/* gallery.css - Minimalist White Image Grid */
:root {
  --bg-page: #ffffff;
  --bg-card: #f8f9fa;
  --border-color: #eaeaea;
  --text-color: #111111;
  --text-muted: #777777;
  --gap: 20px;
  --radius: 8px;
  --transition: all 0.3s cubic-bezier(0.25, 1, 0.5, 1);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-page);
  color: var(--text-color);
  line-height: 1.5;
  min-height: 100vh;
  padding: 0;
  margin: 0;
}

/* Minimal Top Navigation */
.minimal-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text-color);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.5px;
  transition: var(--transition);
}

.back-link:hover {
  color: #000;
  transform: translateX(-3px);
}

.gallery-title-minimal {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
}

/* Grid Container */
.gallery-container {
  max-width: 1600px;
  margin: 0 auto;
  padding: 32px;
}

/* Minimal Image Grid */
.minimal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: var(--gap);
}

/* Grid Item */
.grid-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  aspect-ratio: 4 / 3;
  cursor: pointer;
  
  /* Scroll animation initial state */
  opacity: 0;
  transform: translateY(40px) scale(0.96);
  transition: opacity 0.7s cubic-bezier(0.25, 1, 0.5, 1), 
              transform 0.7s cubic-bezier(0.25, 1, 0.5, 1),
              box-shadow 0.3s ease, 
              border-color 0.3s ease;
}

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

.grid-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s cubic-bezier(0.25, 1, 0.5, 1), opacity 0.3s ease;
}

.grid-item.visible:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
  border-color: #d1d5db;
}

.grid-item:hover img {
  transform: scale(1.03);
}

/* Minimal Fullscreen Lightbox */
.minimal-lightbox {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.minimal-lightbox.active {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-image-wrapper {
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-image-wrapper img {
  max-width: 100%;
  max-height: 88vh;
  object-fit: contain;
  border-radius: 4px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

/* Clean Nav Controls */
.lb-close {
  position: absolute;
  top: 20px;
  right: 24px;
  background: transparent;
  border: none;
  font-size: 28px;
  line-height: 1;
  color: #111;
  cursor: pointer;
  padding: 8px;
  transition: var(--transition);
}

.lb-close:hover {
  opacity: 0.6;
  transform: scale(1.1);
}

.lb-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--border-color);
  color: #111;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.lb-nav:hover {
  background: #111;
  color: #fff;
  border-color: #111;
}

.lb-prev {
  left: 24px;
}

.lb-next {
  right: 24px;
}

/* Mobile Responsiveness */
@media (max-width: 900px) {
  .minimal-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
  }
  .gallery-container {
    padding: 20px;
  }
  .minimal-header {
    padding: 14px 20px;
  }
}

@media (max-width: 600px) {
  .minimal-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .gallery-container {
    padding: 14px;
  }
  .lb-nav {
    width: 40px;
    height: 40px;
    font-size: 15px;
  }
  .lb-prev {
    left: 10px;
  }
  .lb-next {
    right: 10px;
  }
}