/* Einstein calculators main page */

.page-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 1rem 4rem;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 1.25rem;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.breadcrumb a {
  color: var(--primary-hover);
  font-weight: 600;
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

/* Heading */

.page-heading {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.heading-icon {
  width: 72px;
  height: 72px;
  flex: 0 0 72px;
  display: grid;
  place-items: center;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 14px;
}

.heading-icon img {
  width: 50px;
  height: 50px;
  object-fit: contain;
}

.page-heading h1 {
  color: #0a174e;
  font-family: "Basic", serif;
  font-size: clamp(1.65rem, 4vw, 2.25rem);
  line-height: 1.2;
}

.page-heading p {
  max-width: 760px;
  margin-top: 0.4rem;
  color: var(--text-muted);
  font-family: "Nunito Sans", serif;
}

/* Calculator cards */

.calculator-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.calculator-card {
  min-height: 230px;
  display: flex;
  flex-direction: column;
  padding: 1.4rem;
  color: inherit;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-decoration: none;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    border-color 0.2s ease;
}

.calculator-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
  box-shadow: var(--shadow-hover);
}

.calculator-card:focus-visible {
  outline: 3px solid rgba(16, 185, 129, 0.25);
  outline-offset: 3px;
}

.calculator-card .card-icon {
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  margin-bottom: 1rem;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 12px;
}

.calculator-card .card-icon img {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.card-content {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-content h2 {
  color: #0a174e;
  font-family: "Basic", serif;
  font-size: 1.2rem;
  line-height: 1.3;
}

.card-content p {
  margin-top: 0.55rem;
  color: var(--text-muted);
  font-family: "Nunito Sans", serif;
  font-size: 0.9rem;
}

.card-link {
  margin-top: auto;
  padding-top: 1rem;
  color: var(--primary-hover);
  font-size: 0.85rem;
  font-weight: 700;
}

/* Information */

.information-section {
  margin-top: 1.5rem;
  padding: 1.5rem;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.information-section h2 {
  margin-bottom: 0.65rem;
  color: #0a174e;
  font-family: "Basic", serif;
  font-size: 1.3rem;
}

.information-section p {
  max-width: 900px;
  color: var(--text-muted);
  font-family: "Nunito Sans", serif;
  font-size: 0.92rem;
}

.information-section p + p {
  margin-top: 0.65rem;
}

/* Responsive */

@media (max-width: 950px) {
  .calculator-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .page-container {
    padding: 1rem 0.75rem 3rem;
  }

  .page-heading {
    align-items: flex-start;
    padding: 1.1rem;
  }

  .heading-icon {
    width: 52px;
    height: 52px;
    flex-basis: 52px;
  }

  .heading-icon img {
    width: 36px;
    height: 36px;
  }

  .calculator-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
  }

  .calculator-card {
    min-height: 245px;
    padding: 1rem;
  }

  .calculator-card .card-icon {
    width: 48px;
    height: 48px;
  }

  .calculator-card .card-icon img {
    width: 34px;
    height: 34px;
  }

  .card-content h2 {
    font-size: 1rem;
  }

  .card-content p {
    font-size: 0.8rem;
  }

  .card-link {
    font-size: 0.76rem;
  }

  .information-section {
    padding: 1rem;
  }
}

@media (max-width: 400px) {
  .calculator-grid {
    grid-template-columns: 1fr;
  }

  .calculator-card {
    min-height: 210px;
  }
}