:root {
  --bg: #f7f7f8; --surface: #ffffff; --fg: #1d1d1f; --muted: #6b6b70; --line: #e2e2e6;
  --accent: #2f6fed; --accent-fg: #ffffff; --danger: #d93a3a; --ok: #1f9d55;
  --user: #eef3ff; --bot: #f1f1f3;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121214; --surface: #1b1b1f; --fg: #ececf0; --muted: #9a9aa2; --line: #2c2c31;
    --accent: #6d9bff; --accent-fg: #0d1420; --danger: #ff6b6b; --ok: #4ccf86;
    --user: #1c2640; --bot: #232327;
  }
}
* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.5 system-ui, -apple-system, sans-serif; background: var(--bg); color: var(--fg); }
a { color: var(--accent); }
h1 { font-size: 20px; margin: 0; }
h2 { font-size: 16px; margin: 0 0 8px; }
.muted { color: var(--muted); font-size: 13px; }
.hidden { display: none !important; }
button, select, input { font: inherit; color: inherit; }
button, select, input[type=text], input[type=email], input[type=password], input[type=number] {
  padding: 7px 11px; border-radius: 8px; border: 1px solid var(--line); background: var(--surface);
}
button { cursor: pointer; }
button.primary { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }
button.danger { color: var(--danger); }
button:disabled { opacity: .5; cursor: default; }
header.bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 16px;
  border-bottom: 1px solid var(--line); background: var(--surface); }
header.bar nav { display: flex; gap: 12px; align-items: center; font-size: 14px; }
main.center { max-width: 520px; margin: 0 auto; padding: 48px 16px; text-align: center; }

/* call page */
.stage { display: flex; flex-direction: column; align-items: center; gap: 18px; padding: 40px 16px 16px; }
.callbtn { width: 132px; height: 132px; border-radius: 50%; border: none; font-size: 17px; font-weight: 600;
  background: var(--ok); color: #fff; box-shadow: 0 6px 24px rgba(0,0,0,.15); transition: transform .1s, background .2s; }
.callbtn:active { transform: scale(.96); }
.callbtn.live { background: var(--danger); animation: pulse 1.6s infinite; }
.callbtn.busy { background: var(--muted); }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(217,58,58,.45); } 70% { box-shadow: 0 0 0 22px rgba(217,58,58,0); } 100% { box-shadow: 0 0 0 0 rgba(217,58,58,0); } }
.status { min-height: 1.5em; color: var(--muted); }
.captions { width: 100%; max-width: 560px; display: flex; flex-direction: column; gap: 6px; padding: 0 16px 32px; margin: 0 auto; }
.msg { padding: 7px 11px; border-radius: 10px; max-width: 88%; white-space: pre-wrap; }
.msg.user { background: var(--user); align-self: flex-end; }
.msg.assistant { background: var(--bot); align-self: flex-start; }
.msg.tool { font: 12px ui-monospace, monospace; color: var(--muted); align-self: flex-start; }

/* admin */
.wrap { max-width: 920px; margin: 0 auto; padding: 16px; display: grid; gap: 16px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 16px; }
.grid2 { display: grid; grid-template-columns: 160px 1fr; gap: 10px 12px; align-items: center; }
@media (max-width: 600px) { .grid2 { grid-template-columns: 1fr; } }
.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.checks { display: flex; gap: 14px; flex-wrap: wrap; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 6px 6px; border-bottom: 1px solid var(--line); vertical-align: top; }
.scroll { overflow-x: auto; }
.pill { display: inline-block; padding: 1px 8px; border-radius: 99px; font-size: 12px; border: 1px solid var(--line); }
.pill.ok { color: var(--ok); border-color: var(--ok); }
.pill.bad { color: var(--danger); border-color: var(--danger); }
.toast { position: fixed; bottom: 16px; left: 50%; transform: translateX(-50%); background: var(--fg); color: var(--bg);
  padding: 8px 14px; border-radius: 8px; font-size: 14px; }