/* ========================================
   Unified Navigation Component Styles
   Component: UnifiedNavigation
   Version: 1.0.0

   Part of: unify-navigation-to-image-area OpenSpec change
   Spec: openspec/changes/unify-navigation-to-image-area/specs/unified-navigation/spec.md
   ======================================== */

/* ==================== WRAPPER CONTAINER ==================== */

.unified-navigation-wrapper {
  position: relative;
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
}

/* ==================== OUTER LAYER: ARTWORK NAVIGATION ==================== */

.artwork-navigation {
  position: absolute;
  top: var(--spacing-md);
  left: var(--spacing-md);
  right: var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  background: rgba(255, 255, 255, 0.75);
  border-radius: 6px;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 10;
}

/* Artwork Navigation Buttons */
.artwork-nav-button {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 6px 12px;
  font-size: 0.85rem;
  font-family: var(--font-sans);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.7);
  border: 2px solid rgba(45, 45, 45, 0.4);
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  will-change: backdrop-filter;
}

.artwork-nav-button:hover {
  background: rgba(0, 0, 0, 0.85);
  color: var(--color-bg);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.artwork-nav-button:active {
  transform: translateY(0);
}

.artwork-nav-button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.artwork-nav-button:disabled:hover {
  background: rgba(255, 255, 255, 0.7);
  color: var(--color-text);
}

/* Browser fallback for unsupported backdrop-filter */
@supports not (backdrop-filter: blur()) {
  .artwork-nav-button {
    background: rgba(255, 255, 255, 0.85);
  }

  .artwork-nav-button:hover {
    background: rgba(0, 0, 0, 0.9);
  }
}

/* Button icon (SVG arrows) */
.artwork-nav-button svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

/* Button text (English-only) */
.artwork-nav-button .button-text {
  font-size: 1rem;
  line-height: 1.2;
}

/* Artwork Indicator (X of 4) */
.artwork-indicator {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 4px 10px;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: var(--weight-semibold);
  color: var(--color-text-light);
  white-space: nowrap;
  background: rgba(255, 255, 255, 0.6);
  border-radius: 4px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.artwork-indicator .current-index {
  font-size: 1.1rem;
  font-weight: var(--weight-bold);
  color: var(--color-text);
}

/* Browser fallback for indicator */
@supports not (backdrop-filter: blur()) {
  .artwork-indicator {
    background: rgba(255, 255, 255, 0.75);
  }
}

/* ==================== INNER LAYER: IMAGE DISPLAY CONTAINER ==================== */

.image-display-container {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-radius: 8px;
  background: var(--color-bg-alt, #f5f5f5);
}

/* Image carousel wrapper (existing ArtworkImageCarousel component) */
.image-display-container .carousel-wrapper {
  width: 100%;
  height: 100%;
}

/* ==================== RESPONSIVE BREAKPOINTS ==================== */

/* Tablet (768px - 1023px) */
@media (max-width: 1023px) {
  .artwork-navigation {
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
  }

  .artwork-nav-button {
    padding: 6px 14px;
    font-size: 0.85rem;
  }

  .artwork-nav-button .button-text {
    font-size: 0.85rem;
  }

  .artwork-indicator {
    font-size: 0.85rem;
    padding: 5px 10px;
  }
}

/* Mobile (<768px) */
@media (max-width: 767px) {
  .unified-navigation-wrapper {
    gap: var(--spacing-sm);
  }

  .artwork-navigation {
    flex-wrap: nowrap;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
  }

  .artwork-nav-button {
    padding: 12px;
    font-size: 0.85rem;
    gap: var(--spacing-xs);
  }

  .artwork-nav-button .button-text {
    font-size: 0.85rem;
  }

  .artwork-indicator {
    font-size: 0.75rem;
    padding: 4px 8px;
  }

  .artwork-indicator .current-index {
    font-size: 0.9rem;
  }
}

/* ==================== ANIMATIONS ==================== */

/* Fade transition for artwork changes */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

.unified-navigation-wrapper.transitioning .image-display-container {
  animation: fadeOut 150ms ease-out forwards;
}

.unified-navigation-wrapper:not(.transitioning) .image-display-container {
  animation: fadeIn 300ms ease-in forwards;
}

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
  .artwork-nav-button {
    transition: none;
  }

  .artwork-nav-button:hover {
    transform: none;
  }

  .unified-navigation-wrapper.transitioning .image-display-container,
  .unified-navigation-wrapper:not(.transitioning) .image-display-container {
    animation: none;
  }
}

/* ==================== ACCESSIBILITY ==================== */

/* High contrast mode support */
@media (prefers-contrast: more) {
  .artwork-nav-button {
    border-width: 3px;
    font-weight: var(--weight-bold);
  }

  .artwork-indicator {
    font-weight: var(--weight-bold);
  }
}

/* Focus visible styles */
.artwork-nav-button:focus-visible {
  outline: 3px solid var(--color-text);
  outline-offset: 4px;
}

/* ==================== PRINT STYLES ==================== */

@media print {
  .artwork-navigation {
    display: none; /* Hide navigation controls in print */
  }
}