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12px;background:var(--bg-dark);border:1px solid #444;border-radius:6px;cursor:pointer;color:var(--text-secondary);transition:all .2s}.song-player-actions .song-like-btn:hover{border-color:#666}.song-player-actions .song-like-btn.liked{color:#ff6b6b;border-color:#ff6b6b}.song-player-actions .song-like-btn svg{width:18px;height:18px}.upgrade-modal{max-width:400px;text-align:center}.upgrade-modal-body{padding:24px}.upgrade-icon{margin-bottom:16px;color:#ffa64a}.upgrade-modal h3{margin-bottom:20px;font-size:20px;color:var(--text-primary)}.upgrade-features{list-style:none;text-align:left;margin-bottom:24px}.upgrade-features li{display:flex;align-items:center;gap:10px;padding:8px 0;color:var(--text-secondary);font-size:14px}.upgrade-pricing{margin-bottom:20px}.upgrade-pricing .price{font-size:32px;font-weight:700;color:var(--text-primary)}.upgrade-pricing .price span{font-size:16px;font-weight:400;color:var(--text-secondary)}.upgrade-pricing .price-note{font-size:13px;color:var(--text-secondary);margin-top:4px}.upgrade-btn{width:100%;padding:14px 24px;background:linear-gradient(135deg,#4a9eff,#6b5ce7);border:none;border-radius:8px;color:#fff;font-size:16px;font-weight:600;cursor:pointer;transition:transform .2s,box-shadow .2s}.upgrade-btn:hover{transform:translateY(-2px);box-shadow:0 4px 20px #4a9eff66}.upgrade-footer{margin-top:16px;font-size:12px;color:var(--text-secondary)}.plan-selector{display:flex;gap:12px;margin-bottom:20px}.plan-option{flex:1;padding:16px 12px;background:var(--bg-light);border:2px solid #444;border-radius:8px;cursor:pointer;text-align:center;transition:border-color .2s,background .2s;position:relative}.plan-option:hover{border-color:#666}.plan-option.selected{border-color:var(--accent);background:#4a9eff1a}.plan-name{display:block;font-size:14px;font-weight:600;color:var(--text-primary);margin-bottom:4px}.plan-price{display:block;font-size:18px;font-weight:700;color:var(--text-primary)}.plan-badge{position:absolute;top:-8px;right:-8px;background:linear-gradient(135deg,#4aff6b,#2ecc71);color:#1a1a1a;font-size:10px;font-weight:600;padding:3px 6px;border-radius:4px}.user-menu{position:relative;margin-left:12px}.btn-sign-in{display:flex;align-items:center;gap:6px;padding:6px 12px;margin-left:12px;background:linear-gradient(135deg,#4a9eff,#6b5ce7);border:none;border-radius:6px;color:#fff;font-size:13px;font-weight:500;cursor:pointer;transition:transform .2s,box-shadow .2s}.btn-sign-in:hover{transform:scale(1.02);box-shadow:0 2px 8px #4a9eff66}.btn-sign-in svg{width:14px;height:14px}.user-avatar{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,#4a9eff,#6b5ce7);border:none;color:#fff;font-size:12px;font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:transform .2s,box-shadow .2s}.user-avatar:hover{transform:scale(1.05);box-shadow:0 2px 8px #4a9eff66}.user-dropdown{position:absolute;top:100%;right:0;margin-top:8px;min-width:220px;background:var(--bg-mid);border:1px solid #444;border-radius:8px;box-shadow:0 4px 20px #0006;opacity:0;visibility:hidden;transform:translateY(-10px);transition:opacity .2s,visibility .2s,transform .2s;z-index:1000}.user-dropdown.open{opacity:1;visibility:visible;transform:translateY(0)}.user-dropdown-header{padding:12px 16px;display:flex;align-items:center;gap:8px}.user-email{font-size:13px;color:var(--text-primary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1}.tier-badge{font-size:10px;font-weight:600;padding:2px 6px;border-radius:4px;text-transform:uppercase}.tier-badge.tier-free{background:#444;color:var(--text-secondary)}.tier-badge.tier-pro{background:linear-gradient(135deg,#ffa64a,#ff6b6b);color:#fff}.user-dropdown-divider{height:1px;background:#444;margin:4px 0}.user-dropdown-item{display:flex;align-items:center;gap:10px;width:100%;padding:10px 16px;background:none;border:none;color:var(--text-primary);font-size:13px;cursor:pointer;text-align:left;transition:background .15s}.user-dropdown-item:hover{background:#ffffff0d}.user-dropdown-item svg{opacity:.7}.user-dropdown-item-danger{color:#ff6b6b}.user-dropdown-item-danger:hover{background:#ff6b6b1a}.settings-modal{max-width:400px}.settings-section{margin-bottom:20px}.settings-section h3{font-size:14px;color:var(--text-secondary);margin-bottom:12px;text-transform:uppercase;letter-spacing:.5px}.settings-row{display:flex;align-items:center;justify-content:space-between;padding:8px 0;color:var(--text-primary);font-size:14px}.settings-row input[type=range]{width:120px}.settings-row input[type=checkbox]{width:18px;height:18px}.sidebar{grid-area:sidebar;background:var(--bg-mid);border-right:1px solid #333;display:flex;flex-direction:column;width:var(--sidebar-width);transition:width .2s ease;overflow:hidden}.sidebar.collapsed{width:var(--sidebar-collapsed-width)}.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:8px;border-bottom:1px solid #333;min-height:40px}.sidebar-collapse-btn{width:32px;height:32px;background:transparent;border:1px solid #444;border-radius:4px;color:var(--text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .15s}.sidebar-collapse-btn:hover{background:var(--bg-light);color:var(--text-primary)}.sidebar.collapsed .sidebar-collapse-btn{transform:rotate(180deg)}.sidebar-content{flex:1;overflow-y:auto;overflow-x:hidden}.sidebar.collapsed .sidebar-content{display:none}.sidebar-section{border-bottom:1px solid #333}.sidebar-section-header{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;font-size:11px;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;cursor:pointer;-webkit-user-select:none;user-select:none}.sidebar-section-header:hover{background:#ffffff08}.sidebar-section-chevron{transition:transform .2s}.sidebar-section.collapsed .sidebar-section-chevron{transform:rotate(-90deg)}.sidebar-section.collapsed .sidebar-section-items{display:none}.sidebar-section-items{padding:4px 0}.sidebar-item{display:flex;align-items:center;gap:10px;width:100%;padding:8px 12px;background:none;border:none;color:var(--text-primary);font-size:13px;cursor:pointer;text-align:left;transition:background .15s}.sidebar-item:hover{background:#ffffff0d}.sidebar-item svg{width:16px;height:16px;opacity:.7;flex-shrink:0}.sidebar-item.pro-locked{opacity:.5}.sidebar-item.pro-locked:hover{opacity:.7}.sidebar-item .lock-badge{margin-left:auto;background:#ffa64a;color:#1a1a1a;font-size:9px;font-weight:600;padding:2px 5px;border-radius:3px}@media(max-width:767px){#app{grid-template-rows:var(--mobile-top-bar-height) 1fr var(--mobile-tab-bar-height);grid-template-columns:1fr;grid-template-areas:"topbar" "main" "tabbar"}#sidebar{position:fixed;top:0;left:0;width:280px;height:100%;z-index:1000;transform:translate(-100%);transition:transform .3s ease}#sidebar.drawer-open{transform:translate(0)}.mobile-drawer-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;z-index:999;opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s}.mobile-drawer-overlay.open{opacity:1;visibility:visible}#timeline,#toolbar,#panel-resizer,#app-footer{display:none}#bottom-row{grid-area:main;flex-direction:column}#mixer-panel{display:none}.mobile-tab-bar{grid-area:tabbar;display:flex;background:var(--bg-mid);border-top:1px solid #333}.mobile-tab{flex:1;padding:12px;background:none;border:none;color:var(--text-secondary);font-size:14px;cursor:pointer;transition:color .2s,background .2s}.mobile-tab.active{color:var(--accent);background:#4a9eff1a}.desktop-only{display:none!important}#top-bar{padding:0 8px;gap:8px}.mobile-hamburger{width:40px;height:40px;background:none;border:none;color:var(--text-primary);cursor:pointer;display:flex;align-items:center;justify-content:center;padding:0}.mobile-hamburger:hover{background:var(--bg-light);border-radius:4px}.mobile-transport{display:flex;gap:4px}.mobile-transport button{width:36px;height:36px;padding:0;font-size:16px}.mobile-tempo{display:flex;align-items:center;gap:4px;font-size:12px;color:var(--text-secondary)}.mobile-tempo input{width:50px;padding:4px;font-size:12px}.mobile-project-name{flex:1;min-width:0}.mobile-project-name input{width:100%;background:transparent;border:none;color:var(--text-primary);font-size:14px;text-align:center;text-overflow:ellipsis}}@media(min-width:768px){.mobile-only{display:none!important}.mobile-tab-bar,.mobile-drawer-overlay{display:none}}.mobile-bar-indicator{display:none}@media(max-width:767px){.mobile-bar-indicator{display:flex;align-items:center;justify-content:center;gap:16px;padding:8px;background:var(--bg-mid);border-bottom:1px solid #333;transition:transform .1s}.bar-nav-btn{width:32px;height:32px;padding:0;background:var(--bg-light);border:1px solid #444;border-radius:4px;color:var(--text-primary);cursor:pointer;font-size:14px}.bar-nav-btn:hover:not(:disabled){background:#3a3a3a}.bar-nav-btn:disabled{opacity:.3;cursor:not-allowed}.bar-indicator-text{font-size:14px;color:var(--text-primary);min-width:100px;text-align:center}#mixer-panel.mixer-panel-mobile{flex-direction:column;padding:8px;gap:8px;overflow-y:auto;border-left:none;border-top:1px solid #333}.mixer-panel-mobile .mixer-strip{width:100%;min-width:unset;flex-direction:row;min-height:unset;padding:8px;gap:12px;align-items:center}.mixer-panel-mobile .mixer-strip-header{flex-direction:column;align-items:stretch;width:80px;flex-shrink:0}.mixer-panel-mobile .mixer-knobs{flex:1;justify-content:flex-start;gap:24px}.mixer-panel-mobile .mixer-effects-btn{width:auto;margin:0;padding:6px 12px}}