:root {
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #666;
  --line: #ddd;
  --accent: #0a5c36;
  --accent-fg: #fff;
  --danger: #a11;
  --ok: #0a5c36;
  --warn: #8a5a00;
  --panel: #f7f7f7;
  --radius: 4px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--fg);
  background: var(--bg);
}

a { color: var(--accent); }

header.site {
  border-bottom: 1px solid var(--line);
  padding: 0.75rem 1rem;
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}
header.site .brand { font-weight: 700; font-size: 1.1rem; text-decoration: none; color: var(--fg); }
header.site nav { margin-left: auto; display: flex; gap: 1rem; align-items: center; flex-wrap: wrap; }
header.site nav a { text-decoration: none; }
header.site .who { color: var(--muted); font-size: 0.9rem; }

main { max-width: 1000px; margin: 0 auto; padding: 1.5rem 1rem 4rem; }
h1 { font-size: 1.5rem; margin: 0 0 1rem; }
h2 { font-size: 1.15rem; margin: 1.5rem 0 0.75rem; }

.filters { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 1.25rem; }
input, select, textarea, button {
  font: inherit;
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--fg);
}
textarea { min-height: 6rem; width: 100%; }
button { cursor: pointer; background: var(--panel); }
button.primary { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }
button.danger { color: var(--danger); }
button:disabled { opacity: 0.5; cursor: not-allowed; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.25rem;
}

.card { border: 1px solid var(--line); border-radius: var(--radius); padding: 0.75rem; }
.card img, .cover { width: 100%; aspect-ratio: 2/3; object-fit: cover; background: var(--panel); border-radius: 2px; display: block; }
.card h3 { margin: 0.6rem 0 0.2rem; font-size: 1rem; }
.card .author { color: var(--muted); font-size: 0.9rem; margin: 0 0 0.4rem; }
.card .price { font-weight: 700; }
.card .row { display: flex; gap: 0.5rem; align-items: center; margin-top: 0.5rem; }

.detail { display: grid; grid-template-columns: 260px 1fr; gap: 2rem; align-items: start; }
@media (max-width: 640px) { .detail { grid-template-columns: 1fr; } }

table { border-collapse: collapse; width: 100%; font-size: 0.92rem; }
th, td { border-bottom: 1px solid var(--line); padding: 0.5rem 0.6rem; text-align: left; vertical-align: top; }
th { background: var(--panel); font-weight: 600; white-space: nowrap; }
td.num, th.num { text-align: right; }
.table-wrap { overflow-x: auto; }

.tag { display: inline-block; padding: 0.1rem 0.45rem; border-radius: 999px; font-size: 0.78rem; border: 1px solid var(--line); }
.tag.completed { color: var(--ok); border-color: var(--ok); }
.tag.pending { color: var(--warn); border-color: var(--warn); }
.tag.failed, .tag.cancelled { color: var(--danger); border-color: var(--danger); }

.msg { padding: 0.6rem 0.8rem; border-radius: var(--radius); margin: 0.75rem 0; border: 1px solid; }
.msg.error { color: var(--danger); border-color: var(--danger); background: #fdf4f4; }
.msg.ok { color: var(--ok); border-color: var(--ok); background: #f2f8f4; }
.msg.info { color: var(--muted); border-color: var(--line); background: var(--panel); }

form.stack { display: grid; gap: 0.75rem; max-width: 420px; }
form.stack label { display: grid; gap: 0.25rem; font-size: 0.9rem; }
form.wide { max-width: 640px; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat { border: 1px solid var(--line); border-radius: var(--radius); padding: 0.8rem; }
.stat .label { color: var(--muted); font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.03em; }
.stat .value { font-size: 1.45rem; font-weight: 700; margin-top: 0.2rem; }

.muted { color: var(--muted); }
.small { font-size: 0.86rem; }
.right { text-align: right; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.85em; word-break: break-all; }

canvas#salesChart { width: 100%; max-width: 100%; height: 240px; border: 1px solid var(--line); border-radius: var(--radius); }

.admin-nav { display: flex; gap: 1rem; padding: 0.6rem 0; border-bottom: 1px solid var(--line); margin-bottom: 1.25rem; flex-wrap: wrap; }

.cart-line { display: flex; gap: 1rem; align-items: center; border-bottom: 1px solid var(--line); padding: 0.6rem 0; }
.cart-line .cover { width: 48px; aspect-ratio: 2/3; }
.cart-line .grow { flex: 1; }

.totals { margin-top: 1rem; font-size: 1.1rem; font-weight: 700; text-align: right; }