padding:0 20px;background:rgba(26,0,28,.85);backdrop-filter:blur(16px);border-bottom:1px solid var(--border);flex-shrink:0;position:relative;z-index:10}
.topbar-title{font-size:17px;font-weight:800;letter-spacing:-.2px}
.topbar-tabs{display:flex;gap:4px}
.tab-btn{background:none;border:none;color:var(--muted);font-size:13px;font-weight:600;cursor:pointer;padding:8px 14px;border-radius:20px;transition:all .18s}
.tab-btn.active{background:rgba(215,124,255,.14);color:var(--accent)}
.main-content{flex:1;overflow:hidden;display:flex;flex-direction:column}
.page{display:none;flex:1;overflow:hidden;flex-direction:column;animation:fadeIn .2s}
.page.active{display:flex}
@keyframes fadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.scrollable{flex:1;overflow-y:auto;padding:16px;-webkit-overflow-scrolling:touch}
.scrollable::-webkit-scrollbar{width:4px}.scrollable::-webkit-scrollbar-track{background:transparent}.scrollable::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:4px}
.library-header{padding:16px 16px 0;display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.search-input{flex:1;min-width:160px;background:rgba(255,255,255,.05);border:1.5px solid var(--border);border-radius:30px;color:var(--text);font-size:14px;padding:10px 16px;outline:none;transition:border-color .2s}
.search-input:focus{border-color:var(--accent)}.search-input::placeholder{color:var(--muted)}
.track-list{display:flex;flex-direction:column;gap:4px;margin-top:12px}
.track-item{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:var(--r2);cursor:pointer;transition:background .15s;border:1px solid transparent;position:relative}
.track-item:hover,.track-item:active{background:rgba(255,255,255,.05);border-color:var(--border)}
.track-item.playing{background:rgba(215,124,255,.1);border-color:rgba(215,124,255,.2)}
.track-thumb{width:48px;height:48px;border-radius:10px;background:linear-gradient(135deg,var(--panel2),#5d0071);display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.track-info{flex:1;overflow:hidden}
.track-name{font-size:14px;font-weight:600;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;margin-bottom:2px}
.track-meta{font-size:12px;color:var(--muted);overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.track-dur{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.playing-indicator{width:16px;height:16px;display:none;align-items:center;justify-content:center;gap:2px}
.track-item.playing .playing-indicator{display:flex}
.bar{width:3px;background:var(--accent);border-radius:2px;animation:bounce 1s ease-in-out infinite}
.bar:nth-child(2){animation-delay:.2s}.bar:nth-child(3){animation-delay:.4s}
@keyframes bounce{0%,100%{height:6px}50%{height:14px}}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:60px 20px;color:var(--muted);text-align:center}
.empty-state .icon{font-size:52px;margin-bottom:4px}.empty-state h3{font-size:17px;font-weight:700;color:var(--text)}.empty-state p{font-size:14px;line-height:1.5}
.player-page{display:flex;flex-direction:column;gap:0}
.player-visual{display:flex;flex-direction:column;align-items:center;padding:24px 20px 16px;flex-shrink:0}
.artwork{width:min(240px,58vw);height:min(240px,58vw);border-radius:20px;background:linear-gradient(135deg,var(--panel2),#5d0071);display:flex;align-items:center;justify-content:center;font-size:72px;box-shadow:0 20px 60px rgba(0,0,0,.4);flex-shrink:0}
.player-info{margin-top:20px;text-align:center;width:100%}
.player-title{font-size:20px;font-weight:800;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.player-sub{color:var(--muted);font-size:14px;margin-top:4px}
.progress-wrap{padding:0 20px;margin-top:16px;flex-shrink:0}
.progress-bar{width:100%;height:4px;-webkit-appearance:none;appearance:none;background:rgba(255,255,255,.12);border-radius:4px;outline:none;cursor:pointer;accent-color:var(--accent)}
.progress-bar::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;border-radius:50%;background:var(--accent);cursor:pointer;box-shadow:0 0 8px rgba(215,124,255,.5)}
.time-row{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums;margin-top:6px}
.controls-row{display:flex;align-items:center;justify-content:center;gap:24px;padding:16px 20px;flex-shrink:0}
.ctrl-btn{background:none;border:none;cursor:pointer;color:var(--muted);font-size:24px;line-height:1;padding:8px;border-radius:50%;transition:all .15s}
.ctrl-btn:hover,.ctrl-btn:active{color:var(--text);background:rgba(255,255,255,.07)}.ctrl-btn.active{color:var(--accent)}
.play-pause{width:64px;height:64px;border-radius:50%;background:linear-gradient(135deg,var(--accent),#a033ff);border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:26px;box-shadow:0 8px 24px rgba(215,124,255,.35);transition:transform .12s;color:#1a001c}
.play-pause:active{transform:scale(.93)}
.fx-panel{padding:12px 16px 16px;background:rgba(0,0,0,.2);border-top:1px solid var(--border);flex-shrink:0;overflow-y:auto;max-height:260px;-webkit-overflow-scrolling:touch}
.fx-title{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:10px}
.fx-presets{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:12px}
.fx-chip{background:rgba(255,255,255,.06);border:1px solid var(--border);border-radius:999px;color:var(--text);font-size:12px;font-weight:700;padding:6px 12px;cursor:pointer;transition:all .15s}
.fx-chip:hover,.fx-chip.active{background:rgba(215,124,255,.16);border-color:rgba(215,124,255,.3);color:var(--accent)}
.fx-sliders{display:grid;grid-template-columns:1fr 1fr;gap:10px}
@media(max-width:480px){.fx-sliders{grid-template-columns:1fr}}
.fx-row{display:flex;flex-direction:column;gap:4px;background:rgba(255,255,255,.03);border-radius:10px;padding:10px}
.fx-row-head{display:flex;justify-content:space-between;font-size:12px}
.fx-label{font-weight:600}.fx-val{color:var(--accent2);font-variant-numeric:tabular-nums}
.fx-range{width:100%;accent-color:var(--accent2);cursor:pointer;height:4px}
.fx-toggle{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted);padding:6px 0}
.fx-toggle input{accent-color:var(--accent2)}
.upload-zone{border:2px dashed rgba(215,124,255,.25);border-radius:20px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:48px 24px;cursor:pointer;text-align:center;transition:all .2s;margin-bottom:20px}
.upload-zone:hover,.upload-zone.drag{border-color:var(--accent);background:rgba(215,124,255,.05)}
.upload-zone .icon{font-size:42px}.upload-zone h3{font-size:17px;font-weight:700}.upload-zone p{font-size:13px;color:var(--muted)}
.format-chips{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:20px}
.format-chip{background:rgba(255,255,255,.05);border:1px solid var(--border);border-radius:999px;font-size:12px;font-weight:700;padding:5px 10px;color:var(--muted)}
.upload-progress{display:flex;flex-direction:column;gap:8px;margin-top:12px}
.upload-item{display:flex;align-items:center;gap:10px;background:rgba(255,255,255,.04);border-radius:10px;padding:10px 12px}
.upload-item-name{flex:1;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.upload-item-status{font-size:12px;color:var(--green)}
.viz-canvas{width:100%;height:48px;display:block;border-radius:8px;margin-top:8px}
@media(max-width:600px){.topbar-tabs{gap:0}.tab-btn{padding:8px 10px;font-size:12px}.player-title{font-size:17px}.artwork{width:min(180px,65vw);height:min(180px,65vw);font-size:56px}}