:root {
  color-scheme: dark;
  font-family: system-ui, -apple-system, sans-serif;
  background: #101a28;
  color: #f2f6fc;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; }
main { max-width: 700px; margin: auto; padding: 24px 16px; }
.heading { padding: 12px 4px 20px; }
.eyebrow { color: #79dfce; font-size: 12px; letter-spacing: .18em; font-weight: 800; }
h1 { font-size: clamp(27px, 6vw, 40px); margin: 8px 0; }
h2 { font-size: 18px; margin: 0 0 8px; }
p { margin: 6px 0; }
.heading > p:last-child, .hint { color: #a9b9cd; font-size: 14px; line-height: 1.55; }
.panel { background: #182639; border: 1px solid #314256; border-radius: 16px; padding: 16px; margin-bottom: 12px; }
.room-top { display: flex; justify-content: space-between; align-items: center; }
form { display: grid; gap: 10px; margin-top: 10px; }
label { display: grid; gap: 5px; }
input, textarea, button { font: inherit; border-radius: 10px; min-height: 44px; }
input, textarea { width: 100%; min-width: 0; padding: 9px 11px; color: inherit; background: #101a28; border: 1px solid #526477; }
textarea { resize: vertical; min-height: 74px; }
button { cursor: pointer; padding: 8px 13px; border: 1px solid transparent; background: #83e2d0; color: #102822; font-weight: 700; }
button:disabled { opacity: .5; cursor: wait; }
.secondary { background: transparent; color: #d1e1f6; border-color: #526477; }
.actions { display: flex; gap: 8px; margin-top: 8px; }
.compose { grid-template-columns: minmax(0, 1fr) auto; }
.check { display: flex; align-items: center; gap: 8px; }
.check input { width: 19px; height: 19px; min-height: 0; }
ol { padding: 0; list-style: none; margin: 8px 0; max-height: 370px; overflow: auto; }
li { border-bottom: 1px solid #314256; padding: 9px 2px; overflow-wrap: anywhere; }
li .meta { color: #a9b9cd; font-size: 12px; }
li.announcement { color: #fce3a0; }
li:target { outline: 2px solid #fce3a0; outline-offset: -2px; }
#error { color: #ffbcb5; min-height: 24px; }