/* ============================================================
   Case Studies — List + Detail page styles
   Reuses the global design tokens from style.css
   ============================================================ */

/* ── Shared page hero ─────────────────────────────────────── */
.cs-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--navbar-height) + 4rem) 0 3.5rem;
  background: radial-gradient(1200px 500px at 50% -10%, rgba(232, 51, 74, 0.12), transparent 60%),
              var(--color-primary);
  color: var(--color-white);
}
.cs-hero-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(circle at 50% 0, #000, transparent 70%);
  pointer-events: none;
}
.cs-hero .container { position: relative; z-index: 2; }
.cs-hero .section-label { color: var(--color-accent-2); }
.cs-hero-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  line-height: 1.15;
  margin: .5rem 0 1rem;
}
.cs-hero-title .accent { color: var(--color-accent); }
.cs-hero-sub {
  max-width: 640px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 1.05rem;
}

/* ── Breadcrumb (on dark hero) ────────────────────────────── */
.cs-breadcrumb { margin-top: 1.5rem; font-size: .9rem; }
.cs-breadcrumb ol { display: flex; flex-wrap: wrap; gap: .4rem; align-items: center; list-style: none; margin: 0; padding: 0; }
.cs-breadcrumb li { list-style: none; }
.cs-breadcrumb a { color: rgba(255, 255, 255, 0.65); }
.cs-breadcrumb a:hover { color: var(--color-white); }
.cs-breadcrumb .sep { color: rgba(255, 255, 255, 0.35); }
.cs-breadcrumb .active { color: var(--color-accent-2); }

/* ── Category filter chips ────────────────────────────────── */
.cs-filters {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  justify-content: center;
  margin-bottom: 2.5rem;
}
.cs-chip {
  padding: .5rem 1.1rem;
  border-radius: 999px;
  border: 1px solid #e5e7eb;
  background: var(--color-white);
  color: var(--color-gray);
  font-weight: 500;
  font-size: .9rem;
  transition: var(--transition);
}
.cs-chip:hover { border-color: var(--color-accent); color: var(--color-accent); }
.cs-chip.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-white);
}

/* ── List section ─────────────────────────────────────────── */
.cs-list-section { padding: 4rem 0 5rem; background: var(--color-light-bg); }

.cs-item-card {
  position: relative;
  display: block;
  height: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-white);
  box-shadow: 0 4px 20px rgba(10, 10, 10, 0.06);
  transition: var(--transition);
}
.cs-item-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(10, 10, 10, 0.12); }
.cs-item-media { position: relative; aspect-ratio: 16 / 10; overflow: hidden; }
.cs-item-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.cs-item-card:hover .cs-item-media img { transform: scale(1.06); }
.cs-item-tag {
  position: absolute;
  top: 1rem;
  left: 1rem;
  padding: .35rem .8rem;
  border-radius: 999px;
  background: rgba(10, 10, 10, 0.65);
  backdrop-filter: blur(6px);
  color: var(--color-white);
  font-size: .78rem;
  font-weight: 600;
}
.cs-item-body { padding: 1.5rem; }
.cs-item-metric {
  display: inline-flex;
  align-items: baseline;
  gap: .35rem;
  color: var(--color-accent);
  font-weight: 700;
  font-size: 1.4rem;
  line-height: 1;
}
.cs-item-metric span { font-size: .82rem; color: var(--color-gray); font-weight: 500; }
.cs-item-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.2rem;
  margin: .6rem 0 .5rem;
  color: var(--color-primary);
}
.cs-item-desc {
  color: var(--color-gray);
  font-size: .93rem;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.cs-item-link {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  margin-top: 1rem;
  color: var(--color-accent);
  font-weight: 600;
  font-size: .92rem;
}
.cs-item-card:hover .cs-item-link i { transform: translateX(4px); }
.cs-item-link i { transition: transform .3s ease; }

.cs-empty {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--color-gray);
}

/* ── Detail page ──────────────────────────────────────────── */
.cs-detail-section { padding: 4rem 0 2rem; }
.cs-detail-metric-badge {
  display: inline-flex;
  align-items: baseline;
  gap: .5rem;
  padding: .6rem 1.2rem;
  border-radius: 999px;
  background: rgba(232, 51, 74, 0.1);
  color: var(--color-accent);
  font-weight: 700;
  font-size: 1.5rem;
  margin-top: 1rem;
}
.cs-detail-metric-badge span { font-size: .9rem; color: var(--color-gray); font-weight: 500; }

.cs-detail-image {
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(10, 10, 10, 0.15);
  margin-bottom: 3rem;
}
.cs-detail-image img {
  width: 100%;
  height: auto;
  max-height: 460px;
  aspect-ratio: 16 / 7;
  object-fit: cover;
  object-position: center;
  display: block;
}
@media (max-width: 768px) {
  .cs-detail-image img { aspect-ratio: 16 / 10; max-height: 320px; }
}

.cs-detail-body {
  max-width: 100%;
  width: 100%;
  margin: 0;
}
.cs-detail-body h2 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.6rem;
  margin: 0 0 1rem;
}
.cs-section-head {
  display: flex;
  align-items: center;
  gap: .7rem;
  margin-top: 2.75rem !important;
}
.cs-section-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 12px;
  font-size: 1.1rem;
  flex-shrink: 0;
}

/* Project meta strip */
.cs-meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  background: #eef1f5;
  border: 1px solid #eef1f5;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 2.5rem;
}
.cs-meta-item {
  display: flex;
  flex-direction: column;
  gap: .3rem;
  padding: 1.1rem 1.3rem;
  background: var(--color-white);
}
.cs-meta-label { font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; color: var(--color-gray); font-weight: 600; }
.cs-meta-value { font-weight: 700; color: var(--color-primary); font-size: 1.05rem; }

/* Technology tags */
.cs-tech-tags { display: flex; flex-wrap: wrap; gap: .6rem; }
.cs-tech-tag {
  padding: .5rem 1rem;
  border-radius: 999px;
  background: var(--color-light-bg);
  border: 1px solid #e5e7eb;
  color: #374151;
  font-weight: 500;
  font-size: .9rem;
}
.cs-detail-prose {
  color: #374151;
  font-size: 1.08rem;
  line-height: 1.85;
}
.cs-detail-prose p { margin-bottom: 1.2rem; }

.cs-stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  margin: 2.5rem 0;
}
.cs-stat-card {
  padding: 1.6rem 1.4rem;
  border-radius: var(--radius-md);
  background: var(--color-light-bg);
  border: 1px solid #eef1f5;
  text-align: center;
}
.cs-stat-value { color: var(--color-accent); font-weight: 700; font-size: 2rem; line-height: 1; }
.cs-stat-label { color: var(--color-gray); font-size: .9rem; margin-top: .4rem; }

/* ── Related + CTA ────────────────────────────────────────── */
.cs-related-section { padding: 4rem 0; background: var(--color-light-bg); }
.cs-cta-band {
  text-align: center;
  padding: 3.5rem 1.5rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--color-primary), #1c1c26);
  color: var(--color-white);
}
.cs-cta-band h2 { font-family: var(--font-heading); font-weight: 700; font-size: clamp(1.6rem, 3vw, 2.2rem); }
.cs-cta-band p { color: rgba(255, 255, 255, 0.72); max-width: 520px; margin: .75rem auto 1.75rem; }

.cs-btn-accent {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .85rem 1.8rem;
  border-radius: 999px;
  background: var(--color-accent);
  color: var(--color-white);
  font-weight: 600;
  transition: var(--transition);
}
.cs-btn-accent:hover { background: var(--color-accent-2); transform: translateY(-2px); color: var(--color-white); }

.cs-back-link {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  color: var(--color-gray);
  font-weight: 500;
  margin-bottom: 2rem;
}
.cs-back-link:hover { color: var(--color-accent); }