/* ==========================================================================
   CMP-086: Lower CTA Section (下層CTAセクション)
   Mobile-first responsive design
   ========================================================================== */

:root {
  --lower-cta-btn-shadow: 0 2px 4px rgba(0, 0, 0, 0.12);
  --lower-cta-btn-shadow-hover: 0 4px 8px rgba(0, 0, 0, 0.1);
  --lower-cta-item-max-width: 354px;
  --lower-cta-card-img-width: 83px;
  --lower-cta-card-img-height: 78px;
  --lower-cta-divider-height: 1px;
  --lower-cta-btn-min-width: 180px;
  --lower-cta-btn-height: 48px;
  --lower-cta-heading-width-md: calc(var(--lower-cta-item-max-width) * 2 + 50px);
  --lower-cta-single-grid-max-width: 695px;
  --lower-cta-grid-col-width-md: var(--lower-cta-item-max-width);
  --lower-cta-grid-width-mid: min(100%, calc(320px * 2 + var(--space-lg)));
  /* 3 columns on tablet+ (matches 2-col gap token between tracks) */
  --lower-cta-heading-width-md-3cols: min(
    100%,
    calc(
      var(--lower-cta-item-max-width) * 3 + (var(--space-3xl) + 2px) * 2 +
        var(--space-lg)
    )
  );
  --lower-cta-btn-min-width-mid: 168px;
  --lower-cta-btn-height-mid: 44px;
}

.c-lower-cta-section {
  padding-top: calc(var(--space-5xl) + var(--space-sm));
  padding-bottom: calc(var(--space-5xl) + var(--space-sm));
}

.c-lower-cta {
  display: flex;
  flex-direction: column;
  margin-inline: auto;
  padding: var(--space-lg) var(--layout-padding-inline-mobile);
  background-color: var(--color-primary-medium);
  border-radius: var(--radius-sm);
}

.c-lower-cta__content {
  border-radius: var(--radius-sm);
}

.c-lower-cta__heading {
  position: relative;
  display: block;
  width: 100%;
  z-index: 1;
  margin: 0 0 calc(var(--space-xl) + var(--space-xs));
  padding-bottom: var(--space-xs);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-heading);
  color: var(--color-white);
  text-align: center;
}

.c-lower-cta__heading::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: calc(-1 * var(--space-xs));
  z-index: -1;
  width: 100%;
  height: var(--space-md);
  background-color: var(--color-accent);
}

.c-lower-cta-section:has(.c-lower-cta__grid--single) .c-lower-cta__heading {
  width: 100%;
  max-width: var(--lower-cta-single-grid-max-width);
  margin-inline: auto;
  box-sizing: border-box;
}

.c-lower-cta__grid.c-lower-cta__grid--single {
  width: 100%;
  max-width: var(--lower-cta-single-grid-max-width);
  margin-inline: auto;
  grid-template-columns: 1fr;
  justify-items: stretch;
  box-sizing: border-box;
}

/* Full-bleed grid within .l-container — same pattern as .c-business-content__grid */
.c-lower-cta__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: none;
  box-sizing: border-box;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  align-items: stretch;
}

.c-lower-cta__item {
  display: flex;
  width: 100%;
  margin: 0 auto;
  min-width: 0;
  max-width: var(--lower-cta-item-max-width);
}

.c-lower-cta__grid--single > .c-lower-cta__item {
  max-width: none;
}

.c-lower-cta__card {
  width: 100%;
  height: 100%;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  padding: calc(var(--space-md) + 2px);
  background-color: var(--color-white);
  border: 5px solid var(--color-primary-light-2);
  border-radius: var(--radius-lg);
}

.c-lower-cta__card-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  width: auto;
  min-width: 0;
  margin-inline: calc(-1 * var(--space-lg));
  padding-inline: var(--space-md);
}

.c-lower-cta__card-header:not(:has(.c-lower-cta__card-img)) {
  margin-inline: 0;
  padding-inline: 0;
  justify-content: center;
}

.c-lower-cta__card-img {
  flex-shrink: 0;
  width: var(--lower-cta-card-img-width);
  height: var(--lower-cta-card-img-height);
  object-fit: contain;
}

.c-lower-cta__card-title {
  flex: 1;
  min-width: 0;
  margin: 0;
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-nav);
  color: var(--color-primary);
  text-align: center;
}

.c-lower-cta__card-divider {
  width: 100%;
  height: var(--lower-cta-divider-height);
  margin: 0;
  border: 0;
  background-color: var(--color-primary);
}

.c-lower-cta__card-desc {
  width: fit-content;
  margin: 0 auto;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
  white-space: pre-line;
}

.c-lower-cta__card-action {
  display: flex;
  justify-content: center;
}

.c-lower-cta__btn {
  position: relative;
  isolation: isolate;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  min-width: var(--lower-cta-btn-min-width);
  height: var(--lower-cta-btn-height);
  padding: var(--space-md) var(--space-lg);
  border: 0;
  border-radius: var(--radius-pill);
  background: linear-gradient(
    90deg,
    var(--color-accent) 0%,
    var(--color-accent-dark) 100%
  );
  box-shadow: var(--lower-cta-btn-shadow);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-white);
  text-decoration: none;
  cursor: pointer;
  transition:
    color var(--duration-normal) var(--easing-emphasized),
    box-shadow var(--duration-slow) var(--easing-default);
}

.c-lower-cta__btn::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  background-color: var(--color-white);
  opacity: 0;
  transition: opacity var(--duration-slow) var(--easing-default);
}

.c-lower-cta__btn:hover::before {
  opacity: 1;
}

.c-lower-cta__btn:hover {
  color: var(--color-primary);
  box-shadow:
    var(--lower-cta-btn-shadow-hover),
    0 0 0 3px var(--color-primary-light-4);
}

.c-lower-cta__btn:focus-visible {
  outline: none;
  box-shadow: var(--lower-cta-btn-shadow), var(--shadow-focus-primary);
}

/* ==========================================================================
   Tablet — min-width: 768px
   ========================================================================== */
@media (min-width: 768px) {
  .c-lower-cta-section {
    padding-top: calc(var(--space-6xl) * 2);
    padding-bottom: var(--space-6xl);
  }

  .c-lower-cta__card-header {
    margin-inline: 0;
    padding-inline: 0;
  }

  .c-lower-cta__item {
    width: 100%;
    max-width: var(--lower-cta-item-max-width);
  }

  .c-lower-cta {
    padding: calc(var(--space-xl) - 1px) var(--layout-padding-inline);
    border-radius: var(--radius-sm);
  }

  .c-lower-cta__content {
    margin: 0 calc(-1 * var(--layout-padding-inline));
    width: calc(100% + 2 * var(--layout-padding-inline));
  }

  .c-lower-cta__heading {
    width: var(--lower-cta-heading-width-md);
    margin-inline: auto;
    font-size: var(--font-size-3xl);
    line-height: var(--line-height-heading);
  }

  .c-lower-cta__grid--single > .c-lower-cta__item {
    max-width: none;
  }

  .c-lower-cta-section:has(.c-lower-cta__grid--cols-3) .c-lower-cta__heading {
    width: var(--lower-cta-heading-width-md-3cols);
  }

  .c-lower-cta__grid {
    width: fit-content;
    margin-inline: auto;
    grid-template-columns: repeat(2, var(--lower-cta-grid-col-width-md));
    gap: calc(var(--space-3xl) + 2px);
    justify-content: center;
    justify-items: center;
  }

  .c-lower-cta__grid.c-lower-cta__grid--cols-3 {
    grid-template-columns: repeat(3, var(--lower-cta-grid-col-width-md));
    justify-items: stretch;
  }

  .c-lower-cta__card {
    gap: var(--space-md);
    padding: calc(var(--space-md) + 2px);
    border-width: 5px;
    border-radius: var(--radius-lg);
  }

  .c-lower-cta__card-title {
    font-size: var(--font-size-xl);
    line-height: var(--line-height-nav);
  }
}

/* ==========================================================================
   Mid Tablet — 768px to 910px
   Keep layout stable without wrapping/breaking
   ========================================================================== */
@media (min-width: 768px) and (max-width: 910px) {
  .c-lower-cta {
    padding: calc(var(--space-xl) - 1px) 0;
  }

  .c-lower-cta__heading {
    width: var(--lower-cta-grid-width-mid);
    margin-inline: auto;
    font-size: var(--font-size-2xl);
    line-height: var(--line-height-heading);
  }

  .c-lower-cta-section:has(.c-lower-cta__grid--cols-3) .c-lower-cta__heading {
    width: min(100%, calc(276px * 3 + var(--space-lg) * 2));
  }

  .c-lower-cta__grid {
    width: var(--lower-cta-grid-width-mid);
    margin-inline: auto;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-lg);
  }

  .c-lower-cta__grid.c-lower-cta__grid--cols-3 {
    width: min(100%, calc(276px * 3 + var(--space-lg) * 2));
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-md);
  }

  .c-lower-cta__item,
  .c-lower-cta__card {
    max-width: none;
  }

  .c-lower-cta__card {
    padding: var(--space-md);
    border-width: 4px;
  }

  .c-lower-cta__card-title {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-nav);
  }

  .c-lower-cta__btn {
    min-width: var(--lower-cta-btn-min-width-mid);
    height: var(--lower-cta-btn-height-mid);
    padding: var(--space-sm) var(--space-md);
    font-size: var(--font-size-xs);
  }
}