:root {
  --ink: #1a1a1a;
  --muted: #6b6b6b;
  --line: #e0e0e0;
  --bg: #f7f6f4;
  --card: #ffffff;
  --accent: #1a1a1a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Avenir Next", "Avenir", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.5;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

main.wide { max-width: 1000px; }

.top-links { display: flex; gap: 18px; align-items: center; }
.whoami {
  font-size: 12px;
  color: var(--muted);
  background: #ececea;
  padding: 4px 10px;
  border-radius: 999px;
  white-space: nowrap;
}

/* --- login --- */
.login-wrap {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.login-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 36px 32px;
  width: 100%;
  max-width: 380px;
}
.login-card h1 {
  font-family: Georgia, "Playfair Display", serif;
  font-weight: 500;
  font-size: 38px;
  margin: 0;
}
.login-card .sub {
  margin: 2px 0 24px;
  color: var(--muted);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.login-card form { background: none; border: none; border-radius: 0; padding: 0; }
.login-card label { margin-bottom: 16px; }
.login-card .primary { margin-top: 8px; }

.masthead {
  margin-bottom: 28px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
}

.link {
  color: var(--ink);
  text-decoration: none;
  font-size: 13px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
  white-space: nowrap;
}
.link:hover { border-color: var(--ink); }

.masthead h1 {
  font-family: Georgia, "Playfair Display", serif;
  font-weight: 500;
  font-size: 44px;
  margin: 0;
  letter-spacing: 0.5px;
}

.masthead .sub {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

form {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 28px;
}

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

label {
  display: flex;
  flex-direction: column;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--muted);
  gap: 6px;
}

input {
  font: inherit;
  font-size: 15px;
  text-transform: none;
  letter-spacing: normal;
  color: var(--ink);
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

input:focus { outline: 2px solid var(--ink); outline-offset: -1px; }

.items { margin: 28px 0 8px; }

.items-head {
  display: grid;
  grid-template-columns: 1fr 150px 44px 30px;
  gap: 10px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--muted);
  padding: 0 2px 8px;
  border-bottom: 1px solid var(--ink);
}
.items-head span:nth-child(3) { text-align: center; }

.item-row {
  display: grid;
  grid-template-columns: 1fr 150px 44px 30px;
  gap: 10px;
  margin-top: 10px;
  align-items: center;
}

.save-cell {
  display: flex;
  justify-content: center;
  padding: 0;
}
.save-cell input { width: auto; }

.mini-link {
  align-self: flex-start;
  margin-top: 6px;
  font-size: 12px;
  color: var(--muted);
  text-decoration: none;
}
.mini-link:hover { color: var(--ink); }

.item-controls {
  display: flex;
  gap: 10px;
  margin-top: 16px;
  align-items: center;
}
.item-controls select { flex: 1; }

select, textarea {
  font: inherit;
  font-size: 15px;
  color: var(--ink);
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}
select:focus, textarea:focus { outline: 2px solid var(--ink); outline-offset: -1px; }
textarea { resize: vertical; line-height: 1.5; text-transform: none; letter-spacing: normal; }

.saved-note {
  margin: 0 0 16px;
  padding: 12px 14px;
  background: #eafaf0;
  border: 1px solid #b7e0c6;
  border-radius: 8px;
  color: #1b7f47;
  font-size: 14px;
}

.grid.three {
  display: grid;
  grid-template-columns: 100px 1fr 1fr;
  gap: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 28px;
}

.client-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.client-table th {
  text-align: left;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--muted);
  padding: 8px 10px;
  border-bottom: 1px solid var(--ink);
}
.client-table td {
  padding: 12px 10px;
  border-bottom: 1px solid var(--line);
}
.mono { font-variant-numeric: tabular-nums; font-weight: 600; }
.muted { color: var(--muted); }

.error {
  margin: 0 0 16px;
  padding: 12px 14px;
  background: #fdecea;
  border: 1px solid #f5c6c2;
  border-radius: 8px;
  color: #8a1c12;
  font-size: 14px;
}

.hint {
  margin: 12px 0 16px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.reissue-note {
  margin-bottom: 18px;
  padding: 12px 16px;
  background: #fdf4e3;
  border: 1px solid #f0d9a8;
  border-radius: 8px;
  color: #6b4e00;
  font-size: 14px;
}

/* --- history page --- */
.summary {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}
.sum-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 18px;
  min-width: 150px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.sum-card.total { background: var(--ink); border-color: var(--ink); }
.sum-card.total .sum-label, .sum-card.total .sum-figure { color: #fff; }
.sum-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--muted);
}
.sum-figure { font-size: 20px; font-variant-numeric: tabular-nums; }

.history th.r, .history td.r { text-align: right; }
.history td { vertical-align: middle; }

.badge {
  display: inline-block;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 3px 9px;
  border-radius: 999px;
  border: 1px solid;
}
.badge.paid { color: #1b7f47; border-color: #b7e0c6; background: #eafaf0; }
.badge.partial { color: #8a5a00; border-color: #f0d9a8; background: #fdf4e3; }
.badge.unpaid { color: #8a1c12; border-color: #f0c4bf; background: #fdecea; }

.actions { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.actions form { display: inline-flex; gap: 4px; margin: 0; padding: 0; border: none; background: none; }
.btn-sm {
  font: inherit;
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 6px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: #fff;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}
.btn-sm:hover { background: #000; }
.ghost-sm { background: none; color: var(--ink); border-color: var(--line); }
.ghost-sm:hover { background: none; border-color: var(--ink); }
.pay-input {
  width: 78px;
  padding: 6px 8px;
  font-size: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  text-align: right;
}

.amount { text-align: right; }

.remove {
  border: none;
  background: none;
  color: var(--muted);
  font-size: 22px;
  cursor: pointer;
  line-height: 1;
  border-radius: 6px;
}
.remove:hover { color: #c0392b; }

.ghost {
  margin-top: 14px;
  background: none;
  border: 1px dashed var(--line);
  color: var(--ink);
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
  font: inherit;
}
.ghost:hover { border-color: var(--ink); }

.foot { margin-top: 24px; }

.totals {
  margin: 24px 0;
  padding: 18px 2px 0;
  border-top: 1px solid var(--line);
}
.totals > div {
  display: flex;
  justify-content: space-between;
  padding: 5px 0;
  font-variant-numeric: tabular-nums;
}
.totals .strong { font-weight: 700; }
.totals .due {
  border-top: 1px solid var(--ink);
  margin-top: 6px;
  padding-top: 12px;
  font-size: 17px;
}
.totals em { font-style: normal; color: var(--muted); font-size: 13px; }

.primary {
  width: 100%;
  margin-top: 8px;
  padding: 14px;
  background: var(--ink);
  color: #fff;
  border: none;
  border-radius: 8px;
  font: inherit;
  font-size: 15px;
  letter-spacing: 0.5px;
  cursor: pointer;
}
.primary:hover { background: #000; }

.form-actions {
  display: flex;
  gap: 12px;
  margin-top: 8px;
}
.form-actions .primary { flex: 1; margin-top: 0; }

.secondary {
  padding: 14px 22px;
  background: none;
  color: var(--ink);
  border: 1px solid var(--ink);
  border-radius: 8px;
  font: inherit;
  font-size: 15px;
  letter-spacing: 0.5px;
  cursor: pointer;
}
.secondary:hover { background: #ececea; }

@media (max-width: 560px) {
  .grid.two { grid-template-columns: 1fr; }
  .items-head, .item-row { grid-template-columns: 1fr 110px 30px; }
}