:root {
  --bg: #0d1117;
  --panel: #161b22;
  --panel-2: #1c2430;
  --line: #2a3441;
  --ink: #e6edf3;
  --muted: #8b98a9;
  --accent: #3fb950;
  --accent-ink: #05210c;
  --warn: #d29922;
  --danger: #f85149;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.55 ui-sans-serif, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.wrap { max-width: 1040px; margin: 0 auto; padding: 0 20px; }

.bar { border-bottom: 1px solid var(--line); background: var(--panel); }
.bar-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 14px 20px; flex-wrap: wrap;
}
.brand { font-weight: 650; letter-spacing: .2px; }
.who { color: var(--muted); font-size: 14px; display: flex; align-items: center; gap: 8px; }
.team { color: var(--ink); font-weight: 600; }
.sep { opacity: .5; }

main { padding: 28px 20px 64px; }

h1 { font-size: 22px; margin: 0; }
h2 { font-size: 17px; margin: 0; }
.muted { color: var(--muted); }
.small { font-size: 13.5px; }

.head {
  display: flex; align-items: center; justify-content: space-between;
  margin: 26px 0 6px; gap: 12px;
}

.flash {
  background: var(--panel-2); border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  padding: 11px 14px; border-radius: 7px; margin-bottom: 18px; font-size: 14px;
}

.vpnbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px; flex-wrap: wrap;
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 10px; padding: 16px 18px;
}
.vpnbar p { margin: 4px 0 0; max-width: 62ch; }

.grid {
  display: grid; gap: 14px; margin-top: 18px;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
}

.card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 10px; padding: 16px 18px;
  display: flex; flex-direction: column; gap: 8px;
}
.card.on { border-color: var(--accent); }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.os { color: var(--muted); font-size: 12.5px; margin: 0; text-transform: uppercase; letter-spacing: .5px; }
.blurb { margin: 2px 0 0; font-size: 14px; }
.hint { margin: 0; font-size: 13px; color: var(--muted); border-left: 2px solid var(--line); padding-left: 10px; }

.card-foot {
  margin-top: auto; padding-top: 12px; border-top: 1px solid var(--line);
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
}

.status { font-size: 13.5px; color: var(--muted); }
.status.live { color: var(--accent); font-weight: 600; }
.status.warn { color: var(--warn); }
.status code { background: var(--panel-2); padding: 1px 6px; border-radius: 4px; color: var(--ink); }

.pill {
  font-size: 11.5px; text-transform: uppercase; letter-spacing: .6px;
  padding: 3px 9px; border-radius: 999px; border: 1px solid var(--line);
  color: var(--muted); white-space: nowrap;
}
.pill.easy { color: var(--accent); border-color: #1f4a2a; }
.pill.medium { color: var(--warn); border-color: #4d3d16; }
.pill.hard { color: var(--danger); border-color: #5c2320; }

.btn {
  display: inline-block; border: 1px solid var(--line); background: var(--panel-2);
  color: var(--ink); padding: 8px 15px; border-radius: 7px; font-size: 14px;
  font-weight: 550; cursor: pointer; text-decoration: none; white-space: nowrap;
}
.btn:hover { border-color: #3d4a5c; }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; }
.btn.block { display: block; width: 100%; text-align: center; margin-top: 6px; }

.link {
  background: none; border: 0; color: var(--muted); cursor: pointer;
  font: inherit; font-size: 14px; text-decoration: underline; padding: 0;
}
.link:hover { color: var(--ink); }
.inline { display: inline; }

.login {
  max-width: 380px; margin: 8vh auto 0;
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 10px; padding: 26px;
}
.login p { margin: 8px 0 20px; font-size: 14px; }
.stack { display: flex; flex-direction: column; gap: 14px; }
.stack label { display: flex; flex-direction: column; gap: 6px; font-size: 13.5px; color: var(--muted); }
.stack input {
  background: var(--bg); border: 1px solid var(--line); color: var(--ink);
  border-radius: 7px; padding: 9px 11px; font: inherit;
}
.stack input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }

@media (max-width: 560px) {
  .card-foot { flex-direction: column; align-items: stretch; }
  .card-foot .btn { width: 100%; }
}

/* --- flag submission + scoring --- */
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap; margin-bottom: 16px;
}
.submitflag { display: flex; gap: 8px; flex: 1 1 420px; }
.submitflag input {
  flex: 1; background: var(--bg); border: 1px solid var(--line); color: var(--ink);
  border-radius: 7px; padding: 9px 12px; font: inherit;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 14px;
}
.submitflag input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }

.score { display: flex; align-items: baseline; gap: 8px; white-space: nowrap; }
.score .pts { font-size: 22px; font-weight: 700; color: var(--accent); }
.score .of { color: var(--muted); font-size: 14px; }
.score .link { margin-left: 6px; }

.flags { display: flex; gap: 8px; margin-top: 2px; }
.flag {
  font-size: 12.5px; color: var(--muted); border: 1px solid var(--line);
  border-radius: 6px; padding: 3px 9px; display: inline-flex; gap: 6px;
  align-items: baseline; text-transform: capitalize;
}
.flag em { font-style: normal; opacity: .65; font-size: 11.5px; }
.flag.got { color: var(--accent); border-color: #1f4a2a; background: #10261a; }

.boardwrap { overflow-x: auto; margin-top: 16px; }
.board { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.board th, .board td {
  text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line);
}
.board th { color: var(--muted); font-weight: 600; font-size: 12.5px;
            text-transform: uppercase; letter-spacing: .5px; }
.board .num { text-align: right; }
.board .rank { color: var(--muted); width: 48px; }
.board .pts { font-weight: 700; color: var(--accent); }
.board tr.me { background: var(--panel); }
.you {
  font-size: 11px; text-transform: uppercase; letter-spacing: .5px;
  color: var(--accent-ink); background: var(--accent);
  padding: 1px 7px; border-radius: 999px; margin-left: 8px;
}

/* --- public doc pages (about / privacy) --- */
.doc { max-width: 68ch; margin: 0 auto; }
.doc h1 { margin-bottom: 6px; }
.doc h2 { font-size: 15px; margin: 26px 0 6px; color: var(--ink); }
.doc .lead { color: var(--muted); font-size: 15px; margin-top: 0; }
.doc p, .doc li { font-size: 14.5px; }
.doc ul { padding-left: 20px; }
.doc li { margin-bottom: 8px; }

/* --- self-registration --- */
.reg {
  max-width: 460px; margin: 6vh auto 0;
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 10px; padding: 26px;
}
.reg > p { margin: 8px 0 20px; font-size: 14px; }
.teams { border: 0; padding: 0; margin: 4px 0 0; }
.teams legend {
  font-size: 13.5px; color: var(--muted); padding: 0; margin-bottom: 8px;
}
.opt {
  display: flex; align-items: center; gap: 10px;
  border: 1px solid var(--line); border-radius: 7px;
  padding: 10px 12px; margin-bottom: 8px; cursor: pointer;
  flex-direction: row;
}
.opt:hover { border-color: #3d4a5c; }
.opt:has(input:checked) { border-color: var(--accent); background: #10261a; }
.opt input { accent-color: var(--accent); margin: 0; }
.opt-body { display: flex; justify-content: space-between; flex: 1; gap: 10px; }
.opt-name { font-size: 14px; color: var(--ink); }
.opt-meta { font-size: 12.5px; color: var(--muted); white-space: nowrap; }
.teams + button { margin-top: 6px; }
.reg input[type="text"], .reg input[type="password"] {
  background: var(--bg); border: 1px solid var(--line); color: var(--ink);
  border-radius: 7px; padding: 9px 11px; font: inherit; width: 100%;
}
.reg input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }