:root{--bg-deepest:#0a0a0f;--bg-deep:#111118;--bg-surface:#1a1a24;--bg-elevated:#223;--bg-hover:#2a2a3d;--accent:#e8a624;--accent-glow:#e8a6244d;--accent-hover:#f0b840;--accent-muted:#e8a62426;--play-bg:#2ecc40;--play-hover:#3ddf50;--play-glow:#2ecc4059;--text-primary:#e8e8f0;--text-secondary:#99a;--text-muted:#667;--border:#ffffff0f;--border-accent:#e8a6244d;--glass-bg:#161622d9;--glass-border:#ffffff14;--glass-blur:20px;--radius:8px;--radius-sm:5px;--radius-lg:12px;--transition:.2s cubic-bezier(.4, 0, .2, 1);--shadow:0 4px 24px #0006;--toolbar-height:52px;--settings-height:44px;--player-height:60px;--font:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;font-family:var(--font);color:var(--text-primary);background:var(--bg-deepest);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:13px;overflow:hidden}#app{flex-direction:column;height:100vh;display:flex;position:relative}#toolbar{height:var(--toolbar-height);background:var(--glass-bg);-webkit-backdrop-filter:blur(var(--glass-blur));border-bottom:1px solid var(--glass-border);z-index:100;flex-shrink:0;justify-content:space-between;align-items:center;padding:0 16px;display:flex}.toolbar-left,.toolbar-center,.toolbar-right{align-items:center;gap:12px;display:flex}.toolbar-left{flex:none}.toolbar-center{flex:1;justify-content:center}.toolbar-right{flex:none}#logo{-webkit-user-select:none;user-select:none;align-items:center;gap:8px;display:flex}.logo-icon{color:var(--accent);filter:drop-shadow(0 0 8px var(--accent-glow))}.logo-text{letter-spacing:-.5px;background:linear-gradient(135deg, var(--accent), #f0d060);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:18px;font-weight:700}#song-info{flex-direction:column;align-items:center;gap:1px;display:flex}#song-title{color:var(--text-primary);font-size:14px;font-weight:600}#song-artist{color:var(--text-secondary);font-size:11px}#settings-bar{height:var(--settings-height);background:var(--bg-deep);border-bottom:1px solid var(--border);flex-shrink:0;align-items:center;gap:24px;padding:0 16px;display:flex;overflow-x:auto}.settings-group{white-space:nowrap;align-items:center;gap:8px;display:flex}.setting-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;font-size:11px;font-weight:500}.toggle-group{background:var(--bg-surface);border-radius:var(--radius);border:1px solid var(--border);display:flex;overflow:hidden}.toggle-btn{font-size:12px;font-weight:500;font-family:var(--font);color:var(--text-secondary);cursor:pointer;transition:var(--transition);background:0 0;border:none;padding:5px 14px}.toggle-btn:hover{color:var(--text-primary);background:var(--bg-hover)}.toggle-btn.active{background:var(--accent);color:#000;font-weight:600}.select-control{font-size:12px;font-family:var(--font);color:var(--text-primary);background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;appearance:none;transition:var(--transition);background-image:url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%239999aa' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");background-position:right 8px center;background-repeat:no-repeat;padding:5px 28px 5px 10px}.select-control:hover{border-color:var(--accent)}.select-control:focus{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-glow);outline:none}.zoom-controls{align-items:center;gap:6px;display:flex}#zoom-level{color:var(--text-secondary);text-align:center;min-width:36px;font-size:12px;font-weight:500}#viewport{background:var(--bg-surface);flex:1;position:relative;overflow:auto}#alphaTab{width:100%;min-height:100%}.at-cursor-bar{background:#e8a62414!important}.at-cursor-beat{background:#e8a62466!important;width:3px!important}.at-highlight *{fill:var(--accent)!important;color:var(--accent)!important}.at-selection div{background:#e8a6241f!important}#loading-overlay{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:1000;background:#0a0a0fe6;flex-direction:column;justify-content:center;align-items:center;gap:16px;transition:opacity .4s,visibility .4s;display:flex;position:fixed;inset:0}#loading-overlay.hidden{opacity:0;visibility:hidden;pointer-events:none}.loading-spinner{border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;width:40px;height:40px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}#loading-text{color:var(--text-secondary);font-size:14px;font-weight:500}#player-bar{height:var(--player-height);background:var(--glass-bg);-webkit-backdrop-filter:blur(var(--glass-blur));border-top:1px solid var(--glass-border);z-index:100;flex-shrink:0;align-items:center;gap:16px;padding:0 16px;display:flex}.player-left,.player-center,.player-right{align-items:center;gap:12px;display:flex}.player-left{flex:none}.player-center{flex:none;gap:8px}.player-right{flex:0 auto;gap:16px}#track-info{color:var(--text-secondary);align-items:center;gap:8px;display:flex}#track-name{font-size:12px;font-weight:500}.btn-transport{border:1px solid var(--border);width:36px;height:36px;color:var(--text-secondary);cursor:pointer;transition:var(--transition);background:0 0;border-radius:50%;justify-content:center;align-items:center;display:flex}.btn-transport:hover{color:var(--text-primary);border-color:var(--text-muted);background:var(--bg-hover)}.btn-transport.active{color:var(--accent);border-color:var(--accent);background:var(--accent-muted)}.btn-play{background:var(--play-bg);color:#fff;cursor:pointer;width:48px;height:48px;transition:var(--transition);box-shadow:0 0 20px var(--play-glow);border:none;border-radius:50%;justify-content:center;align-items:center;display:flex}.btn-play:hover{background:var(--play-hover);box-shadow:0 0 30px var(--play-glow);transform:scale(1.05)}.btn-play:active{transform:scale(.95)}.btn-play.playing #icon-play{display:none}.btn-play.playing #icon-pause{display:block!important}.player-control-group{color:var(--text-muted);align-items:center;gap:6px;display:flex}.control-label{text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);font-size:10px;font-weight:500}.slider{appearance:none;background:var(--bg-elevated);cursor:pointer;border-radius:2px;outline:none;width:80px;height:4px}.slider::-webkit-slider-thumb{-webkit-appearance:none;background:var(--text-primary);cursor:pointer;width:14px;height:14px;transition:var(--transition);border-radius:50%;box-shadow:0 0 4px #0000004d}.slider::-webkit-slider-thumb:hover{background:var(--accent);box-shadow:0 0 8px var(--accent-glow);transform:scale(1.2)}.slider-short{width:55px}#tempo-display,#metronome-display{color:var(--text-secondary);text-align:right;min-width:32px;font-size:11px;font-weight:600}#position-display{color:var(--text-secondary);font-variant-numeric:tabular-nums;gap:3px;font-size:12px;font-weight:500;display:flex}.time-sep{color:var(--text-muted)}.btn{font-size:12px;font-weight:500;font-family:var(--font);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;transition:var(--transition);background:var(--bg-surface);color:var(--text-primary);-webkit-user-select:none;user-select:none;align-items:center;gap:6px;padding:6px 14px;display:inline-flex}.btn:hover{background:var(--bg-hover);border-color:var(--text-muted)}.btn-accent{background:var(--accent);color:#000;border-color:#0000;font-weight:600}.btn-accent:hover{background:var(--accent-hover);box-shadow:0 0 12px var(--accent-glow);border-color:#0000}.btn-icon{border-radius:var(--radius-sm);justify-content:center;align-items:center;width:28px;height:28px;padding:0;font-size:16px;font-weight:600;display:flex}.btn-small{width:auto;height:24px;padding:0 8px;font-size:12px}.btn-toggle{height:26px;font-size:11px;font-weight:600;font-family:var(--font);background:var(--bg-surface);color:var(--text-muted);border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition);-webkit-user-select:none;user-select:none;align-items:center;gap:4px;padding:3px 8px;display:inline-flex}.btn-toggle:hover{border-color:var(--text-muted);color:var(--text-secondary)}.btn-toggle.active{background:var(--accent-muted);border-color:var(--accent);color:var(--accent)}.btn-toggle.active .toggle-status{color:var(--accent)}.countin-label{letter-spacing:1px;font-size:10px;font-weight:700}.toggle-status{color:var(--text-muted);font-size:10px;font-weight:600}#drop-overlay{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);z-index:2000;opacity:0;visibility:hidden;background:#0a0a0feb;justify-content:center;align-items:center;transition:opacity .3s,visibility .3s;display:flex;position:fixed;inset:0}#drop-overlay.visible{opacity:1;visibility:visible}.drop-content{border:2px dashed var(--accent);border-radius:var(--radius-lg);background:var(--accent-muted);color:var(--accent);text-align:center;flex-direction:column;align-items:center;gap:16px;padding:48px 64px;animation:2s ease-in-out infinite drop-pulse;display:flex}.drop-content p{font-size:20px;font-weight:600}.drop-content span{color:var(--text-secondary);font-size:12px}@keyframes drop-pulse{0%,to{border-color:var(--accent)}50%{border-color:#e8a62466}}#viewport::-webkit-scrollbar{width:8px;height:8px}#viewport::-webkit-scrollbar-track{background:var(--bg-deep)}#viewport::-webkit-scrollbar-thumb{background:var(--bg-elevated);border-radius:4px}#viewport::-webkit-scrollbar-thumb:hover{background:var(--bg-hover)}@media (width<=768px){#settings-bar{gap:12px;padding:0 8px}.player-right{gap:8px}.player-control-group{gap:4px}.slider{width:50px}.slider-short{width:40px}.control-label,#song-info{display:none}}@media (width<=480px){.player-left,#position-display{display:none}}