/* ─────────────────────────────────────────────
   project-detail.css
   Single template, accent-driven via --accent-project
───────────────────────────────────────────── */

:root {
  --accent-project: var(--color-blue);
}

.project-detail-body {
  background: var(--color-canvas);
  min-height: 100vh;
}

/* HERO */
.project-hero {
  padding: calc(var(--nav-height) + var(--space-4xl)) 0 var(--space-2xl);
  border-bottom: 1px solid var(--color-border);
}
.project-hero__back {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  text-decoration: none;
  margin-bottom: var(--space-lg);
  transition: color var(--duration-fast);
}
.project-hero__back:hover { color: var(--accent-project); }
.project-hero__category {
  display: inline-block;
  padding: 0.35rem 1rem;
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--accent-project) 14%, transparent);
  color: var(--accent-project);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}
.project-hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2.25rem, 6vw, 4.25rem);
  line-height: 1.05;
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
  max-width: 22ch;
}
.project-hero__tagline {
  font-size: clamp(1.0625rem, 1.4vw, 1.25rem);
  line-height: 1.55;
  color: var(--color-text-body);
  margin-bottom: var(--space-xl);
  max-width: 60ch;
}
.project-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
}
.project-hero__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}
.project-hero__links .btn--primary {
  background: var(--accent-project);
  border-color: var(--accent-project);
}
.project-hero__links .btn--primary:hover {
  filter: brightness(0.92);
}
.project-hero__github-stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-text-muted);
}
.gh-stat { padding: 0.25rem 0.75rem; border: 1px solid var(--color-border); border-radius: var(--radius-pill); }

/* METRICS */
.project-metrics {
  padding: var(--space-2xl) 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}
.project-metrics__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}
@media (min-width: 768px) { .project-metrics__grid { grid-template-columns: repeat(4, 1fr); } }

.metric-card {
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  background: var(--color-canvas);
  border: 1px solid var(--color-border);
  text-align: left;
  transition: border-color var(--duration-fast), transform var(--duration-fast);
}
.metric-card:hover {
  border-color: var(--accent-project);
  transform: translateY(-2px);
}
.metric-card__value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.5rem, 2.5vw, 2.125rem);
  line-height: 1.05;
  color: var(--accent-project);
  margin-bottom: 0.35rem;
}
.metric-card__label {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  line-height: 1.35;
}

/* STACK */
.project-stack {
  padding: var(--space-2xl) 0;
  border-bottom: 1px dashed var(--color-border);
}
.project-section__head {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  color: var(--color-text-primary);
  margin-bottom: var(--space-lg);
  position: relative;
  padding-left: var(--space-md);
}
.project-section__head::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.4em;
  height: 0.7em;
  width: 4px;
  background: var(--accent-project);
  border-radius: var(--radius-pill);
}
.project-stack__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs) var(--space-sm);
}
.stack-tag {
  display: inline-block;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--color-text-body);
  transition: border-color var(--duration-fast), color var(--duration-fast);
}
.stack-tag:hover {
  border-color: var(--accent-project);
  color: var(--accent-project);
}

/* DYNAMIC SECTIONS */
.project-sections {
  padding: var(--space-2xl) 0;
}
.project-section + .project-section { margin-top: var(--space-3xl); }
.project-section__title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 2.6vw, 2.25rem);
  line-height: 1.15;
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
  display: inline-block;
  border-bottom: 2px solid var(--accent-project);
  padding-bottom: 0.25rem;
}
.project-section__body p {
  font-size: var(--text-body-l, 1.0625rem);
  line-height: 1.7;
  color: var(--color-text-body);
  margin-bottom: var(--space-md);
  max-width: 70ch;
}
.project-section__body p:last-child { margin-bottom: 0; }

/* FINDINGS */
.findings-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin-top: var(--space-md);
}
@media (min-width: 768px) {
  .findings-grid { grid-template-columns: repeat(2, 1fr); }
}

.finding-card {
  position: relative;
  padding: var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--accent-project);
  border-radius: var(--radius-md);
  transition: transform var(--duration-fast), box-shadow var(--duration-fast);
}
.finding-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.finding-card__num {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
}
.finding-card__title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  line-height: 1.2;
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
  padding-right: 2.5rem;
}
.finding-card__desc {
  color: var(--color-text-body);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* RELATED */
.project-related {
  padding: var(--space-3xl) 0 var(--space-2xl);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}
.project-related__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}
@media (min-width: 768px) { .project-related__grid { grid-template-columns: repeat(3, 1fr); } }

.related-card {
  --accent-related: var(--accent-project);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-lg);
  background: var(--color-canvas);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  border-top: 3px solid var(--accent-related);
  transition: transform var(--duration-fast), box-shadow var(--duration-fast);
}
.related-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.related-card__category {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-related);
  font-weight: 600;
}
.related-card__title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  line-height: 1.2;
  color: var(--color-text-primary);
}
.related-card__tagline {
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--color-text-body);
  flex: 1;
}
.related-card__cta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-related);
  font-weight: 600;
  margin-top: auto;
}

/* BACK CTA */
.project-back-cta {
  padding: var(--space-2xl) 0 var(--space-3xl);
  text-align: center;
  background: var(--color-surface);
}

/* 404 */
.project-404 {
  padding: calc(var(--nav-height) + var(--space-5xl)) 0 var(--space-4xl);
  text-align: center;
}
.project-404__num {
  font-family: var(--font-serif);
  font-size: clamp(5rem, 16vw, 11rem);
  line-height: 1;
  color: var(--color-text-muted);
  opacity: 0.3;
  margin-bottom: var(--space-md);
}
.project-404__title {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
}
.project-404__msg {
  font-size: 1rem;
  color: var(--color-text-body);
  max-width: 36rem;
  margin: 0 auto var(--space-xl);
  line-height: 1.6;
}

/* Detail page: nav always visible (no scroll-reveal logic runs here) */
.project-detail-body .site-header,
.project-detail-body #main-nav {
  opacity: 1 !important;
  pointer-events: auto !important;
  visibility: visible !important;
  transform: none !important;
}
.project-detail-body .nav-logo { opacity: 1 !important; }
.project-detail-body .nav-logo.is-hidden { opacity: 1 !important; }

/* Footer extra spacing on detail page */
.project-detail-body .site-footer { margin-top: 0; }

/* Hide loading screen if it exists */
.project-detail-body #loading-screen { display: none !important; }
.project-detail-body #marquee { display: none; }


/* Stack tag category colour hints (subtle) */
.stack-tag--lang { background: color-mix(in srgb, var(--accent-project) 8%, var(--color-surface)); }
.stack-tag--data { background: var(--color-surface); }
.stack-tag--ml,
.stack-tag--ai,
.stack-tag--nlp { background: color-mix(in srgb, var(--color-coral) 8%, var(--color-surface)); }
.stack-tag--cloud,
.stack-tag--arch { background: color-mix(in srgb, var(--color-teal) 10%, var(--color-surface)); }
.stack-tag--viz { background: color-mix(in srgb, var(--accent-project) 10%, var(--color-surface)); }

/* Responsive */
@media (max-width: 640px) {
  .project-hero { padding-top: calc(var(--nav-height) + var(--space-3xl)); }
  .project-hero__title { font-size: 2.25rem; }
  .project-hero__meta { flex-direction: column; align-items: flex-start; }
}

/* ─────────────────────────────────────────────
   PROJECT DETAIL — v2 new section renderers
───────────────────────────────────────────── */

/* ─── Process timeline (new section type) ─── */
.process-timeline {
  list-style: none;
  padding: 0;
  margin: var(--space-md) 0;
  position: relative;
}
.process-timeline::before {
  content: "";
  position: absolute;
  left: 1.375rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}
.process-timeline__step {
  display: flex;
  gap: var(--space-lg);
  padding-bottom: var(--space-xl);
  position: relative;
}
.process-timeline__step:last-child { padding-bottom: 0; }
.process-timeline__num {
  flex-shrink: 0;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  background: var(--accent-project);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.875rem;
  z-index: 1;
  box-shadow: 0 0 0 4px var(--color-canvas);
}
.process-timeline__body { padding-top: 0.5rem; }
.process-timeline__title {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}
.process-timeline__detail {
  font-size: 0.9375rem;
  color: var(--color-text-body);
  line-height: 1.6;
}

/* ─── Recommendations grid (new section type) ─── */
.recs-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin-top: var(--space-md);
}
@media (min-width: 640px) { .recs-grid { grid-template-columns: repeat(2, 1fr); } }
.rec-card {
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  transition: transform var(--duration-fast), box-shadow var(--duration-fast);
}
.rec-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.rec-card__priority {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}
.rec-card--high .rec-card__priority { background: var(--color-coral-tint); color: var(--color-coral); }
.rec-card--med  .rec-card__priority { background: var(--color-blue-tint);  color: var(--color-blue); }
.rec-card--low  .rec-card__priority { background: var(--color-surface-alt); color: var(--color-text-muted); }
.rec-card__title {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
  line-height: 1.4;
}
.rec-card__detail {
  font-size: 0.875rem;
  color: var(--color-text-body);
  line-height: 1.55;
}