:root {
  --bg: #f5f3ef;
  --card: #ffffff;
  --ink: #2b2a28;
  --sub: #77736b;
  --line: #e2ded6;
  --accent: #2f7d5b;
  --accent-ink: #ffffff;
  --danger: #c4483e;
  --wait: #d18a1c;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", "Hiragino Sans", "Noto Sans JP", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}
.wrap { max-width: 860px; margin: 0 auto; padding: 24px 16px 64px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px;
  margin-bottom: 16px;
}
h1 { font-size: 1.35rem; margin: 0 0 16px; }
h2 { font-size: 1.05rem; margin: 0 0 12px; }
.sub { color: var(--sub); font-size: .9rem; }
input[type=text], input[type=password] {
  font: inherit; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; width: 100%;
  background: #fff;
}
button {
  font: inherit; cursor: pointer; border: 1px solid var(--line); background: #fff; color: var(--ink);
  padding: 8px 14px; border-radius: 10px;
}
button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
button.danger { color: var(--danger); }
button:disabled { opacity: .5; cursor: default; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.grow { flex: 1; min-width: 180px; }
.err { color: var(--danger); min-height: 1.4em; }

/* 管理画面 */
.link { border-top: 1px solid var(--line); padding: 14px 0; }
.link:first-child { border-top: none; }
.link .label { font-weight: 600; }
.link .url { font-family: ui-monospace, Consolas, monospace; font-size: .82rem; color: var(--sub); word-break: break-all; }
.link.off .label, .link.off .url { text-decoration: line-through; color: #aaa; }
.badge { display: inline-block; font-size: .78rem; padding: 1px 8px; border-radius: 999px; background: #eee; color: var(--sub); }
.badge.wait { background: var(--wait); color: #fff; animation: blink 1s infinite; }
.badge.talk { background: var(--accent); color: #fff; }
.badge.in { background: #dfeee6; color: var(--accent); }
@keyframes blink { 50% { opacity: .55; } }
.alert {
  display: none; background: var(--wait); color: #fff; border-radius: 12px; padding: 12px 16px; margin-bottom: 16px;
  font-weight: 600;
}
.alert.show { display: block; }
.alert a { color: #fff; }
table.log { width: 100%; border-collapse: collapse; font-size: .8rem; }
table.log td { border-top: 1px solid var(--line); padding: 4px 6px; vertical-align: top; }
table.log td.d { color: var(--sub); word-break: break-all; }

/* 通話画面 */
.call { text-align: center; padding-top: 8vh; }
.call .title { font-size: 1.1rem; color: var(--sub); margin-bottom: 8px; }
.call .status { font-size: 1.5rem; font-weight: 600; margin: 12px 0 4px; min-height: 2.2em; }
.call .detail { color: var(--sub); font-size: .9rem; min-height: 1.6em; }
.call .timer { font-variant-numeric: tabular-nums; font-size: 1.1rem; color: var(--sub); min-height: 1.6em; }
.orb {
  width: 140px; height: 140px; border-radius: 50%; margin: 28px auto; background: #e6e2da;
  display: flex; align-items: center; justify-content: center; font-size: 3rem; transition: background .3s;
}
.orb.waiting { background: #f1dfbf; animation: pulse 1.6s infinite; }
.orb.talking { background: #cfe7da; }
@keyframes pulse { 0%,100% { transform: scale(1); } 50% { transform: scale(1.06); } }
.controls { display: flex; gap: 14px; justify-content: center; margin-top: 20px; flex-wrap: wrap; }
.controls button { min-width: 120px; padding: 14px 18px; border-radius: 999px; font-size: 1.05rem; }
.big { font-size: 1.2rem; padding: 16px 40px; border-radius: 999px; }
.level { width: 160px; height: 6px; background: #e6e2da; border-radius: 3px; margin: 12px auto 0; overflow: hidden; }
.level i { display: block; height: 100%; width: 0; background: var(--accent); transition: width .1s; }