/* ============================================
   Before & After Gallery — Premium Components
   ============================================ */

/* Category Filter Buttons */
.category-filter {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin: var(--space-lg) 0;
  padding: 0 var(--space-md);
}

.filter-btn {
  font-family: var(--font-accent);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 0.85rem 2rem;
  background: transparent;
  color: var(--color-dark-grey);
  border: 2px solid var(--color-light-grey);
  cursor: pointer;
  transition: all var(--transition);
  border-radius: 0;
}

.filter-btn:hover {
  border-color: var(--color-dark-green);
  color: var(--color-dark-green);
  transform: translateY(-2px);
}

.filter-btn.active {
  background-color: var(--color-dark-green);
  color: var(--color-white);
  border-color: var(--color-dark-green);
}

/* Before/After Comparison Container */
.before-after-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-lg);
}

/* Individual Comparison Card */
.comparison-card {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.comparison-card.hidden {
  display: none;
}

.comparison-card.fade-out {
  opacity: 0;
  transform: translateY(20px);
}

/* Card Header */
.comparison-card__header {
  margin-bottom: var(--space-md);
}

.comparison-card__category {
  display: inline-block;
  font-family: var(--font-accent);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-gold);
  margin-bottom: 0.5rem;
}

.comparison-card__title {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  color: var(--color-black);
  margin: 0;
}

/* Comparison Images Container */
.comparison-images {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--space-md);
  align-items: center;
  background: var(--color-off-white);
  padding: var(--space-md);
  border: 1px solid rgba(0, 0, 0, 0.06);
  transition: box-shadow var(--transition);
}

.comparison-card:hover .comparison-images {
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
}

/* Image Containers */
.comparison-before,
.comparison-after {
  position: relative;
  overflow: hidden;
  width: 100%;
  aspect-ratio: 4 / 3;
}

.comparison-before img,
.comparison-after img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.comparison-card:hover .comparison-before img,
.comparison-card:hover .comparison-after img {
  transform: scale(1.05);
}

/* Image Labels */
.image-label {
  position: absolute;
  top: var(--space-sm);
  left: var(--space-sm);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  padding: 0.4rem 1rem;
  font-family: var(--font-accent);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-dark-grey);
  z-index: 2;
  border: 1px solid rgba(0, 0, 0, 0.1);
}

/* Arrow Between Images */
.comparison-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background: var(--color-white);
  border: 2px solid var(--color-dark-green);
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
  transition: all var(--transition);
}

.comparison-card:hover .comparison-arrow {
  background: var(--color-dark-green);
  transform: scale(1.1);
  box-shadow: 0 4px 20px rgba(27, 58, 26, 0.3);
}

.comparison-arrow svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-dark-green);
  transition: stroke var(--transition);
}

.comparison-card:hover .comparison-arrow svg {
  stroke: var(--color-white);
}

/* Card Footer */
.comparison-card__footer {
  margin-top: var(--space-md);
  padding-top: var(--space-sm);
  border-top: 1px solid rgba(0, 0, 0, 0.06);
}

.comparison-card__location {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--color-warm-grey);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.comparison-card__location svg {
  width: 16px;
  height: 16px;
  stroke: var(--color-warm-grey);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  color: var(--color-warm-grey);
  font-size: 1.1rem;
  grid-column: 1 / -1;
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .category-filter {
    gap: 0.5rem;
    margin: var(--space-md) 0;
  }

  .filter-btn {
    font-size: 0.75rem;
    padding: 0.7rem 1.2rem;
  }

  .before-after-gallery {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .comparison-images {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }

  .comparison-before,
  .comparison-after {
    width: 100%;
    aspect-ratio: 4 / 3;
  }

  .comparison-arrow {
    width: 40px;
    height: 40px;
    transform: rotate(90deg);
    margin: var(--space-sm) auto;
  }

  .comparison-card:hover .comparison-arrow {
    transform: rotate(90deg) scale(1.1);
  }

  .comparison-card__title {
    font-size: 1.4rem;
  }
}

/* Animation on Load */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.comparison-card {
  animation: fadeInUp 0.6s ease forwards;
}

.comparison-card:nth-child(1) { animation-delay: 0.1s; }
.comparison-card:nth-child(2) { animation-delay: 0.2s; }
.comparison-card:nth-child(3) { animation-delay: 0.3s; }
.comparison-card:nth-child(4) { animation-delay: 0.4s; }
.comparison-card:nth-child(5) { animation-delay: 0.5s; }

/* ============================================
   Lightbox Modal — Premium Overlay Gallery
   ============================================ */

/* Modal Overlay */
.lightbox-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.lightbox-modal.active {
  display: flex;
  opacity: 1;
}

/* Lightbox Content Container */
.lightbox-content {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Lightbox Image */
.lightbox-image {
  max-width: 90vw;
  max-height: 90vh;
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
  opacity: 0;
  transition: opacity 0.4s ease;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.lightbox-image.loaded {
  opacity: 1;
}

/* Image Label (Before/After) */
.lightbox-label {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  padding: 0.5rem 1.2rem;
  font-family: var(--font-accent);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-white);
  z-index: 10;
  border: 1px solid rgba(255, 255, 255, 0.2);
  pointer-events: none;
}

/* Close Button */
.lightbox-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 50px;
  height: 50px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  color: var(--color-white);
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
  z-index: 10001;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  padding: 0;
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: rotate(90deg) scale(1.1);
}

/* Navigation Arrows */
.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 60px;
  height: 60px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  color: var(--color-white);
  cursor: pointer;
  z-index: 10001;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  padding: 0;
}

.lightbox-nav svg {
  width: 28px;
  height: 28px;
  stroke: var(--color-white);
}

.lightbox-nav:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-50%) scale(1.1);
}

.lightbox-nav--prev {
  left: 2rem;
}

.lightbox-nav--next {
  right: 2rem;
}

.lightbox-nav:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.lightbox-nav:disabled:hover {
  transform: translateY(-50%) scale(1);
  background: rgba(255, 255, 255, 0.1);
}

/* Add Cursor Pointer to Comparison Cards */
.comparison-images {
  cursor: pointer;
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .lightbox-close {
    top: 1rem;
    right: 1rem;
    width: 44px;
    height: 44px;
    font-size: 1.5rem;
  }

  .lightbox-nav {
    width: 50px;
    height: 50px;
  }

  .lightbox-nav svg {
    width: 24px;
    height: 24px;
  }

  .lightbox-nav--prev {
    left: 1rem;
  }

  .lightbox-nav--next {
    right: 1rem;
  }

  .lightbox-label {
    top: 0.75rem;
    left: 0.75rem;
    padding: 0.4rem 1rem;
    font-size: 12px;
  }

  .lightbox-content {
    max-width: 95vw;
    max-height: 95vh;
  }

  .lightbox-image {
    max-width: 95vw;
    max-height: 95vh;
  }
}

/* Smooth Fade Animation for Image Transitions */
@keyframes lightboxFadeIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.lightbox-image.loaded {
  animation: lightboxFadeIn 0.4s ease forwards;
}

/* Prevent Body Scroll When Modal Open */
body.lightbox-open {
  overflow: hidden;
}