:root{
  --bg:#071021; --card:#0b1a2b; --accent:#2ab7b6; --muted:#8aa3b1; --danger:#e24b4b;
}
*{box-sizing:border-box}
html,body{height:100%;margin:0;background:linear-gradient(180deg,#071021 0%, #081826 100%);color:#e6f7f6;font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial}
.app{display:flex;flex-direction:column;min-height:100vh}
.top{padding:14px 16px;text-align:center}
.title{font-size:20px;font-weight:700;color:var(--accent)}
.subtitle{font-size:12px;color:var(--muted)}
.main{flex:1;display:flex;flex-direction:column;gap:12px;padding:12px}
.stage{position:relative;flex:1;display:flex;align-items:center;justify-content:center;min-height:320px;border-radius:16px;background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(0,0,0,0.05));overflow:hidden}
#remote{width:100%;height:100%;object-fit:cover;background:#000;border-radius:12px}
#local{position:absolute;right:12px;bottom:12px;width:28%;max-width:140px;border-radius:50%;border:4px solid rgba(255,255,255,0.08);box-shadow:0 8px 24px rgba(0,0,0,0.6);object-fit:cover;background:#000}
.controls{position:absolute;left:12px;top:12px;display:flex;flex-direction:column;gap:10px}
.big{background:var(--accent);border:none;padding:12px 14px;border-radius:12px;color:#022;font-weight:700;font-size:14px}
.big.danger{background:var(--danger);color:#fff}
.signaling{margin-top:8px;background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(0,0,0,0.03));padding:10px;border-radius:12px}
textarea{width:100%;min-height:88px;border-radius:10px;padding:8px;border:none;background:rgba(255,255,255,0.02);color:#e6f7f6;resize:vertical}
.row{display:flex;gap:8px;margin-top:8px}
.row button{flex:1;padding:10px;border-radius:10px;border:none;background:rgba(255,255,255,0.03);color:var(--accent);font-weight:700}
.footer{padding:10px;text-align:center;font-size:12px;color:var(--muted)}
@media (max-width:480px){#local{width:34%;max-width:120px;right:8px;bottom:8px}.controls{left:8px;top:8px}.big{padding:10px;font-size:13px}}