@import url('https://fonts.googleapis.com/css2?family=Courier+Prime:ital,wght@0,400;0,700;1,400&display=swap');

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

:root {
  --bg: #f4f3ef;
  --ink: #1a1a18;
  --muted: #888884;
  --accent: #1a1a18;
  --border: #d8d7d3;
  --font: 'Courier Prime', 'Courier New', monospace;
  --header-h: 48px;
}

html, body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 12px;
  letter-spacing: 0.06em;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ─── HEADER ─── */

header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  align-items: center;
  padding: 0 28px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  z-index: 100;
  text-transform: uppercase;
}

.header-left .site-name {
  font-weight: 700;
  letter-spacing: 0.12em;
}

.header-center {
  text-align: center;
  color: var(--muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.header-right {
  text-align: right;
  color: var(--muted);
}

.header-right a:hover {
  color: var(--ink);
}

.divider {
  color: var(--border);
}

/* ─── INDEX MAIN ─── */

.index-main {
  display: grid;
  grid-template-columns: 380px 1fr;
  min-height: 100vh;
  padding-top: var(--header-h);
}

/* ─── COLLECTION NAV ─── */

.collection-nav {
  border-right: 1px solid var(--border);
  padding: 60px 0 60px 0;
  display: flex;
  flex-direction: column;
}

.collection-link {
  display: grid;
  grid-template-columns: 40px 1fr auto;
  align-items: baseline;
  padding: 20px 28px;
  border-bottom: 1px solid var(--border);
  transition: background 0.15s ease;
  cursor: pointer;
  text-transform: uppercase;
  gap: 12px;
}

.collection-link:first-child {
  border-top: 1px solid var(--border);
}

.collection-link:hover {
  background: var(--ink);
  color: var(--bg);
}

.collection-link:hover .col-count {
  color: var(--muted);
  color: rgba(244,243,239,0.45);
}

.col-number {
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.1em;
}

.collection-link:hover .col-number {
  color: rgba(244,243,239,0.45);
}

.col-title {
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.1em;
}

.col-count {
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: lowercase;
}

/* ─── PREVIEW AREA ─── */

.preview-area {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px;
  position: relative;
}

.preview-image {
  position: absolute;
  max-width: calc(100% - 100px);
  max-height: calc(80vh - var(--header-h) - 100px);
  object-fit: contain;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.preview-image.visible {
  opacity: 1;
}

/* ─── COLLECTION PAGE ─── */

.collection-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 28px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  z-index: 100;
  text-transform: uppercase;
}

.collection-header .back-link {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 8px;
  transition: color 0.15s;
}

.collection-header .back-link:hover {
  color: var(--ink);
}

.collection-header .back-link::before {
  content: '←';
  font-size: 14px;
}

.collection-header .col-name {
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-align: center;
}

.collection-header .col-meta {
  text-align: right;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.08em;
}

/* ─── MASONRY GRID ─── */

.gallery-wrapper {
  padding-top: var(--header-h);
  padding-bottom: 80px;
}

.masonry-grid {
  columns: 3;
  column-gap: 2px;
  padding: 2px;
}

.masonry-item {
  break-inside: avoid;
  margin-bottom: 2px;
  overflow: hidden;
  cursor: pointer;
  position: relative;
}

.masonry-item img {
  display: block;
  width: 100%;
  height: auto;
  transition: opacity 0.3s ease;
  filter: grayscale(0%);
}

.masonry-item:hover img {
  opacity: 0.88;
}

/* ─── LIGHTBOX ─── */

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(26,26,24,0.96);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.lightbox.open {
  opacity: 1;
  pointer-events: all;
}

.lightbox img {
  max-width: 92vw;
  max-height: 92vh;
  object-fit: contain;
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 28px;
  color: rgba(244,243,239,0.5);
  font-family: var(--font);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color 0.15s;
  background: none;
  border: none;
}

.lightbox-close:hover {
  color: var(--bg);
}

.lightbox-nav {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 28px;
  color: rgba(244,243,239,0.45);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.lightbox-nav button {
  background: none;
  border: none;
  color: inherit;
  font-family: var(--font);
  font-size: 11px;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: color 0.15s;
}

.lightbox-nav button:hover {
  color: var(--bg);
}

.lightbox-counter {
  color: rgba(244,243,239,0.3);
  min-width: 60px;
  text-align: center;
}

    .lightbox-caption {
      text-align: center;
      padding: 0.75rem 1.5rem 0.25rem;
      max-width: 640px;
      margin: 0 auto;
    }

    .lightbox-caption-title {
      display: block;
      font-size: 1rem;
      letter-spacing: 0.2em;
      text-transform: uppercase;
      color: rgba(255, 255, 255, 0.5);
      margin-bottom: 0.35rem;
    }

    .lightbox-caption-desc {
      display: block;
      font-size: 1rem;
      letter-spacing: 0.06em;
      color: rgba(255, 255, 255, 0.85);
      line-height: 1.55;
      font-style: italic;
      margin: 0;
    }

/* ─── FOOTER ─── */

footer {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  border-top: 1px solid var(--border);
  background: var(--bg);
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  z-index: 100;
}

/* ─── RESPONSIVE ─── */

@media (max-width: 800px) {
  .index-main {
    grid-template-columns: 1fr;
  }
  .collection-nav {
    border-right: none;
  }
  .preview-area {
    display: none;
  }
  .masonry-grid {
    columns: 2;
  }
  header {
    grid-template-columns: 1fr 1fr;
  }
  .header-center {
    display: none;
  }
}

@media (max-width: 500px) {
  .masonry-grid {
    columns: 1;
  }
}