:root {
  --ink: #1b2a4a;
  --paper: #f7f5f2;
  --accent: #c8532b;
  --muted: #5a6472;
  --line: #d8d2c8;
  --ok: #2e6b3f;
  --card: #ffffff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.55;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 1rem 1.25rem;
  background: var(--ink);
  color: #f7f5f2;
}

h1 { font-size: 1.4rem; margin: 0; }
h2 { font-size: 1.25rem; margin-top: 0; }

#main { max-width: 960px; margin: 0 auto; padding: 1.5rem 1.25rem 4rem; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}
.card.narrow { max-width: 480px; }
.card.warn { border-color: var(--accent); }

button, .btn {
  font: inherit;
  border: 1px solid var(--ink);
  border-radius: 6px;
  padding: 0.5rem 1rem;
  cursor: pointer;
  background: var(--card);
  color: var(--ink);
  text-decoration: none;
  display: inline-block;
}
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.ghost { background: transparent; color: inherit; border-color: currentColor; }
.btn:focus-visible, a:focus-visible, input:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

label { display: block; margin: 0.75rem 0 0.25rem; font-size: 0.95rem; }
input {
  font: inherit;
  width: 100%;
  max-width: 100%;
  padding: 0.5rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--paper);
  color: var(--ink);
}

.error { color: #a02a10; }
.fineprint, .empty, .totals { color: var(--muted); }

.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; background: var(--card); }
th, td { text-align: left; padding: 0.6rem 0.75rem; border-bottom: 1px solid var(--line); }
th { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); }
tbody tr { cursor: pointer; }
tbody tr:hover { background: #efece6; }

.status-paid { color: var(--ok); }
.status-unpaid { color: var(--accent); }

.detail-grid { display: grid; grid-template-columns: auto 1fr; gap: 0.4rem 1.5rem; }
dt { color: var(--muted); }
dd { margin: 0; }

.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 1rem; }
.admin-list { list-style: none; padding: 0; }
.admin-list li {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 6px; padding: 0.75rem 1rem; margin-bottom: 0.5rem;
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
}

@media (max-width: 640px) {
  .grid3 { grid-template-columns: 1fr; }
  .detail-grid { grid-template-columns: 1fr; }
  dt { margin-top: 0.5rem; }
}