/* ==============================================
   COMPONENT: Domain Grid
   Description: 2×2 grid of domain cards — icon, theme name, locked tagline, link
   ============================================== */

/* --- Block --- */

.domain-grid {
  padding-block: var(--space-16);
  background: var(--color-bg-section);
}

/* --- Grid --- */

.domain-grid__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

/* --- Card --- */

.domain-grid__card {
  display: flex;
  flex-direction: column;
  padding: var(--space-8);
  background: var(--color-clinical-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  border-top: 4px solid transparent;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.domain-grid__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

/* Domain accent colours on top border */
.domain-grid__card--innovations {
  border-top-color: var(--color-innovation-blue);
}

.domain-grid__card--devices {
  border-top-color: var(--color-vitality-orange);
}

.domain-grid__card--applications {
  border-top-color: var(--color-cyber-teal);
}

.domain-grid__card--technology {
  border-top-color: var(--color-synthesis-green);
}

/* --- Elements --- */

.domain-grid__icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-5);
  color: var(--color-innovation-blue);
}

.domain-grid__card--devices .domain-grid__icon {
  color: var(--color-vitality-orange);
}

.domain-grid__card--applications .domain-grid__icon {
  color: var(--color-cyber-teal);
}

.domain-grid__card--technology .domain-grid__icon {
  color: var(--color-synthesis-green);
}

.domain-grid__icon svg {
  width: 100%;
  height: 100%;
}

.domain-grid__theme {
  font-size: var(--text-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.domain-grid__tagline {
  flex: 1;
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-6);
}

.domain-grid__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-innovation-blue);
  margin-top: auto;
  transition: gap var(--transition-fast), color var(--transition-fast);
}

.domain-grid__card--devices .domain-grid__link {
  color: var(--color-vitality-orange);
}

.domain-grid__card--applications .domain-grid__link {
  color: var(--color-cyber-teal);
}

.domain-grid__card--technology .domain-grid__link {
  color: var(--color-synthesis-green);
}

.domain-grid__link:hover {
  gap: var(--space-3);
}

.domain-grid__link::after {
  content: '→';
}

/* --- Responsive --- */

@media (min-width: 768px) {
  .domain-grid {
    padding-block: var(--space-16);
  }

  .domain-grid__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .domain-grid {
    padding-block: var(--space-20);
  }
}