/* ==========================================
   CSS Variables - Design System
   ========================================== */
:root {
    /* Colors */
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary: #10b981;
    --accent: #f59e0b;
    
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-dark: #111827;
    
    --border-color: #e5e7eb;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    --gradient-secondary: linear-gradient(135deg, #10b981 0%, #34d399 100%);
    --gradient-hero: linear-gradient(135deg, #1e40af 0%, #2563eb 50%, #3b82f6 100%);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --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);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease;
}

/* ==========================================
   Base Styles
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-family);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
    list-style: none;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

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

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
}

/* ==========================================
   Navigation
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-lg);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
}

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

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 800;
    color: var(--primary);
}

.logo-accent {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
}

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

.nav-list {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-link {
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s ease;
}

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: var(--spacing-xs);
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-list {
        flex-direction: column;
        gap: var(--spacing-md);
        width: 100%;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
}

/* ==========================================
   Buttons
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: var(--font-size-base);
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    border-color: var(--primary);
    color: var(--primary);
}

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

.btn-light {
    background: white;
    color: var(--primary);
    box-shadow: var(--shadow-md);
}

.btn-light:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline-light {
    background: transparent;
    border-color: white;
    color: white;
}

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

.btn-lg {
    padding: 1rem 2rem;
    font-size: var(--font-size-lg);
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl) 0 var(--spacing-2xl);
    overflow: hidden;
    margin-top: 70px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-hero);
    opacity: 0.05;
    z-index: -1;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

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

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-3xl);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-3xl);
    padding: var(--spacing-xl) 0;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    gap: 4px;
    animation: bounce 2s infinite;
}

.scroll-indicator span {
    width: 2px;
    height: 8px;
    background: var(--primary);
    border-radius: var(--radius-full);
    animation: scroll 1.5s infinite;
}

.scroll-indicator span:nth-child(2) {
    animation-delay: 0.2s;
}

.scroll-indicator span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-10px); }
}

@keyframes scroll {
    0% { opacity: 0; transform: scaleY(0); }
    50% { opacity: 1; transform: scaleY(1); }
    100% { opacity: 0; transform: scaleY(1); }
}

/* ==========================================
   Animations
   ========================================== */
.fade-in {
    animation: fadeIn 0.8s ease forwards;
    opacity: 0;
}

.fade-in-delay-1 {
    animation: fadeIn 0.8s ease 0.2s forwards;
    opacity: 0;
}

.fade-in-delay-2 {
    animation: fadeIn 0.8s ease 0.4s forwards;
    opacity: 0;
}

.fade-in-delay-3 {
    animation: fadeIn 0.8s ease 0.6s forwards;
    opacity: 0;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================
   Section Styles
   ========================================== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section-subtitle {
    display: inline-block;
    color: var(--primary);
    font-weight: 600;
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-size: clamp(1.875rem, 4vw, 2.5rem);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.section-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ==========================================
   Features Section
   ========================================== */
.features {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
}

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

.feature-card {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.feature-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-2xl);
    color: white;
}

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

.feature-description {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ==========================================
   Products Preview Section
   ========================================== */
.products-preview {
    padding: var(--spacing-3xl) 0;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.product-card {
    position: relative;
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 2px solid transparent;
}

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

.product-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: var(--gradient-primary);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
}

.product-image {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-3xl);
    color: var(--primary);
}

.product-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.product-description {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

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

.product-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.product-features i {
    color: var(--secondary);
    font-size: var(--font-size-sm);
}

/* ==========================================
   Services Home Section
   ========================================== */
.services-home {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
}

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

.service-card {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.service-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-2xl);
    color: var(--primary);
}

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

.service-description {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

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

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

/* ==========================================
   CTA Section
   ========================================== */
.cta {
    padding: var(--spacing-3xl) 0;
    background: var(--gradient-primary);
    color: white;
    text-align: center;
}

.cta-title {
    font-size: clamp(1.875rem, 4vw, 2.5rem);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
}

.cta-description {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
}

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

/* ==========================================
   Footer
   ========================================== */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.footer-logo .logo-text {
    color: white;
}

.footer-logo .logo-accent {
    color: var(--primary-light);
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

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

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

.social-links a:hover {
    background: var(--primary);
    transform: translateY(-4px);
}

.footer-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.footer-links li,
.footer-contact li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

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

.footer-contact li {
    display: flex;
    gap: var(--spacing-sm);
    color: rgba(255, 255, 255, 0.7);
}

.footer-contact i {
    color: var(--primary-light);
    margin-top: 4px;
}

.footer-contact a {
    color: rgba(255, 255, 255, 0.7);
}

.footer-contact a:hover {
    color: white;
}

.footer-bottom {
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
}

/* ==========================================
   Page Header (Products, Services, About, Contact)
   ========================================== */
.page-header {
    padding: calc(70px + var(--spacing-3xl)) 0 var(--spacing-2xl);
    background: var(--gradient-primary);
    color: white;
    text-align: center;
}

.page-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
}

.page-subtitle {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    max-width: 700px;
    margin: 0 auto;
}

/* ==========================================
   Product Detail Section
   ========================================== */
.product-detail {
    padding: var(--spacing-3xl) 0;
}

.product-detail.alt-bg {
    background: var(--bg-secondary);
}

.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    margin-bottom: var(--spacing-3xl);
}

.product-detail-grid.reverse {
    direction: rtl;
}

.product-detail-grid.reverse > * {
    direction: ltr;
}

.product-detail-content {
    max-width: 100%;
}

.product-badge-large {
    display: inline-block;
    background: var(--gradient-primary);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: var(--spacing-md);
}

.product-badge-large.secondary {
    background: var(--gradient-secondary);
}

.product-detail-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.product-detail-subtitle {
    font-size: var(--font-size-xl);
    color: var(--primary);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.product-detail-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.product-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.highlight-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius);
    align-items: flex-start;
}

.highlight-item i {
    font-size: var(--font-size-2xl);
    color: var(--primary);
    flex-shrink: 0;
    margin-top: 4px;
}

.highlight-item h4 {
    font-size: var(--font-size-base);
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.highlight-item p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.product-cta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.product-detail-image {
    position: relative;
}

.image-placeholder {
    width: 100%;
    aspect-ratio: 1;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 6rem;
    color: var(--primary);
    box-shadow: var(--shadow-xl);
}

/* ==========================================
   Product Features Section
   ========================================== */
.product-features-section {
    margin-top: var(--spacing-3xl);
}

.features-section-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
}

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

.product-feature-card {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.product-feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-icon-small {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-xl);
    color: white;
}

.feature-icon-small.secondary {
    background: var(--gradient-secondary);
}

.product-feature-card h4 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.product-feature-card ul {
    list-style: none;
    padding: 0;
}

.product-feature-card ul li {
    padding-left: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
    position: relative;
}

.product-feature-card ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary);
    font-weight: bold;
}

/* ==========================================
   Tech Stack Section
   ========================================== */
.tech-stack-section {
    margin-top: var(--spacing-3xl);
    padding: var(--spacing-xl);
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
}

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

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

.tech-item i {
    font-size: var(--font-size-3xl);
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.tech-item h4 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.tech-item p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* ==========================================
   Benefits Section
   ========================================== */
.benefits-section {
    margin-top: var(--spacing-3xl);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.benefit-card {
    text-align: center;
    padding: var(--spacing-xl);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.benefit-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.benefit-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-secondary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    font-size: var(--font-size-2xl);
    color: white;
}

.benefit-card h4 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.benefit-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ==========================================
   Back to Top Button
   ========================================== */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
    z-index: 999;
}

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

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 768px) {
    .hero {
        min-height: auto;
        padding: var(--spacing-2xl) 0;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid,
    .products-grid,
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-card {
        display: grid;
        grid-template-columns: auto 1fr;
        grid-template-rows: auto auto;
        gap: var(--spacing-md) var(--spacing-md);
    }
    
    .feature-card .feature-icon {
        grid-column: 1;
        grid-row: 1;
        margin-bottom: 0;
    }
    
    .feature-card .feature-title {
        grid-column: 2;
        grid-row: 1;
        align-self: center;
        margin-bottom: 0;
    }
    
    .feature-card .feature-description {
        grid-column: 1 / -1;
        grid-row: 2;
    }
    
    .product-card {
        display: grid;
        grid-template-columns: auto 1fr;
        grid-template-rows: auto auto auto auto auto;
        gap: var(--spacing-md) var(--spacing-md);
    }
    
    .product-card .product-badge {
        grid-column: 1 / -1;
        grid-row: 1;
        justify-self: end;
        position: relative;
        top: 0;
        right: 0;
    }
    
    .product-card .product-image {
        grid-column: 1;
        grid-row: 2;
        margin-bottom: 0;
    }
    
    .product-card .product-title {
        grid-column: 2;
        grid-row: 2;
        align-self: center;
        margin-bottom: 0;
    }
    
    .product-card .product-description {
        grid-column: 1 / -1;
        grid-row: 3;
    }
    
    .product-card .product-features {
        grid-column: 1 / -1;
        grid-row: 4;
    }
    
    .product-card .btn {
        grid-column: 1 / -1;
        grid-row: 5;
    }
    
    .service-card {
        display: grid;
        grid-template-columns: auto 1fr;
        grid-template-rows: auto auto auto;
        gap: var(--spacing-md) var(--spacing-md);
    }
    
    .service-card .service-icon {
        grid-column: 1;
        grid-row: 1;
        margin-bottom: 0;
    }
    
    .service-card .service-title {
        grid-column: 2;
        grid-row: 1;
        align-self: center;
        margin-bottom: 0;
    }
    
    .service-card .service-description {
        grid-column: 1 / -1;
        grid-row: 2;
    }
    
    .service-card .service-link {
        grid-column: 1 / -1;
        grid-row: 3;
    }
    
    .product-detail-grid {
        grid-template-columns: 1fr;
    }
    
    .product-highlights {
        grid-template-columns: 1fr;
    }
    
    .product-cta {
        flex-direction: column;
    }
    
    .product-cta .btn {
        width: 100%;
        justify-content: center;
    }
    
    .image-placeholder {
        font-size: 4rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-section {
        text-align: center;
    }
    
    .footer-logo {
        justify-content: center;
    }
    
    .footer-contact {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .footer-contact li {
        justify-content: center;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
}

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