/* ============================================
   AlfaBuild — Project Detail Pages
   Shared stylesheet
   ============================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --black: #0a0a08;
  --white: #f5f0e8;
  --amber: #e8a020;
  --amber-light: #ffc84a;
  --concrete: #2a2820;
  --mid: #4a4638;
  --muted: #8a8270;
  --border: rgba(232,160,32,0.25);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'DM Sans', sans-serif;
  background-color: var(--black);
  color: var(--white);
  overflow-x: hidden;
  min-height: 100vh;
}

body::before {
  content: '';
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none; z-index: 0; opacity: 0.6;
}

/* ─── NAV ─── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; justify-content: space-between; align-items: center;
  padding: 1.5rem 4rem;
  border-bottom: 1px solid var(--border);
  background: rgba(10,10,8,0.88);
  backdrop-filter: blur(12px);
}

.nav-logo {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 2rem;
  letter-spacing: 0.12em;
  color: var(--amber);
  text-decoration: none;
}

.nav-links { display: flex; gap: 2.5rem; list-style: none; }
.nav-links a {
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--white); }

.nav-cta {
  font-family: 'Space Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  border: 1px solid var(--amber);
  color: var(--amber);
  padding: 0.5rem 1.4rem;
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
}
.nav-cta:hover { background: var(--amber); color: var(--black); }

/* ─── BREADCRUMB ─── */
.breadcrumb {
  padding: 6rem 4rem 0;
  position: relative;
  z-index: 2;
}
.breadcrumb-inner {
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  padding-top: 2.5rem;
  display: flex; align-items: center; gap: 0.8rem;
  flex-wrap: wrap;
}
.breadcrumb-inner a { color: var(--amber); text-decoration: none; }
.breadcrumb-inner a:hover { color: var(--white); }
.breadcrumb-inner .sep { color: var(--mid); }

/* ─── PROJECT HERO ─── */
.project-hero {
  padding: 2.5rem 4rem 4rem;
  position: relative;
  border-bottom: 1px solid var(--border);
}

.project-tag {
  font-family: 'Space Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 1.5rem;
  display: flex; align-items: center; gap: 0.8rem;
}
.project-tag::before {
  content: '';
  display: block; width: 40px; height: 1px;
  background: var(--amber);
}

.project-title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(3rem, 8vw, 8rem);
  line-height: 0.95;
  letter-spacing: 0.02em;
  color: var(--white);
  margin-bottom: 2.5rem;
  max-width: 16ch;
}
.project-title span { color: var(--amber); }

.project-lede {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--muted);
  font-weight: 300;
  max-width: 60ch;
  margin-bottom: 3rem;
}

/* ─── META STRIP ─── */
.meta-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0;
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
  margin-top: 2rem;
}
.meta-item {
  padding: 1.8rem 1.6rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.meta-label {
  font-family: 'Space Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 0.8rem;
}
.meta-value {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.5rem;
  letter-spacing: 0.04em;
  color: var(--white);
  line-height: 1.1;
}

/* ─── COVER IMAGE ─── */
.cover-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--concrete);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.cover-frame img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}
.cover-frame .cover-placeholder {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  flex-direction: column; gap: 1rem;
  background: repeating-linear-gradient(
    45deg,
    var(--concrete),
    var(--concrete) 14px,
    var(--black) 14px,
    var(--black) 28px
  );
  font-family: 'Space Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: center;
  padding: 2rem;
}
.cover-frame .cover-placeholder .ph-title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.6rem;
  letter-spacing: 0.12em;
  color: var(--amber);
}

/* ─── OVERVIEW SECTION ─── */
.overview {
  padding: 6rem 4rem;
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 4rem;
  border-bottom: 1px solid var(--border);
  position: relative;
  z-index: 2;
}
.overview-tag {
  font-family: 'Space Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 1rem;
}
.overview-heading {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--white);
}
.overview-body p {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--muted);
  font-weight: 300;
  margin-bottom: 1.4rem;
}
.overview-body p strong {
  color: var(--white);
  font-weight: 500;
}

/* ─── SCOPE LIST ─── */
.scope {
  padding: 6rem 4rem;
  border-bottom: 1px solid var(--border);
  position: relative;
  z-index: 2;
}
.scope-header {
  display: flex; justify-content: space-between; align-items: flex-end;
  margin-bottom: 3.5rem;
  flex-wrap: wrap; gap: 1.5rem;
}
.scope-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 0;
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
}
.scope-item {
  padding: 2.2rem 1.8rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  position: relative;
}
.scope-num {
  font-family: 'Space Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  color: var(--amber);
  margin-bottom: 1.4rem;
}
.scope-item h4 {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.3rem;
  letter-spacing: 0.06em;
  color: var(--white);
  margin-bottom: 0.6rem;
}
.scope-item p {
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--muted);
  font-weight: 300;
}

/* ─── GALLERY ─── */
.gallery {
  padding: 6rem 4rem;
  border-bottom: 1px solid var(--border);
  position: relative;
  z-index: 2;
}
.gallery-header {
  display: flex; justify-content: space-between; align-items: flex-end;
  margin-bottom: 3.5rem;
  flex-wrap: wrap; gap: 1.5rem;
}
.gallery-count {
  font-family: 'Space Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}
.gallery-count span { color: var(--amber); }

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5px;
  background: var(--border);
  padding: 1.5px;
}
.gallery-tile {
  position: relative;
  aspect-ratio: 4/3;
  background: var(--concrete);
  overflow: hidden;
  cursor: zoom-in;
}
.gallery-tile.wide { grid-column: span 2; }
.gallery-tile.tall { grid-row: span 2; aspect-ratio: 3/4; }
.gallery-tile img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
  filter: grayscale(15%);
}
.gallery-tile:hover img { transform: scale(1.04); filter: grayscale(0%); }
.gallery-tile-num {
  position: absolute; top: 1rem; left: 1rem;
  font-family: 'Space Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  color: var(--amber);
  background: rgba(10,10,8,0.7);
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--border);
}

/* Empty state */
.gallery-empty {
  padding: 4rem 2rem;
  text-align: center;
  border: 1px dashed var(--border);
  background: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 14px,
    rgba(232,160,32,0.03) 14px,
    rgba(232,160,32,0.03) 28px
  );
}
.gallery-empty .empty-title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.4rem;
  letter-spacing: 0.1em;
  color: var(--white);
  margin-bottom: 0.6rem;
}
.gallery-empty .empty-sub {
  font-family: 'Space Mono', monospace;
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--muted);
  letter-spacing: 0.05em;
}
.gallery-empty code {
  display: inline-block;
  background: var(--concrete);
  padding: 0.2rem 0.6rem;
  color: var(--amber);
  border: 1px solid var(--border);
  margin: 0 0.2rem;
}

/* ─── LIGHTBOX ─── */
.lightbox {
  position: fixed; inset: 0;
  background: rgba(10,10,8,0.97);
  z-index: 1000;
  display: none;
  align-items: center; justify-content: center;
  padding: 4rem;
}
.lightbox.open { display: flex; }
.lightbox img {
  max-width: 100%; max-height: 100%;
  object-fit: contain;
  border: 1px solid var(--border);
}
.lightbox-close {
  position: absolute; top: 1.5rem; right: 1.5rem;
  background: transparent;
  border: 1px solid var(--amber);
  color: var(--amber);
  width: 44px; height: 44px;
  font-size: 1.4rem;
  cursor: pointer;
  font-family: 'Bebas Neue', sans-serif;
  transition: background 0.2s, color 0.2s;
}
.lightbox-close:hover { background: var(--amber); color: var(--black); }
.lightbox-nav {
  position: absolute;
  top: 50%; transform: translateY(-50%);
  background: transparent;
  border: 1px solid var(--amber);
  color: var(--amber);
  width: 52px; height: 52px;
  font-size: 1.4rem;
  cursor: pointer;
  font-family: 'Bebas Neue', sans-serif;
  transition: background 0.2s, color 0.2s;
}
.lightbox-nav:hover { background: var(--amber); color: var(--black); }
.lightbox-nav.prev { left: 1.5rem; }
.lightbox-nav.next { right: 1.5rem; }
.lightbox-counter {
  position: absolute; bottom: 1.5rem; left: 50%;
  transform: translateX(-50%);
  font-family: 'Space Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--muted);
}
.lightbox-counter span { color: var(--amber); }

/* ─── NEXT PROJECT ─── */
.next-project {
  padding: 6rem 4rem;
  border-bottom: 1px solid var(--border);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
}
.next-project-cell {
  padding: 3rem 2.5rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: var(--white);
  display: block;
  transition: background 0.3s;
  position: relative;
}
.next-project-cell:hover { background: var(--concrete); }
.next-project-cell .direction {
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 1.2rem;
}
.next-project-cell .next-title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 2.2rem;
  letter-spacing: 0.04em;
  line-height: 1.05;
  color: var(--white);
  margin-bottom: 0.3rem;
}
.next-project-cell .next-sub {
  font-size: 0.85rem;
  color: var(--muted);
}
.next-project-cell.right { text-align: right; }

/* ─── CONTACT STRIP ─── */
.contact-strip {
  padding: 6rem 4rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.contact-strip .section-tag {
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 1rem;
}
.contact-strip h2 {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(2.4rem, 5vw, 4.5rem);
  letter-spacing: 0.02em;
  line-height: 1;
  margin-bottom: 2rem;
}
.contact-strip h2 span { color: var(--amber); }
.contact-actions {
  display: flex; justify-content: center; gap: 1.5rem; flex-wrap: wrap;
  margin-top: 1.5rem;
}
.contact-btn {
  font-family: 'Space Mono', monospace;
  font-size: 0.78rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 1rem 2rem;
  text-decoration: none;
  border: 1px solid var(--amber);
  color: var(--amber);
  transition: background 0.2s, color 0.2s;
}
.contact-btn:hover { background: var(--amber); color: var(--black); }
.contact-btn.primary { background: var(--amber); color: var(--black); }
.contact-btn.primary:hover { background: var(--amber-light); }

/* ─── FOOTER ─── */
footer {
  padding: 3rem 4rem;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 1.5rem;
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}
footer a { color: var(--amber); text-decoration: none; }

/* ─── RESPONSIVE ─── */
@media (max-width: 900px) {
  nav { padding: 1.2rem 1.5rem; }
  .nav-links { display: none; }
  .breadcrumb, .project-hero, .overview, .scope, .gallery,
  .next-project, .contact-strip, footer { padding-left: 1.5rem; padding-right: 1.5rem; }
  .overview { grid-template-columns: 1fr; gap: 2rem; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-tile.wide { grid-column: span 2; }
  .gallery-tile.tall { grid-row: auto; aspect-ratio: 4/3; }
  .next-project { grid-template-columns: 1fr; }
  .next-project-cell.right { text-align: left; }
}
@media (max-width: 600px) {
  .gallery-grid { grid-template-columns: 1fr; }
  .gallery-tile.wide { grid-column: auto; }
  .lightbox { padding: 1rem; }
  .lightbox-nav { width: 40px; height: 40px; }
}