/* ============================================================
   CASE STUDY — Editorial layout (System B: cream / navy / forest)
   Pairs with bd-* primitives in components.css
   ============================================================ */

/* Visually-hidden helper for screen-reader-only headings */
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0);
  white-space: nowrap; border: 0;
}

/* ---------- Section primitives ---------- */
.case-section { padding: var(--space-xl) 0; }
.case-section-alt { background: var(--surface-alt); }

/* Section 7 — pull quote */
.case-section--quote {
  background: var(--accent-soft);
  border-top: 1px solid color-mix(in srgb, var(--accent) 18%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 18%, transparent);
}
.case-pullquote {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.4rem, 2.4vw, 2rem);
  line-height: 1.45;
  color: var(--text);
  border-left: 3px solid var(--accent);
  padding: 0.4rem 0 0.4rem 2rem;
  margin: 0;
}
.case-pullquote-cite {
  display: block;
  margin-top: 1.2rem;
  font-family: var(--font-body);
  font-style: normal;
  font-size: var(--type-small);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text-muted);
}

.case-h2 {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: var(--type-display);
  line-height: var(--leading-tight);
  letter-spacing: -0.02em;
  color: var(--text);
  margin: 0 0 1.5rem;
  max-width: 22ch;
}
.case-h3 {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: var(--type-h3);
  line-height: 1.2;
  color: var(--text);
  margin: 2.75rem 0 1rem;
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  flex-wrap: wrap;
}
.case-h3-flush { margin-top: 3rem; }
.case-h3-num {
  font-family: var(--font-body);
  font-style: normal;
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}
.case-h3-sub {
  font-family: var(--font-body);
  color: var(--text-muted);
  font-size: 0.96rem;
  margin: -0.5rem 0 1.5rem;
  max-width: 60ch;
}

.case-prose p,
.case-results-prose p {
  font-family: var(--font-body);
  font-size: var(--type-body);
  line-height: var(--leading-normal);
  color: var(--text-soft);
  margin: 0 0 1.25rem;
  max-width: 62ch;
}
.case-prose p:last-child,
.case-results-prose p:last-child { margin-bottom: 0; }
.case-prose code,
.case-tech-item code,
.case-section code {
  font-family: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  font-size: 0.88em;
  background: var(--blue-soft);
  color: var(--blue);
  padding: 0.1em 0.4em;
  border-radius: 4px;
}

/* ============================================================
   1. HERO
   ============================================================ */
.case-hero {
  position: relative;
  padding: clamp(4rem, 7vw, 7rem) 0 clamp(3rem, 5vw, 5rem);
  background:
    radial-gradient(ellipse 80% 60% at 100% 0%, rgba(var(--accent-rgb), 0.07), transparent 60%),
    linear-gradient(180deg, var(--surface-alt) 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.case-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: clamp(2rem, 4vw, 4rem);
  align-items: center;
}
.case-hero-title {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: var(--type-display);
  line-height: 1.02;
  letter-spacing: -0.025em;
  color: var(--text);
  margin: 0 0 1.4rem;
  max-width: 18ch;
}
.case-hero-sub {
  font-family: var(--font-body);
  font-size: 1.08rem;
  line-height: 1.65;
  color: var(--text-soft);
  max-width: 50ch;
  margin: 0 0 1.75rem;
}
.case-hero-sub strong {
  color: var(--accent);
  font-weight: 700;
}
.case-hero-meta {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem 1.5rem;
  border-top: 1px solid var(--line);
  padding-top: 1.5rem;
  max-width: 32rem;
}
.case-hero-meta li {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}
.case-meta-label {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.case-meta-val {
  font-family: var(--font-body);
  font-size: 0.96rem;
  font-weight: 600;
  color: var(--text);
}
.case-hero-shot {
  margin: 0;
  position: relative;
}
.case-hero-shot img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-md);
}

/* ============================================================
   2. STAT STRIP
   ============================================================ */
.case-stats {
  padding: clamp(2.5rem, 4vw, 4rem) 0;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}
.case-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(1.25rem, 2.5vw, 2.5rem);
}
.case-stat .bd-stat-value {
  display: inline-flex;
  align-items: baseline;
  gap: 0.1em;
}
.case-stat .bd-stat-value small {
  font-size: 0.45em;
  color: var(--text-muted);
  font-weight: 400;
  margin-left: 0.05em;
}
.case-stat .bd-stat-label em {
  font-style: italic;
  color: var(--text-muted);
  font-weight: 400;
  letter-spacing: 0.04em;
  text-transform: none;
  display: block;
  margin-top: 0.2rem;
  font-size: 0.78rem;
}

/* "Data pending" visual marker — soft, not loud */
.data-pending .bd-stat-value {
  color: var(--text-muted);
  opacity: 0.9;
}
.data-pending::before {
  content: "PENDING";
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--warning);
  background: rgba(181, 115, 59, 0.12);
  padding: 0.2rem 0.55rem;
  border-radius: 3px;
  margin-bottom: 0.55rem;
  align-self: flex-start;
}

/* ============================================================
   5. APPROACH BLOCKS
   ============================================================ */
.case-approach-block {
  padding: 2.5rem 0;
  border-top: 1px solid var(--line);
}
.case-approach-block:first-of-type {
  border-top: 1px solid var(--line);
  margin-top: 1rem;
}
.case-approach-block p {
  font-family: var(--font-body);
  font-size: var(--type-body);
  line-height: var(--leading-normal);
  color: var(--text-soft);
  max-width: 62ch;
}
.case-approach-block p strong {
  color: var(--text);
  font-weight: 700;
}

.case-figure {
  margin: 1.75rem 0 0;
}
.case-figure-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
}
.case-shot {
  position: relative;
  margin: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.case-shot:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.case-shot--single { max-width: 880px; margin-inline: auto; }
.case-shot img {
  display: block;
  width: 100%;
  height: auto;
}
.case-shot-tag {
  position: absolute;
  top: 0.7rem; left: 0.7rem;
  font-family: var(--font-body);
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 0.32rem 0.7rem;
  border-radius: 999px;
  z-index: 1;
  backdrop-filter: blur(8px);
}
.case-shot-tag--before {
  background: rgba(181, 115, 59, 0.92);
  color: #fff;
}
.case-shot-tag--after {
  background: rgba(42, 74, 63, 0.94);
  color: var(--bg);
}

/* ============================================================
   6. RESULTS
   ============================================================ */
.case-results-prose {
  margin: 0 auto 2.5rem;
}
.case-results-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 0 auto 3rem;
}
.case-result-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.5rem 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}
.case-result-label {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.case-result-row {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  line-height: 1;
}
.case-result-before {
  font-size: 1.85rem;
  color: var(--warning);
  opacity: 0.85;
}
.case-result-arrow {
  font-family: var(--font-body);
  font-style: normal;
  font-size: 1rem;
  color: var(--text-muted);
}
.case-result-after {
  font-size: 2.4rem;
  color: var(--accent);
}
.case-result-before small,
.case-result-after small {
  font-size: 0.45em;
  font-style: italic;
  color: var(--text-muted);
  margin-left: 0.1em;
  font-weight: 400;
}

/* Ranking table */
.case-rank-table-wrap {
  margin: 0 auto 2.5rem;
  max-width: 920px;
}
.case-rank-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  font-family: var(--font-body);
  font-size: 0.95rem;
}
.case-rank-table th,
.case-rank-table td {
  text-align: left;
  padding: 0.95rem 1.15rem;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}
.case-rank-table th {
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: var(--surface-alt);
}
.case-rank-table tbody tr:last-child td { border-bottom: 0; }
.case-rank-table td:first-child { color: var(--text); font-weight: 500; }
.case-rank-table td.data-pending {
  color: var(--text-muted);
  font-style: italic;
  font-size: 0.85rem;
}
.case-rank-table td.data-pending::before { content: ""; display: none; }
.case-rank-note {
  margin: 0.85rem 0 0;
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--text-muted);
  font-style: italic;
}

.case-traffic-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
  max-width: 920px;
  margin: 0 auto;
}

/* ============================================================
   8. TECH GRID
   ============================================================ */
.case-tech-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem 2rem;
  margin: 0;
}
.case-tech-item {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.25rem 1.4rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}
.case-tech-item dt {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0;
}
.case-tech-item dd {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.96rem;
  line-height: 1.6;
  color: var(--text-soft);
}
.case-tech-item dd strong {
  color: var(--text);
  font-weight: 700;
}

/* ============================================================
   9. GALLERY
   ============================================================ */
.case-gallery-note {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text-muted);
  margin: 0 0 2rem;
  max-width: 60ch;
}
.case-gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}
.case-gallery-item {
  position: relative;
  margin: 0;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--surface);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.case-gallery-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.case-gallery-item > img {
  display: block;
  width: 100%;
  height: auto;
}
.case-gallery-item .case-shot-tag {
  position: absolute;
  top: 0.85rem; left: 0.85rem;
}
.case-gallery-item .bd-image-caption {
  padding: 0.85rem 1rem 1rem;
  margin: 0;
}

/* ============================================================
   10. CTA
   ============================================================ */
.case-cta {
  background:
    radial-gradient(ellipse 70% 80% at 100% 0%, rgba(var(--accent-rgb), 0.08), transparent 65%),
    var(--blue);
  color: var(--bg);
  text-align: center;
}
.case-cta-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
}
.case-cta .bd-eyebrow { color: var(--accent-soft); }
.case-cta-h2 {
  color: var(--bg);
  max-width: none;
}
.case-cta-sub {
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.6;
  color: rgba(245, 241, 234, 0.78);
  max-width: 50ch;
  margin: 0 0 2rem;
}
.case-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  justify-content: center;
}
.case-cta .bd-btn-secondary {
  color: var(--bg);
  border-color: rgba(245, 241, 234, 0.4);
}
.case-cta .bd-btn-secondary:hover {
  background: var(--bg);
  color: var(--blue);
  border-color: var(--bg);
}

/* ============================================================
   11. DISCLOSURE
   ============================================================ */
.case-disclosure {
  padding: 1.75rem 0;
  background: var(--surface-alt);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.case-disclosure p {
  margin: 0;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 0.84rem;
  line-height: 1.55;
  color: var(--text-muted);
  text-align: center;
  max-width: 70ch;
  margin-inline: auto;
}

/* ============================================================
   12. SHARE BUTTONS
   ============================================================ */
.case-share {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem;
  width: min(100% - 2rem, var(--container));
  margin: 0 auto;
  padding: 1.25rem 0;
}
.case-share-top {
  border-bottom: 1px solid var(--line);
  padding-top: 1.5rem;
  padding-bottom: 1rem;
}
.case-share-bottom {
  padding-top: 2rem;
  padding-bottom: 3rem;
  justify-content: center;
}
.case-share-label {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-right: 0.4rem;
}
.case-share-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1rem;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
  box-shadow: none;
  min-height: 0;
}
.case-share-btn:hover {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
  transform: translateY(-1px);
}
.case-share-btn[data-share="facebook"]:hover {
  background: #1877F2;
  border-color: #1877F2;
  color: #fff;
}
.case-share-btn svg { flex-shrink: 0; }
.case-share-copy-done { display: none; }
.case-share-btn[data-copied="true"] .case-share-copy-default { display: none; }
.case-share-btn[data-copied="true"] .case-share-copy-done {
  display: inline;
  color: var(--success);
}
.case-share-btn[data-copied="true"] {
  background: var(--accent-soft);
  color: var(--success);
  border-color: var(--success);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 980px) {
  .case-hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .case-hero-shot { order: -1; }
  .case-stats-grid { grid-template-columns: repeat(2, 1fr); }
  .case-results-grid { grid-template-columns: repeat(2, 1fr); }
  .case-traffic-grid { grid-template-columns: repeat(1, 1fr); }
  .case-tech-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .case-figure-pair { grid-template-columns: 1fr; }
  .case-gallery-grid { grid-template-columns: 1fr; }
  .case-results-grid { grid-template-columns: 1fr; }
  .case-stats-grid { grid-template-columns: 1fr 1fr; }
  .case-hero-meta { grid-template-columns: 1fr 1fr; }
  .case-h3 { gap: 0.6rem; }
  .case-h3-num { font-size: 0.7rem; padding: 0.25rem 0.5rem; }
  .case-rank-table th,
  .case-rank-table td { padding: 0.7rem 0.85rem; font-size: 0.85rem; }
  .case-rank-table th:nth-child(3),
  .case-rank-table td:nth-child(3) { display: none; }
  .case-share-bottom { padding-bottom: 2.25rem; }
}

@media (max-width: 480px) {
  .case-stats-grid { grid-template-columns: 1fr; }
  .case-result-row { flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  .case-shot, .case-gallery-item, .case-share-btn, .case-cta .bd-btn-primary {
    transition: none;
  }
  .case-shot:hover, .case-gallery-item:hover, .case-share-btn:hover {
    transform: none;
  }
}