/* =============================================
   Lab Chemicals & Scientific Company
   Modern Responsive Website Styles
   ============================================= */

/* CSS Variables */
:root {
    /* Primary Colors - Modern Scientific Blue Theme */
    --primary-blue: #0066cc;
    --primary-dark: #004499;
    --primary-light: #e6f2ff;
    --secondary-blue: #0099ff;
    
    /* Modern Accent Colors */
    --accent-cyan: #00bcd4;
    --accent-purple: #9c27b0;
    --accent-orange: #ff9800;
    --accent-teal: #17a2b8;
    
    /* Gradient Colors */
    --gradient-primary: linear-gradient(135deg, #0066cc 0%, #00bcd4 100%);
    --gradient-dark: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    --gradient-hero: linear-gradient(135deg, #004499 0%, #0066cc 50%, #0099ff 100%);
    
    /* Neutral Colors */
    --white: #ffffff;
    --off-white: #f8f9fa;
    --light-gray: #e9ecef;
    --medium-gray: #6c757d;
    --dark-gray: #343a40;
    --black: #212529;
    
    /* Accent Colors */
    --success: #28a745;
    --warning: #ffc107;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 5rem;
    
    /* Typography */
    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-size-xs: 0.875rem;
    --font-size-sm: 1rem;
    --font-size-md: 1.125rem;
    --font-size-lg: 1.5rem;
    --font-size-xl: 2rem;
    --font-size-xxl: 2.5rem;
    --font-size-hero: 3.5rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
    --radius-round: 50%;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 12px 40px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
    color: var(--black);
    background-color: var(--white);
    overflow-x: hidden;
}

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

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

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

ul {
    list-style: none;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* =============================================
   Header & Navigation
   ============================================= */
.header {
    background: var(--white);
    box-shadow: var(--shadow-sm);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
    font-weight: bold;
}

.logo-text {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--primary-dark);
    line-height: 1.2;
}

.logo-text span {
    display: block;
    font-size: var(--font-size-xs);
    font-weight: 400;
    color: var(--medium-gray);
}

/* Navigation */
.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--dark-gray);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-blue);
    transition: var(--transition-normal);
    transform: translateX(-50%);
}

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
}

/* Navigation Dropdown */
.nav-dropdown {
    position: relative;
}

.nav-dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--white);
    min-width: 200px;
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-md);
    padding: var(--spacing-xs) 0;
    z-index: 1000;
}

.nav-dropdown:hover .nav-dropdown-content {
    display: block;
}

.nav-dropdown-content a {
    display: block;
    padding: var(--spacing-xs) var(--spacing-md);
    color: var(--dark-gray);
    font-size: var(--font-size-sm);
    transition: var(--transition-fast);
}

.nav-dropdown-content a:hover {
    background: var(--primary-light);
    color: var(--primary-blue);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-blue);
    border-radius: 2px;
    transition: var(--transition-fast);
}

/* =============================================
   Hero Section
   ============================================= */
.hero {
    padding: calc(80px + var(--spacing-xxl)) 0 var(--spacing-xxl);
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--white) 50%, var(--primary-light) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 102, 204, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 153, 255, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.hero-title {
    font-size: var(--font-size-hero);
    font-weight: 700;
    color: #ffffff;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.hero-title span {
    color: #4fc3f7;
}

.hero-subtitle {
    font-size: var(--font-size-md);
    color: #ffffff;
    margin-bottom: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* =============================================
   Hero Slider
   ============================================= */
.hero-slider {
    position: relative;
    overflow: hidden;
    height: 600px;
}

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

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.slide.active {
    opacity: 1;
    visibility: visible;
}

.slide .hero-content {
    padding: 80px 0;
}

/* Slider Arrows */
.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    color: white;
    font-size: 1.25rem;
    cursor: pointer;
    transition: var(--transition-normal);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slider-arrow:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: white;
    transform: translateY(-50%) scale(1.1);
}

.slider-arrow-left {
    left: 20px;
}

.slider-arrow-right {
    right: 20px;
}

/* Slider Dots */
.slider-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 100;
}

.dot {
    width: 12px;
    height: 12px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition-normal);
    border: none;
}

.dot:hover {
    background: rgba(255, 255, 255, 0.8);
}

.dot.active {
    background: white;
    transform: scale(1.2);
}

/* Responsive Slider */
@media (max-width: 768px) {
    .hero-slider {
        height: 500px;
    }
    
    .slider-arrow {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .slider-arrow-left {
        left: 10px;
    }
    
    .slider-arrow-right {
        right: 10px;
    }
}

/* =============================================
   Buttons
   ============================================= */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-normal);
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background: var(--primary-light);
    border-color: var(--primary-light);
    color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: transparent;
    color: #ffffff;
    border-color: #ffffff;
}

.btn-secondary:hover {
    background: #ffffff;
    color: var(--primary-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--dark-gray);
    border-color: var(--light-gray);
}

.btn-outline:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

/* =============================================
   Features Section
   ============================================= */
.features {
    padding: var(--spacing-xxl) 0;
    background: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: var(--transition-normal);
    border: 1px solid var(--light-gray);
}

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

.feature-icon {
    width: 70px;
    height: 70px;
    background: var(--primary-light);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    font-size: 2rem;
    color: var(--primary-blue);
    transition: var(--transition-normal);
}

.feature-card:hover .feature-icon {
    background: var(--primary-blue);
    color: var(--white);
}

.feature-title {
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-xs);
}

.feature-text {
    font-size: var(--font-size-sm);
    color: var(--medium-gray);
    line-height: 1.7;
}

/* =============================================
   Section Styles
   ============================================= */
.section {
    padding: var(--spacing-xxl) 0;
}

.section-alt {
    background: #1a1a2e;
    color: #ffffff;
}

.section-alt .section-title,
.section-alt .section-subtitle {
    color: #ffffff;
}

.section-alt .feature-card,
.section-alt .product-card {
    background: #2d2d44;
    color: #ffffff;
}

.section-alt .feature-title,
.section-alt .product-title {
    color: #ffffff;
}

.section-alt .feature-text,
.section-alt .product-description {
    color: #cccccc;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
}

.section-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: var(--font-size-sm);
    color: var(--medium-gray);
    line-height: 1.7;
}

/* =============================================
   Products Section
   ============================================= */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.product-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    border: 1px solid var(--light-gray);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.product-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--off-white) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--primary-blue);
    position: relative;
    overflow: hidden;
}

.product-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(45deg, transparent 40%, rgba(255,255,255,0.3) 50%, transparent 60%);
    transform: translateX(-100%);
    transition: var(--transition-slow);
}

.product-card:hover .product-image::before {
    transform: translateX(100%);
}

.product-content {
    padding: var(--spacing-md);
}

.product-category {
    font-size: var(--font-size-xs);
    color: var(--primary-blue);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-xs);
}

.product-title {
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-xs);
}

.product-description {
    font-size: var(--font-size-sm);
    color: var(--medium-gray);
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

.product-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
    color: var(--primary-blue);
}

.product-link:hover {
    gap: var(--spacing-sm);
}

/* =============================================
   About Section
   ============================================= */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image-main {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 8rem;
    color: var(--white);
    opacity: 0.9;
}

.about-image-accent {
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 150px;
    height: 150px;
    background: var(--primary-light);
    border-radius: var(--radius-lg);
    border: 4px solid var(--white);
    box-shadow: var(--shadow-md);
}

.about-content h2 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: var(--spacing-md);
}

.about-content p {
    font-size: var(--font-size-sm);
    color: var(--medium-gray);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.about-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--dark-gray);
}

.about-feature i {
    color: var(--success);
    font-size: 1rem;
}

/* =============================================
   Stats Section
   ============================================= */
.stats {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-blue) 100%);
    color: var(--white);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    text-align: center;
}

.stat-item {
    padding: var(--spacing-md);
}

.stat-number {
    font-size: var(--font-size-xxl);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

/* =============================================
   Industries Section
   ============================================= */
.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.industry-card {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    border: 1px solid var(--light-gray);
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.industry-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.industry-icon {
    width: 60px;
    height: 60px;
    background: var(--primary-light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary-blue);
    flex-shrink: 0;
}

.industry-card:hover .industry-icon {
    background: var(--primary-blue);
    color: var(--white);
}

.industry-content h3 {
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-xs);
}

.industry-content p {
    font-size: var(--font-size-sm);
    color: var(--medium-gray);
    line-height: 1.6;
}

/* =============================================
   Why Choose Us Section
   ============================================= */
.why-choose {
    background: #1a1a2e;
    color: #ffffff;
}

.why-choose .section-title,
.why-choose .section-subtitle {
    color: #ffffff;
}

.why-choose-item {
    background: #2d2d44;
    color: #ffffff;
}

.why-choose-item h3 {
    color: #ffffff;
}

.why-choose-item p {
    color: #cccccc;
}

.why-choose-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.why-choose-item {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: var(--transition-normal);
}

.why-choose-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.why-choose-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    font-size: 2rem;
    color: var(--white);
}

.why-choose-item h3 {
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-xs);
}

.why-choose-item p {
    font-size: var(--font-size-sm);
    color: var(--medium-gray);
    line-height: 1.6;
}

/* =============================================
   Contact Section
   ============================================= */
.contact {
    background: var(--white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-xl);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-card {
    background: var(--off-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-blue);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--white);
    flex-shrink: 0;
}

.contact-details h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-xs);
}

.contact-details p {
    font-size: var(--font-size-sm);
    color: var(--medium-gray);
    line-height: 1.6;
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--off-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
}

.contact-form h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-lg);
}

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

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-xs);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-family: var(--font-primary);
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-md);
    background: var(--white);
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px var(--primary-light);
}

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

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

/* =============================================
   Footer
   ============================================= */
.footer {
    background: var(--primary-dark);
    color: var(--white);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand p {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
    margin-top: var(--spacing-md);
    line-height: 1.7;
}

.footer-title {
    font-size: var(--font-size-md);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    position: relative;
    padding-bottom: var(--spacing-xs);
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--secondary-blue);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-sm);
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-links a i {
    font-size: 12px;
    width: 16px;
}

.footer-links a:hover {
    color: var(--white);
    padding-left: var(--spacing-xs);
}

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: var(--transition-fast);
}

.footer-social a:hover {
    background: var(--primary-blue);
    transform: translateY(-3px);
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
}

/* =============================================
   Page Header
   ============================================= */
.page-header {
    padding: calc(80px + var(--spacing-xxl)) 0 var(--spacing-xl);
    background: linear-gradient(135deg, #004499 0%, #0066cc 50%, #0099ff 100%);
    background-size: cover;
    background-position: center;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="2"/><circle cx="50" cy="50" r="30" fill="none" stroke="rgba(255,255,255,0.03)" stroke-width="2"/><circle cx="50" cy="50" r="20" fill="none" stroke="rgba(255,255,255,0.02)" stroke-width="2"/></svg>');
    background-size: 200px 200px;
    opacity: 0.5;
}

.page-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(to top, rgba(0,0,0,0.1), transparent);
}

.page-header h1 {
    font-size: var(--font-size-xxl);
    font-weight: 700;
    color: white;
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
    position: relative;
    z-index: 1;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
}

.breadcrumb a {
    color: white;
}

.breadcrumb a:hover {
    color: var(--secondary-blue);
}

.breadcrumb span {
    color: rgba(255, 255, 255, 0.6);
}

/* =============================================
   Products Page
   ============================================= */
.products-categories {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-bottom: var(--spacing-xl);
}

.category-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--white);
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-xl);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--dark-gray);
    cursor: pointer;
    transition: var(--transition-fast);
}

.category-btn:hover,
.category-btn.active {
    background: var(--primary-blue);
    border-color: var(--primary-blue);
    color: var(--white);
}

/* =============================================
   Responsive Styles
   ============================================= */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-hero: 2rem;
        --font-size-xxl: 2rem;
        --font-size-xl: 1.75rem;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-md);
        gap: var(--spacing-sm);
        transform: translateY(-150%);
        transition: var(--transition-normal);
        opacity: 0;
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
    }
    
    .nav-link {
        width: 100%;
        text-align: center;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-title::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .footer-social {
        justify-content: center;
    }
    
    .about-image-main {
        height: 300px;
        font-size: 5rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-xxl: 3rem;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .features-grid,
    .products-grid,
    .industries-grid,
    .why-choose-grid {
        grid-template-columns: 1fr;
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
}

/* =============================================
   Animations
   ============================================= */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

.animate-fade-in {
    animation: fadeIn 0.6s ease forwards;
}

/* Staggered animation delays */
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }
.delay-6 { animation-delay: 0.6s; }

/* Utility Classes */
.text-center { text-align: center; }
.text-primary { color: var(--primary-blue); }
.text-secondary { color: var(--medium-gray); }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

/* =============================================
   Modern Enhancements
   ============================================= */

/* Modern Card Hover Effects */
.feature-card, .product-card, .industry-card, .why-choose-item {
    position: relative;
    overflow: hidden;
}

.feature-card::before, .product-card::before, .industry-card::before, .why-choose-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: 0.5s;
}

.feature-card:hover::before, .product-card:hover::before, .industry-card:hover::before, .why-choose-item:hover::before {
    left: 100%;
}

/* Modern Button Styles */
.btn {
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: 0.5s;
    z-index: -1;
}

.btn:hover::before {
    left: 100%;
}

/* Modern Section Dividers */
.section {
    position: relative;
}

.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--light-gray), transparent);
}

/* Modern Gradient Text */
.gradient-text {
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Modern Badge */
.badge {
    display: inline-block;
    padding: 4px 12px;
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-cyan));
    color: white;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

/* Modern Icon Boxes */
.icon-box {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-light), white);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary-blue);
    box-shadow: 0 4px 15px rgba(0, 102, 204, 0.1);
}

/* Modern Floating Animation */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.float-animation {
    animation: float 3s ease-in-out infinite;
}

/* Modern Pulse Animation */
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.pulse-animation {
    animation: pulse 2s ease-in-out infinite;
}

/* Modern Card Shine Effect */
.card-shine {
    position: relative;
    overflow: hidden;
}

.card-shine::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        to right,
        rgba(255,255,255,0) 0%,
        rgba(255,255,255,0.1) 50%,
        rgba(255,255,255,0) 100%
    );
    transform: rotate(30deg);
    transition: 0.5s;
    pointer-events: none;
}

.card-shine:hover::after {
    animation: shine 0.5s;
}

@keyframes shine {
    0% { transform: rotate(30deg) translateX(-100%); }
    100% { transform: rotate(30deg) translateX(100%); }
}

/* Modern Skew Buttons */
.btn-skew {
    transform: skewX(-10deg);
}

.btn-skew span {
    display: inline-block;
    transform: skewX(10deg);
}

/* Modern Glass Effect */
.glass-effect {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Modern Box Shadows */
.shadow-primary {
    box-shadow: 0 10px 40px rgba(0, 102, 204, 0.2);
}

.shadow-hover:hover {
    box-shadow: 0 20px 60px rgba(0, 102, 204, 0.3);
}

/* Modern Border */
.border-gradient {
    border: 2px solid transparent;
    background: linear-gradient(white, white) padding-box,
                linear-gradient(135deg, var(--primary-blue), var(--accent-cyan)) border-box;
}