.page-header {
  padding-top: 120px;
  padding-bottom: 3rem;
  background: radial-gradient(ellipse at 60% 50%, rgba(37, 99, 235, 0.15) 0%, transparent 70%), var(--deep-navy);
}

.page-header .detail-title { margin-bottom: 0.5rem; }

.detail-hero {
  min-height: 50vh;
  display: flex;
  align-items: center;
  padding-top: 100px;
  position: relative;
  overflow: hidden;
  background: radial-gradient(ellipse at 60% 50%, rgba(37, 99, 235, 0.2) 0%, transparent 70%),
              var(--deep-navy);
}

.detail-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.detail-breadcrumb {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--gray-text);
  margin-bottom: 1rem;
}

.detail-breadcrumb a {
  color: var(--cyan-accent);
  text-decoration: none;
}

.detail-breadcrumb a:hover { text-decoration: underline; }

.detail-title {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.1;
  margin-bottom: 1rem;
}

.detail-subtitle {
  color: var(--gray-text);
  font-size: 1.05rem;
  line-height: 1.7;
  max-width: 640px;
}

.detail-content {
  padding: 4rem 0 6rem;
}

.detail-card {
  background: var(--card-bg);
  border: 1px solid var(--border-glow);
  border-radius: 24px;
  padding: 2.5rem;
  margin-bottom: 2rem;
}

.detail-card h3 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: var(--cyan-accent);
}

.detail-card p, .detail-card li {
  color: var(--gray-text);
  line-height: 1.8;
  font-size: 0.95rem;
}

.detail-card ul {
  padding-left: 1.25rem;
  margin-top: 0.5rem;
}

.detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.5rem;
}

.detail-meta-item {
  background: var(--cyan-soft);
  border: 1px solid var(--border-glow);
  border-radius: 50px;
  padding: 0.4rem 1rem;
  font-size: 0.8rem;
  color: var(--cyan-accent);
  font-family: 'JetBrains Mono', monospace;
}

.detail-thumb {
  height: 280px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  opacity: 0.5;
  margin-bottom: 2rem;
}

.detail-sidebar {
  background: var(--card-bg);
  border: 1px solid var(--border-glow);
  border-radius: 20px;
  padding: 2rem;
  position: sticky;
  top: 100px;
}

.detail-sidebar h4 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  margin-bottom: 1rem;
}

.related-item {
  display: block;
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  text-decoration: none;
  color: var(--white);
  transition: color 0.3s ease;
}

.related-item:last-child { border-bottom: none; }

.related-item:hover { color: var(--cyan-accent); }

.related-item small {
  display: block;
  color: var(--gray-text);
  font-size: 0.75rem;
  margin-top: 0.2rem;
}

.btn-back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--gray-text);
  text-decoration: none;
  font-size: 0.9rem;
  margin-bottom: 2rem;
  transition: color 0.3s ease;
}

.btn-back:hover { color: var(--cyan-accent); }

.project-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: #fbbf24;
  background: rgba(251, 191, 36, 0.12);
  border: 1px solid rgba(251, 191, 36, 0.35);
  padding: 0.4rem 0.9rem;
  border-radius: 50px;
  margin-bottom: 0.75rem;
}

.planned-features-note {
  color: var(--gray-text);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.planned-features-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 0.65rem;
}

.planned-features-list li {
  background: rgba(0, 212, 255, 0.05);
  border: 1px solid rgba(0, 212, 255, 0.12);
  border-radius: 10px;
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  line-height: 1.4;
  color: #e2e8f0;
}