:root {
  color-scheme: light dark;
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #1a1d23;
  --muted: #6b7280;
  --border: #e5e7eb;
  --primary: #2563eb;
  --primary-text: #ffffff;
  --danger-bg: #fef2f2;
  --danger: #b91c1c;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --card: #171a21;
    --text: #e7e9ee;
    --muted: #9aa3b2;
    --border: #2a2f3a;
    --primary: #3b82f6;
    --danger-bg: #3a1214;
    --danger: #fca5a5;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}
a { color: var(--primary); }
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: var(--card);
}
.topbar nav { display: flex; gap: 1rem; align-items: center; }
.brand { font-weight: 700; text-decoration: none; color: inherit; }
.container { max-width: 56rem; margin: 2rem auto; padding: 0 1rem; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}
.card.narrow { max-width: 26rem; margin: 3rem auto; }
h1 { font-size: 1.5rem; margin: 0 0 1rem; }
h2 { font-size: 1.1rem; margin: 0 0 0.75rem; }
label { display: block; margin-bottom: 0.9rem; font-weight: 500; }
input {
  display: block;
  width: 100%;
  margin-top: 0.3rem;
  padding: 0.6rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: transparent;
  color: inherit;
  font: inherit;
}
.button {
  display: inline-block;
  padding: 0.65rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--card);
  color: inherit;
  font: inherit;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
}
.button.primary { background: var(--primary); border-color: var(--primary); color: var(--primary-text); }
.button.block { display: block; width: 100%; }
button.link { background: none; border: 0; padding: 0; color: var(--primary); cursor: pointer; font: inherit; }
.divider { text-align: center; color: var(--muted); margin: 1rem 0; }
.alert { background: var(--danger-bg); color: var(--danger); padding: 0.7rem 0.9rem; border-radius: 8px; }
.muted { color: var(--muted); }
.footer { text-align: center; padding: 2rem 1rem; font-size: 0.875rem; }
dl { display: grid; grid-template-columns: max-content 1fr; gap: 0.4rem 1.25rem; margin: 0; }
dt { color: var(--muted); }
dd { margin: 0; }
.notice { background: color-mix(in srgb, var(--primary) 12%, transparent); padding: 0.7rem 0.9rem; border-radius: 8px; }
.spaced { margin-top: 1rem; }
code { font-size: 0.9em; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 0.55rem 0.5rem; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-weight: 600; color: var(--muted); font-size: 0.85rem; }
.badge { display: inline-block; padding: 0.1rem 0.55rem; border-radius: 999px; font-size: 0.8rem; font-weight: 600; border: 1px solid var(--border); }
.badge.ok { color: #047857; border-color: #6ee7b7; }
.badge.warn { color: #b45309; border-color: #fcd34d; }
.badge.bad { color: var(--danger); border-color: #fca5a5; }
.badge.muted { color: var(--muted); }
ul.plain { list-style: none; padding: 0; margin: 0; }
ul.plain li { padding: 0.4rem 0; }
form.inline { display: inline; }
select {
  padding: 0.6rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: transparent;
  color: inherit;
  font: inherit;
}
h3 { font-size: 1rem; margin: 1.25rem 0 0.5rem; }
label.check { display: flex; gap: 0.5rem; align-items: center; font-weight: 400; }
label.check input { display: inline; width: auto; margin: 0; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr)); gap: 0 1rem; }
form.row { display: flex; gap: 0.5rem; align-items: flex-end; flex-wrap: wrap; }
form.row label { flex: 1 1 12rem; margin: 0; }
form.row input, form.row select { margin: 0; }
td form.row input, td form.row select { width: auto; min-width: 9rem; padding: 0.35rem 0.5rem; }
.subnav { display: flex; gap: 0.25rem; margin-bottom: 1.25rem; border-bottom: 1px solid var(--border); }
.subnav a { padding: 0.5rem 0.9rem; text-decoration: none; color: var(--muted); border-bottom: 2px solid transparent; }
.subnav a.active { color: var(--text); border-bottom-color: var(--primary); }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 1rem 1.25rem; display: flex; flex-direction: column; }
.stat .num { font-size: 1.8rem; font-weight: 700; }
form.search { display: flex; gap: 0.5rem; margin-bottom: 1.25rem; }
form.search input { margin: 0; flex: 1; }
pre { background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 0.9rem; overflow: auto; font-size: 0.8rem; }
.topbar nav a { color: inherit; }

/* ---- form layout (admin settings) ---------------------------------------- */
/* Selects stack under their label like inputs do, so every control shares a left edge. */
select { display: block; width: 100%; margin-top: 0.3rem; }
.page-head { margin-bottom: 1.5rem; }
.page-head h1 { margin-bottom: 0.25rem; }
.page-head p, .card-head p { margin: 0; }
.card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  padding-bottom: 1rem;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--border);
}
.card-head h2 { margin-bottom: 0.15rem; }
.card-head p { font-size: 0.9rem; }
.fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem 1.25rem; }
.fields > .wide { grid-column: 1 / -1; }
.field, .fields label.check, .checks label.check { margin: 0; }
.label-row { display: flex; align-items: center; gap: 0.5rem; }
.hint { display: block; margin-top: 0.3rem; font-weight: 400; font-size: 0.85rem; color: var(--muted); }
.checks { display: grid; gap: 0.6rem; }
/* A label that wraps keeps its box on the first line. */
.checks label.check { align-items: flex-start; }
.checks label.check input { margin-top: 0.3rem; }
label.check { cursor: pointer; }
label.check input { flex: none; accent-color: var(--primary); }
label.switch {
  flex: none;
  margin: 0;
  padding: 0.35rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-weight: 500;
}
label.switch:has(input:checked) {
  border-color: var(--primary);
  background: color-mix(in srgb, var(--primary) 10%, transparent);
}
input:focus-visible, select:focus-visible, .button:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 1px;
}
.panel {
  min-width: 0;
  margin: 1.25rem 0 0;
  padding: 1rem 1.25rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: 10px;
}
.panel legend { padding: 0 0.4rem; font-weight: 600; font-size: 0.9rem; color: var(--muted); }
/* Only the selected email provider's panel. Without :has() both simply stay visible. */
.settings:has(select[name="emailProvider"] option[value="smtp"]:checked) [data-provider="sendgrid"],
.settings:has(select[name="emailProvider"] option[value="sendgrid"]:checked) [data-provider="smtp"] {
  display: none;
}
.card-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}
.card-foot label.check { margin: 0; }
.push { margin-left: auto; }
.actionbar {
  position: sticky;
  bottom: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  padding: 0.9rem 1.25rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  font-size: 0.9rem;
}
@media (max-width: 40rem) {
  .fields { grid-template-columns: minmax(0, 1fr); }
  .card-head { flex-wrap: wrap; }
  .push { margin-left: 0; }
}