:root {
  --bg: #F6F5F1;
  --card: #FFFFFF;
  --ink: #16181D;
  --muted: #6B6F78;
  --line: #E6E2D8;
  --accent: #1F7A4D;
  --danger: #C8323C;
  --agent: #EEF4FF;
  --user: #F3F1EA;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121316;
    --card: #1B1D22;
    --ink: #ECEDEF;
    --muted: #9A9EA8;
    --line: #2C2F36;
    --accent: #3DBB7A;
    --danger: #E5545E;
    --agent: #1D2A40;
    --user: #26282E;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; }
header { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 16px; border-bottom: 1px solid var(--line); background: var(--card); position: sticky; top: 0; z-index: 1000; }
.brand { font-weight: 700; }
.brand span { font-weight: 500; color: var(--muted); font-size: 13px; margin-left: 6px; }
.status { font-size: 13px; padding: 4px 10px; border-radius: 999px; background: var(--user); color: var(--muted); white-space: nowrap; }
.status.live { background: var(--accent); color: #fff; }
.status.speaking { background: #2F5BD3; color: #fff; }
.status.err { background: var(--danger); color: #fff; }
main { max-width: 1100px; margin: 0 auto; padding: 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px; }
.card h2 { margin: 0 0 10px; font-size: 15px; }
.muted { color: var(--muted); font-size: 13px; font-weight: 400; }
#gate label { font-weight: 600; display: block; margin-bottom: 6px; }
#gate input { width: 100%; max-width: 320px; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--line); background: var(--bg); color: var(--ink); font-size: 16px; }
#gate p { margin: 6px 0 0; }
.controls { display: flex; gap: 10px; margin: 14px 0; }
.btn { flex: 1; max-width: 260px; padding: 14px; border: 0; border-radius: 12px; font-size: 16px; font-weight: 700; cursor: pointer; }
.btn:disabled { opacity: .4; cursor: default; }
.call { background: var(--accent); color: #fff; }
.hangup { background: var(--danger); color: #fff; }
.grid { display: grid; grid-template-columns: 1fr; gap: 14px; }
@media (min-width: 860px) { .grid { grid-template-columns: 1.2fr 1fr; } }
.log { display: flex; flex-direction: column; gap: 8px; max-height: 420px; overflow-y: auto; }
.msg { padding: 8px 12px; border-radius: 12px; max-width: 92%; }
.msg.agent { background: var(--agent); align-self: flex-start; }
.msg.user { background: var(--user); align-self: flex-end; }
.msg .meta { display: block; font-size: 12px; color: var(--muted); margin-top: 2px; }
.partial { min-height: 22px; color: var(--muted); font-style: italic; margin-top: 8px; }
.order { display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; margin: 0 0 10px; }
.order dt { color: var(--muted); }
.order dd { margin: 0; font-weight: 600; }
.map { height: 260px; border-radius: 10px; border: 1px solid var(--line); }
.result { margin-top: 10px; font-weight: 700; }
.result.ok { color: var(--accent); }
.result.warn { color: var(--danger); }
.dtmf-show { font: 600 22px/1.2 ui-monospace, monospace; text-align: center; padding: 6px; border: 1px dashed var(--line); border-radius: 10px; margin-bottom: 10px; letter-spacing: 4px; }
.keypad { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; max-width: 320px; margin: 0 auto; }
.keypad button { padding: 14px 0; font-size: 20px; font-weight: 600; border-radius: 12px; border: 1px solid var(--line); background: var(--bg); color: var(--ink); cursor: pointer; }
.debug { font: 12px/1.45 ui-monospace, monospace; white-space: pre-wrap; word-break: break-word; max-height: 360px; overflow-y: auto; color: var(--muted); }
.debug b { color: var(--ink); }

.mode { font: inherit; padding: 10px 12px; border-radius: 10px; border: 1px solid #c8c8c8; background: #fff; color: #111; max-width: 100%; }