/* ===================================
   Component Styles
   =================================== */

/* Loading Screen */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--bg-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-light);
  border-top: 3px solid var(--primary-color);
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
  margin-bottom: var(--spacing-lg);
}

/* ===================================
   Header & Navigation
   =================================== */

.header {
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-primary);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  backdrop-filter: blur(8px);
  background-color: rgba(255, 255, 255, 0.95);
}

.nav {
  width: 100%;
}

.nav-container {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

/* Logo */
.nav-logo {
  flex-shrink: 0;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  color: var(--text-primary);
  font-weight: var(--font-semibold);
  font-size: var(--text-lg);
  transition: var(--transition-all);
}

.logo-link:hover {
  color: var(--primary-color);
  text-decoration: none;
}

.logo-img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.logo-text {
  font-weight: var(--font-bold);
  color: var(--primary-color);
}

/* Navigation Menu */
.nav-menu {
  display: none;
  align-items: center;
  gap: var(--spacing-xl);
  list-style: none;
  margin: 0;
  padding: 0;
}

@media (min-width: 768px) {
  .nav-menu {
    display: flex;
  }
}

.nav-item {
  position: relative;
}

.nav-link {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: var(--font-medium);
  border-radius: var(--radius-md);
  transition: var(--transition-all);
  position: relative;
}

.nav-link:hover {
  color: var(--primary-color);
  background-color: var(--bg-secondary);
  text-decoration: none;
}

.nav-link.active {
  color: var(--primary-color);
  background-color: var(--bg-secondary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background-color: var(--primary-color);
  border-radius: var(--radius-full);
}

/* Navigation Actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

/* Language Selector */
.language-selector {
  position: relative;
}

.language-toggle {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-weight: var(--font-medium);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: var(--transition-all);
}

.language-toggle:hover {
  background-color: var(--bg-tertiary);
  border-color: var(--border-secondary);
}

.language-current {
  font-weight: var(--font-semibold);
}

.language-arrow {
  transition: transform var(--transition-fast);
}

.language-selector:hover .language-arrow {
  transform: rotate(180deg);
}

.language-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: var(--spacing-xs);
  background-color: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  list-style: none;
  padding: var(--spacing-sm);
  min-width: 140px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: var(--transition-all);
  z-index: var(--z-dropdown);
}

.language-selector:hover .language-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.language-option {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: var(--transition-all);
}

.language-option:hover {
  color: var(--primary-color);
  background-color: var(--bg-secondary);
  text-decoration: none;
}

.language-option.active {
  color: var(--primary-color);
  background-color: var(--bg-secondary);
  font-weight: var(--font-medium);
}

/* Cart Toggle */
.cart-toggle {
  position: relative;
  padding: var(--spacing-sm);
  color: var(--text-secondary);
  transition: var(--transition-all);
}

.cart-toggle:hover {
  color: var(--primary-color);
}

.cart-icon {
  width: 24px;
  height: 24px;
  transition: transform var(--transition-fast);
}

.cart-toggle:hover .cart-icon {
  transform: scale(1.1);
}

.cart-count {
  position: absolute;
  top: 0;
  right: 0;
  background-color: var(--secondary-color);
  color: var(--text-inverse);
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  padding: 2px 6px;
  border-radius: var(--radius-full);
  min-width: 18px;
  text-align: center;
  transform: translate(25%, -25%);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 32px;
  height: 32px;
  padding: var(--spacing-xs);
}

@media (min-width: 768px) {
  .mobile-menu-toggle {
    display: none;
  }
}

.hamburger-line {
  width: 20px;
  height: 2px;
  background-color: var(--text-primary);
  margin: 2px 0;
  transition: var(--transition-all);
}

.mobile-menu-toggle:hover .hamburger-line {
  background-color: var(--primary-color);
}

/* ===================================
   Buttons
   =================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  line-height: 1;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-all);
  text-decoration: none;
  border: 1px solid transparent;
  min-height: 40px;
  white-space: nowrap;
}

.btn:focus {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

/* Primary Button */
.btn-primary {
  background-color: var(--primary-color);
  color: var(--text-inverse);
  border-color: var(--primary-color);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
  color: var(--text-inverse);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

/* Secondary/Outline Button */
.btn-outline {
  background-color: transparent;
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-outline:hover:not(:disabled) {
  background-color: var(--primary-color);
  color: var(--text-inverse);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

.btn-outline:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

/* Ghost Button */
.btn-ghost {
  background-color: transparent;
  color: var(--text-secondary);
  border-color: transparent;
}

.btn-ghost:hover:not(:disabled) {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  text-decoration: none;
}

/* Button Sizes */
.btn-sm {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--text-xs);
  min-height: 32px;
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--text-base);
  min-height: 48px;
}

/* ===================================
   Hero Section
   =================================== */

.hero {
  padding: var(--spacing-6xl) 0 var(--spacing-5xl);
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%23e5e7eb" fill-opacity="0.3"><circle cx="30" cy="30" r="2"/></g></svg>') repeat;
  opacity: 0.5;
  z-index: 0;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-4xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

@media (min-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr 1fr;
  }
}

.hero-content {
  text-align: center;
}

@media (min-width: 1024px) {
  .hero-content {
    text-align: left;
  }
}

.hero-title {
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  margin-bottom: var(--spacing-xl);
  color: var(--text-primary);
}

@media (min-width: 768px) {
  .hero-title {
    font-size: var(--text-5xl);
  }
}

@media (min-width: 1024px) {
  .hero-title {
    font-size: var(--text-6xl);
  }
}

.hero-description {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--spacing-3xl);
  max-width: 600px;
}

@media (min-width: 1024px) {
  .hero-description {
    font-size: var(--text-xl);
  }
}

.hero-actions {
  display: flex;
  gap: var(--spacing-lg);
  justify-content: center;
  flex-wrap: wrap;
}

@media (min-width: 1024px) {
  .hero-actions {
    justify-content: flex-start;
  }
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-img {
  width: 100%;
  max-width: 500px;
  height: auto;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  object-fit: cover;
}

/* ===================================
   Section Styles
   =================================== */

.section-title {
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  text-align: center;
  margin-bottom: var(--spacing-4xl);
  color: var(--text-primary);
}

@media (min-width: 768px) {
  .section-title {
    font-size: var(--text-4xl);
  }
}

/* Categories Section */
.categories {
  padding: var(--spacing-5xl) 0;
  background-color: var(--bg-primary);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
}

.category-card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  text-align: center;
  transition: var(--transition-all);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  transform: translateY(-100%);
  transition: transform var(--transition-normal);
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-secondary);
  text-decoration: none;
}

.category-card:hover::before {
  transform: translateY(0);
}

.category-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-secondary);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
}

.category-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.category-title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.category-description {
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

/* ===================================
   Search and Filter
   =================================== */

.search-filter {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-3xl);
  padding: var(--spacing-lg);
  background-color: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-primary);
}

@media (min-width: 768px) {
  .search-filter {
    flex-direction: row;
    align-items: center;
  }
}

.search-box {
  flex: 1;
  position: relative;
}

.search-input {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg) var(--spacing-md) 48px;
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  background-color: var(--bg-primary);
  transition: var(--transition-all);
}

.search-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.search-input::placeholder {
  color: var(--text-muted);
}

.search-btn {
  position: absolute;
  left: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: var(--spacing-sm);
  transition: var(--transition-all);
}

.search-btn:hover {
  color: var(--primary-color);
}

.filter-controls {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.filter-select {
  padding: var(--spacing-md) var(--spacing-lg);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  background-color: var(--bg-primary);
  font-size: var(--text-sm);
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition-all);
  min-width: 160px;
}

.filter-select:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

/* ===================================
   Products Grid
   =================================== */

.featured-products {
  padding: var(--spacing-5xl) 0;
  background-color: var(--bg-secondary);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-3xl);
}

/* Loading Placeholder */
.loading-placeholder {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.skeleton-card {
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-lg);
  height: 400px;
  position: relative;
  overflow: hidden;
}

.skeleton-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.4),
    transparent
  );
  animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
  0% {
    left: -100%;
  }
  100% {
    left: 200%;
  }
}

/* Load More */
.load-more-container {
  text-align: center;
}

/* ===================================
   About Section
   =================================== */

.about {
  padding: var(--spacing-5xl) 0;
  background-color: var(--bg-primary);
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.about-description {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--spacing-4xl);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
}

.feature {
  text-align: center;
  padding: var(--spacing-xl);
  background-color: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-primary);
  transition: var(--transition-all);
}

.feature:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-secondary);
}

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-primary);
  border-radius: var(--radius-xl);
  color: var(--primary-color);
  border: 2px solid var(--border-light);
}

.feature-title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.feature-description {
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

/* ===================================
   Contact Section
   =================================== */

.contact {
  padding: var(--spacing-5xl) 0;
  background-color: var(--bg-secondary);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-4xl);
  max-width: 1000px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .contact-content {
    grid-template-columns: 1fr 1fr;
  }
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.contact-item h3 {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.contact-item p {
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

/* Contact Form */
.contact-form {
  background-color: var(--bg-primary);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-primary);
  box-shadow: var(--shadow-sm);
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: var(--font-medium);
  color: var(--text-primary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  background-color: var(--bg-primary);
  transition: var(--transition-all);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* ===================================
   Footer
   =================================== */

.footer {
  background-color: var(--bg-dark);
  color: var(--text-inverse);
  padding: var(--spacing-4xl) 0 var(--spacing-lg);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-3xl);
}

.footer-section h3,
.footer-section h4 {
  font-weight: var(--font-semibold);
  margin-bottom: var(--spacing-lg);
  color: var(--text-inverse);
}

.footer-section ul {
  list-style: none;
}

.footer-section li {
  margin-bottom: var(--spacing-sm);
}

.footer-section a {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition-all);
}

.footer-section a:hover {
  color: var(--text-inverse);
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid var(--border-secondary);
  padding-top: var(--spacing-lg);
  text-align: center;
  color: var(--text-muted);
  font-size: var(--text-sm);
}