/* Case pages (business/, digital-transformation/). Builds on style.css tokens and panel/case/chips/pill classes. */

.cs { display: grid; gap: var(--gap); }
.cs-back { justify-self: start; }

/* ---------- shared type ---------- */
.cs-h1 { font-size: clamp(2.25rem, 6vw + 0.5rem, 4.5rem); font-weight: 700; letter-spacing: -0.045em; line-height: 0.98; text-wrap: balance; overflow-wrap: anywhere; }
.cs-h1__2 { color: var(--accent-ink); }
.cs-h2 { font-size: clamp(1.4rem, 1.4vw + 1rem, 2rem); font-weight: 600; letter-spacing: -0.02em; line-height: 1.2; max-width: 32ch; text-wrap: balance; }
.cs-headh { font: inherit; font-weight: 500; color: var(--ink-2); }
.cs-prose { margin-top: var(--s4); display: grid; gap: var(--s4); max-width: 68ch; }
.cs-prose p { color: var(--ink-2); font-size: 1.0625rem; line-height: 1.6; text-wrap: pretty; }

/* ---------- list page ---------- */
.cs-blurb { margin-top: var(--s4); color: var(--ink-2); font-size: var(--t-lg); line-height: 1.5; max-width: 56ch; text-wrap: pretty; }
.cs-switch { margin-top: var(--s5); display: flex; flex-wrap: wrap; align-items: center; gap: var(--s2) var(--s3); }
.cs-switch .lbl { margin: 0; }
.cs-intro .cs-h1 { margin-top: var(--s3); }

.cs-card { position: relative; transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease); }
.cs-card__h { font-size: var(--t-xl); font-weight: 600; letter-spacing: -0.015em; line-height: 1.2; }
.cs-card__h a { text-decoration: none; display: inline-flex; align-items: center; min-height: 44px; margin-block: -7px; }
/* Whole card is the click target; the heading link stays the single focusable element. */
.cs-card__h a::after { content: ""; position: absolute; inset: 0; border-radius: var(--radius); }
.cs-card__h a:focus-visible { outline: none; }
.cs-card:has(a:focus-visible) { box-shadow: 0 0 0 2px var(--accent); border-color: var(--accent); }
.cs-card:hover { border-color: var(--ink-3); }
.cs-card:hover .cs-card__h a { text-decoration: underline; text-underline-offset: 4px; text-decoration-thickness: 1px; }
.cs-card__stat { margin-top: var(--s4); font-family: var(--mono); font-weight: 500; font-size: clamp(1.75rem, 1.5vw + 1.25rem, 2.5rem); letter-spacing: -0.035em; line-height: 1.05; color: var(--accent-ink); overflow-wrap: anywhere; }
.cs-card__stat .lbl { letter-spacing: 0; color: var(--ink-3); }
.cs-card__foot { display: flex; align-items: center; justify-content: space-between; min-height: 48px; padding: 0 var(--s4); border-top: 1px solid var(--line); font-family: var(--mono); font-size: var(--t-xs); color: var(--ink-2); }
@media (min-width: 768px) { .cs-card__foot { padding: 0 var(--s5); } }
.cs-card:hover .cs-card__foot { color: var(--ink); background: var(--sunken); }

/* ---------- detail: cover ---------- */
.cs-cover .panel__body { padding-block: var(--s6); }
.cs-cover .cs-h1 { margin-top: var(--s3); }
.cs-tagline { margin-top: var(--s5); padding-top: var(--s4); border-top: 1px solid var(--line-strong); font-size: clamp(1.25rem, 1.2vw + 1rem, 1.75rem); font-weight: 500; letter-spacing: -0.015em; line-height: 1.3; max-width: 40ch; text-wrap: balance; }

/* ---------- detail: rail + chapters ---------- */
.cs-case { display: grid; gap: var(--gap); }
.cs-layout { display: grid; gap: var(--gap); align-items: start; }
.cs-chapters { display: grid; gap: var(--gap); min-width: 0; }
@media (min-width: 1024px) {
  .cs-layout { grid-template-columns: minmax(0, 3fr) minmax(0, 9fr); }
  .cs-rail { position: sticky; top: calc(var(--bar-h) + var(--s4)); }
}
.cs-facts { display: grid; gap: 0; }
.cs-facts > div { padding: var(--s3) 0; border-top: 1px solid var(--line); min-width: 0; }
.cs-facts > div:first-child { border-top: 0; padding-top: 0; }
.cs-facts dt { font-family: var(--mono); font-size: var(--t-xs); color: var(--ink-3); }
.cs-facts dd { margin: var(--s1) 0 0; font-size: var(--t-sm); line-height: 1.5; overflow-wrap: anywhere; }
@media (min-width: 600px) and (max-width: 1023px) {
  .cs-facts { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: var(--s5); }
  .cs-facts > div:nth-child(2) { border-top: 0; padding-top: 0; }
  .cs-facts > div:last-child { grid-column: 1 / -1; }
}
.cs-ext { display: inline-flex; align-items: center; gap: 4px; min-height: 44px; color: var(--accent-ink); text-underline-offset: 3px; }
.cs-ext:hover { color: var(--ink); }

/* numbered lists: approach steps, panel points, deliverables */
.cs-steps, .cs-points { margin-top: var(--s5); display: grid; max-width: 72ch; }
.cs-steps li, .cs-points li { display: grid; grid-template-columns: 2.75rem minmax(0, 1fr); gap: var(--s3); padding: var(--s4) 0; border-top: 1px solid var(--line); }
.cs-steps li:first-child, .cs-points li:first-child { border-top: 0; padding-top: 0; }
.cs-n { font-family: var(--mono); font-size: var(--t-sm); font-weight: 500; color: var(--accent-ink); padding-top: 2px; font-variant-numeric: tabular-nums; }
.cs-steps .cs-n { font-size: var(--t-lg); padding-top: 0; line-height: 1.35; }
.cs-steps p { font-size: 1.0625rem; line-height: 1.6; }
.cs-points p { color: var(--ink-2); line-height: 1.6; }
.cs-points--2 { margin-top: var(--s3); max-width: none; }
@media (min-width: 768px) {
  .cs-points--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: var(--s6); }
  .cs-points--2 li:nth-child(2) { border-top: 0; padding-top: 0; }
}

/* pull quote */
.cs-quote { margin: 0; border-left: 3px solid var(--accent); }
.cs-quote blockquote { margin: 0; }
.cs-quote blockquote p { font-size: clamp(1.35rem, 1.5vw + 1rem, 2.125rem); font-weight: 600; letter-spacing: -0.025em; line-height: 1.2; max-width: 34ch; text-wrap: balance; }
.cs-quote figcaption { margin: var(--s4) 0 0; color: var(--accent-ink); }

/* outcome */
.cs-results { margin-top: var(--s5); display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--ink-2); }
.cs-results > div { padding: var(--s4) var(--s3); border-bottom: 1px solid var(--line); border-left: 1px solid var(--line); display: flex; flex-direction: column-reverse; justify-content: flex-end; min-width: 0; }
.cs-results > div:nth-child(2n + 1) { border-left: 0; padding-left: 0; }
.cs-results dd { margin: 0; font-family: var(--mono); font-weight: 500; font-size: clamp(1.6rem, 2vw + 1rem, 2.75rem); letter-spacing: -0.04em; line-height: 1.05; color: var(--accent-ink); overflow-wrap: anywhere; }
.cs-results dt { margin-top: var(--s2); font-size: var(--t-sm); color: var(--ink-2); line-height: 1.4; }
@media (min-width: 900px) {
  .cs-results { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .cs-results > div:nth-child(2n + 1) { border-left: 1px solid var(--line); padding-left: var(--s3); }
  .cs-results > div:nth-child(3n + 1) { border-left: 0; padding-left: 0; }
}
.cs-shipped { margin-top: var(--s6); padding-top: var(--s5); border-top: 1px solid var(--line); }
.cs-shipped h3 { font-weight: 400; }

/* ---------- pager + CTA ---------- */
.cs-pager__row { display: grid; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 640px) { .cs-pager__row { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.cs-pg, .cs-twin { display: grid; gap: var(--s1); align-content: start; padding: var(--s5) var(--s4); text-decoration: none; min-height: 44px; min-width: 0; transition: background-color var(--dur) var(--ease); }
@media (min-width: 768px) { .cs-pg, .cs-twin { padding: var(--s5); } }
.cs-pg .lbl, .cs-twin .lbl { margin: 0; }
.cs-pg + .cs-pg { border-top: 1px solid var(--line); }
@media (min-width: 640px) {
  .cs-pg + .cs-pg { border-top: 0; border-left: 1px solid var(--line); }
  .cs-pg--next { text-align: right; }
}
@media (min-width: 640px) { .cs-pg--next { grid-column: 2; } }
.cs-twin { border-top: 1px solid var(--line); background: var(--accent-soft); }
.cs-pg__t { font-size: var(--t-xl); font-weight: 600; letter-spacing: -0.015em; line-height: 1.2; }
.cs-pg__m { font-family: var(--mono); font-size: var(--t-xs); color: var(--ink-3); }
a.cs-pg:hover, a.cs-twin:hover { background: var(--sunken); }
a.cs-pg:hover .cs-pg__t, a.cs-twin:hover .cs-pg__t { text-decoration: underline; text-underline-offset: 4px; text-decoration-thickness: 1px; }
.cs-pg:focus-visible, .cs-twin:focus-visible { outline-offset: -3px; }

.cs-cta .panel__body { padding-block: var(--s7); display: grid; justify-items: start; gap: var(--s3); }
.cs-cta .btn { margin-top: var(--s3); }

@media (prefers-reduced-motion: reduce) {
  .cs-card, .cs-pg, .cs-twin { transition: none; }
}