:root {
  --bg: #0b1220;
  --card: #111a2e;
  --border: #23314f;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #2563eb;
  --danger: #f87171;
  --ok: #34d399;
  --warn: #fbbf24;
  color-scheme: dark;
}
* { box-sizing: border-box; }
/* Layout rules below set display; keep the [hidden] attribute authoritative. */
[hidden] { display: none !important; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: "Segoe UI", Tahoma, Arial, sans-serif; line-height: 1.6; }
header { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 1rem 1.5rem; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
h1 { margin: 0; font-size: 1.4rem; }
h2 { margin: 0 0 .5rem; font-size: 1.15rem; }
h3 { margin: 1.25rem 0 .5rem; font-size: 1rem; color: var(--muted); }
h4 { margin: 1rem 0 .4rem; font-size: .95rem; }
main, #fatal { max-width: 1150px; margin: 1.5rem auto; padding: 0 1rem; display: grid; gap: 1.25rem; }
.stack { display: grid; gap: 1.25rem; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 1.25rem; min-width: 0; }
.card-head { display: flex; justify-content: space-between; align-items: center; gap: .75rem; flex-wrap: wrap; }
.muted { color: var(--muted); margin: .25rem 0 .75rem; }
.error { color: var(--danger); }
.table-wrap { overflow-x: auto; margin-bottom: 1rem; }
table { width: 100%; border-collapse: collapse; font-size: .95rem; }
th, td { text-align: start; padding: .5rem .6rem; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { color: var(--muted); font-weight: 600; white-space: nowrap; }
code { font-size: .8rem; color: var(--muted); word-break: break-all; }
form.inline { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; margin-top: .5rem; }
form.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: .5rem; align-items: center; margin-top: .5rem; }
input, select, textarea { background: #0d1526; border: 1px solid var(--border); color: var(--text); border-radius: 8px; padding: .5rem .65rem; font: inherit; min-width: 0; }
textarea { grid-column: 1 / -1; resize: vertical; }
button { background: var(--accent); color: #fff; border: 0; border-radius: 8px; padding: .5rem 1rem; font: inherit; cursor: pointer; }
button:disabled { opacity: .6; cursor: wait; }
button.secondary { background: transparent; border: 1px solid var(--border); color: var(--text); }
button.danger { background: transparent; border: 1px solid var(--danger); color: var(--danger); }
button.small { padding: .25rem .7rem; font-size: .85rem; }
button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
nav { display: flex; gap: .5rem; }
.tabs { border-bottom: 1px solid var(--border); gap: .25rem; overflow-x: auto; }
.tabs button { background: transparent; color: var(--muted); border-radius: 8px 8px 0 0; border-bottom: 2px solid transparent; white-space: nowrap; }
.tabs button[aria-selected="true"] { color: var(--text); border-bottom-color: var(--accent); }
.chips { display: flex; gap: .5rem; flex-wrap: wrap; }
.chip { background: transparent; border: 1px solid var(--border); color: var(--text); border-radius: 999px; padding: .3rem .9rem; }
.chip[aria-selected="true"] { background: var(--accent); border-color: var(--accent); }
.actions { display: flex; gap: .35rem; flex-wrap: wrap; }
details { margin-top: .5rem; }
summary { cursor: pointer; color: var(--accent); width: fit-content; }
fieldset.checks { border: 1px solid var(--border); border-radius: 8px; display: flex; flex-wrap: wrap; gap: .25rem 1rem; grid-column: 1 / -1; }
fieldset.checks label { display: flex; align-items: center; gap: .35rem; }
.badge { display: inline-block; padding: .05rem .55rem; border-radius: 999px; font-size: .8rem; border: 1px solid var(--border); color: var(--muted); white-space: nowrap; }
.badge-active, .badge-provisioned, .badge-delivered { color: var(--ok); border-color: var(--ok); }
.badge-grace, .badge-pending, .badge-pending_payment, .badge-failed, .badge-processing { color: var(--warn); border-color: var(--warn); }
.badge-suspended, .badge-cancelled, .badge-terminated, .badge-dead_letter, .badge-inactive { color: var(--danger); border-color: var(--danger); }
@media (max-width: 600px) { header { padding: 1rem; } main { padding: 0 .75rem; } }