.nav-back {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}

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

/* ── Dot grid background ── */
body.page-project {
  background-color: #0d1520;
  background-image: radial-gradient(circle, rgba(56,189,248,0.35) 1px, transparent 1px);
  background-size: 28px 28px;
}

body.page-project .project-section.alt {
  background: transparent;
}

body.page-project nav {
  background: rgba(8,13,20,0.9);
}

/* ── Project Header ── */
.project-header {
  padding: 3rem 0 2rem;
  border-bottom: 3px solid var(--accent);
}

.project-header .container {
  max-width: 1100px;
}

.project-header h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  color: #ffffff;
  margin: 0.5rem 0 1.5rem;
  text-align: left;
}

.project-header .card-tag {
  display: inline-block;
}

.project-header .project-body {
  margin-top: 0;
  max-width: 860px;
  text-align: left;
}

/* ── Project Sections ── */
.project-section {
  padding: 5rem 0;
}

.project-section.alt {
  background: var(--surface);
}

.project-body {
  font-size: 1.1rem;
  color: #cbd5e1;
  line-height: 1.8;
  max-width: 760px;
}

/* ── Detail Cards ── */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-top: 2rem;
}

.project-detail-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: border-color 0.2s;
}

.project-detail-card:hover {
  border-color: var(--accent);
}

.project-detail-card h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.project-detail-card p {
  font-size: 0.9rem;
  color: #94a3b8;
  line-height: 1.6;
}

/* ── Hardware Layout ── */
.hardware-layout {
  display: grid;
  grid-template-columns: 550px 1fr;
  gap: 2.5rem;
  align-items: start;
  margin-top: 2rem;
}

.hardware-img {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--border);
  box-shadow: 0 8px 40px rgba(0,0,0,0.6);
  position: sticky;
  top: 5rem;
}

@media (max-width: 800px) {
  .hardware-layout {
    grid-template-columns: 1fr;
  }
  .hardware-img {
    position: static;
    max-width: 400px;
  }
}

/* ── Pine Photos ── */
.pine-photos {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: sticky;
  top: 5rem;
}



/* ── Antenna Grid ── */

.antenna-grid {
  display: flex;
  flex-direction: row;
  gap: 1.5rem;
  margin-top: 2rem;
}

.antenna-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s;
  flex: 1;
  text-align: center;
}

.antenna-card:hover {
  border-color: var(--accent);
}

.antenna-img {
  width: 100%;
  height: 200px;
  object-fit: contain;
  background: var(--bg);
  display: block;
  padding: 0.5rem;
}

.antenna-card h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  padding: 0.6rem 0.75rem 0.3rem;
}

.antenna-card p {
  font-size: 0.8rem;
  color: #94a3b8;
  line-height: 1.5;
  padding: 0 0.75rem 0.75rem;
}

/* ── Footer ── */
.project-footer {
  padding: 4rem 2.5rem;
  display: flex;
  justify-content: center;
  border-top: 1px solid var(--border);
}