:root{--bg: #0e0f13;--panel: #181a21;--panel-2: #20232c;--border: #2a2e3a;--text: #e7e9ee;--muted: #9aa1b1;--accent: #4f8cff;--danger: #ff4f5e;--live: #1fd07a}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);font:14px/1.45 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.app{display:flex;flex-direction:column;height:100%}.topbar{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;border-bottom:1px solid var(--border)}.topbar h1{font-size:16px;margin:0;font-weight:600}.error-banner{background:#ff4f5e1f;color:var(--danger);padding:10px 20px;border-bottom:1px solid var(--border)}.layout{display:grid;grid-template-columns:1fr 340px;gap:16px;padding:16px;flex:1;min-height:0}.stage{display:flex;flex-direction:column;min-width:0}.preview-wrap{position:relative;background:#000;border:1px solid var(--border);border-radius:10px;overflow:hidden;aspect-ratio:16 / 9;width:100%}.preview-canvas{width:100%;height:100%;display:block;touch-action:none}.preview-empty{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;color:var(--muted)}.meter-row{display:flex;align-items:center;gap:10px;margin-top:12px}.meter-label{color:var(--muted);width:28px}.vu{flex:1;height:10px;background:var(--panel-2);border-radius:6px;overflow:hidden}.vu-fill{height:100%;background:linear-gradient(90deg,var(--live),#f2c94c,var(--danger));transition:width 80ms linear}.panel{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:14px;overflow:auto;display:flex;flex-direction:column;gap:14px}fieldset{border:1px solid var(--border);border-radius:8px;margin:0;padding:12px}fieldset[disabled]{opacity:.6}legend{color:var(--muted);padding:0 6px;font-size:12px;text-transform:uppercase;letter-spacing:.04em}label{display:block;margin-bottom:10px;color:var(--muted)}input{width:100%;margin-top:4px;padding:8px 10px;background:var(--panel-2);border:1px solid var(--border);border-radius:6px;color:var(--text)}button{background:var(--panel-2);color:var(--text);border:1px solid var(--border);border-radius:6px;padding:8px 12px;cursor:pointer}button:hover:not(:disabled){border-color:var(--accent)}button:disabled{opacity:.5;cursor:not-allowed}button.on{background:var(--accent);border-color:var(--accent);color:#fff}.btn-row{display:flex;gap:8px;margin-bottom:10px}.btn-row button{flex:1}.seg{display:flex;align-items:center;gap:6px;margin-top:8px}.seg-label{color:var(--muted);width:56px;font-size:12px}.mute-btn{width:100%;margin-top:10px}.go-live button{width:100%;padding:12px;font-weight:600;font-size:15px}.go-live .primary{background:var(--accent);border-color:var(--accent);color:#fff}.go-live .danger{background:var(--danger);border-color:var(--danger);color:#fff}.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;font-size:12px;background:var(--panel-2);border:1px solid var(--border)}.badge-dot{width:8px;height:8px;border-radius:50%;background:var(--muted)}.badge-live .badge-dot{background:var(--live);box-shadow:0 0 8px var(--live)}.badge-connecting .badge-dot{background:#f2c94c}.badge-error .badge-dot{background:var(--danger)}@media (max-width: 860px){.layout{grid-template-columns:1fr}}