:root {
  color-scheme: light;
  --bg: #f7f8fb;
  --panel: #ffffff;
  --text: #172033;
  --muted: #687386;
  --line: #d9dee8;
  --accent: #126b6f;
  --accent-strong: #0c4f52;
  --danger: #b42318;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}

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

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 58px;
  padding: 0 28px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}

.brand { font-weight: 800; color: var(--text); }
nav { display: flex; align-items: center; gap: 18px; }
nav form { margin: 0; }

.shell { max-width: 1120px; margin: 0 auto; padding: 32px 24px; }
.page-head { display: flex; justify-content: space-between; align-items: center; gap: 20px; margin-bottom: 22px; }
h1 { margin: 0; font-size: 30px; }
h2 { margin-top: 32px; font-size: 20px; }

.actions { display: flex; gap: 10px; flex-wrap: wrap; }
.button, button {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  border-radius: 6px;
  padding: 9px 13px;
  font: inherit;
  cursor: pointer;
}
.button.primary, button[type="submit"] { background: var(--accent); border-color: var(--accent); color: #fff; }
.button.primary:hover, button[type="submit"]:hover { background: var(--accent-strong); text-decoration: none; }
button.danger { background: var(--danger); border-color: var(--danger); color: #fff; }

.stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.stats div, .auth-panel, .narrow {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
}
.stats strong { display: block; font-size: 30px; }
.stats span, .muted { color: var(--muted); }

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); }
th { font-size: 13px; color: var(--muted); background: #eef2f6; }
tr:last-child td { border-bottom: 0; }

.filters { display: grid; grid-template-columns: 1fr 160px 160px auto; gap: 10px; margin-bottom: 18px; }
input, select {
  width: 100%;
  padding: 10px 11px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  font: inherit;
}

.form { display: grid; gap: 14px; }
.form label { display: grid; gap: 6px; font-weight: 600; }
.auth-panel, .narrow { max-width: 440px; margin: 40px auto; }
.error { color: var(--danger); }

.status { font-weight: 700; font-size: 12px; }
.status.active { color: #067647; }
.status.revoked { color: var(--danger); }
.detail { display: grid; grid-template-columns: 160px 1fr; max-width: 720px; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; }
.detail dt, .detail dd { margin: 0; padding: 12px 14px; border-bottom: 1px solid var(--line); }
.detail dt { color: var(--muted); font-weight: 700; }
.danger-form { margin-top: 20px; }

@media (max-width: 760px) {
  .topbar, .page-head, nav { align-items: flex-start; flex-direction: column; }
  .stats, .filters { grid-template-columns: 1fr; }
  table { display: block; overflow-x: auto; }
}