/* De La Rinconada Ferreterias - Core Stylesheet */

/* --- 1. Design Tokens & CSS Variables --- */
:root {
    --bg-dark: #090b0e;
    --bg-surface: #12161f;
    --bg-surface-alt: #1a202c;
    --border-color: #262f3f;
    --border-color-glow: rgba(255, 102, 0, 0.25);
    
    --color-primary: #ff6600; /* Safety Orange */
    --color-primary-hover: #ff8533;
    --color-primary-rgb: 255, 102, 0;
    --color-secondary: #ffa500; /* Amber Orange */
    --color-success: #10b981;
    --color-danger: #ef4444;
    
    --color-text: #f8fafc;
    --color-text-muted: #94a3b8;
    --color-text-dim: #64748b;
    
    --font-title: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    
    --shadow-premium: 0 10px 40px -10px rgba(0, 0, 0, 0.8);
    --shadow-glow: 0 0 20px rgba(255, 102, 0, 0.15);
    
    --border-radius-sm: 6px;
    --border-radius-md: 12px;
    --border-radius-lg: 20px;
    
    --header-height: 80px;
}

/* --- 2. Base Resets & Global Styles --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) var(--bg-dark);
}

body {
    background-color: var(--bg-dark);
    color: var(--color-text);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

button, input, select, textarea {
    font-family: inherit;
    color: inherit;
    background: none;
    border: none;
    outline: none;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

/* Utilities */
.section-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 80px 24px;
}

.bg-surface-alt {
    background-color: var(--bg-surface-alt);
    max-width: 100%;
}

.text-gradient {
    background: linear-gradient(135deg, #ffffff 30%, var(--color-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hidden {
    display: none !important;
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 30px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-primary {
    background-color: rgba(255, 102, 0, 0.15);
    color: var(--color-primary);
    border: 1px solid rgba(255, 102, 0, 0.3);
}

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

/* --- 3. Header Component --- */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: rgba(9, 11, 14, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    display: flex;
    align-items: center;
    transition: var(--transition-smooth);
}

.header-container {
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-title);
    font-weight: 800;
    font-size: 1.5rem;
    letter-spacing: -0.02em;
    cursor: pointer;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--color-primary) 0%, #d45500 100%);
    border-radius: var(--border-radius-sm);
    color: #fff;
    box-shadow: 0 4px 15px rgba(255, 102, 0, 0.3);
    position: relative;
    transform: rotate(-5deg);
    transition: var(--transition-bounce);
}

.logo:hover .logo-icon {
    transform: rotate(5deg) scale(1.1);
}

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

.header-search {
    flex: 1;
    max-width: 500px;
    position: relative;
}

.header-search input {
    width: 100%;
    background-color: rgba(18, 22, 31, 0.8);
    border: 1px solid var(--border-color);
    padding: 12px 16px 12px 48px;
    border-radius: var(--border-radius-md);
    font-size: 0.9rem;
    color: var(--color-text);
    transition: var(--transition-smooth);
}

.header-search input:focus {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
    background-color: var(--bg-surface);
}

.header-search svg {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    pointer-events: none;
    transition: var(--transition-smooth);
}

.header-search input:focus + svg {
    color: var(--color-primary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.cart-toggle-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background-color: rgba(255, 102, 0, 0.1);
    color: var(--color-primary);
    border: 1px solid rgba(255, 102, 0, 0.2);
    padding: 10px 18px;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition-smooth);
    position: relative;
}

.cart-toggle-btn:hover {
    background-color: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
    box-shadow: 0 4px 15px rgba(255, 102, 0, 0.3);
}

.cart-count {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 4px;
    background-color: #fff;
    color: var(--bg-dark);
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 10px;
    transition: var(--transition-smooth);
}

.cart-toggle-btn:hover .cart-count {
    background-color: var(--bg-dark);
    color: #fff;
}

/* --- 4. Hero Section --- */
.hero-wrapper {
    padding-top: calc(var(--header-height) + 20px);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.hero-info {
    z-index: 10;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-primary);
    background-color: rgba(255, 102, 0, 0.1);
    padding: 6px 14px;
    border-radius: 30px;
    border: 1px solid rgba(255, 102, 0, 0.2);
    margin-bottom: 24px;
}

.hero-tag svg {
    animation: pulse 2s infinite;
}

.hero-title {
    font-family: var(--font-title);
    font-size: 4rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: -0.03em;
}

.hero-desc {
    color: var(--color-text-muted);
    font-size: 1.15rem;
    margin-bottom: 36px;
    max-width: 550px;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: var(--border-radius-md);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-primary {
    background-color: var(--color-primary);
    color: #fff;
    box-shadow: 0 4px 20px rgba(255, 102, 0, 0.35);
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(255, 102, 0, 0.45);
}

.btn-secondary {
    background-color: rgba(38, 47, 63, 0.5);
    border: 1px solid var(--border-color);
    color: var(--color-text);
}

.btn-secondary:hover {
    background-color: rgba(38, 47, 63, 0.8);
    border-color: var(--color-text-muted);
    transform: translateY(-2px);
}

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-visual-card {
    background: linear-gradient(135deg, rgba(18, 22, 31, 0.9) 0%, rgba(9, 11, 14, 0.95) 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    width: 100%;
    max-width: 500px;
    position: relative;
    box-shadow: var(--shadow-premium);
    overflow: hidden;
}

.hero-visual-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-secondary) 100%);
}

.grid-bg {
    position: absolute;
    width: 200%;
    height: 200%;
    background-image: 
        linear-gradient(rgba(255, 102, 0, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 102, 0, 0.03) 1px, transparent 1px);
    background-size: 30px 30px;
    transform: rotate(15deg);
    top: -50%;
    left: -50%;
    pointer-events: none;
    z-index: 1;
}

.hero-stat-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    position: relative;
    z-index: 2;
}

.hero-stat-card {
    background-color: rgba(26, 32, 44, 0.5);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 20px;
    text-align: center;
    transition: var(--transition-smooth);
}

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

.hero-stat-num {
    font-family: var(--font-title);
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.hero-stat-lbl {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* --- 5. Paint Visualizer Component --- */
.visualizer-wrapper {
    background: linear-gradient(135deg, rgba(18, 22, 31, 0.8) 0%, rgba(9, 11, 14, 0.9) 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-premium);
    position: relative;
    overflow: hidden;
}

.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-subtitle {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 12px;
}

.section-title {
    font-family: var(--font-title);
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.visualizer-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 40px;
    align-items: center;
}

.room-preview-container {
    background-color: #050608;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    aspect-ratio: 16 / 10;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    box-shadow: inset 0 0 30px rgba(0, 0, 0, 0.9);
}

/* Room SVG Styles */
.room-svg {
    width: 100%;
    height: 100%;
}

.visualizer-wall {
    transition: fill 0.6s ease;
}

.visualizer-controls {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.color-swatch-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.swatch-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-muted);
}

.color-swatches {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.color-swatch-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    cursor: pointer;
    border: 3px solid transparent;
    transition: var(--transition-bounce);
    position: relative;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.color-swatch-btn:hover {
    transform: scale(1.15);
}

.color-swatch-btn.active {
    border-color: #fff;
    box-shadow: 0 0 0 2px var(--color-primary);
}

.active-color-info {
    background-color: rgba(26, 32, 44, 0.4);
    border: 1px solid var(--border-color);
    padding: 16px;
    border-radius: var(--border-radius-md);
}

.active-color-name {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--color-text);
}

.active-color-desc {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.visualizer-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.options-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.options-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-muted);
}

.options-group select {
    background-color: rgba(26, 32, 44, 0.8);
    border: 1px solid var(--border-color);
    padding: 12px;
    border-radius: var(--border-radius-md);
    cursor: pointer;
}

.options-group select:focus {
    border-color: var(--color-primary);
}

.price-display-box {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
}

.price-lbl {
    font-size: 0.95rem;
    color: var(--color-text-muted);
}

.price-val {
    font-family: var(--font-title);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-primary);
}

/* --- 6. Product Catalog Section --- */
.catalog-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 32px;
    align-items: start;
}

/* Sidebar Filters */
.filters-sidebar {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    position: sticky;
    top: calc(var(--header-height) + 20px);
}

.filter-group {
    margin-bottom: 28px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}

.filter-group:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.filter-title {
    font-family: var(--font-title);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--color-text);
}

.category-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.category-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: var(--transition-smooth);
}

.category-item:hover, .category-item.active {
    background-color: rgba(255, 102, 0, 0.1);
    color: var(--color-primary);
}

.category-count {
    background-color: rgba(38, 47, 63, 0.4);
    color: var(--color-text-dim);
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 600;
}

.category-item:hover .category-count, .category-item.active .category-count {
    background-color: var(--color-primary);
    color: #fff;
}

.price-slider-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.price-slider-group input[type="range"] {
    width: 100%;
    accent-color: var(--color-primary);
    background-color: var(--border-color);
    height: 4px;
    border-radius: 2px;
    cursor: pointer;
}

.price-range-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.checkbox-label input[type="checkbox"] {
    accent-color: var(--color-primary);
    width: 16px;
    height: 16px;
    border-radius: 4px;
    cursor: pointer;
}

/* Catalog Controls */
.catalog-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 16px 24px;
    border-radius: var(--border-radius-md);
}

.results-count {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.results-count span {
    font-weight: 700;
    color: var(--color-text);
}

.sort-dropdown select {
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
    cursor: pointer;
}

.sort-dropdown select:focus {
    border-color: var(--color-primary);
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.product-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.product-card:hover {
    border-color: var(--color-primary-rgb);
    box-shadow: var(--shadow-premium), var(--shadow-glow);
    transform: translateY(-4px);
}

.product-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    z-index: 5;
}

.product-image-container {
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(26, 32, 44, 0.4);
    border-radius: var(--border-radius-md);
    margin-bottom: 16px;
    position: relative;
    border: 1px solid rgba(38, 47, 63, 0.3);
    overflow: hidden;
}

.product-icon-bg {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 102, 0, 0.1);
    color: var(--color-primary);
    border-radius: 50%;
    transition: var(--transition-bounce);
}

.product-card:hover .product-icon-bg {
    transform: scale(1.1) rotate(-10deg);
    background-color: var(--color-primary);
    color: #fff;
}

.product-info {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.product-rating {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-bottom: 8px;
    font-size: 0.8rem;
    color: var(--color-secondary);
}

.product-rating span {
    color: var(--color-text-muted);
    font-size: 0.75rem;
    margin-left: 4px;
}

.product-name {
    font-family: var(--font-title);
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--color-text);
}

.product-desc {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 16px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    border-top: 1px solid rgba(38, 47, 63, 0.4);
    padding-top: 16px;
}

.product-price {
    font-family: var(--font-title);
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--color-text);
}

.add-to-cart-btn {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 102, 0, 0.15);
    color: var(--color-primary);
    border: 1px solid rgba(255, 102, 0, 0.3);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.add-to-cart-btn:hover {
    background-color: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

/* Empty State / Search Not Found */
.empty-state {
    text-align: center;
    padding: 60px 24px;
    background-color: var(--bg-surface);
    border: 1px dashed var(--border-color);
    border-radius: var(--border-radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.empty-state svg {
    color: var(--color-text-dim);
}

.empty-state-title {
    font-family: var(--font-title);
    font-size: 1.35rem;
    font-weight: 700;
}

.empty-state-desc {
    color: var(--color-text-muted);
    max-width: 400px;
}

/* --- 7. Services Section --- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.service-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    transition: var(--transition-smooth);
}

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

.service-icon {
    width: 56px;
    height: 56px;
    background-color: rgba(255, 102, 0, 0.1);
    color: var(--color-primary);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.service-title {
    font-family: var(--font-title);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.service-desc {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* --- 8. Footer Section --- */
.footer-wrapper {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--border-color);
}

.footer-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.footer-info .logo {
    cursor: default;
}

.footer-desc {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    max-width: 320px;
}

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

.social-link {
    width: 38px;
    height: 38px;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    transition: var(--transition-smooth);
}

.social-link:hover {
    background-color: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.footer-col-title {
    font-family: var(--font-title);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: #fff;
    position: relative;
}

.footer-col-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 30px;
    height: 2px;
    background-color: var(--color-primary);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
    list-style: none;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.footer-links a:hover {
    color: var(--color-primary);
    padding-left: 4px;
    transition: var(--transition-smooth);
}

.contact-info-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    list-style: none;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.contact-info-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

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

.footer-bottom {
    max-width: 1400px;
    margin: 0 auto;
    padding: 30px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--color-text-dim);
}

/* --- 9. Shopping Cart Drawer & Overlay --- */
.cart-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(5, 6, 8, 0.7);
    backdrop-filter: blur(8px);
    z-index: 1999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

.cart-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.cart-drawer {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    max-width: 480px;
    height: 100vh;
    background-color: var(--bg-surface);
    border-left: 1px solid var(--border-color);
    z-index: 2000;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.8);
    display: flex;
    flex-direction: column;
}

.cart-drawer.active {
    transform: translateX(0);
}

.cart-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cart-title {
    font-family: var(--font-title);
    font-size: 1.35rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 10px;
}

.cart-close-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: rgba(38, 47, 63, 0.3);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.cart-close-btn:hover {
    background-color: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.cart-items-container {
    flex-grow: 1;
    padding: 24px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.cart-item {
    display: flex;
    gap: 16px;
    background-color: rgba(26, 32, 44, 0.4);
    border: 1px solid var(--border-color);
    padding: 16px;
    border-radius: var(--border-radius-md);
    position: relative;
    transition: var(--transition-smooth);
}

.cart-item:hover {
    border-color: rgba(255, 102, 0, 0.3);
}

.cart-item-icon {
    width: 48px;
    height: 48px;
    background-color: rgba(255, 102, 0, 0.1);
    color: var(--color-primary);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.cart-item-details {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.cart-item-name {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 2px;
}

.cart-item-meta {
    font-size: 0.75rem;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.cart-item-price {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-muted);
}

.cart-item-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 10px;
}

.quantity-control {
    display: flex;
    align-items: center;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    overflow: hidden;
}

.qty-btn {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 0.85rem;
    transition: var(--transition-smooth);
}

.qty-btn:hover {
    background-color: rgba(255, 102, 0, 0.15);
    color: var(--color-primary);
}

.qty-val {
    width: 32px;
    text-align: center;
    font-size: 0.85rem;
    font-weight: 700;
}

.remove-item-btn {
    color: var(--color-text-dim);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.remove-item-btn:hover {
    color: var(--color-danger);
}

.cart-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--color-text-dim);
    gap: 16px;
    text-align: center;
}

.cart-footer {
    padding: 24px;
    border-top: 1px solid var(--border-color);
    background-color: rgba(18, 22, 31, 0.95);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.cart-summary {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.95rem;
    color: var(--color-text-muted);
}

.summary-row.total {
    border-top: 1px solid var(--border-color);
    padding-top: 12px;
    font-family: var(--font-title);
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--color-text);
}

.summary-row.total .price {
    color: var(--color-primary);
}

.whatsapp-submit-btn {
    width: 100%;
    background-color: #25d366; /* WhatsApp Green */
    color: #fff;
    padding: 16px;
    border-radius: var(--border-radius-md);
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
    transition: var(--transition-smooth);
}

.whatsapp-submit-btn:hover {
    background-color: #20ba56;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4);
}

/* --- 10. Keyframe Animations --- */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.6;
        transform: scale(0.92);
    }
}

/* --- 11. Responsive Media Queries --- */
@media (max-width: 1024px) {
    .hero-wrapper {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 36px;
    }
    
    .hero-info {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-desc {
        margin-left: auto;
        margin-right: auto;
    }
    
    .catalog-layout {
        grid-template-columns: 1fr;
    }
    
    .filters-sidebar {
        position: relative;
        top: 0;
        width: 100%;
    }
    
    .visualizer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }
    
    .section-container {
        padding: 48px 16px;
    }
    
    .hero-title {
        font-size: 2.8rem;
    }
    
    .header-search {
        display: none; /* Hide main search on small screen, can toggle or use catalog filter */
    }
    
    .footer-wrapper {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}