/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --brand-primary: #6C47FF;
    --brand-dark: #5A3FD6;
    --brand-light: #8B6EFF;

    /* Neutral Colors */
    --white: #FFFFFF;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    --black: #000000;

    /* Semantic Colors */
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    --info: #3B82F6;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;

    /* Spacing */
    --spacing-1: 4px;
    --spacing-2: 8px;
    --spacing-3: 12px;
    --spacing-4: 16px;
    --spacing-6: 24px;
    --spacing-8: 32px;
    --spacing-12: 48px;
    --spacing-16: 64px;
    --spacing-20: 80px;
    --spacing-24: 96px;
    --spacing-32: 128px;
    --spacing-40: 160px;
    --spacing-48: 192px;
    --spacing-56: 224px;
    --spacing-64: 256px;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-pill: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Transitions */
    --transition-default: all 0.2s ease;
    --transition-slow: all 0.3s ease;
    --transition-fast: all 0.1s ease;

    /* Container */
    --container-max-width: 1200px;
    --grid-gap: 24px;
}

/* Base Typography */
body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography Hierarchy */
h1 {
    font-size: 48px;
    line-height: 1.1;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--gray-900);
}

h2 {
    font-size: 36px;
    line-height: 1.2;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--gray-900);
}

h3 {
    font-size: 24px;
    line-height: 1.3;
    font-weight: 600;
    letter-spacing: -0.005em;
    color: var(--gray-900);
}

h4 {
    font-size: 20px;
    line-height: 1.4;
    font-weight: 600;
    color: var(--gray-900);
}

.body-large {
    font-size: 18px;
    line-height: 1.6;
    font-weight: 400;
}

.body-small {
    font-size: 14px;
    line-height: 1.5;
    font-weight: 400;
}

.caption {
    font-size: 12px;
    line-height: 1.4;
    font-weight: 400;
}

/* Container */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-6);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3) var(--spacing-6);
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--transition-default);
    white-space: nowrap;
    user-select: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--brand-primary), var(--brand-dark));
    color: var(--white);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--brand-dark), var(--brand-primary));
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: transparent;
    color: var(--brand-primary);
    border: 1px solid var(--brand-primary);
}

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

.btn-ghost {
    background: transparent;
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
}

.btn-ghost:hover {
    background: var(--gray-50);
    color: var(--gray-800);
}

.btn-large {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: 18px;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--brand-primary);
    text-decoration: none;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-8);
}

.nav-link {
    color: var(--gray-700);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-default);
}

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-2);
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    margin: 3px 0;
    transition: var(--transition-default);
}

/* Hero Section */
.hero {
    padding: var(--spacing-32) 0 var(--spacing-20);
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
    margin-top: 72px;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    margin-bottom: var(--spacing-6);
    background: linear-gradient(135deg, var(--gray-900), var(--gray-600));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    line-height: 1.6;
    color: var(--gray-600);
    margin-bottom: var(--spacing-8);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-4);
    justify-content: center;
    flex-wrap: wrap;
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-16);
}

.section-title {
    margin-bottom: var(--spacing-4);
}

.section-subtitle {
    font-size: 18px;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* Services Section */
.services {
    padding: var(--spacing-20) 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-8);
}

.service-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-xl);
    padding: var(--spacing-8);
    transition: var(--transition-default);
    box-shadow: var(--shadow-sm);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--gray-300);
}

.service-icon {
    margin-bottom: var(--spacing-6);
}

.service-title {
    margin-bottom: var(--spacing-4);
    color: var(--gray-900);
}

.service-description {
    color: var(--gray-600);
    margin-bottom: var(--spacing-6);
    line-height: 1.6;
}

/* Why Us Section */
.why-us {
    padding: var(--spacing-20) 0;
    background: var(--gray-50);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-12);
}

.advantage-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-8);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-default);
}

.advantage-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.advantage-icon {
    margin-bottom: var(--spacing-6);
}

.advantage-title {
    margin-bottom: var(--spacing-4);
    color: var(--gray-900);
}

.advantage-description {
    color: var(--gray-600);
    line-height: 1.6;
}

.cta-section {
    text-align: center;
    margin-top: var(--spacing-12);
}

/* Contact Section */
.contact {
    padding: var(--spacing-20) 0;
}

.contact-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact-info {
    margin: var(--spacing-12) 0;
}

.contact-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
}

.contact-icon {
    flex-shrink: 0;
}

.contact-details h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--spacing-1);
}

.contact-link {
    color: var(--brand-primary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-default);
}

.contact-link:hover {
    color: var(--brand-dark);
}

.contact-cta {
    margin-top: var(--spacing-8);
}

/* Footer */
.footer {
    background: var(--gray-800);
    color: var(--gray-300);
    padding: var(--spacing-16) 0 var(--spacing-8);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--spacing-12);
    margin-bottom: var(--spacing-8);
}

.footer-logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--brand-primary);
    text-decoration: none;
    margin-bottom: var(--spacing-4);
    display: block;
}

.footer-description {
    color: var(--gray-400);
    max-width: 400px;
}

.footer-section h4 {
    color: var(--white);
    margin-bottom: var(--spacing-4);
    font-size: 16px;
}

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

.footer-section li {
    margin-bottom: var(--spacing-2);
}

.footer-section a {
    color: var(--gray-400);
    text-decoration: none;
    transition: var(--transition-default);
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-8);
    border-top: 1px solid var(--gray-700);
    color: var(--gray-400);
}

/* Responsive Design */
@media (max-width: 768px) {

    /* Typography adjustments */
    h1 {
        font-size: 32px;
    }

    h2 {
        font-size: 28px;
    }

    h3 {
        font-size: 20px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    /* Navigation */
    .nav-links {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    /* Hero */
    .hero {
        padding: var(--spacing-20) 0 var(--spacing-16);
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .hero-cta .btn {
        width: 100%;
        max-width: 280px;
    }

    /* Sections */
    .services,
    .why-us,
    .contact {
        padding: var(--spacing-16) 0;
    }

    .section-header {
        margin-bottom: var(--spacing-12);
    }

    /* Grids */
    .services-grid,
    .advantages-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-6);
    }

    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-8);
    }

    .footer {
        padding: var(--spacing-12) 0 var(--spacing-6);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-4);
    }

    .service-card,
    .advantage-card {
        padding: var(--spacing-6);
    }

    .hero-title {
        font-size: 28px;
    }

    .section-title {
        font-size: 24px;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Focus states for accessibility */
.btn:focus,
.nav-link:focus,
.contact-link:focus {
    outline: 2px solid var(--brand-primary);
    outline-offset: 2px;
}

/* Animation utilities */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Additional hover effects */
.service-card:hover .service-icon svg,
.advantage-card:hover .advantage-icon svg {
    transform: scale(1.1);
    transition: var(--transition-default);
}

/* Gradient text utility */
.gradient-text {
    background: linear-gradient(135deg, var(--brand-primary), var(--brand-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}