/* Workshop case studies: the index at /case-studies/ and each study page.
   Built on the shared tokens in styles.css; prose comes from blog.css. */

/* ---------- index ---------- */

.cs-index-head {
  padding: 3.2rem 0 1.6rem;
  max-width: 900px;
}

.cs-index-head h1 {
  margin: 0 0 1rem;
  font-size: clamp(2.1rem, 4.2vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.cs-index-sub {
  margin: 0;
  max-width: 62ch;
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--ink-soft);
}

.cs-index-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.4rem;
  margin: 1.6rem 0 0;
  font-size: 0.9rem;
  font-weight: 700;
}

.cs-index-jump a {
  color: var(--accent-blue);
  text-decoration: none;
}

.cs-index-jump a:hover {
  text-decoration: underline;
}

.cs-index-section {
  padding: 2.4rem 0 0;
  scroll-margin-top: 2rem;
}

.cs-index-industry {
  margin: 0 0 1.2rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--line);
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}

/* ---------- cards ---------- */

.cs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.4rem;
}

.cs-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.7rem 1.6rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  color: inherit;
  text-decoration: none;
}

.cs-card:hover {
  border-color: var(--accent-blue);
}

.cs-card h3 {
  margin: 0;
  font-size: 1.08rem;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.cs-card-tag {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-blue);
}

.cs-card-who {
  font-size: 0.82rem;
  color: var(--ink-faint);
}

.cs-card-link {
  margin-top: auto;
  padding-top: 0.5rem;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--accent-blue);
}

/* ---------- one case study ---------- */

.cs-benefit-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.cs-benefit-list li {
  position: relative;
  padding-left: 1.5rem;
  line-height: 1.55;
  color: var(--ink-soft);
}

.cs-benefit-list li::before {
  content: "\2192"; /* arrow, as on the old pages */
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

/* ---------- related ---------- */

.cs-related {
  padding: 3rem 0;
  border-top: 1px solid var(--line);
}

.cs-related h2 {
  margin: 0 0 1.6rem;
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
  letter-spacing: -0.02em;
}

@media (max-width: 980px) {
  .cs-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .cs-aside {
    position: static;
  }
}