/* ============================================
   GLOBAL STYLES & VARIABLES
   ============================================ */

:root {
    /* Colors */
    --primary-color: #00d4ff;
    --primary-dark: #0066cc;
    --secondary-color: #6b63ff;
    --accent-color: #ff6b6b;
    --success-color: #26de81;
    --warning-color: #fed330;
    --danger-color: #fc5c65;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #0066cc 100%);
    --gradient-secondary: linear-gradient(135deg, #6b63ff 0%, #00d4ff 100%);
    --gradient-dark: linear-gradient(135deg, #1e1e2e 0%, #2d2d44 100%);
    
    /* Neutral Colors */
    --white: #ffffff;
    --light: #f5f7fa;
    --dark: #1e1e2e;
    --gray-light: #eceff4;
    --gray: #8c92ac;
    --gray-dark: #2d3748;
    
    /* Typography */
    --font-primary: 'Cairo', sans-serif;
    --font-secondary: 'Roboto', sans-serif;
    --font-size-base: 16px;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 600;
    --font-weight-bold: 700;
    --font-weight-extra-bold: 900;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Transitions */
    --transition-fast: 0.3s ease;
    --transition-normal: 0.5s ease;
    --transition-slow: 0.8s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.3);
}

/* Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    color: var(--gray-dark);
    background-color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ============================================
   LANGUAGE SWITCHER
   ============================================ */

.language-switcher {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 2000;
    display: flex;
    gap: 8px;
    background: var(--white);
    padding: 10px;
    border-radius: 30px;
    box-shadow: var(--shadow-md);
}

.lang-btn {
    width: 45px;
    height: 45px;
    border: none;
    border-radius: 50%;
    background: var(--gray-light);
    color: var(--dark);
    font-weight: var(--font-weight-bold);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.lang-btn.active {
    background: var(--gradient-primary);
    color: var(--white);
    transform: scale(1.1);
}

.lang-btn:hover {
    transform: scale(1.05);
}

/* ============================================
   NAVIGATION BAR
   ============================================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--white);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-sm) 0;
    transition: all var(--transition-fast);
}

.navbar.scrolled {
    padding: var(--spacing-xs) 0;
    box-shadow: var(--shadow-lg);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    min-width: 200px;
}

.logo-svg {
    width: 50px;
    height: 50px;
    filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.3));
}

.company-name h3 {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.company-name p {
    font-size: 0.85rem;
    color: var(--gray);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
}

.nav-menu a {
    color: var(--gray-dark);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    right: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-fast);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--gray-dark);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

/* Mobile Menu */
@media (max-width: 768px) {
    .nav-menu {
        position: absolute;
        top: 100%;
        right: 0;
        left: 0;
        flex-direction: column;
        gap: 0;
        background: var(--white);
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-normal);
    }

    .nav-menu.active {
        max-height: 500px;
    }

    .nav-menu li {
        border-bottom: 1px solid var(--gray-light);
    }

    .nav-menu a {
        display: block;
        padding: var(--spacing-md);
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(10px, 10px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    .logo-section {
        min-width: auto;
    }

    .company-name {
        display: none;
    }
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    margin-top: 70px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.05) 0%, rgba(102, 99, 255, 0.05) 100%);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
    overflow: hidden;
}

.animated-shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.shape-1 {
    width: 400px;
    height: 400px;
    background: var(--primary-color);
    top: -100px;
    right: -100px;
}

.shape-2 {
    width: 300px;
    height: 300px;
    background: var(--secondary-color);
    bottom: -50px;
    right: 50px;
    animation-delay: 2s;
}

.shape-3 {
    width: 200px;
    height: 200px;
    background: var(--accent-color);
    top: 50%;
    left: -50px;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--dark);
}

.hero-title {
    font-size: clamp(2rem, 8vw, 4.5rem);
    font-weight: var(--font-weight-extra-bold);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: slideInUp 0.8s ease;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--gray);
    margin-bottom: var(--spacing-xl);
    animation: slideInUp 0.8s ease 0.2s backwards;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    margin-bottom: var(--spacing-xxl);
    animation: slideInUp 0.8s ease 0.4s backwards;
    flex-wrap: wrap;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xxl);
    padding-top: var(--spacing-xl);
    border-top: 2px solid rgba(0, 212, 255, 0.2);
}

.stat-item {
    text-align: center;
    animation: slideInUp 0.8s ease 0.6s backwards;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: var(--font-weight-extra-bold);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--gray);
    font-size: 0.95rem;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.2);
    transition: left var(--transition-fast);
    z-index: -1;
}

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

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 212, 255, 0.6);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px);
}

.btn-small {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.9rem;
}

.btn-lg {
    padding: var(--spacing-lg) var(--spacing-xxl);
    font-size: 1.1rem;
}

/* ============================================
   SECTION HEADERS
   ============================================ */

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: var(--font-weight-extra-bold);
    color: var(--dark);
    margin-bottom: var(--spacing-md);
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.section-header p {
    font-size: 1.2rem;
    color: var(--gray);
}

/* ============================================
   ABOUT SECTION
   ============================================ */

.about {
    padding: var(--spacing-xxl) 0;
    background: var(--light);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}

.about-text h3,
.about-values h3 {
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    color: var(--dark);
    margin-bottom: var(--spacing-lg);
}

.about-text p {
    font-size: 1.05rem;
    color: var(--gray-dark);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.about-boxes {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.about-box {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-fast);
}

.about-box:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.about-box i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.about-box h4 {
    font-size: 1.3rem;
    color: var(--dark);
    margin-bottom: var(--spacing-sm);
}

.about-box p {
    font-size: 0.95rem;
    color: var(--gray);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: var(--spacing-lg);
}

.value-card {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
    border: 2px solid transparent;
}

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

.value-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.value-card h4 {
    font-size: 1.1rem;
    color: var(--dark);
    margin-bottom: var(--spacing-sm);
}

.value-card p {
    font-size: 0.9rem;
    color: var(--gray);
}

@media (max-width: 768px) {
    .about-content {
        grid-template-columns: 1fr;
    }

    .about-boxes {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   SERVICES SECTION
   ============================================ */

.services {
    padding: var(--spacing-xxl) 0;
}

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

.service-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-fast);
    border-top: 4px solid var(--primary-color);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: -50px;
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    opacity: 0.05;
    border-radius: 50%;
    transition: all var(--transition-normal);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.service-card:hover::before {
    right: -30px;
}

.service-icon {
    font-size: 3rem;
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: 12px;
    margin-bottom: var(--spacing-lg);
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.service-card h3 {
    font-size: 1.5rem;
    color: var(--dark);
    margin-bottom: var(--spacing-md);
}

.service-card > p {
    color: var(--gray);
    margin-bottom: var(--spacing-lg);
}

.service-features {
    list-style: none;
    font-size: 0.95rem;
}

.service-features li {
    padding: var(--spacing-xs) 0;
    color: var(--gray-dark);
    position: relative;
    padding-right: var(--spacing-md);
}

.service-features li::before {
    content: '✓';
    position: absolute;
    right: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* ============================================
   PRODUCTS SECTION
   ============================================ */

.products {
    padding: var(--spacing-xxl) 0;
    background: var(--light);
}

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

.product-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-fast);
    display: flex;
    flex-direction: column;
}

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

.product-header {
    background: var(--gradient-primary);
    color: var(--white);
    padding: var(--spacing-xl);
    text-align: center;
}

.product-header i {
    font-size: 2.5rem;
    display: block;
    margin-bottom: var(--spacing-md);
}

.product-header h3 {
    font-size: 1.3rem;
    margin: 0;
}

.product-features {
    padding: var(--spacing-xl);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.product-features p {
    font-weight: var(--font-weight-medium);
    color: var(--dark);
    margin-bottom: var(--spacing-md);
}

.product-features ul {
    list-style: none;
    flex-grow: 1;
}

.product-features li {
    padding: var(--spacing-xs) 0;
    color: var(--gray-dark);
    position: relative;
    padding-right: var(--spacing-md);
    font-size: 0.95rem;
}

.product-features li::before {
    content: '→';
    position: absolute;
    right: 0;
    color: var(--primary-color);
}

.product-card .btn {
    margin-top: var(--spacing-lg);
    align-self: flex-start;
}

/* ============================================
   INDUSTRIES SECTION
   ============================================ */

.industries {
    padding: var(--spacing-xxl) 0;
}

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

.industry-card {
    background: var(--gradient-primary);
    color: var(--white);
    padding: var(--spacing-xl);
    border-radius: 12px;
    text-align: center;
    transition: all var(--transition-fast);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.industry-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: all var(--transition-normal);
}

.industry-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.industry-card:hover::before {
    top: -10%;
    right: -10%;
}

.industry-card i {
    font-size: 3rem;
    display: block;
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.industry-card h4 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
    position: relative;
    z-index: 1;
}

.industry-card p {
    font-size: 0.95rem;
    opacity: 0.95;
    position: relative;
    z-index: 1;
}

/* ============================================
   TECHNOLOGIES SECTION
   ============================================ */

.technologies {
    padding: var(--spacing-xxl) 0;
    background: var(--light);
}

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

.tech-item {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow-sm));
    transition: all var(--transition-fast);
    border-left: 4px solid var(--primary-color);
}

.tech-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.tech-item h4 {
    font-size: 1.3rem;
    color: var(--dark);
    margin-bottom: var(--spacing-sm);
}

.tech-item p {
    color: var(--gray);
    font-size: 0.95rem;
}

/* ============================================
   GROWTH SECTION
   ============================================ */

.growth {
    padding: var(--spacing-xxl) 0;
}

.growth-timeline {
    position: relative;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    padding: var(--spacing-xl);
}

.growth-timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    width: 4px;
    height: 100%;
    background: var(--gradient-primary);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    padding: var(--spacing-lg);
    background: var(--light);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.timeline-marker {
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--white);
    border: 4px solid var(--primary-color);
    border-radius: 50%;
    top: var(--spacing-lg);
    right: -60px;
    transform: translateX(50%);
}

.timeline-content h3 {
    color: var(--dark);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
}

.timeline-content p {
    color: var(--gray);
}

@media (max-width: 768px) {
    .growth-timeline::before {
        left: 0;
    }

    .timeline-marker {
        right: auto;
        left: -60px;
    }
}

/* ============================================
   CONTACT SECTION
   ============================================ */

.contact {
    padding: var(--spacing-xxl) 0;
    background: var(--light);
}

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

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

.contact-method {
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
}

.contact-method i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-top: var(--spacing-xs);
}

.contact-method h4 {
    color: var(--dark);
    margin-bottom: var(--spacing-sm);
}

.contact-method p {
    color: var(--gray);
}

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

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

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

.form-group {
    position: relative;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--gray-light);
    border-radius: 8px;
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: all var(--transition-fast);
    background: var(--white);
    color: var(--dark);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

@media (max-width: 768px) {
    .contact-content {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    background: var(--dark);
    color: var(--white);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}

.footer-section p,
.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    transition: color var(--transition-fast);
}

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

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

.footer-section ul li {
    padding: var(--spacing-xs) 0;
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    color: var(--primary-color);
    transition: all var(--transition-fast);
}

.social-icon:hover {
    background: var(--primary-color);
    color: var(--dark);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* ============================================
   SCROLL TO TOP BUTTON
   ============================================ */

.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    z-index: 999;
    box-shadow: var(--shadow-lg);
}

.scroll-to-top.show {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1024px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .services-grid,
    .products-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }

    .about-content {
        gap: var(--spacing-lg);
    }

    .hero-buttons {
        gap: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-xl: 2rem;
        --spacing-xxl: 3rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .services-grid,
    .products-grid {
        grid-template-columns: 1fr;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .nav-menu a::after {
        display: none;
    }

    .growth-timeline {
        grid-template-columns: 1fr;
        padding: var(--spacing-lg) 0;
    }

    .growth-timeline::before {
        width: 4px;
        height: 100%;
        left: 0;
    }

    .timeline-marker {
        left: -60px;
        right: auto;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .hero-stats {
        grid-template-columns: 1fr;
    }

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

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

    .scroll-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
}

/* ============================================
   ANIMATIONS
   ============================================ */

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

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

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

.text-dark {
    color: var(--dark);
}

.text-gray {
    color: var(--gray);
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}