/* case-studies.css — styles for /case-studies and /portfolio narrative page */

/* PAGE HEADER */
.cs-page-header {
  border-bottom: 1px solid var(--border);
  padding: 4rem 2rem 3rem;
}
.cs-page-inner {
  max-width: 860px;
  margin: 0 auto;
}
.cs-breadcrumb { margin-bottom: 1.5rem; }
.breadcrumb-link {
  font-size: 0.875rem;
  color: var(--fg-muted);
  text-decoration: none;
  transition: color 0.15s;
}
.breadcrumb-link:hover { color: var(--fg); }

.cs-eyebrow { margin-bottom: 1.25rem; }
.cs-page-title {
  font-family: var(--font-head);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--fg);
  margin-bottom: 1.25rem;
}
.cs-page-lede {
  font-size: 1.1rem;
  color: var(--fg-muted);
  line-height: 1.75;
  max-width: 640px;
}

/* CASE STUDY CARD */
.cs-list {
  max-width: 860px;
  margin: 0 auto;
  padding: 3rem 2rem 4rem;
}

.cs-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  margin-bottom: 3rem;
}

.cs-card-header {
  padding: 2rem 2.5rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.cs-card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}
.cs-tag {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.3rem 0.7rem;
  border-radius: 100px;
  border: 1px solid rgba(0,212,255,0.25);
  color: var(--accent);
  background: rgba(0,212,255,0.06);
}
.cs-tag.amber {
  border-color: rgba(245,158,11,0.3);
  color: var(--accent-amber);
  background: rgba(245,158,11,0.06);
}
.cs-card-title {
  font-family: var(--font-head);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 0.6rem;
}
.cs-card-sub {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.65;
  max-width: 520px;
}
.cs-report-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-head);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  border: 1px solid rgba(0,212,255,0.3);
  background: rgba(0,212,255,0.07);
  padding: 0.6rem 1.1rem;
  border-radius: 8px;
  white-space: nowrap;
  transition: background 0.2s, border-color 0.2s;
  flex-shrink: 0;
}
.cs-report-link:hover { background: rgba(0,212,255,0.14); border-color: rgba(0,212,255,0.5); }
.cs-report-link svg { flex-shrink: 0; }

/* STATS ROW */
.cs-stats {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
}
.cs-stat {
  flex: 1;
  padding: 1.25rem 1.5rem;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}
.cs-stat:last-child { border-right: none; }
.cs-stat-value {
  font-family: var(--font-head);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}
.cs-stat-value.pass { color: #22c55e; }
.cs-stat-label {
  font-size: 0.72rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

/* BODY SECTIONS */
.cs-body {
  padding: 2rem 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.cs-section-title {
  font-family: var(--font-head);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.cs-section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* SCENARIO */
.cs-scenario-text {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.75;
}
.cs-scenario-text strong { color: var(--fg); }

/* CRITICAL PATHS TABLE */
.cs-paths-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
.cs-paths-table th {
  text-align: left;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg-muted);
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border);
}
.cs-paths-table td {
  padding: 0.7rem 0.75rem;
  color: var(--fg-muted);
  border-bottom: 1px solid rgba(255,255,255,0.04);
  vertical-align: top;
  line-height: 1.5;
}
.cs-paths-table tr:last-child td { border-bottom: none; }
.cs-paths-table .path-name {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.8rem;
  color: var(--fg);
  white-space: nowrap;
}
.cs-paths-table .path-why { font-size: 0.82rem; }

/* FAILURE MODES */
.cs-failure-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.cs-failure-item {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  padding: 0.9rem 1rem;
  background: rgba(239,68,68,0.04);
  border: 1px solid rgba(239,68,68,0.12);
  border-radius: 8px;
}
.cs-failure-icon {
  font-size: 0.85rem;
  margin-top: 0.05rem;
  flex-shrink: 0;
}
.cs-failure-text { font-size: 0.875rem; color: var(--fg-muted); line-height: 1.6; }
.cs-failure-text strong { color: var(--fg); }

/* DELIVERY RECEIPT CALLOUT */
.cs-receipt-callout {
  background: rgba(0,212,255,0.04);
  border: 1px solid rgba(0,212,255,0.18);
  border-radius: 10px;
  padding: 1.5rem;
}
.cs-receipt-callout-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1rem;
}
.cs-receipt-callout-title {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 600;
  color: var(--fg);
}
.cs-receipt-items {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.cs-receipt-item {
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  font-size: 0.875rem;
  color: var(--fg-muted);
  line-height: 1.55;
}
.cs-receipt-item-check { color: #22c55e; flex-shrink: 0; font-weight: 600; }
.cs-receipt-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.8rem;
  margin-left: 0.4rem;
}
.cs-receipt-link:hover { text-decoration: underline; }

/* CTA */
.cs-cta {
  text-align: center;
  padding: 4rem 2rem;
  border-top: 1px solid var(--border);
  background: var(--bg-2);
}
.cs-cta-title {
  font-family: var(--font-head);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--fg);
  margin-bottom: 1rem;
}
.cs-cta-sub {
  font-size: 1rem;
  color: var(--fg-muted);
  max-width: 480px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}
.cs-cta-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}
.cs-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--bg);
  background: var(--accent);
  padding: 0.7rem 1.5rem;
  border-radius: 8px;
  text-decoration: none;
  transition: opacity 0.2s;
}
.cs-cta-btn:hover { opacity: 0.85; }
.cs-cta-btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--fg-muted);
  background: transparent;
  border: 1px solid var(--border);
  padding: 0.7rem 1.5rem;
  border-radius: 8px;
  text-decoration: none;
  transition: border-color 0.2s, color 0.2s;
}
.cs-cta-btn-outline:hover { border-color: var(--fg-muted); color: var(--fg); }

/* RESPONSIVE */
@media (max-width: 640px) {
  .cs-page-header { padding: 3rem 1.5rem 2rem; }
  .cs-list { padding: 2rem 1.25rem 3rem; }
  .cs-card-header { padding: 1.5rem 1.5rem 1.25rem; flex-direction: column; }
  .cs-body { padding: 1.5rem 1.5rem; }
  .cs-stats { flex-wrap: wrap; }
  .cs-stat { min-width: 45%; }
  .cs-paths-table { display: block; overflow-x: auto; }
}