/* ==========================================================================
   PROJECT DETAIL PAGE — Cover, meta strip, gallery, lightbox
   ========================================================================== */

.proj-loading {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  padding-top: 120px;
}

/* ── Cover ─────────────────────────────────────────────────────────────── */

.proj-cover {
  width: 100%;
  height: 78vh;
  min-height: 480px;
  overflow: hidden;
  position: relative;
  margin-top: 0;
}

.proj-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ── Header (title + breadcrumb) ──────────────────────────────────────── */

.proj-header {
  padding: clamp(60px, 8vw, 100px) 0 clamp(20px, 3vw, 40px);
  background: var(--bg);
}

.proj-header .breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.proj-header .breadcrumb a {
  color: var(--text-muted);
  transition: color 0.3s var(--ease);
}

.proj-header .breadcrumb a:hover {
  color: var(--accent-dark);
}

.proj-header .breadcrumb-sep {
  opacity: 0.4;
}

.proj-title {
  font-family: var(--font-serif);
  font-size: clamp(40px, 7vw, 96px);
  font-weight: 400;
  line-height: 1.02;
  color: var(--text);
}

/* ── Body grid (description + meta) ───────────────────────────────────── */

.proj-body {
  padding: clamp(40px, 5vw, 64px) 0 clamp(60px, 8vw, 100px);
}

.proj-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: start;
}

.proj-desc .section-tag {
  display: inline-block;
  margin-bottom: 20px;
}

.proj-desc p {
  font-family: var(--font-serif);
  font-size: clamp(18px, 1.6vw, 22px);
  line-height: 1.6;
  color: var(--text);
}

.proj-meta {
  border-top: 1px solid var(--border);
}

.proj-meta-row {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 24px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
  align-items: baseline;
}

.proj-meta-label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.proj-meta-value {
  font-family: var(--font-serif);
  font-size: 17px;
  color: var(--text);
}

/* ── Gallery ───────────────────────────────────────────────────────────── */

.proj-gallery {
  padding: clamp(40px, 6vw, 80px) 0 clamp(60px, 8vw, 100px);
  background: var(--bg-alt);
  transition: background 0.5s var(--ease);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(12px, 1.5vw, 20px);
}

.gallery-item {
  display: block;
  width: 100%;
  padding: 0;
  border: none;
  background: var(--bg);
  cursor: zoom-in;
  overflow: hidden;
  aspect-ratio: 4/3;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.gallery-item:hover img {
  transform: scale(1.04);
}

/* ── Footer nav ────────────────────────────────────────────────────────── */

.proj-nav {
  padding: clamp(40px, 5vw, 64px) 0 clamp(80px, 10vw, 120px);
}

.proj-nav-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 24px;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.proj-nav-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-decoration: none;
  color: var(--text);
  transition: color 0.3s var(--ease);
}

.proj-nav-link:hover {
  color: var(--accent-dark);
}

.proj-nav-next {
  text-align: right;
}

.proj-nav-label {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.proj-nav-name {
  font-family: var(--font-serif);
  font-size: clamp(20px, 1.8vw, 26px);
}

.proj-nav-back {
  font-size: 12px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-decoration: none;
  border-bottom: 1px solid var(--border-med);
  padding-bottom: 6px;
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease);
}

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

/* ── Not Found ─────────────────────────────────────────────────────────── */

.proj-notfound {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 120px;
}

.proj-notfound h1 {
  font-family: var(--font-serif);
  font-size: clamp(40px, 6vw, 80px);
  font-weight: 400;
  margin-bottom: 16px;
  color: var(--text);
}

.proj-notfound p {
  color: var(--text-muted);
  margin-bottom: 32px;
}

/* ── Lightbox ──────────────────────────────────────────────────────────── */

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 10, 0.96);
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.lightbox.active {
  display: flex;
}

.lightbox-img {
  max-width: 92vw;
  max-height: 78vh;
  width: auto;
  height: auto;
  object-fit: contain;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5);
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 24px;
  background: transparent;
  border: none;
  color: #fafaf8;
  font-size: 36px;
  line-height: 1;
  cursor: pointer;
  opacity: 0.8;
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
}

.lightbox-close:hover {
  opacity: 1;
  transform: scale(1.05);
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: transparent;
  border: none;
  color: #fafaf8;
  font-size: 56px;
  line-height: 1;
  cursor: pointer;
  padding: 12px 18px;
  opacity: 0.7;
  transition: opacity 0.2s var(--ease);
}

.lightbox-nav:hover {
  opacity: 1;
}

.lightbox-prev {
  left: 12px;
}

.lightbox-next {
  right: 12px;
}

.lightbox-strip {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  max-width: 90vw;
  overflow-x: auto;
  padding: 8px 12px;
  scrollbar-width: thin;
}

.strip-thumb {
  flex: 0 0 auto;
  width: 70px;
  height: 50px;
  padding: 0;
  border: 1px solid transparent;
  background: transparent;
  cursor: pointer;
  overflow: hidden;
  opacity: 0.55;
  transition: opacity 0.2s var(--ease), border-color 0.2s var(--ease);
}

.strip-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.strip-thumb:hover {
  opacity: 0.85;
}

.strip-thumb.active {
  opacity: 1;
  border-color: var(--accent);
}

/* ── Responsive ────────────────────────────────────────────────────────── */

@media (max-width: 960px) {
  .proj-grid {
    grid-template-columns: 1fr;
  }

  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .proj-nav-inner {
    grid-template-columns: 1fr;
    gap: 20px;
    text-align: left;
  }

  .proj-nav-next {
    text-align: left;
  }

  .lightbox-nav {
    font-size: 40px;
    padding: 8px 12px;
  }

  .strip-thumb {
    width: 56px;
    height: 40px;
  }
}

@media (max-width: 560px) {
  .gallery-grid {
    grid-template-columns: 1fr;
  }
}