:root{--bg: #0d1117;--card: #161b22;--border: #30363d;--text: #e6edf3;--muted: #8b949e;--accent: #2ea043;--accent-hover: #3fb950;--error: #f85149}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.app{max-width:720px;margin:0 auto;padding:0 20px 60px}.topbar{position:sticky;top:0;background:var(--bg);padding:20px 0 12px;border-bottom:1px solid var(--border);margin-bottom:24px;z-index:10}.topbar-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}.brand{font-size:22px;font-weight:600}.topbar-row .brand{margin-bottom:0}.app.loading{padding-top:80px;text-align:center;color:var(--muted)}.login-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}.login-card{width:100%;max-width:360px}.center{text-align:center}.login-card .brand{margin-bottom:4px}.tabs{display:flex;gap:4px}.tab{position:relative;padding:8px 16px;background:transparent;border:none;border-radius:8px;color:var(--muted);font-size:15px;cursor:pointer}.tab:hover{color:var(--text);background:var(--card)}.tab.active{color:var(--text);background:var(--card);font-weight:600}.tab-badge{margin-left:8px;padding:1px 7px;border-radius:10px;background:var(--border);font-size:12px;color:var(--text)}.tab.active .tab-badge{background:var(--accent)}.content{display:flex;flex-direction:column}.stack{display:flex;flex-direction:column;gap:16px}.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:20px;display:flex;flex-direction:column;gap:14px}.card.empty{color:var(--muted);text-align:center;padding:40px 20px}.card-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}h2{font-size:18px;margin:0 0 2px}.hint{color:var(--muted);margin:0;font-size:14px}.input-row{display:flex;gap:8px}.text-field{flex:1;padding:11px 14px;background:var(--bg);border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:15px}.text-field:focus{outline:none;border-color:var(--accent)}.text-area{width:100%;resize:vertical;min-height:96px;font-family:inherit;line-height:1.5}.btn{padding:10px 18px;border-radius:8px;border:1px solid var(--border);background:transparent;color:var(--text);font-size:15px;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}.btn:hover{border-color:var(--muted)}.btn:disabled{opacity:.5;cursor:default}.btn.primary{background:var(--accent);border-color:var(--accent)}.btn.primary:hover:not(:disabled){background:var(--accent-hover)}.btn.danger{color:var(--error);border-color:transparent}.btn.danger:hover:not(:disabled){border-color:var(--error)}.link-btn{background:none;border:none;color:var(--muted);cursor:pointer;font-size:14px}.link-btn:hover{color:var(--text)}.actions{display:flex;justify-content:flex-end;gap:10px}.track-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;max-height:55vh;overflow-y:auto}.track{display:flex;gap:12px;align-items:flex-start}.t-num{color:var(--muted);font-size:13px;min-width:22px;text-align:right;padding-top:2px}.t-main{flex:1;display:flex;flex-direction:column;gap:3px;min-width:0}.t-line{display:flex;justify-content:space-between;align-items:center;gap:8px}.t-title{font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.t-sub{color:var(--muted);font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.bar{height:5px;background:var(--bg);border-radius:3px;overflow:hidden;margin-top:3px}.bar.tall{height:8px}.bar-fill{height:100%;background:var(--accent);transition:width .3s}.bar-fill.failed{background:var(--error)}.bar-fill.done{background:var(--accent-hover)}.badge{font-size:12px;color:var(--muted);white-space:nowrap}.badge.done{color:var(--accent-hover)}.badge.failed{color:var(--error)}.badge.downloading,.badge.searching{color:var(--accent)}.error{color:var(--error);font-size:14px;margin:0}.error.small{font-size:12px}.spinner{width:16px;height:16px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite;flex-shrink:0}@keyframes spin{to{transform:rotate(360deg)}}