/**
 * Project case study singles — aligned with projects grid (custom.css) + shared accent.
 */

.ps-page {
  --ps-accent: #5b7fa8;
  --ps-accent-mid: #6b8db8;
  --ps-accent-hover: #4a6fa5;
  --ps-ink: #1f2937;
  --ps-body: #374151;
  --ps-muted: #6b7280;
  --ps-faint: #9ca3af;
  --ps-line: #e5e7eb;
  --ps-surface: #f9fafb;
  --ps-chip: #f3f4f6;
  --ps-radius: 12px;
  --ps-radius-sm: 8px;
  --ps-max: 1120px;
  --ps-prose: 42rem;

  background: #fafafa;
  padding-bottom: 4rem;
}

.ps-container {
  max-width: var(--ps-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Top bar */
.ps-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 0 1.5rem;
  border-bottom: 1px solid var(--ps-line);
}

.ps-nav-back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--ps-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.ps-nav-back:hover {
  color: var(--ps-accent);
}

.ps-nav-back-icon {
  font-size: 1rem;
  opacity: 0.85;
}

.ps-nav-share #sharing.ananke-socials {
  margin-top: 0;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.ps-nav-share .ananke-social-link {
  opacity: 0.65;
  transition: opacity 0.2s ease;
}

.ps-nav-share .ananke-social-link:hover {
  opacity: 1;
}

/* Article shell */
.ps-article {
  padding-top: 2rem;
}

.ps-header {
  max-width: var(--ps-prose);
  margin-bottom: 2rem;
}

.ps-eyebrow {
  margin: 0 0 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ps-accent);
}

.ps-title {
  margin: 0 0 0.75rem;
  font-size: clamp(1.65rem, 2.8vw, 2.35rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.025em;
  color: var(--ps-ink);
}

.ps-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.875rem;
  color: var(--ps-faint);
  font-weight: 500;
}

.ps-meta-dot {
  user-select: none;
}

.ps-views {
  display: inline-flex;
  align-items: baseline;
  gap: 0.2rem;
}

.ps-view-count {
  font-variant-numeric: tabular-nums;
  color: var(--ps-muted);
}

.ps-view-label {
  font-weight: 400;
  color: var(--ps-faint);
}

.ps-lede {
  margin: 1.25rem 0 0;
  font-size: 1.125rem;
  line-height: 1.65;
  color: #4b5563;
  max-width: var(--ps-prose);
}

/* Two columns: prose + sticky related */
.ps-columns {
  display: grid;
  gap: 2.5rem;
  align-items: start;
}

@media (min-width: 1024px) {
  .ps-columns {
    grid-template-columns: minmax(0, 1fr) minmax(240px, 300px);
    gap: 3rem;
  }

  .ps-aside {
    position: sticky;
    top: 1.25rem;
  }
}

/* Body typography — readable, calm; complements sans title */
/* Inherit site body font (e.g. Avenir via Ananke) — same as Log singles */
.ps-body {
  font-size: 1.0625rem;
  line-height: 1.78;
  color: var(--ps-body);
  max-width: var(--ps-prose);
}

.ps-body > *:first-child {
  margin-top: 0;
}

.ps-body h1,
.ps-body h2,
.ps-body h3,
.ps-body h4 {
  margin-top: 2.25rem;
  margin-bottom: 0.75rem;
  font-weight: 600;
  color: var(--ps-ink);
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.ps-body h1 {
  font-size: 1.45rem;
}

.ps-body h2 {
  font-size: 1.3rem;
}

.ps-body h3 {
  font-size: 1.125rem;
}

.ps-body h4 {
  font-size: 1.05rem;
}

.ps-body p {
  margin: 0 0 1.2rem;
}

.ps-body a {
  color: var(--ps-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color 0.15s ease;
}

.ps-body a:hover {
  color: var(--ps-accent-hover);
}

.ps-body ul,
.ps-body ol {
  margin: 0 0 1.2rem;
  padding-left: 1.35rem;
}

.ps-body li {
  margin-bottom: 0.45rem;
}

.ps-body li::marker {
  color: var(--ps-faint);
}

.ps-body hr {
  margin: 2.25rem 0;
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--ps-line) 15%, var(--ps-line) 85%, transparent);
}

.ps-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--ps-radius-sm);
  border: 1px solid var(--ps-line);
  margin: 0.5rem 0 1.25rem;
}

.ps-body code {
  font-family: "Monaco", "Menlo", "Ubuntu Mono", monospace;
  font-size: 0.88em;
  background: var(--ps-chip);
  padding: 0.15rem 0.45rem;
  border-radius: 6px;
  border: 1px solid var(--ps-line);
  color: #1f2937;
}

.ps-body pre {
  margin: 0 0 1.25rem;
  padding: 1.1rem 1.2rem;
  border-radius: var(--ps-radius-sm);
  background: #1f2937;
  color: #f3f4f6;
  overflow-x: auto;
  font-size: 0.875rem;
  line-height: 1.55;
  border: 1px solid #111827;
}

.ps-body pre code {
  background: none;
  border: none;
  padding: 0;
  color: inherit;
}

.ps-body blockquote {
  margin: 1.25rem 0;
  padding: 0.25rem 0 0.25rem 1.1rem;
  border-left: 3px solid var(--ps-accent);
  color: var(--ps-muted);
  font-style: italic;
}

.ps-body strong {
  color: var(--ps-ink);
  font-weight: 600;
}

/* Tags — match project-card chips */
.ps-tags-wrap {
  margin-top: 2.75rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--ps-line);
}

.ps-tags-label {
  display: block;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ps-faint);
  margin-bottom: 0.75rem;
}

.ps-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.ps-tag {
  display: inline-block;
  padding: 0.375rem 0.75rem;
  background: var(--ps-chip);
  color: #4b5563;
  border: 1px solid var(--ps-line);
  border-radius: 6px;
  font-size: 0.8125rem;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.ps-tag:hover {
  background: #e5e7eb;
  border-color: #d1d5db;
  color: var(--ps-ink);
}

/* CTA — match .read-more on grid */
.ps-end {
  margin-top: 2.5rem;
}

.ps-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.35rem;
  background: var(--ps-accent);
  color: #fff !important;
  text-decoration: none !important;
  border-radius: 6px;
  font-weight: 500;
  font-size: 0.9375rem;
  transition: background 0.2s ease, transform 0.2s ease;
  box-shadow: 0 1px 2px rgba(91, 127, 168, 0.35);
}

.ps-btn:hover {
  background: var(--ps-accent-hover);
  transform: translateX(2px);
}

.ps-btn-arrow {
  transition: transform 0.2s ease;
  font-size: 1rem;
}

.ps-btn:hover .ps-btn-arrow {
  transform: translateX(3px);
}

/* Related card — subtle accent bar like shared .section-title */
.ps-related-card {
  background: #fff;
  border: 1px solid var(--ps-line);
  border-radius: var(--ps-radius);
  padding: 1.35rem 1.25rem 1.25rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  position: relative;
}

.ps-related-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 1.25rem;
  right: 1.25rem;
  height: 3px;
  border-radius: 0 0 2px 2px;
  background: linear-gradient(90deg, var(--ps-accent) 0%, var(--ps-accent-mid) 100%);
}

.ps-related-title {
  margin: 0.35rem 0 1rem;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ps-muted);
}

.ps-related-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.ps-related-list li {
  margin-bottom: 0.55rem;
  line-height: 1.35;
}

.ps-related-list a {
  font-size: 0.9rem;
  color: var(--ps-ink);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.15s ease;
}

.ps-related-list a:hover {
  color: var(--ps-accent);
}

.ps-related-empty {
  margin: 0;
  font-size: 0.875rem;
  color: var(--ps-muted);
  line-height: 1.5;
}

.ps-related-all {
  display: inline-block;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--ps-line);
  width: 100%;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--ps-accent);
  text-decoration: none;
}

.ps-related-all:hover {
  color: var(--ps-accent-hover);
}

@media (max-width: 640px) {
  .ps-container {
    padding: 0 1rem;
  }

  .ps-page {
    padding-bottom: 3rem;
  }

  .ps-nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .ps-title {
    font-size: 1.5rem;
  }

  .ps-lede {
    font-size: 1.05rem;
  }

  .ps-body {
    font-size: 1rem;
  }
}