*{margin:0;padding:0;box-sizing:border-box}
:root{--primary:#ff6b9d;--secondary:#c44cff;--accent:#00d4ff;--bg:#0a0a0f;--bg-elevated:#141419;--bg-card:rgba(255,255,255,0.04);--border:rgba(255,255,255,0.08);--text:#fff;--text-secondary:rgba(255,255,255,0.7);--text-muted:rgba(255,255,255,0.4);--sidebar-width:280px;--sidebar-collapsed:72px;--player-height:80px;--topbar-height:64px}
[data-theme="ocean"]{--primary:#00d4ff;--secondary:#0066ff}
[data-theme="forest"]{--primary:#00ff87;--secondary:#00c853}
[data-theme="sunset"]{--primary:#ff9500;--secondary:#ff2d55}
html,body{height:100%}
body{font-family:'Inter',sans-serif;background:var(--bg);color:var(--text);overflow:hidden}
.hidden{display:none!important}
.app{display:grid;grid-template-columns:var(--sidebar-width) 1fr;grid-template-rows:1fr var(--player-height);height:100vh;transition:grid-template-columns 0.3s ease}
.app.sidebar-collapsed{grid-template-columns:var(--sidebar-collapsed) 1fr}

/* Background */
.bg-effects{position:fixed;inset:0;z-index:0;pointer-events:none}
.gradient-orb{position:absolute;border-radius:50%;filter:blur(120px);opacity:0.3}
.orb-1{width:600px;height:600px;background:var(--primary);top:-200px;left:-100px}
.orb-2{width:500px;height:500px;background:var(--secondary);bottom:-100px;right:-100px}
.noise-overlay{position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");opacity:0.03}

/* Sidebar */
.sidebar{grid-row:1/3;background:var(--bg);border-right:1px solid var(--border);display:flex;flex-direction:column;z-index:10;position:relative;overflow:hidden}
.sidebar-header{padding:16px;display:flex;align-items:center;justify-content:center;min-height:60px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text)}
.logo .material-icons-round{font-size:28px;color:var(--primary)}
.logo-text{font-size:1.2rem;font-weight:700;white-space:nowrap}
.sidebar-collapsed .logo-text{display:none}
.sidebar-toggle{position:absolute;top:20px;right:16px;width:32px;height:32px;border-radius:50%;background:var(--bg-elevated);border:1px solid var(--border);color:var(--text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all 0.2s;z-index:1000}
.sidebar-toggle:hover{color:var(--text);background:var(--primary);border-color:var(--primary)}
.sidebar-nav{padding:8px}
.nav-item{display:flex;align-items:center;gap:16px;padding:12px 16px;border-radius:8px;color:var(--text-secondary);text-decoration:none;font-weight:500;transition:all 0.2s}
.nav-item:hover{color:var(--text);background:var(--bg-card)}
.nav-item.active{color:var(--text);background:var(--bg-card)}
.nav-item .material-icons-round{font-size:24px;flex-shrink:0}
.nav-text{white-space:nowrap}
.sidebar-collapsed .nav-text{display:none}
.sidebar-collapsed .nav-item{justify-content:center;padding:12px}

/* Nav Dropdown */
.nav-dropdown{position:relative}
.nav-dropdown-btn{width:100%;display:flex;align-items:center;gap:16px;padding:12px 16px;border-radius:8px;color:var(--text-secondary);background:transparent;border:none;font-weight:500;transition:all 0.2s;cursor:pointer;font-size:1rem;font-family:inherit}
.nav-dropdown-btn:hover{color:var(--text);background:var(--bg-card)}
.nav-dropdown-btn .material-icons-round{font-size:24px;flex-shrink:0}
.nav-dropdown-btn .dropdown-arrow{margin-left:auto;transition:transform 0.3s}
.nav-dropdown.active .dropdown-arrow{transform:rotate(180deg)}
.nav-dropdown-content{max-height:0;overflow:hidden;transition:max-height 0.3s ease;padding-left:16px}
.nav-dropdown.active .nav-dropdown-content{max-height:300px}
.sidebar-collapsed .nav-dropdown-btn{justify-content:center;padding:12px}
.sidebar-collapsed .dropdown-arrow{display:none}
.sidebar-collapsed .nav-dropdown-content{display:none}

/* Library */
.sidebar-library{flex:1;display:flex;flex-direction:column;padding:12px;border-top:1px solid var(--border);margin-top:8px;overflow:hidden;min-height:0}
.library-header{display:flex;align-items:center;justify-content:space-between;padding:8px 8px 16px;flex-shrink:0}
.library-title{display:flex;align-items:center;gap:10px;font-weight:600;color:var(--text-secondary)}
.library-title .material-icons-round{font-size:22px;flex-shrink:0}
.lib-text{white-space:nowrap}
.sidebar-collapsed .lib-text{display:none}
.sidebar-collapsed .library-header{justify-content:center;padding:8px 0}
.library-add{width:32px;height:32px;border-radius:50%;background:transparent;border:none;color:var(--text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all 0.2s;flex-shrink:0}
.library-add:hover{color:var(--text);background:var(--bg-card)}
.sidebar-collapsed .library-add{display:none}
.library-list{flex:1;overflow-y:auto;overflow-x:hidden;display:flex;flex-direction:column;gap:4px;min-height:0}
.library-item{display:flex;align-items:center;gap:12px;padding:8px;border-radius:8px;transition:all 0.2s;position:relative;user-select:none;min-width:0}
.library-item:hover{background:var(--bg-card)}
.library-item.active{background:var(--bg-card)}
.library-item.dragging{opacity:0.5;background:var(--primary);}
.library-item-art{width:48px;height:48px;min-width:48px;border-radius:6px;display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0;overflow:hidden}
.library-item-art img{width:100%;height:100%;object-fit:cover}
.library-item-info{flex:1;min-width:0;overflow:hidden}
.sidebar-collapsed .library-item{padding:4px;justify-content:center}
.sidebar-collapsed .library-item-info{display:none}
.sidebar-collapsed .library-item-art{width:40px;height:40px;min-width:40px}
.library-item-name{font-size:0.9rem;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.library-item-meta{font-size:0.75rem;color:var(--text-muted);display:flex;align-items:center;gap:4px}
.library-item-meta .material-icons-round{font-size:14px}

/* Main Wrapper */
.main-wrapper{display:flex;flex-direction:column;overflow:hidden;position:relative;z-index:1}

/* Topbar */
.topbar{height:var(--topbar-height);padding:0 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;background:rgba(10,10,15,0.7);backdrop-filter:blur(20px);position:sticky;top:0;z-index:10}
.topbar-left{display:flex;align-items:center;gap:12px}
.topbar-btn{width:40px;height:40px;border-radius:50%;background:rgba(0,0,0,0.5);border:none;color:var(--text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all 0.2s;flex-shrink:0;text-decoration:none}
.topbar-btn .material-icons-round{font-size:22px}
.topbar-btn:hover{color:var(--text);background:rgba(255,255,255,0.1)}
.search-box{display:flex;align-items:center;gap:10px;background:var(--bg-card);border:1px solid var(--border);border-radius:50px;padding:8px 16px;width:350px;transition:all 0.2s}
.search-box:focus-within{border-color:var(--primary);background:rgba(255,255,255,0.06)}
.search-box .material-icons-round{color:var(--text-muted);font-size:20px}
.search-box input{flex:1;background:none;border:none;outline:none;color:var(--text);font-size:0.9rem}
.search-box input::placeholder{color:var(--text-muted)}
.topbar-right{display:flex;align-items:center;gap:16px}
.theme-dots{display:flex;gap:6px}
.theme-dot{width:16px;height:16px;border-radius:50%;border:2px solid transparent;cursor:pointer;transition:all 0.2s}
.theme-dot[data-theme="default"]{background:linear-gradient(135deg,#ff6b9d,#c44cff)}
.theme-dot[data-theme="ocean"]{background:linear-gradient(135deg,#00d4ff,#0066ff)}
.theme-dot[data-theme="forest"]{background:linear-gradient(135deg,#00ff87,#00c853)}
.theme-dot[data-theme="sunset"]{background:linear-gradient(135deg,#ff9500,#ff2d55)}
.theme-dot:hover{transform:scale(1.2)}
.theme-dot.active{border-color:#fff}
.login-btn{background:var(--primary);border:none;border-radius:50px;padding:8px 20px;color:#fff;font-weight:600;font-size:0.85rem;cursor:pointer;transition:all 0.2s}
.login-btn:hover{transform:scale(1.05);box-shadow:0 4px 20px rgba(255,107,157,0.4)}
.user-btn{display:flex;align-items:center;gap:8px;background:var(--bg-card);border:1px solid var(--border);border-radius:50px;padding:4px 12px 4px 4px;cursor:pointer;transition:all 0.2s}
.user-btn:hover{background:rgba(255,255,255,0.08)}
.user-avatar{width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:0.8rem}
.user-btn span:last-child{font-size:0.85rem;font-weight:500;color:var(--text)}

/* Main Content */
.main-content{flex:1;overflow-y:auto;padding:24px;padding-bottom:calc(var(--player-height) + 24px)}

/* Home Page */
.home-hero{text-align:center;padding:40px 0 60px}
.home-hero h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:800;margin-bottom:12px}
.text-gradient{background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.home-hero p{color:var(--text-secondary);font-size:1.1rem}

/* Section */
.section{margin-bottom:40px}
.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.section-title{font-size:1.4rem;font-weight:700;display:flex;align-items:center;gap:10px}
.section-title .material-icons-round{color:var(--primary)}

/* Grid */
.songs-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:20px}

/* Song Card */
.song-card{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;overflow:hidden;cursor:pointer;transition:all 0.3s}
.song-card:hover{transform:translateY(-4px);border-color:rgba(255,255,255,0.15);box-shadow:0 20px 40px rgba(0,0,0,0.3)}
.song-card.playing{border-color:var(--primary);box-shadow:0 0 30px rgba(255,107,157,0.2)}
.card-art{position:relative;aspect-ratio:1;}
.card-art img{width:100%;height:100%;object-fit:cover}
.card-play{position:absolute;inset:0;background:rgba(0,0,0,0.5);display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity 0.2s; height: 98%;}
.song-card:hover .card-play{opacity:1}
.card-play-btn{width:48px;height:48px;border-radius:50%;background:var(--primary);display:flex;align-items:center;justify-content:center;transform:scale(0.8);transition:transform 0.2s}
.song-card:hover .card-play-btn{transform:scale(1)}
.card-play-btn .material-icons-round{font-size:28px}
.card-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,0.8);padding:3px 6px;border-radius:4px;font-size:0.7rem}
.card-body{padding:12px}
.card-title{font-size:0.9rem;font-weight:600;margin-bottom:4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-artist{font-size:0.8rem;color:var(--text-muted)}
.card-menu{position:absolute;top:8px;right:8px;width:32px;height:32px;border-radius:50%;background:rgba(0,0,0,0.7);border:none;color:var(--text);cursor:pointer;display:none;align-items:center;justify-content:center}
.song-card:hover .card-menu{display:flex}

/* Playlist Page */
.playlist-header{display:flex;gap:24px;padding:24px;background:linear-gradient(180deg,rgba(255,255,255,0.05) 0%,transparent 100%);border-radius:12px;margin-bottom:24px}
.playlist-cover{width:200px;height:200px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:64px;flex-shrink:0;box-shadow:0 20px 50px rgba(0,0,0,0.4)}
.playlist-info{flex:1;display:flex;flex-direction:column;justify-content:flex-end}
.playlist-type{font-size:0.8rem;font-weight:500;text-transform:uppercase;margin-bottom:8px}
.playlist-name{font-size:clamp(1.5rem,4vw,3rem);font-weight:800;margin-bottom:12px}
.playlist-meta{display:flex;align-items:center;gap:8px;color:var(--text-secondary);font-size:0.9rem;flex-wrap:wrap}
.playlist-owner-link{display:inline-flex;align-items:center;gap:6px;color:var(--text);font-weight:500;text-decoration:none}
.playlist-owner-link:hover{text-decoration:underline}
.playlist-owner-avatar{width:24px;height:24px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:0.7rem;font-weight:700;overflow:hidden}
.playlist-actions{display:flex;gap:12px;margin-top:20px}
.playlist-play{width:48px;height:48px;border-radius:50%;background:var(--primary);border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all 0.2s}
.playlist-play:hover{transform:scale(1.05);box-shadow:0 8px 25px rgba(255,107,157,0.4)}
.playlist-play .material-icons-round{font-size:28px}
.playlist-btn{height:40px;padding:0 20px;border-radius:50px;background:transparent;border:1px solid var(--border);color:var(--text);font-weight:500;cursor:pointer;display:flex;align-items:center;gap:8px;transition:all 0.2s}
.playlist-btn:hover{background:rgba(255,255,255,0.1);border-color:var(--text)}

/* Song List */
.song-list{display:flex;flex-direction:column}
.song-list-search-container{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.song-list-search-btn{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;background:var(--bg-card);border:1px solid var(--border);color:var(--text-secondary);cursor:pointer;transition:all 0.2s}
.song-list-search-btn:hover{color:var(--text);border-color:var(--primary);background:var(--primary)}
.song-list-search{display:flex;align-items:center;gap:10px;background:var(--bg-card);border:1px solid var(--border);border-radius:8px;padding:10px 14px;flex:1;max-width:400px}
.song-list-search .material-icons-round{color:var(--text-muted);font-size:18px;flex-shrink:0}
.song-list-search input{flex:1;background:none;border:none;outline:none;color:var(--text);font-size:0.85rem}
.search-close-btn{display:flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:50%;background:transparent;border:none;color:var(--text-muted);cursor:pointer;transition:all 0.2s;flex-shrink:0}
.search-close-btn:hover{color:var(--text);background:var(--bg-elevated)}
.song-list-header{display:grid;grid-template-columns:40px 1fr 1fr 80px 80px;gap:16px;padding:8px 16px;border-bottom:1px solid var(--border);color:var(--text-muted);font-size:0.8rem;font-weight:500}
.song-row{display:grid;grid-template-columns:40px 1fr 1fr 80px 80px;gap:16px;padding:12px 16px;border-radius:8px;align-items:center;transition:all 0.2s;user-select:none}
.song-row:hover{background:var(--bg-card)}
.song-row.playing{background:rgba(255,107,157,0.1)}
.song-row.dragging{opacity:0.5;background:var(--primary)}
.song-num{color:var(--text-muted);font-size:0.9rem;text-align:center}
.song-row:hover .song-num{display:none}
.song-row .play-icon{display:none;color:var(--text);cursor:pointer}
.song-row:hover .play-icon{display:block}
.song-main{display:flex;align-items:center;gap:12px;min-width:0}
.song-thumb{width:40px;height:40px;border-radius:4px;object-fit:cover}
.song-details{min-width:0}
.song-name{font-size:0.9rem;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.song-row.playing .song-name{color:var(--primary)}
.song-row.selected{background:rgba(255,107,157,0.15);border-left:3px solid var(--primary)}
.song-channel{font-size:0.8rem;color:var(--text-muted)}
.song-duration{color:var(--text-muted);font-size:0.85rem}
.song-actions{display:flex;gap:4px;justify-content:flex-end;position:relative}
.song-actions-dropdown{position:relative}
.song-action-menu-btn{width:32px;height:32px;border-radius:50%;background:transparent;border:none;color:var(--text-muted);cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;transition:all 0.2s}
.song-row:hover .song-action-menu-btn{opacity:1}
.song-action-menu-btn:hover{color:var(--text);background:rgba(255,255,255,0.1)}
.song-action-menu{position:absolute;right:0;top:100%;margin-top:4px;background:var(--bg-elevated);border:1px solid var(--border);border-radius:8px;box-shadow:0 8px 24px rgba(0,0,0,0.4);min-width:180px;z-index:1000;opacity:0;visibility:hidden;transform:translateY(-10px);transition:all 0.2s;overflow:hidden}
.song-action-menu.active{opacity:1;visibility:visible;transform:translateY(0)}
.song-action-item{width:100%;display:flex;align-items:center;gap:12px;padding:10px 16px;background:transparent;border:none;color:var(--text-secondary);cursor:pointer;transition:all 0.2s;font-size:0.9rem;text-align:left}
.song-action-item:hover{background:var(--bg-card);color:var(--text)}
.song-action-item.active{color:#ff4757}
.song-action-item.active .material-icons-round{color:#ff4757}
.song-action-item.delete{color:#ff4757}
.song-action-item.delete:hover{background:rgba(255,71,87,0.1)}
.song-action-item .material-icons-round{font-size:20px}

/* Selection Bar */
.selection-bar{display:none;align-items:center;justify-content:space-between;background:var(--primary);color:#fff;padding:12px 20px;border-radius:8px;margin-bottom:16px;animation:slideDown 0.3s ease}
.selection-info{display:flex;align-items:center;gap:10px;font-weight:600}
.selection-actions{display:flex;gap:8px}
.selection-btn{display:flex;align-items:center;gap:6px;padding:8px 16px;border-radius:6px;background:rgba(255,255,255,0.2);border:none;color:#fff;cursor:pointer;transition:all 0.2s;font-weight:500}
.selection-btn:hover{background:rgba(255,255,255,0.3)}
.selection-btn.delete{background:rgba(255,71,87,0.9)}
.selection-btn.delete:hover{background:rgba(255,71,87,1)}
@keyframes slideDown{from{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}

/* Profile Page */
.profile-header{display:flex;align-items:flex-end;gap:24px;padding:40px 0}
.profile-avatar-large{width:180px;height:180px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:72px;font-weight:700;box-shadow:0 20px 50px rgba(0,0,0,0.4)}
.profile-info h1{font-size:clamp(2rem,5vw,4rem);font-weight:800;margin-bottom:8px}
.profile-info p{color:var(--text-secondary)}
.profile-playlists{margin-top:40px}

/* Player Bar */
.player-bar{grid-column:1/3;background:var(--bg-elevated);border-top:1px solid var(--border);position:relative;z-index:100}
.player-progress{position:absolute;top:-6px;left:0;right:0;height:12px;background:transparent;cursor:pointer;display:flex;align-items:center;padding:3px 0}
.player-progress-track{width:100%;height:4px;background:rgba(255,255,255,0.1);border-radius:2px;position:relative}
.player-progress-fill{height:100%;background:var(--primary);width:0;transition:width 0.1s;border-radius:2px;position:relative}
.player-progress-fill::after{content:'';position:absolute;right:-6px;top:50%;transform:translateY(-50%);width:12px;height:12px;background:var(--primary);border-radius:50%;opacity:0;transition:opacity 0.2s;box-shadow:0 2px 8px rgba(255,107,157,0.4)}
.player-progress:hover .player-progress-fill::after{opacity:1}
.player-progress:hover .player-progress-track{background:rgba(255,255,255,0.2)}
.player-content{height:100%;display:flex;align-items:center;justify-content:space-between;padding:12px}
.player-left{display:flex;align-items:center;gap:12px;flex:1;min-width:0}
.player-art{width:56px;height:56px;border-radius:6px;overflow:hidden;background:var(--bg-card);flex-shrink:0}
.player-art img{width:100%;height:100%;object-fit:cover}
.player-info{min-width:0}
.player-title{display:block;font-size:0.9rem;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.player-artist{display:block;font-size:0.8rem;color:var(--text-muted)}
.player-fav{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:8px;transition:all 0.2s}
.player-fav:hover,.player-fav.active{color:#ff4757}
.player-center{display:flex;align-items:center;gap:16px}
.ctrl-btn{width:36px;height:36px;border-radius:50%;background:transparent;border:none;color:var(--text);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all 0.2s}
.ctrl-btn:hover{background:rgba(255,255,255,0.1);transform:scale(1.1)}
.ctrl-btn .material-icons-round{font-size:24px}
.ctrl-play{width:40px;height:40px;background:var(--text)!important;color:var(--bg)!important}
.ctrl-play:hover{transform:scale(1.1)}
.ctrl-repeat{color:var(--text-muted)}
.ctrl-repeat.active{color:var(--primary)}
.player-time{font-size:0.75rem;color:var(--text-muted)}
.player-right{display:flex;align-items:center;gap:8px;flex:1;justify-content:flex-end}
.vol-btn{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:8px}
.vol-btn:hover{color:var(--text)}
.vol-slider{width:100px;height:4px;background:rgba(255,255,255,0.1);border-radius:4px;cursor:pointer}
.vol-fill{height:100%;background:var(--text);border-radius:4px;width:100%}

/* Modals */
.modal-backdrop{position:fixed;inset:0;z-index:200;background:rgba(0,0,0,0.8);backdrop-filter:blur(8px);display:none;align-items:center;justify-content:center;padding:20px}
.modal-backdrop.active{display:flex}
.modal{background:var(--bg-elevated);border:1px solid var(--border);border-radius:16px;position:relative;animation:modalIn 0.3s ease}
@keyframes modalIn{from{opacity:0;transform:scale(0.95)}}
.modal-close{position:absolute;top:12px;right:12px;width:32px;height:32px;border-radius:50%;background:rgba(255,255,255,0.1);border:none;color:var(--text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;z-index:10}
.modal-close:hover{background:rgba(255,255,255,0.2);color:var(--text)}
.auth-modal{display:flex;width:700px;max-width:100%;overflow:hidden}
.modal-visual{flex:1;background:linear-gradient(135deg,var(--primary),var(--secondary));padding:40px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}
.modal-visual .material-icons-round{font-size:56px;margin-bottom:16px;opacity:0.9}
.modal-visual h3{font-size:1.4rem;margin-bottom:8px}
.modal-visual p{opacity:0.9;font-size:0.9rem}
.modal-form{flex:1;padding:32px;display:flex;flex-direction:column}
.auth-tabs{display:flex;gap:8px;margin-bottom:24px}
.auth-tab{flex:1;padding:10px;border-radius:8px;background:var(--bg-card);border:1px solid var(--border);color:var(--text-secondary);font-weight:600;cursor:pointer;transition:all 0.2s}
.auth-tab.active{background:var(--primary);border-color:var(--primary);color:#fff}
.input-group{display:flex;align-items:center;gap:12px;background:var(--bg-card);border:1px solid var(--border);border-radius:10px;padding:12px 16px;margin-bottom:12px}
.input-group:focus-within{border-color:var(--primary)}
.input-group .material-icons-round{color:var(--text-muted);font-size:20px}
.input-group input{flex:1;background:none;border:none;outline:none;color:var(--text);font-size:0.9rem}
.auth-submit{width:100%;padding:14px;border-radius:10px;background:var(--primary);border:none;color:#fff;font-weight:700;font-size:0.95rem;cursor:pointer;margin-top:8px;transition:all 0.2s}
.auth-submit:hover{box-shadow:0 8px 25px rgba(255,107,157,0.4)}
.auth-error{color:#ff4757;font-size:0.85rem;text-align:center;margin-top:12px;min-height:20px}
.small-modal{width:400px;max-width:100%;padding:24px}
.small-modal h3{font-size:1.2rem;margin-bottom:20px;text-align:center}
.modal-search{display:flex;align-items:center;gap:10px;background:var(--bg-card);border:1px solid var(--border);border-radius:8px;padding:10px 14px;margin-bottom:16px}
.modal-search .material-icons-round{color:var(--text-muted);font-size:18px}
.modal-search input{flex:1;background:none;border:none;outline:none;color:var(--text);font-size:0.9rem}
.checkbox-label{display:flex;align-items:center;gap:10px;font-size:0.9rem;color:var(--text-secondary);margin-bottom:16px;cursor:pointer}
.checkbox-label input{width:18px;height:18px;accent-color:var(--primary)}
.playlist-select-list{max-height:300px;overflow-y:auto}
.playlist-select-item{display:flex;align-items:center;gap:12px;padding:12px;border-radius:8px;cursor:pointer;transition:background 0.2s}
.playlist-select-item:hover{background:var(--bg-card)}
.playlist-select-item .material-icons-round{font-size:20px;color:var(--primary)}
.profile-card{text-align:center;padding:20px 0}
.profile-avatar{width:80px;height:80px;border-radius:50%;margin:0 auto 16px;display:flex;align-items:center;justify-content:center;font-size:2rem;font-weight:700}
.profile-card h3{font-size:1.2rem;margin-bottom:4px}
.profile-card p{color:var(--text-muted);font-size:0.9rem;margin-bottom:20px}
.profile-action{width:100%;padding:12px;border-radius:8px;background:var(--bg-card);border:1px solid var(--border);color:var(--text);font-size:0.9rem;cursor:pointer;margin-bottom:8px;transition:all 0.2s}
.profile-action:hover{background:rgba(255,255,255,0.08)}
.profile-action.danger{color:#ff4757}

/* Avatar/Cover Upload */
.avatar-upload,.cover-upload{position:relative;width:100px;height:100px;margin:0 auto 20px}
.avatar-preview{width:100px;height:100px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:2.5rem;font-weight:700;background:var(--primary);overflow:hidden}
.avatar-preview img{width:100%;height:100%;object-fit:cover}
.cover-preview{width:100px;height:100px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:var(--primary);overflow:hidden}
.cover-preview img{width:100%;height:100%;object-fit:cover}
.cover-preview .material-icons-round{font-size:40px;opacity:0.8}
.avatar-btn,.cover-btn{position:absolute;bottom:0;right:0;width:32px;height:32px;border-radius:50%;background:var(--bg-elevated);border:2px solid var(--bg);color:var(--text);cursor:pointer;display:flex;align-items:center;justify-content:center}
.avatar-btn:hover,.cover-btn:hover{background:var(--primary)}

/* Shortcuts Modal */
.shortcuts-modal{width:500px;max-width:100%;padding:24px}
.shortcuts-modal h3{display:flex;align-items:center;gap:10px;margin-bottom:20px}
.shortcuts-modal h3 .material-icons-round{color:var(--primary)}
.shortcuts-list{display:flex;flex-direction:column;gap:8px;max-height:400px;overflow-y:auto}
.shortcut-item{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:var(--bg-card);border:1px solid var(--border);border-radius:8px}
.shortcut-item:hover{border-color:var(--primary)}
.shortcut-name{font-size:0.9rem;color:var(--text)}
.shortcut-key{display:flex;align-items:center;gap:8px}
.shortcut-key kbd{background:var(--bg-elevated);border:1px solid var(--border);border-radius:6px;padding:6px 12px;font-family:monospace;font-size:0.85rem;min-width:40px;text-align:center;cursor:pointer;transition:all 0.2s}
.shortcut-key kbd:hover{border-color:var(--primary);color:var(--primary)}
.shortcut-key kbd.recording{border-color:var(--primary);background:rgba(255,107,157,0.1);animation:pulse 1s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:0.5}}

/* Loading */
.loading{position:fixed;inset:0;z-index:300;background:rgba(10,10,15,0.9);display:none;align-items:center;justify-content:center}
.loading.active{display:flex}
.spinner{width:40px;height:40px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* Scrollbar */
::-webkit-scrollbar{width:8px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,0.1);border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,0.2)}

/* Mobile Menu Button */
.mobile-menu-btn{display:none;width:40px;height:40px;border-radius:8px;background:var(--bg-card);border:1px solid var(--border);color:var(--text);cursor:pointer;align-items:center;justify-content:center;flex-shrink:0}
.mobile-menu-btn:hover{background:rgba(255,255,255,0.1)}

/* Mobile Overlay */
.sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.6);z-index:99;opacity:0;transition:opacity 0.3s}
.sidebar-overlay.active{opacity:1}

/* Responsive */
@media(max-width:900px){
    .app{grid-template-columns:1fr!important}
    .app.sidebar-collapsed{grid-template-columns:1fr!important}
    .sidebar{position:fixed;left:0;top:0;bottom:0;width:280px;transform:translateX(-100%);transition:transform 0.3s ease;z-index:100}
    .sidebar.mobile-open{transform:translateX(0)}
    .sidebar-overlay{display:block;pointer-events:none}
    .sidebar-overlay.active{pointer-events:auto}
    .sidebar-toggle{display:none}
    .mobile-menu-btn{display:flex}
    .modal-visual{display:none}
    .auth-modal{width:100%;max-width:400px}
    .player-bar{grid-column:1;position:fixed;bottom:0;left:0;right:0}
    .main-content{padding-bottom:100px}
    .playlist-header{flex-direction:column;align-items:center;text-align:center}
    .playlist-cover{width:160px;height:160px}
    .playlist-info{align-items:center}
    .profile-header{flex-direction:column;align-items:center;text-align:center;padding:20px 0}
    .profile-avatar-large{width:120px;height:120px;font-size:48px}
}
@media(max-width:600px){
    .topbar{padding:0 12px;gap:8px}
    .topbar-left{gap:8px}
    .topbar-btn{display:none}
    .search-box{flex:1;width:auto;min-width:0;padding:6px 12px}
    .topbar-right{gap:8px}
    .theme-dots{display:none}
    .shortcuts-btn{display:none}
    .player-bar{height:auto}
    .player-content{padding:8px 12px;flex-wrap:wrap;gap:8px}
    .player-left{gap:8px;flex:1;min-width:0}
    .player-art{width:44px;height:44px}
    .player-info{flex:1;min-width:0;max-width:none}
    .player-fav{display:none}
    .player-center{order:3;width:100%;justify-content:center;gap:12px;padding-top:4px;border-top:1px solid var(--border)}
    .ctrl-btn{width:36px;height:36px}
    .ctrl-btn .material-icons-round{font-size:22px}
    .ctrl-play{width:40px;height:40px}
    .player-time{font-size:0.7rem}
    .player-right{display:none}
    .main-content{padding:12px;padding-bottom:140px}
    .home-hero{padding:16px 0 24px}
    .home-hero h1{font-size:1.6rem}
    .home-hero p{font-size:0.9rem}
    .songs-grid{grid-template-columns:repeat(2,1fr);gap:10px}
    .song-card{border-radius:8px}
    .card-body{padding:8px}
    .card-title{font-size:0.8rem}
    .card-artist{font-size:0.7rem}
    .song-list-header{display:none}
    .song-row{grid-template-columns:auto 1fr auto;padding:10px 12px;gap:12px}
    .song-row>div:first-child{display:flex!important;width:32px}
    .song-row .song-num{display:none!important}
    .song-row .play-icon{display:flex!important;opacity:1;font-size:20px}
    .song-channel,.song-duration{display:none}
    .song-main{gap:10px}
    .song-thumb{width:44px;height:44px}
    .song-name{font-size:0.85rem}
    .song-actions{opacity:1;gap:0}
    .song-action{width:36px;height:36px;opacity:1}
    .section-title{font-size:1.1rem}
    .small-modal,.shortcuts-modal{width:calc(100% - 32px);padding:16px}
    .playlist-header{padding:16px;gap:16px}
    .playlist-cover{width:120px;height:120px}
    .playlist-name{font-size:1.4rem}
    .playlist-meta{font-size:0.8rem;flex-wrap:wrap;justify-content:center}
    .playlist-actions{margin-top:12px}
}

/* Online Users */
.online-users-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.online-user-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    cursor: pointer;
    transition: all 0.2s;
}

.online-user-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

/* Badge Styles */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-online {
    background: rgba(34, 197, 94, 0.2);
    color: #22c55e;
}

.badge-offline {
    background: rgba(156, 163, 175, 0.2);
    color: #9ca3af;
}

.badge-admin {
    background: rgba(168, 85, 247, 0.2);
    color: #a855f7;
}

/* Current Song Card */
.current-song-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 20px;
    margin-bottom: 24px;
}

/* Toggle Switch */
.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 26px;
    flex-shrink: 0;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255,255,255,0.1);
    transition: 0.3s;
    border-radius: 26px;
    border: 1px solid var(--border);
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.3s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--primary);
    border-color: var(--primary);
}

input:checked + .slider:before {
    transform: translateX(24px);
}

.slider:hover {
    background-color: rgba(255,255,255,0.15);
}

input:checked + .slider:hover {
    background-color: #ff5a8f;
}

/* Responsive */
@media (max-width: 768px) {
    .online-users-grid {
        grid-template-columns: 1fr;
    }
}

/* Topbar Dropdown */
.topbar-dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: linear-gradient(145deg, rgba(18,18,24,0.98), rgba(12,12,18,0.98));
    backdrop-filter: blur(24px);
    border: 1px solid rgba(255,107,157,0.15);
    border-radius: 16px;
    padding: 8px;
    min-width: 220px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.6), 0 0 0 1px rgba(255,255,255,0.05) inset;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px) scale(0.95);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 9999;
}

.dropdown-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 14px;
    width: 100%;
    padding: 12px 14px;
    background: none;
    border: none;
    border-radius: 10px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.9rem;
    font-weight: 500;
    text-align: left;
    justify-content: flex-start;
    font-family: inherit;
    margin-bottom: 2px;
}

.dropdown-item:last-child {
    margin-bottom: 0;
}

.dropdown-item .material-icons-round {
    font-size: 20px;
    flex-shrink: 0;
    width: 24px;
    text-align: center;
    color: var(--text-muted);
    transition: color 0.2s;
}

.dropdown-item span:not(.material-icons-round):not(.notification-badge) {
    flex: 1;
    white-space: nowrap;
}

.dropdown-item:hover {
    background: linear-gradient(135deg, rgba(255,107,157,0.12), rgba(196,76,255,0.08));
    color: var(--text);
}

.dropdown-item:hover .material-icons-round {
    color: var(--primary);
}

.dropdown-item:active {
    transform: scale(0.98);
}

/* Preview Modal Responsive */
@media (max-width: 768px) {
    .preview-content {
        display: block !important;
    }
    
    .preview-content > div:first-child {
        margin-bottom: 20px !important;
    }
    
    #previewPlayer {
        height: 200px !important;
    }
}

@media (min-width: 769px) {
    .preview-content {
        display: grid !important;
        grid-template-columns: 1fr 1fr !important;
        gap: 24px !important;
    }
}

/* Theme dots in profile modal */
.theme-dots {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.theme-dot {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,0.2);
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
}

.theme-dot[data-theme="default"] { background: linear-gradient(135deg, #ff6b9d, #c44cff); }
.theme-dot[data-theme="ocean"] { background: linear-gradient(135deg, #4cc9ff, #00d4aa); }
.theme-dot[data-theme="forest"] { background: linear-gradient(135deg, #4cff9d, #00aa55); }
.theme-dot[data-theme="sunset"] { background: linear-gradient(135deg, #ff9a5c, #ff6b4a); }

.theme-dot:hover {
    transform: scale(1.1);
    border-color: rgba(255,255,255,0.4);
}

.theme-dot.active {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(255,107,157,0.3);
}

.theme-dot.active::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    background: white;
    border-radius: 50%;
    box-shadow: 0 0 4px rgba(0,0,0,0.5);
}

/* Notification Badge */
.notification-badge {
    background: #ff4757;
    color: white;
    border-radius: 10px;
    padding: 2px 6px;
    font-size: 0.7rem;
    font-weight: 600;
    margin-left: auto;
    min-width: 18px;
    text-align: center;
}

.notification-item {
    display: flex;
    gap: 12px;
    padding: 16px;
    border-radius: 12px;
    margin-bottom: 8px;
    transition: all 0.2s;
    cursor: pointer;
}

.notification-item:hover {
    background: rgba(255,255,255,0.05);
}

.notification-item.unread {
    background: rgba(255,107,157,0.05);
    border-left: 3px solid var(--primary);
}

.notification-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.notification-content {
    flex: 1;
    min-width: 0;
}

.notification-title {
    font-weight: 600;
    margin-bottom: 4px;
    font-size: 0.9rem;
}

.notification-message {
    color: var(--text-muted);
    font-size: 0.85rem;
    line-height: 1.4;
}

.notification-time {
    color: var(--text-muted);
    font-size: 0.75rem;
    margin-top: 4px;
}


/* Lyrics Modal */
.lyrics-line {
    padding: 12px 20px;
    margin: 8px 0;
    border-radius: 8px;
    transition: all 0.3s ease;
    opacity: 0.4;
    font-weight: 500;
}

.lyrics-line.active {
    opacity: 1;
    background: rgba(255, 107, 157, 0.15);
    border-left: 4px solid var(--primary);
    padding-left: 16px;
    font-weight: 700;
    font-size: 1.3rem;
    transform: translateX(8px);
}

.lyrics-line.past {
    opacity: 0.6;
}

.lyrics-line:hover {
    opacity: 0.8;
    background: rgba(255, 255, 255, 0.05);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}