/* ============================================
   INFRA TECH SOLUTIONS - ESTILOS COMPLETOS
   ============================================ */

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

:root {
    /* Cores Primárias */
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    
    /* Cores Secundárias */
    --secondary: #0f172a;
    --secondary-light: #1e293b;
    
    /* Cores de Destaque */
    --accent: #06b6d4;
    --accent-light: #22d3ee;
    
    /* Cores Neutras */
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Gradientes */
    --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    --gradient-dark: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-light) 100%);
    
    /* Tipografia */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Espaçamento */
    --container-width: 1200px;
    --section-padding: 6rem;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Bordas */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--gray-700);
    background-color: var(--white);
}

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

/* ============================================
   NAVEGAÇÃO
   ============================================ */
.navbar {
    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;
    padding: 1rem 0;
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary);
    text-decoration: none;
}

.nav-brand i {
    color: var(--primary);
    font-size: 1.75rem;
}

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

.nav-link {
    color: var(--gray-600);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--gray-700);
    cursor: pointer;
}

/* ============================================
   BOTÕES
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
}

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

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

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

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

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

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    padding: 10rem 0 6rem;
    background: var(--gray-50);
    position: relative;
    overflow: hidden;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    color: var(--secondary);
    margin-bottom: 1.5rem;
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
    max-width: 90%;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 3rem;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--gray-500);
    font-weight: 500;
}

/* Server Rack Animation */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.server-rack {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 2rem;
    background: var(--secondary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.server-unit {
    width: 200px;
    height: 30px;
    background: var(--gray-700);
    border-radius: var(--radius-sm);
    position: relative;
    overflow: hidden;
}

.server-unit.active::before {
    content: '';
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-bg-pattern {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(37, 99, 235, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

/* ============================================
   CLIENTS SECTION
   ============================================ */
.clients {
    padding: 3rem 0;
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
}

.clients-title {
    text-align: center;
    font-size: 0.9rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 2rem;
}

.clients-grid {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 4rem;
    flex-wrap: wrap;
}

.client-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-400);
    transition: color 0.3s ease;
}

.client-logo:hover {
    color: var(--gray-600);
}

.client-logo i {
    font-size: 2rem;
}

/* ============================================
   SECTIONS BASE
   ============================================ */
.section {
    padding: var(--section-padding) 0;
}

.section-dark {
    background: var(--secondary);
    color: var(--white);
}

.section-gradient {
    background: var(--gradient-primary);
    color: var(--white);
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 4rem;
}

.section-header.light {
    color: var(--white);
}

.section-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
}

.section-gradient .section-tag {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--secondary);
}

.section-dark .section-title,
.section-gradient .section-title {
    color: var(--white);
}

.section-description {
    font-size: 1.125rem;
    color: var(--gray-500);
}

.section-dark .section-description,
.section-gradient .section-description {
    color: rgba(255, 255, 255, 0.8);
}

/* ============================================
   PRODUCTS GRID
   ============================================ */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.product-card {
    background: var(--secondary-light);
    border: 1px solid var(--gray-700);
    border-radius: var(--radius-xl);
    padding: 2rem;
    position: relative;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.product-card.featured {
    border-color: var(--primary);
    box-shadow: 0 0 0 1px var(--primary);
}

.product-badge {
    position: absolute;
    top: -12px;
    right: 2rem;
    background: var(--gradient-primary);
    color: var(--white);
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    border-radius: var(--radius-md);
}

.product-icon {
    width: 60px;
    height: 60px;
    background: rgba(37, 99, 235, 0.1);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.product-icon i {
    font-size: 1.75rem;
    color: var(--primary);
}

.product-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--white);
}

.product-description {
    color: var(--gray-400);
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.product-features {
    list-style: none;
    margin-bottom: 2rem;
}

.product-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    color: var(--gray-300);
    font-size: 0.95rem;
}

.product-features i {
    color: var(--accent);
    font-size: 0.875rem;
}

.product-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1.5rem;
    border-top: 1px solid var(--gray-700);
}

.product-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent);
}

/* ============================================
   SOFTWARE SHOWCASE
   ============================================ */
.software-showcase {
    margin-bottom: 4rem;
}

.software-subtitle {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 2rem;
    text-align: center;
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.expertise-item {
    padding: 2rem;
    background: var(--gray-50);
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
    transition: all 0.3s ease;
}

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

.expertise-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.expertise-icon i {
    font-size: 1.25rem;
    color: var(--white);
}

.expertise-item h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 0.5rem;
}

.expertise-item p {
    color: var(--gray-600);
    font-size: 0.95rem;
}

/* Methodology */
.methodology {
    background: var(--gray-50);
    padding: 3rem;
    border-radius: var(--radius-xl);
}

.methodology-title {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 2rem;
}

.methodology-steps {
    display: flex;
    justify-content: space-between;
    gap: 2rem;
    flex-wrap: wrap;
}

.step {
    flex: 1;
    min-width: 150px;
    text-align: center;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--white);
    font-size: 1.25rem;
    font-weight: 800;
    border-radius: 50%;
    margin-bottom: 1rem;
}

.step h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 0.5rem;
}

.step p {
    color: var(--gray-600);
    font-size: 0.875rem;
}

/* Tech Stack */
.tech-stack {
    text-align: center;
}

.tech-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 2rem;
}

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

.tech-category h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.tech-items {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

.tech-item {
    padding: 0.5rem 1rem;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
    transition: all 0.3s ease;
}

.tech-item:hover {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

/* ============================================
   SERVICES
   ============================================ */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.service-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.service-card:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-5px);
}

.service-card i {
    font-size: 3rem;
    color: var(--white);
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--white);
}

.service-card p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
    background: var(--gray-900);
    padding: 5rem 0;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.25rem;
    color: var(--gray-400);
    margin-bottom: 2rem;
}

/* ============================================
   CONTACT
   ============================================ */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
}

.contact-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 2rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact-item i {
    font-size: 1.25rem;
    color: var(--primary);
    margin-top: 0.25rem;
}

.contact-item h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 0.25rem;
}

.contact-item p {
    color: var(--gray-600);
    font-size: 0.95rem;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: var(--gray-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-600);
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-3px);
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--gray-50);
    padding: 2.5rem;
    border-radius: var(--radius-xl);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

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

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--secondary);
    color: var(--white);
    padding: 4rem 0 2rem;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

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

.footer-brand p {
    color: var(--gray-400);
    font-size: 0.95rem;
    line-height: 1.7;
}

.footer-links h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--white);
}

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

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--gray-400);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-700);
}

.footer-bottom p {
    color: var(--gray-500);
    font-size: 0.875rem;
}

.footer-legal {
    display: flex;
    gap: 2rem;
}

.footer-legal a {
    color: var(--gray-500);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.3s ease;
}

.footer-legal a:hover {
    color: var(--white);
}

/* ============================================
   BACK TO TOP
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

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

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
}

/* ============================================
   RESPONSIVIDADE
   ============================================ */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        max-width: 100%;
    }

    .hero-visual {
        order: -1;
    }

    .server-rack {
        transform: scale(0.8);
    }

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

@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        border-bottom: 1px solid var(--gray-200);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .hero {
        padding: 8rem 0 4rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }

    .section {
        padding: 4rem 0;
    }

    .section-title {
        font-size: 2rem;
    }

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

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

    .methodology-steps {
        flex-direction: column;
    }

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

    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn-large {
        width: 100%;
        justify-content: center;
    }

    .clients-grid {
        gap: 2rem;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}