:root {
  --bg: #0b1220;
  --fg: #e8eef8;
  --muted: #8b9bb4;
  --panel: #121a2b;
  --border: #243149;
  --accent: #3b82f6;
  --danger: #ef5350;
  --ok: #34d399;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background:
    radial-gradient(1200px 600px at 10% -10%, #1e3a5f 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #0f766e33 0%, transparent 50%),
    var(--bg);
  color: var(--fg);
  font: 15px/1.45 "Segoe UI", system-ui, sans-serif;
}
.panel {
  max-width: 440px; margin: 8vh auto 0; padding: 28px;
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  border: 1px solid var(--border); border-radius: 16px;
  backdrop-filter: blur(8px);
}
h1 { margin: 0 0 6px; font-size: 26px; letter-spacing: .02em; }
h2 { margin: 22px 0 10px; font-size: 14px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .06em; }
.muted { color: var(--muted); }
form { display: grid; gap: 14px; margin-top: 18px; }
label { display: grid; gap: 6px; font-size: 13px; color: var(--muted); }
input { font: inherit; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; background: #0a101c; color: var(--fg); }
#target-id { font-size: 22px; letter-spacing: 2px; font-variant-numeric: tabular-nums; }
button { font: inherit; padding: 9px 16px; border-radius: 8px; border: 1px solid var(--border); background: var(--panel); color: var(--fg); cursor: pointer; }
button[type=submit], #connect-btn { background: var(--accent); border-color: var(--accent); color: #fff; }
button.danger { color: var(--danger); }
button.active { border-color: var(--ok); color: var(--ok); }
button:disabled { opacity: .6; cursor: default; }
.status { min-height: 1.4em; margin: 14px 0 0; }
.status.error { color: var(--danger); }

.phonebook-form { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 8px; }
.phonebook-form button { grid-column: 1 / -1; }
.pb-item { display: flex; gap: 8px; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--border); }
.pb-item button { padding: 4px 10px; }
.pb-meta { flex: 1; min-width: 0; }
.pb-meta strong { display: block; }
.pb-meta span { color: var(--muted); font-size: 12px; }

#session-view { display: flex; flex-direction: column; height: 100%; }
#session-view[hidden] { display: none; }
.toolbar { display: flex; align-items: center; gap: 10px; padding: 6px 12px; border-bottom: 1px solid var(--border); background: var(--panel); flex-wrap: wrap; }
.spacer { flex: 1; }
#session-body { flex: 1; min-height: 0; display: flex; }
#stage { flex: 1; min-width: 0; background: #000; display: flex; position: relative; }
#screen { width: 100%; height: 100%; object-fit: contain; outline: none; cursor: default; }
#screen.view-only { cursor: crosshair; }
#laser {
  position: absolute; width: 18px; height: 18px; margin: -9px 0 0 -9px;
  border-radius: 50%; background: #ff2d55; box-shadow: 0 0 12px #ff2d55;
  pointer-events: none; opacity: .85;
}
#drop-hint {
  position: absolute; inset: 12px; border: 2px dashed var(--accent);
  border-radius: 12px; display: grid; place-items: center;
  background: #0b1220cc; color: var(--fg); font-size: 18px; pointer-events: none;
}
#pip-self {
  position: absolute; right: 12px; bottom: 12px; width: 160px; height: 120px;
  object-fit: cover; border-radius: 10px; border: 1px solid var(--border); background: #000;
}
#chat-panel {
  width: 320px; border-left: 1px solid var(--border); background: var(--panel);
  display: flex; flex-direction: column;
}
#chat-panel[hidden] { display: none; }
#chat-log { flex: 1; overflow: auto; padding: 12px; display: flex; flex-direction: column; gap: 8px; }
.chat-msg { padding: 8px 10px; border-radius: 10px; background: #0a101c; border: 1px solid var(--border); }
.chat-msg .who { font-size: 11px; color: var(--muted); margin-bottom: 2px; }
#chat-form { display: flex; gap: 8px; padding: 10px; border-top: 1px solid var(--border); }
#chat-form input { flex: 1; }
#file-progress { padding: 0 12px 10px; font-size: 12px; }
@media (max-width: 800px) {
  .panel { margin: 16px; }
  #stats { display: none; }
  #chat-panel { width: 100%; position: absolute; right: 0; top: 48px; bottom: 0; z-index: 5; }
}
.verify { font-variant-numeric: tabular-nums; padding: 2px 8px; border: 1px solid var(--border); border-radius: 6px; }