:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --text: #1a1d21;
  --muted: #5f6672;
  --border: #d9dde3;
  --primary: #1f5eff;
  --primary-text: #ffffff;
  --ok: #1a7f4b;
  --bad: #c0392b;
  --warn: #b7791f;
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --surface: #1d2025;
    --text: #e8eaed;
    --muted: #9aa3ad;
    --border: #2f343b;
    --primary: #4f80ff;
    --ok: #3ccf7a;
    --bad: #ff6b5b;
    --warn: #e6b04a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
}

h1 { margin: 0 0 4px; font-size: 26px; }
h2 { margin: 0 0 14px; font-size: 17px; }

.muted { color: var(--muted); margin: 0; }
.small { font-size: 13px; }
.ok-text { color: var(--ok); margin: 6px 0 0; }
.bad-text { color: var(--bad); margin: 6px 0 0; }

.badge {
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  white-space: nowrap;
}
.badge.test { border-color: var(--warn); color: var(--warn); }
.badge.prod { border-color: var(--bad); color: var(--bad); }

.nav {
  display: flex;
  gap: 18px;
  margin-bottom: 18px;
  font-size: 14px;
}
.nav a { color: var(--primary); text-decoration: none; font-weight: 500; }
.nav a:hover { text-decoration: underline; }
.nav a[aria-current="page"] { color: var(--text); }

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 860px) {
  .grid { grid-template-columns: minmax(0, 2fr) minmax(280px, 1fr); align-items: start; }
  .summary { position: sticky; top: 16px; }
}

.stack > * + * { margin-top: 16px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}

label {
  display: block;
  margin-bottom: 12px;
  font-size: 13px;
  color: var(--muted);
}

input, select, textarea {
  display: block;
  width: 100%;
  margin-top: 4px;
  padding: 9px 10px;
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
}

input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--primary);
  outline-offset: -1px;
}

.row { display: grid; gap: 12px; grid-template-columns: 1fr 1fr; }
.row.three { grid-template-columns: 1fr 1fr 1fr; }
.row.four { grid-template-columns: 1.4fr 1.2fr 1fr 1fr; }

@media (max-width: 720px) {
  .row.four { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 520px) {
  .row, .row.three, .row.four { grid-template-columns: 1fr; }
}

dl {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 6px 12px;
  margin: 0 0 14px;
}
dt { color: var(--muted); }
dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; }
.total { font-weight: 600; font-size: 17px; color: var(--text); }

button.primary, a.button {
  display: block;
  width: 100%;
  padding: 12px;
  font: inherit;
  font-weight: 600;
  color: var(--primary-text);
  background: var(--primary);
  border: 0;
  border-radius: 6px;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
}
button.primary:disabled { opacity: 0.6; cursor: wait; }

.error {
  margin-bottom: 12px;
  padding: 10px 12px;
  border-radius: 6px;
  background: rgba(192, 57, 43, 0.1);
  color: var(--bad);
  font-size: 13px;
}

/* result page */

.banner {
  padding: 18px;
  border-radius: var(--radius);
  border: 1px solid;
}
.banner h1 { color: inherit; }
.banner p { margin: 6px 0 0; }
.banner .headline { font-size: 16px; }
.banner.ok { border-color: var(--ok); color: var(--ok); background: rgba(26, 127, 75, 0.08); }
.banner.bad { border-color: var(--bad); color: var(--bad); background: rgba(192, 57, 43, 0.08); }
.banner.warn { border-color: var(--warn); color: var(--warn); background: rgba(183, 121, 31, 0.08); }
.banner.neutral { border-color: var(--border); color: var(--text); background: var(--surface); }

/* previous charges list */

.counts { color: var(--muted); margin: 0; }

.pill {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  border: 1px solid;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}
.pill.ok { border-color: var(--ok); color: var(--ok); }
.pill.bad { border-color: var(--bad); color: var(--bad); }
.pill.warn { border-color: var(--warn); color: var(--warn); }
.pill.neutral { border-color: var(--border); color: var(--muted); }

.table-wrap { overflow-x: auto; margin: -6px; padding: 6px; }

table.list { width: 100%; border-collapse: collapse; font-size: 14px; white-space: nowrap; }
table.list th, table.list td {
  text-align: left;
  padding: 8px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
table.list th {
  color: var(--muted);
  font-weight: 500;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
table.list tbody tr:hover { background: var(--bg); }
table.list td.desc { white-space: normal; min-width: 180px; max-width: 320px; }
table.list a { color: var(--primary); text-decoration: none; }
table.list a:hover { text-decoration: underline; }

.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }
.num { text-align: right; font-variant-numeric: tabular-nums; }

/* receipt */

.receipt h3 {
  margin: 16px 0 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.receipt h3:first-child { margin-top: 0; }
.receipt-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
@media (max-width: 720px) { .receipt-grid { grid-template-columns: 1fr; } }
table.kv tr.total-row th, table.kv tr.total-row td {
  font-weight: 700;
  font-size: 16px;
  color: var(--text);
  border-top: 2px solid var(--border);
  border-bottom: 0;
}

.actions { display: flex; gap: 12px; }
.actions > * { flex: 1; }
button.secondary {
  padding: 12px;
  font: inherit;
  font-weight: 600;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
}

@media print {
  body { background: #fff; color: #000; }
  .nav, .actions, .badge, details { display: none !important; }
  .container { padding: 0; max-width: none; }
  .card, .banner { border-color: #999; break-inside: avoid; background: #fff; }
  .banner { color: #000; }
}

table.kv { width: 100%; border-collapse: collapse; font-size: 14px; }
table.kv th, table.kv td {
  text-align: left;
  padding: 6px 8px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  word-break: break-word;
}
table.kv th { width: 34%; color: var(--muted); font-weight: 500; }

details + details { margin-top: 12px; }
details summary { cursor: pointer; font-weight: 500; }
details table { margin-top: 10px; }

pre {
  white-space: pre-wrap;
  word-break: break-all;
  font-size: 12px;
  background: var(--bg);
  padding: 10px;
  border-radius: 6px;
}