/* =================================================================
   AIR SOURCE HEAT PUMP BUYER'S GUIDE
   ================================================================= */
.heat-pump-guide p,
.heat-pump-guide li,
.heat-pump-guide dd,
.heat-pump-guide figcaption {
  font-size: 1rem;
  line-height: 1.65;
}

.heat-pump-guide__hero {
  overflow: hidden;
  margin: 0 0 var(--spacing-2xl);
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.heat-pump-guide__hero-image {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.heat-pump-guide__inline-figure figcaption {
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--color-gray-600);
  background: var(--color-gray-50);
  font-size: 0.82rem;
}

.heat-pump-guide__intro {
  border-top: 4px solid var(--color-secondary);
}

.heat-pump-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.heat-pump-facts__item {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: var(--spacing-xs);
  padding: var(--spacing-lg);
  background: linear-gradient(145deg, var(--bg-primary-light), var(--color-surface));
  border: 1px solid var(--color-info-light);
  border-radius: var(--radius-lg);
}

.heat-pump-facts__value {
  color: var(--color-primary-dark);
  font-size: 1.65rem;
  font-weight: 800;
  line-height: 1.15;
}

.heat-pump-facts__label {
  min-height: 3.2rem;
  color: var(--color-gray-700);
  font-weight: 600;
}

.heat-pump-facts__item a {
  align-self: flex-start;
  margin-top: auto;
}

.heat-pump-guide__corrections {
  padding: var(--spacing-xl);
  color: var(--color-secondary);
  background: var(--color-success-bg);
  border: 1px solid var(--color-secondary-light);
  border-left: 4px solid var(--color-secondary);
  border-radius: var(--radius-lg);
}

.heat-pump-guide__corrections h2 {
  margin: 0 0 var(--spacing-md);
  color: var(--color-secondary);
  font-size: 1.35rem;
}

.heat-pump-guide__corrections ul,
.heat-pump-cost-grid__item ul,
.heat-pump-grant-grid ul,
.heat-pump-guide__planning-list {
  margin: 0;
  padding-left: 1.25rem;
}

.heat-pump-guide__corrections li + li,
.heat-pump-cost-grid__item li + li,
.heat-pump-grant-grid li + li,
.heat-pump-guide__planning-list li + li {
  margin-top: var(--spacing-sm);
}

.heat-pump-guide__section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(18rem, 0.6fr);
  align-items: end;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.heat-pump-guide__section-heading .section__title {
  margin-bottom: 0;
}

.heat-pump-guide__section-heading > p {
  margin: 0;
  color: var(--color-gray-600);
}

.heat-pump-guide__eyebrow,
.heat-pump-model-card__fit {
  margin: 0 0 var(--spacing-xs);
  color: var(--color-secondary-dark);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.heat-pump-model-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-xl);
}

.heat-pump-model-card {
  display: flex;
  min-width: 0;
  scroll-margin-top: 5rem;
  flex-direction: column;
  gap: var(--spacing-md);
  padding: var(--spacing-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-gray-200);
  border-top: 4px solid var(--color-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
}

.heat-pump-model-card__heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.heat-pump-model-card__title {
  margin: 0;
  color: var(--color-gray-900);
  font-size: 1.45rem;
  line-height: 1.25;
}

.heat-pump-model-card__checked {
  flex: 0 0 auto;
  padding: var(--spacing-xs) var(--spacing-sm);
  color: var(--color-secondary-dark);
  background: var(--color-success-bg);
  border: 1px solid var(--color-secondary-light);
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 700;
  white-space: nowrap;
}

.heat-pump-model-card > p {
  margin: 0;
  color: var(--color-gray-600);
}

.heat-pump-model-card__specs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-sm);
  margin: 0;
}

.heat-pump-model-card__specs > div {
  min-width: 0;
  padding: var(--spacing-md);
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
}

.heat-pump-model-card__specs dt {
  margin-bottom: var(--spacing-xs);
  color: var(--color-gray-600);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.heat-pump-model-card__specs dd {
  margin: 0;
  color: var(--color-gray-900);
  font-size: 0.9rem;
  font-weight: 650;
  overflow-wrap: anywhere;
}

.heat-pump-model-card__caveat {
  padding: var(--spacing-md);
  color: var(--color-warning-dark);
  background: var(--bg-warning-light);
  border-left: 3px solid var(--color-warning);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  line-height: 1.55;
}

.heat-pump-model-card__link {
  align-self: flex-start;
  margin-top: auto;
  color: var(--color-primary-dark);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.heat-pump-guide__comparison {
  margin-top: var(--spacing-2xl);
  background: var(--color-surface);
  border: 1px solid var(--color-gray-200);
  box-shadow: var(--shadow-md);
}

.heat-pump-guide__comparison:focus-visible {
  outline: 3px solid var(--color-primary-light);
  outline-offset: 3px;
}

.heat-pump-guide__comparison-table {
  min-width: 920px;
  table-layout: fixed;
}

.heat-pump-guide__comparison caption {
  padding: var(--spacing-lg);
  color: var(--color-gray-900);
  background: linear-gradient(135deg, var(--bg-primary-light), var(--bg-primary-lighter));
  border-bottom: 1px solid var(--color-info-light);
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.4;
  text-align: left;
}

.heat-pump-guide__comparison-table thead th {
  vertical-align: middle;
  line-height: 1.35;
  white-space: normal;
}

.heat-pump-guide__comparison-table th:nth-child(1) { width: 22%; }
.heat-pump-guide__comparison-table th:nth-child(2) { width: 17%; }
.heat-pump-guide__comparison-table th:nth-child(3) { width: 25%; }
.heat-pump-guide__comparison-table th:nth-child(4) { width: 36%; }

.heat-pump-guide__comparison-table tbody th {
  padding: 1.25rem var(--spacing-md);
  color: var(--color-gray-900);
  background: var(--bg-primary-light);
  border-right: 1px solid var(--color-info-light);
  font-size: 0.92rem;
  letter-spacing: normal;
  line-height: 1.45;
  overflow-wrap: anywhere;
  text-align: left;
  text-transform: none;
  vertical-align: top;
  white-space: normal;
}

.heat-pump-guide__comparison-table tbody tr:nth-child(even) th,
.heat-pump-guide__comparison-table tbody tr:hover th,
.heat-pump-guide__comparison-table tbody tr:focus-within th {
  background: var(--bg-primary-lighter);
}

.heat-pump-guide__comparison-table tbody td {
  vertical-align: top;
  line-height: 1.55;
}

.heat-pump-guide__comparison-table tbody td:nth-child(2) {
  color: var(--color-gray-900);
  font-weight: 650;
}

.heat-pump-guide__refresh-note {
  margin: var(--spacing-md) 0 0;
  color: var(--color-gray-600);
  font-size: 0.9rem;
}

.heat-pump-cost-grid,
.heat-pump-grant-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.heat-pump-cost-grid__item,
.heat-pump-grant-grid > div {
  padding: var(--spacing-xl);
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
}

.heat-pump-cost-grid__item--warning {
  background: var(--bg-warning-light);
  border-color: var(--color-warning);
}

.heat-pump-cost-grid__item h3,
.heat-pump-grant-grid h3,
.heat-pump-guide__note h3,
.heat-pump-guide__quote-box h3 {
  margin-top: 0;
  color: var(--color-gray-900);
}

.heat-pump-guide__formula {
  display: grid;
  grid-template-columns: 1.1fr auto 1.4fr auto 1fr auto 1.2fr;
  align-items: center;
  gap: var(--spacing-sm);
  margin: var(--spacing-lg) 0;
  padding: var(--spacing-lg);
  color: var(--color-gray-800);
  background: var(--bg-primary-light);
  border: 1px solid var(--color-info-light);
  border-radius: var(--radius-lg);
  text-align: center;
}

.heat-pump-guide__formula > span:nth-child(even) {
  color: var(--color-primary-dark);
  font-size: 1.3rem;
  font-weight: 800;
}

.heat-pump-guide__media-layout,
.heat-pump-installation-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(22rem, 0.95fr);
  align-items: start;
  gap: var(--spacing-2xl);
}

.heat-pump-guide__media-copy .section__title {
  margin-bottom: var(--spacing-lg);
}

.heat-pump-checklist {
  display: grid;
  gap: var(--spacing-sm);
  margin: 0;
  padding-left: 1.3rem;
}

.heat-pump-guide__inline-figure {
  overflow: hidden;
  margin: 0;
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.heat-pump-guide__inline-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.heat-pump-guide__note,
.heat-pump-guide__quote-box {
  margin-top: var(--spacing-xl);
  padding: var(--spacing-xl);
  background: var(--bg-primary-light);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-lg);
}

.heat-pump-guide__note p,
.heat-pump-guide__quote-box p {
  margin-bottom: 0;
}

.heat-pump-installation-steps {
  display: grid;
  gap: var(--spacing-md);
  margin: 0;
  padding: 0;
  list-style: none;
}

.heat-pump-installation-steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: var(--spacing-md);
}

.heat-pump-installation-steps li > span {
  display: grid;
  width: 2.3rem;
  height: 2.3rem;
  place-items: center;
  color: white;
  background: var(--color-primary-dark);
  border-radius: 50%;
  font-weight: 800;
}

.heat-pump-installation-steps p {
  margin: var(--spacing-xs) 0 0;
  color: var(--color-gray-600);
}

.heat-pump-guide__inline-figure--installation img {
  min-height: 31rem;
}

.heat-pump-grant-grid {
  margin-top: var(--spacing-xl);
  margin-bottom: 0;
}

.heat-pump-grant-grid p:last-child {
  margin-bottom: 0;
}

.heat-pump-planning-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.heat-pump-planning-grid__item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  padding: var(--spacing-xl);
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
}

.heat-pump-planning-grid__item strong {
  color: var(--color-primary-dark);
  font-size: 1.8rem;
  line-height: 1.1;
}

.heat-pump-planning-grid__item span {
  color: var(--color-gray-700);
  line-height: 1.55;
}

.heat-pump-guide__planning-list {
  margin-bottom: var(--spacing-xl);
}

.heat-pump-related-guides {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--spacing-md);
}

.heat-pump-related-guides__card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg);
  color: var(--color-gray-800);
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.heat-pump-related-guides__card:hover,
.heat-pump-related-guides__card:focus-visible {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.heat-pump-related-guides__card > span:first-child {
  color: var(--color-secondary-dark);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.heat-pump-related-guides__card strong {
  color: var(--color-gray-900);
  font-size: 1.05rem;
}

.heat-pump-related-guides__card > span:last-child {
  margin-top: auto;
  color: var(--color-primary-dark);
  font-weight: 700;
}

.heat-pump-guide__cta {
  margin-bottom: var(--spacing-2xl);
}

@media (max-width: 900px) {
  .heat-pump-model-grid,
  .heat-pump-guide__media-layout,
  .heat-pump-installation-grid {
    grid-template-columns: 1fr;
  }

  .heat-pump-guide__section-heading {
    grid-template-columns: 1fr;
    align-items: start;
    gap: var(--spacing-md);
  }

  .heat-pump-guide__inline-figure--installation img {
    min-height: 0;
  }

  .heat-pump-guide__formula {
    grid-template-columns: 1fr;
    text-align: left;
  }

  .heat-pump-guide__formula > span:nth-child(even) {
    transform: rotate(90deg);
    justify-self: center;
  }
}

@media (max-width: 700px) {
  .heat-pump-facts,
  .heat-pump-cost-grid,
  .heat-pump-grant-grid,
  .heat-pump-planning-grid,
  .heat-pump-related-guides {
    grid-template-columns: 1fr;
  }

  .heat-pump-facts__label {
    min-height: 0;
  }

  .heat-pump-model-card {
    padding: var(--spacing-lg);
  }

  .heat-pump-model-card__heading {
    flex-direction: column;
  }

  .heat-pump-model-card__specs {
    grid-template-columns: 1fr;
  }

  .heat-pump-guide__comparison-table {
    min-width: 840px;
    font-size: 0.85rem;
  }
}

@media (max-width: 480px) {
  .heat-pump-guide p,
  .heat-pump-guide li,
  .heat-pump-guide dd {
    font-size: 0.94rem;
  }

  .heat-pump-guide__hero {
    margin-right: calc(var(--spacing-sm) * -1);
    margin-left: calc(var(--spacing-sm) * -1);
    border-radius: var(--radius-md);
  }

  .heat-pump-guide__hero-image {
    aspect-ratio: 4 / 3;
  }

  .heat-pump-guide__corrections,
  .heat-pump-cost-grid__item,
  .heat-pump-grant-grid > div,
  .heat-pump-guide__note,
  .heat-pump-guide__quote-box,
  .heat-pump-planning-grid__item {
    padding: var(--spacing-md);
  }

  .heat-pump-facts__value {
    font-size: 1.4rem;
  }

  .heat-pump-model-card__title {
    font-size: 1.25rem;
  }
}

@media print {
  .heat-pump-model-card,
  .heat-pump-guide__inline-figure,
  .heat-pump-guide__hero {
    break-inside: avoid;
    box-shadow: none;
  }
}