:root {
  --kd-teal: #2eb7a3;
  --kd-ink: #1e293b;
  --kd-muted: #64748b;
  --kd-line: #e2e8f0;
  --kd-bg: #f8fafc;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, Segoe UI, sans-serif;
  background: var(--kd-bg);
  color: var(--kd-ink);
}

.admin-header {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 16px 28px;
  background: #fff;
  border-bottom: 1px solid var(--kd-line);
}

.admin-header .brand {
  font-weight: 700;
  color: var(--kd-ink);
  text-decoration: none;
}

.admin-header nav {
  display: flex;
  gap: 16px;
  flex: 1;
}

.admin-header a { color: var(--kd-muted); text-decoration: none; }
.admin-header a:hover { color: var(--kd-teal); }
.admin-header button {
  border: 0;
  background: var(--kd-teal);
  color: #fff;
  padding: 8px 14px;
  border-radius: 4px;
  cursor: pointer;
}

.admin-main { padding: 28px; max-width: 1100px; }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.card {
  background: #fff;
  border: 1px solid var(--kd-line);
  border-radius: 8px;
  padding: 20px;
  text-decoration: none;
  color: inherit;
}

.card-label, .card-meta { color: var(--kd-muted); display: block; }
.card strong { font-size: 32px; display: block; margin: 8px 0; }

.data {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}

.data th, .data td {
  text-align: left;
  padding: 12px;
  border-bottom: 1px solid var(--kd-line);
}

.data tr.unread { font-weight: 600; }
.data a { color: var(--kd-teal); }

.detail {
  background: #fff;
  padding: 24px;
  border-radius: 8px;
  border: 1px solid var(--kd-line);
}

.detail dt { color: var(--kd-muted); margin-top: 12px; }
.detail dd { margin: 4px 0 0; }

.linkish {
  background: none;
  border: 0;
  color: var(--kd-teal);
  cursor: pointer;
  padding: 0;
}

.page-heading { display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.page-heading h1 { margin-bottom: 4px; }
.muted { color: var(--kd-muted); margin-top: 0; }
.button {
  display: inline-block; border: 0; border-radius: 4px; padding: 10px 16px;
  background: var(--kd-teal); color: #fff; text-decoration: none; cursor: pointer;
}
.button.secondary { background: #fff; color: var(--kd-ink); border: 1px solid var(--kd-line); }
.summary-cards { display: grid; grid-template-columns: repeat(3, minmax(140px, 1fr)); gap: 14px; margin: 20px 0; }
.summary-card { padding: 16px; border: 1px solid var(--kd-line); border-radius: 8px; background: #fff; }
.summary-card span { display: block; color: var(--kd-muted); }
.summary-card strong { display: block; font-size: 28px; margin-top: 6px; }
.filters { display: flex; align-items: end; gap: 12px; margin: 20px 0; }
.filters label { display: grid; gap: 6px; color: var(--kd-muted); font-size: 14px; }
.filters input, .filters select { min-height: 40px; padding: 8px 10px; border: 1px solid var(--kd-line); border-radius: 4px; background: #fff; }
.filters input { min-width: 280px; }
.table-wrap { overflow-x: auto; }
.status { display: inline-block; padding: 3px 9px; border-radius: 999px; font-size: 13px; }
.status.active { color: #0f766e; background: #ccfbf1; }
.status.inactive { color: #64748b; background: #e2e8f0; }
.empty-state { padding: 32px; text-align: center; background: #fff; border: 1px solid var(--kd-line); border-radius: 8px; color: var(--kd-muted); }
.pagination { display: flex; gap: 18px; align-items: center; justify-content: center; margin-top: 20px; }
.pagination a { color: var(--kd-teal); }
.policy { max-width: 820px; line-height: 1.65; }
.subscription-page { max-width: 620px; }
.notice { padding: 12px; border-radius: 4px; }
.notice.success { color: #0f766e; background: #ccfbf1; }
.notice.error { color: #b91c1c; background: #fee2e2; }
.primary-button { border: 0; background: var(--kd-teal); color: #fff; padding: 10px 16px; border-radius: 4px; cursor: pointer; }

@media (max-width: 700px) {
  .admin-header, .page-heading, .filters { align-items: stretch; flex-direction: column; }
  .admin-header nav { flex-wrap: wrap; }
  .admin-main { padding: 18px; }
  .summary-cards { grid-template-columns: 1fr; }
  .filters input { min-width: 0; width: 100%; }
}