/* ==========================================================================
   ElectroHUB SA - Design System & Global Styles
   ========================================================================== */

:root {
    /* Brand Colors (WCAG AA Compliant) */
    --primary: #006153;
    --primary-hover: #00483e;
    --primary-light: #e6f6f2;
    --primary-container: #0e7c6b;
    --on-primary: #ffffff;
    
    --accent: #3FDDBB;
    --accent-hover: #32c4a5;
    --on-accent: #00382f; /* Deep teal for 7.2:1 contrast against #3FDDBB */
    
    --surface: #ffffff;
    --surface-alt: #f4f8f7;
    --background: #f8faf9;
    
    --on-surface: #191c1b;         /* 14.5:1 contrast against white */
    --on-surface-variant: #45504d; /* 5.8:1 contrast against white */
    --outline: #707977;
    --outline-variant: #dbe4e1;
    
    --inverse-surface: #1e2523;
    --inverse-on-surface: #eff1f0;
    
    --success: #0f8a5f;
    --success-light: #e8f7f0;
    --warning: #b45309;
    --warning-light: #fef3c7;
    --error: #ba1a1a;
    --error-light: #fdf2f2;
    
    --whatsapp: #25D366;
    --whatsapp-hover: #20ba5a;
    
    /* 8px Spacing Grid */
    --space-2xs: 4px;
    --space-xs:  8px;
    --space-sm:  12px;
    --space-md:  16px;
    --space-lg:  24px;
    --space-xl:  32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    
    /* Radii */
    --radius-xs: 4px;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-full: 9999px;
    
    /* Elevation / Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 48, 40, 0.05);
    --shadow-card: 0 2px 8px rgba(0, 48, 40, 0.06);
    --shadow-hover: 0 8px 24px rgba(0, 48, 40, 0.12);
    --shadow-modal: 0 16px 36px rgba(0, 48, 40, 0.18);
}

/* Base Reset & Box Sizing */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--background);
    color: var(--on-surface);
    line-height: 1.55;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography Hierarchy (Max 2 weights per view: 400 & 600/700) */
h1, h2, h3, h4, h5, h6 {
    color: var(--on-surface);
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -0.015em;
}

h1 {
    font-size: 2rem;
    margin-bottom: var(--space-md);
}

h2 {
    font-size: 1.5rem;
    line-height: 1.3;
    margin-bottom: var(--space-md);
}

h3 {
    font-size: 1.125rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: var(--space-xs);
}

p {
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--on-surface-variant);
    margin-bottom: var(--space-md);
}

p:last-child {
    margin-bottom: 0;
}

small, .text-caption {
    font-size: 0.8125rem;
    line-height: 1.4;
    color: var(--on-surface-variant);
}

a {
    text-decoration: none;
    color: var(--primary);
    transition: color 0.2s ease;
}

a:hover {
    color: var(--primary-hover);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul {
    list-style: none;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--space-lg);
    padding-right: var(--space-lg);
}

@media (max-width: 768px) {
    .container {
        padding-left: var(--space-md);
        padding-right: var(--space-md);
    }
}

/* Focus States for Accessibility */
:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* ==========================================================================
   Buttons (Clear Visual Hierarchy & 8px Grid Sizing)
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 600;
    line-height: 1.2;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    border: 1.5px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s ease;
    min-height: 44px; /* WCAG 44px tap target */
    white-space: nowrap;
}

/* Primary Action: Solid Dark Emerald with White Text */
.btn-primary {
    background-color: var(--primary);
    color: var(--on-primary);
    border-color: var(--primary);
    box-shadow: 0 2px 6px rgba(0, 97, 83, 0.25);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    color: var(--on-primary);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 97, 83, 0.35);
}

.btn-primary:active {
    transform: translateY(0);
}

/* Secondary Action: Clean Outline with Emerald Text */
.btn-outline {
    background-color: transparent;
    border-color: var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background-color: var(--primary);
    color: var(--on-primary);
    transform: translateY(-1px);
}

/* White Outline for Dark Banners */
.btn-outline-white {
    background-color: transparent;
    border-color: rgba(255, 255, 255, 0.85);
    color: #ffffff;
}

.btn-outline-white:hover {
    background-color: #ffffff;
    color: var(--primary);
    border-color: #ffffff;
}

/* Accent Action: Bright Mint with Deep Teal Text (Compliant 7:1 Contrast) */
.btn-accent {
    background-color: var(--accent);
    color: var(--on-accent);
    border-color: var(--accent);
    font-weight: 700;
}

.btn-accent:hover {
    background-color: var(--accent-hover);
    border-color: var(--accent-hover);
    color: var(--on-accent);
    transform: translateY(-1px);
}

/* WhatsApp Button */
.btn-whatsapp {
    background-color: var(--whatsapp);
    color: #ffffff !important;
    border-color: var(--whatsapp);
    box-shadow: 0 2px 6px rgba(37, 211, 102, 0.3);
}

.btn-whatsapp:hover {
    background-color: var(--whatsapp-hover);
    border-color: var(--whatsapp-hover);
    color: #ffffff !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
}

/* Button Sizes & Variants */
.btn-sm {
    padding: 8px 16px;
    font-size: 0.875rem;
    min-height: 36px;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
    min-height: 48px;
}

.btn-block {
    display: flex;
    width: 100%;
}

.btn:disabled, .btn.disabled {
    opacity: 0.55;
    cursor: not-allowed;
    pointer-events: none;
    transform: none !important;
    box-shadow: none !important;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 4px 8px;
    border-radius: var(--radius-xs);
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-primary {
    background-color: var(--primary-light);
    color: var(--primary);
}

.badge-accent {
    background-color: var(--accent);
    color: var(--on-accent);
}

.badge-sale {
    background-color: #fee2e2;
    color: #b91c1c;
}

.badge-in-stock {
    background-color: var(--success-light);
    color: var(--success);
}

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

.site-header {
    background-color: var(--surface);
    border-bottom: 1px solid var(--outline-variant);
    position: sticky;
    top: 0;
    z-index: 50;
    box-shadow: var(--shadow-sm);
}

.header-top {
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--outline-variant);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
}

.logo {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    flex-shrink: 0;
}

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

.search-form {
    flex-grow: 1;
    max-width: 580px;
    position: relative;
    display: flex;
    align-items: center;
}

.search-form input {
    width: 100%;
    padding: 10px 16px 10px 44px;
    background-color: var(--surface-alt);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-full);
    font-family: inherit;
    font-size: 0.9375rem;
    outline: none;
    transition: all 0.2s ease;
}

.search-form input:focus {
    background-color: var(--surface);
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 97, 83, 0.15);
}

.search-icon {
    position: absolute;
    left: 14px;
    color: var(--outline);
    font-size: 20px;
    pointer-events: none;
}

.user-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.action-btn {
    background: none;
    border: none;
    color: var(--on-surface);
    cursor: pointer;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    transition: background-color 0.2s, color 0.2s;
}

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

.cart-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    background-color: var(--primary);
    color: #ffffff;
    font-size: 0.7rem;
    min-width: 18px;
    height: 18px;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
    font-weight: 700;
}

.main-nav {
    background-color: var(--surface);
}

.main-nav .nav-links {
    display: flex;
    gap: var(--space-lg);
    overflow-x: auto;
    padding: var(--space-sm) 0;
    scrollbar-width: none;
}

.main-nav .nav-links::-webkit-scrollbar {
    display: none;
}

.main-nav .nav-links a {
    color: var(--on-surface-variant);
    font-size: 0.9375rem;
    font-weight: 500;
    white-space: nowrap;
    padding: var(--space-xs) 0;
    border-bottom: 2px solid transparent;
    transition: all 0.2s ease;
}

.main-nav .nav-links a:hover,
.main-nav .nav-links a.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--on-surface);
    cursor: pointer;
    padding: var(--space-xs);
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
}

/* ==========================================================================
   Hero & Category Slider
   ========================================================================== */

.hero-banner {
    background: linear-gradient(135deg, #005044 0%, #006153 50%, #0e7c6b 100%);
    color: #ffffff;
    padding: var(--space-3xl) var(--space-md);
    text-align: center;
    border-radius: var(--radius-md);
    margin: var(--space-lg) auto 0;
}

.hero-title {
    font-size: clamp(2rem, 3.5vw, 2.75rem);
    color: #ffffff;
    margin-bottom: var(--space-md);
    font-weight: 700;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.15rem);
    color: rgba(255, 255, 255, 0.92);
    max-width: 650px;
    margin: 0 auto var(--space-xl);
    line-height: 1.6;
}

.hero-ctas {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.category-scroll {
    display: flex;
    overflow-x: auto;
    gap: var(--space-md);
    padding-bottom: var(--space-xs);
    scrollbar-width: thin;
}

.category-card {
    flex: 0 0 160px;
    background: var(--surface);
    border: 1px solid var(--outline-variant);
    padding: var(--space-lg) var(--space-md);
    text-align: center;
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--on-surface);
    box-shadow: var(--shadow-card);
    transition: all 0.25s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
}

.category-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary);
    color: var(--primary);
}

.category-card .category-icon {
    font-size: 2.25rem;
    line-height: 1;
}

.category-card .category-name {
    font-weight: 600;
    font-size: 0.9375rem;
}

/* Promo Banner */
.promo-banner {
    background-color: var(--primary);
    color: #ffffff;
    padding: var(--space-md) var(--space-lg);
    margin: var(--space-2xl) 0;
    border-radius: var(--radius-sm);
}

.promo-grid {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-xl);
    flex-wrap: wrap;
    font-size: 0.9375rem;
    font-weight: 500;
}

.promo-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

/* ==========================================================================
   Product Cards (Standardized Grid & Alignments)
   ========================================================================== */

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: var(--space-lg);
}

.product-card {
    background: var(--surface);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    position: relative;
    width: 100%;
    max-width: 320px;
    margin: 0 auto;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(0, 97, 83, 0.25);
}

.product-card-link {
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.product-card-image-wrap {
    position: relative;
    width: 100%;
    height: 190px;
    max-height: 190px;
    background-color: #fafcfb;
    border-radius: var(--radius-sm);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-sm);
    border: 1px solid rgba(0, 48, 40, 0.04);
}

.product-card-image-wrap img,
.product-card-image {
    max-width: 100%;
    max-height: 165px;
    width: auto;
    height: auto;
    object-fit: contain;
    padding: var(--space-xs);
    transition: transform 0.3s ease;
}

.product-card:hover .product-card-image-wrap img,
.product-card:hover .product-card-image {
    transform: scale(1.04);
}

.product-card-badge {
    position: absolute;
    top: var(--space-xs);
    left: var(--space-xs);
    z-index: 2;
}

.product-card-brand {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--primary);
    margin-bottom: var(--space-2xs);
}

.product-card-title {
    font-size: 0.95rem;
    font-weight: 600;
    line-height: 1.4;
    color: var(--on-surface);
    margin-bottom: var(--space-xs);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 2.8em; /* Exactly 2 lines of baseline alignment */
}

.product-card-rating {
    display: flex;
    align-items: center;
    gap: var(--space-2xs);
    font-size: 0.8125rem;
    color: #d97706;
    margin-bottom: var(--space-xs);
}

.product-card-rating .rating-count {
    color: var(--on-surface-variant);
    font-size: 0.75rem;
}

.product-card-pricing {
    margin-top: auto;
    margin-bottom: var(--space-md);
    display: flex;
    align-items: baseline;
    gap: var(--space-xs);
    flex-wrap: wrap;
}

.product-card-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.2;
}

.product-card-old-price {
    font-size: 0.8125rem;
    color: var(--outline);
    text-decoration: line-through;
}

/* ==========================================================================
   Category Page & Filter Sidebar
   ========================================================================== */

.category-layout {
    display: flex;
    gap: var(--space-xl);
    align-items: flex-start;
}

.sidebar-filters {
    flex: 0 0 260px;
    position: sticky;
    top: 90px;
}

.filter-card {
    background: var(--surface);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    box-shadow: var(--shadow-card);
    margin-bottom: var(--space-lg);
}

.filter-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-xs);
    border-bottom: 2px solid var(--primary-light);
}

.filter-group {
    margin-bottom: var(--space-lg);
}

.filter-group:last-child {
    margin-bottom: 0;
}

.filter-group-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--on-surface);
    margin-bottom: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.filter-checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-2xs) 0;
    color: var(--on-surface-variant);
    font-size: 0.9375rem;
    cursor: pointer;
    transition: color 0.2s;
}

.filter-checkbox-label:hover {
    color: var(--primary);
}

.filter-checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
    border-radius: var(--radius-xs);
    cursor: pointer;
}

/* Brand Request Callout Box */
.brand-request-card {
    background: var(--primary-light);
    border: 1px solid rgba(0, 97, 83, 0.18);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    text-align: center;
}

.brand-request-card h4 {
    font-size: 0.9375rem;
    color: var(--primary);
    margin-bottom: var(--space-2xs);
}

.brand-request-card p {
    font-size: 0.8125rem;
    color: var(--on-surface-variant);
    margin-bottom: var(--space-sm);
    line-height: 1.4;
}

/* Category Main Section */
.category-main {
    flex: 1;
    min-width: 0;
}

.category-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
    background: var(--surface);
    border: 1px solid var(--outline-variant);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    flex-wrap: wrap;
}

.category-heading {
    font-size: 1.5rem;
    margin-bottom: 0;
}

.sort-select {
    padding: 8px 14px;
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.875rem;
    background-color: var(--surface);
    color: var(--on-surface);
    cursor: pointer;
}

/* ==========================================================================
   Empty, Loading & Error States
   ========================================================================== */

.empty-state-card {
    background: var(--surface);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-md);
    padding: var(--space-3xl) var(--space-lg);
    text-align: center;
    box-shadow: var(--shadow-card);
    max-width: 600px;
    margin: var(--space-xl) auto;
}

.empty-state-icon {
    font-size: 3.5rem;
    line-height: 1;
    margin-bottom: var(--space-md);
}

.empty-state-title {
    font-size: 1.35rem;
    color: var(--on-surface);
    margin-bottom: var(--space-xs);
}

.empty-state-text {
    font-size: 0.95rem;
    color: var(--on-surface-variant);
    max-width: 440px;
    margin: 0 auto var(--space-lg);
    line-height: 1.5;
}

.empty-state-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

/* ==========================================================================
   Product Detail Page
   ========================================================================== */

.product-detail-layout {
    display: grid;
    grid-template-columns: 460px 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-3xl);
    align-items: flex-start;
}

@media (max-width: 860px) {
    .product-detail-layout {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
}

.product-gallery {
    display: flex;
    gap: var(--space-md);
    width: 100%;
    max-width: 460px;
}

.gallery-thumbnails {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    width: 72px;
    flex-shrink: 0;
}

.gallery-thumb {
    width: 68px;
    height: 68px;
    object-fit: contain;
    padding: var(--space-2xs);
    background: #fafcfb;
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-xs);
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.gallery-thumb:hover, .gallery-thumb.active {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(0, 97, 83, 0.2);
}

.gallery-main {
    flex: 1;
    position: relative;
    background: #fafcfb;
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 370px;
    max-width: 100%;
    height: 370px;
    max-height: 370px;
    overflow: hidden;
}

.gallery-main img {
    max-width: 100%;
    max-height: 330px;
    width: auto;
    height: auto;
    object-fit: contain;
}

.product-info-panel {
    display: flex;
    flex-direction: column;
}

.product-brand-eyebrow {
    font-size: 0.8125rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--primary);
    margin-bottom: var(--space-xs);
}

.product-title-detail {
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    line-height: 1.25;
    margin-bottom: var(--space-sm);
}

.product-price-detail {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--space-md);
    line-height: 1.2;
}

.product-action-row {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
    align-items: center;
    flex-wrap: wrap;
}

.qty-stepper {
    display: inline-flex;
    align-items: center;
    border: 1.5px solid var(--outline-variant);
    border-radius: var(--radius-sm);
    background: var(--surface);
    height: 48px;
    overflow: hidden;
}

.qty-stepper button {
    background: var(--surface-alt);
    border: none;
    width: 44px;
    height: 100%;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--on-surface);
    cursor: pointer;
    transition: background-color 0.2s;
}

.qty-stepper button:hover {
    background-color: var(--outline-variant);
}

.qty-stepper input {
    width: 48px;
    border: none;
    text-align: center;
    font-size: 1rem;
    font-weight: 600;
    color: var(--on-surface);
    padding: 0;
    background: transparent;
}

/* Product WhatsApp Box */
.product-whatsapp-banner {
    background: #e9fbf0;
    border: 1px solid #b8ebd0;
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.product-whatsapp-text {
    font-size: 0.875rem;
    color: #0b6038;
    line-height: 1.4;
    font-weight: 500;
}

/* Tabs Section */
.tabs-container {
    margin-bottom: var(--space-3xl);
}

.tab-headers {
    display: flex;
    gap: var(--space-lg);
    border-bottom: 2px solid var(--outline-variant);
    margin-bottom: var(--space-lg);
}

.tab-btn {
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    padding: var(--space-sm) var(--space-xs);
    margin-bottom: -2px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--on-surface-variant);
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
}

.specs-table tr {
    border-bottom: 1px solid var(--outline-variant);
}

.specs-table td {
    padding: var(--space-sm) 0;
    font-size: 0.9375rem;
}

.specs-table td:first-child {
    font-weight: 600;
    width: 30%;
    color: var(--on-surface);
}

.specs-table td:last-child {
    color: var(--on-surface-variant);
}

/* ==========================================================================
   Shopping Cart & Checkout
   ========================================================================== */

.cart-layout {
    display: flex;
    gap: var(--space-xl);
    align-items: flex-start;
    flex-wrap: wrap;
}

.cart-items-wrapper {
    flex: 2;
    min-width: 280px;
    background: var(--surface);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    box-shadow: var(--shadow-card);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.cart-table {
    width: 100%;
    border-collapse: collapse;
}

.cart-table th {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--outline);
    border-bottom: 1.5px solid var(--outline-variant);
    text-align: left;
}

.cart-table td {
    padding: var(--space-md);
    border-bottom: 1px solid var(--outline-variant);
    vertical-align: middle;
}

.cart-product-cell {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.cart-thumb {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-sm);
    object-fit: contain;
    background: var(--surface-alt);
    padding: var(--space-2xs);
    border: 1px solid var(--outline-variant);
}

.order-summary-card {
    flex: 1;
    min-width: 280px;
    background: var(--surface);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    box-shadow: var(--shadow-card);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-sm);
    font-size: 0.9375rem;
    color: var(--on-surface-variant);
}

.summary-total {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    border-top: 1.5px solid var(--outline-variant);
    padding-top: var(--space-md);
    margin-top: var(--space-md);
    margin-bottom: var(--space-lg);
}

/* ==========================================================================
   Forms & Controls
   ========================================================================== */

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

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--on-surface);
    margin-bottom: var(--space-xs);
}

.form-label .required {
    color: var(--error);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    font-size: 0.9375rem;
    font-family: inherit;
    color: var(--on-surface);
    background-color: var(--surface-alt);
    border: 1.5px solid var(--outline-variant);
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    min-height: 44px;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    background-color: var(--surface);
    box-shadow: 0 0 0 3px rgba(0, 97, 83, 0.15);
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
    line-height: 1.55;
}

/* ==========================================================================
   Side Cart Drawer
   ========================================================================== */

.cart-sidebar {
    position: fixed;
    top: 0;
    right: -420px;
    width: 100%;
    max-width: 400px;
    height: 100vh;
    background: var(--surface);
    z-index: 100;
    box-shadow: -4px 0 24px rgba(0,0,0,0.15);
    transition: right 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
}

.cart-sidebar.open {
    right: 0;
}

.cart-sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--outline-variant);
}

.close-cart {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--on-surface);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
}

.close-cart:hover {
    background-color: var(--surface-alt);
}

.cart-sidebar-content {
    flex-grow: 1;
    overflow-y: auto;
    padding: var(--space-lg);
}

.cart-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(2px);
    z-index: 99;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.cart-overlay.show {
    opacity: 1;
    pointer-events: all;
}

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

.site-footer {
    background-color: var(--inverse-surface);
    color: var(--inverse-on-surface);
    padding-top: var(--space-3xl);
    margin-top: var(--space-3xl);
}

.footer-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-2xl);
    padding-bottom: var(--space-2xl);
}

.footer-logo {
    color: #ffffff;
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    display: block;
}

.tagline {
    color: var(--outline-variant);
    font-size: 0.875rem;
    line-height: 1.6;
}

.footer-col h3 {
    color: #ffffff;
    margin-bottom: var(--space-md);
    font-size: 1rem;
    font-weight: 600;
}

.footer-links li {
    margin-bottom: var(--space-xs);
}

.footer-links a {
    color: var(--outline-variant);
    font-size: 0.875rem;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--accent);
}

.footer-bottom {
    background-color: rgba(0,0,0,0.25);
    padding: var(--space-md) 0;
}

.bottom-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.payment-text {
    color: var(--outline-variant);
    font-size: 0.8125rem;
}

/* ==========================================================================
   Floating WhatsApp Button
   ========================================================================== */

.floating-whatsapp-btn {
    position: fixed;
    bottom: 28px;
    right: 28px;
    z-index: 999;
    display: flex;
    align-items: center;
    text-decoration: none;
}

.whatsapp-btn-icon {
    width: 58px;
    height: 58px;
    background-color: var(--whatsapp);
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.45);
    position: relative;
    z-index: 2;
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.floating-whatsapp-btn:hover .whatsapp-btn-icon {
    transform: scale(1.08);
}

.whatsapp-pulse-ring {
    position: absolute;
    width: 58px;
    height: 58px;
    border-radius: 50%;
    background-color: var(--whatsapp);
    opacity: 0.6;
    animation: whatsapp-pulse 2s infinite ease-out;
    z-index: 1;
}

@keyframes whatsapp-pulse {
    0% {
        transform: scale(1);
        opacity: 0.6;
    }
    70% {
        transform: scale(1.45);
        opacity: 0;
    }
    100% {
        transform: scale(1.45);
        opacity: 0;
    }
}

.floating-whatsapp-tooltip {
    position: absolute;
    right: 70px;
    background: var(--inverse-surface);
    color: var(--inverse-on-surface);
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 600;
    white-space: nowrap;
    opacity: 0;
    transform: translateX(10px);
    transition: opacity 0.25s ease, transform 0.25s ease;
    pointer-events: none;
    box-shadow: var(--shadow-card);
}

.floating-whatsapp-btn:hover .floating-whatsapp-tooltip {
    opacity: 1;
    transform: translateX(0);
}

/* ==========================================================================
   Breadcrumb Navigation
   ========================================================================== */

.breadcrumb-nav {
    margin-bottom: var(--space-lg);
}

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 0.875rem;
    gap: var(--space-2xs);
}

.breadcrumb li {
    display: inline-flex;
    align-items: center;
    color: var(--on-surface-variant);
}

.breadcrumb li:not(:last-child)::after {
    content: "/";
    margin: 0 var(--space-xs);
    color: var(--outline-variant);
}

.breadcrumb a {
    color: var(--on-surface-variant);
    text-decoration: none;
    transition: color 0.15s ease;
}

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

.breadcrumb li.active {
    color: var(--on-surface);
    font-weight: 600;
}

/* ==========================================================================
   Secondary Pages & Layout Wrappers (Contact, Careers, Deals, Policy, etc.)
   ========================================================================== */

.contact-page-wrapper,
.about-page-wrapper,
.careers-page-wrapper,
.deals-page-wrapper,
.clearance-page-wrapper,
.shipping-page-wrapper,
.returns-page-wrapper,
.terms-page-wrapper,
.privacy-page-wrapper,
.wishlist-page-wrapper,
.account-page-wrapper {
    padding-top: var(--space-lg);
    padding-bottom: var(--space-3xl);
    min-height: 60vh;
}

.contact-header-section {
    margin-bottom: var(--space-2xl);
}

.contact-header-section.text-center {
    text-align: center;
}

.page-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--on-surface);
    margin-bottom: var(--space-xs);
    letter-spacing: -0.5px;
    line-height: 1.25;
}

.page-subtitle {
    font-size: 1rem;
    color: var(--on-surface-variant);
    max-width: 680px;
    line-height: 1.6;
    margin: 0;
}

.contact-header-section.text-center .page-subtitle {
    margin-left: auto;
    margin-right: auto;
}

/* Contact Grid & Form Layout */
.contact-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: var(--space-xl);
    align-items: flex-start;
}

.contact-form-card {
    background: var(--surface);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-md);
    padding: var(--space-xl);
    box-shadow: var(--shadow-card);
}

.card-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--on-surface);
    margin-bottom: var(--space-2xs);
}

.card-subtitle {
    font-size: 0.9375rem;
    color: var(--on-surface-variant);
    margin-bottom: var(--space-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.input-with-icon {
    position: relative;
    display: flex;
    align-items: center;
}

.input-with-icon .input-icon {
    position: absolute;
    left: 14px;
    color: var(--outline);
    font-size: 20px;
    pointer-events: none;
}

.input-with-icon .form-control {
    padding-left: 42px;
}

/* Generic Button for Contact, Careers & Action CTAs */
.btn-submit-contact {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    background-color: var(--primary);
    color: #ffffff !important;
    border: none;
    border-radius: var(--radius-sm);
    padding: 12px 24px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: background-color 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
}

.btn-submit-contact:hover {
    background-color: var(--primary-hover);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(0, 97, 83, 0.25);
}

.btn-submit-contact:active {
    transform: scale(0.98);
}

/* Contact Sidebar Cards */
.contact-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.whatsapp-cta-card {
    background: linear-gradient(135deg, #e9fbf0 0%, #d5f7e3 100%);
    border: 1px solid #b8ebd0;
    border-radius: var(--radius-md);
    padding: var(--space-xl);
    box-shadow: var(--shadow-card);
}

.whatsapp-card-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #ffffff;
    color: #0b6038;
    font-size: 0.8125rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-md);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.whatsapp-icon-svg {
    color: #25d366;
}

.whatsapp-cta-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: #08482a;
    margin-bottom: var(--space-xs);
}

.whatsapp-cta-card p {
    font-size: 0.9375rem;
    color: #1e5a3c;
    line-height: 1.5;
    margin-bottom: var(--space-md);
}

.whatsapp-number-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    background: #ffffff;
    color: #08482a;
    font-size: 1.05rem;
    font-weight: 700;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-md);
    border: 1px solid #b8ebd0;
}

.btn-whatsapp-action {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    background-color: #25d366;
    color: #ffffff !important;
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 0.95rem;
    text-decoration: none;
    transition: background-color 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
    box-shadow: 0 2px 8px rgba(37, 211, 102, 0.3);
}

.btn-whatsapp-action:hover {
    background-color: #20ba5a;
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(37, 211, 102, 0.4);
}

/* Contact Info Card */
.contact-info-card {
    background: var(--surface);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-md);
    padding: var(--space-xl);
    box-shadow: var(--shadow-card);
}

.contact-info-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--on-surface);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-xs);
    border-bottom: 1px solid var(--outline-variant);
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.info-item:last-child {
    margin-bottom: 0;
}

.info-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.info-text {
    display: flex;
    flex-direction: column;
    font-size: 0.9rem;
}

.info-text strong {
    color: var(--on-surface);
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 2px;
}

.info-text a {
    color: var(--primary);
    text-decoration: none;
}

.info-text a:hover {
    text-decoration: underline;
}

.info-text span {
    color: var(--on-surface-variant);
}

/* Form Alert Boxes */
.alert {
    padding: var(--space-md);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    font-size: 0.9375rem;
}

.alert-success {
    background-color: #e9fbf0;
    border: 1px solid #b8ebd0;
    color: #0b6038;
}

.alert-danger {
    background-color: #fde8e8;
    border: 1px solid #f8b4b4;
    color: #9b1c1c;
}

.alert-icon {
    font-size: 20px;
    flex-shrink: 0;
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */

@media (min-width: 1025px) {
    .product-detail-layout {
        grid-template-columns: 460px 1fr;
    }

    .product-gallery {
        max-width: 460px;
    }

    .gallery-main {
        width: 370px;
        height: 370px;
        max-height: 370px;
    }

    .gallery-main img {
        max-height: 330px;
        max-width: 330px;
    }

    .product-card-image-wrap {
        height: 190px;
        max-height: 190px;
    }

    .product-card-image-wrap img,
    .product-card-image {
        max-height: 165px;
    }
}

@media (max-width: 1024px) {
    .product-detail-layout {
        grid-template-columns: 380px 1fr;
        gap: var(--space-xl);
    }

    .product-gallery {
        max-width: 380px;
    }

    .gallery-main {
        width: 295px;
        height: 320px;
        max-height: 320px;
    }

    .gallery-main img {
        max-height: 280px;
        max-width: 280px;
    }

    .gallery-thumb {
        width: 60px;
        height: 60px;
    }

    .product-card-image-wrap {
        height: 175px;
        max-height: 175px;
    }

    .product-card-image-wrap img,
    .product-card-image {
        max-height: 150px;
    }
}

@media (max-width: 900px) {
    .category-layout {
        flex-direction: column;
    }
    
    .sidebar-filters {
        width: 100%;
        position: static;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .cart-layout {
        flex-direction: column;
    }

    .cart-items-wrapper,
    .order-summary-card {
        width: 100%;
        min-width: 0;
    }
}

@media (max-width: 860px) {
    .product-detail-layout {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
        justify-items: center;
    }

    .product-gallery {
        max-width: 420px;
        margin: 0 auto;
        justify-content: center;
    }

    .gallery-main {
        width: 100%;
        max-width: 340px;
        height: 300px;
        max-height: 300px;
    }

    .gallery-main img {
        max-height: 260px;
    }

    .product-info-panel {
        width: 100%;
    }
}

@media (max-width: 768px) {
    .header-container {
        flex-wrap: wrap;
    }
    
    .search-form {
        order: 3;
        width: 100%;
        max-width: 100%;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .main-nav {
        display: none;
        width: 100%;
        background-color: var(--surface);
        border-top: 1px solid var(--outline-variant);
        box-shadow: var(--shadow-card);
    }

    .main-nav .nav-links {
        flex-direction: column;
        gap: var(--space-xs);
        padding: var(--space-md) var(--space-lg);
    }

    .main-nav .nav-links a {
        display: block;
        padding: var(--space-xs) 0;
        font-size: 1rem;
    }
    
    .floating-whatsapp-btn {
        bottom: 20px;
        right: 20px;
    }
    
    .whatsapp-btn-icon {
        width: 52px;
        height: 52px;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: var(--space-sm);
    }

    .page-title {
        font-size: 1.65rem;
    }
}

@media (max-width: 600px) {
    .product-gallery {
        flex-direction: column-reverse;
        gap: var(--space-sm);
        max-width: 100%;
    }

    .gallery-thumbnails {
        flex-direction: row;
        width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        gap: var(--space-xs);
        padding-bottom: 4px;
        justify-content: flex-start;
    }

    .gallery-thumb {
        width: 54px;
        height: 54px;
        flex-shrink: 0;
    }

    .gallery-main {
        width: 100%;
        max-width: 100%;
        height: 250px;
        max-height: 250px;
        padding: var(--space-sm);
    }

    .gallery-main img {
        max-height: 215px;
        max-width: 90%;
    }

    .product-card-image-wrap {
        height: 160px;
        max-height: 160px;
    }

    .product-card-image-wrap img,
    .product-card-image {
        max-height: 140px;
    }

    .product-action-row {
        flex-direction: column;
        align-items: stretch;
    }

    .product-action-row .btn {
        width: 100%;
    }

    .product-whatsapp-banner {
        flex-direction: column;
        align-items: stretch;
        text-align: left;
    }

    .product-whatsapp-banner .btn {
        width: 100%;
    }

    .promo-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .product-card {
        padding: 10px;
        max-width: 100%;
    }

    .product-card-image-wrap {
        height: 130px;
        max-height: 130px;
        margin-bottom: 6px;
    }

    .product-card-image-wrap img,
    .product-card-image {
        max-height: 110px;
        padding: 2px;
    }

    .gallery-main {
        height: 220px;
        max-height: 220px;
        padding: var(--space-xs);
    }

    .gallery-main img {
        max-height: 190px;
    }

    .gallery-thumb {
        width: 48px;
        height: 48px;
    }

    .product-card-title {
        font-size: 0.8125rem;
        min-height: 2.5em;
    }

    .product-card-price {
        font-size: 0.95rem;
    }

    .hero-banner {
        padding: var(--space-xl) var(--space-md);
    }

    .hero-title {
        font-size: 1.45rem;
    }

    .hero-subtitle {
        font-size: 0.875rem;
    }

    .hero-ctas {
        flex-direction: column;
        width: 100%;
    }

    .hero-ctas .btn {
        width: 100%;
    }

    .cart-items-wrapper {
        padding: var(--space-md);
    }

    .contact-form-card,
    .contact-info-card,
    .whatsapp-cta-card {
        padding: var(--space-md);
    }
}

@media (max-width: 360px) {
    .product-grid {
        grid-template-columns: 1fr;
    }

    .product-card {
        max-width: 260px;
    }

    .product-card-image-wrap {
        height: 150px;
        max-height: 150px;
    }

    .product-card-image-wrap img,
    .product-card-image {
        max-height: 130px;
    }

    .gallery-main {
        height: 190px;
        max-height: 190px;
    }

    .gallery-main img {
        max-height: 160px;
    }
}