/* -----------------------------------------
   Real Electronics Realignment Design System
   ----------------------------------------- */

:root {
    /* Color Palette */
    --color-primary: #1E40AF;       /* Blue */
    --color-primary-light: #EFF6FF; /* Active Blue Background */
    --color-secondary: #F97316;     /* Orange Accents */
    --color-success: #10B981;       /* Green */
    --color-danger: #EF4444;        /* Red */
    --color-warning: #FBBF24;       /* Warning Notice */
    --color-bg: #F9FAFB;            /* Off-White Page Background */
    --color-header-bg: #FFFFFF;     /* White Header */
    --color-card: #FFFFFF;          /* White Cards */
    --color-text-primary: #111827;  /* Charcoal */
    --color-text-secondary: #4B5563;/* Gray */
    --color-border: #E5E7EB;        /* Light Grey Border */
    --color-white: #FFFFFF;
    
    /* Spacing & Sizes */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 24px;
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-size-base: 16px;
    --font-size-h1: 20px;
    --font-size-h2: 18px;
    --font-size-h3: 15px;
    --font-size-body: 14px;
    --font-size-small: 12px;
}

/* -----------------------------------------
   Base Resets
   ----------------------------------------- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
    background-color: var(--color-bg);
    line-height: 1.5;
    padding-bottom: 80px; /* Space for mobile sticky footer/whatsapp */
}

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

/* -----------------------------------------
   Typography Helpers
   ----------------------------------------- */
h1 { font-size: var(--font-size-h1); font-weight: 700; margin-bottom: var(--spacing-sm); }
h2 { font-size: var(--font-size-h2); font-weight: 600; margin-bottom: var(--spacing-sm); }
h3 { font-size: var(--font-size-h3); font-weight: 600; margin-bottom: var(--spacing-xs); }
p { font-size: var(--font-size-body); color: var(--color-text-secondary); }

/* -----------------------------------------
   Layout Container
   ----------------------------------------- */
.container {
    width: 100%;
    padding: var(--spacing-md);
    margin-right: auto;
    margin-left: auto;
}

@media (min-width: 769px) {
    .container {
        max-width: 1200px;
        padding: var(--spacing-xl);
    }
    body {
        padding-bottom: 20px;
    }
}

/* -----------------------------------------
   Header Components (White Sticky Header)
   ----------------------------------------- */
.sticky-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--color-header-bg);
    color: var(--color-text-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    border-bottom: 1px solid var(--color-border);
}

.subheader-container {
    background-color: var(--color-header-bg);
    padding: 0 var(--spacing-md) var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 48px;
}

/* Emblem RE Logo */
.logo {
    font-size: 16px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-text-primary);
}

.logo-emblem {
    width: 32px;
    height: 32px;
    background: radial-gradient(circle, #252525 0%, #111 100%);
    border: 2px solid #D4AF37; /* Golden border */
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #D4AF37; /* Golden RE */
    font-family: 'Times New Roman', serif;
    font-weight: bold;
    font-size: 14px;
}

.header-top-icons {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-top-icons a {
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    transition: background-color 0.2s;
}

.header-top-icons a:hover {
    background-color: var(--color-bg);
}

.cart-icon-wrapper {
    position: relative;
}

.cart-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    background-color: var(--color-danger);
    color: var(--color-white);
    font-size: 9px;
    font-weight: bold;
    min-width: 16px;
    height: 16px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 3px;
    border: 1.5px solid var(--color-header-bg);
}

/* Search bar styling */
.search-form {
    margin-top: var(--spacing-sm);
    width: 100%;
}

.search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.search-input {
    width: 100%;
    height: 40px;
    padding: 0 44px 0 14px;
    border-radius: 8px;
    border: 1px solid #D1D5DB;
    font-size: 14px;
    outline: none;
    color: var(--color-text-primary);
    background-color: #F9FAFB;
}

.search-input:focus {
    border-color: var(--color-primary);
    background-color: var(--color-white);
}

.search-btn {
    position: absolute;
    right: 4px;
    width: 32px;
    height: 32px;
    border-radius: 6px;
    border: none;
    background-color: #2563EB;
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

/* -----------------------------------------
   Category Horizontal Slider (Carousel)
   ----------------------------------------- */
.category-slider {
    display: flex;
    overflow-x: auto;
    gap: 8px;
    padding: var(--spacing-sm) 0;
    margin-top: var(--spacing-sm);
    scrollbar-width: none; /* Firefox */
}

.category-slider::-webkit-scrollbar {
    display: none; /* Chrome/Safari */
}

.category-card {
    position: relative;
    width: 95px;
    height: 95px;
    border-radius: 12px;
    overflow: hidden;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 8px;
    border: 2px solid transparent;
    box-sizing: border-box;
    cursor: pointer;
    transition: all 0.2s ease;
}

.category-card.active {
    border-color: #2563EB;
    box-shadow: 0 0 0 1px #2563EB;
}

.category-card-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}

.category-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0,0,0,0) 45%, rgba(0,0,0,0.7) 100%);
    z-index: 2;
}

.category-card span {
    position: relative;
    z-index: 3;
    color: #FFFFFF;
    font-size: 11px;
    font-weight: 700;
    line-height: 1.2;
    white-space: normal;
    text-shadow: 0 1px 2px rgba(0,0,0,0.8);
    text-align: left;
}

/* Sort dropdown container */
.filter-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: var(--spacing-md) 0 var(--spacing-sm) 0;
}

.sort-select {
    height: 32px;
    padding: 0 24px 0 8px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    background-color: var(--color-white);
    font-size: 13px;
    color: var(--color-text-secondary);
    outline: none;
    -webkit-appearance: none;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns=%22http://www.w3.org/2000/svg%22 width=%2216%22 height=%2216%22 viewBox=%220 0 24 24%22 fill=%22none%22 stroke=%22currentColor%22 stroke-width=%222%22><polyline points=%226 9 12 15 18 9%22></polyline></svg>');
    background-repeat: no-repeat;
    background-position: right 6px center;
    background-size: 12px;
}

/* -----------------------------------------
   Product Components (2 Columns on Mobile)
   ----------------------------------------- */
.product-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr); /* 2 columns on mobile */
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

@media (min-width: 580px) and (max-width: 820px) {
    .product-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-md);
    }
}

@media (min-width: 821px) {
    .product-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--spacing-lg);
    }
}

.product-card {
    background-color: var(--color-card);
    border-radius: var(--border-radius-md);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    padding: var(--spacing-sm);
    border: 1px solid var(--color-border);
}

.product-image-link {
    display: block;
    width: 100%;
    height: 120px;
    overflow: hidden;
    border-radius: var(--border-radius-sm);
    margin-bottom: var(--spacing-xs);
    position: relative;
    background-color: #F9FAFB;
}

.product-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.product-info {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.product-price {
    font-size: 14px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 2px;
}

.product-name {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    height: 38px;
    line-height: 1.4;
}

/* Dual Button Styling */
.product-actions {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

/* -----------------------------------------
   Buttons (Realignment to Blue Themes)
   ----------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 36px;
    height: 36px;
    padding: 0 var(--spacing-md);
    border-radius: var(--border-radius-md);
    font-size: 13px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    text-align: center;
    transition: background-color 0.2s, opacity 0.2s;
    width: 100%;
    gap: 6px;
}

.btn:active {
    opacity: 0.85;
}

.btn-primary {
    background-color: #2563EB; /* Royal Blue */
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: #1D4ED8;
}

.btn-outline-primary {
    background-color: transparent;
    border: 1px solid #2563EB;
    color: #2563EB;
}

.btn-outline-primary:hover {
    background-color: var(--color-primary-light);
}

.btn-success {
    background-color: var(--color-success);
    color: var(--color-white);
}

.btn-danger {
    background-color: var(--color-danger);
    color: var(--color-white);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
}

.btn:disabled {
    background-color: var(--color-border);
    color: var(--color-text-secondary);
    cursor: not-allowed;
}

/* -----------------------------------------
   Single Product Details Page
   ----------------------------------------- */
.details-container {
    background-color: var(--color-card);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    margin-bottom: var(--spacing-xl);
    border: 1px solid var(--color-border);
}

.details-image-container {
    position: relative;
    width: 100%;
    max-height: 280px;
    overflow: hidden;
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-md);
    background-color: #FFFFFF;
    display: flex;
    justify-content: center;
    border: 1px solid var(--color-border);
}

.details-image {
    max-width: 100%;
    max-height: 280px;
    object-fit: contain;
}

/* Floating overlay icons */
.image-overlay-btn {
    position: absolute;
    width: 32px;
    height: 32px;
    background-color: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    cursor: pointer;
    border: 1px solid var(--color-border);
    right: 12px;
}

.image-overlay-btn.zoom { top: 12px; }
.image-overlay-btn.download { bottom: 12px; }

/* Thumbnail gallery switcher */
.thumbnail-row {
    display: flex;
    gap: 8px;
    margin-bottom: var(--spacing-md);
    overflow-x: auto;
}

.thumbnail-card {
    width: 50px;
    height: 50px;
    border-radius: var(--border-radius-sm);
    border: 1.5px solid var(--color-border);
    overflow: hidden;
    cursor: pointer;
    background-color: white;
}

.thumbnail-card.active {
    border-color: var(--color-primary);
}

.thumbnail-card img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.details-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
}

.details-price {
    font-size: 16px;
    font-weight: bold;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
}

/* Quantity Selector Pill Shape */
.qty-selector {
    display: inline-flex;
    align-items: center;
    border: 1px solid #BFDBFE; /* Blue border */
    border-radius: 20px;
    overflow: hidden;
    height: 36px;
    background-color: white;
}

.qty-btn {
    width: 36px;
    height: 100%;
    background: none;
    border: none;
    color: #2563EB;
    font-size: 16px;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.qty-btn:active {
    background-color: var(--color-primary-light);
}

.qty-input {
    width: 40px;
    height: 100%;
    border: none;
    text-align: center;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-primary);
    outline: none;
}

/* -----------------------------------------
   Checkout Page Redesign (Screenshot 3)
   ----------------------------------------- */
.checkout-card {
    background-color: var(--color-card);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--color-border);
}

.checkout-section-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 12px;
}

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

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-secondary);
}

.form-control {
    width: 100%;
    height: 40px;
    padding: 0 var(--spacing-sm);
    border-radius: 6px;
    border: 1px solid #D1D5DB;
    font-size: 14px;
    outline: none;
    color: var(--color-text-primary);
    background-color: var(--color-white);
}

.form-control:focus {
    border-color: var(--color-primary);
}

textarea.form-control {
    height: auto;
    padding: var(--spacing-sm);
}

/* Bangladesh flag phone input */
.bd-phone-container {
    display: flex;
    border: 1px solid #D1D5DB;
    border-radius: 6px;
    overflow: hidden;
    height: 40px;
}

.bd-flag-prefix {
    display: flex;
    align-items: center;
    gap: 6px;
    background-color: #F3F4F6;
    padding: 0 10px;
    border-right: 1px solid #D1D5DB;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-secondary);
}

.bd-flag-icon {
    width: 18px;
    height: 12px;
    background-color: #006A4E;
    border-radius: 2px;
    position: relative;
    overflow: hidden;
    display: inline-block;
}

.bd-flag-circle {
    position: absolute;
    width: 6px;
    height: 6px;
    background-color: #F42A41;
    border-radius: 50%;
    top: 3px;
    left: 6px;
}

.bd-phone-container .form-control {
    border: none;
    flex-grow: 1;
}

/* Payment Touch Grid */
.payment-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.payment-label {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding: 10px;
    background-color: #F9FAFB;
    border: 1.5px solid var(--color-border);
    border-radius: 8px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 600;
    transition: all 0.2s;
    position: relative;
}

.payment-label-content {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.payment-label img {
    height: 24px;
    object-fit: contain;
    margin-top: 4px;
}

.payment-label input[type="radio"] {
    position: absolute;
    right: 8px;
    top: 8px;
    accent-color: var(--color-primary);
}

.payment-label:has(input[type="radio"]:checked) {
    border-color: var(--color-primary);
    background-color: var(--color-primary-light);
}

/* Warnings in red matching screenshot 3 */
.red-notices {
    color: #DC2626;
    background-color: #FEF2F2;
    border: 1px solid #FEE2E2;
    border-radius: 8px;
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    font-size: 11px;
    line-height: 1.5;
}

.red-notices ul {
    list-style: none;
}

.red-notices li {
    margin-bottom: 4px;
}

/* Interactive Cart Item inside Checkout Page */
.checkout-cart-item {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border);
}

.checkout-cart-item:last-child {
    border-bottom: none;
}

.checkout-cart-item-image {
    width: 50px;
    height: 50px;
    object-fit: contain;
    border-radius: 6px;
    border: 1px solid var(--color-border);
    background-color: white;
}

.checkout-cart-item-info {
    flex-grow: 1;
}

.checkout-cart-item-name {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 2px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.checkout-cart-item-price {
    font-size: 12px;
    font-weight: 700;
    color: var(--color-text-secondary);
}

.checkout-cart-item-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* -----------------------------------------
   Floating WhatsApp Button
   ----------------------------------------- */
.whatsapp-float {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 52px;
    height: 52px;
    background-color: #25D366;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    cursor: pointer;
    transition: transform 0.2s, background-color 0.2s;
    animation: pulse-whatsapp 2s infinite;
}

.whatsapp-float:hover {
    background-color: #20BA56;
}

.whatsapp-float:active {
    transform: scale(0.9);
}

.whatsapp-float svg {
    width: 28px;
    height: 28px;
    fill: currentColor;
}

@keyframes pulse-whatsapp {
    0% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.6), 0 4px 10px rgba(0, 0, 0, 0.2);
    }
    70% {
        box-shadow: 0 0 0 14px rgba(37, 211, 102, 0), 0 4px 10px rgba(0, 0, 0, 0.2);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0), 0 4px 10px rgba(0, 0, 0, 0.2);
    }
}

/* -----------------------------------------
   Footer Redesign
   ----------------------------------------- */
.site-footer {
    background-color: #FFFFFF;
    color: var(--color-text-primary);
    padding: var(--spacing-xl) var(--spacing-md);
    border-top: 1px solid var(--color-border);
    font-size: 13px;
    text-align: left;
}

.footer-logo-row {
    margin-bottom: var(--spacing-lg);
}

.footer-socials {
    display: flex;
    gap: 12px;
    margin-top: 10px;
}

.footer-social-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: var(--spacing-lg);
}

@media (min-width: 481px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (min-width: 769px) {
    .footer-grid {
        grid-template-columns: 1.5fr 1fr 1fr;
    }
}

.footer-col h3 {
    font-size: 14px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 12px;
    text-transform: uppercase;
}

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

.footer-col li {
    margin-bottom: 8px;
    font-size: 13px;
    color: var(--color-text-secondary);
}

.footer-col li a:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

.footer-contact-item {
    display: flex;
    gap: 8px;
    align-items: flex-start;
    margin-bottom: 10px;
    color: var(--color-text-secondary);
}

.footer-contact-item svg {
    margin-top: 3px;
    flex-shrink: 0;
    color: var(--color-text-secondary);
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-md);
    text-align: center;
    font-size: 11px;
    color: var(--color-text-secondary);
}

/* -----------------------------------------
   Lightbox Modal for Image Zoom
   ----------------------------------------- */
.lightbox {
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    display: none; /* Flex when active */
    align-items: center;
    justify-content: center;
    padding: 16px;
    box-sizing: border-box;
}

.lightbox-content {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: var(--border-radius-md);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    animation: zoom-animation 0.2s ease-out;
}

@keyframes zoom-animation {
    from { transform: scale(0.9); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 30px;
    color: #FFFFFF;
    font-size: 36px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.2s;
    user-select: none;
}

.lightbox-close:hover {
    color: #D1D5DB;
}