:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --text: #1f2933;
  --muted: #64748b;
  --line: #d9e0e7;
  --accent: #1d4ed8;
  --accent-soft: #e8efff;
  --danger: #b42318;
  --ok: #067647;
  --warn: #b54708;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

header.topbar {
  background: #111827;
  color: #f8fafc;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 24px;
}
header.topbar .brand { font-weight: 700; letter-spacing: .02em; }
header.topbar nav { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
header.topbar a { color: #dbeafe; }
header.topbar form { display: inline; }

main { max-width: 1240px; margin: 24px auto; padding: 0 20px 60px; }

h1 { font-size: 24px; margin: 0 0 16px; }
h2 { font-size: 18px; margin: 0 0 12px; }
h3 { font-size: 15px; margin: 0 0 8px; }
p { margin: 0 0 12px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 18px;
}
.card.flush { padding: 0; overflow: hidden; }

.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.spread { display: flex; justify-content: space-between; gap: 12px; align-items: flex-start; flex-wrap: wrap; }

label { display: block; font-size: 12px; font-weight: 600; color: #334155; margin-bottom: 4px; }
input[type=text], input[type=password], input[type=number], input[type=email], input[type=url], select, textarea {
  width: 100%;
  border: 1px solid #cbd5e1;
  border-radius: 7px;
  padding: 8px 10px;
  font: inherit;
  background: #fff;
}
textarea { min-height: 74px; resize: vertical; }
input[type=checkbox] { transform: translateY(1px); }

.form-grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); align-items: end; }
.form-grid .wide { grid-column: 1 / -1; }
.checkline { font-weight: 400; margin-top: 6px; }
.checkline input { margin-right: 6px; }

button, .button {
  border: 1px solid transparent;
  border-radius: 7px;
  background: var(--accent);
  color: #fff;
  padding: 8px 13px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  display: inline-block;
}
button:hover, .button:hover { filter: brightness(.95); text-decoration: none; }
button.secondary, .button.secondary { background: #fff; color: var(--text); border-color: #cbd5e1; }
button.danger, .button.danger { background: var(--danger); }
button.small, .button.small { padding: 5px 9px; font-size: 12px; }
button:disabled { opacity: .5; cursor: not-allowed; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); background: #f8fafc; }
tr:last-child td { border-bottom: 0; }
.table-wrap { overflow-x: auto; }

.badge { display: inline-block; border-radius: 999px; padding: 2px 8px; font-size: 11px; font-weight: 700; }
.badge.ok { background: #dcfae6; color: var(--ok); }
.badge.off { background: #f1f5f9; color: var(--muted); }
.badge.warn { background: #fef0c7; color: var(--warn); }
.badge.err { background: #fee4e2; color: var(--danger); }

.flash { padding: 10px 12px; border-radius: 8px; margin-bottom: 12px; border: 1px solid; }
.flash.success { background: #ecfdf3; border-color: #abefc6; color: var(--ok); }
.flash.error { background: #fef3f2; border-color: #fecdca; color: var(--danger); }

.url-box {
  display: flex;
  gap: 8px;
  align-items: center;
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 7px 9px;
  margin: 4px 0;
  min-width: 0;
}
.url-box code {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 12px;
}
.copy { background: #e2e8f0; color: #0f172a; border: 0; padding: 4px 7px; font-size: 11px; }

.stats { display: flex; gap: 18px; flex-wrap: wrap; margin: 10px 0; }
.stat { min-width: 90px; }
.stat b { display: block; font-size: 20px; }
.stat span { color: var(--muted); font-size: 12px; }

.login-wrap { max-width: 380px; margin: 70px auto; }
.login-wrap h1 { text-align: center; }
.stack { display: grid; gap: 12px; }
.inline-form { display: inline; }
.nowrap { white-space: nowrap; }
.right { text-align: right; }
.mt { margin-top: 14px; }
.hr { height: 1px; background: var(--line); margin: 16px 0; border: 0; }
details summary { cursor: pointer; color: var(--accent); }

@media (max-width: 700px) {
  header.topbar { padding: 10px 14px; gap: 10px; }
  main { padding: 0 12px 40px; }
  th, td { padding: 7px 8px; }
}