/* ============================================================
   CASE — Individual project page styles
   ============================================================ */

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

/* Shared utilities */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: var(--text-sm); font-weight: var(--weight-medium);
  border-radius: 100px; padding: var(--space-3) var(--space-6);
  transition: all var(--duration-fast) ease;
  cursor: pointer; font-family: var(--font-sans);
}
.btn--ghost { border: 1px solid var(--color-border); color: var(--color-text); background: transparent; }
.btn--ghost:hover { background: var(--color-surface); }

/* Scroll animations */
[data-animate] {
  opacity: 0; transform: translateY(20px);
  transition: opacity .7s var(--ease-out), transform .7s var(--ease-out);
}
[data-animate].visible { opacity: 1; transform: translateY(0); }
[data-animate-delay="1"] { transition-delay: 100ms; }
[data-animate-delay="2"] { transition-delay: 200ms; }

/* ── Layout ─────────────────────────────────────────────── */
.case-content {
  max-width: 720px;
}

/* ── Full-bleed image ───────────────────────────────────── */
.case-bleed-image {
  width: 100%;
  max-width: 1440px;
  margin-inline: auto;
  background: var(--color-surface);
  overflow: hidden;
}
.case-bleed-image img {
  width: 100%;
  display: block;
  object-fit: cover;
}

/* ── Intro block ────────────────────────────────────────── */
.case-intro { padding-top: 60px; padding-bottom: 40px; }
.case-intro .case-meta-row { margin-bottom: 0; }

/* ── Two-column label+content layout ───────────────────── */
.case-cols-wide {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: var(--space-8);
  align-items: start;
}

.case-col-label { padding-top: 4px; }
.case-col-main { min-width: 0; }

.case-tags { display: flex; flex-wrap: wrap; gap: var(--space-2); }

/* ── Big numbers strip ──────────────────────────────────── */
.case-numbers {
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--color-surface);
  border-radius: 0;
  padding-top: var(--space-12) !important;
  padding-bottom: var(--space-12) !important;
}

.case-number-card {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding-inline: var(--space-8);
}

.case-number-card:first-child { padding-left: 0; }

.case-number {
  font-size: clamp(3rem, 6vw, 5rem);
  font-weight: var(--weight-bold);
  letter-spacing: -0.05em;
  line-height: 1;
}
.case-number-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.4;
}

.case-number-divider {
  width: 1px;
  height: 64px;
  background: var(--color-border);
  flex-shrink: 0;
}

/* ── Pull quote ─────────────────────────────────────────── */
.case-pullquote {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  padding-top: var(--space-16) !important;
  padding-bottom: var(--space-16) !important;
}

.case-pullquote blockquote {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: var(--weight-bold);
  letter-spacing: -0.03em;
  line-height: 1.25;
  max-width: 760px;
  color: var(--color-text);
}

.case-pullquote__context {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 520px;
  line-height: var(--leading-normal);
}

/* ── Back link ──────────────────────────────────────────── */
.case-back {
  margin-bottom: var(--space-10);
}
.case-back a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--duration-fast) ease;
}
.case-back a:hover { color: var(--color-text); }

/* ── Hero ───────────────────────────────────────────────── */
.case-hero__content { max-width: 720px; margin-bottom: var(--space-10); }

.case-hero__tags {
  display: flex; flex-wrap: wrap; gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.case-tag {
  font-size: 11px; font-weight: 500;
  color: var(--color-text-muted);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  padding: 3px 12px;
  letter-spacing: .02em;
}

.case-title {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: var(--weight-bold);
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: var(--space-6);
}

.case-summary {
  font-size: var(--text-xl);
  color: var(--color-text-muted);
  line-height: var(--leading-normal);
  max-width: 620px;
}

.case-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
  padding: var(--space-8) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-12);
}

.case-meta-item { display: flex; flex-direction: column; gap: 4px; }
.case-meta-label {
  font-size: 10px; text-transform: uppercase;
  letter-spacing: .1em; color: var(--color-text-faint);
  font-weight: 600;
}
.case-meta-value { font-size: var(--text-sm); color: var(--color-text-muted); }

.case-hero__image {
  border-radius: 8px; overflow: hidden;
  background: var(--color-surface);
}
.case-hero__image img { width: 100%; object-fit: cover; }

/* ── Section labels ─────────────────────────────────────── */
.case-section-label {
  font-size: 10px; font-weight: 600;
  text-transform: uppercase; letter-spacing: .12em;
  color: var(--color-text-faint);
  margin-bottom: var(--space-5);
}

.case-h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: var(--weight-bold);
  letter-spacing: -0.03em;
  line-height: var(--leading-snug);
  margin-bottom: var(--space-6);
  max-width: 680px;
}

.case-body {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: var(--leading-normal);
  max-width: 620px;
  margin-bottom: var(--space-5);
}
.case-body--wide { max-width: 720px; }
.case-body strong { color: var(--color-text); }
.case-body em { font-style: italic; }

/* ── Two-column layout ──────────────────────────────────── */
.case-two-col {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-12);
  align-items: start;
  margin-top: var(--space-8);
}

/* ── Stat cards ─────────────────────────────────────────── */
.case-stat-stack { display: flex; flex-direction: column; gap: var(--space-4); }

.case-stat-card {
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  display: flex; flex-direction: column; gap: var(--space-2);
}

.case-stat-n {
  font-size: 2.5rem;
  font-weight: var(--weight-bold);
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--color-text);
}
.case-stat-l { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.4; }

/* ── Research methods grid ──────────────────────────────── */
.case-methods-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-10);
}

.case-method {
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
}

.case-method__num {
  display: block;
  font-size: 11px; font-weight: 600;
  letter-spacing: .08em; color: var(--color-text-faint);
  margin-bottom: var(--space-3);
}
.case-method__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-3);
}
.case-method__desc { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.6; }

/* ── Findings list ──────────────────────────────────────── */
.case-finding-list { display: flex; flex-direction: column; gap: 0; margin-top: var(--space-10); }

.case-finding {
  display: flex;
  gap: var(--space-6);
  padding: var(--space-7) 0;
  border-bottom: 1px solid var(--color-border);
  align-items: flex-start;
}
.case-finding:first-child { border-top: 1px solid var(--color-border); }

.case-finding__marker {
  font-size: var(--text-lg);
  color: var(--color-text-faint);
  flex-shrink: 0;
  padding-top: 2px;
  width: 24px;
}

.case-finding__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-2);
}
.case-finding__desc { font-size: var(--text-base); color: var(--color-text-muted); line-height: 1.6; max-width: 620px; }
.case-finding__desc strong { color: var(--color-text); }

/* ── Bar chart ──────────────────────────────────────────── */
.case-chart {
  margin-top: var(--space-12);
  padding: var(--space-8);
  background: var(--color-surface);
  border-radius: 8px;
  border: 1px solid var(--color-border);
  max-width: 560px;
}
.case-chart__label {
  font-size: 11px; font-weight: 600; letter-spacing: .08em;
  text-transform: uppercase; color: var(--color-text-faint);
  margin-bottom: var(--space-8);
}
.case-chart__bars {
  display: flex;
  align-items: flex-end;
  gap: var(--space-5);
  height: 200px;
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border);
}
.case-chart__bar-wrap { display: flex; flex-direction: column; align-items: center; gap: var(--space-2); flex: 1; }
.case-chart__bar {
  width: 100%;
  background: var(--color-text);
  border-radius: 4px 4px 0 0;
  display: flex; align-items: flex-start; justify-content: center;
  padding-top: var(--space-3);
  transition: opacity .3s ease;
}
.case-chart__bar:hover { opacity: .7; }
.case-chart__bar-val { font-size: var(--text-sm); font-weight: 700; color: var(--color-bg); }
.case-chart__bar-name { font-size: 11px; color: var(--color-text-faint); text-align: center; line-height: 1.3; }
.case-chart__caption { font-size: var(--text-sm); color: var(--color-text-muted); margin-top: var(--space-5); line-height: 1.6; }

/* ── Strategy grid ──────────────────────────────────────── */
.case-strategy-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  margin-top: var(--space-10);
}

.case-strategy-card {
  padding: var(--space-8);
  border: 1px solid var(--color-border);
  border-radius: 8px;
}

.case-strategy__title {
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
}
.case-strategy__desc { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.6; margin-bottom: var(--space-5); }
.case-strategy__list {
  display: flex; flex-direction: column; gap: var(--space-2);
  padding-left: 0; list-style: none;
}
.case-strategy__list li {
  font-size: var(--text-sm); color: var(--color-text-faint);
  padding-left: var(--space-4);
  position: relative;
}
.case-strategy__list li::before {
  content: '—';
  position: absolute; left: 0;
  color: var(--color-text-faint);
}

/* ── Design decisions ───────────────────────────────────── */
.case-decisions { display: flex; flex-direction: column; gap: 0; margin-top: var(--space-10); }

.case-decision {
  display: grid;
  grid-template-columns: 80px 1fr 80px 1fr;
  gap: var(--space-4) var(--space-6);
  padding: var(--space-7) 0;
  border-bottom: 1px solid var(--color-border);
  align-items: start;
}
.case-decision:first-child { border-top: 1px solid var(--color-border); }

.case-decision__before,
.case-decision__after {
  font-size: 10px; font-weight: 700;
  letter-spacing: .1em; text-transform: uppercase;
  padding-top: 3px;
}
.case-decision__before { color: var(--color-text-faint); }
.case-decision__after  { color: var(--color-text-muted); }

.case-decision__content h3 {
  font-size: var(--text-base); font-weight: var(--weight-medium);
  letter-spacing: -0.01em; margin-bottom: var(--space-2);
}
.case-decision__content p { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.6; }

/* ── Case image ─────────────────────────────────────────── */
.case-image {
  margin-top: var(--space-12);
  border-radius: 8px; overflow: hidden;
  background: var(--color-surface);
  max-width: 560px;
}
.case-image img { width: 100%; }

/* ── Lessons ────────────────────────────────────────────── */
.case-lessons {
  margin-top: var(--space-10);
  padding: var(--space-8);
  background: var(--color-surface);
  border-radius: 8px;
  border: 1px solid var(--color-border);
  max-width: 720px;
}
.case-lessons__title {
  font-size: var(--text-base); font-weight: var(--weight-bold);
  letter-spacing: -0.01em; margin-bottom: var(--space-4);
}

/* ── Case navigation ────────────────────────────────────── */
.case-nav-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--space-4);
  align-items: stretch;
}

.case-nav-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
  transition: border-color var(--duration-fast) ease, transform var(--duration-fast) ease;
}
.case-nav-card:hover { border-color: var(--color-text-muted); transform: translateY(-2px); }
.case-nav-card--center { justify-content: center; align-items: center; }
.case-nav-card--right { text-align: right; }

.case-nav-dir { font-size: 11px; text-transform: uppercase; letter-spacing: .1em; color: var(--color-text-faint); font-weight: 600; }
.case-nav-name { font-size: var(--text-sm); font-weight: var(--weight-medium); color: var(--color-text); line-height: 1.4; }

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 1023px) {
  .case-two-col { grid-template-columns: 1fr; }
  .case-strategy-grid { grid-template-columns: 1fr; }
  .case-methods-grid { grid-template-columns: 1fr; }
  .case-decision { grid-template-columns: 60px 1fr; }
  .case-decision__after { display: none; }
}

@media (max-width: 767px) {
  .case-cols-wide { grid-template-columns: minmax(0, 1fr); gap: var(--space-4); }
  .case-col-label { padding-top: 0; }
  .case-numbers { flex-direction: column; align-items: stretch; gap: var(--space-6); }
  .case-number-card { padding-inline: 0; }
  .case-number-divider { width: 100%; height: 1px; }
  .case-meta-row { gap: var(--space-5); }
  .case-nav-row { grid-template-columns: 1fr; }
  .case-nav-card--center { display: none; }
}

/* ── Decision list — spacious vertical format ─────────────── */
.case-decision-list {
  margin-top: var(--space-12);
  display: flex;
  flex-direction: column;
}

.case-decision-item {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-10);
  padding: var(--space-10) 0;
  border-top: 1px solid var(--color-border);
  align-items: start;
}

.case-decision-item:last-child {
  border-bottom: 1px solid var(--color-border);
}

.case-decision-item__q {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-faint);
  padding-top: 4px;
  letter-spacing: -0.01em;
}

.case-decision-item__a h3 {
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-3);
}

.case-decision-item__a p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: var(--leading-normal);
}

/* ── Two-column body text ─────────────────────────────────── */
.case-body-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  margin-top: var(--space-6);
}

/* ── Image grid (2 side by side) ──────────────────────────── */
.case-image-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}

.case-image-grid img {
  width: 100%;
  display: block;
  object-fit: cover;
}

/* ── Numbers strip — bigger font ──────────────────────────── */
.case-number {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: var(--weight-bold);
  letter-spacing: -0.05em;
  line-height: 1;
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 900px) {
  .case-decision-item { grid-template-columns: 1fr; gap: var(--space-4); }
  .case-body-cols { grid-template-columns: 1fr; }
  .case-image-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  [data-animate] { opacity: 1; transform: none; transition: none; }
}