/* Attera — Case study page
   Hallmark · genre: modern-minimal · design-system: design.md
   Page family: Long Document (per design.md).
   Capability-led: shows what was built, not who used it. */


/* ===== Case header ===== */
.case-head {
  padding: var(--space-2xl) 0 var(--space-xl);
  border-bottom: 1px solid var(--rule);
}
.case-head__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mute);
  margin: 0 0 var(--space-lg);
}
.case-head__meta span[aria-hidden] { opacity: 0.5; }
.case-head__meta .case-status {
  color: var(--brand-deep);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.case-head__meta .case-status::before {
  content: "";
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 999px;
  background: var(--brand);
}

.case-head h1 {
  font-size: clamp(36px, 4.4vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.025em;
  max-width: 20ch;
  margin: 0 0 var(--space-md);
}
.case-head__lede {
  font-size: 17.5px;
  line-height: 1.6;
  color: var(--ink-2);
  max-width: 56ch;
  padding-left: var(--space-md);
  border-left: 2px solid var(--brand);
}


/* ===== Section spine — hanging label (reuse pattern from about) ===== */
.case-section {
  padding: var(--space-2xl) 0;
  border-top: 1px solid var(--rule);
}
.case-section__grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-2xl);
  align-items: start;
}
.case-section__label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mute);
  padding-top: 8px;
  position: sticky;
  top: 80px;
}
.case-section__label-index {
  display: block;
  color: var(--brand-deep);
  margin-bottom: 4px;
}
.case-section__content { min-width: 0; }
.case-section__content h2 {
  font-size: clamp(24px, 2.6vw, 32px);
  max-width: 24ch;
  margin: 0 0 var(--space-md);
}
.case-section__content p {
  font-size: 16.5px;
  line-height: 1.65;
  color: var(--ink-2);
  max-width: 64ch;
  margin: 0 0 var(--space-md);
}
.case-section__content p:last-child { margin-bottom: 0; }
.case-section__content strong { color: var(--ink); font-weight: 600; }

@media (max-width: 880px) {
  .case-section__grid { grid-template-columns: 1fr; gap: var(--space-md); }
  .case-section__label { position: static; padding-top: 0; }
}


/* ===== Capability list — the 9 document categories =====
   Tabular, hairline-separated. Reads as a spec sheet, not a menu. */
.cap-list {
  margin: var(--space-md) 0 0;
  border-top: 1px solid var(--rule);
}
.cap-list__item {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-lg);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--rule-soft);
  align-items: baseline;
}
.cap-list__item:last-child { border-bottom: 1px solid var(--rule); }
.cap-list__name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15.5px;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.cap-list__fields {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--mute);
}
.cap-list__fields strong {
  display: inline;
  color: var(--ink-2);
  font-weight: 500;
}

@media (max-width: 720px) {
  .cap-list__item { grid-template-columns: 1fr; gap: 6px; }
}


/* ===== Synthetic specimen wrapper =====
   Same widget as the homepage specimen, with an "illustrative" caption
   that flags the values as synthesised. */
.case-specimen-wrap {
  margin: var(--space-md) 0 0;
  max-width: 640px;
}
.case-specimen-caption {
  margin: var(--space-sm) 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--mute);
}
.case-specimen-caption::before {
  content: "illustrative · ";
  color: var(--brand-deep);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-right: 4px;
}


/* ===== Flow diagram — 4-step pipeline =====
   Numbered, hairline-separated, NOT a 3-card grid. */
.case-flow {
  margin: var(--space-md) 0 0;
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--rule);
}
.case-flow__step {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--rule-soft);
}
.case-flow__step:last-child { border-bottom: 1px solid var(--rule); }
.case-flow__num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--brand-deep);
  padding-top: 3px;
}
.case-flow__step h4 {
  margin: 0 0 6px;
  font-size: 16px;
  letter-spacing: -0.01em;
}
.case-flow__step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--ink-2);
  max-width: 58ch;
}


/* ===== Pattern strip — what generalises ===== */
.case-pattern {
  background: var(--paper-2);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: var(--space-2xl) 0;
}
.case-pattern__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: start;
}
.case-pattern h2 {
  font-size: clamp(22px, 2.4vw, 28px);
  max-width: 22ch;
  margin: 0 0 var(--space-md);
}
.case-pattern p {
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink-2);
  margin: 0 0 var(--space-md);
}
.case-pattern__fit {
  background: var(--paper-3);
  border: 1px solid var(--rule);
  border-radius: var(--radius-card);
  padding: var(--space-md);
}
.case-pattern__fit h3 {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mute);
  margin: 0 0 var(--space-sm);
}
.case-pattern__fit ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--ink-2);
}
.case-pattern__fit li {
  padding-left: var(--space-md);
  position: relative;
}
.case-pattern__fit li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--brand-deep);
  font-family: var(--font-mono);
  font-weight: 500;
}

@media (max-width: 880px) {
  .case-pattern__grid { grid-template-columns: 1fr; gap: var(--space-lg); }
}


/* ===== CTA at end of case ===== */
.case-cta {
  padding: var(--space-3xl) 0;
}
.case-cta__inner {
  max-width: 56ch;
}
.case-cta h2 {
  font-size: clamp(26px, 3vw, 36px);
  max-width: 22ch;
  margin: 0 0 var(--space-md);
}
.case-cta p {
  color: var(--ink-2);
  margin: 0 0 var(--space-lg);
  font-size: 16px;
  line-height: 1.6;
}
.case-cta__ctas {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}