/**
 * EPSS Loyverse Commerce - Product Gallery Styles
 * Modern, responsive gallery with lightbox and zoom
 * Brand color: #2e7d32 (green)
 * @version 1.0.0
 */

/* ============================================
   Gallery Container
   ============================================ */

.epss-product-gallery {
  position: relative;
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================
   Main Image
   ============================================ */

.epss-gallery-main {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  background-color: #f5f5f5;
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 1rem;
}

.epss-main-image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  cursor: pointer;
  transition: opacity 0.3s ease;
  display: block;
}

.epss-main-image:focus-visible {
  outline: 3px solid #2e7d32;
  outline-offset: 2px;
}

/* ============================================
   Zoom Lens (Desktop Hover)
   ============================================ */

.epss-zoom-lens {
  position: absolute;
  width: 150px;
  height: 150px;
  border: 2px solid #2e7d32;
  border-radius: 50%;
  pointer-events: none;
  display: none;
  background-size: 200%;
  background-repeat: no-repeat;
  z-index: 10;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* ============================================
   Thumbnail Strip
   ============================================ */

.epss-gallery-thumbnails {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 0.5rem 0;
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: #2e7d32 #e0e0e0;
}

.epss-gallery-thumbnails::-webkit-scrollbar {
  height: 6px;
}

.epss-gallery-thumbnails::-webkit-scrollbar-track {
  background: #e0e0e0;
  border-radius: 3px;
}

.epss-gallery-thumbnails::-webkit-scrollbar-thumb {
  background: #2e7d32;
  border-radius: 3px;
}

.epss-gallery-thumbnails::-webkit-scrollbar-thumb:hover {
  background: #1b5e20;
}

/* ============================================
   Thumbnails
   ============================================ */

.epss-thumbnail {
  flex: 0 0 60px;
  width: 60px;
  height: 60px;
  border: 2px solid transparent;
  border-radius: 4px;
  overflow: hidden;
  cursor: pointer;
  background-color: #f5f5f5;
  transition: all 0.3s ease;
  padding: 0;
}

.epss-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.epss-thumbnail:hover {
  border-color: #66bb6a;
  transform: translateY(-2px);
  box-shadow: 0 2px 8px rgba(46, 125, 50, 0.2);
}

.epss-thumbnail.active {
  border-color: #2e7d32;
  border-width: 4px;
  box-shadow: 0 2px 8px rgba(46, 125, 50, 0.4);
}

.epss-thumbnail:focus-visible {
  outline: 3px solid #2e7d32;
  outline-offset: 2px;
  border-color: #2e7d32;
}

/* ============================================
   Lightbox Overlay
   ============================================ */

.epss-lightbox {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.92);
  z-index: 999999;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: epssLightboxFadeIn 0.3s ease;
}

@keyframes epssLightboxFadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* ============================================
   Lightbox Controls
   ============================================ */

.epss-lightbox-close,
.epss-lightbox-prev,
.epss-lightbox-next {
  position: absolute;
  background-color: rgba(46, 125, 50, 0.9);
  color: #fff;
  border: none;
  cursor: pointer;
  font-size: 2rem;
  line-height: 1;
  padding: 0.5rem;
  transition: all 0.3s ease;
  z-index: 1000001;
}

.epss-lightbox-close:hover,
.epss-lightbox-prev:hover,
.epss-lightbox-next:hover {
  background-color: #2e7d32;
  transform: scale(1.1);
}

.epss-lightbox-close:focus-visible,
.epss-lightbox-prev:focus-visible,
.epss-lightbox-next:focus-visible {
  outline: 3px solid #66bb6a;
  outline-offset: 2px;
}

.epss-lightbox-close {
  top: 1rem;
  right: 1rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  font-size: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.epss-lightbox-prev,
.epss-lightbox-next {
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

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

.epss-lightbox-prev:hover {
  transform: translateY(-50%) translateX(-4px);
}

.epss-lightbox-next:hover {
  transform: translateY(-50%) translateX(4px);
}

/* ============================================
   Lightbox Counter
   ============================================ */

.epss-lightbox-counter {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  background-color: rgba(46, 125, 50, 0.9);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 600;
  z-index: 1000001;
  letter-spacing: 0.5px;
}

/* ============================================
   Lightbox Image Container
   ============================================ */

.epss-lightbox-image-container {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4rem 1rem 4rem;
  z-index: 1000000;
}

.epss-lightbox-image {
  max-width: 90%;
  max-height: 90vh;
  object-fit: contain;
  transition: opacity 0.3s ease, transform 0.3s ease;
  user-select: none;
  -webkit-user-drag: none;
}

/* ============================================
   Mobile Responsive
   ============================================ */

@media (max-width: 768px) {
  .epss-gallery-thumbnails {
    gap: 0.375rem;
  }

  .epss-thumbnail {
    flex: 0 0 50px;
    width: 50px;
    height: 50px;
  }

  .epss-lightbox-close {
    top: 0.5rem;
    right: 0.5rem;
    width: 40px;
    height: 40px;
    font-size: 2rem;
  }

  .epss-lightbox-prev,
  .epss-lightbox-next {
    width: 40px;
    height: 40px;
    font-size: 1.5rem;
  }

  .epss-lightbox-prev {
    left: 0.5rem;
  }

  .epss-lightbox-next {
    right: 0.5rem;
  }

  .epss-lightbox-counter {
    bottom: 0.5rem;
    font-size: 0.75rem;
    padding: 0.375rem 0.75rem;
  }

  .epss-lightbox-image-container {
    padding: 3rem 0.5rem 3rem;
  }

  .epss-lightbox-image {
    max-width: 95%;
    max-height: 85vh;
  }
}

/* ============================================
   Accessibility - Reduced Motion
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  .epss-main-image,
  .epss-thumbnail,
  .epss-lightbox-close,
  .epss-lightbox-prev,
  .epss-lightbox-next,
  .epss-lightbox-image {
    transition: none;
  }

  .epss-lightbox {
    animation: none;
  }

  .epss-gallery-thumbnails {
    scroll-behavior: auto;
  }
}

/* ============================================
   Print Styles
   ============================================ */

@media print {
  .epss-gallery-thumbnails,
  .epss-zoom-lens,
  .epss-lightbox-close,
  .epss-lightbox-prev,
  .epss-lightbox-next,
  .epss-lightbox-counter {
    display: none !important;
  }

  .epss-main-image {
    cursor: default;
  }

  .epss-lightbox {
    background-color: #fff;
  }

  .epss-lightbox-image {
    max-width: 100%;
    max-height: 100%;
  }
}

/* ============================================
   Focus Visible Polyfill Support
   ============================================ */

.epss-thumbnail:focus:not(:focus-visible) {
  outline: none;
}

.epss-main-image:focus:not(:focus-visible) {
  outline: none;
}

.epss-lightbox-close:focus:not(:focus-visible),
.epss-lightbox-prev:focus:not(:focus-visible),
.epss-lightbox-next:focus:not(:focus-visible) {
  outline: none;
}

/* ============================================
   Loading State
   ============================================ */

.epss-main-image[data-src]:not([src]),
.epss-thumbnail img[data-src]:not([src]) {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: epssLoadingShimmer 1.5s infinite;
}

@keyframes epssLoadingShimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* ============================================
   High Contrast Mode
   ============================================ */

@media (prefers-contrast: high) {
  .epss-thumbnail.active {
    border-width: 6px;
  }

  .epss-lightbox {
    background-color: #000;
  }

  .epss-lightbox-close,
  .epss-lightbox-prev,
  .epss-lightbox-next,
  .epss-lightbox-counter {
    background-color: #2e7d32;
  }
}

/* ============================================
   Dark Mode Support
   ============================================ */

@media (prefers-color-scheme: dark) {
  .epss-gallery-main,
  .epss-thumbnail {
    background-color: #1a1a1a;
  }

  .epss-gallery-thumbnails::-webkit-scrollbar-track {
    background: #2a2a2a;
  }
}

/* ============================================
   Touch Device Optimizations
   ============================================ */

@media (hover: none) and (pointer: coarse) {
  .epss-thumbnail:hover {
    transform: none;
  }

  .epss-thumbnail:active {
    transform: scale(0.95);
  }

  .epss-lightbox-close:hover,
  .epss-lightbox-prev:hover,
  .epss-lightbox-next:hover {
    transform: translateY(-50%);
  }

  .epss-lightbox-close:hover {
    transform: none;
  }

  .epss-lightbox-close:active,
  .epss-lightbox-prev:active,
  .epss-lightbox-next:active {
    opacity: 0.8;
  }
}

/* ============================================
   Landscape Mobile
   ============================================ */

@media (max-width: 768px) and (orientation: landscape) {
  .epss-lightbox-image-container {
    padding: 2rem 0.5rem;
  }

  .epss-lightbox-image {
    max-height: 80vh;
  }

  .epss-lightbox-counter {
    bottom: 0.25rem;
  }
}

/* ============================================
   Large Screens
   ============================================ */

@media (min-width: 1200px) {
  .epss-product-gallery {
    max-width: 700px;
  }

  .epss-thumbnail {
    flex: 0 0 80px;
    width: 80px;
    height: 80px;
  }

  .epss-zoom-lens {
    width: 200px;
    height: 200px;
  }
}

/* ============================================
   RTL Support
   ============================================ */

[dir="rtl"] .epss-lightbox-close {
  right: auto;
  left: 1rem;
}

[dir="rtl"] .epss-lightbox-prev {
  left: auto;
  right: 1rem;
}

[dir="rtl"] .epss-lightbox-next {
  right: auto;
  left: 1rem;
}

/* ============================================
   Graceful Degradation (No JS)
   ============================================ */

.no-js .epss-zoom-lens,
.no-js .epss-lightbox {
  display: none !important;
}

.no-js .epss-main-image {
  cursor: default;
}