:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --text: #1d2330;
  --muted: #667085;
  --border: #d9dde5;
  --primary: #2459d6;
  --primary-hover: #1c47ad;
  --danger-bg: #fdecec;
  --danger: #a61b1b;
  --ok-bg: #e7f6ec;
  --ok: #1e6b3a;
  --info-bg: #e9f0fd;
  --info: #1d3f8f;
  --warn-bg: #fff4e0;
  --warn: #8a5300;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171d;
    --surface: #1d2129;
    --text: #e6e8ec;
    --muted: #9aa3b2;
    --border: #333a46;
    --primary: #5b8cff;
    --primary-hover: #7aa2ff;
    --danger-bg: #3a1d1f;
    --danger: #ff9a9a;
    --ok-bg: #173022;
    --ok: #7fd6a0;
    --info-bg: #1b2a4a;
    --info: #a9c3ff;
    --warn-bg: #3a2c12;
    --warn: #ffc76b;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  background: var(--bg);
  color: var(--text);
}

a { color: var(--primary); }

.topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 12px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.topbar .brand { font-weight: 700; font-size: 18px; text-decoration: none; color: var(--text); }
.topbar nav { display: flex; gap: 16px; flex: 1; }
.topbar nav a { text-decoration: none; }
.topbar .me { display: flex; gap: 16px; align-items: center; color: var(--muted); }

.page { max-width: 1100px; margin: 0 auto; padding: 24px 16px; }
.page.narrow { max-width: 420px; padding-top: 10vh; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
  max-width: 420px;
  margin: 0 auto 24px;
}
.card.wide { max-width: 640px; margin-left: 0; }

h1 { font-size: 24px; margin: 0 0 16px; }
h2 { font-size: 18px; margin: 0 0 8px; }

label { display: block; margin-bottom: 14px; font-weight: 500; }
label.check { display: flex; gap: 8px; align-items: center; font-weight: 400; }

input[type=text], input[type=email], input[type=password], select {
  display: block;
  width: 100%;
  margin-top: 4px;
  padding: 9px 11px;
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
}
input:focus, select:focus { outline: 2px solid var(--primary); outline-offset: 1px; }

button, .button {
  display: inline-block;
  padding: 9px 16px;
  font: inherit;
  font-weight: 600;
  color: #fff;
  background: var(--primary);
  border: none;
  border-radius: 6px;
  cursor: pointer;
  text-decoration: none;
}
button:hover, .button:hover { background: var(--primary-hover); }
button.secondary { background: transparent; color: var(--danger); border: 1px solid var(--danger); }
button.secondary:hover { background: var(--danger-bg); }
button.link { background: none; color: var(--primary); padding: 0; font-weight: 400; }
button.link:hover { text-decoration: underline; background: none; }
form.inline { display: inline; }

.muted { color: var(--muted); font-weight: 400; }

.alert { padding: 10px 14px; border-radius: 6px; margin-bottom: 16px; }
.alert.error { background: var(--danger-bg); color: var(--danger); }
.alert.success { background: var(--ok-bg); color: var(--ok); }
.alert.info { background: var(--info-bg); color: var(--info); }

.heading { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; gap: 12px; }
.heading h1 { margin: 0; }

.table-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { font-size: 13px; color: var(--muted); font-weight: 600; }
tr:last-child td { border-bottom: none; }
tr.inactive td { color: var(--muted); }
td.actions { text-align: right; }

.badge { font-size: 12px; padding: 2px 8px; border-radius: 99px; font-weight: 600; }
.badge.on { background: var(--ok-bg); color: var(--ok); }
.badge.off { background: var(--danger-bg); color: var(--danger); }
.badge.warn { background: var(--warn-bg); color: var(--warn); }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; margin-top: 24px; }
.tile {
  display: block;
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  text-decoration: none;
}
a.tile:hover { border-color: var(--primary); }
.tile p { margin: 0; color: var(--muted); }
.tile.disabled { opacity: 0.6; }

.secret code {
  display: inline-block;
  font-size: 20px;
  padding: 10px 14px;
  background: var(--bg);
  border: 1px dashed var(--border);
  border-radius: 6px;
  user-select: all;
}