:root {
  --navy: #0E1623;
  --navy-mid: #1A2640;
  --navy-light: #253350;
  --gold: #C9A84C;
  --gold-light: #E8C878;
  --white: #F7F5F0;
  --white-dim: rgba(247,245,240,0.7);
  --white-faint: rgba(247,245,240,0.12);
  --border: rgba(201,168,76,0.2);
  --serif: 'DM Serif Display', Georgia, serif;
  --sans: 'DM Sans', system-ui, sans-serif;
  --content-width: 760px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--navy);
  color: var(--white);
  font-family: var(--sans);
  font-weight: 400;
  line-height: 1.7;
  overflow-x: hidden;
}

/* ── NAV ── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 4rem;
  background: rgba(14,22,35,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-logo img {
  height: 36px;
  width: auto;
  display: block;
}

.nav-back {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--white-dim);
  text-decoration: none;
  transition: color 0.2s;
}

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

/* ── PROJECT HERO ── */
.project-hero {
  padding: 10rem 4rem 5rem;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.project-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 60% at 80% 40%, rgba(201,168,76,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.project-hero-inner {
  max-width: var(--content-width);
  margin: 0 auto;
  position: relative;
}

.project-category {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.project-category::before {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--gold);
}

h1 {
  font-family: var(--serif);
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1.05;
  color: var(--white);
  margin-bottom: 1.25rem;
  letter-spacing: -0.01em;
}

.project-summary {
  font-size: 1.1rem;
  color: var(--white-dim);
  line-height: 1.75;
  margin-bottom: 2.5rem;
  max-width: 600px;
}

.project-meta {
  display: flex;
  gap: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}

.meta-item { display: flex; flex-direction: column; gap: 0.25rem; }

.meta-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
}

.meta-value {
  font-size: 0.95rem;
  color: var(--white);
}

/* ── PROJECT BODY ── */
.project-body {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 4rem 2rem 6rem;
}

/* ── IMAGES ── */
.project-image {
  margin: 3rem 0;
}

.lead-image {
  margin-top: 0;
  margin-bottom: 4rem;
}

.project-image img {
  width: 100%;
  display: block;
  border: 1px solid var(--border);
}

/* Two-column image grid: wrap two .project-image divs in a .image-pair */
.image-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 3rem 0;
}

.image-pair .project-image { margin: 0; }

.image-caption {
  margin-top: 0.6rem;
  font-size: 0.8rem;
  color: var(--white-dim);
  font-style: italic;
  line-height: 1.5;
}

/* ── TEXT SECTIONS ── */
.project-section {
  margin: 3.5rem 0 2rem;
}

.project-section h2 {
  font-family: var(--serif);
  font-size: 1.75rem;
  color: var(--white);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.project-section h2::before {
  content: '';
  display: block;
  width: 20px;
  height: 1px;
  background: var(--gold);
  flex-shrink: 0;
}

.project-section p {
  font-size: 1.05rem;
  color: var(--white-dim);
  line-height: 1.85;
  margin-bottom: 1rem;
}

.project-section ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.project-section li {
  font-size: 1rem;
  color: var(--white-dim);
  padding-left: 1.25rem;
  position: relative;
  line-height: 1.7;
}

.project-section li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--gold);
  font-size: 0.75rem;
  top: 0.15em;
}

/* ── PROJECT NAV (prev/next) ── */
.project-nav {
  position: static;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 2rem 4rem;
  border-top: 1px solid var(--border);
  background: var(--navy-mid);
  flex-wrap: wrap;
  gap: 1rem;
}

.project-nav-link {
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.project-nav-link.home {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  flex-direction: row;
  align-items: center;
  border: 1px solid var(--border);
  padding: 0.6rem 1.25rem;
  transition: border-color 0.2s;
}

.project-nav-link.home:hover { border-color: var(--gold); }

.project-nav-link.prev,
.project-nav-link.next {
  min-width: 180px;
}

.project-nav-link.next { text-align: right; }

.nav-dir {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
}

.nav-title {
  font-size: 0.95rem;
  color: var(--white-dim);
  transition: color 0.2s;
}

.project-nav-link:hover .nav-title { color: var(--white); }

/* ── FOOTER ── */
footer {
  padding: 2rem 4rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--white-dim);
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  nav, .project-hero, .project-nav, footer { padding-left: 1.5rem; padding-right: 1.5rem; }
  .project-body { padding: 3rem 1.5rem 5rem; }
  .project-meta { gap: 1.5rem; }
  .image-pair { grid-template-columns: 1fr; }
  .project-nav { flex-direction: column; align-items: flex-start; }
  .project-nav-link.next { text-align: left; }
}