:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --ink: #1b1f24;
  --muted: #5d6673;
  --line: #dde1e6;
  --accent: #2f6fed;
  --accent-ink: #ffffff;
  --good: #1f8a4c;
  --bad: #c8372d;
  --warn: #b7791f;
  --soft: #eef2f8;
  --radius: 10px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121418;
    --card: #1b1e24;
    --ink: #e8eaed;
    --muted: #9aa3ae;
    --line: #2c313a;
    --accent: #5b8ff9;
    --accent-ink: #0b1220;
    --soft: #232833;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Tahoma, Arial, sans-serif;
}

.hidden { display: none !important; }
.ltr { direction: ltr; unicode-bidi: isolate; text-align: start; }
html[dir="rtl"] .ltr { text-align: end; }
.muted { color: var(--muted); margin: 4px 0 12px; }
.error { color: var(--bad); min-height: 1.2em; margin: 8px 0 0; }

.top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px 16px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--line);
  background: var(--card);
}
.brand { display: flex; gap: 12px; align-items: center; flex: 1 1 18rem; min-width: 0; }
.brand .dot { width: 14px; height: 14px; border-radius: 50%; background: var(--warn); flex: none; }
h1 { font-size: 18px; margin: 0; }
h2 { font-size: 16px; margin: 0 0 4px; }
.sub { margin: 0; color: var(--muted); font-size: 13px; }
.top-actions { display: flex; gap: 8px; flex: none; }
.top-actions button { white-space: nowrap; }
@media (max-width: 480px) { .top { padding: 12px 16px; } }

main { max-width: 1100px; margin: 0 auto; padding: 24px 16px 48px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}
.card.narrow { max-width: 380px; margin: 40px auto; }

.grid { display: grid; grid-template-columns: minmax(280px, 360px) 1fr; gap: 16px; align-items: start; }
@media (max-width: 760px) { .grid { grid-template-columns: 1fr; } }

.row { display: flex; gap: 8px; align-items: center; margin: 10px 0; }
.row.wrap { flex-wrap: wrap; }
.row.two > * { flex: 1; }
.row label { white-space: nowrap; }

label { font-weight: 600; font-size: 14px; }
form label { display: block; margin-bottom: 6px; }
input, select {
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 12px;
  background: var(--card);
  color: var(--ink);
  font: inherit;
  min-width: 0;
  flex: 1;
}
form input { width: 100%; margin-bottom: 12px; }

button {
  min-height: 40px;
  border-radius: 8px;
  border: 1px solid transparent;
  padding: 8px 16px;
  font: inherit;
  font-weight: 600;
  line-height: 1.25;
  cursor: pointer;
}
button:disabled { opacity: 0.45; cursor: not-allowed; }
button:focus-visible, input:focus-visible, select:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.primary { background: var(--accent); color: var(--accent-ink); width: 100%; }
.secondary { background: var(--soft); color: var(--ink); border-color: var(--line); }
.ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.answer { background: var(--good); color: #fff; }
.hangup { background: var(--bad); color: #fff; }

.tabs { display: flex; gap: 4px; margin-bottom: 16px; border-bottom: 1px solid var(--line); overflow-x: auto; }
.tabs button {
  background: none; border: none; border-bottom: 3px solid transparent; border-radius: 0;
  color: var(--muted); white-space: nowrap;
}
.tabs button.active { color: var(--ink); border-bottom-color: var(--accent); }

.status-row { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin: 12px 0; }
.pill { font-size: 13px; font-weight: 600; padding: 4px 10px; border-radius: 999px; background: var(--soft); color: var(--muted); }
.pill[data-state="ready"] { background: color-mix(in srgb, var(--good) 15%, transparent); color: var(--good); }
.pill[data-state="busy"] { background: color-mix(in srgb, var(--warn) 18%, transparent); color: var(--warn); }
.pill[data-state="failed"] { background: color-mix(in srgb, var(--bad) 15%, transparent); color: var(--bad); }

.display { margin: 12px 0; }
.display input { width: 100%; font-size: 22px; height: 52px; text-align: center; }
.call-state { text-align: center; color: var(--muted); min-height: 1.4em; margin: 6px 0 0; font-variant-numeric: tabular-nums; }

.pad { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; direction: ltr; }
.pad button { min-height: 52px; font-size: 20px; background: var(--soft); color: var(--ink); border-color: var(--line); }

.incoming {
  border: 2px solid var(--good);
  border-radius: var(--radius);
  padding: 12px;
  margin: 12px 0;
  text-align: center;
  animation: pulse 1.2s ease-in-out infinite;
}
.ring-label { margin: 0; font-weight: 600; color: var(--good); }
.ring-number { margin: 4px 0 8px; font-size: 20px; text-align: center; }
@keyframes pulse { 50% { border-color: transparent; } }
@media (prefers-reduced-motion: reduce) { .incoming { animation: none; } }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 8px 10px; border-bottom: 1px solid var(--line); text-align: center; }
th { color: var(--muted); font-weight: 600; font-size: 13px; }
.numbers td:first-child { direction: ltr; unicode-bidi: isolate; font-variant-numeric: tabular-nums; }
.table-wrap { overflow-x: auto; }
td.ltr { text-align: center; }
.tag { font-size: 12px; padding: 2px 8px; border-radius: 999px; background: var(--soft); }
.tag.answered, .tag.ended { color: var(--good); }
.tag.failed, .tag.not-answered { color: var(--bad); }
.tag.ringing, .tag.scheduled { color: var(--warn); }
.log button { min-height: 30px; padding: 4px 10px; font-size: 13px; }

.presets { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; }
.preset { display: flex; flex-direction: column; gap: 8px; margin: 0; }
.preset p { margin: 0; color: var(--muted); flex: 1; }
.preset input { flex: none; }

.mono { font-variant-numeric: tabular-nums; }
.error.ok { color: var(--good); }

.gateway { max-width: 720px; }
.facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: 12px;
  margin: 16px 0;
}
.fact {
  min-width: 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
}
.facts dt { color: var(--muted); font-size: 13px; margin-bottom: 6px; }
.facts dd { margin: 0; font-weight: 600; overflow-wrap: anywhere; }
.facts .pill { display: inline-block; }
.pill[data-state="off"] { background: var(--card); }
.chips { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; }
.chips li { text-align: start; }

.gw-step { margin: 0; padding: 16px 0 0; border-top: 1px solid var(--line); }
.gw-step + .gw-step { margin-top: 16px; }
.gw-step label, .step-label { display: block; margin: 0 0 8px; font-weight: 600; font-size: 14px; }
.inline-field { display: flex; flex-wrap: wrap; gap: 8px; }
.inline-field input { flex: 1 1 14rem; width: auto; margin: 0; }
#gw-form .primary { flex: 0 0 auto; width: auto; min-width: 7rem; }
.button-row { display: flex; flex-wrap: wrap; gap: 8px; }
.button-row > button { flex: 1 1 12rem; }