/* Case study cover widget. Paper-mockup asset sibling of
   whitepaper-cover, tuned for case studies: smaller "Case Study · Sector"
   kicker, prominent customer line, headline, and a lead-metric callout
   pinned to the bottom as the visual anchor. */

.case-cover {
  width: 100%;
  max-width: 22rem;
  margin-inline: auto;
  padding: 0.5rem;
  transform: rotate(-0.75deg);
  transition: transform var(--dur-med) var(--ease);
}
.case-cover:hover { transform: rotate(-0.25deg) translateY(-2px); }

@media (prefers-reduced-motion: reduce) {
  .case-cover,
  .case-cover:hover { transform: none; }
}

.case-cover__paper {
  position: relative;
  display: flex;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-lg);
  background: #fff;
  overflow: hidden;
  box-shadow:
    0 1px 0 rgb(255 255 255 / 70%) inset,
    0 18px 40px -20px rgb(16 17 20 / 30%),
    0 2px 6px rgb(16 17 20 / 8%);
}

.case-cover__spine {
  flex: 0 0 1.25rem;
  background: var(--brand-gradient);
  box-shadow:
    inset -1px 0 0 rgb(0 0 0 / 10%),
    2px 0 0 rgb(255 255 255 / 60%);
}

.case-cover__body {
  position: relative;
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  padding: 1.5rem 1.5rem 1.5rem;
  color: var(--on-light-foreground);
}

.case-cover__kicker {
  margin: 0;
  font-size: 0.625rem;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--on-light-muted-foreground);
  display: inline-flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem;
}
.case-cover__kicker-sep { color: color-mix(in oklch, var(--on-light-foreground) 30%, transparent); }

.case-cover__customer {
  margin: 0;
  font-family: var(--font-mono, var(--font-text));
  font-size: 0.6875rem;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: color-mix(in oklch, var(--brand-teal) 55%, var(--on-light-foreground));
}

.case-cover__headline {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.4vw, 1.625rem);
  font-weight: var(--font-weight-display);
  letter-spacing: -0.025em;
  line-height: 1.1;
  color: var(--on-light-foreground);
  text-wrap: balance;

  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 4;
  overflow: hidden;
}

.case-cover__metric {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
  padding: 0.75rem 0.875rem;
  border: 1px solid var(--on-light-border);
  border-radius: var(--radius-md);
  background: color-mix(in oklch, var(--on-light-foreground) 3%, #fff);
}

.case-cover__metric-value {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  font-weight: var(--font-weight-display);
  letter-spacing: -0.02em;
  line-height: 1;
  color: color-mix(in oklch, var(--brand-teal) 55%, var(--on-light-foreground));
}

.case-cover__metric-label {
  font-family: var(--font-mono, var(--font-text));
  font-size: 0.625rem;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--on-light-muted-foreground);
}

.case-cover__mark {
  position: absolute;
  bottom: 1rem;
  right: 1rem;
  width: 1.375rem;
  height: auto;
  opacity: 0.75;
}