:root{color-scheme:dark;--bg: #0d1117;--panel: #161b22;--panel-2: #1b2332;--border: #2a3242;--text: #e6edf3;--text-dim: #8b949e;--primary: #4f8cff;--primary-2: #7aa7ff;--danger: #f85149;--ok: #3fb950;--radius: 14px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Segoe UI,PingFang SC,Microsoft YaHei,system-ui,sans-serif;background:radial-gradient(1200px 600px at 20% -10%,#16233f 0%,transparent 60%),radial-gradient(1000px 500px at 90% 110%,#1a1f3a 0%,transparent 55%),var(--bg);color:var(--text);min-height:100vh}button{font:inherit;cursor:pointer;border:none}input{font:inherit}.app-shell{max-width:1080px;margin:0 auto;padding:40px 20px 60px}.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border-radius:10px;background:var(--panel-2);color:var(--text);border:1px solid var(--border);transition:background .2s,border-color .2s,opacity .2s}.btn:hover:not(:disabled){background:#223050}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;font-weight:600;padding:12px 20px;border-radius:10px}.btn-primary:hover{filter:brightness(1.08)}.btn-danger{background:transparent;border-color:var(--danger);color:var(--danger)}.btn-danger:hover{background:#f851491f}.btn.active{background:#173a2a;border-color:var(--ok);color:var(--ok)}.dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--text-dim)}.dot.on{background:var(--ok);box-shadow:0 0 6px var(--ok)}.dot.red{background:var(--danger);box-shadow:0 0 6px var(--danger)}.home{display:flex;flex-direction:column;align-items:center;text-align:center;padding-top:40px}.logo{width:72px;height:72px;border-radius:20px;display:flex;align-items:center;justify-content:center;color:#fff;background:linear-gradient(135deg,var(--primary),#7b5cff);box-shadow:0 12px 32px #4f8cff59;margin-bottom:18px}.home h1{font-size:32px;letter-spacing:.5px}.subtitle{color:var(--text-dim);margin-top:8px;margin-bottom:32px}.join-form{width:100%;max-width:420px;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:26px 26px 24px;display:flex;flex-direction:column;gap:16px;text-align:left}.join-form label{display:flex;flex-direction:column;gap:6px}.join-form label span{font-size:13px;color:var(--text-dim)}.join-form input{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:10px 12px;color:var(--text);outline:none;transition:border-color .2s}.join-form input:focus{border-color:var(--primary)}.input-row{display:flex;gap:8px}.input-row input{flex:1}.btn-ghost{background:var(--panel-2);border:1px solid var(--border);border-radius:8px;padding:0 14px;color:var(--text-dim);font-size:13px}.btn-ghost:hover{color:var(--text);border-color:var(--primary)}.tip{margin-top:20px;max-width:520px;font-size:13px;line-height:1.7;color:var(--text-dim)}.tip code{background:var(--panel);border:1px solid var(--border);border-radius:4px;padding:1px 6px;font-size:12px;color:var(--primary-2)}.link-btn{background:none;border:none;color:var(--primary-2);font-size:inherit;padding:0 2px;cursor:pointer}.link-btn:hover{text-decoration:underline}.form-error{color:var(--danger);font-size:13px;text-align:center}.lobby{display:flex;flex-direction:column;gap:20px}.lobby-header{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:18px 22px}.lobby-title{font-size:20px;font-weight:600}.create-panel{display:flex;gap:10px}.create-panel input{flex:1;background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:12px 14px;color:var(--text);outline:none;transition:border-color .2s}.create-panel input:focus{border-color:var(--primary)}.lobby-empty{text-align:center;color:var(--text-dim);padding:40px 0;font-size:14px}.room-list{display:flex;flex-direction:column;gap:12px}.room-item{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:16px 20px;transition:border-color .2s}.room-item:hover{border-color:var(--primary)}.room-item-name{font-size:16px;font-weight:600;margin-bottom:6px}.room-meta code,.room-code{background:var(--bg);border:1px solid var(--border);border-radius:4px;padding:1px 6px;font-size:12px;color:var(--primary-2)}.room-item-side{display:flex;align-items:center;gap:14px}.online-badge{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--text-dim);white-space:nowrap}.lobby-user{display:flex;align-items:center;gap:14px}.avatar-btn{cursor:pointer;border:2px solid transparent;transition:border-color .2s}.avatar-btn:hover{border-color:var(--primary)}.lobby-user-info{display:flex;flex-direction:column;gap:4px}.lobby-user-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.btn-small{padding:5px 12px;font-size:12px;border-radius:8px}.avatar-error{color:var(--danger);font-size:12px}.hidden-file{display:none}.room-avatar{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,#31405e,#4f8cff);display:flex;align-items:center;justify-content:center;color:#fff;overflow:hidden;flex-shrink:0}.room-avatar img{width:100%;height:100%;object-fit:cover}.room-avatar-lg{width:72px;height:72px;border-radius:18px;font-size:26px;cursor:pointer;border:2px dashed var(--border);background:var(--panel-2);transition:border-color .2s}.room-avatar-lg:hover{border-color:var(--primary)}.room-item-head{display:flex;align-items:center;gap:12px}.room-head-main{display:flex;align-items:center;gap:14px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#050a1499;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);display:flex;align-items:center;justify-content:center;z-index:50}.modal{width:100%;max-width:400px;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;gap:18px;box-shadow:0 20px 60px #00000080}.modal h3{font-size:18px}.modal-field{display:flex;flex-direction:column;gap:8px}.modal-label{font-size:13px;color:var(--text-dim)}.modal-field input{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:10px 12px;color:var(--text);outline:none}.modal-field input:focus{border-color:var(--primary)}.modal-actions{display:flex;justify-content:flex-end;gap:10px}.mic-banner{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;background:#7b5cff1f;border:1px solid #7b5cff;color:#d6ccff;border-radius:10px;padding:12px 16px;font-size:13px;line-height:1.6}.room{display:flex;flex-direction:column;gap:20px}.room-header{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:18px 22px}.room-title{font-size:20px;font-weight:600}.room-meta{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-dim);margin-top:4px}.room-actions{display:flex;gap:10px}.error-banner{background:#f851491f;border:1px solid var(--danger);color:#ffb3ad;border-radius:10px;padding:12px 16px;font-size:14px}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}.user-card{position:relative;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:22px 18px;display:flex;flex-direction:column;align-items:center;gap:8px;transition:border-color .25s,box-shadow .25s}.user-card.speaking{border-color:var(--ok);box-shadow:0 0 20px #3fb95040}.user-card.muted{opacity:.75}.avatar{width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,#31405e,#4f8cff);display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:700;color:#fff;overflow:hidden;flex-shrink:0}.avatar img{width:100%;height:100%;object-fit:cover}.user-card.muted .avatar{filter:grayscale(.7)}.user-name{font-size:15px;font-weight:600;text-align:center;word-break:break-all}.user-name .me-tag{color:var(--primary-2);font-weight:400;font-size:12px}.user-status{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text-dim)}.sound-bars{display:flex;gap:3px;height:22px;align-items:center}.sound-bars span{width:5px;height:16px;border-radius:3px;background:linear-gradient(to top,#78c88c4d,#3fb950d9);box-shadow:0 0 6px #3fb95033;transform-origin:center;animation:bar-breath 2.8s ease-in-out infinite}.sound-bars span:nth-child(1){animation-delay:0s}.sound-bars span:nth-child(2){animation-delay:.28s}.sound-bars span:nth-child(3){animation-delay:.56s}.sound-bars span:nth-child(4){animation-delay:.84s}.sound-bars span:nth-child(5){animation-delay:1.12s}.user-card.speaking .sound-bars span{background:linear-gradient(to top,#3fb950,#8fe89c);box-shadow:0 0 12px #3fb95099;animation-duration:1.1s}@keyframes bar-breath{0%,to{transform:scaleY(.28);opacity:.55}50%{transform:scaleY(1);opacity:1}}.user-card.speaking .avatar{animation:avatar-breath 1.5s ease-in-out infinite}@keyframes avatar-breath{0%,to{box-shadow:0 0 #3fb95000}50%{box-shadow:0 0 0 7px #3fb95038,0 0 24px #3fb9506b}}.user-card.speaking{border-color:var(--ok);animation:card-breath 1.5s ease-in-out infinite}@keyframes card-breath{0%,to{box-shadow:0 0 8px #3fb9501a}50%{box-shadow:0 0 26px #3fb95061}}.user-card.muted .sound-bars span{background:var(--text-dim);box-shadow:none;animation:none;opacity:.45}.room-tip{font-size:13px;color:var(--text-dim);text-align:center;line-height:1.7}