:root {
  --bg: #f8fafc; --surface: #ffffff; --fg: #0f172a; --muted: #64748b; --border: #e2e8f0; --soft: #f1f5f9;
  --accent: #2dd4bf; --accent-strong: #0f766e; --accent-fg: #07201c; --accent-soft: #f0fdfa;
  --danger: #b91c1c; --danger-soft: #fef2f2; --warn: #92400e; --warn-soft: #fffbeb;
  --shadow: 0 1px 2px rgb(15 23 42 / 0.05), 0 4px 16px rgb(15 23 42 / 0.06);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1120; --surface: #111827; --fg: #e2e8f0; --muted: #94a3b8; --border: #1f2937; --soft: #0f172a;
    --accent: #2dd4bf; --accent-strong: #5eead4; --accent-fg: #07201c; --accent-soft: #0f1d24;
    --danger: #fca5a5; --danger-soft: #2a1215; --warn: #fcd34d; --warn-soft: #271d0b;
    --shadow: 0 1px 2px rgb(0 0 0 / 0.3);
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 15px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; }
a { color: var(--accent-strong); }
h1, h2 { line-height: 1.2; letter-spacing: -0.01em; }
h1 { font-size: 1.6rem; margin: 0; }
h2 { font-size: 1.05rem; margin: 0 0 0.75rem; }
code { font: 0.9em ui-monospace, SFMono-Regular, Menlo, monospace; background: var(--soft); border: 1px solid var(--border); border-radius: 4px; padding: 0.05em 0.35em; }
small, .muted { color: var(--muted); }

/* Header */
.bar { background: var(--surface); border-bottom: 1px solid var(--border); }
.bar-inner { max-width: 72rem; margin: 0 auto; padding: 0 16px; min-height: 56px; display: flex; flex-wrap: wrap; gap: 8px 24px; align-items: center; justify-content: space-between; }
.wordmark { display: inline-flex; align-items: center; gap: 0.55rem; font-weight: 700; color: var(--fg); text-decoration: none; }
.wordmark svg { width: 26px; height: 26px; flex: none; }
.wordmark span { color: var(--muted); font-weight: 500; }
.nav { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.nav a { color: var(--muted); text-decoration: none; padding: 6px 10px; border-radius: 6px; }
.nav a:hover { color: var(--fg); background: var(--soft); }
.nav a[aria-current="page"] { color: var(--fg); background: var(--soft); font-weight: 600; }
.nav form { margin: 0 0 0 8px; }
.nav button { background: none; border: 1px solid var(--border); color: var(--muted); padding: 5px 10px; font-weight: 500; }
.nav button:hover { color: var(--fg); background: var(--soft); }

/* Page */
main { max-width: 72rem; margin: 0 auto; padding: 28px 16px 64px; }
.page-head { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.page-head p { margin: 4px 0 0; color: var(--muted); }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow); padding: 20px; margin-bottom: 16px; }
.card > h2:first-child { margin-top: 0; }
.card.flush { padding: 0; overflow: hidden; }
.card.flush > h2 { padding: 16px 20px 0; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); margin-bottom: 16px; }
.grid .card { margin: 0; }
.stat { font-size: 1.35rem; font-weight: 650; margin-top: 2px; }
.label { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); }
.empty { padding: 28px 20px; text-align: center; color: var(--muted); }

/* Tables */
.table-wrap { overflow-x: auto; }
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: 0.78rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); font-weight: 600; background: var(--soft); }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover td { background: var(--soft); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
td a { font-weight: 600; text-decoration: none; }
td a:hover { text-decoration: underline; }

/* Badges */
.badge { display: inline-block; font-size: 0.78rem; font-weight: 600; border-radius: 999px; padding: 0.1rem 0.6rem; border: 1px solid transparent; }
.badge.active { background: var(--accent-soft); color: var(--accent-strong); border-color: var(--accent); }
.badge.grace { background: var(--warn-soft); color: var(--warn); border-color: currentColor; }
.badge.expired, .badge.revoked { background: var(--danger-soft); color: var(--danger); border-color: currentColor; }

/* Forms */
form { margin: 0; }
.stack { display: flex; flex-direction: column; gap: 14px; }
.row { display: flex; flex-wrap: wrap; gap: 10px; align-items: end; }
.fields { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
label { display: flex; flex-direction: column; gap: 5px; font-size: 0.9rem; font-weight: 550; }
input { font: inherit; font-weight: 400; padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); color: var(--fg); min-width: 0; }
input:focus { outline: 2px solid var(--accent); outline-offset: 0; border-color: var(--accent); }
button, .button { font: inherit; font-weight: 600; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 8px 14px; border-radius: 8px; text-decoration: none; background: var(--accent); color: var(--accent-fg); border: 1px solid var(--accent); }
button:hover, .button:hover { filter: brightness(0.95); }
button.secondary, .button.secondary { background: var(--surface); color: var(--fg); border-color: var(--border); }
button.danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.hint { font-size: 0.85rem; color: var(--muted); margin: 6px 0 0; }

/* Notices */
.notice { border-radius: 10px; padding: 12px 14px; margin-bottom: 16px; border: 1px solid; }
.saved { background: var(--accent-soft); border-color: var(--accent); color: var(--fg); }
.error { background: var(--danger-soft); border-color: var(--danger); color: var(--danger); font-weight: 600; }
.warning { background: var(--warn-soft); border-color: var(--warn); color: var(--fg); }
.danger-zone { border-color: var(--danger); }
.danger-zone h2 { color: var(--danger); }
.danger-zone .fields { gap: 24px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
td.wrap { white-space: normal; min-width: 16rem; color: var(--muted); }
pre { margin: 0; overflow-x: auto; padding: 14px; background: var(--soft); border: 1px solid var(--border); border-radius: 8px; font: 0.85rem/1.5 ui-monospace, SFMono-Regular, Menlo, monospace; }

/* Sign-in */
.auth { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px 16px; }
.auth .card { width: 100%; max-width: 380px; padding: 28px; }
.auth .wordmark { font-size: 1.1rem; margin-bottom: 20px; }
.auth h1 { font-size: 1.3rem; margin-bottom: 4px; }
.auth .intro { color: var(--muted); margin: 0 0 20px; }
.auth button { width: 100%; margin-top: 6px; }

@media (max-width: 640px) {
  .page-head { align-items: flex-start; }
  .grid.stats { grid-template-columns: 1fr 1fr; gap: 10px; }
  .grid.stats .card { padding: 12px 14px; }
  .stat { font-size: 1.05rem; }
  .card { padding: 16px; }
}