:root {
  --bg: #14161a; --fg: #e8eaed; --dim: #9aa0a6; --line: #2a2e35;
  --accent: #4a9eff; --warn: #f0b429; --err: #ff6b6b; --ok: #35c46a;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--fg);
  font: 15px/1.5 system-ui, -apple-system, Segoe UI, Roboto, sans-serif; }
.hidden { display: none !important; }

/* lobby */
.lobby { max-width: 560px; margin: 0 auto; padding: 32px 20px 60px; }
.lobby h1 { font-size: 26px; margin: 0 0 6px; }
.lobby .sub { color: var(--dim); margin: 0 0 24px; }
form { display: grid; gap: 14px; }
label { display: grid; gap: 5px; font-size: 13px; color: var(--dim); }
input, select { background: #1d2025; color: var(--fg); border: 1px solid var(--line);
  border-radius: 8px; padding: 10px 12px; font-size: 15px; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.chk { display: flex; align-items: center; gap: 8px; color: var(--fg); }
.chk input { width: 18px; height: 18px; }
.hint { grid-column: 1 / -1; color: var(--dim); font-size: 13px; margin-top: -6px; }
button { background: var(--accent); color: #fff; border: 0; border-radius: 8px;
  padding: 12px 16px; font-size: 15px; cursor: pointer; }
button:disabled { opacity: .5; cursor: default; }

/* call */
.call { display: grid; grid-template-rows: 1fr auto auto; height: 100%; gap: 10px; padding: 10px; }
.stage { position: relative; min-height: 220px; background: #000; border-radius: 12px; overflow: hidden; }
.stage video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; background: #000; }
#localVideo { width: 26%; height: auto; aspect-ratio: 16/9; inset: auto 12px 12px auto;
  border: 1px solid var(--line); border-radius: 8px; z-index: 2; }
.audioOnly { position: absolute; inset: 0; display: grid; place-items: center; color: var(--dim); }
.audioOnly::after { content: "аудио без видео"; }

.bar { display: flex; flex-wrap: wrap; gap: 8px; }
.bar button { background: #23272e; }
.bar button.on { background: var(--accent); }
.bar button.off { background: #3a2020; color: var(--err); }
.bar button.danger { background: #3a2020; color: var(--err); }

.stats { background: #1a1d22; border: 1px solid var(--line); border-radius: 10px;
  padding: 12px 14px; margin: 0; font: 12.5px/1.65 ui-monospace, SFMono-Regular, Menlo, monospace;
  color: var(--dim); white-space: pre-wrap; overflow-x: auto; }
.msg { min-height: 22px; color: var(--ok); font-size: 14px; }
.msg.warn { color: var(--warn); }
.msg.err { color: var(--err); }

/* device picker */
.devices { display: grid; gap: 12px; padding: 14px; border: 1px solid var(--line);
  border-radius: 12px; background: #1a1d22; }
button.perm { background: #23272e; }
.meter { display: flex; align-items: center; gap: 10px; }
.meterBar { flex: 1; height: 14px; background: #101215; border: 1px solid var(--line);
  border-radius: 7px; overflow: hidden; }
#micMeterFill { height: 100%; width: 0; background: linear-gradient(90deg, var(--ok), var(--warn) 70%, var(--err)); }
.meter button { background: #23272e; padding: 9px 14px; font-size: 14px; }
.meter button.on { background: var(--accent); }
.micInfo { color: var(--dim); font-size: 12.5px; }
.bar select.devsel { flex: 1 1 220px; max-width: 340px; }

/* output device + incoming L/R analysis */
#testAudio { display: none; }
.rxrow { display: grid; gap: 6px; }
.rxmeters { display: flex; align-items: center; gap: 8px; }
.rxmeters > span { color: var(--dim); font: 12px ui-monospace, SFMono-Regular, Menlo, monospace; }
.rxmeters .meterBar { height: 10px; border-radius: 5px; }
#rxLMeter, #rxRMeter { height: 100%; width: 0; background: linear-gradient(90deg, var(--ok), var(--warn) 70%, var(--err)); }
.rxmeters button { background: #23272e; padding: 8px 12px; font-size: 13px; white-space: nowrap; }
.rxmeters button.off { background: #3a2020; color: var(--err); }

/* gain sliders (mic boost + playback boost) */
.gainrow { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.gain { display: flex; align-items: center; gap: 10px; }
.gain input[type=range] { flex: 1; min-width: 0; height: 26px; padding: 0; background: transparent;
  border: 0; border-radius: 0; accent-color: var(--accent); cursor: pointer; }
.gain output { font: 12.5px ui-monospace, SFMono-Regular, Menlo, monospace; color: var(--fg);
  min-width: 54px; text-align: right; white-space: nowrap; }
.call .gainrow { gap: 14px; padding: 10px 12px; border: 1px solid var(--line);
  border-radius: 10px; background: #1a1d22; }