:root {
  /* Same Material-3-style green tonal palette as the generated proposal
     (templates/proposal.html) -- seed color sampled from the brand logo. */
  --accent: #405e3b;
  --accent-light: #e1ebe0;
  --border: #d8d8d8;
  --text: #1a1a1a;
  --muted: #6b6b6b;
  --danger: #b3261e;
}
* { box-sizing: border-box; }
body {
  font-family: system-ui, -apple-system, 'Segoe UI', sans-serif;
  color: var(--text);
  max-width: 880px;
  margin: 0 auto;
  padding: 24px 16px 80px;
  background: #fafafa;
}
header h1 { color: var(--accent); margin-bottom: 4px; }
.muted { color: var(--muted); font-size: 0.92em; }
fieldset {
  border: 1px solid var(--border);
  border-radius: 8px;
  margin: 20px 0;
  padding: 16px 20px 20px;
  background: #fff;
}
legend { font-weight: 700; color: var(--accent); padding: 0 6px; }
label { display: block; margin: 10px 0 4px; font-size: 0.92em; font-weight: 600; }
input, textarea, select {
  width: 100%;
  font: inherit;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-top: 2px;
}
textarea { resize: vertical; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.checkbox-group { margin: 12px 0; }
.checkbox-group h4 { margin: 0 0 6px; color: var(--accent); font-size: 0.95em; }
.checkbox-group .items { columns: 2; column-gap: 16px; }
.checkbox-group label {
  font-weight: 400;
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 3px 0;
  break-inside: avoid;
}
.checkbox-group input[type="checkbox"] { width: auto; margin: 0; }
.add-item-row { display: flex; gap: 6px; margin-top: 6px; }
.add-item-row input { margin: 0; }
.add-item-row button { flex: none; padding: 6px 12px; background: var(--accent-light); color: var(--accent); border: 1px solid var(--accent); border-radius: 6px; }
.freeform-group { margin-top: 14px; }
table { width: 100%; border-collapse: collapse; margin-top: 10px; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--border); }
td input { margin: 0; }
.when-input-wrap { display: flex; gap: 6px; align-items: center; }
.when-input-wrap input[type="text"] { flex: 1; min-width: 0; }
.when-input-wrap input[type="date"] { flex: none; width: 130px; color: var(--muted); font-size: 0.85em; }
tfoot .total-row td { border-bottom: none; border-top: 2px solid var(--accent); padding-top: 10px; }
input[name="total"][readonly] { background: var(--accent-light); font-weight: 700; cursor: default; }
.input-error { border-color: var(--danger) !important; background: #fdecea; }
button { cursor: pointer; }
#costs-table button, #payment-plans-table button, #timeline-table button {
  background: none; border: none; color: var(--danger); font-weight: 700;
}
fieldset > button { margin-top: 10px; background: var(--accent-light); color: var(--accent); border: 1px solid var(--accent); border-radius: 6px; padding: 6px 12px; }
.submit-row { display: flex; align-items: center; gap: 12px; margin-top: 24px; }
#submit-btn {
  background: var(--accent); color: #fff; border: none;
  padding: 12px 24px; border-radius: 6px; font-size: 1em; font-weight: 700;
}
#submit-btn:disabled { opacity: 0.6; cursor: not-allowed; }
#result {
  margin-top: 24px; padding: 16px 20px; background: #eaf7ec;
  border: 1px solid #8fc79a; border-radius: 8px;
}
#result a { color: var(--accent); font-weight: 700; }