/* ─────────────────────────────────────────────────────────────
   Case studies
   Scoped components, built on the tokens in main.css
   (--signal, --off-white, --black, --mid, --font-serif/head/mono)
   ───────────────────────────────────────────────────────────── */

.cs-hero {
  padding: 150px 0 70px;
  background: var(--off-white);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cs-hero .container { position: relative; z-index: 1; }
.cs-orb {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  opacity: 0.12;
  filter: blur(60px);
  background: var(--signal);
}
.cs-orb-1 { width: 380px; height: 380px; top: -120px; right: -80px; }
.cs-orb-2 { width: 240px; height: 240px; bottom: -90px; left: -50px; background: #ff8a65; }

.cs-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--signal);
  margin-bottom: 18px;
}
.cs-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 6vw, 4.4rem);
  line-height: 1.05;
  margin: 0 auto 20px;
  max-width: 18ch;
}
.cs-hero .cs-sub {
  font-size: 1.12rem;
  color: var(--mid);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.7;
}
.cs-meta {
  display: flex; flex-wrap: wrap; gap: 10px 26px; justify-content: center;
  margin-top: 30px;
  font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--mid);
}
.cs-meta span strong { color: var(--black); font-weight: 700; }

/* Stat band that overlaps the hero */
.cs-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
  max-width: 1000px; margin: -44px auto 0; padding: 0 24px;
  position: relative; z-index: 3;
}
.cs-stat {
  background: #fff; border: 1px solid rgba(0,0,0,0.06);
  border-radius: 16px; padding: 26px 18px; text-align: center;
  box-shadow: 0 14px 44px rgba(0,0,0,0.07);
}
.cs-stat .num {
  font-family: var(--font-serif); font-size: clamp(1.7rem, 3.8vw, 2.5rem);
  color: var(--black); line-height: 1;
}
.cs-stat .num em { color: var(--signal); font-style: normal; }
.cs-stat .lbl {
  font-family: var(--font-mono); font-size: 0.6rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--mid); margin-top: 12px; line-height: 1.4;
}

/* Narrative */
.cs-section { padding: 80px 0; }
.cs-section.alt { background: var(--off-white); }
.cs-narrative { max-width: 760px; margin: 0 auto; padding: 0 24px; }
.cs-block { margin-bottom: 52px; }
.cs-block:last-child { margin-bottom: 0; }
.cs-block .k {
  font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--signal); margin-bottom: 14px;
}
.cs-block h2 {
  font-family: var(--font-serif); font-size: clamp(1.7rem, 3.4vw, 2.4rem);
  margin-bottom: 16px; line-height: 1.15;
}
.cs-block p { color: #444; font-size: 1.06rem; line-height: 1.8; margin-bottom: 14px; }
.cs-block p:last-child { margin-bottom: 0; }

.cs-list { list-style: none; margin: 20px 0 0; padding: 0; }
.cs-list li { position: relative; padding-left: 30px; margin-bottom: 14px; color: #444; font-size: 1.04rem; line-height: 1.6; }
.cs-list li::before {
  content: ''; position: absolute; left: 0; top: 9px; width: 8px; height: 8px;
  border-radius: 50%; background: var(--signal);
}

/* Pull quote */
.cs-quote { max-width: 820px; margin: 0 auto; padding: 0 24px; text-align: center; }
.cs-quote blockquote {
  font-family: var(--font-serif); font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  line-height: 1.4; color: var(--black); margin: 0;
}
.cs-quote .by {
  font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--mid); margin-top: 22px;
}

/* Index / landing grid */
.cs-index { padding: 140px 0 30px; text-align: center; background: var(--off-white); }
.cs-index h1 { font-family: var(--font-serif); font-size: clamp(2.6rem, 6vw, 4.2rem); margin: 16px auto 18px; }
.cs-index p { color: var(--mid); font-size: 1.12rem; max-width: 600px; margin: 0 auto; line-height: 1.7; }
.cs-grid-wrap { background: var(--off-white); padding: 56px 0 90px; }
.cs-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; max-width: 1040px; margin: 0 auto; padding: 0 24px; }
.cs-card {
  display: flex; flex-direction: column; background: #fff;
  border: 1px solid rgba(0,0,0,0.07); border-radius: 20px; padding: 38px 34px;
  text-decoration: none; color: inherit;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.cs-card:hover { transform: translateY(-5px); box-shadow: 0 22px 54px rgba(0,0,0,0.10); border-color: rgba(230,59,46,0.32); }
.cs-card-tag { font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--signal); }
.cs-card h3 { font-family: var(--font-serif); font-size: clamp(1.6rem, 3vw, 2.1rem); margin: 12px 0 10px; }
.cs-card-desc { color: var(--mid); font-size: 0.98rem; line-height: 1.6; margin-bottom: 24px; flex-grow: 1; }
.cs-card-stats { display: flex; gap: 28px; flex-wrap: wrap; border-top: 1px solid rgba(0,0,0,0.07); padding-top: 20px; }
.cs-card-stats .n { font-family: var(--font-serif); font-size: 1.5rem; color: var(--black); line-height: 1; }
.cs-card-stats .l { font-family: var(--font-mono); font-size: 0.56rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--mid); margin-top: 6px; }
.cs-card-link { margin-top: 24px; font-family: var(--font-head); font-weight: 600; font-size: 0.92rem; color: var(--signal); display: inline-flex; align-items: center; gap: 8px; }
.cs-card:hover .cs-card-link { gap: 12px; }

/* Closing CTA */
.cs-cta { padding: 90px 0; text-align: center; background: var(--black); color: #fff; }
.cs-cta h2 { font-family: var(--font-serif); font-size: clamp(2rem, 4vw, 3rem); margin-bottom: 14px; color: #fff; }
.cs-cta p { color: rgba(255,255,255,0.7); max-width: 520px; margin: 0 auto 30px; line-height: 1.7; }

/* Back link */
.cs-back { max-width: 760px; margin: 0 auto; padding: 28px 24px 0; }
.cs-back a { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--mid); text-decoration: none; }
.cs-back a:hover { color: var(--signal); }

@media (max-width: 860px) {
  .cs-stats { grid-template-columns: repeat(2, 1fr); }
  .cs-grid { grid-template-columns: 1fr; }
}