/**
 * Mobile-Specific Styles for Sajborg.com
 * Optimized for smartphones and tablets
 *
 * Breakpoints:
 * - Mobile: < 768px
 * - Tablet: 768px - 991px
 * - Desktop: ≥ 992px
 */

/* ============================================
   GENERAL MOBILE IMPROVEMENTS
   ============================================ */

/* Prevent text size adjustment on iOS */
html {
  -webkit-text-size-adjust: 100%;
}

/* Ensure minimum font size to prevent zoom on iOS */
@media (max-width: 767px) {
  body {
    font-size: 16px;
  }

  /* All form inputs must be 16px to prevent zoom */
  input[type="text"],
  input[type="email"],
  input[type="tel"],
  input[type="password"],
  input[type="number"],
  input[type="search"],
  select,
  textarea {
    font-size: 16px !important;
  }
}

/* ============================================
   TOUCH TARGETS (Minimum 44x44px)
   ============================================ */

@media (max-width: 767px) {
  /* Buttons */
  .btn {
    min-height: 44px;
    padding: 0.5rem 1rem;
    font-size: 1rem;
  }

  .btn-lg {
    min-height: 48px;
    font-size: 1.1rem;
  }

  /* Navigation links */
  .nav-link {
    min-height: 44px;
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
  }

  /* Form controls */
  .form-control,
  .form-select {
    min-height: 44px;
    font-size: 16px;
  }

  /* Quantity controls */
  .quantity-btn,
  .quantity-minus,
  .quantity-plus {
    min-width: 44px !important;
    min-height: 44px !important;
    font-size: 1.25rem !important;
  }

  /* Card links */
  a.card,
  .card-link {
    min-height: 44px;
  }

  /* Pagination */
  .pagination .page-link {
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
}

/* ============================================
   NAVIGATION
   ============================================ */

@media (max-width: 991px) {
  /* Mobile navbar */
  .navbar-collapse {
    max-height: 80vh;
    overflow-y: auto;
  }

  /* Full-width nav items */
  .navbar-nav .nav-item {
    width: 100%;
    border-bottom: 1px solid rgba(0,0,0,0.1);
  }

  /* Dropdown menus */
  .navbar-nav .dropdown-menu {
    position: static !important;
    transform: none !important;
    border: none;
    box-shadow: none;
    width: 100%;
    margin: 0;
    padding-left: 1rem;
    background-color: #f8f9fa;
  }

  /* Search form full width */
  .navbar .search-form {
    width: 100%;
    margin: 1rem 0;
  }

  .navbar .search-form input {
    width: 100%;
  }

  /* Cart icon spacing */
  .navbar .cart-icon {
    font-size: 1.5rem;
    padding: 0.5rem;
  }
}

/* ============================================
   PRODUCT LISTING
   ============================================ */

@media (max-width: 767px) {
  /* Single column on mobile */
  .product-grid .col {
    flex: 0 0 100%;
    max-width: 100%;
  }

  /* Product cards */
  .product-card {
    margin-bottom: 1rem;
  }

  .product-card .card-body {
    padding: 1rem;
  }

  .product-card .card-title {
    font-size: 1rem;
    line-height: 1.3;
  }

  .product-card .product-price {
    font-size: 1.25rem;
    font-weight: bold;
  }

  /* Add to cart button on product cards */
  .product-card .add-to-cart-btn {
    width: 100%;
    min-height: 44px;
  }

  /* Filter sidebar - off-canvas style */
  .filter-sidebar {
    position: fixed;
    top: 0;
    left: -100%;
    width: 85%;
    max-width: 320px;
    height: 100vh;
    background: white;
    z-index: 1050;
    transition: left 0.3s ease;
    overflow-y: auto;
    box-shadow: 2px 0 5px rgba(0,0,0,0.1);
  }

  .filter-sidebar.show {
    left: 0;
  }

  /* Filter overlay */
  .filter-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0,0,0,0.5);
    z-index: 1040;
    display: none;
  }

  .filter-overlay.show {
    display: block;
  }

  /* Sort dropdown */
  .sort-dropdown {
    width: 100%;
    margin-bottom: 1rem;
  }
}

/* Tablet: 2 columns */
@media (min-width: 768px) and (max-width: 991px) {
  .product-grid .col {
    flex: 0 0 50%;
    max-width: 50%;
  }
}

/* ============================================
   PRODUCT DETAIL PAGE
   ============================================ */

@media (max-width: 767px) {
  /* Image gallery */
  .product-gallery {
    margin-bottom: 1.5rem;
  }

  .product-gallery .main-image {
    height: 300px;
    object-fit: contain;
  }

  .product-gallery .thumbnail {
    width: 60px;
    height: 60px;
    margin: 0.25rem;
  }

  /* Product info */
  .product-info h1 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
  }

  .product-price {
    font-size: 1.75rem;
    margin-bottom: 1rem;
  }

  /* Quantity selector */
  .quantity-selector {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
  }

  .quantity-input {
    max-width: 80px;
    text-align: center;
    font-size: 1.1rem;
  }

  /* CTA buttons */
  .add-to-cart-btn,
  .buy-now-btn {
    width: 100%;
    min-height: 48px;
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
  }

  /* Specifications table */
  .specifications-table {
    font-size: 0.9rem;
  }

  .specifications-table td,
  .specifications-table th {
    padding: 0.5rem;
  }

  /* Scroll hint for wide tables */
  .table-responsive {
    margin-bottom: 1rem;
  }

  .table-responsive::after {
    content: "← Свајпујте за више информација →";
    display: block;
    text-align: center;
    font-size: 0.85rem;
    color: #6c757d;
    margin-top: 0.5rem;
  }

  /* Reviews */
  .review-card {
    margin-bottom: 1rem;
  }

  .review-form textarea {
    min-height: 120px;
  }
}

/* ============================================
   CART PAGE
   ============================================ */

@media (max-width: 767px) {
  /* Cart items stack vertically */
  .cart-item {
    flex-direction: column;
    padding: 1rem;
  }

  .cart-item-image {
    width: 100%;
    max-width: 200px;
    margin: 0 auto 1rem;
  }

  .cart-item-details {
    width: 100%;
    text-align: center;
  }

  .cart-item-title {
    font-size: 1rem;
    margin-bottom: 0.5rem;
  }

  .cart-item-price {
    font-size: 1.25rem;
    font-weight: bold;
    margin-bottom: 1rem;
  }

  /* Quantity controls */
  .cart-quantity-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 1rem;
  }

  /* Remove button */
  .cart-remove-btn {
    width: 100%;
    min-height: 44px;
  }

  /* Cart summary */
  .cart-summary {
    position: sticky;
    bottom: 0;
    background: white;
    padding: 1rem;
    border-top: 2px solid #dee2e6;
    box-shadow: 0 -2px 5px rgba(0,0,0,0.1);
    margin: 0 -15px;
  }

  .cart-total {
    font-size: 1.5rem;
    margin-bottom: 1rem;
  }

  .checkout-btn {
    width: 100%;
    min-height: 48px;
    font-size: 1.1rem;
  }

  .continue-shopping-btn {
    width: 100%;
    min-height: 44px;
    margin-top: 0.5rem;
  }
}

/* ============================================
   CHECKOUT PAGE
   ============================================ */

@media (max-width: 767px) {
  /* Single column layout */
  .checkout-form .col-md-6 {
    flex: 0 0 100%;
    max-width: 100%;
  }

  /* Form sections */
  .checkout-section {
    margin-bottom: 2rem;
  }

  .checkout-section h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
  }

  /* Form inputs */
  .checkout-form .form-control,
  .checkout-form .form-select {
    min-height: 48px;
    font-size: 16px;
    margin-bottom: 1rem;
  }

  /* Payment method cards */
  .payment-method-card {
    padding: 1rem;
    margin-bottom: 1rem;
    min-height: 60px;
    cursor: pointer;
    border: 2px solid #dee2e6;
    border-radius: 0.375rem;
  }

  .payment-method-card.selected {
    border-color: #0d6efd;
    background-color: #e7f1ff;
  }

  .payment-method-card input[type="radio"] {
    width: 24px;
    height: 24px;
    margin-right: 1rem;
  }

  /* Order summary (sticky on mobile) */
  .order-summary {
    position: sticky;
    top: 70px;
    background: white;
    padding: 1rem;
    border: 2px solid #dee2e6;
    border-radius: 0.375rem;
    margin-bottom: 2rem;
  }

  .order-summary-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
  }

  .order-total {
    font-size: 1.5rem;
    font-weight: bold;
    border-top: 2px solid #dee2e6;
    padding-top: 0.75rem;
    margin-top: 0.75rem;
  }

  /* Place order button */
  .place-order-btn {
    width: 100%;
    min-height: 52px;
    font-size: 1.2rem;
    font-weight: bold;
  }
}

/* ============================================
   PC BUILDER
   ============================================ */

@media (max-width: 767px) {
  /* Component tabs */
  .component-tabs {
    flex-wrap: wrap;
  }

  .component-tab {
    flex: 0 0 50%;
    text-align: center;
    padding: 0.75rem 0.5rem;
    font-size: 0.85rem;
  }

  /* Component cards */
  .component-card {
    padding: 1rem;
    margin-bottom: 1rem;
  }

  .component-card-image {
    max-width: 100px;
    margin: 0 auto 1rem;
  }

  .component-card-details {
    text-align: center;
  }

  .component-select-btn {
    width: 100%;
    min-height: 44px;
  }

  /* Build summary */
  .build-summary {
    position: sticky;
    bottom: 0;
    background: white;
    padding: 1rem;
    border-top: 2px solid #dee2e6;
    box-shadow: 0 -2px 5px rgba(0,0,0,0.1);
  }

  .build-total {
    font-size: 1.5rem;
    margin-bottom: 1rem;
  }

  .save-build-btn,
  .add-build-to-cart-btn {
    width: 100%;
    min-height: 48px;
    margin-bottom: 0.5rem;
  }
}

/* ============================================
   FORMS & INPUTS
   ============================================ */

@media (max-width: 767px) {
  /* Form groups */
  .form-group {
    margin-bottom: 1.25rem;
  }

  /* Labels */
  label {
    font-size: 0.95rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
  }

  /* Required field indicator */
  .required::after {
    content: " *";
    color: #dc3545;
  }

  /* Form validation messages */
  .invalid-feedback,
  .valid-feedback {
    font-size: 0.9rem;
    margin-top: 0.25rem;
  }

  /* Checkboxes and radios */
  .form-check-input {
    width: 1.25rem;
    height: 1.25rem;
    margin-top: 0.125rem;
  }

  .form-check-label {
    margin-left: 0.5rem;
    font-size: 1rem;
  }
}

/* ============================================
   IMAGES & MEDIA
   ============================================ */

@media (max-width: 767px) {
  /* Responsive images */
  img {
    max-width: 100%;
    height: auto;
  }

  /* Product images */
  .product-image {
    max-height: 300px;
    object-fit: contain;
    width: 100%;
  }

  /* Category images */
  .category-image {
    max-height: 200px;
    object-fit: cover;
    width: 100%;
  }

  /* Logo */
  .navbar-brand img {
    max-height: 40px;
  }
}

/* ============================================
   MODALS
   ============================================ */

@media (max-width: 767px) {
  /* Full screen modals on mobile */
  .modal-dialog {
    margin: 0;
    max-width: 100%;
    height: 100vh;
  }

  .modal-content {
    height: 100vh;
    border-radius: 0;
  }

  .modal-body {
    overflow-y: auto;
    max-height: calc(100vh - 120px);
  }

  .modal-footer {
    position: sticky;
    bottom: 0;
    background: white;
    border-top: 2px solid #dee2e6;
  }

  /* Modal buttons */
  .modal-footer .btn {
    flex: 1;
    min-height: 44px;
  }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

@media (max-width: 767px) {
  /* Hide on mobile */
  .hide-mobile {
    display: none !important;
  }

  /* Show only on mobile */
  .show-mobile {
    display: block !important;
  }

  /* Full width on mobile */
  .mobile-full-width {
    width: 100% !important;
  }

  /* Text alignment */
  .mobile-text-center {
    text-align: center !important;
  }

  /* Spacing utilities */
  .mobile-mt-0 { margin-top: 0 !important; }
  .mobile-mt-1 { margin-top: 0.25rem !important; }
  .mobile-mt-2 { margin-top: 0.5rem !important; }
  .mobile-mt-3 { margin-top: 1rem !important; }
  .mobile-mt-4 { margin-top: 1.5rem !important; }

  .mobile-mb-0 { margin-bottom: 0 !important; }
  .mobile-mb-1 { margin-bottom: 0.25rem !important; }
  .mobile-mb-2 { margin-bottom: 0.5rem !important; }
  .mobile-mb-3 { margin-bottom: 1rem !important; }
  .mobile-mb-4 { margin-bottom: 1.5rem !important; }

  /* Padding utilities */
  .mobile-p-0 { padding: 0 !important; }
  .mobile-p-1 { padding: 0.25rem !important; }
  .mobile-p-2 { padding: 0.5rem !important; }
  .mobile-p-3 { padding: 1rem !important; }
}

/* ============================================
   LANDSCAPE MODE (Mobile Horizontal)
   ============================================ */

@media (max-width: 900px) and (orientation: landscape) {
  /* Reduce header height in landscape */
  .navbar {
    min-height: 50px;
  }

  /* Adjust modal height */
  .modal-content {
    max-height: 90vh;
  }

  /* Reduce excessive padding */
  .py-5 {
    padding-top: 2rem !important;
    padding-bottom: 2rem !important;
  }
}

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

/* Focus states for keyboard navigation */
@media (max-width: 767px) {
  a:focus,
  button:focus,
  input:focus,
  select:focus,
  textarea:focus {
    outline: 2px solid #0d6efd;
    outline-offset: 2px;
  }

  /* Skip to main content link */
  .skip-to-main {
    position: absolute;
    top: -40px;
    left: 0;
    background: #0d6efd;
    color: white;
    padding: 8px;
    z-index: 100;
  }

  .skip-to-main:focus {
    top: 0;
  }
}

/* ============================================
   PERFORMANCE OPTIMIZATIONS
   ============================================ */

/* Lazy loading skeleton */
.skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
}

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

/* Image loading placeholders */
.img-loading {
  background-color: #f0f0f0;
  min-height: 200px;
}

/* ============================================
   END OF MOBILE.CSS
   ============================================ */