:root{--bg-0: #0e1116;--bg-1: #151a21;--bg-2: #1c232c;--bg-3: #242d38;--line: #2c3542;--text: #e6edf3;--text-dim: #93a1b1;--accent: #3ba55d;--accent-hover: #2f8b4c;--danger: #d83c3e;--danger-hover: #b9302f;--warn: #e8a838;--speaking: #43d17a;--radius: 10px;--shadow: 0 8px 24px rgba(0, 0, 0, .45)}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg-0);color:var(--text);font-family:Segoe UI,system-ui,-apple-system,Roboto,sans-serif;font-size:15px;line-height:1.45;-webkit-font-smoothing:antialiased}button,input,select{font:inherit;color:inherit}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.login-screen{min-height:100%;display:grid;place-items:center;padding:24px;background:radial-gradient(1200px 600px at 50% -10%,#1b2430 0%,var(--bg-0) 60%)}.login-card{width:min(420px,100%);background:var(--bg-1);border:1px solid var(--line);border-radius:14px;padding:32px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:10px}.login-title{margin:0;font-size:28px}.login-subtitle{margin:0 0 12px;color:var(--text-dim)}.login-hint{margin:4px 0 0;font-size:13px;color:var(--text-dim)}.login-card label{font-size:13px;color:var(--text-dim)}.login-card input[type=text],.create-room input[type=text],.modal select{width:100%;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);padding:10px 12px;outline:none}.login-card input:focus,.create-room input:focus,.modal select:focus{border-color:var(--accent)}.app-shell{height:100%;display:grid;grid-template-rows:auto auto 1fr auto;background:var(--bg-0)}.app-header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 16px;background:var(--bg-1);border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:8px;font-weight:600}.brand-mark{font-size:20px}.header-right{display:flex;align-items:center;gap:10px}.status-badge{display:inline-flex;align-items:center;gap:8px;background:var(--bg-2);border:1px solid var(--line);border-radius:999px;padding:5px 12px;font-size:13px;white-space:nowrap}.status-dot{width:9px;height:9px;border-radius:50%;background:var(--text-dim)}.status-connected .status-dot{background:var(--accent)}.status-connecting .status-dot,.status-reconnecting .status-dot{background:var(--warn);animation:pulse 1s infinite}.status-error .status-dot,.status-server-unreachable .status-dot,.status-mic-blocked .status-dot{background:var(--danger)}.status-room{color:var(--text-dim)}@keyframes pulse{0%,to{opacity:1}50%{opacity:.35}}.banner{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 16px;font-size:14px}.banner-error{background:#3a1d1f;border-bottom:1px solid #5c2b2c;color:#ffd8d8}.error-text{color:#ff9b9b;font-size:13px;margin:4px 0 0}.hint{color:var(--text-dim);font-size:13px;margin:4px 0 8px}.app-main{display:grid;grid-template-columns:260px 1fr;min-height:0}.sidebar{background:var(--bg-1);border-right:1px solid var(--line);padding:12px;overflow-y:auto;display:flex;flex-direction:column;gap:12px}.sidebar-title{margin:0;font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--text-dim)}.room-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}.room-item{width:100%;display:flex;align-items:center;gap:8px;background:transparent;border:1px solid transparent;border-radius:8px;padding:8px 10px;cursor:pointer;text-align:left}.room-item:hover:not(:disabled){background:var(--bg-2)}.room-item.is-selected{border-color:var(--line);background:var(--bg-2)}.room-item.is-active{background:var(--bg-3);border-color:var(--accent)}.room-item:disabled{opacity:.6;cursor:default}.room-name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.room-count{color:var(--text-dim);font-size:12px;font-variant-numeric:tabular-nums}.room-tag{font-size:10px;text-transform:uppercase;letter-spacing:.05em;background:var(--bg-3);border-radius:4px;padding:1px 5px;color:var(--text-dim)}.room-participants{list-style:none;margin:0 0 4px 30px;padding:0;font-size:13px;color:var(--text-dim)}.create-room{margin-top:auto;display:flex;flex-direction:column;gap:6px}.create-room label{font-size:12px;color:var(--text-dim)}.create-room-row{display:flex;gap:6px}.create-room-row button{width:40px;background:var(--bg-3);border:1px solid var(--line);border-radius:var(--radius);cursor:pointer}.create-room-row button:disabled{opacity:.5;cursor:default}.participants{padding:16px;overflow-y:auto}.participants-empty{display:grid;place-items:center}.empty-hint{text-align:center;color:var(--text-dim)}.participants-header{display:flex;align-items:baseline;gap:10px;margin-bottom:14px}.participants-header h2{margin:0;font-size:20px}.participants-count{color:var(--text-dim);font-size:13px}.participant-grid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px}.participant-card{background:var(--bg-1);border:1px solid var(--line);border-radius:12px;padding:12px;transition:border-color .12s ease,box-shadow .12s ease}.participant-card.is-speaking{border-color:var(--speaking);box-shadow:0 0 0 2px #43d17a2e}.participant-top{display:flex;align-items:center;gap:10px}.participant-avatar{width:36px;height:36px;border-radius:50%;background:var(--bg-3);display:grid;place-items:center;font-weight:600}.participant-info{flex:1;min-width:0;display:flex;flex-direction:column}.participant-name{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.participant-you{color:var(--text-dim);font-weight:400}.participant-meta{font-size:12px;color:var(--text-dim)}.mic-indicator.is-muted{opacity:.6}.level-bar{height:4px;background:var(--bg-3);border-radius:3px;margin:10px 0 8px;overflow:hidden}.level-fill{height:100%;background:var(--speaking);transition:width .12s linear}.participant-controls{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.volume-control{display:flex;align-items:center;gap:6px;flex:1;min-width:120px}.volume-control input[type=range]{flex:1;accent-color:var(--accent)}.volume-value{font-size:12px;color:var(--text-dim);width:38px;text-align:right}.control-bar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:10px 16px;background:var(--bg-1);border-top:1px solid var(--line)}.control-group{display:flex;align-items:center;gap:8px}.control-status{flex:1;justify-content:center}.btn{background:var(--bg-3);border:1px solid var(--line);border-radius:var(--radius);padding:9px 14px;cursor:pointer;white-space:nowrap}.btn:hover:not(:disabled){background:#2c3745}.btn:disabled{opacity:.45;cursor:default}.btn-small{padding:6px 10px;font-size:13px}.btn-wide{width:100%;margin-top:8px}.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn-primary:hover:not(:disabled){background:var(--accent-hover)}.btn-danger{background:var(--danger);border-color:var(--danger);color:#fff}.btn-danger:hover:not(:disabled){background:var(--danger-hover)}.btn-on{border-color:var(--accent);color:#c8f0d5}.btn-off{border-color:var(--danger);color:#ffc9c9}.small-button{background:var(--bg-2);border:1px solid var(--line);border-radius:8px;padding:5px 9px;font-size:12px;cursor:pointer}.small-button.is-on{border-color:var(--danger);color:#ffc9c9}.icon-button{background:transparent;border:none;cursor:pointer;color:var(--text-dim);font-size:16px;padding:2px 6px}.icon-button:hover{color:var(--text)}.link-button{background:none;border:none;padding:0;cursor:pointer;color:var(--accent);text-decoration:underline}.ptt-indicator{font-size:13px;color:var(--text-dim);border:1px dashed var(--line);border-radius:999px;padding:5px 12px}.ptt-indicator.is-sending{color:#0f1a12;background:var(--speaking);border-style:solid;border-color:var(--speaking);font-weight:600}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:grid;place-items:center;padding:16px;z-index:50}.modal{width:min(520px,100%);max-height:90vh;overflow-y:auto;background:var(--bg-1);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}.modal-header,.modal-footer{display:flex;align-items:center;justify-content:space-between;padding:14px 18px}.modal-header{border-bottom:1px solid var(--line)}.modal-header h2{margin:0;font-size:18px}.modal-footer{border-top:1px solid var(--line);justify-content:flex-end}.modal-body{padding:8px 18px 16px}.settings-section{padding:12px 0;border-bottom:1px solid var(--line)}.settings-section:last-child{border-bottom:none}.settings-section h3{margin:0 0 8px;font-size:14px;color:var(--text-dim);text-transform:uppercase;letter-spacing:.05em}.radio-row{display:flex;gap:18px;flex-wrap:wrap}.radio-row label,.check-row{display:flex;align-items:center;gap:7px;cursor:pointer}.check-row{margin-bottom:6px}.key-row{display:flex;align-items:center;gap:10px;margin-top:12px}input[type=radio],input[type=checkbox]{accent-color:var(--accent)}@media (max-width: 760px){.app-main{grid-template-columns:1fr;grid-template-rows:auto 1fr}.sidebar{max-height:38vh;border-right:none;border-bottom:1px solid var(--line)}.control-bar{justify-content:center}.control-status{order:-1;width:100%}.participant-grid{grid-template-columns:1fr}}