/* Reset e Variáveis */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-black: #000000;
    --color-white: #ffffff;
    --color-gray-50: #fafafa;
    --color-gray-100: #f5f5f5;
    --color-gray-200: #e5e5e5;
    --color-gray-300: #d4d4d4;
    --color-gray-400: #a3a3a3;
    --color-gray-500: #737373;
    --color-gray-600: #525252;
    --color-gray-700: #404040;
    --color-gray-800: #262626;
    --color-gray-900: #171717;
    --color-accent: #0071e3;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --spacing-2xl: 8rem;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--color-gray-900);
    background-color: var(--color-white);
    font-size: 17px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    z-index: 1000;
    transition: var(--transition);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.navbar {
    padding: 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 44px;
}

.brand-logo {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-black);
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--color-gray-700);
    font-size: 14px;
    font-weight: 400;
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-black);
    transition: width 0.3s ease;
}

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.nav-toggle span {
    width: 22px;
    height: 1px;
    background-color: var(--color-black);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 0 80px;
    overflow: hidden;
    background: linear-gradient(180deg, #fafafa 0%, #ffffff 100%);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(0, 113, 227, 0.03) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(48px, 8vw, 80px);
    font-weight: 600;
    line-height: 1.05;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-md);
    color: var(--color-black);
}

.title-line {
    display: block;
}

.title-accent {
    background: linear-gradient(135deg, var(--color-black) 0%, var(--color-gray-600) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(19px, 2.5vw, 24px);
    color: var(--color-gray-600);
    font-weight: 400;
    line-height: 1.5;
    margin-bottom: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(180deg, var(--color-gray-400) 0%, transparent 100%);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 28px;
    text-decoration: none;
    border-radius: 980px;
    font-weight: 400;
    font-size: 17px;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    text-align: center;
}

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

.btn-primary:hover {
    background-color: var(--color-gray-800);
    transform: scale(1.05);
}

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

.btn-secondary:hover {
    background-color: var(--color-gray-50);
    border-color: var(--color-gray-400);
}

.btn-large {
    padding: 14px 32px;
    font-size: 17px;
}

/* Sections */
.section {
    padding: var(--spacing-2xl) 0;
    position: relative;
}

.section-large {
    padding: var(--spacing-2xl) 0;
}

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

.section-intro {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section-label {
    display: inline-block;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-sm);
}

.section-dark .section-label {
    color: var(--color-gray-400);
}

.section-title {
    font-size: clamp(40px, 6vw, 56px);
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-md);
    color: var(--color-black);
}

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

.section-description {
    font-size: 21px;
    color: var(--color-gray-600);
    line-height: 1.5;
    font-weight: 400;
}

.section-dark .section-description {
    color: var(--color-gray-400);
}

/* Explanation Section */
.section-explanation {
    background-color: var(--color-gray-50);
    padding: var(--spacing-2xl) 0;
}

.explanation-content {
    max-width: 1000px;
    margin: 0 auto;
}

.explanation-text {
    text-align: center;
}

.explanation-text .section-label {
    margin-bottom: var(--spacing-sm);
}

.explanation-text .section-title {
    margin-bottom: var(--spacing-xl);
}

.explanation-steps {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    text-align: left;
}

.step {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background-color: var(--color-white);
    border-radius: 16px;
    transition: var(--transition);
}

.step:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.step-number {
    width: 48px;
    height: 48px;
    background-color: var(--color-black);
    color: var(--color-white);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 600;
    flex-shrink: 0;
}

.step-content h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-black);
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.01em;
}

.step-content p {
    font-size: 17px;
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
    max-width: 100%;
}

.about-text {
    margin-bottom: 0;
}

.text-large {
    font-size: 22px;
    line-height: 1.5;
    color: var(--color-gray-900);
    font-weight: 400;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.01em;
}

.about-text p {
    font-size: 17px;
    color: var(--color-gray-600);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

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

.stat-item {
    text-align: center;
    padding: var(--spacing-lg);
    background-color: var(--color-gray-50);
    border-radius: 16px;
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-4px);
    background-color: var(--color-gray-100);
}

.stat-number {
    font-size: 48px;
    font-weight: 600;
    color: var(--color-black);
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.02em;
}

.stat-label {
    color: var(--color-gray-600);
    font-size: 14px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Services Section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.service-card {
    padding: var(--spacing-lg);
    background-color: var(--color-gray-900);
    border-radius: 20px;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.service-card:hover {
    transform: translateY(-8px);
    background-color: var(--color-gray-800);
    border-color: rgba(255, 255, 255, 0.2);
}

.service-number {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-gray-400);
    margin-bottom: var(--spacing-md);
    letter-spacing: 0.1em;
}

.service-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.01em;
}

.service-description {
    font-size: 17px;
    color: var(--color-gray-400);
    line-height: 1.6;
}

/* Technology Section */
.tech-showcase {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.tech-item {
    text-align: center;
    padding: var(--spacing-lg);
}

.tech-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    color: var(--color-black);
    display: flex;
    align-items: center;
    justify-content: center;
}

.tech-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--color-black);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.01em;
}

.tech-description {
    font-size: 17px;
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* Contact Section */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.contact-details {
    margin-top: var(--spacing-lg);
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    border-radius: 12px;
    transition: var(--transition);
}

.contact-item:hover {
    background-color: var(--color-gray-900);
}

.contact-icon {
    width: 24px;
    height: 24px;
    color: var(--color-gray-400);
    flex-shrink: 0;
    margin-top: 2px;
}

.contact-item h4 {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-gray-400);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact-item p {
    font-size: 17px;
    color: var(--color-white);
    font-weight: 400;
}

.contact-form {
    background-color: var(--color-gray-900);
    padding: var(--spacing-xl);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    background-color: var(--color-gray-800);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    font-size: 17px;
    font-family: inherit;
    color: var(--color-white);
    transition: var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-gray-500);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: rgba(255, 255, 255, 0.3);
    background-color: var(--color-gray-800);
}

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

/* Footer */
.footer {
    background-color: var(--color-black);
    color: var(--color-white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

.footer-brand .brand-logo {
    color: var(--color-white);
    display: block;
    margin-bottom: var(--spacing-sm);
}

.footer-brand p {
    color: var(--color-gray-400);
    font-size: 17px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.footer-column h4 {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-gray-400);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

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

.footer-column a {
    color: var(--color-gray-400);
    text-decoration: none;
    font-size: 17px;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--color-gray-500);
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        padding: 0 30px;
    }

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

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

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

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

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

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 44px;
        flex-direction: column;
        background-color: rgba(255, 255, 255, 0.98);
        backdrop-filter: saturate(180%) blur(20px);
        width: 100%;
        padding: var(--spacing-lg) 0;
        transition: var(--transition);
        border-bottom: 1px solid var(--color-gray-200);
        gap: 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        width: 100%;
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .nav-toggle {
        display: flex;
    }

    .hero {
        min-height: 90vh;
        padding: 100px 0 60px;
    }

    .section {
        padding: var(--spacing-xl) 0;
    }

    .section-large {
        padding: var(--spacing-xl) 0;
    }

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

    .tech-showcase {
        grid-template-columns: 1fr;
    }

    .about-stats {
        grid-template-columns: 1fr;
    }

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

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

    .container {
        padding: 0 20px;
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .contact-form {
        padding: var(--spacing-md);
    }
}

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

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