/* =========================================================
   Modern Enhancements
   =========================================================
   Progressive enhancements for a modern, responsive, and
   professional feel. All features are non-breaking.
   ========================================================= */

/* ---------------------------------------------------------
   1. SMOOTH SCROLLING
   --------------------------------------------------------- */
html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---------------------------------------------------------
   2. FOCUS-VISIBLE (modern focus rings)
   --------------------------------------------------------- */
:focus:not(:focus-visible) {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--color-blue-500, #3b82f6);
  outline-offset: 2px;
  border-radius: 2px;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-blue-500, #3b82f6);
  outline-offset: 2px;
}

/* ---------------------------------------------------------
   3. CUSTOM SCROLLBAR
   --------------------------------------------------------- */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-gray-100, #f3f4f6);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: var(--color-gray-400, #9ca3af);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-gray-500, #6b7280);
}

/* Firefox */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--color-gray-400, #9ca3af) var(--color-gray-100, #f3f4f6);
}

/* ---------------------------------------------------------
   4. BACK-TO-TOP BUTTON
   --------------------------------------------------------- */
.back-to-top {
  position: fixed;
  bottom: 90px;
  right: 20px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-white, #fff);
  color: var(--color-gray-700, #374151);
  border: 1px solid var(--color-gray-200, #e5e7eb);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease, background-color 0.2s;
  z-index: 900;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-blue-500, #3b82f6);
  color: var(--color-white, #fff);
  border-color: var(--color-blue-500, #3b82f6);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
}

/* ---------------------------------------------------------
   5. ASPECT RATIO UTILITIES (prevents layout shift)
   --------------------------------------------------------- */
.aspect-square {
  aspect-ratio: 1 / 1;
}

.aspect-video {
  aspect-ratio: 16 / 9;
}

.aspect-product {
  aspect-ratio: 4 / 5;
}

.aspect-banner {
  aspect-ratio: 21 / 9;
}

/* Fallback for older browsers */
@supports not (aspect-ratio: 1 / 1) {
  .aspect-square {
    padding-bottom: 100%;
  }
  .aspect-video {
    padding-bottom: 56.25%;
  }
  .aspect-product {
    padding-bottom: 125%;
  }
}

/* ---------------------------------------------------------
   6. IMAGE LOADING FADE-IN
   --------------------------------------------------------- */
img {
  opacity: 1;
  transition: opacity 0.4s ease;
}

img[loading="lazy"] {
  opacity: 0;
}

img[loading="lazy"].loaded,
img[loading="lazy"]:not([src=""]) {
  opacity: 1;
}

/* ---------------------------------------------------------
   7. ENHANCED SKELETON (shimmer wave)
   --------------------------------------------------------- */
.skeleton-shimmer {
  background: linear-gradient(
    90deg,
    var(--color-gray-100, #f3f4f6) 0%,
    var(--color-gray-200, #e5e7eb) 50%,
    var(--color-gray-100, #f3f4f6) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius, 6px);
}

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

/* ---------------------------------------------------------
   8. GLASSMORPHISM UTILITIES
   --------------------------------------------------------- */
.glass {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.glass-dark {
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* ---------------------------------------------------------
   9. GRADIENT ACCENTS
   --------------------------------------------------------- */
.gradient-hero {
  background: linear-gradient(135deg, var(--color-blue-600, #2563eb) 0%, var(--color-blue-800, #1e40af) 100%);
}

.gradient-warm {
  background: linear-gradient(135deg, var(--primary, #ff6f00) 0%, var(--primary-dark, #e65100) 100%);
}

.gradient-subtle {
  background: linear-gradient(180deg, var(--color-gray-50, #f9fafb) 0%, var(--color-white, #fff) 100%);
}

.text-gradient {
  background: linear-gradient(135deg, var(--primary, #ff6f00), var(--color-blue-600, #2563eb));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------------------------------------------------------
   10. ENHANCED PRODUCT CARDS
   --------------------------------------------------------- */
.product-card {
  position: relative;
  overflow: hidden;
}

.product-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(0, 0, 0, 0.03) 100%);
  pointer-events: none;
  z-index: 1;
}

.product-card .product-image {
  overflow: hidden;
}

.product-card .product-image img {
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Badge positioning on cards */
.product-card .badge {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
}

/* ---------------------------------------------------------
   11. BUTTON MICRO-INTERACTIONS
   --------------------------------------------------------- */
button,
.add-to-cart-btn,
.checkout-btn,
.addToCart {
  position: relative;
  overflow: hidden;
}

button::after,
.add-to-cart-btn::after,
.checkout-btn::after,
.addToCart::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(255, 255, 255, 0.3) 0%, transparent 70%);
  opacity: 0;
  transform: scale(0);
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
}

button:active::after,
.add-to-cart-btn:active::after,
.checkout-btn:active::after,
.addToCart:active::after {
  opacity: 1;
  transform: scale(2);
  transition: opacity 0.1s ease, transform 0.1s ease;
}

/* ---------------------------------------------------------
   12. TOAST NOTIFICATION ENHANCEMENTS
   --------------------------------------------------------- */
#successToast,
#errorToast {
  transform: translateX(120%);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
}

#successToast.visible,
#errorToast.visible {
  transform: translateX(0);
}

#successToast {
  border-left: 4px solid var(--color-green-600, #16a34a);
}

#errorToast {
  border-left: 4px solid var(--color-red-600, #dc2626);
}

/* ---------------------------------------------------------
   13. STICKY SECTION HEADERS
   --------------------------------------------------------- */
.sticky-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* ---------------------------------------------------------
   14. SEARCH DROPDOWN STYLING
   --------------------------------------------------------- */
.search-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: var(--color-white, #fff);
  border: 1px solid var(--color-gray-200, #e5e7eb);
  border-radius: var(--radius-lg, 0.5rem);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  max-height: 400px;
  overflow-y: auto;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
}

.search-dropdown.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.search-dropdown-item {
  padding: 10px 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: background-color 0.15s ease;
}

.search-dropdown-item:hover,
.search-dropdown-item:focus {
  background-color: var(--color-gray-50, #f9fafb);
}

.search-dropdown-item img {
  width: 40px;
  height: 40px;
  object-fit: cover;
  border-radius: var(--radius, 6px);
}

/* ---------------------------------------------------------
   15. PAGINATION ENHANCEMENTS
   --------------------------------------------------------- */
.pagination-controls button {
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.pagination-controls button:not(.active-page):hover {
  background: var(--color-blue-50, #eff6ff);
  border-color: var(--color-blue-500, #3b82f6);
  color: var(--color-blue-600, #2563eb);
}

.pagination-controls button.active-page {
  background: var(--color-blue-600, #2563eb);
  border-color: var(--color-blue-700, #1d4ed8);
  color: white;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

/* ---------------------------------------------------------
   16. FOOTER ENHANCEMENTS
   --------------------------------------------------------- */
footer a {
  position: relative;
  display: inline-flex;
}

footer a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width 0.3s ease;
}

footer a:hover::after {
  width: 100%;
}

/* ---------------------------------------------------------
   17. PROMO TICKER ENHANCEMENTS
   --------------------------------------------------------- */
.promo-ticker {
  background: linear-gradient(90deg, var(--primary, #ff6f00), var(--primary-dark, #e65100));
  color: white;
  overflow: hidden;
  position: relative;
}

.promo-ticker::before,
.promo-ticker::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 60px;
  z-index: 2;
  pointer-events: none;
}

.promo-ticker::before {
  left: 0;
  background: linear-gradient(90deg, var(--primary, #ff6f00), transparent);
}

.promo-ticker::after {
  right: 0;
  background: linear-gradient(270deg, var(--primary, #ff6f00), transparent);
}

.promo-track {
  display: flex;
  align-items: center;
  gap: 2rem;
  animation: ticker 30s linear infinite;
  white-space: nowrap;
}

@keyframes ticker {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

.promo-badge {
  background: var(--color-white, #fff);
  color: var(--primary, #ff6f00);
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-left: 2rem;
}

/* ---------------------------------------------------------
   18. MODAL ENHANCEMENTS
   --------------------------------------------------------- */
#productModal {
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.modal-content {
  animation: modalIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* ---------------------------------------------------------
   19. EMPTY STATE ENHANCEMENTS
   --------------------------------------------------------- */
#noProductsMessage {
  animation: fadeInUp 0.5s ease;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------------------------------------------------------
   20. PRINT STYLES
   --------------------------------------------------------- */
@media print {
  .navbar,
  .promo-ticker,
  .whatsapp-btn,
  .back-to-top,
  #mobileNavToggle,
  #accountToggle,
  .pagination-controls,
  button,
  .add-to-cart-btn {
    display: none !important;
  }

  .product-card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ddd;
  }

  body {
    background: white;
    color: black;
  }

  a {
    text-decoration: none;
    color: black;
  }

  a[href]::after {
    content: ' (' attr(href) ')';
    font-size: 0.8em;
    color: #666;
  }
}

/* ---------------------------------------------------------
   21. CONTAINER QUERIES (for card components)
   --------------------------------------------------------- */
@supports (container-type: inline-size) {
  .product-card-container {
    container-type: inline-size;
    container-name: product;
  }

  @container product (max-width: 200px) {
    .product-card .product-name {
      font-size: 0.9rem;
    }
    .product-card .product-price {
      font-size: 0.85rem;
    }
  }

  @container product (min-width: 300px) {
    .product-card .product-name {
      font-size: 1.15rem;
    }
  }
}

/* ---------------------------------------------------------
   22. SELECTION COLOR
   --------------------------------------------------------- */
::selection {
  background: var(--color-blue-200, #bfdbfe);
  color: var(--color-blue-900, #1e3a8a);
}

/* ---------------------------------------------------------
   23. LOADING OVERLAY ENHANCEMENT
   --------------------------------------------------------- */
#loadingSpinner .bg-white {
  backdrop-filter: blur(8px);
  background: rgba(255, 255, 255, 0.9);
}