/* ============================================
   Project Cases
   ============================================ */
.cases {
  padding: var(--sp-7) 0;
  background: var(--c-bg-soft);
}
.case-group {
  margin-bottom: var(--sp-6);
}
.case-group:last-child { margin-bottom: 0; }
.case-group__head {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-4);
  padding-bottom: var(--sp-3);
  border-bottom: 2px solid var(--c-line);
}
.case-group__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--c-primary);
  color: #fff;
  border-radius: var(--r-2);
  font-size: 18px;
  font-weight: 800;
}
.case-group__head h3 {
  font-size: 26px;
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}
.case-group__head p {
  font-size: 14px;
  color: var(--c-text-3);
}
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-3);
}
.case-card {
  background: #fff;
  border-radius: var(--r-3);
  overflow: hidden;
  border: 1px solid var(--c-line);
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
}
.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--sh-2);
  border-color: transparent;
}
.case-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.5s;
}
.case-card:hover img { transform: scale(1.05); }
.case-card__body {
  padding: var(--sp-3);
  display: flex;
  flex-direction: column;
  flex: 1;
}
.case-card__body h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 10px;
  line-height: 1.35;
}
.case-card__meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
  color: var(--c-text-3);
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--c-line);
}
.case-card__body p {
  font-size: 13px;
  color: var(--c-text-2);
  line-height: 1.6;
  flex: 1;
}
.case-card--big { grid-column: span 1; }
.case-card--big img { height: 240px; }
.case-card--big .case-card__body h4 { font-size: 18px; }

.case-tags {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-3);
}
.case-tag {
  background: #fff;
  border-radius: var(--r-3);
  padding: var(--sp-3);
  border-left: 4px solid var(--c-primary);
  border: 1px solid var(--c-line);
  border-left-width: 4px;
}
.case-tag strong {
  display: inline-block;
  font-size: 14px;
  color: var(--c-primary);
  background: var(--c-bg-soft);
  padding: 4px 10px;
  border-radius: 4px;
  margin-bottom: 8px;
  font-weight: 700;
}
.case-tag span {
  display: block;
  font-size: 14px;
  color: var(--c-text-2);
  line-height: 1.65;
}
.case-tag--special {
  grid-column: span 2;
  border-left-color: var(--c-warm);
}
.case-tag--special strong { color: var(--c-warm-2); background: rgba(245, 158, 11, 0.08); }

/* ============================================
   Responsive - Cases
   ============================================ */
@media (max-width: 1024px) {
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .case-card--big { grid-column: span 2; }
  .case-card--big img { height: 220px; }
  .case-tags { grid-template-columns: 1fr; }
  .case-tag--special { grid-column: span 1; }
}

@media (max-width: 768px) {
  .case-grid { grid-template-columns: 1fr; }
  .case-card--big { grid-column: span 1; }
  .case-group__head { flex-direction: column; align-items: flex-start; gap: 12px; }
  .case-group__head h3 { font-size: 22px; }
}

@media (max-width: 480px) {
  .case-card img, .case-card--big img { height: 180px; }
}