/* ============================================================
   AGR Robotics — pages/cases.css
   Case Studies overview + 4 individual cases
   ============================================================ */

/* --- Cases Overview Hero ----------------------------------- */
.cases-hero {
  padding: 130px 0 80px;
  position: relative;
  overflow: hidden;
}
.cases-hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 50% 60% at 60% 40%, rgba(200,168,75,0.05) 0%, transparent 70%),
    linear-gradient(180deg, var(--bg-primary) 0%, #0A0F14 100%);
}
.cases-hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 48px;
  position: relative;
  z-index: 1;
}
.cases-hero h1 {
  font-size: clamp(50px, 6.5vw, 84px);
  max-width: 700px;
  margin-bottom: 28px;
}
.cases-hero h1 em { color: var(--accent); font-style: normal; }

/* Cases grid on overview */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 56px;
}
.case-card {
  display: block;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s, transform 0.2s;
  text-decoration: none;
}
.case-card:hover {
  border-color: var(--border);
  transform: translateY(-3px);
}
.case-card-image {
  aspect-ratio: 16/9;
  background: var(--bg-tertiary);
  overflow: hidden;
  position: relative;
}
.case-card-image img { width: 100%; height: 100%; object-fit: cover; }
.case-card-image-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-align: center;
  padding: 20px;
  line-height: 1.6;
}
.case-card-body { padding: 28px 32px; }
.case-card-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--accent);
  margin-bottom: 10px;
}
.case-card-title {
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 700;
  font-size: 22px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.1;
}
.case-card-summary {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 18px;
}
.case-card-metrics {
  display: flex;
  gap: 20px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.case-metric {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.case-metric-val {
  font-family: 'JetBrains Mono', monospace;
  font-size: 16px;
  font-weight: 500;
  color: var(--accent);
}
.case-metric-label {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.case-card-link {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 7px;
  transition: gap 0.2s;
}
.case-card:hover .case-card-link { gap: 12px; }

/* How to read a case */
.case-read-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: 48px;
}
.case-read-item {
  padding: 32px 28px;
  border-right: 1px solid var(--border-subtle);
}
.case-read-item:last-child { border-right: none; }
.case-read-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--accent);
  margin-bottom: 12px;
}
.case-read-q {
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 700;
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: 10px;
}
.case-read-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* --- Individual Case Page ---------------------------------- */
.case-page-hero {
  padding: 110px 0 72px;
  position: relative;
  overflow: hidden;
}
.case-page-hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 40% 50% at 70% 40%, rgba(200,168,75,0.05) 0%, transparent 70%),
              linear-gradient(180deg, var(--bg-primary) 0%, #0A0F14 100%);
}
.case-page-hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: start;
  position: relative;
  z-index: 1;
}
.case-page-hero h1 {
  font-size: clamp(46px, 5.8vw, 72px);
  margin-bottom: 28px;
}
.case-page-hero h1 em { color: var(--accent); font-style: normal; display: block; }

/* Case metrics bar */
.case-results-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: 48px;
}
.case-result-cell {
  padding: 22px 20px;
  border-right: 1px solid var(--border-subtle);
  background: var(--bg-secondary);
}
.case-result-cell:last-child { border-right: none; }
.case-result-val {
  font-family: 'JetBrains Mono', monospace;
  font-size: 20px;
  font-weight: 500;
  color: var(--accent);
  display: block;
  margin-bottom: 6px;
}
.case-result-label {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* Evidence structure */
.evidence-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: 48px;
}
.evidence-col {
  padding: 40px;
  border-right: 1px solid var(--border-subtle);
}
.evidence-col:last-child { border-right: none; }
.evidence-col-head {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-subtle);
}
.evidence-col-head.risk  { color: var(--text-muted); }
.evidence-col-head.logic { color: var(--accent); }

/* --- Responsive -------------------------------------------- */
@media (max-width: 1024px) {
  .cases-grid { grid-template-columns: 1fr; }
  .case-read-grid { grid-template-columns: 1fr 1fr; }
  .case-read-item:nth-child(2) { border-right: none; }
  .case-read-item:nth-child(3) { border-top: 1px solid var(--border-subtle); }
  .case-read-item:nth-child(4) { border-right: none; border-top: 1px solid var(--border-subtle); }
  .case-page-hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .case-results-bar { grid-template-columns: 1fr 1fr; }
  .case-result-cell:nth-child(2) { border-right: none; }
  .case-result-cell:nth-child(3) { border-top: 1px solid var(--border-subtle); }
  .case-result-cell:nth-child(4) { border-right: none; border-top: 1px solid var(--border-subtle); }
  .evidence-grid { grid-template-columns: 1fr; }
  .evidence-col { border-right: none; border-bottom: 1px solid var(--border-subtle); }
  .evidence-col:last-child { border-bottom: none; }
}
@media (max-width: 768px) {
  .cases-hero-inner { padding: 0 20px; }
  .case-page-hero-inner { padding: 0 20px; padding-bottom: 48px; }
  .case-read-grid { grid-template-columns: 1fr; }
  .case-read-item { border-right: none; border-bottom: 1px solid var(--border-subtle); }
  .case-read-item:last-child { border-bottom: none; }
}