:root {
  --bg: #f7f7f5;
  --surface: #ffffff;
  --text: #1c1c1a;
  --muted: #6b6b66;
  --border: #e2e2dd;
  --accent: #1f6feb;
  --ok: #1a7f37;
  --warn: #9a6700;
  --error: #cf222e;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121211;
    --surface: #1c1c1a;
    --text: #ececea;
    --muted: #a3a39e;
    --border: #33332f;
    --accent: #58a6ff;
    --ok: #3fb950;
    --warn: #d29922;
    --error: #f85149;
    color-scheme: dark;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font:
    16px/1.5 system-ui,
    -apple-system,
    'Segoe UI',
    sans-serif;
}

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

h1 {
  font-size: 1.6rem;
  margin: 0 0 16px;
}
h2 {
  font-size: 1.15rem;
  margin: 32px 0 12px;
}
p {
  margin: 0 0 12px;
}
a {
  color: var(--accent);
}
small,
.muted {
  color: var(--muted);
}
code,
.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.9em;
  word-break: break-all;
}

nav.admin {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  align-items: center;
  padding: 12px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
nav.admin a {
  text-decoration: none;
  color: var(--muted);
}
nav.admin a.active {
  color: var(--text);
  font-weight: 600;
}
nav.admin form {
  margin-left: auto;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 16px;
}

.grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}
.stat .value {
  font-size: 1.8rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.stat .label {
  color: var(--muted);
  font-size: 0.9rem;
}

.table-wrap {
  overflow-x: auto;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
th,
td {
  text-align: left;
  padding: 8px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
th {
  color: var(--muted);
  font-weight: 600;
}
td.num {
  font-variant-numeric: tabular-nums;
}

.badge {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 999px;
  font-size: 0.85rem;
  border: 1px solid var(--border);
}
.badge.valid,
.ok {
  color: var(--ok);
}
.badge.same_day,
.badge.out_of_window,
.warn {
  color: var(--warn);
}
.badge.not_public,
.error {
  color: var(--error);
}

.flash {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
  border: 1px solid var(--border);
  background: var(--surface);
}
.flash.error {
  border-color: var(--error);
}
.flash.ok {
  border-color: var(--ok);
}

form.inline {
  display: inline;
}
label {
  display: block;
  font-weight: 600;
  margin: 12px 0 4px;
}
input[type='text'],
input[type='password'],
input[type='number'],
input[type='date'],
textarea,
select {
  width: 100%;
  max-width: 480px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
}
textarea {
  max-width: 100%;
  min-height: 320px;
}
button {
  margin-top: 12px;
  padding: 8px 16px;
  border-radius: 8px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  font: inherit;
  cursor: pointer;
}
button.secondary {
  background: transparent;
  color: var(--accent);
}
button.danger {
  background: var(--error);
  border-color: var(--error);
}
nav.admin button {
  margin: 0;
  padding: 4px 12px;
}

.pager {
  display: flex;
  gap: 16px;
  margin-top: 12px;
}