/* ========================================
   gallery.gillescolling.com — v3
   Tight masonry grid, edz.us reference
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@300;400&family=Outfit:wght@200;300;400&display=swap');

:root {
  --bg:          #0a0a0a;
  --bg-surface:  #161616;
  --text:        #b8b4ac;
  --text-dim:    #4a4740;
  --text-bright: #edebe6;
  --accent:      #c4a882;
  --accent-dim:  #7a6e5c;
  --serif:       'Playfair Display', Georgia, serif;
  --sans:        'Outfit', 'Helvetica Neue', sans-serif;
  --ease:        cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-weight: 300;
  overflow-x: hidden;
}

/* ===== HEADER ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem clamp(1.5rem, 4vw, 3rem);
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.header-name {
  font-family: var(--serif);
  font-weight: 300;
  font-size: 1.2rem;
  color: var(--text-bright);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.header-nav {
  display: flex;
  gap: 2rem;
}

.filter-btn {
  background: none;
  border: none;
  font-family: var(--sans);
  font-weight: 300;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
  cursor: pointer;
  padding: 0.2rem 0;
  position: relative;
  transition: color 0.3s var(--ease);
}

.filter-btn::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s var(--ease);
}

.filter-btn:hover { color: var(--text); }

.filter-btn.active { color: var(--text-bright); }

.filter-btn.active::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* ===== GALLERY — MASONRY ===== */
.gallery {
  columns: 3;
  column-gap: 0;
  padding: 0;
  max-width: 100%;
}

.gallery-item {
  break-inside: avoid;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  display: block;
  margin-bottom: 0;
  line-height: 0;
}

.gallery-item img {
  display: block;
  width: 100%;
  height: auto;
  transition: transform 0.6s var(--ease), filter 0.4s var(--ease);
  filter: brightness(0.9);
}

.gallery-item:hover img {
  transform: scale(1.02);
  filter: brightness(1);
}

/* Placeholder styling */
.placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  font-size: 0.7rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
  background: var(--bg-surface);
  border: 1px solid rgba(255,255,255,0.03);
  transition: transform 0.6s var(--ease), filter 0.4s var(--ease);
  filter: brightness(0.9);
}

.gallery-item:hover .placeholder {
  transform: scale(1.02);
  filter: brightness(1);
}

/* Hide filtered */
.gallery-item.hidden {
  display: none;
}

/* Scroll reveal */
.gallery-item {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

.gallery-item.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== LIGHTBOX ===== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.97);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s var(--ease);
}

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

.lightbox-img {
  max-width: 92vw;
  max-height: 90vh;
  object-fit: contain;
  transition: transform 0.4s var(--ease), opacity 0.3s;
  transform: scale(0.95);
  opacity: 0;
}

.lightbox.open .lightbox-img {
  transform: scale(1);
  opacity: 1;
}

.lightbox-close {
  position: absolute;
  top: 1.2rem;
  right: 1.5rem;
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 2rem;
  cursor: pointer;
  transition: color 0.3s;
  font-weight: 200;
  z-index: 2;
  line-height: 1;
}

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

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 1.5rem;
  transition: color 0.3s;
  z-index: 2;
}

.lightbox-nav:hover { color: var(--text-bright); }

.lightbox-prev { left: 0.5rem; }
.lightbox-next { right: 0.5rem; }

.lightbox-counter {
  position: absolute;
  top: 1.5rem;
  left: 1.5rem;
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  font-weight: 300;
}

.lightbox-caption {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  white-space: nowrap;
}

.lightbox-caption-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 0.95rem;
  color: var(--text-bright);
}

.lightbox-caption-meta {
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  margin-top: 0.15rem;
}

/* ===== FOOTER ===== */
.footer {
  padding: 2.5rem 0;
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.04);
}

.footer-link {
  font-size: 0.7rem;
  color: var(--text-dim);
  text-decoration: none;
  letter-spacing: 0.08em;
  transition: color 0.3s;
}

.footer-link:hover { color: var(--accent); }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .gallery { columns: 2; }
}

@media (max-width: 550px) {
  .gallery { columns: 1; }

  .header-name { font-size: 1rem; }

  .header-nav { gap: 1.2rem; }

  .lightbox-nav { display: none; }
}