/* ==========================================================================
   Invoice Generator — page-specific styles.
   Reuses shared tokens/classes from /assets/css/main.css (.field, .btn,
   .co-preview*, .change-order-form__logo-preview, .download-bar*,
   .seo-content*, .site-*). Only invoice-only structure lives here, in BEM,
   using existing custom properties — no new colors invented.
   ========================================================================== */

.invoice-form {
  background: var(--color-paper-alt);
  border-radius: var(--radius);
  padding: var(--space-5);
  margin-bottom: var(--space-6);
}
.invoice-form__section {
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--color-border);
}
.invoice-form__section:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}
.invoice-form__section-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  margin-bottom: var(--space-1);
}
.invoice-form__section-number {
  display: inline-block;
  color: var(--color-accent);
  font-weight: 700;
  margin-right: var(--space-2);
}
.invoice-form__section-hint {
  font-size: 0.85rem;
  color: var(--color-ink-muted);
  margin-bottom: var(--space-4);
}

/* ---- Line items ---- */
.invoice-form__line-item {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-4);
  margin-bottom: var(--space-3);
  position: relative;
}
.invoice-form__line-item-top {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}
@media (min-width: 640px) {
  .invoice-form__line-item-top {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
  }
}
.invoice-form__desc-field {
  flex: 1;
  margin-bottom: 0;
}

/* Row-type toggle: qty vs time */
.invoice-form__type-toggle {
  display: inline-flex;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
}
.invoice-form__type-option {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: var(--touch-min);
  min-width: var(--touch-min);
  padding: var(--space-2) var(--space-4);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-ink-soft);
  background: #fff;
  cursor: pointer;
}
.invoice-form__type-option + .invoice-form__type-option {
  border-left: 1px solid var(--color-border);
}
.invoice-form__type-option input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
}
.invoice-form__type-option:has(input:checked) {
  background: var(--color-accent);
  color: var(--color-accent-contrast);
}
.invoice-form__type-option:has(input:focus-visible) {
  outline: 3px solid var(--color-accent-dark);
  outline-offset: 2px;
}

.invoice-form__line-item-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}
@media (min-width: 640px) {
  .invoice-form__line-item-grid {
    grid-template-columns: 1fr 1fr;
  }
}
.invoice-form__line-item-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-3);
  gap: var(--space-3);
}
.invoice-form__line-item-amount {
  font-size: 0.9rem;
  color: var(--color-ink-soft);
}
.invoice-form__add-row {
  margin-top: var(--space-2);
}
.invoice-form__clear {
  text-align: right;
  margin-top: var(--space-3);
}

/* ---- Totals block (form side) ---- */
.invoice-form__totals-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}
@media (min-width: 640px) {
  .invoice-form__totals-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

/* ---- Preview additions (invoice-only, alongside shared .co-preview*) ---- */
.invoice-preview__party-details {
  font-size: 0.85rem;
  color: var(--color-ink-muted);
  margin-top: var(--space-1);
  line-height: 1.4;
}
.invoice-preview__notes {
  margin-top: var(--space-4);
  padding: var(--space-3);
  background: var(--color-paper-alt);
  border-radius: var(--radius-sm);
  white-space: pre-line;
}

/* ---- Tax summary block (informational only, visually subordinate) ---- */
.invoice-tax-summary {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px dashed var(--color-border);
  font-size: 0.8rem;
  color: var(--color-ink-muted);
}
.invoice-tax-summary__title {
  font-weight: 600;
  margin-bottom: var(--space-1);
  color: var(--color-ink-muted);
}
.invoice-tax-summary__row {
  display: flex;
  justify-content: space-between;
  padding: 2px 0;
}