:root {
  color-scheme: dark;
  --navy: #0b1424;
  --field: #122033;
  --well: #1a1c28;
  --wood: #4a2d18;
  --wood-deep: #2a180e;
  --ink: #f3e6c4;
  --muted: #b7a888;
  --gold: #d8b45a;
  --gold-deep: #8a6a28;
  --cinnabar: #9a1f18;
  --banner: #6b1814;
  --jade: #7ec8a8;
  --warn: #e0a15a;
  --bad: #d46a5c;
  --ember: #e35a3a;
  --wei: #3d6cad;
  --shu: #3f7a4a;
  --wu: #a33b32;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  color: var(--ink);
  background:
    radial-gradient(ellipse at 50% -10%, rgba(216, 180, 90, 0.08), transparent 42%),
    linear-gradient(180deg, #0e1a2c 0%, var(--navy) 55%, #0a1018 100%);
  font-family: "Noto Serif SC", "Songti SC", "STSong", "PMingLiU", serif;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.16;
  background-image:
    linear-gradient(30deg, transparent 46%, rgba(216, 180, 90, 0.12) 50%, transparent 54%),
    linear-gradient(-30deg, transparent 46%, rgba(61, 108, 173, 0.08) 50%, transparent 54%);
  background-size: 56px 32px;
}
.stage {
  width: min(1040px, calc(100% - 24px));
  margin: 0 auto;
  padding: 18px 0 56px;
}
.mast {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
  padding: 12px 16px 14px;
  background:
    linear-gradient(180deg, #6e2018 0%, var(--banner) 55%, #4a120e 100%);
  border: 2px solid var(--gold);
  box-shadow:
    0 0 0 1px var(--gold-deep),
    inset 0 1px 0 rgba(255, 220, 140, 0.28),
    0 10px 28px rgba(0, 0, 0, 0.35);
}
.brand { display: flex; gap: 12px; align-items: center; color: inherit; text-decoration: none; }
.mark {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  background: var(--wood-deep);
  border: 2px solid var(--gold);
  color: var(--gold);
  font-family: "ZCOOL XiaoWei", "KaiTi", "STKaiti", serif;
  font-size: 28px;
  box-shadow: inset 0 0 0 1px var(--gold-deep);
}
.eyebrow {
  margin: 0;
  color: #f0d48a;
  letter-spacing: 0.18em;
  font-size: 11px;
}
h1, h2 { margin: 0; font-weight: 400; font-family: "ZCOOL XiaoWei", "KaiTi", "STKaiti", serif; }
h1 { font-size: clamp(30px, 5vw, 44px); letter-spacing: 0.12em; color: #fff1c4; text-shadow: 0 1px 0 #3a120c; }
.site-nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 6px; }
.site-nav a {
  color: #e8d7a8;
  text-decoration: none;
  padding: 5px 10px;
  border: 1px solid rgba(216, 180, 90, 0.45);
  background: rgba(20, 10, 8, 0.28);
  font-size: 13px;
  letter-spacing: 0.08em;
}
.site-nav a[aria-current="page"], .site-nav a:hover {
  color: #fff4cc;
  border-color: var(--gold);
  background: rgba(42, 18, 12, 0.55);
}
.note, #rooms-caption, #alert-state { color: var(--muted); }
.note { margin: 0 0 12px; line-height: 1.65; font-size: 14px; }
.page { display: grid; gap: 16px; }
.panel {
  position: relative;
  background:
    linear-gradient(180deg, rgba(216, 180, 90, 0.05), transparent 22%),
    var(--well);
  border: 2px solid var(--gold);
  box-shadow:
    0 0 0 1px var(--gold-deep),
    inset 0 0 0 1px rgba(216, 180, 90, 0.18),
    0 12px 30px rgba(0, 0, 0, 0.28);
  padding: 28px 22px 20px;
}
.panel-title, .section-head h2 {
  position: absolute;
  top: -12px;
  left: 16px;
  margin: 0;
  padding: 2px 12px;
  background: linear-gradient(180deg, #8a2a1c, var(--cinnabar));
  border: 1px solid var(--gold);
  color: #ffe7b0;
  font-family: "ZCOOL XiaoWei", "KaiTi", serif;
  font-size: 16px;
  letter-spacing: 0.2em;
}
.alert-rail {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.alert-kicker {
  margin: 0 0 4px;
  color: var(--gold);
  letter-spacing: 0.18em;
  font-size: 11px;
}
#alert-state { margin: 0; font-size: 15px; line-height: 1.5; }
.threshold-set {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  font-size: 14px;
}
.threshold-set input {
  width: 3.4em;
  padding: 6px 7px;
  border: 1px solid var(--gold-deep);
  background: var(--wood-deep);
  color: var(--ink);
  font: inherit;
  text-align: center;
}
.threshold-set input:focus-visible,
.switch:focus-visible,
.test-btn:focus-visible,
.stop-btn:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}
.alert-actions { display: flex; gap: 8px; flex-shrink: 0; align-items: center; }
.switch, .test-btn, .stop-btn {
  appearance: none;
  border: 1px solid var(--gold);
  background: linear-gradient(180deg, #5a3a1c, var(--wood-deep));
  color: #f3e2b0;
  font-family: "Noto Serif SC", "Songti SC", serif;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 220, 140, 0.2);
}
.switch { display: inline-flex; align-items: center; gap: 10px; padding: 8px 12px; }
.switch-track {
  width: 34px;
  height: 18px;
  background: #2a2218;
  border: 1px solid var(--gold-deep);
  position: relative;
}
.switch-track::after {
  content: "";
  position: absolute;
  top: 1px;
  left: 1px;
  width: 14px;
  height: 14px;
  background: #d8b45a;
  transition: transform 0.16s ease;
}
.switch[aria-checked="true"] { color: #ffd8c8; border-color: #e08a55; }
.switch[aria-checked="true"] .switch-track { background: var(--cinnabar); }
.switch[aria-checked="true"] .switch-track::after { transform: translateX(16px); background: #ffe7b0; }
.test-btn, .stop-btn { padding: 8px 12px; letter-spacing: 0.08em; }
.test-btn { color: var(--gold); }
.stop-btn { color: #ffb199; }
.stop-btn:disabled { color: var(--muted); cursor: not-allowed; opacity: 0.5; }
.switch:hover, .test-btn:hover, .stop-btn:hover:not(:disabled) { filter: brightness(1.12); }
.room.is-hot {
  border-color: #e08a55;
  box-shadow:
    0 0 0 1px var(--gold-deep),
    inset 4px 0 0 var(--wu);
}
.room.is-hot .count { color: #ffb199; }
body.alerting .panel.alert-rail {
  border-color: #e08a55;
  background: #2a1718;
}
body.alerting::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  box-shadow: inset 0 0 0 6px rgba(196, 50, 40, 0.85);
  animation: siren-pulse 0.62s ease-in-out infinite alternate;
  z-index: 40;
  opacity: 1;
  background-image: none;
}
body.alerting #alert-state { color: #ffd2c4; }
body.alerting .stop-btn:not(:disabled) {
  background: #3a1a14;
  color: #ffe0d6;
}
@keyframes siren-pulse {
  from { box-shadow: inset 0 0 0 5px rgba(196, 50, 40, 0.3); }
  to { box-shadow: inset 0 0 0 7px rgba(255, 80, 50, 0.95); }
}
.kind {
  margin: 4px 0 6px;
  color: var(--gold);
  letter-spacing: 0.18em;
  font-size: 12px;
}
.status {
  margin: 0 0 16px;
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1.25;
  color: #fff1c4;
  font-family: "ZCOOL XiaoWei", "KaiTi", serif;
}
.meta {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  margin: 0;
  border: 1px solid rgba(216, 180, 90, 0.28);
}
.meta div {
  padding: 10px 12px;
  border-right: 1px solid rgba(216, 180, 90, 0.18);
  background: rgba(11, 20, 36, 0.35);
}
.meta div:last-child { border-right: 0; }
dt { color: var(--gold); font-size: 12px; letter-spacing: 0.12em; }
dd { margin: 6px 0 0; word-break: break-word; font-size: 15px; }
.rooms-panel { padding-top: 32px; }
.section-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: end;
  margin: 0 0 12px;
}
.section-head h2 { position: static; }
.rooms { display: grid; gap: 10px; }
.room {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px 16px;
  padding: 14px 16px;
  background: rgba(11, 20, 36, 0.45);
  border: 1px solid rgba(216, 180, 90, 0.35);
}
.room-name {
  font-family: "ZCOOL XiaoWei", "KaiTi", serif;
  font-size: 24px;
  letter-spacing: 0.08em;
  color: #fff1c4;
}
.room-host, .room-id { color: var(--muted); font-size: 13px; }
.count {
  align-self: center;
  font-family: "ZCOOL XiaoWei", serif;
  font-size: 36px;
  color: var(--gold);
  letter-spacing: 0.06em;
}
.empty {
  border: 1px dashed rgba(216, 180, 90, 0.4);
  padding: 26px;
  color: var(--muted);
  text-align: center;
  letter-spacing: 0.12em;
}
.history-panel { padding-top: 32px; }
.history-list .room { opacity: 0.96; }
.history-list .room-id { letter-spacing: 0.02em; }
.history-open .count { color: #ffe7b0; }
.kind.is-error { color: var(--bad); }
.kind.is-expired, .kind.is-unconfirmed_empty { color: var(--warn); }
@media (max-width: 720px) {
  .mast, .meta, .room, .alert-rail { display: block; }
  .site-nav { justify-content: flex-start; margin-top: 10px; }
  .meta div { border-right: 0; border-bottom: 1px solid rgba(216, 180, 90, 0.18); }
  .count { margin-top: 8px; }
  .alert-actions { margin-top: 14px; flex-wrap: wrap; }
}