*{margin:0;padding:0;box-sizing:border-box}
html,body{
  background:#000;height:100%;overflow:hidden;color:#fff;
  font-family:-apple-system,BlinkMacSystemFont,system-ui,Segoe UI,Roboto,Arial,sans-serif;
  -webkit-tap-highlight-color: transparent;
}

/* Safe area iOS */
:root{
  --safe-top: env(safe-area-inset-top);
  --safe-bottom: env(safe-area-inset-bottom);
  --accent:#3b82f6;
  --panel: rgba(0,0,0,.55);
  --border: rgba(255,255,255,.08);
}

/* VIDEO */
#video-layer{position:fixed;inset:0;background:#000;z-index:1}
.v{
  position:fixed;inset:0;width:100vw;height:100vh;
  object-fit:cover;background:#000;
  opacity:0;transition:opacity 1s ease, transform .25s ease, filter .25s ease;
}
.v.active{opacity:1}

/* START */
#start{
  position:fixed;inset:0;z-index:50;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  background:#000;gap:16px;text-align:center;padding:20px;
}
#start button{
  padding:16px 28px;border:none;border-radius:999px;
  background:var(--accent);color:#fff;font-weight:800;font-size:18px;
}

/* UI */
#ui-layer{position:fixed;inset:0;z-index:10;pointer-events:none}

/* TOPBAR */
#topbar{
  position:fixed;top:calc(12px + var(--safe-top));left:14px;right:14px;
  display:flex;justify-content:space-between;pointer-events:auto;z-index:40;
}

#status{
  padding:10px 14px;border-radius:999px;
  background:rgba(0,0,0,.6);
  display:flex;gap:10px;font-size:14px;
  border:1px solid rgba(255,255,255,.08);
}
#dot{color:#34d399}

.btn{
  border:none;border-radius:999px;
  padding:10px 14px;
  background:rgba(255,255,255,.08);
  color:#fff;font-size:18px;
  border:1px solid var(--border);
  backdrop-filter:blur(10px);
}
.btn.wide{width:100%}

.row{display:flex;align-items:center;gap:10px}
.mini{font-size:12px;opacity:.65}

/* Chips */
.chip{
  border:1px solid rgba(255,255,255,.10);
  background:rgba(255,255,255,.06);
  color:#fff;
  padding:10px 14px;
  border-radius:999px;
  font-size:14px;
}
.chip.active{outline:2px solid rgba(59,130,246,.55)}

/* Backdrop */
#menuBackdrop{
  position:fixed;inset:0;
  background:rgba(0,0,0,.35);
  opacity:0;pointer-events:none;
  transition:opacity .18s ease;
  z-index:25;
}
#menuBackdrop.open{opacity:1;pointer-events:auto}

/* Side menu */
#sideMenu{
  position:fixed;top:0;right:-320px;width:300px;height:100%;
  padding-top:calc(20px + var(--safe-top));
  padding-bottom:calc(20px + var(--safe-bottom));
  background:rgba(0,0,0,.6);
  backdrop-filter:blur(12px);
  border-left:1px solid var(--border);
  z-index:30;padding:18px;
  transition:right .22s ease;
  pointer-events:auto;
}
#sideMenu.open{right:0}
#sideMenu h2{font-size:18px;margin:6px 0 14px 0}

.setting{padding:12px 0;border-bottom:1px solid rgba(255,255,255,.06)}
.setting label{display:block;font-size:12px;opacity:.75;margin-bottom:8px}
input[type="range"]{width:100%;accent-color:var(--accent)}

/* BOTTOM */
#bottom{
  position:fixed;left:0;right:0;bottom:0;z-index:20;
  padding:14px;padding-bottom:calc(14px + var(--safe-bottom));
  pointer-events:auto;
  background:linear-gradient(transparent, rgba(0,0,0,.82));
}
#inputWrap{
  max-width:720px;margin:0 auto;
  display:flex;gap:10px;align-items:center;
  padding:10px;border-radius:999px;
  background:rgba(0,0,0,.6);
  border:1px solid rgba(255,255,255,.08);
}
#msg{
  flex:1;border:none;outline:none;background:transparent;color:#fff;font-size:16px;
}
#send,#micBtn{
  padding:12px 16px;border:none;border-radius:999px;
  background:var(--accent);color:#fff;font-weight:800;font-size:16px;
}
#micBtn{background:#ef4444}