/* ============================================
   SMARTVISION TECHNOLOGY - Main Stylesheet
   Modern AI Security Solutions Website
   ============================================ */

/* CSS Variables */
:root {
    /* Colors */
    --primary: #0066FF;
    --primary-dark: #0052CC;
    --primary-light: #4D94FF;
    --secondary: #00D4AA;
    --accent: #FF6B35;
    --dark: #0A0E27;
    --dark-light: #1A1F3A;
    --dark-lighter: #2A3050;
    --white: #FFFFFF;
    --gray-100: #F8F9FA;
    --gray-200: #E9ECEF;
    --gray-300: #DEE2E6;
    --gray-400: #CED4DA;
    --gray-500: #ADB5BD;
    --gray-600: #6C757D;
    --gray-700: #495057;
    --gray-800: #343A40;
    --gray-900: #212529;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    --gradient-hero: linear-gradient(135deg, var(--dark) 0%, var(--dark-light) 50%, var(--dark) 100%);
    --gradient-accent: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    
    /* Typography */
    --font-family: 'Prompt', -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;
    --font-size-6xl: 3.75rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    --shadow-glow: 0 0 20px rgba(0, 102, 255, 0.3);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Z-index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal: 300;
    --z-tooltip: 400;
}

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

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--gray-700);
    background-color: var(--white);
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

/* Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
    padding: var(--spacing-md) 0;
    transition: var(--transition-base);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    padding: var(--spacing-sm) 0;
    box-shadow: var(--shadow-md);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--white);
}

.nav-brand i {
    font-size: var(--font-size-2xl);
    color: var(--primary);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--white);
    transition: var(--transition-base);
}

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

.nav-link {
    color: var(--white);
    font-weight: 500;
    font-size: var(--font-size-sm);
    position: relative;
    padding: var(--spacing-xs) 0;
}

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

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

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: var(--gradient-hero);
}

.hero-background {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.4;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(0, 102, 255, 0.2) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(0, 212, 170, 0.15) 0%, transparent 50%),
        linear-gradient(180deg, rgba(10, 14, 39, 0.8) 0%, rgba(10, 14, 39, 0.9) 100%);
}

.hero-particles {
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(0, 102, 255, 0.3) 0%, transparent 2px),
        radial-gradient(circle at 60% 70%, rgba(0, 212, 170, 0.3) 0%, transparent 2px),
        radial-gradient(circle at 80% 20%, rgba(0, 102, 255, 0.2) 0%, transparent 2px);
    background-size: 100px 100px, 150px 150px, 200px 200px;
    animation: particleFloat 20s linear infinite;
}

@keyframes particleFloat {
    0% { transform: translateY(0) rotate(0deg); }
    100% { transform: translateY(-100px) rotate(360deg); }
}

.hero-content {
    position: relative;
    z-index: 1;
    padding: var(--spacing-4xl) 0;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(0, 102, 255, 0.2);
    border: 1px solid rgba(0, 102, 255, 0.3);
    border-radius: var(--radius-full);
    color: var(--primary-light);
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.6s ease;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    color: var(--white);
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.6s ease 0.1s both;
}

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

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--gray-400);
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
    animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-3xl);
    animation: fadeInUp 0.6s ease 0.3s both;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3xl);
    animation: fadeInUp 0.6s ease 0.4s both;
}

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

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--white);
}

.stat-suffix {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--gray-500);
    margin-top: var(--spacing-xs);
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--gray-500);
    font-size: var(--font-size-xs);
    animation: bounce 2s infinite;
}

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--gray-500);
    border-radius: var(--radius-full);
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--gray-500);
    border-radius: var(--radius-full);
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollWheel 1.5s infinite;
}

@keyframes scrollWheel {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(12px); }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

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

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition-base);
    border: none;
}

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

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

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--white);
}

.btn-full {
    width: 100%;
}

/* ============================================
   Section Styles
   ============================================ */
section {
    padding: var(--spacing-4xl) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-3xl);
}

.section-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(0, 102, 255, 0.1);
    color: var(--primary);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--dark);
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--gray-600);
}

/* ============================================
   About Section
   ============================================ */
.about {
    background: var(--gray-100);
}

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

.about-card {
    background: var(--white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    margin-bottom: var(--spacing-xl);
}

.about-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.about-icon i {
    font-size: var(--font-size-2xl);
    color: var(--white);
}

.about-card h3 {
    font-size: var(--font-size-xl);
    color: var(--dark);
    margin-bottom: var(--spacing-md);
}

.about-card p {
    color: var(--gray-600);
    line-height: 1.8;
}

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

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--gray-700);
    font-size: var(--font-size-sm);
}

.feature-item i {
    color: var(--secondary);
}

/* About Image */
.about-image-wrapper {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.about-image {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition-base);
}

.about-image-wrapper:hover .about-image {
    transform: scale(1.05);
}

.image-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-lg);
    background: linear-gradient(0deg, rgba(10, 14, 39, 0.9) 0%, transparent 100%);
}

.overlay-stats {
    display: flex;
    gap: var(--spacing-md);
}

.overlay-stat {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(0, 102, 255, 0.2);
    border: 1px solid rgba(0, 102, 255, 0.3);
    border-radius: var(--radius-md);
    color: var(--white);
    font-size: var(--font-size-sm);
}

.overlay-stat i {
    color: var(--primary);
}

/* ============================================
   Solutions Section
   ============================================ */
.solutions {
    background: var(--white);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.solution-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.solution-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition-base);
}

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

.solution-card:hover::before {
    transform: scaleX(1);
}

.solution-icon {
    width: 70px;
    height: 70px;
    background: rgba(0, 102, 255, 0.1);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    transition: var(--transition-base);
}

.solution-card:hover .solution-icon {
    background: var(--gradient-primary);
}

.solution-icon i {
    font-size: var(--font-size-2xl);
    color: var(--primary);
    transition: var(--transition-base);
}

.solution-card:hover .solution-icon i {
    color: var(--white);
}

.solution-card h3 {
    font-size: var(--font-size-lg);
    color: var(--dark);
    margin-bottom: var(--spacing-md);
}

.solution-card > p {
    color: var(--gray-600);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

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

.solution-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--gray-700);
}

.solution-features i {
    color: var(--secondary);
    font-size: var(--font-size-xs);
}

/* ============================================
   Features Section
   ============================================ */
.features {
    background: var(--gray-100);
}

.features-wrapper {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.feature-tabs {
    display: flex;
    border-bottom: 1px solid var(--gray-200);
    overflow-x: auto;
}

.tab-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    background: none;
    border: none;
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--gray-600);
    cursor: pointer;
    transition: var(--transition-base);
    white-space: nowrap;
}

.tab-btn:hover {
    color: var(--primary);
    background: var(--gray-100);
}

.tab-btn.active {
    color: var(--primary);
    background: rgba(0, 102, 255, 0.05);
    border-bottom: 2px solid var(--primary);
}

.tab-btn i {
    font-size: var(--font-size-lg);
}

.tab-content {
    padding: var(--spacing-2xl);
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.feature-card {
    text-align: center;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
}

.feature-card:hover {
    background: var(--gray-100);
    transform: translateY(-3px);
}

.feature-card .feature-icon {
    width: 60px;
    height: 60px;
    background: rgba(0, 102, 255, 0.1);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
}

.feature-card .feature-icon i {
    font-size: var(--font-size-xl);
    color: var(--primary);
}

.feature-card h4 {
    font-size: var(--font-size-base);
    color: var(--dark);
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
}

/* ============================================
   Products Section
   ============================================ */
.products {
    background: var(--gray-100);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: 300px;
    gap: var(--spacing-lg);
}

.product-card {
    position: relative;
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
}

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

.product-card.large {
    grid-column: span 2;
}

.product-image {
    position: relative;
    height: 65%;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.product-overlay {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
}

.product-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--gradient-primary);
    color: var(--white);
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.product-info {
    padding: var(--spacing-md) var(--spacing-lg);
    height: 35%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.product-info h3 {
    font-size: var(--font-size-base);
    color: var(--dark);
    margin-bottom: var(--spacing-xs);
}

.product-info p {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ============================================
   Portfolio Section
   ============================================ */
.portfolio {
    background: var(--white);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.portfolio-card {
    background: var(--gray-100);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    transition: var(--transition-base);
}

.portfolio-card:hover {
    background: var(--white);
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
}

.portfolio-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.portfolio-icon i {
    font-size: var(--font-size-xl);
    color: var(--white);
}

.portfolio-card h3 {
    font-size: var(--font-size-lg);
    color: var(--dark);
    margin-bottom: var(--spacing-md);
}

.portfolio-card ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.portfolio-card li {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    padding-left: var(--spacing-md);
    position: relative;
}

.portfolio-card li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary);
}

/* ============================================
   Contact Section
   ============================================ */
.contact {
    background: var(--gray-100);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

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

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

.contact-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: rgba(0, 102, 255, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon i {
    font-size: var(--font-size-lg);
    color: var(--primary);
}

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

.contact-details p {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    line-height: 1.7;
}

.contact-form-wrapper {
    background: var(--white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

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

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

.form-group label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: var(--spacing-md);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    transition: var(--transition-base);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

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

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

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

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

.footer-brand p {
    color: var(--gray-500);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-lg);
}

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

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--dark-light);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-base);
}

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

.footer-links h4,
.footer-contact h4 {
    font-size: var(--font-size-base);
    color: var(--white);
    margin-bottom: var(--spacing-lg);
}

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

.footer-links a {
    color: var(--gray-500);
    font-size: var(--font-size-sm);
}

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

.footer-contact p {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--gray-500);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-sm);
}

.footer-contact i {
    color: var(--primary);
    width: 20px;
}

.footer-bottom {
    border-top: 1px solid var(--dark-light);
    padding-top: var(--spacing-lg);
    text-align: center;
}

.footer-bottom p {
    color: var(--gray-600);
    font-size: var(--font-size-sm);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .solutions-grid,
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .product-card.large {
        grid-column: span 2;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--dark);
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-base);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .solutions-grid,
    .features-grid,
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-tabs {
        flex-wrap: wrap;
    }
    
    .tab-btn {
        flex: none;
        padding: var(--spacing-md);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .footer-contact p {
        justify-content: center;
    }
    
    section {
        padding: var(--spacing-3xl) 0;
    }
    
    .section-title {
        font-size: var(--font-size-3xl);
    }
}

@media (max-width: 768px) {
    .products-grid {
        grid-template-columns: 1fr;
        grid-auto-rows: auto;
    }
    
    .product-card.large {
        grid-column: span 1;
    }
    
    .product-image {
        height: 200px;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
    
    .stats-panel {
        grid-template-columns: 1fr;
    }
}