:root {
  color-scheme: light dark;
  --bg: #f6f5f8; --card: #fff; --fg: #1c1b1f; --muted: #6a6870; --line: #dcdae3; --accent: #b3261e; --accent-fg: #fff;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #17161a; --card: #222126; --fg: #ebe9f0; --muted: #a09da8; --line: #3a3840; --accent: #e0645c; --accent-fg: #17161a; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.55 system-ui, sans-serif; }
header { display: flex; flex-wrap: wrap; gap: 8px 20px; align-items: center; justify-content: space-between; padding: 14px 16px; border-bottom: 1px solid var(--line); }
header a { color: inherit; text-decoration: none; }
header nav { display: flex; flex-wrap: wrap; gap: 16px; font-size: 14px; }
.brand { font-weight: 700; }
main { max-width: 860px; margin: 0 auto; padding: 8px 16px 64px; }
h1 { font-size: 26px; line-height: 1.25; margin: 28px 0 12px; }
h2 { font-size: 17px; margin: 0 0 8px; }
main > h2 { margin-top: 28px; }
a { color: var(--accent); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px; margin: 16px 0; }
.stats { display: flex; flex-wrap: wrap; gap: 12px 28px; }
.stats div { display: flex; flex-direction: column; }
.stats b { font-size: 24px; }
.stats span, .muted { color: var(--muted); font-size: 13px; }
.warn { color: var(--accent); font-weight: 600; }
label { display: block; margin: 0 0 12px; font-size: 14px; }
input, textarea, select, button { font: inherit; color: inherit; }
input, textarea, select { display: block; width: 100%; margin-top: 4px; padding: 8px 10px; background: var(--bg); border: 1px solid var(--line); border-radius: 6px; }
button { padding: 8px 14px; border: 1px solid var(--accent); border-radius: 6px; background: var(--accent); color: var(--accent-fg); font-weight: 600; cursor: pointer; }
button.secondary { background: transparent; color: var(--fg); border-color: var(--line); }
button.danger { background: transparent; color: var(--accent); }
button:disabled { opacity: .55; cursor: default; }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 8px 0; }
.row input, .row select { width: auto; flex: 1 1 140px; margin-top: 0; }
.scroll { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 13px; }
th, td { text-align: left; padding: 6px 10px 6px 0; border-bottom: 1px solid var(--line); white-space: nowrap; vertical-align: middle; }
td form.row { margin: 0; flex-wrap: nowrap; }
td form.row input { flex: 0 0 64px; padding: 4px 6px; }
td form.row button { padding: 4px 8px; }
details { margin-top: 16px; }
summary { cursor: pointer; color: var(--muted); }
.contest { border-top: 1px solid var(--line); padding-top: 8px; }
.contest p { margin: 4px 0; white-space: pre-wrap; overflow-wrap: anywhere; }
code { font-size: .92em; }
#msg:empty { display: none; }