:root {
  color-scheme: light dark;
  --bg: #fafafa;
  --fg: #1a1a1a;
  --border: #ccc;
  --muted: #555;
  --accent: #0b5;
  --danger: #b00;
  --card: #fff;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121212;
    --fg: #eee;
    --border: #444;
    --muted: #aaa;
    --accent: #3c8;
    --danger: #f66;
    --card: #1e1e1e;
  }
}
* {
  box-sizing: border-box;
}
body {
  font-family: system-ui, sans-serif;
  max-width: 48rem;
  margin: 0 auto;
  padding: 1.5rem 1rem;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.45;
}
body.db-page {
  max-width: min(90rem, 100% - 2rem);
}
h1 {
  font-size: 1.35rem;
  margin-top: 0;
}
h2 {
  font-size: 1.1rem;
  margin: 1.25rem 0 0.5rem;
}
a {
  color: var(--accent);
}
label {
  display: block;
  margin-top: 0.65rem;
}
input,
select,
textarea,
button {
  font: inherit;
}
input,
select,
textarea {
  width: 100%;
  max-width: 28rem;
  padding: 0.35rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--card);
  color: var(--fg);
}
button {
  margin-top: 0.75rem;
  margin-right: 0.5rem;
  padding: 0.4rem 0.75rem;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--fg);
  cursor: pointer;
}
button.primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
button.danger {
  color: var(--danger);
  border-color: var(--danger);
}
.row {
  margin-top: 1.25rem;
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}
.topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.topbar button {
  margin-top: 0;
}
.muted {
  color: var(--muted);
  font-size: 0.9rem;
}
pre,
.log-preview {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 0.75rem;
  overflow: auto;
  font-size: 0.82rem;
  border-radius: 4px;
  max-height: 16rem;
}
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  margin-top: 0.5rem;
}
table.data th,
table.data td {
  border: 1px solid var(--border);
  padding: 0.35rem 0.45rem;
  text-align: left;
  vertical-align: top;
}
table.data th {
  background: color-mix(in srgb, var(--border) 35%, transparent);
}
table.data .nowrap {
  white-space: nowrap;
}
.table-scroll {
  overflow-x: auto;
  margin-top: 0.5rem;
  max-width: 100%;
}
.topbar a.nav {
  margin-top: 0;
  padding: 0.4rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  text-decoration: none;
  color: var(--fg);
  background: var(--card);
  font-size: 0.9rem;
}
.topbar a.nav:hover {
  border-color: var(--accent);
}
#gradeList button {
  margin: 0 0.15rem 0 0;
  font-size: 0.75rem;
}
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 50;
}
.modal {
  background: var(--card);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  max-width: 32rem;
  width: 100%;
}
.modal pre {
  word-break: break-all;
  max-height: 8rem;
}