/* ================================================
   NEXA LABS - Premium Quiet Luxury Design
   ================================================ */

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

:root {
    /* Cores - Quiet Luxury Palette */
    --preto-absoluto: #000000;
    --verde-esmeralda: #10b981;
    --verde-esmeralda-hover: #059669;
    --verde-esmeralda-dark: #047857;
    --cinza-escuro: #0a0a0a;
    --cinza-medio: #1a1a1a;
    --cinza-claro: #2a2a2a;
    --branco: #ffffff;
    --branco-suave: #f9f9f9;
    --texto-secundario: #a0a0a0;
    
    /* Tipografia */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Espaçamento */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Transições */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s ease;
    --transition-slow: 0.6s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--preto-absoluto);
    color: var(--branco);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

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

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1.5rem 0;
    background-color: transparent;
    transition: all var(--transition-medium);
}

.navbar.scrolled {
    background-color: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    box-shadow: 0 2px 20px rgba(16, 185, 129, 0.1);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--branco);
    letter-spacing: 0.5px;
}

.logo i {
    color: var(--verde-esmeralda);
    font-size: 1.75rem;
}

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

.nav-link {
    color: var(--branco);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    letter-spacing: 0.3px;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--verde-esmeralda);
    transition: width var(--transition-medium);
}

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

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

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 2px;
    background-color: var(--branco);
    transition: all var(--transition-fast);
}

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

.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg) 0;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, rgba(16, 185, 129, 0.1) 0%, var(--preto-absoluto) 70%);
    opacity: 0.6;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 20%;
    right: 10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(80px);
    animation: float 8s ease-in-out infinite;
}

.hero-background::after {
    content: '';
    position: absolute;
    bottom: 20%;
    left: 10%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(60px);
    animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) scale(1);
    }
    50% {
        transform: translateY(-30px) scale(1.1);
    }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-headline {
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

.highlight {
    color: var(--verde-esmeralda);
    position: relative;
    display: inline-block;
}

.hero-subheadline {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--texto-secundario);
    margin-bottom: 3rem;
    line-height: 1.8;
    font-weight: 300;
}

.hero-cta {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2.5rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    transition: all var(--transition-medium);
    cursor: pointer;
    border: 2px solid transparent;
    letter-spacing: 0.3px;
}

.btn-primary {
    background-color: var(--verde-esmeralda);
    color: var(--preto-absoluto);
}

.btn-primary:hover {
    background-color: var(--verde-esmeralda-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(16, 185, 129, 0.3);
}

.btn-secondary {
    background-color: transparent;
    color: var(--branco);
    border: 2px solid var(--cinza-claro);
}

.btn-secondary:hover {
    border-color: var(--verde-esmeralda);
    color: var(--verde-esmeralda);
    transform: translateY(-2px);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    color: var(--texto-secundario);
    font-size: 0.85rem;
    letter-spacing: 1px;
}

.scroll-line {
    width: 2px;
    height: 40px;
    background: linear-gradient(to bottom, var(--verde-esmeralda), transparent);
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
    0%, 100% {
        opacity: 0;
        transform: translateY(-10px);
    }
    50% {
        opacity: 1;
        transform: translateY(10px);
    }
}

/* Fade In Animation */
.fade-in {
    opacity: 0;
    animation: fadeIn 1s ease forwards;
}

.fade-in:nth-child(2) {
    animation-delay: 0.2s;
}

.fade-in:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

/* ================================================
   Section Styles
   ================================================ */

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

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-subtitle {
    display: block;
    font-size: 0.9rem;
    color: var(--verde-esmeralda);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 600;
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 1rem;
}

/* ================================================
   About Section
   ================================================ */

.about-section {
    background-color: var(--cinza-escuro);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

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

.about-description {
    font-size: 1.125rem;
    color: var(--texto-secundario);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.about-description strong {
    color: var(--branco);
    font-weight: 600;
}

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

.stat-item {
    display: flex;
    gap: 1.5rem;
    padding: 2rem;
    background-color: var(--cinza-medio);
    border-radius: 12px;
    border: 1px solid transparent;
    transition: all var(--transition-medium);
}

.stat-item:hover {
    border-color: var(--verde-esmeralda);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(16, 185, 129, 0.1);
}

.stat-icon {
    font-size: 2.5rem;
    color: var(--verde-esmeralda);
    flex-shrink: 0;
}

.stat-content h3 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.stat-content p {
    font-size: 0.95rem;
    color: var(--texto-secundario);
    line-height: 1.6;
}

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

.services-section {
    background-color: var(--preto-absoluto);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}

.service-card {
    background-color: var(--cinza-medio);
    padding: 3rem 2.5rem;
    border-radius: 16px;
    border: 1px solid transparent;
    transition: all var(--transition-medium);
}

.service-card:hover {
    border-color: var(--verde-esmeralda);
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(16, 185, 129, 0.15);
}

.service-icon {
    font-size: 3rem;
    color: var(--verde-esmeralda);
    margin-bottom: 1.5rem;
}

.service-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.service-description {
    color: var(--texto-secundario);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.service-description strong {
    color: var(--branco);
    font-weight: 600;
}

.service-features {
    list-style: none;
}

.service-features li {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 0.75rem 0;
    color: var(--texto-secundario);
    font-size: 0.95rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.service-features li:last-child {
    border-bottom: none;
}

.service-features i {
    color: var(--verde-esmeralda);
    font-size: 0.85rem;
    margin-top: 0.25rem;
    flex-shrink: 0;
}

/* ================================================
   Contact Section
   ================================================ */

.contact-section {
    background-color: var(--cinza-escuro);
}

.contact-content {
    max-width: 800px;
    margin: 0 auto;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
    padding: 2.5rem;
    background-color: var(--cinza-medio);
    border-radius: 12px;
    border: 1px solid transparent;
    transition: all var(--transition-medium);
}

.contact-item:hover {
    border-color: var(--verde-esmeralda);
    transform: translateY(-5px);
}

.contact-icon {
    font-size: 2rem;
    color: var(--verde-esmeralda);
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.contact-item p,
.contact-item a {
    color: var(--texto-secundario);
    line-height: 1.6;
    font-size: 0.95rem;
}

.contact-item a {
    text-decoration: none;
    transition: color var(--transition-fast);
}

.contact-item a:hover {
    color: var(--verde-esmeralda);
}

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

.footer {
    background-color: var(--preto-absoluto);
    padding: var(--spacing-lg) 0 var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--branco);
}

.footer-logo i {
    color: var(--verde-esmeralda);
    font-size: 1.75rem;
}

.footer-tagline {
    color: var(--texto-secundario);
    font-size: 0.95rem;
}

.footer-compliance h4 {
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
    color: var(--verde-esmeralda);
    font-weight: 600;
}

.compliance-info p {
    color: var(--texto-secundario);
    font-size: 0.9rem;
    line-height: 1.8;
    margin-bottom: 0.75rem;
}

.compliance-info strong {
    color: var(--branco);
    font-weight: 600;
}

.compliance-info a {
    color: var(--verde-esmeralda);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.compliance-info a:hover {
    color: var(--verde-esmeralda-hover);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-bottom p {
    color: var(--texto-secundario);
    font-size: 0.9rem;
}

/* ================================================
   Responsive Design
   ================================================ */

@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: rgba(0, 0, 0, 0.98);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2rem;
        transition: left var(--transition-medium);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero-headline {
        font-size: 2.5rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    section {
        padding: var(--spacing-lg) 0;
    }
}

@media (max-width: 480px) {
    .hero-headline {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .service-card,
    .stat-item,
    .contact-item {
        padding: 2rem 1.5rem;
    }
}