/* ============================================================
   CASES — Project Case Studies
   2-column card grid
   ============================================================ */

/* --- Section Container --- */
.cases {
  position: relative;
  padding: 120px 0 100px;
  background: var(--c-bg);
  z-index: var(--z-content);
}

.cases__inner {
  max-width: var(--s-container);
  margin: 0 auto;
  padding: 0 var(--s-gutter);
}

/* --- Section Header --- */
.cases__header {
  margin-bottom: 56px;
}

.cases__title-en {
  font-family: var(--f-heading-en);
  font-weight: 700;
  font-size: clamp(3rem, 7vw, 5rem);
  letter-spacing: 0.02em;
  color: var(--c-orange-deep, #D4551A);
  line-height: 1;
  margin: 0 0 20px;
}

.cases__subtitle {
  font-family: var(--f-heading-ja);
  font-weight: 700;
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
  color: var(--c-text);
  margin: 0 0 12px;
}

.cases__lead {
  font-family: var(--f-body);
  font-weight: 400;
  font-size: 15px;
  color: var(--c-text-light);
  line-height: 1.8;
  max-width: 600px;
  margin: 0;
}

/* --- Filter Tabs --- */
.cases__filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 48px;
}

.cases__filter {
  font-family: var(--f-body);
  font-weight: 500;
  font-size: 13px;
  color: var(--c-text-light);
  background: transparent;
  border: 1px solid var(--c-border);
  border-radius: 100px;
  padding: 8px 22px;
  cursor: pointer;
  transition: all 0.3s var(--ease-smooth);
  white-space: nowrap;
}

.cases__filter:hover {
  color: var(--c-orange);
  border-color: var(--c-orange);
}

.cases__filter.is-active {
  color: #fff;
  background: var(--c-text);
  border-color: var(--c-text);
}

/* --- Cases Grid: 2 columns --- */
.cases__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

/* --- Card --- */
.cases__card {
  display: flex;
  background: #F3F4F6;
  border-radius: 6px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: transform 0.4s var(--ease-out),
              box-shadow 0.4s var(--ease-out),
              background 0.4s var(--ease-out);
  position: relative;
}

.cases__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.08);
  background: #ECEDF0;
}

/* --- Card Image --- */
.cases__card-img {
  position: relative;
  width: 240px;
  min-width: 240px;
  min-height: 180px;
  overflow: hidden;
  background: #E0E2E7;
  flex-shrink: 0;
}

.cases__card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out);
}

.cases__card:hover .cases__card-img img {
  transform: scale(1.05);
}

/* Default: img is hidden until successfully loaded */
.cases__card-img img {
  opacity: 0;
}

/* Fallback icon — shown by default, hidden only when image loads */
.cases__card-img-fallback {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  color: #B0B4BC;
  background: linear-gradient(135deg, #E8EAEF 0%, #D5D8DE 100%);
}

/* Image loaded successfully — show img, hide fallback */
.cases__card-img img.img-loaded {
  opacity: 1;
}

/* Direct img sibling (no picture wrapper) */
.cases__card-img img.img-loaded ~ .cases__card-img-fallback {
  display: none;
}

/* picture-wrapped img: use :has() to detect img-loaded inside picture */
.cases__card-img picture:has(img.img-loaded) ~ .cases__card-img-fallback {
  display: none;
}

/* Image error — ensure img is hidden (redundant safety) */
.cases__card-img img.img-error {
  display: none;
}

/* --- Card Body --- */
.cases__card-body {
  padding: 28px 28px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
  gap: 0;
  justify-content: center;
}

.cases__card-title {
  font-family: var(--f-body);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.6;
  color: var(--c-text);
  margin: 0 0 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.cases__card-desc {
  font-family: var(--f-body);
  font-weight: 400;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-text-light);
  margin: 0 0 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* --- Meta: Tags + Tech --- */
.cases__card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.cases__tag {
  font-family: var(--f-body);
  font-weight: 700;
  font-size: 11px;
  color: #fff;
  background: var(--c-text);
  padding: 4px 14px;
  border-radius: 2px;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.cases__tech {
  font-family: var(--f-label);
  font-weight: 500;
  font-size: 11px;
  color: var(--c-text-muted);
  letter-spacing: 0.02em;
}

/* --- VIEW MORE link --- */
.cases__card-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--f-label);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-text-light);
  text-transform: uppercase;
  transition: color 0.3s var(--ease-smooth);
  margin-top: auto;
  align-self: flex-end;
}

.cases__card-more svg {
  transition: transform 0.3s var(--ease-out);
}

.cases__card:hover .cases__card-more {
  color: var(--c-orange);
}

.cases__card:hover .cases__card-more svg {
  transform: translateX(4px);
}

/* --- View All CTA --- */
.cases__cta {
  text-align: center;
  margin-top: 96px;
}

.cases__cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--f-body);
  font-weight: 600;
  font-size: 15px;
  color: #fff;
  background: var(--g-btn-primary);
  padding: 16px 48px;
  border-radius: 100px;
  text-decoration: none;
  transition: transform 0.3s var(--ease-out),
              box-shadow 0.3s var(--ease-out),
              opacity 0.3s ease;
}

.cases__cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(232, 103, 42, 0.3);
  opacity: 0.9;
}

.cases__cta-btn svg {
  transition: transform 0.3s var(--ease-out);
}

.cases__cta-btn:hover svg {
  transform: translateX(4px);
}

/* --- Filter animation: hide/show --- */
.cases__card[data-hidden="true"] {
  display: none;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

/* Tablet: keep 2 columns but shrink image */
@media (max-width: 1024px) {
  .cases {
    padding: 80px 0 72px;
  }

  .cases__card-img {
    width: 200px;
    min-width: 200px;
    min-height: 160px;
  }

  .cases__card-body {
    padding: 20px 20px 18px;
  }
}

/* Mobile: single column, image on top */
@media (max-width: 768px) {
  .cases {
    padding: 64px 0 56px;
  }

  .cases__header {
    margin-bottom: 36px;
  }

  .cases__filters {
    margin-bottom: 32px;
    gap: 8px;
  }

  .cases__filter {
    font-size: 12px;
    padding: 6px 16px;
  }

  .cases__grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .cases__card {
    flex-direction: column;
  }

  .cases__card-img {
    width: 100%;
    min-width: unset;
    min-height: 180px;
    max-height: 200px;
  }

  .cases__card-body {
    padding: 20px;
  }

  .cases__card-title {
    font-size: 15px;
  }

  .cases__card-more {
    align-self: flex-end;
  }

  .cases__cta {
    margin-top: 40px;
  }

  .cases__cta-btn {
    font-size: 14px;
    padding: 14px 36px;
  }
}

/* Small mobile */
@media (max-width: 480px) {
  .cases__card-img {
    min-height: 140px;
    max-height: 160px;
  }

  .cases__card-body {
    padding: 16px;
  }
}