/* ==========================================================================
   DEVSTUDIO — COMPREHENSIVE RESPONSIVE ADAPTATION
   Breakpoints: 1440px, 1280px, 1024px, 768px, 430px, 390px, 320px
   ========================================================================== */

/* 1. Large Displays (1440px and above) */
@media (min-width: 1440px) {
  :root {
    --ds-container-max: 1400px;
    --ds-container-padding: 32px;
  }
}

/* 2. Standard Laptops & Desktops (Under 1280px) */
@media (max-width: 1280px) {
  .nav-list {
    gap: 20px;
  }
  
  .category-tiles-grid {
    grid-template-columns: repeat(5, 1fr);
    gap: 12px;
  }

  .product-cards-grid {
    gap: 18px;
  }
}

/* 3. Tablets & Small Laptops (Under 1024px) */
@media (max-width: 1024px) {
  /* Header & Navigation */
  .desktop-navigation {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .announcement-content {
    font-size: 0.75rem;
  }

  /* Hero Section */
  .hero-slider-section {
    min-height: 540px;
  }

  .hero-slide-content {
    grid-template-columns: 1fr;
    gap: 36px;
    text-align: center;
  }

  .hero-text-col {
    align-items: center;
  }

  .hero-description {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-cta-group {
    justify-content: center;
  }

  .hero-image-placeholder {
    max-width: 440px;
    margin: 0 auto;
  }

  /* Category Grid: 3 columns */
  .category-tiles-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Products Grid: 2 columns */
  .product-cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Promo Banners: Stack */
  .promo-grid-dual {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* Service Pillars: 2 columns */
  .services-pillars-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  /* Stores Teaser: Stack */
  .stores-teaser-card {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  /* Footer: 2 columns */
  .footer-columns-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 36px;
  }
}

/* 4. Tablets & Large Phones (Under 768px) */
@media (max-width: 768px) {
  :root {
    --ds-container-padding: 16px;
    --ds-header-height: 58px;
    --ds-announcement-height: 36px;
  }

  .announcement-badge {
    display: none;
  }

  .announcement-content span:last-child {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 85vw;
  }

  /* Category Grid: 2 columns */
  .category-tiles-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .category-tile {
    min-height: 150px;
    padding: 20px 16px;
  }

  /* Product Filter Tabs */
  .section-header-compact {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .section-filter-tabs {
    width: 100%;
    overflow-x: auto;
    padding: 4px;
    -webkit-overflow-scrolling: touch;
  }

  .filter-tab {
    flex: 1;
    text-align: center;
    white-space: nowrap;
  }

  /* Search Modal */
  .search-modal-backdrop {
    padding-top: 20px;
  }

  .search-modal-dialog {
    margin: 0 8px;
    max-height: 85vh;
  }

  /* Newsletter Form */
  .newsletter-input-group {
    flex-direction: column;
    width: 100%;
  }

  .newsletter-input-group .btn {
    width: 100%;
  }

  /* Footer Bottom */
  .footer-bottom-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .footer-compliance-badges {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}

/* 5. Mobile Flagships & Standard Screens (Under 430px / iPhone Pro Max) */
@media (max-width: 430px) {
  .hero-slide {
    padding: 48px 0 64px 0;
  }

  .hero-title {
    font-size: 2.125rem;
  }

  .hero-cta-group .btn {
    width: 100%;
  }

  .product-cards-grid {
    grid-template-columns: 1fr;
  }

  .category-tiles-grid {
    grid-template-columns: 1fr;
  }

  .services-pillars-grid {
    grid-template-columns: 1fr;
  }

  .footer-columns-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .cart-drawer {
    width: 100%;
    max-width: 100%;
  }

  .product-card-actions {
    grid-template-columns: 1fr;
  }
}

/* 6. Compact Mobile (Under 375px / 320px) */
@media (max-width: 375px) {
  .brand-logo-text {
    font-size: 1.125rem;
  }

  .header-actions {
    gap: 2px;
  }

  .header-action-btn {
    width: 34px;
    height: 34px;
  }

  .hero-price-tag .price-value {
    font-size: 1.35rem;
  }

  .promo-banner-card {
    padding: 20px 14px;
  }
}

/* ==========================================================================
   7. UNIVERSAL CROSS-DEVICE VISIBILITY & RESPONSIVENESS ENHANCEMENTS
   Ensures all layouts, grids, payment flows, and product cards scale flawlessly
   across 320px mobile, phablets, tablets, laptops, and ultra-wide screens.
   ========================================================================== */

/* Universal Layout & Overflow Protection */
html, body {
  overflow-x: hidden;
  max-width: 100vw;
  -webkit-text-size-adjust: 100%;
}

img, svg, video, canvas {
  max-width: 100%;
  height: auto;
}

button, input, select, textarea {
  font-family: inherit;
}

/* Ensure clean grid sizing across intermediate tablet & laptop screens */
@media (min-width: 1200px) {
  .catalog-products-grid,
  .wishlist-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 1100px) and (min-width: 769px) {
  .catalog-products-grid,
  .wishlist-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .iphone-lineup-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Tablet & iPad Pro Range (<= 1024px) */
@media (max-width: 1024px) {
  .payment-container-grid,
  .simple-checkout-grid,
  .cart-page-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .payment-sidebar-column,
  .checkout-sidebar-column,
  .cart-summary-sidebar {
    position: static;
  }

  .catalog-layout-container {
    grid-template-columns: 1fr;
  }

  .pdp-hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

/* Mobile & Phablet Range (<= 768px) */
@media (max-width: 768px) {
  .iphone-lineup-grid,
  .catalog-products-grid,
  .wishlist-grid {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
  }

  .qr-presentation-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    text-align: center;
  }

  .qr-visual-box {
    margin: 0 auto;
  }

  .upi-id-row {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    text-align: center;
  }

  .upi-vpa-string {
    word-break: break-all;
    font-size: 0.875rem;
  }

  .payable-amount-highlight {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .cart-table-header {
    display: none;
  }

  .cart-table-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .cart-row-item {
    gap: 12px;
  }

  .cart-row-thumb {
    width: 52px;
    height: 52px;
  }

  .pdp-purchase-actions {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .pdp-qty-selector {
    width: 100%;
    justify-content: center;
  }

  .pdp-btn-add,
  .pdp-btn-buynow {
    width: 100%;
  }

  .specs-table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    width: 100%;
  }

  .specs-table th,
  .specs-table td {
    padding: 10px 12px;
    font-size: 0.8125rem;
  }
}

/* Small Smartphone Range (<= 480px / 430px / 390px / 360px / 320px) */
@media (max-width: 480px) {
  :root {
    --ds-container-padding: 14px;
    --ds-header-height: 54px;
  }

  .iphone-lineup-grid,
  .catalog-products-grid,
  .wishlist-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .product-card {
    padding: 16px;
  }

  .product-card-image-wrap {
    height: 200px;
  }

  .product-card-actions {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .product-card-actions .btn {
    width: 100%;
  }

  .payment-card {
    padding: 18px 14px;
  }

  .payment-card-title {
    font-size: 1.35rem;
  }

  .file-upload-dropzone {
    padding: 20px 12px;
  }

  .dropzone-title {
    font-size: 0.8125rem;
  }

  .header-actions {
    gap: 2px;
  }

  .header-action-btn {
    width: 36px;
    height: 36px;
  }

  .brand-logo-text {
    font-size: 1.15rem;
  }

  .site-header {
    height: 54px;
  }

  .cart-drawer {
    width: 100vw;
    max-width: 100vw;
  }

  .search-modal-dialog {
    margin: 8px;
    width: calc(100vw - 16px);
  }

  .titanium-spotlight {
    padding: 20px 16px;
    border-radius: 14px;
  }

  .hero-slide {
    padding: 32px 0 44px 0;
  }

  .hero-title {
    font-size: 1.85rem;
  }

  .hero-price-tag {
    flex-wrap: wrap;
    gap: 4px;
  }
}