/* ===== RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #1E40AF;
    background-color: #FFFFFF;
    overflow-x: hidden;
}

/* ===== VARIABLES ===== */
:root {
    /* Colors */
    --color-white: #FFFFFF;
    --color-green: #10B981;
    --color-green-dark: #059669;
    --color-green-light: #D1FAE5;
    --color-blue: #3B82F6;
    --color-blue-dark: #1E40AF;
    --color-blue-light: #DBEAFE;
    --color-gray: #6B7280;
    --color-gray-light: #F9FAFB;
    --color-gray-dark: #374151;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--color-green) 0%, var(--color-blue) 100%);
    --gradient-secondary: linear-gradient(135deg, var(--color-blue) 0%, var(--color-green) 100%);
    --gradient-light: linear-gradient(135deg, var(--color-green-light) 0%, var(--color-blue-light) 100%);
    
    /* Spacing */
    --container-max-width: 1200px;
    --section-padding: 5rem 0;
    --section-padding-mobile: 3rem 0;
    
    /* Typography */
    --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;
    
    /* 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 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);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ===== UTILITY CLASSES ===== */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

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

.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--color-blue);
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 1000;
}

.skip-link:focus {
    top: 6px;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    border-radius: 0.5rem;
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    white-space: nowrap;
}

.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-secondary {
    background: transparent;
    color: var(--color-blue);
    border: 2px solid var(--color-blue);
}

.btn-secondary:hover {
    background: var(--color-blue);
    color: white;
    transform: translateY(-2px);
}

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

.btn .icon {
    width: 1.25rem;
    height: 1.25rem;
}

/* ===== 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 rgba(59, 130, 246, 0.1);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
}

.nav-brand .logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--color-blue-dark);
}

.logo-icon {
    width: 2.5rem;
    height: 2.5rem;
    color: var(--color-green);
}

.logo-text {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    letter-spacing: -0.025em;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

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

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-normal);
}

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

.nav-cta {
    margin-left: 1rem;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger {
    width: 1.5rem;
    height: 2px;
    background: var(--color-blue);
    transition: all var(--transition-normal);
}

/* ===== HERO SECTION ===== */
.hero {
    padding: 8rem 0 6rem;
    background: linear-gradient(135deg, #F0FDF4 0%, #EFF6FF 100%);
    position: relative;
    overflow: hidden;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-text {
    z-index: 2;
}

.hero-title {
    font-size: var(--font-size-6xl);
    font-weight: 800;
    line-height: 1.1;
    color: var(--color-blue-dark);
    margin-bottom: 1.5rem;
    letter-spacing: -0.025em;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-gray);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--color-gray);
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.data-animation-container {
    width: 100%;
    max-width: 500px;
    height: 400px;
    position: relative;
}

.data-animation {
    width: 100%;
    height: 100%;
    border-radius: 1rem;
}

/* ===== SECTION HEADERS ===== */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--color-blue-dark);
    margin-bottom: 1rem;
    letter-spacing: -0.025em;
}

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

.section-description {
    font-size: var(--font-size-lg);
    color: var(--color-gray);
    line-height: 1.7;
    margin-bottom: 2rem;
}

/* ===== TECHNOLOGIES SECTION ===== */
.technologies {
    padding: var(--section-padding);
    background: white;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    border-radius: 1rem;
    background: var(--color-gray-light);
    transition: all var(--transition-normal);
    cursor: pointer;
}

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

.tech-logo {
    width: 3rem;
    height: 3rem;
    object-fit: contain;
}

.tech-name {
    font-weight: 600;
    color: var(--color-blue-dark);
    text-align: center;
}

/* ===== SERVICES SECTION ===== */
.services {
    padding: var(--section-padding);
    background: var(--color-gray-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.service-card {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

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

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

.service-green::before {
    background: linear-gradient(135deg, var(--color-green) 0%, var(--color-green-dark) 100%);
}

.service-blue::before {
    background: linear-gradient(135deg, var(--color-blue) 0%, var(--color-blue-dark) 100%);
}

.service-gradient::before {
    background: var(--gradient-primary);
}

.service-blue-green::before {
    background: var(--gradient-secondary);
}

.service-icon {
    width: 3rem;
    height: 3rem;
    background: var(--gradient-light);
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.service-icon svg {
    width: 1.5rem;
    height: 1.5rem;
    color: var(--color-blue);
}

.service-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-blue-dark);
    margin-bottom: 1rem;
}

.service-description {
    color: var(--color-gray);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.service-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-tag {
    background: var(--color-blue-light);
    color: var(--color-blue);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* ===== WHY CHOOSE SECTION ===== */
.why-choose {
    padding: var(--section-padding);
    background: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
}

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

.stat-number {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-blue-dark);
    margin-bottom: 0.5rem;
}

.stat-description {
    color: var(--color-gray);
}

/* ===== NEXT LEVEL SECTION ===== */
.next-level {
    padding: var(--section-padding);
    background: var(--color-gray-light);
}

.next-level-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.next-level-services {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.detail-service {
    display: flex;
    gap: 1rem;
    align-items: start;
}

.detail-icon {
    width: 3rem;
    height: 3rem;
    background: var(--gradient-primary);
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.detail-icon svg {
    width: 1.5rem;
    height: 1.5rem;
    color: white;
}

.detail-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-blue-dark);
    margin-bottom: 0.5rem;
}

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

/* ===== USE CASES SECTION ===== */
.use-cases {
    padding: var(--section-padding);
    background: white;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.use-case-card {
    background: white;
    border: 1px solid var(--color-blue-light);
    border-radius: 1rem;
    padding: 2rem;
    transition: all var(--transition-normal);
}

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

.use-case-icon {
    width: 3rem;
    height: 3rem;
    background: var(--gradient-light);
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.use-case-icon svg {
    width: 1.5rem;
    height: 1.5rem;
    color: var(--color-blue);
}

.use-case-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-blue-dark);
    margin-bottom: 1rem;
}

.use-case-description {
    color: var(--color-gray);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.use-case-benefits {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.benefit {
    background: var(--color-green-light);
    color: var(--color-green-dark);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* ===== CTA FINAL SECTION ===== */
.cta-final {
    padding: var(--section-padding);
    background: linear-gradient(135deg, var(--color-blue-dark) 0%, var(--color-green-dark) 100%);
    color: white;
}

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

.cta-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: white;
}

.cta-description {
    font-size: var(--font-size-lg);
    margin-bottom: 3rem;
    opacity: 0.9;
    line-height: 1.7;
}

.cta-process {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.process-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1rem;
}

.step-number {
    width: 3rem;
    height: 3rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    font-weight: 700;
    backdrop-filter: blur(10px);
}

.step-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.step-description {
    opacity: 0.8;
}

.cta-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.cta-actions .btn-primary {
    background: white;
    color: var(--color-blue-dark);
}

.cta-actions .btn-primary:hover {
    background: var(--color-gray-light);
}

.contact-info {
    text-align: center;
}

.contact-email,
.contact-website {
    opacity: 0.8;
    margin: 0.25rem 0;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--color-blue-dark);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-brand .logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    color: white;
    text-decoration: none;
}

.footer-description {
    opacity: 0.8;
    line-height: 1.6;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.footer-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-green);
}

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

.footer-list li {
    margin-bottom: 0.5rem;
}

.footer-list a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color var(--transition-normal);
}

.footer-list a:hover {
    color: var(--color-green);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1rem;
    text-align: center;
}

.footer-copyright {
    opacity: 0.6;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
    .hero-content,
    .next-level-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .services-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: var(--section-padding-mobile);
    }
    
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 2rem;
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-list {
        flex-direction: column;
        gap: 1rem;
        width: 100%;
    }
    
    .nav-cta {
        margin-left: 0;
        margin-top: 1rem;
        width: 100%;
        justify-content: center;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero {
        padding: 6rem 0 4rem;
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .hero-actions .btn {
        justify-content: center;
    }
    
    .data-animation-container {
        height: 300px;
    }
    
    .services-grid,
    .use-cases-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
    
    .cta-process {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .section-title {
        font-size: var(--font-size-3xl);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .tech-item {
        padding: 1rem;
    }
    
    .service-card,
    .use-case-card {
        padding: 1.5rem;
    }
}

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

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

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

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

.animate-fade-in-left {
    animation: fadeInLeft 0.6s ease-out;
}

.animate-fade-in-right {
    animation: fadeInRight 0.6s ease-out;
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* Focus styles for keyboard navigation */
.btn:focus,
.nav-link:focus,
.tech-item:focus {
    outline: 2px solid var(--color-blue);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --color-gray: #000000;
        --color-gray-light: #FFFFFF;
    }
}