:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --text: #1d2730;
  --muted: #5f6b76;
  --border: #d9dee3;
  --brand: #0f6e8c;
  --brand-ink: #ffffff;
  --ok-bg: #e5f5ec; --ok: #17643a;
  --bad-bg: #fdecec; --bad: #a12626;
  --warn-bg: #fff6df; --warn: #7a5600;
  --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12171c; --card: #1b232a; --text: #e6ebef; --muted: #9aa6b1; --border: #2e3a44;
    --brand: #3aa7c9; --brand-ink: #0b1a20;
    --ok-bg: #143423; --ok: #8fe0b0; --bad-bg: #3a1717; --bad: #f2a5a5; --warn-bg: #3a2f12; --warn: #f0d18a;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--brand); }
h1, h2 { margin: 0 0 4px; line-height: 1.2; }
.muted { color: var(--muted); }
.hidden { display: none !important; }

.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px; box-shadow: 0 1px 3px rgba(0, 0, 0, .06);
}
.narrow { max-width: 420px; margin: 8vh auto; padding: 0 16px; }

label { display: block; font-size: 14px; font-weight: 600; margin: 14px 0 6px; }
input, select, textarea {
  width: 100%; padding: 10px 12px; font: inherit; color: var(--text);
  background: var(--card); border: 1px solid var(--border); border-radius: 8px;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--brand); outline-offset: 1px; }
.prefix { display: flex; }
.prefix span {
  padding: 10px 12px; border: 1px solid var(--border); border-right: 0; border-radius: 8px 0 0 8px;
  background: var(--bg); color: var(--muted); font-weight: 600;
}
.prefix input { border-radius: 0 8px 8px 0; }

button, .btn {
  display: inline-block; padding: 10px 16px; font: inherit; font-weight: 600; cursor: pointer;
  border: 1px solid var(--brand); border-radius: 8px; background: var(--brand); color: var(--brand-ink);
  text-decoration: none;
}
button.secondary { background: transparent; color: var(--brand); }
button.danger { background: transparent; color: var(--bad); border-color: var(--bad); }
button:disabled { opacity: .6; cursor: wait; }
button.block { width: 100%; margin-top: 20px; }

.alert { margin-top: 16px; padding: 12px 14px; border-radius: 8px; font-weight: 500; }
.alert.ok { background: var(--ok-bg); color: var(--ok); }
.alert.bad { background: var(--bad-bg); color: var(--bad); }
.alert.warn { background: var(--warn-bg); color: var(--warn); }

/* staff panel */
.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px 16px; background: var(--card); border-bottom: 1px solid var(--border);
}
.topbar strong { font-size: 18px; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 16px; }
.toolbar { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; margin-bottom: 12px; }
.toolbar input { flex: 1 1 260px; }
.table-wrap { overflow-x: auto; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
td.wrap-cell { white-space: normal; min-width: 180px; }
th { background: var(--bg); font-weight: 600; position: sticky; top: 0; }
tr:last-child td { border-bottom: 0; }
td.actions { text-align: right; }
td.actions button { padding: 4px 10px; font-size: 13px; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 99px; font-size: 12px; font-weight: 600; }
.badge.active { background: var(--ok-bg); color: var(--ok); }
.badge.expired { background: var(--bad-bg); color: var(--bad); }
.badge.unknown { background: var(--warn-bg); color: var(--warn); }
.pager { display: flex; gap: 12px; align-items: center; justify-content: flex-end; margin-top: 12px; }

dialog {
  width: min(640px, calc(100vw - 32px)); padding: 0; border: 1px solid var(--border);
  border-radius: var(--radius); background: var(--card); color: var(--text);
}
dialog::backdrop { background: rgba(0, 0, 0, .45); }
dialog form { padding: 20px 24px 24px; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.grid .full { grid-column: 1 / -1; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }
.spacer { flex: 1; }
.hint { font-size: 13px; color: var(--warn); margin-top: 4px; }
@media (max-width: 560px) { .grid { grid-template-columns: 1fr; } }