/* ===================================
   Before/After Image Comparison Slider
   =================================== */

/* Container for all comparison sliders */
.comparison-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* Individual comparison slider */
.image-comparison {
  position: relative;
  width: 100%;
  aspect-ratio: 2/3; /* Portrait orientation for photography */
  overflow: hidden;
  border-radius: var(--border-radius-lg);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  cursor: ew-resize;
  user-select: none;
}

/* Before image (bottom layer) */
.image-comparison__before {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}

/* After image (top layer with clip-path) */
.image-comparison__after {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  clip-path: inset(0 50% 0 0);
  pointer-events: none;
}

/* Divider line */
.image-comparison__divider {
  position: absolute;
  top: 0;
  left: 50%;
  width: 2px;
  height: 100%;
  background: white;
  transform: translateX(-50%);
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
  pointer-events: none;
  z-index: 2;
}

/* Handle (circular button on divider) */
.image-comparison__handle {
  position: absolute;
  bottom: 50px;
  left: 50%;
  width: 50px;
  height: 50px;
  background: transparent;
  border: 2px solid white;
  border-radius: 50%;
  transform: translateX(-50%);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  z-index: 3;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  backdrop-filter: blur(4px);
}

.image-comparison:active .image-comparison__handle {
  transform: translateX(-50%) scale(1.1);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.6);
}

.image-comparison:hover .image-comparison__handle {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.7);
}

/* Arrow icons in handle - Stylish white arrows */
.image-comparison__handle::before,
.image-comparison__handle::after {
  content: '';
  position: absolute;
  width: 10px;
  height: 10px;
  border-style: solid;
  border-color: white;
  border-width: 0 2px 2px 0;
}

/* Left arrow */
.image-comparison__handle::before {
  left: 12px;
  transform: rotate(135deg);
}

/* Right arrow */
.image-comparison__handle::after {
  right: 12px;
  transform: rotate(-45deg);
}

/* Labels for Before/After */
.image-comparison__label {
  position: absolute;
  top: var(--spacing-md);
  padding: var(--spacing-xs) var(--spacing-md);
  background: rgba(0, 0, 0, 0.7);
  color: white;
  font-size: var(--font-size-xs);
  font-family: var(--font-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  border-radius: var(--border-radius);
  pointer-events: none;
  z-index: 4;
  backdrop-filter: blur(4px);
}

.image-comparison__label--before {
  left: var(--spacing-md);
}

.image-comparison__label--after {
  right: var(--spacing-md);
}

/* Hover effect */
.image-comparison:hover .image-comparison__handle {
  border-color: rgba(255, 255, 255, 0.9);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.7);
}

/* ===================================
   Responsive Design
   =================================== */

/* Tablet: 2 columns - show only 2 images */
@media (min-width: 768px) and (max-width: 1023px) {
  .comparison-container {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }
  
  /* Hide third comparison on tablet - only show 2 images */
  .comparison-container .image-comparison:nth-child(3) {
    display: none;
  }
}

/* Mobile: 1 column */
@media (max-width: 767px) {
  .comparison-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    padding: 0 var(--spacing-md);
  }
  
  .comparison-container .image-comparison:nth-child(3) {
    max-width: 100%;
  }
  
  /* Hide 2nd and 3rd comparisons on mobile - only show first */
  .comparison-container .image-comparison:nth-child(2),
  .comparison-container .image-comparison:nth-child(3) {
    display: none;
  }
  
  .image-comparison {
    aspect-ratio: 3/4; /* Slightly less tall on mobile */
  }
  
  .image-comparison__handle {
    width: 48px;
    height: 48px;
    border-width: 3px;
    bottom: 15px;
  }
  
  .image-comparison__handle::before,
  .image-comparison__handle::after {
    width: 12px;
    height: 12px;
    border-width: 0 3px 3px 0;
  }
  
  .image-comparison__label {
    font-size: 0.65rem;
    padding: 4px 8px;
  }
}

/* Touch device improvements */
@media (hover: none) and (pointer: coarse) {
  .image-comparison {
    cursor: grab;
  }
  
  .image-comparison:active {
    cursor: grabbing;
  }
  
  .image-comparison__handle {
    width: 48px;
    height: 48px;
    bottom: 15px;
  }
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
  .image-comparison__handle {
    transition: none;
  }
}