/* 
   VEFA STEEL - Corporate Website Design System & Styling
   Author: Antigravity AI
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
    /* Fonts */
    --font-heading: 'Outfit', 'Inter', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Light Theme Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.4);
    --glass-shadow: rgba(15, 23, 42, 0.05);

    /* Common Branding Colors */
    --vefa-blue-start: #0ea5e9;
    --vefa-blue-end: #2563eb;
    --accent-gradient: linear-gradient(135deg, var(--vefa-blue-start), var(--vefa-blue-end));
    --accent-glow: rgba(14, 165, 233, 0.25);
    
    /* Animation Speeds */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

    /* Shadow Settings */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Dark Theme Colors Override */
[data-theme="dark"] {
    --bg-primary: #0b0f19;
    --bg-secondary: #111827;
    --bg-tertiary: #1f2937;
    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --border-color: #374151;
    --glass-bg: rgba(17, 24, 39, 0.7);
    --glass-border: rgba(255, 255, 255, 0.05);
    --glass-shadow: rgba(0, 0, 0, 0.3);
}

/* Global Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    height: 100%;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -0.025em;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

/* Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header & Navigation */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 5rem;
}

.logo-wrapper a {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 2.75rem;
    width: auto;
    display: block;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.05));
    transition: transform var(--transition-fast);
}

.logo-img:hover {
    transform: scale(1.02);
}

/* Floating WhatsApp Button */
.whatsapp-float {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background-color: #25d366;
    color: #ffffff;
    width: 3.75rem;
    height: 3.75rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: all var(--transition-normal);
    animation: pulse-whatsapp 2s infinite;
}

.whatsapp-float:hover {
    transform: scale(1.08) translateY(-3px);
    background-color: #20ba5a;
    box-shadow: 0 6px 16px rgba(37, 211, 102, 0.5);
    color: #ffffff;
}

@keyframes pulse-whatsapp {
    0% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.5);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
    }
}

.nav-menu {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gradient);
    transition: width var(--transition-normal);
    border-radius: 2px;
}

.nav-link:hover, .nav-link.active {
    color: var(--text-primary);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Control Buttons */
.btn-control {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-control:hover {
    background: var(--bg-tertiary);
    border-color: var(--text-primary);
    transform: translateY(-2px);
}

.lang-switch {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.85rem;
}

/* Mobile Menu Button */
.btn-mobile-toggle {
    display: none;
}

.mobile-only {
    display: none !important;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--accent-gradient);
    color: #ffffff;
    box-shadow: 0 4px 14px 0 var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 var(--accent-glow);
    filter: brightness(1.05);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--text-muted);
    transform: translateY(-2px);
}

/* Sections Base Styling */
main {
    margin-top: 5rem; /* Account for fixed header */
    flex: 1 0 auto;
}

section {
    padding: 6rem 0;
}

.section-bg-alt {
    background-color: var(--bg-secondary);
}

.section-header {
    text-align: center;
    max-width: 42rem;
    margin: 0 auto 4rem auto;
}

.section-subtitle {
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.75rem;
    display: inline-block;
}

.section-title {
    font-size: 2.25rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.section-desc {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Hero Slider Section */
.hero-slider-section {
    position: relative;
    margin-top: 5rem;
    overflow: hidden;
    height: 75vh;
    min-height: 550px;
    background-color: #0b0f19;
}

.slider-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 1s cubic-bezier(0.4, 0, 0.2, 1), visibility 1s;
    z-index: 1;
}

.slide.active {
    opacity: 1;
    visibility: visible;
    z-index: 2;
}

.slide-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    transition: transform 10s ease;
    transform: scale(1);
}

.slide.active .slide-bg {
    transform: scale(1.04);
}

.slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(11, 15, 25, 0.9) 0%, rgba(11, 15, 25, 0.5) 50%, rgba(11, 15, 25, 0.2) 100%);
    z-index: 2;
}

.slide-container {
    position: relative;
    z-index: 3;
    height: 100%;
    display: flex;
    align-items: center;
}

.slide-content {
    max-width: 700px;
    color: #ffffff;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s 0.3s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide.active .slide-content {
    opacity: 1;
    transform: translateY(0);
}

.slide-content .hero-title {
    color: #ffffff;
    font-size: 3.25rem;
    line-height: 1.15;
}

.slide-content .hero-title span {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.slide-content .hero-text {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.15rem;
}

/* Slider Controls */
.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #ffffff;
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 50%;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: all var(--transition-fast);
}

.slider-arrow:hover {
    background: var(--accent-gradient);
    border-color: transparent;
    box-shadow: 0 0 15px var(--accent-glow);
    transform: translateY(-50%) scale(1.05);
}

.slider-arrow.prev {
    left: 2rem;
}

.slider-arrow.next {
    right: 2rem;
}

.slider-dots {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.dot.active {
    width: 28px;
    border-radius: 5px;
    background: #0ea5e9;
    box-shadow: 0 0 8px #0ea5e9;
}

@media (max-width: 992px) {
    .hero-slider-section {
        height: 65vh;
        min-height: 480px;
    }
    
    .slide-content .hero-title {
        font-size: 2.25rem;
    }
    
    .slide-content .hero-text {
        font-size: 1rem;
    }
    
    .slider-arrow {
        width: 2.75rem;
        height: 2.75rem;
        font-size: 1.15rem;
    }
    
    .slider-arrow.prev {
        left: 1rem;
    }
    
    .slider-arrow.next {
        right: 1rem;
    }
}

/* Feature Cards Grid (Home page) */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    border-radius: 1rem;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 0;
    background: var(--accent-gradient);
    transition: height var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.feature-card:hover::before {
    height: 100%;
}

.feature-icon-wrapper {
    width: 3.5rem;
    height: 3.5rem;
    background: var(--accent-glow);
    color: #0ea5e9;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.feature-card-title {
    font-size: 1.35rem;
    margin-bottom: 0.75rem;
}

.feature-card-desc {
    color: var(--text-secondary);
}

/* Footer Style */
.main-footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 4rem 0 2rem 0;
    margin-top: auto;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-info {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.footer-info .logo-text {
    font-size: 1.75rem;
}

.footer-info-text {
    line-height: 1.7;
}

.footer-heading {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

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

.footer-contact-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.footer-contact-icon {
    color: #0ea5e9;
    font-size: 1.1rem;
    margin-top: 0.2rem;
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
}

.footer-socials {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--accent-gradient);
    color: #ffffff;
    border-color: transparent;
    transform: translateY(-2px);
}

/* ABOUT PAGE */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.about-visual {
    border-radius: 1.5rem;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-color);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.about-visual:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(14, 165, 233, 0.15);
}

.about-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.about-visual:hover img {
    transform: scale(1.04);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 4rem;
}

.value-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
}

.value-icon {
    font-size: 2.5rem;
    color: #0ea5e9;
    margin-bottom: 1.5rem;
}

.value-title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.value-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* PRODUCTS PAGE ALTERNATING LAYOUT */
.products-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 3.5rem;
    align-items: start;
}

.products-sidebar {
    position: sticky;
    top: 7rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.5rem;
    max-height: 80vh;
    overflow-y: auto;
}

.sidebar-title {
    font-size: 1.1rem;
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.toc-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.toc-link {
    width: 100%;
    text-align: left;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.5rem 0.75rem;
    border-radius: 0.35rem;
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.toc-link:hover, .toc-link.active {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-weight: 600;
}

.toc-link.active {
    border-left: 3px solid #0ea5e9;
    border-radius: 0 0.35rem 0.35rem 0;
}

.products-list {
    display: flex;
    flex-direction: column;
    gap: 5rem;
}

.product-row {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    padding-bottom: 5rem;
    border-bottom: 1px solid var(--border-color);
    align-items: start;
    scroll-margin-top: 7.5rem; /* Smooth-scroll padding */
}

.product-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.product-row-image {
    position: relative;
    border-radius: 1.25rem;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
}

.product-row-image img {
    width: 100%;
    height: auto;
    display: block;
}

.product-row-info {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.product-row-category {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: #0ea5e9;
}

.product-row-title {
    font-size: 1.75rem;
    color: var(--text-primary);
}

.product-row-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.product-row-catalog-image {
    width: 100%;
    margin-top: 1rem;
    border-radius: 0.75rem;
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    background-color: #ffffff;
    display: flex;
    justify-content: center;
    align-items: center;
}

[data-theme="dark"] .product-row-catalog-image {
    background-color: #ffffff;
    opacity: 0.95;
}

.catalog-page-img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
}

/* Alternating Layout */
.product-row:nth-child(even) .product-row-image {
    order: 2;
}

.product-row:nth-child(even) .product-row-info {
    order: 1;
}

/* Specifications Tables styling */
.table-responsive {
    overflow-x: auto;
    margin-top: 0.75rem;
    margin-bottom: 1.5rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.85rem;
}

.specs-table th {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-weight: 700;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

.specs-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.specs-table tr:last-child td {
    border-bottom: none;
}

.specs-table tr:hover td {
    background-color: var(--bg-tertiary);
}

/* CONTACT PAGE */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    align-items: start;
}

.contact-info-panel {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: 0.75rem;
    display: flex;
    gap: 1.25rem;
    align-items: flex-start;
}

.contact-icon-box {
    width: 3rem;
    height: 3rem;
    background: var(--accent-gradient);
    color: #ffffff;
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.contact-item-title {
    font-weight: 700;
    font-size: 1.05rem;
    margin-bottom: 0.25rem;
}

.contact-item-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.map-wrapper {
    border-radius: 1rem;
    overflow: hidden;
    border: 1px solid var(--border-color);
    height: 300px;
    box-shadow: var(--shadow-md);
}

.contact-form-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 3rem;
    border-radius: 1.25rem;
    box-shadow: var(--shadow-lg);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.form-input {
    width: 100%;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: #0ea5e9;
    box-shadow: 0 0 0 3px var(--accent-glow);
}

textarea.form-input {
    resize: vertical;
    min-height: 120px;
}

/* Feedback Notifications */
.form-feedback {
    display: none;
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
    font-weight: 500;
}

.form-feedback.success {
    display: block;
    background-color: rgba(16, 185, 129, 0.1);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.form-feedback.error {
    display: block;
    background-color: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

/* Responsive Grid Adjustments */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .hero-badge {
        align-self: center;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .products-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .products-sidebar {
        position: static;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 992px) {
    /* Mobile Navigation */
    .mobile-only {
        display: block !important;
    }
    
    .nav-actions .btn-primary {
        display: none !important;
    }
    

    .btn-mobile-toggle {
        display: flex;
        z-index: 1001;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        bottom: 0;
        width: 280px;
        background: var(--bg-secondary);
        border-left: 1px solid var(--border-color);
        flex-direction: column;
        justify-content: center;
        align-items: flex-start;
        padding: 3rem;
        transition: right var(--transition-normal);
        z-index: 999;
        box-shadow: var(--shadow-xl);
    }
    
    .nav-menu.open {
        right: 0;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .values-grid {
        grid-template-columns: 1fr;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .product-detail-summary {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .contact-form-panel {
        padding: 1.5rem;
    }
}

/* Lightbox Modal */
.lightbox {
    display: none;
    position: fixed;
    z-index: 2000;
    padding-top: 5rem;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(11, 15, 25, 0.9);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.lightbox.open {
    display: flex;
    opacity: 1;
}

.lightbox-content {
    margin: auto;
    display: block;
    max-width: 90%;
    max-height: 80vh;
    border-radius: 0.75rem;
    box-shadow: var(--shadow-xl);
    transform: scale(0.95);
    transition: transform var(--transition-normal);
    object-fit: contain;
    background-color: #ffffff;
}

.lightbox.open .lightbox-content {
    transform: scale(1);
}

.lightbox-close {
    position: absolute;
    top: 2rem;
    right: 2.5rem;
    color: #ffffff;
    font-size: 2.5rem;
    font-weight: bold;
    cursor: pointer;
    transition: color var(--transition-fast);
    z-index: 2001;
}

.lightbox-close:hover {
    color: #0ea5e9;
}

.lightbox-caption {
    position: absolute;
    bottom: 2rem;
    color: #ffffff;
    font-size: 1.15rem;
    font-weight: 600;
    text-align: center;
    width: 100%;
    padding: 0 1rem;
}

/* Clickable Zoom-in Styles */
.product-row-image img, .catalog-page-img {
    cursor: zoom-in;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.product-row-image img:hover, .catalog-page-img:hover {
    transform: scale(1.015);
    box-shadow: var(--shadow-lg);
}

/* Background Steel Sparks & Shapes Animation */
.bg-steel-sparks {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

.spark {
    position: absolute;
    bottom: -20px;
    background: linear-gradient(135deg, #0ea5e9, #f59e0b);
    border-radius: 50%;
    opacity: 0;
    filter: blur(0.5px);
    animation: float-spark 15s infinite linear;
}

[data-theme="dark"] .spark {
    opacity: 0.3;
}

@keyframes float-spark {
    0% {
        transform: translateY(0) translateX(0) scale(0.5);
        opacity: 0;
    }
    10% {
        opacity: 0.15;
    }
    90% {
        opacity: 0.15;
    }
    100% {
        transform: translateY(-110vh) translateX(80px) scale(1.2);
        opacity: 0;
    }
}

/* Floating Steel Shapes (I-Beam & Coil Wireframes) */
.steel-shape {
    position: absolute;
    opacity: 0.04;
    transition: opacity var(--transition-normal);
}

[data-theme="dark"] .steel-shape {
    opacity: 0.08;
}

.steel-shape.ibeam {
    width: 60px;
    height: 90px;
    border-top: 3px solid #0ea5e9;
    border-bottom: 3px solid #0ea5e9;
    display: flex;
    justify-content: center;
    animation: drift-shape-1 40s infinite linear;
}

.steel-shape.ibeam::after {
    content: '';
    width: 3px;
    height: 100%;
    background-color: #0ea5e9;
}

.steel-shape.coil {
    width: 90px;
    height: 90px;
    border: 3px solid #2563eb;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    animation: drift-shape-2 50s infinite linear;
}

.steel-shape.coil::after {
    content: '';
    width: 50px;
    height: 50px;
    border: 2px solid rgba(37, 99, 235, 0.4);
    border-radius: 50%;
}

@keyframes drift-shape-1 {
    0% {
        transform: rotate(0deg) translate(0, 0);
    }
    50% {
        transform: rotate(180deg) translate(60px, 40px);
    }
    100% {
        transform: rotate(360deg) translate(0, 0);
    }
}

@keyframes drift-shape-2 {
    0% {
        transform: rotate(0deg) translate(0, 0);
    }
    50% {
        transform: rotate(-180deg) translate(-40px, 60px);
    }
    100% {
        transform: rotate(-360deg) translate(0, 0);
    }
}