:root {
  --bg: #fafaf8;
  --fg: #1d1d1b;
  --muted: #6b6b66;
  --line: #e2e2dc;
  --accent: #2f5d8a;
  --credit: #2e7d32;
  --error-bg: #fdecea;
  --error-fg: #9b1c1c;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #18181a;
    --fg: #e8e8e3;
    --muted: #9a9a94;
    --line: #333336;
    --accent: #8ab4e0;
    --credit: #81c784;
    --error-bg: #3b1d1d;
    --error-fg: #f4b4b4;
  }
}

* { box-sizing: border-box; }

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

header {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  align-items: baseline;
  padding: 1rem;
  border-bottom: 1px solid var(--line);
}

header nav { display: flex; gap: 1.25rem; }
a { color: var(--accent); }
.brand { font-weight: 700; font-size: 1.25rem; text-decoration: none; color: var(--fg); }

main { max-width: 64rem; margin: 0 auto; padding: 1rem; }

h1 { font-size: 1.5rem; }

form { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; }
button {
  font: inherit;
  padding: 0.4rem 1rem;
  border: 1px solid var(--accent);
  border-radius: 4px;
  background: var(--accent);
  color: var(--bg);
  cursor: pointer;
}

input:not([type="file"]):not([type="hidden"]) {
  font: inherit;
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--bg);
  color: var(--fg);
}

form.login { flex-direction: column; align-items: stretch; max-width: 22rem; }
form.login label { display: flex; flex-direction: column; gap: 0.25rem; }
form.logout { margin-left: auto; }
button.link { padding: 0; border: 0; background: none; color: var(--accent); text-decoration: underline; }

.error {
  padding: 0.75rem 1rem;
  border-radius: 4px;
  background: var(--error-bg);
  color: var(--error-fg);
}

.summary { display: grid; grid-template-columns: max-content auto; gap: 0.25rem 1.5rem; }
.summary dt { color: var(--muted); }
.summary dd { margin: 0; font-weight: 600; }

table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { padding: 0.4rem 0.6rem; border-bottom: 1px solid var(--line); text-align: left; }
th { color: var(--muted); font-weight: 500; font-size: 0.875rem; }
td { white-space: nowrap; }
.amount { text-align: right; }
.credit { color: var(--credit); }
.wording { white-space: pre; font-family: ui-monospace, monospace; font-size: 0.875rem; }

@media (max-width: 40rem) {
  table, tbody, tr, td { display: block; }
  thead { display: none; }
  tr { padding: 0.5rem 0; border-bottom: 1px solid var(--line); }
  td { border: 0; padding: 0.1rem 0; text-align: left; }
  td[data-label]::before { content: attr(data-label) " : "; color: var(--muted); font-size: 0.875rem; }
  td.amount { text-align: left; font-weight: 600; }
  .wording { white-space: pre-wrap; }
}