/* ===================================
   CSS Reset & Base Styles
   =================================== */

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

:root {
    /* Colors */
    --color-primary: #0066cc;
    --color-primary-dark: #0052a3;
    --color-secondary: #00c896;
    --color-text: #1a1a1a;
    --color-text-light: #4a4a4a;
    --color-background: #ffffff;
    --color-background-alt: #f5f7fa;
    --color-border: #e0e0e0;
    --color-ai-accent: #6b46c1;

    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Layout */
    --container-max-width: 1200px;
    --border-radius: 8px;
    --box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --box-shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.15);
}

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

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

/* ===================================
   Typography
   =================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-light);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* ===================================
   Utility Classes
   =================================== */

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

.section-intro {
    font-size: 1.125rem;
    color: var(--color-text-light);
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    text-decoration: none;
}

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

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

/* ===================================
   Navigation
   =================================== */

#navigation {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--color-background);
    box-shadow: var(--box-shadow);
    padding: var(--spacing-sm) 0;
}

.nav-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand a {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-menu li a {
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: all 0.3s ease;
}

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

.nav-cta {
    background-color: var(--color-primary);
    color: var(--color-background) !important;
    border-radius: var(--border-radius);
}

.nav-cta:hover {
    background-color: var(--color-primary-dark);
}

/* ===================================
   Hero Section
   =================================== */

#hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--color-background);
    padding: var(--spacing-xl) 0;
    min-height: 80vh;
    display: flex;
    align-items: center;
}

.hero-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.hero-content h1 {
    color: var(--color-background);
    margin-bottom: var(--spacing-md);
}

.hero-subheadline {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-lg);
}

/* ===================================
   Services Section
   =================================== */

#services {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-background);
}

#services h2 {
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

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

.service-card {
    background-color: var(--color-background-alt);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

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

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

.service-card h3 {
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.service-card p {
    font-size: 0.95rem;
}

/* ===================================
   AI Section
   =================================== */

#ai {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--color-ai-accent) 0%, #553c9a 100%);
    color: var(--color-background);
}

#ai h2,
#ai h3,
#ai h4 {
    color: var(--color-background);
}

#ai p,
#ai li {
    color: rgba(255, 255, 255, 0.9);
}

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

.use-case-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.use-case {
    background-color: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
}

.use-case h4 {
    margin-bottom: var(--spacing-xs);
}

.benefits-list {
    list-style: none;
    margin-top: var(--spacing-md);
}

.benefits-list li {
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
}

.benefits-list strong {
    color: var(--color-background);
    display: block;
    margin-bottom: 0.25rem;
}

/* ===================================
   Why Us Section
   =================================== */

#why-us {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-background-alt);
}

#why-us h2 {
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

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

.differentiator {
    background-color: var(--color-background);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--box-shadow);
    transition: all 0.3s ease;
}

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

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

.differentiator h3 {
    margin-bottom: var(--spacing-sm);
}

/* ===================================
   Process Section
   =================================== */

#process {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-background);
}

#process h2 {
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

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

.process-step {
    text-align: center;
    padding: var(--spacing-md);
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--color-background);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto var(--spacing-md);
}

.process-step h3 {
    margin-bottom: var(--spacing-sm);
}

/* ===================================
   Certifications Section
   =================================== */

#certifications {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-background-alt);
}

#certifications h2 {
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    align-items: center;
}

.certification-item {
    text-align: center;
    padding: var(--spacing-md);
    background-color: var(--color-background);
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
}

.certification-item:hover {
    transform: scale(1.05);
    box-shadow: var(--box-shadow);
}

.certification-item img {
    width: 100%;
    max-width: 120px;
    height: auto;
    margin-bottom: var(--spacing-sm);
}

.certification-item p {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
}

/* ===================================
   Footer
   =================================== */

#footer {
    background-color: var(--color-text);
    color: var(--color-background);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

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

.footer-cta {
    text-align: center;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--border-radius);
}

.footer-cta h2 {
    color: var(--color-background);
}

.footer-cta p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-md);
}

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

.footer-column h3 {
    color: var(--color-background);
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
}

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

.footer-column ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-column a {
    color: rgba(255, 255, 255, 0.8);
    transition: color 0.3s ease;
}

.footer-column a:hover {
    color: var(--color-background);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: var(--spacing-md);
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
}

/* Products Section */
#products {
    background-color: var(--bg-light);
    padding: 6rem 0;
}

.product-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    background: white;
    border-radius: 20px;
    padding: 3rem;
    box-shadow: var(--shadow-md);
    align-items: center;
}

.product-tagline {
    color: var(--primary);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.product-features {
    list-style: none;
    padding: 0;
    margin: 2rem 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.product-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-light);
}

.product-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.product-preview-img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

/* Team Section */
#team {
    padding: 6rem 0;
    background-color: white;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
    justify-content: center;
}

.team-member {
    text-align: center;
    padding: 2rem;
    border-radius: 16px;
    background: var(--bg-light);
    transition: transform 0.3s ease;
}

.team-member:hover {
    transform: translateY(-5px);
}

.member-avatar {
    width: 100px;
    height: 100px;
    background: white;
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    box-shadow: var(--shadow-sm);
}

.member-role {
    color: var(--primary);
    font-weight: 500;
    margin-bottom: 1rem;
}

.member-bio {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* ===================================
   Responsive Design - Mobile First
   =================================== */

/* Tablet (768px and up) */
@media (max-width: 768px) {
    .nav-menu {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
        justify-content: center;
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-image {
        order: -1;
    }

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

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

    .process-steps {
        grid-template-columns: 1fr;
    }
}

/* Mobile (480px and below) */
@media (max-width: 480px) {
    :root {
        --spacing-xl: 3rem;
        --spacing-lg: 2rem;
    }

    .nav-container {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .nav-menu {
        flex-direction: column;
        width: 100%;
    }

    .nav-menu li {
        width: 100%;
        text-align: center;
    }

    #hero {
        min-height: auto;
        padding: var(--spacing-lg) 0;
    }

    .btn {
        width: 100%;
        padding: 0.875rem 1.5rem;
    }

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

/* Print styles */
@media print {

    #navigation,
    #footer {
        display: none;
    }
}