/**
 * Te Puo Website - Bijoux Page Styles
 * 
 * This file contains styles specific to the jewelry page (bijoux.html),
 * including collection sections, jewelry cards, loading states, and error messages.
 * The design incorporates spherical accents inspired by the dorodango technique.
 * 
 * Requirements: 4.5, 7.1, 7.2
 */

/* ============================================
   HEADER AND NAVIGATION
   ============================================ */

header {
  background-color: var(--color-bg-primary);
  border-bottom: 1px solid var(--color-sand);
  position: sticky;
  top: 0;
  z-index: var(--z-index-sticky);
  box-shadow: var(--shadow-sm);
}

.header-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.logo {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-earth-dark);
  margin: 0;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
  margin: 0;
  padding: 0;
}

.nav-link {
  color: var(--color-text-medium);
  font-weight: var(--font-weight-medium);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-small);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-accent);
  background-color: var(--color-sand);
  text-decoration: none;
}

.nav-link.active {
  color: var(--color-accent);
  background-color: var(--color-sand);
  font-weight: var(--font-weight-semibold);
}

/* ============================================
   MAIN CONTENT
   ============================================ */

main {
  min-height: calc(100vh - 200px);
  padding: var(--spacing-lg) var(--spacing-md);
  background-color: var(--color-bg-secondary);
}

/* ============================================
   PAGE HEADER
   ============================================ */

.page-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-md) 0;
}

.page-title {
  font-size: var(--font-size-4xl);
  color: var(--color-earth-dark);
  margin-bottom: var(--spacing-sm);
  position: relative;
  display: inline-block;
}

/* Spherical accent decoration under title */
.page-title::after {
  content: '';
  position: absolute;
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 8px;
  background: linear-gradient(90deg, 
    transparent 0%, 
    var(--color-accent) 20%, 
    var(--color-accent) 80%, 
    transparent 100%
  );
  border-radius: var(--border-radius-soft);
}

.page-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  max-width: 600px;
  margin: var(--spacing-md) auto 0;
  line-height: var(--line-height-relaxed);
}

/* ============================================
   LOADING STATE
   ============================================ */

.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl) var(--spacing-md);
  min-height: 400px;
}

.loading-spinner {
  width: 60px;
  height: 60px;
  border: 6px solid var(--color-sand);
  border-top-color: var(--color-accent);
  border-radius: var(--border-radius-sphere);
  animation: spin 1s linear infinite;
  margin-bottom: var(--spacing-md);
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.loading-text {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  font-weight: var(--font-weight-medium);
}

/* ============================================
   ERROR CONTAINER
   ============================================ */

.error-container {
  max-width: 600px;
  margin: var(--spacing-xl) auto;
  padding: var(--spacing-md);
}

.error-message {
  background-color: #FEF2F2;
  border: 2px solid #FCA5A5;
  border-left: 6px solid #DC2626;
  border-radius: var(--border-radius-medium);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-md);
}

.error-text {
  color: #991B1B;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-md);
  line-height: var(--line-height-relaxed);
}

.retry-button {
  background-color: var(--color-accent);
  color: var(--color-text-light);
  border: none;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-soft);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.retry-button:hover {
  background-color: var(--color-accent-dark);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.retry-button:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

/* ============================================
   COLLECTIONS CONTAINER
   ============================================ */

.collections-container {
  max-width: 1280px;
  margin: 0 auto;
}

/* ============================================
   EMPTY STATE
   ============================================ */

.empty-state {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-md);
  background-color: var(--color-bg-primary);
  border-radius: var(--border-radius-soft);
  box-shadow: var(--shadow-md);
  max-width: 600px;
  margin: var(--spacing-xl) auto;
}

.empty-state-text {
  font-size: var(--font-size-xl);
  color: var(--color-text-medium);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-sm);
}

.empty-state-subtext {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
}

/* ============================================
   COLLECTION SECTION
   ============================================ */

.collection-section {
  margin-bottom: var(--spacing-xl);
  background-color: var(--color-bg-primary);
  border-radius: var(--border-radius-soft);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  transition: box-shadow var(--transition-base);
}

.collection-section:hover {
  box-shadow: var(--shadow-lg);
}

.collection-section:last-child {
  margin-bottom: 0;
}

/* ============================================
   COLLECTION HEADER
   ============================================ */

.collection-header {
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--color-sand);
  position: relative;
}

/* Spherical accent decoration */
.collection-header::before {
  content: '';
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 16px;
  height: 16px;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
  border-radius: var(--border-radius-sphere);
  box-shadow: var(--shadow-sm);
}

.collection-title {
  font-size: var(--font-size-3xl);
  color: var(--color-earth-dark);
  margin-bottom: var(--spacing-sm);
  font-weight: var(--font-weight-bold);
}

.collection-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
  max-width: 800px;
  margin: 0;
}

/* ============================================
   JEWELRY GRID
   ============================================ */

.jewelry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

/* Responsive grid adjustments */
@media (min-width: 640px) {
  .jewelry-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
  }
}

@media (min-width: 1024px) {
  .jewelry-grid {
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  }
}

/* ============================================
   JEWELRY CARD
   ============================================ */

.jewelry-card {
  background-color: var(--color-bg-primary);
  border-radius: var(--border-radius-soft);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.jewelry-card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

/* ============================================
   JEWELRY IMAGE CONTAINER
   ============================================ */

.jewelry-image-container {
  position: relative;
  width: 100%;
  padding-top: 100%; /* 1:1 Aspect Ratio */
  background-color: var(--color-sand);
  overflow: hidden;
}

/* Spherical overlay effect on hover */
.jewelry-image-container::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: radial-gradient(circle, rgba(139, 111, 71, 0.2) 0%, transparent 70%);
  border-radius: var(--border-radius-sphere);
  transform: translate(-50%, -50%);
  transition: all var(--transition-slow);
  pointer-events: none;
}

.jewelry-card:hover .jewelry-image-container::after {
  width: 200%;
  height: 200%;
}

.jewelry-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

/* Lazy loading state - subtle blur effect */
.jewelry-image[loading="lazy"] {
  background-color: var(--color-sand);
}

.jewelry-card:hover .jewelry-image {
  transform: scale(1.05);
}

/* Image error state styling */
.jewelry-image[src*="data:image/svg"] {
  object-fit: contain;
  padding: var(--spacing-md);
}

/* ============================================
   JEWELRY CONTENT
   ============================================ */

.jewelry-content {
  padding: var(--spacing-md);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.jewelry-name {
  font-size: var(--font-size-xl);
  color: var(--color-earth-dark);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-xs);
  line-height: var(--line-height-tight);
}

.jewelry-description {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
  margin: 0;
  flex-grow: 1;
}

/* ============================================
   FOOTER
   ============================================ */

footer {
  background-color: var(--color-earth-dark);
  color: var(--color-text-light);
  padding: var(--spacing-lg) var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.footer-container {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.footer-section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-sand);
  margin-bottom: var(--spacing-xs);
}

.footer-text {
  font-size: var(--font-size-sm);
  color: var(--color-earth-light);
  line-height: var(--line-height-relaxed);
  margin: 0;
}

.footer-links,
.social-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.footer-link,
.social-link {
  color: var(--color-earth-light);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer-link:hover,
.social-link:hover {
  color: var(--color-sand);
  text-decoration: underline;
}

.footer-bottom {
  max-width: 1280px;
  margin: 0 auto;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-earth-medium);
  text-align: center;
}

.copyright {
  font-size: var(--font-size-sm);
  color: var(--color-earth-light);
  margin: 0;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

/* Small devices (landscape phones, 640px and up) */
@media (min-width: 640px) {
  .page-title {
    font-size: 3.5rem;
  }
  
  .collection-title {
    font-size: 2.75rem;
  }
  
  .header-container {
    padding: var(--spacing-md) var(--spacing-lg);
  }
  
  main {
    padding: var(--spacing-xl) var(--spacing-lg);
  }
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: 768px) {
  .nav-list {
    gap: var(--spacing-lg);
  }
  
  .page-header {
    margin-bottom: var(--spacing-xxl);
  }
  
  .collection-section {
    padding: var(--spacing-xl);
  }
}

/* Large devices (desktops, 1024px and up) */
@media (min-width: 1024px) {
  .page-title {
    font-size: 4rem;
  }
  
  .collection-title {
    font-size: 3rem;
  }
  
  .jewelry-content {
    padding: var(--spacing-lg);
  }
}

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

/* Focus styles for keyboard navigation */
.nav-link:focus-visible,
.retry-button:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

.jewelry-card:focus-within {
  outline: 3px solid var(--color-accent);
  outline-offset: 4px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .jewelry-card {
    border: 2px solid var(--color-earth-dark);
  }
  
  .collection-header {
    border-bottom-width: 3px;
  }
}

/* Reduced motion for accessibility */
@media (prefers-reduced-motion: reduce) {
  .jewelry-card,
  .jewelry-image,
  .loading-spinner,
  .retry-button,
  .jewelry-image-container::after {
    animation: none;
    transition: none;
  }
  
  .jewelry-card:hover {
    transform: none;
  }
  
  .jewelry-card:hover .jewelry-image {
    transform: none;
  }
}

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

@media print {
  header,
  footer,
  .loading-state,
  .error-container,
  .retry-button {
    display: none;
  }
  
  .jewelry-card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid var(--color-earth-medium);
  }
  
  .collection-section {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid var(--color-earth-medium);
    margin-bottom: var(--spacing-md);
  }
}