:root{--bg: #0b0d12;--bg-elev: #12151d;--bg-hover: #1a1f2b;--border: #232a38;--text: #eef1f6;--text-muted: #8b93a7;--accent: #7c5cff;--accent-hover: #8f74ff;--danger: #ff5d6c;--radius: 12px}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:Segoe UI,PingFang SC,Microsoft YaHei,system-ui,sans-serif;background:var(--bg);color:var(--text)}button{font:inherit;cursor:pointer}input,select,textarea{font:inherit}.app-shell{display:flex;height:100vh}.sidebar{width:220px;flex-shrink:0;display:flex;flex-direction:column;padding:20px 14px;background:var(--bg-elev);border-right:1px solid var(--border)}.brand{display:flex;flex-direction:column;gap:2px;padding:4px 10px 20px}.brand-logo{font-size:22px;font-weight:700;background:linear-gradient(90deg,var(--accent),var(--accent-hover));-webkit-background-clip:text;background-clip:text;color:transparent}.brand-sub{font-size:12px;color:var(--text-muted)}.sidebar-nav{display:flex;flex-direction:column;gap:4px}.nav-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;color:var(--text-muted);text-decoration:none;transition:background .15s ease,color .15s ease}.nav-item:hover{background:var(--bg-hover);color:var(--text)}.nav-item.active{background:#7c5cff26;color:var(--text)}.nav-icon{width:18px;text-align:center}.sidebar-footer{margin-top:auto}.user-card{padding:10px 12px;border:1px solid var(--border);border-radius:10px;color:var(--text-muted);font-size:13px}.app-main{flex:1;display:flex;flex-direction:column;min-width:0}.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 32px;border-bottom:1px solid var(--border);background:#0b0d12cc}.save-banner{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:8px 32px;background:#7c5cff1f;border-bottom:1px solid var(--border);font-size:13px;color:var(--text)}.save-banner-btn{padding:5px 14px;border:1px solid var(--accent);border-radius:999px;background:transparent;color:var(--accent);font-size:12px;white-space:nowrap}.save-banner-btn:hover{background:#7c5cff26}.search-box{flex:1;max-width:420px;display:flex;align-items:center;gap:8px;padding:8px 12px;border:1px solid var(--border);border-radius:999px;background:var(--bg-elev)}.search-box input{flex:1;border:none;outline:none;background:transparent;color:var(--text)}.search-box input::placeholder{color:var(--text-muted)}.topbar-actions{display:flex;align-items:center;gap:12px}.credit-badge{padding:6px 12px;border:1px solid var(--border);border-radius:999px;color:var(--text-muted);font-size:13px}.avatar{width:34px;height:34px;border:none;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent-hover));color:#fff;font-weight:600}.app-content{flex:1;overflow-y:auto;padding:24px 32px 140px}.page{max-width:960px;margin:0 auto}.page-header{margin-bottom:20px}.page-header h1{margin:0 0 6px;font-size:26px}.page-desc{margin:0;color:var(--text-muted);font-size:14px}.app-loading{min-height:100vh;display:flex;align-items:center;justify-content:center;color:var(--text-muted)}.login-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg)}.login-card{display:flex;flex-direction:column;gap:12px;width:320px;padding:28px;border:1px solid var(--border);border-radius:16px;background:var(--bg-elev);text-align:center}.login-card .brand-logo{font-size:28px}.login-card input{padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:var(--bg);color:var(--text);outline:none}.login-card input:focus{border-color:var(--accent)}.login-switch{border:none;background:transparent;color:var(--text-muted);font-size:12px;cursor:pointer;align-self:center}.login-switch:hover{color:var(--accent)}.admin-logout{width:100%;margin-top:8px;padding:8px;border:1px solid var(--border);border-radius:10px;background:transparent;color:var(--text-muted);font-size:12px}.admin-logout:hover{color:var(--danger);border-color:var(--danger)}.section{margin-top:36px}.section h2{margin:0 0 14px;font-size:18px}.empty-state{display:flex;flex-direction:column;align-items:center;gap:8px;padding:48px 24px;border:1px dashed var(--border);border-radius:var(--radius);text-align:center;color:var(--text-muted)}.empty-state p{margin:0}.muted{color:var(--text-muted);font-size:13px}.link-btn{margin-top:8px;padding:8px 18px;border-radius:999px;background:var(--accent);color:#fff;text-decoration:none;font-size:14px}.create-form{display:flex;flex-direction:column;gap:16px;padding:20px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-elev)}.field{display:flex;flex-direction:column;gap:6px}.field-label{font-size:13px;color:var(--text-muted)}.field input,.field textarea,.field select{padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:var(--bg);color:var(--text);outline:none}.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--accent)}.field textarea{resize:vertical}.form-row{display:flex;align-items:flex-end;justify-content:space-between;gap:12px}.field.inline{min-width:160px}.primary-btn{padding:10px 28px;border:none;border-radius:999px;background:var(--accent);color:#fff;font-weight:600;transition:background .15s ease}.primary-btn:hover:not(:disabled){background:var(--accent-hover)}.primary-btn:disabled{opacity:.5;cursor:not-allowed}.secondary-btn{padding:10px 18px;border:1px solid var(--border);border-radius:999px;background:transparent;color:var(--text);white-space:nowrap}.secondary-btn:hover:not(:disabled){background:var(--bg-hover)}.secondary-btn:disabled{opacity:.5;cursor:not-allowed}.generation-list{display:flex;flex-direction:column;gap:10px}.generation-card{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 16px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-elev)}.generation-info{display:flex;flex-direction:column;gap:6px;min-width:0}.generation-title{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.generation-meta{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text-muted)}.chip{padding:2px 8px;border:1px solid var(--border);border-radius:999px}.error-text{color:var(--danger)}.stage-text{color:var(--accent)}.upload-box{display:flex;flex-direction:column;gap:10px;padding:14px;border:1px dashed var(--border);border-radius:12px}.upload-box input[type=file]{color:var(--text-muted)}.agree-line{display:flex;align-items:flex-start;gap:8px;font-size:12px;color:var(--text-muted)}.agree-line input{margin-top:2px}.uploaded-list{display:flex;flex-direction:column;gap:6px}.uploaded-item{display:flex;align-items:center;justify-content:space-between;font-size:13px}.delete-timbre{border:none;background:transparent;color:var(--danger);cursor:pointer;font-size:12px}.dj-stage{display:flex;align-items:center;gap:36px;padding:28px;border:1px solid var(--border);border-radius:16px;background:var(--bg-elev)}.dj-disc{position:relative;display:flex;align-items:center;justify-content:center;width:200px;height:200px;flex-shrink:0;border-radius:50%;background:radial-gradient(circle,#232a38,#0b0d12 72%);border:2px solid var(--border)}.dj-disc:before{content:"";position:absolute;top:20px;right:20px;bottom:20px;left:20px;border-radius:50%;border:1px dashed var(--accent)}.dj-disc:after{content:"";position:absolute;width:34px;height:34px;border-radius:50%;background:var(--accent)}.disc-letter{position:relative;z-index:1;font-size:34px;font-weight:700;color:var(--text);margin-top:-60px}.dj-disc.playing{animation:spin 6s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.dj-info{display:flex;flex-direction:column;gap:14px;flex:1}.dj-now{font-size:18px;font-weight:600}.dj-eq{display:flex;align-items:flex-end;gap:4px;height:40px}.dj-eq span{width:6px;height:8px;border-radius:3px;background:var(--accent)}.dj-eq.playing span{animation:eq-bounce .7s ease-in-out infinite}@keyframes eq-bounce{0%,to{height:8px}50%{height:40px}}.dj-controls{display:flex;gap:10px;align-items:center}.dance-btn{align-self:flex-start}.dj-queue{display:flex;flex-direction:column;gap:6px}.dj-queue-item{display:flex;align-items:center;gap:12px;padding:10px 14px;border:1px solid var(--border);border-radius:10px;background:var(--bg-elev);color:var(--text);text-align:left}.dj-queue-item:hover{background:var(--bg-hover)}.dj-queue-item.current{border-color:var(--accent)}.dj-queue-index{width:22px;color:var(--text-muted);font-size:13px}.dj-queue-title{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px}.stat-card{display:flex;flex-direction:column;gap:6px;padding:16px;border:1px solid var(--border);border-radius:12px;background:var(--bg-elev)}.stat-num{font-size:24px;font-weight:700}.stat-label{font-size:12px;color:var(--text-muted)}.admin-table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:12px}.admin-login{margin-top:12px}.admin-table{width:100%;border-collapse:collapse;font-size:13px}.admin-table th,.admin-table td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--border)}.admin-table th{background:var(--bg-elev);color:var(--text-muted);font-weight:500}.admin-table tr:last-child td{border-bottom:none}.admin-prompt{max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.preview-chip{border-color:var(--accent);color:var(--accent)}.preview-play{padding:6px 14px;border:1px solid var(--accent);border-radius:999px;background:transparent;color:var(--accent);font-size:13px;white-space:nowrap}.preview-play:hover{background:#7c5cff1f}.generation-progress{display:flex;align-items:center;gap:10px;width:220px;flex-shrink:0}.progress-pct{width:38px;text-align:right;font-size:12px;color:var(--text-muted)}.progress-track{flex:1;height:6px;border-radius:999px;background:var(--bg-hover);overflow:hidden}.progress-track.clickable{cursor:pointer}.progress-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--accent),var(--accent-hover));transition:width .3s ease}.song-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:18px}.song-card{display:flex;flex-direction:column;gap:8px}.song-cover{position:relative;display:flex;align-items:center;justify-content:center;aspect-ratio:1;border-radius:var(--radius);background:linear-gradient(135deg,#232a38,#12151d);cursor:pointer;overflow:hidden}.song-cover.large{width:220px;flex-shrink:0}.cover-char{font-size:42px;font-weight:700;color:#eef1f6b3}.cover-play{position:absolute;right:10px;bottom:10px;display:flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;background:var(--accent);color:#fff;font-size:14px;opacity:0;transition:opacity .15s ease,transform .15s ease}.song-cover:hover .cover-play{opacity:1;transform:scale(1.05)}.song-title{color:var(--text);text-decoration:none;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.song-title:hover{text-decoration:underline}.song-meta{font-size:12px;color:var(--text-muted)}.download-btn{display:inline-block;padding:4px 12px;border:1px solid var(--border);border-radius:999px;color:var(--text-muted);text-decoration:none;font-size:12px}.download-btn:hover{border-color:var(--accent);color:var(--accent)}.preview-actions{display:flex;align-items:center;gap:8px}.download-inline{margin-left:10px}.track-info .muted{margin-top:10px}.section-hint{margin:-6px 0 12px}.player-bar{position:fixed;left:220px;right:0;bottom:0;display:flex;align-items:center;gap:24px;padding:12px 32px;border-top:1px solid var(--border);background:#12151df5;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.player-bar.empty{color:var(--text-muted);font-size:13px}.player-track{display:flex;align-items:center;gap:10px;min-width:220px}.cover-placeholder{display:flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:8px;background:linear-gradient(135deg,var(--accent),var(--accent-hover));color:#fff;font-weight:700}.player-meta{display:flex;flex-direction:column;gap:2px;min-width:0}.player-title{font-size:14px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.player-sub{font-size:12px;color:var(--text-muted)}.player-controls{display:flex;align-items:center;gap:8px}.control-btn{display:flex;align-items:center;justify-content:center;width:34px;height:34px;border:1px solid var(--border);border-radius:50%;background:transparent;color:var(--text)}.control-btn.primary{width:40px;height:40px;border:none;background:var(--accent)}.player-progress{flex:1;display:flex;align-items:center;gap:12px}.progress-time{font-size:12px;color:var(--text-muted);white-space:nowrap}.track-hero{display:flex;gap:24px;align-items:center}.track-info h1{margin:0 0 6px;font-size:28px}.track-info .primary-btn{margin-top:14px}.lyrics-box{margin:0;padding:18px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-elev);color:var(--text-muted);white-space:pre-wrap;line-height:1.7}