:root{
  --bg:#f8fafc;
  --surface:#ffffff;
  --surface-2:#f1f5f9;
  --surface-3:#f8fafc;
  --text:#0f172a;
  --text-muted:#64748b;
  --border:#e2e8f0;
  --primary:#2563eb;
  --primary-ring:rgba(37,99,235,0.2);
  --success:#16a34a;
  --success-soft:#dcfce7;
  --shadow-sm:0 1px 2px rgba(15,23,42,0.05);
  --safe-area-inset-top:0px;
}
*{box-sizing:border-box}
body{margin:0;font-family:'Instrument Sans',system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}
.display{font-family:'Sora',sans-serif}
button{cursor:pointer}
.card{border:1px solid var(--border);background:var(--surface);border-radius:14px;box-shadow:var(--shadow-sm)}
.btn-primary{background:var(--text);color:var(--surface);border-radius:999px;padding:10px 18px;font-weight:500;font-size:14px;border:0}
.btn-primary:hover{opacity:0.9}
.btn-ghost{background:var(--surface-2);color:var(--text);border:1px solid var(--border);border-radius:999px;padding:9px 16px;font-size:14px}
.badge-live{display:inline-flex;align-items:center;gap:6px;background:var(--success-soft);color:var(--success);border-radius:999px;padding:4px 10px;font-size:11px;font-weight:600}
.dot{width:6px;height:6px;border-radius:50%;background:var(--success);animation:pulse 1.5s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:0.5}}
.video-tile{aspect-ratio:16/10;background:#0f172a;border-radius:16px;position:relative;overflow:hidden;color:white;display:grid;place-items:center}
.control-pill{height:40px;border-radius:999px;border:1px solid var(--border);background:var(--surface);display:inline-flex;align-items:center;gap:8px;padding:0 14px;font-size:13px;font-weight:500}
.control-pill.active{background:var(--text);color:var(--surface);border-color:var(--text)}
.control-pill.danger{background:#dc2626;color:white;border-color:#dc2626}
.link-box{display:flex;align-items:center;gap:8px;border:1px solid var(--border);background:var(--surface);border-radius:12px;padding:0 12px;height:40px}
input.link-input{flex:1;border:0;background:transparent;outline:none;font-size:13px;font-weight:500}
.status-list{display:flex;flex-direction:column;gap:8px}
.status-item{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;border-radius:10px;border:1px solid var(--border);background:var(--surface)}
.nav-tab{padding:8px 14px;border-radius:999px;font-size:14px;font-weight:500;border:0;background:transparent}
.nav-tab.active{background:var(--text);color:var(--surface)}
/* header */
.header{position:sticky;top:0;z-index:30;border-bottom:1px solid var(--border);background:rgba(255,255,255,0.8);backdrop-filter:blur(12px)}
/* Embedded live audio/video call */
.jitsi-frame-shell {
  background: #0b1220;
  min-height: 620px;
}
.jitsi-frame-wrap {
  width: 100%;
  height: min(76vh, 780px);
  min-height: 620px;
}
.jitsi-frame-wrap iframe {
  width: 100% !important;
  height: 100% !important;
  border: 0;
}
@media (max-width: 640px) {
  .jitsi-frame-shell,
  .jitsi-frame-wrap {
    min-height: 72vh;
    height: 72vh;
  }
}