/* case.css — Case study page layout */

.case-hero {
  padding: 160px var(--pad-x) 80px;
  background: var(--kp-paper);
  border-bottom: 1px solid var(--kp-rule);
}
.case-hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}
.case-back {
  display: flex;
  width: fit-content;
  align-items: center;
  gap: 6px;
  font-family: var(--kp-font-label);
  font-size: var(--kp-fs-label);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--kp-ink-60);
  margin-bottom: 56px;
  transition: color 0.2s ease, gap 0.25s ease;
}
.case-back:hover { color: var(--kp-cherry); gap: 12px; }

.case-kicker {
  font-family: var(--kp-font-label);
  font-size: var(--kp-fs-label);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--kp-ink-60);
  margin-bottom: 24px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.case-kicker::before {
  content: "";
  display: inline-block;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: transparent;
  border: 2.5px solid var(--kp-cherry);
  box-sizing: border-box;
}
.case-kicker strong { color: var(--kp-cherry); font-weight: 500; }

.case-title {
  font-family: var(--kp-font-serif);
  font-weight: 400;
  font-size: clamp(44px, 6vw, 80px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  max-width: 18ch;
  margin: 0 0 32px;
}
.case-title em { color: var(--kp-cherry); font-style: italic; }

.case-lede {
  font-family: var(--kp-font-serif);
  font-size: clamp(20px, 1.7vw, 26px);
  line-height: 1.4;
  color: var(--kp-ink);
  max-width: 56ch;
  font-style: italic;
  margin: 0 0 64px;
}

.case-meta {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px;
  padding: 24px 0;
  border-top: 1px solid var(--kp-rule);
  border-bottom: 1px solid var(--kp-rule);
}
@media (max-width: 720px) {
  .case-meta { grid-template-columns: repeat(2, 1fr); gap: 20px; }
}
.case-meta-item { display: flex; flex-direction: column; gap: 6px; }
.case-meta-key {
  font-family: var(--kp-font-label);
  font-size: var(--kp-fs-label);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--kp-ink-60);
}
.case-meta-val {
  font-family: var(--kp-font-sans);
  font-size: 15px;
  font-weight: 500;
  color: var(--kp-ink);
}

/* ── Sections ─────────────────────────────────────────────────────── */
.case-section {
  padding: clamp(64px, 8vw, 96px) var(--pad-x);
  border-bottom: 1px solid var(--kp-rule);
}
.case-section:last-of-type { border-bottom: 0; }
.case-section.on-bone { background: var(--kp-bone); }

.case-section-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 56px;
}
@media (max-width: 880px) {
  .case-section-inner { grid-template-columns: 1fr; gap: 32px; }
}

.case-section-label {
  font-family: var(--kp-font-label);
  font-size: var(--kp-fs-label);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--kp-ink-60);
  position: sticky;
  top: 100px;
  align-self: start;
}
.case-section-label .num {
  display: block;
  font-family: var(--kp-font-serif);
  font-size: 48px;
  color: var(--kp-cherry);
  line-height: 1;
  margin-bottom: 8px;
}

.case-body { max-width: 880px; }
.case-h2 {
  font-family: var(--kp-font-serif);
  font-weight: 400;
  font-size: clamp(28px, 3vw, 40px);
  line-height: 1.1;
  letter-spacing: -0.014em;
  margin: 0 0 24px;
  color: var(--kp-ink);
}
.case-h2 em { color: var(--kp-cherry); font-style: italic; }

.case-body p {
  font-family: var(--kp-font-sans);
  font-size: 17px;
  line-height: 1.65;
  color: var(--kp-ink);
  margin: 0 0 18px;
  max-width: 68ch;
}
.case-body p + p { margin-top: 0; }

.case-pullquote {
  font-family: var(--kp-font-serif);
  font-style: italic;
  font-size: clamp(24px, 2.4vw, 32px);
  line-height: 1.25;
  color: var(--kp-cherry);
  padding: 24px 0 24px 24px;
  border-left: 2px solid var(--kp-cherry);
  margin: 32px 0;
  max-width: 30ch;
}

.case-list {
  list-style: none;
  padding: 0;
  margin: 24px 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
  counter-reset: case-list;
}
.case-list li {
  position: relative;
  padding-left: 40px;
  font-family: var(--kp-font-sans);
  font-size: 16px;
  line-height: 1.55;
  color: var(--kp-ink);
  max-width: 64ch;
}
.case-list li::before {
  content: counter(case-list, decimal-leading-zero);
  counter-increment: case-list;
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--kp-font-label);
  font-size: var(--kp-fs-label);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--kp-cherry);
}
.case-list li strong { font-weight: 600; }

.case-screen {
  margin: 32px 0;
  background: var(--kp-bone);
  border: 1px solid var(--kp-rule);
  border-radius: var(--kp-radius-sm);
  aspect-ratio: 16/10;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--kp-font-label);
  font-size: var(--kp-fs-label);
  letter-spacing: 0.04em;
  color: var(--kp-ink-60);
  text-align: center;
  padding: 24px;
}
.case-screen-caption {
  font-family: var(--kp-font-label);
  font-size: var(--kp-fs-label);
  letter-spacing: 0.04em;
  color: var(--kp-ink-60);
  margin-top: -16px;
  margin-bottom: 32px;
  padding: 0 4px;
}

/* ── Real image figure ────────────────────────────────────────────── */
.case-figure {
  margin: 32px 0;
}
.case-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--kp-rule);
  border-radius: var(--kp-radius-sm);
  background: #fff;
}
.case-figure-plain img {
  border: 0;
  border-radius: 0;
  background: transparent;
}
.case-figure figcaption {
  font-family: var(--kp-font-label);
  font-size: var(--kp-fs-label);
  letter-spacing: 0.04em;
  color: var(--kp-ink-60);
  margin-top: 14px;
  padding: 0 4px;
  line-height: 1.5;
}

.case-screens-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 32px 0;
}
@media (max-width: 720px) {
  .case-screens-row { grid-template-columns: 1fr; }
}
.case-screens-row .case-screen { margin: 0; aspect-ratio: 4/3; }
.case-screen-img {
  margin: 0;
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  object-position: top center;
  background: var(--kp-bone);
  border: 1px solid var(--kp-rule);
  border-radius: var(--kp-radius-sm);
  display: block;
}
.case-screen-img-contain {
  object-fit: contain;
  object-position: center;
  background: #fff;
  padding: 16px;
}

/* ── Outcome metrics ──────────────────────────────────────────────── */
.case-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 32px 0 0;
}
@media (max-width: 720px) {
  .case-metrics { grid-template-columns: 1fr; }
}
.case-metric {
  padding: 28px 24px;
  background: var(--kp-paper);
  border: 1px solid var(--kp-rule);
  border-radius: var(--kp-radius-sm);
}
.case-metric-num {
  font-family: var(--kp-font-serif);
  font-size: clamp(40px, 4vw, 56px);
  line-height: 1;
  color: var(--kp-cherry);
  letter-spacing: -0.02em;
}
.case-metric-lbl {
  font-family: var(--kp-font-sans);
  font-size: 14px;
  color: var(--kp-ink);
  margin-top: 12px;
  line-height: 1.4;
}

/* ── Next case CTA ────────────────────────────────────────────────── */
.case-next {
  padding: clamp(64px, 8vw, 96px) var(--pad-x);
  background: var(--kp-ink);
  color: var(--kp-bone);
  text-align: center;
}
.case-next-kicker {
  font-family: var(--kp-font-label);
  font-size: var(--kp-fs-label);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--kp-bone);
  opacity: 0.7;
}
.case-next-title {
  font-family: var(--kp-font-serif);
  font-weight: 400;
  font-size: clamp(36px, 4.4vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.016em;
  margin: 12px 0 24px;
  color: var(--kp-bone);
}
.case-next-title em { color: var(--kp-cherry); font-style: italic; }
.case-next-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--kp-font-sans);
  font-size: 16px;
  font-weight: 500;
  color: var(--kp-cherry);
  border-bottom: 1px solid var(--kp-cherry);
  padding-bottom: 4px;
  transition: gap 0.25s ease;
}
.case-next-link:hover { gap: 14px; }

/* ── Comparison grid (design vs AI) ───────────────────────────────── */
.case-compare {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 36px 0;
}
.case-compare.is-two { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 880px) {
  .case-compare,
  .case-compare.is-two { grid-template-columns: 1fr; gap: 28px; }
}
.case-compare figure { margin: 0; }
.case-compare-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.case-compare-tag {
  font-family: var(--kp-font-label);
  font-size: var(--kp-fs-label);
  font-weight: 500;
  letter-spacing: 0.04em;
  padding: 4px 9px;
  border-radius: var(--kp-radius-pill);
  flex-shrink: 0;
}
.case-compare-tag.is-yours { background: var(--kp-cherry-tint); color: var(--kp-cherry); }
.case-compare-tag.is-ai {
  background: var(--kp-bone);
  color: var(--kp-ink-60);
  border: 1px solid var(--kp-rule);
}
.case-compare-name {
  font-family: var(--kp-font-sans);
  font-size: 14px;
  font-weight: 500;
  color: var(--kp-ink);
}
.case-compare img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--kp-rule);
  border-radius: var(--kp-radius-sm);
  background: #fff;
}
.case-compare figcaption {
  font-family: var(--kp-font-label);
  font-size: var(--kp-fs-label);
  letter-spacing: 0.04em;
  color: var(--kp-ink-60);
  margin-top: 12px;
  line-height: 1.5;
}

/* ── Numbered design-decision annotations ─────────────────────────── */
.case-annotations {
  margin: 32px 0 8px;
  border-top: 1px solid var(--kp-rule);
}
.case-annotation {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 24px;
  padding: 26px 0;
  border-bottom: 1px solid var(--kp-rule);
}
@media (max-width: 600px) {
  .case-annotation { grid-template-columns: 1fr; gap: 10px; }
}
.case-annotation-num {
  font-family: var(--kp-font-serif);
  font-size: 32px;
  line-height: 1;
  color: var(--kp-cherry);
}
.case-annotation h3 {
  font-family: var(--kp-font-serif);
  font-weight: 400;
  font-size: 23px;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--kp-ink);
  margin: 0 0 10px;
}
.case-annotation p {
  font-family: var(--kp-font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--kp-ink);
  margin: 0;
  max-width: 64ch;
}
.case-annotation p + p { margin-top: 12px; }