/* ========================================
   CASE STUDIES HERO
   ======================================== */

.cs-hero {
  position: relative;
  padding: 140px 0 80px;
  text-align: center;
  overflow: hidden;
  background-color: var(--bg-deep);
}

.cs-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.cs-hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.cs-hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse at center,
    rgba(7, 12, 24, 0.6) 0%,
    rgba(7, 12, 24, 0.95) 70%
  );
}

.cs-hero-inner {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
}

.cs-hero-inner h1 {
  margin-bottom: 20px;
}

.cs-hero-inner p {
  color: var(--text-2);
  font-size: 1.1rem;
  line-height: 1.7;
}

/* ========================================
   CASE STUDY CARDS GRID
   ======================================== */

.cs-listing {
  padding: 80px 0;
}

.cs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.cs-card {
  background-color: var(--bg-card);
  border: 1px solid var(--bg-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.2s, transform 0.2s;
  text-decoration: none;
  color: inherit;
  display: block;
}

.cs-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  color: inherit;
}

.cs-card-image {
  width: 100%;
  height: 200px;
  overflow: hidden;
}

.cs-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.cs-card:hover .cs-card-image img {
  transform: scale(1.03);
}

.cs-card-body {
  padding: 28px;
}

.cs-card-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}

.cs-card-body h3 {
  font-size: 1.2rem;
  margin-bottom: 16px;
  line-height: 1.35;
}

.cs-card-stats {
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
}

.cs-card-stat {
  padding: 6px 14px;
  border-radius: 20px;
  background-color: rgba(37, 99, 235, 0.1);
  border: 1px solid rgba(37, 99, 235, 0.2);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  white-space: nowrap;
}

.cs-card-stat .stat-num {
  color: var(--text-1);
}

.cs-card-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.cs-card:hover .cs-card-link {
  gap: 10px;
}

/* ========================================
   CASE STUDY DETAIL
   ======================================== */

.case-detail {
  padding: 100px 0;
  border-bottom: 1px solid var(--bg-border);
}

.case-detail:nth-child(even) {
  background-color: var(--bg-card);
}

.case-detail-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.case-detail-inner.reversed {
  direction: rtl;
}

.case-detail-inner.reversed > * {
  direction: ltr;
}

.case-detail-content .tag {
  margin-bottom: 12px;
}

.case-detail-content h2 {
  margin-bottom: 20px;
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1.3;
}

.case-detail-content .case-stats-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.case-detail-content .cs-card-stat {
  font-size: 0.82rem;
}

.case-detail-content h3 {
  font-size: 1.1rem;
  margin-bottom: 12px;
  margin-top: 32px;
}

.case-detail-content h3:first-of-type {
  margin-top: 0;
}

.case-detail-content .case-text {
  color: var(--text-2);
  font-size: 0.95rem;
  line-height: 1.75;
  margin-bottom: 20px;
}

.case-detail-content .case-text p + p {
  margin-top: 16px;
}

.case-detail-content ul.case-results {
  list-style: none;
  margin-bottom: 28px;
}

.case-detail-content ul.case-results li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 8px;
  font-size: 0.92rem;
  color: var(--text-1);
  line-height: 1.5;
}

.case-detail-content ul.case-results li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 5px;
  width: 18px;
  height: 18px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 18 18'%3E%3Ccircle cx='9' cy='9' r='9' fill='%2310B981' opacity='0.15'/%3E%3Cpath d='M6 9l2 2 4-4' stroke='%2310B981' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
}

.case-detail-content .tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}

.case-detail-content .tech-tag {
  display: inline-block;
  padding: 5px 12px;
  border-radius: 4px;
  background-color: rgba(37, 99, 235, 0.08);
  border: 1px solid rgba(37, 99, 235, 0.15);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
}

/* Case study visual (right column) */

.case-visual {
  position: sticky;
  top: 96px;
}

.case-visual img {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--bg-border);
}

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

@media (max-width: 960px) {
  .cs-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .case-detail-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .case-detail-inner.reversed {
    direction: ltr;
  }

  .case-visual {
    position: static;
    order: -1;
  }

  .cs-card-image {
    height: 180px;
  }
}

@media (max-width: 600px) {
  .cs-hero {
    padding: 120px 0 60px;
  }

  .cs-hero-inner p {
    font-size: 1rem;
  }

  .cs-listing {
    padding: 60px 0;
  }

  .case-detail {
    padding: 64px 0;
  }

  .cs-card-body {
    padding: 20px;
  }

  .cs-card-stats {
    flex-wrap: wrap;
    gap: 8px;
  }

  .cs-card-stat {
    font-size: 0.75rem;
    padding: 4px 10px;
  }

  .case-detail-content .case-stats-row {
    flex-direction: column;
    gap: 8px;
  }
}