/* 
 * Optimized Lightbox - Mobile First
 * Changes: replace raw colors with tokens, add focus-visible outlines,
 * transition hygiene, keep visuals identical.
 */

.custom-lightbox {
  position: fixed;
  inset: 0;
  z-index: 1050;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-md);
}

.lightbox-overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(5px);
}

.lightbox-content {
  position: relative;
  z-index: 1001;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.lightbox-image-container {
  position: relative;
  max-width: 100%;
  max-height: 70vh;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.lightbox-image {
  max-width: 100%;
  max-height: 70vh;
  object-fit: contain;
  opacity: 0;
  transition: opacity var(--transition-normal);
  contain: content;
}

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

.lightbox-caption-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

.lightbox-caption {
  color: var(--text-light);
  text-align: center;
  font-size: var(--fs-base);
  padding: 0 var(--spacing-md);
  max-width: 80%;
  margin-bottom: var(--spacing-sm);
}

.lightbox-counter {
  color: var(--text-light);
  font-size: var(--fs-sm);
}

.lightbox-close {
  position: absolute;
  top: -40px;
  right: 0;
  background: none;
  border: none;
  color: var(--text-light);
  font-size: 2rem;
  cursor: pointer;
  padding: var(--spacing-xs);
  z-index: 1002;
}
.lightbox-close:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0, 0, 0, 0.5);
  border: none;
  color: var(--text-light);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  z-index: 1002;
  transition: background-color var(--transition-fast),
    transform var(--transition-fast);
}
.lightbox-nav:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
}

.lightbox-prev {
  left: var(--spacing-md);
}
.lightbox-next {
  right: var(--spacing-md);
}

.lightbox-keyboard-help {
  position: absolute;
  bottom: var(--spacing-md);
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.8);
  color: var(--text-light);
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  max-width: 400px;
  display: none;
}

.lightbox-keyboard-help.visible {
  display: block;
}

.lightbox-keyboard-help h3 {
  margin-top: 0;
  color: var(--text-light);
}

.lightbox-keyboard-help ul {
  padding-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.lightbox-keyboard-help kbd {
  background-color: var(--color-gray-300);
  color: var(--text-primary);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: monospace;
  border: 1px solid var(--color-gray-300);
}

.help-close {
  background: var(--color-secondary);
  color: var(--text-light);
  border: none;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color var(--transition-fast),
    transform var(--transition-fast);
}
.help-close:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
}

/* Tablet styles */
@media (min-width: 768px) {
  .custom-lightbox {
    padding: var(--spacing-xl);
  }
  .lightbox-nav {
    width: 50px;
    height: 50px;
  }
  .lightbox-prev {
    left: var(--spacing-xl);
  }
  .lightbox-next {
    right: var(--spacing-xl);
  }
  .lightbox-caption {
    font-size: var(--fs-lg);
  }
  .lightbox-counter {
    font-size: var(--fs-base);
  }
}