/* Reset e Base Styles com melhorias 2025 */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px; /* Base para rem */
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

/* Paleta Azul Moderna com suporte a CSS Custom Properties */
:root {
    --blue-dark: #13293D;
    --blue-sapphire: #006494;
    --blue-celadon: #247BA0;
    --blue-carolina: #1B98E0;
    --blue-alice: #E8F1F2;
    --white: #FFFFFF;
    
    /* Variáveis para spacing e tipografia */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    --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;
    
    --border-radius-sm: 0.375rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    --border-radius-2xl: 1.5rem;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

/* Dark Mode Variables com melhor contraste */
[data-theme="dark"] {
    --blue-dark: #13293D;
    --blue-sapphire: #1B98E0;
    --blue-celadon: #247BA0;
    --blue-carolina: #1B98E0;
    --blue-alice: #181e26;
    --white: #FFFFFF;
    
    color-scheme: dark;
}

/* Suporte a prefers-color-scheme */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --blue-dark: #13293D;
        --blue-sapphire: #1B98E0;
        --blue-celadon: #247BA0;
        --blue-carolina: #1B98E0;
        --blue-alice: #181e26;
        --white: #FFFFFF;
        
        color-scheme: dark;
    }
}

/* Suporte a prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

body {
    min-height: 100vh;
    background: linear-gradient(180deg, #181e26 0%, #223047 100%) !important;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--blue-dark);
    background: var(--blue-alice);
    overflow-x: hidden;
    transition: background var(--transition-base), color var(--transition-base);
    font-size: var(--font-size-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

[data-theme="light"] body {
    background: linear-gradient(180deg, #E8F1F2 0%, #B6D0E2 100%) !important;
}

[data-theme="dark"] body {
    background: #181e26 !important;
    color: var(--white);
}

[data-theme="dark"] a,
[data-theme="dark"] a:visited,
[data-theme="dark"] a:active {
  color: #fff;
  text-decoration: none;
}
[data-theme="dark"] a:hover {
  color: var(--blue-carolina);
}

[data-theme="dark"] .contact-item a,
[data-theme="dark"] .contact-item a:visited,
[data-theme="dark"] .contact-item a:active {
  color: #fff;
  text-decoration: none;
}
[data-theme="dark"] .contact-item a:hover {
  color: var(--blue-carolina);
}

/* Skip link para acessibilidade */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--blue-dark);
    color: var(--white);
    padding: 8px 16px;
    text-decoration: none;
    border-radius: var(--border-radius-md);
    z-index: 10000;
    transition: top var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
    font-size: 14px;
    font-weight: 600;
    border: 2px solid var(--white);
    outline: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.skip-link:hover {
    background: var(--blue-carolina);
    color: var(--white);
    text-decoration: none;
    transform: scale(1.05);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4);
}

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

.skip-link:focus-visible {
    top: 6px;
    outline: 3px solid var(--blue-carolina);
    outline-offset: 2px;
}

.skip-link:focus:hover {
    background: var(--blue-carolina);
    color: var(--white);
    text-decoration: none;
}

/* Modo escuro - garantir visibilidade */
[data-theme="dark"] .skip-link {
    background: var(--blue-carolina);
    color: var(--white);
    border-color: var(--white);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .skip-link:hover,
[data-theme="dark"] .skip-link:focus:hover {
    background: var(--blue-celadon);
    color: var(--white);
    border-color: var(--white);
    box-shadow: 0 6px 16px rgba(255, 255, 255, 0.15);
}

[data-theme="dark"] .skip-link:focus-visible {
    outline-color: var(--white);
}

/* Screen reader only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

/* Container Queries (com fallback) */
@supports (container-type: inline-size) {
    .container {
        container-type: inline-size;
    }
    
    @container (max-width: 600px) {
        .service-card,
        .stat,
        .tech-item {
            padding: var(--spacing-lg);
            font-size: var(--font-size-sm);
        }
    }
}

/* Navbar com melhor suporte a backdrop-filter */
.navbar {
    display: flex;
    justify-content: center;
    align-items: center;
    background: transparent !important;
    color: var(--blue-dark);
    box-shadow: none !important;
    border: none !important;
    padding: 1.1rem 0;
    transition: background var(--transition-slow), color var(--transition-slow), transform var(--transition-base);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transform: translateY(0);
    will-change: transform;
}

/* Fallback para navegadores sem suporte a backdrop-filter */
@supports not (backdrop-filter: blur(12px)) {
    .navbar {
        background: rgba(232, 241, 242, 0.95);
    }
    
    [data-theme="dark"] .navbar {
        background: rgba(24, 30, 38, 0.95) !important;
    }
}

.navbar.navbar-hidden {
    transform: translateY(-100%);
}

.navbar.navbar-scrolled {
    background: rgba(232, 241, 242, 0.9);
    box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .navbar {
    background: transparent !important;
    box-shadow: none !important;
    border: none !important;
    color: var(--white);
}

[data-theme="dark"] .navbar.navbar-scrolled {
    background: rgba(24, 30, 38, 0.92) !important;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-2xl);
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    gap: var(--spacing-sm);
}

.nav-logo .logo-img {
    width: 4.2rem;
    height: 4.2rem;
    filter: none;
    transition: filter var(--transition-base);
}

.nav-menu {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 2.2rem;
    background: none;
    box-shadow: none;
    padding: 0;
}

.nav-link {
    font-size: var(--font-size-lg);
    font-weight: 500;
    letter-spacing: 0.01em;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    transition: background var(--transition-fast), color var(--transition-fast);
    text-decoration: none;
    color: var(--blue-dark);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--blue-carolina);
    transition: width var(--transition-base), left var(--transition-base);
}

.nav-link:hover::after,
.nav-link:focus::after {
    width: 100%;
    left: 0;
}

.nav-link:hover,
.nav-link:focus {
    background: rgba(27, 152, 224, 0.10);
    color: var(--blue-carolina);
}

/* Ícone para o produto alergIA */
.nav-product::before {
    content: "🎯";
    margin-right: 0.5rem;
    font-size: 1rem;
}

/* Hamburger menu com melhor acessibilidade */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 48px;
    height: 48px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
    transition: transform var(--transition-base);
}

.hamburger span {
    display: block;
    width: 28px;
    height: 3px;
    background: var(--blue-carolina);
    border-radius: 2px;
    margin: 3px 0;
    transition: all var(--transition-base);
    transform-origin: center;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

[data-theme="dark"] .hamburger span {
    background: #ffffff !important;
    box-shadow: 0 0 4px rgba(255, 255, 255, 0.3);
}

[data-theme="dark"] .hamburger {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    padding: 8px;
    backdrop-filter: blur(10px);
    transition: all var(--transition-base);
    box-shadow: 0 0 15px rgba(27, 152, 224, 0.4);
}

[data-theme="dark"] .hamburger:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

/* Theme Toggle com melhor UX */
.theme-toggle {
    margin-left: var(--spacing-lg);
}

.theme-switch {
    background: none;
    border: none;
    outline: none;
    cursor: pointer;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 54px;
    height: 28px;
    transition: transform var(--transition-fast);
}

.theme-switch:hover {
    transform: scale(1.05);
}

.theme-switch:active {
    transform: scale(0.95);
}

.switch-track {
    position: relative;
    width: 54px;
    height: 28px;
    background: linear-gradient(90deg, var(--blue-alice) 60%, #e0e0e0 100%);
    border-radius: 999px;
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    transition: background var(--transition-base);
}

.switch-icon {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.1rem;
    z-index: 2;
    pointer-events: none;
    transition: color var(--transition-base), opacity var(--transition-base);
}

.switch-icon.sun {
    left: 7px;
    color: #f7c948;
    opacity: 1;
}

.switch-icon.moon {
    right: 7px;
    color: #222;
    opacity: 0.5;
}

.theme-switch.active .switch-icon.sun {
    color: #aaa;
    opacity: 0.5;
}

.theme-switch.active .switch-icon.moon {
    color: #f7c948;
    opacity: 1;
}

.switch-thumb {
    position: absolute;
    left: 3px;
    top: 3px;
    width: 22px;
    height: 22px;
    background: var(--white);
    border-radius: 50%;
    box-shadow: var(--shadow-md);
    transition: left var(--transition-base), background var(--transition-base);
    z-index: 1;
}

.theme-switch.active .switch-thumb {
    left: 29px;
    background: #222;
}

[data-theme="dark"] .switch-track {
    background: linear-gradient(90deg, #444 60%, #222 100%);
}

[data-theme="dark"] .switch-thumb {
    background: var(--white);
}

/* Hero Section com melhor performance */
.hero {
    min-height: 80vh;
    padding: 6rem 0 3rem 0;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: transparent !important;
    overflow: hidden;
    contain: layout style paint;
}

[data-theme="dark"] .hero {
    background: #181e26 !important;
    color: var(--white) !important;
}

[data-theme="dark"] .hero-title {
    color: #ffffff !important;
}

[data-theme="dark"] .hero-title * {
    color: #ffffff !important;
}

[data-theme="dark"] .hero-description {
    color: #a0b3c7 !important;
    opacity: 0.95;
}

[data-theme="dark"] .floating-card {
    background: #223047 !important;
    color: var(--white) !important;
    border-color: #2a3441 !important;
}

[data-theme="dark"] .floating-card span {
    color: #ffffff !important;
}

.hero-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2xl);
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 700px;
    width: 100%;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(1.5rem, 4vw, 3.5rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: var(--spacing-md);
    padding: 0 var(--spacing-sm);
    word-break: break-word;
    overflow-wrap: anywhere;
    hyphens: auto;
    width: 100%;
    max-width: 100%;
    text-align: center;
    display: block;
}

.hero-description {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
    color: var(--blue-celadon);
    opacity: 0.95;
    max-width: 480px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 10;
    justify-content: center;
}

/* Botões com melhor acessibilidade e performance */
.btn {
    padding: var(--spacing-lg) var(--spacing-2xl);
    border: none;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    cursor: pointer;
    font-size: var(--font-size-base);
    min-height: 44px;
    min-width: 44px;
    position: relative;
    overflow: hidden;
    will-change: transform;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--blue-carolina);
    color: var(--white);
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover,
.btn-primary:focus {
    background: var(--blue-sapphire);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

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

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

/* Floating cards com melhor performance */
.hero-visual {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    align-items: flex-start;
    justify-content: flex-start;
    min-width: 220px;
    margin-top: var(--spacing-md);
}

.floating-card {
    background: var(--white);
    border: 1px solid var(--blue-alice);
    color: var(--blue-dark);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-lg) var(--spacing-2xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-weight: 600;
    font-size: var(--font-size-lg);
    box-shadow: var(--shadow-lg);
    margin-bottom: var(--spacing-xs);
    animation: float 6s ease-in-out infinite;
    will-change: transform;
}

.floating-card:nth-child(2) {
    animation-delay: -2s;
}

.floating-card:nth-child(3) {
    animation-delay: -4s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-16px);
    }
}

.floating-card i {
    font-size: 1.5rem;
    color: var(--blue-carolina);
}

/* Gradient text com melhor suporte */
.gradient-text {
    background: linear-gradient(90deg, var(--blue-sapphire), var(--blue-carolina));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
    display: inline;
}

/* Fallback para navegadores sem suporte */
@supports not (-webkit-background-clip: text) {
    .gradient-text {
        color: var(--blue-carolina);
    }
}

/* Gradient text no modo escuro */
[data-theme="dark"] .gradient-text {
    background: linear-gradient(90deg, #60a5fa, #3b82f6, #1d4ed8) !important;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
    background-clip: text !important;
    color: transparent !important;
}

/* Fallback para modo escuro sem suporte a background-clip */
@supports not (-webkit-background-clip: text) {
    [data-theme="dark"] .gradient-text {
        color: #60a5fa !important;
        background: none !important;
    }
}

/* Background com melhor performance */
.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
    display: none !important;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(0, 100, 148, 0.10), rgba(27, 152, 224, 0.10));
    animation: pulse 4s ease-in-out infinite;
    will-change: transform, opacity;
    display: none !important;
}

.gradient-orb:nth-child(1) {
    width: 300px;
    height: 300px;
    top: 10%;
    right: 10%;
    animation-delay: 0s;
}

.gradient-orb:nth-child(2) {
    width: 200px;
    height: 200px;
    bottom: 20%;
    left: 5%;
    animation-delay: 2s;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.5;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-header h2 {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    background: linear-gradient(90deg, var(--blue-sapphire), var(--blue-carolina));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header p {
    font-size: var(--font-size-xl);
    color: var(--blue-celadon);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* About Section */
.about {
    padding: 6rem 0;
    background: var(--blue-alice);
}

.about-content-vertical {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2.5rem;
    margin-top: var(--spacing-2xl);
}

.about-cards-values,
.about-cards-tech {
    display: grid;
    gap: var(--spacing-lg);
    width: 100%;
    max-width: 900px;
    justify-items: center;
}

.about-cards-values {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.about-cards-tech {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.stat,
.tech-item {
    background: var(--white);
    border-radius: var(--border-radius-2xl);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
    border: 1px solid var(--blue-alice);
    min-height: 150px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.23, 1.01, 0.32, 1);
    will-change: transform, opacity;
}

.stat {
    text-align: center;
    padding: var(--spacing-2xl);
}

.tech-item {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-weight: 600;
    color: var(--blue-dark);
}

.stat:hover,
.tech-item:hover {
    transform: translateY(-8px) scale(1.03);
    box-shadow: var(--shadow-xl);
    z-index: 2;
}

.stat h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--blue-carolina);
    margin-bottom: var(--spacing-lg);
}

.stat p {
    color: var(--blue-celadon);
    font-weight: 500;
    line-height: 1.6;
}

.tech-item i {
    font-size: 2rem;
    color: var(--blue-carolina);
    margin-bottom: var(--spacing-sm);
}

.stat.visible,
.tech-item.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Services Section */
.services {
    padding: 6rem 0;
    background: var(--white);
}

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

.service-card {
    background: var(--blue-alice);
    padding: 2.5rem;
    border-radius: var(--border-radius-2xl);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
    border: 1px solid var(--blue-celadon);
    color: var(--blue-dark);
    will-change: transform;
}

.service-card:hover {
    transform: translateY(-15px);
    box-shadow: var(--shadow-xl);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: var(--blue-sapphire);
    border-radius: var(--border-radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    transition: transform var(--transition-base);
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
}

.service-icon i {
    font-size: 2rem;
    color: var(--white);
}

.service-card h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-lg);
    color: var(--blue-carolina);
}

.service-card p {
    color: var(--blue-celadon);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.service-card ul {
    list-style: none;
}

.service-card li {
    padding: var(--spacing-sm) 0;
    color: var(--blue-celadon);
    position: relative;
    padding-left: var(--spacing-lg);
}

.service-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--blue-carolina);
    font-weight: bold;
}

/* Contact Section */
.contact {
    padding: 6rem 0;
    background: var(--blue-alice);
}

.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-3xl);
}

.contact-info h3 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-lg);
    color: var(--blue-dark);
}

.contact-info p {
    color: var(--blue-celadon);
    margin-bottom: var(--spacing-2xl);
    font-size: var(--font-size-lg);
    line-height: 1.6;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.contact-item i {
    width: 60px;
    height: 60px;
    background: var(--blue-sapphire);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    transition: all var(--transition-base);
    animation: contact-pulse 2.5s infinite;
}

.contact-item:nth-child(1) i:hover {
    animation: contact-swing 0.7s;
}

.contact-item:nth-child(2) i:hover {
    animation: contact-shake 0.5s;
}

.contact-item:nth-child(3) i:hover {
    animation: contact-bounce 0.7s;
}

@keyframes contact-pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(0, 100, 148, 0.15);
    }
    50% {
        box-shadow: 0 0 0 8px rgba(0, 100, 148, 0.10);
    }
}

@keyframes contact-swing {
    20% { transform: rotate(15deg); }
    40% { transform: rotate(-10deg); }
    60% { transform: rotate(5deg); }
    80% { transform: rotate(-5deg); }
    100% { transform: rotate(0deg); }
}

@keyframes contact-shake {
    10%, 90% { transform: translateX(-2px); }
    20%, 80% { transform: translateX(4px); }
    30%, 50%, 70% { transform: translateX(-6px); }
    40%, 60% { transform: translateX(6px); }
    100% { transform: translateX(0); }
}

@keyframes contact-bounce {
    0%, 100% { transform: translateY(0); }
    30% { transform: translateY(-10px); }
    50% { transform: translateY(-5px); }
    70% { transform: translateY(-10px); }
}

.contact-item h4 {
    color: var(--blue-dark);
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-lg);
}

.contact-item p {
    color: var(--blue-celadon);
    margin: 0;
}

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

.contact-item a:hover,
.contact-item a:focus {
    color: var(--blue-carolina);
}

/* WhatsApp icon styling */
.contact-item .fa-whatsapp {
    background: #25D366 !important;
    color: white;
}

.contact-item .fa-whatsapp:hover {
    background: #128C7E !important;
    transform: scale(1.1);
}

/* Form com melhor acessibilidade */
.contact-form {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--border-radius-2xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--blue-alice);
    transition: all var(--transition-base);
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-lg);
    border: 2px solid var(--blue-carolina); /* Borda azul padrão */
    border-radius: var(--border-radius-lg);
    font-size: var(--font-size-base);
    transition: all var(--transition-base);
    font-family: inherit;
    color: #13293D !important; /* Preto no modo claro */
    background: var(--blue-alice);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--blue-carolina); /* Borda azul no foco */
    box-shadow: 0 0 0 3px rgba(27, 152, 224, 0.3); /* Sombra azul no foco */
}

.form-group input:invalid,
.form-group textarea:invalid {
    border-color: var(--blue-carolina); /* Borda azul para campos inválidos */
}

[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group textarea {
    border-color: var(--blue-carolina) !important; /* Borda azul no modo escuro */
    color: #fff !important; /* Branco no modo escuro */
    background: #223047 !important;
}

[data-theme="dark"] .form-group input:focus,
[data-theme="dark"] .form-group textarea:focus {
    border-color: var(--blue-carolina) !important;
    box-shadow: 0 0 0 3px rgba(27, 152, 224, 0.3) !important;
}

[data-theme="dark"] .form-group input:invalid,
[data-theme="dark"] .form-group textarea:invalid {
    border-color: var(--blue-carolina) !important;
}

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

.field-error {
    color: #b00020;
    font-size: 0.95rem;
    margin-top: 0.25rem;
    margin-bottom: 0.5rem;
    min-height: 1.2em;
    transition: color var(--transition-base);
}
[data-theme="dark"] .field-error {
    color: #fff;
}

/* Footer */
.footer {
    background: var(--blue-dark);
    color: var(--white);
    padding: var(--spacing-3xl) 0 var(--spacing-2xl);
    transition: all var(--transition-base);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
}

.footer-logo .logo-img {
    width: 5rem;
    height: 5rem;
    object-fit: contain;
}

.footer-section h4 {
    margin-bottom: var(--spacing-lg);
    color: var(--blue-carolina);
    font-size: var(--font-size-lg);
}

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

.footer-section ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-section ul li a {
    color: var(--blue-alice);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-section ul li a:hover,
.footer-section ul li a:focus {
    color: var(--blue-carolina);
}

/* SOCIAL LINKS: Ícones com melhor comportamento de hover/toque */
.social-links {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    align-items: center;
}

.social-links span {
    width: 50px;
    height: 50px;
    background: transparent;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.social-links span::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.social-links span:hover::before {
    opacity: 1;
}

.social-links span i {
    font-size: 1.5rem;
    color: #ffffff !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 2;
    position: relative;
}

/* Animações de hover com correções */
.social-links span:hover {
    transform: translateY(-3px) scale(1.1);
    border-color: rgba(255, 255, 255, 0.6);
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.15);
}

/* Animação de pulso separada que não depende do estado hover */
.social-links span:hover {
    animation-name: socialPulse;
    animation-duration: 1.5s;
    animation-iteration-count: infinite;
    animation-timing-function: ease-in-out;
}

.social-links span:hover i {
    transform: scale(1.2);
    color: #ffffff !important;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.social-links span:active {
    transform: translateY(-1px) scale(1.05);
    transition: all 0.1s ease;
}

/* Animação de pulso definida separadamente */
@keyframes socialPulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.4);
    }
    50% {
        box-shadow: 0 0 0 8px rgba(255, 255, 255, 0);
    }
}

/* Suporte para interação em dispositivos touch */
@media (hover: none) {
    .social-links span {
        transition: all 0.3s ease;
    }
    
    .social-links span:active {
        transform: translateY(-3px) scale(1.1);
        border-color: rgba(255, 255, 255, 0.6);
        box-shadow: 0 8px 25px rgba(255, 255, 255, 0.15);
        animation: socialPulse 1.5s 1;
    }
    
    .social-links span:active i {
        transform: scale(1.2);
        color: #ffffff !important;
        text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
    }
}

/* Modo escuro - mantém os ícones brancos */
[data-theme="dark"] .social-links span {
    border-color: rgba(255, 255, 255, 0.2) !important;
    background: rgba(255, 255, 255, 0.05) !important;
}

[data-theme="dark"] .social-links span:hover {
    border-color: rgba(255, 255, 255, 0.5) !important;
    background: rgba(255, 255, 255, 0.1) !important;
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.1) !important;
}

[data-theme="dark"] .social-links span i {
    color: #ffffff !important;
}

[data-theme="dark"] .social-links span:hover i {
    color: #ffffff !important;
    text-shadow: 0 0 15px rgba(255, 255, 255, 0.7) !important;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--blue-alice);
    color: var(--blue-alice);
}

/* Responsive Design com Mobile First */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-container {
        padding: 0 var(--spacing-lg);
    }

    .nav-menu {
        background: var(--white);
        box-shadow: var(--shadow-xl);
        position: fixed;
        left: 0;
        top: 70px;
        width: 100vw;
        min-height: calc(100vh - 70px);
        z-index: 2000;
        display: none;
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-2xl) 0;
        transition: opacity var(--transition-base);
    }

    .nav-menu.active {
        display: flex;
        opacity: 1;
    }

    .nav-menu li {
        width: 100%;
        padding: 0 var(--spacing-2xl);
    }

    .nav-link {
        display: block;
        width: 100%;
        padding: var(--spacing-lg);
        font-size: var(--font-size-lg);
    }

    .theme-toggle {
        margin-left: var(--spacing-md);
    }

    .theme-switch {
        width: 44px;
        height: 22px;
    }

    .switch-track {
        width: 44px;
        height: 22px;
    }

    .switch-thumb {
        width: 16px;
        height: 16px;
        left: 3px;
        top: 3px;
    }

    .theme-switch.active .switch-thumb {
        left: 21px;
    }

    .switch-icon {
        font-size: 0.9rem;
    }

    .switch-icon.sun {
        left: 5px;
    }

    .switch-icon.moon {
        right: 5px;
    }

    .hero-container {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-2xl);
    }

    .hero-visual {
        align-items: center;
        margin-top: var(--spacing-lg);
    }

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

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

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

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

    .section-header h2 {
        font-size: var(--font-size-3xl);
    }

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

    .container {
        padding: 0 var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: clamp(1.25rem, 6vw, 1.75rem);
    }

    .hero-description {
        font-size: var(--font-size-base);
    }

    .btn {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: var(--font-size-sm);
    }

    .section-header h2 {
        font-size: var(--font-size-2xl);
    }

    .service-card,
    .contact-form {
        padding: var(--spacing-lg);
    }

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

    .container {
        padding: 0 var(--spacing-md);
    }
}

/* Dark Mode específico para componentes */
[data-theme="dark"] .navbar {
    background: transparent !important;
    box-shadow: none !important;
    border: none !important;
    color: var(--white) !important;
}

[data-theme="dark"] .nav-logo,
[data-theme="dark"] .nav-link {
    color: #ffffff !important;
}

[data-theme="dark"] .nav-link:hover,
[data-theme="dark"] .nav-link:focus {
    color: var(--blue-carolina) !important;
}

[data-theme="dark"] .nav-logo .logo-img {
    filter: drop-shadow(0 0 6px #1B98E0) brightness(1.2) contrast(1.2);
}

[data-theme="dark"] .nav-menu {
    background: rgba(24, 30, 38, 0.98) !important;
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4) !important;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .nav-menu.active {
    display: flex;
    opacity: 1;
}

[data-theme="dark"] .nav-menu li {
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .nav-menu li:last-child {
    border-bottom: none;
}

[data-theme="dark"] .nav-link {
    color: #ffffff !important;
    transition: all var(--transition-base);
    border-radius: 8px;
    margin: 4px 0;
}

[data-theme="dark"] .nav-link:hover,
[data-theme="dark"] .nav-link:focus {
    background: rgba(27, 152, 224, 0.15) !important;
    color: #60a5fa !important;
    transform: translateX(8px);
}

[data-theme="dark"] .about,
[data-theme="dark"] .services,
[data-theme="dark"] .contact {
    background: #10151b !important;
}

[data-theme="dark"] .service-card,
[data-theme="dark"] .stat,
[data-theme="dark"] .tech-item,
[data-theme="dark"] .contact-form {
    background: #181e26 !important;
    color: var(--white) !important;
    border-color: #222a35 !important;
}

[data-theme="dark"] .tech-item span {
    color: #ffffff !important;
}

[data-theme="dark"] .tech-item i {
    color: var(--blue-carolina) !important;
}

[data-theme="dark"] .service-card h3,
[data-theme="dark"] .stat h3 {
    color: #60a5fa !important;
}

[data-theme="dark"] .service-card p,
[data-theme="dark"] .service-card li,
[data-theme="dark"] .stat p {
    color: #ffffff !important;
}

[data-theme="dark"] .footer {
    background: #0a0f14 !important;
}

[data-theme="dark"] .footer-logo .logo-img {
    filter: drop-shadow(0 0 6px #1B98E0) brightness(1.2) contrast(1.2);
}

[data-theme="dark"] .footer-logo span {
    color: #ffffff !important;
}

[data-theme="dark"] .footer-section h4 {
    color: var(--blue-carolina) !important;
}

[data-theme="dark"] .footer-section ul li a {
    color: #ffffff !important;
    position: relative;
    transition: background var(--transition-fast), color var(--transition-fast);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    display: inline-block;
}

[data-theme="dark"] .footer-section ul li a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--blue-carolina);
    transition: width var(--transition-base), left var(--transition-base);
}

[data-theme="dark"] .footer-section ul li a:hover::after,
[data-theme="dark"] .footer-section ul li a:focus::after {
    width: 100%;
    left: 0;
}

[data-theme="dark"] .footer-section ul li a:hover,
[data-theme="dark"] .footer-section ul li a:focus {
    background: rgba(27, 152, 224, 0.10);
    color: var(--blue-carolina) !important;
}

/* Animações para modo claro */
.footer-section ul li a {
    position: relative;
    transition: background var(--transition-fast), color var(--transition-fast);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    display: inline-block;
}

.footer-section ul li a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--blue-carolina);
    transition: width var(--transition-base), left var(--transition-base);
}

.footer-section ul li a:hover::after,
.footer-section ul li a:focus::after {
    width: 100%;
    left: 0;
}

.footer-section ul li a:hover,
.footer-section ul li a:focus {
    background: rgba(27, 152, 224, 0.10);
    color: var(--blue-carolina);
}

[data-theme="dark"] .footer-section p {
    color: #ffffff !important;
}

[data-theme="dark"] .footer-bottom {
    color: #ffffff !important;
}



/* Animações e transições aprimoradas */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Animações para cards */
@keyframes cardSlideIn {
    0% {
        opacity: 0;
        transform: translateY(50px) scale(0.9);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes cardPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.02);
    }
}

@keyframes cardGlow {
    0%, 100% {
        box-shadow: var(--shadow-lg);
    }
    50% {
        box-shadow: 0 20px 40px rgba(27, 152, 224, 0.3);
    }
}

/* Aplicando animações aos cards */
.service-card {
    animation: cardSlideIn 0.8s ease-out;
    animation-fill-mode: both;
}

.service-card:nth-child(1) { animation-delay: 0.1s; }
.service-card:nth-child(2) { animation-delay: 0.2s; }
.service-card:nth-child(3) { animation-delay: 0.3s; }
.service-card:nth-child(4) { animation-delay: 0.4s; }

.service-card:hover {
    animation: cardPulse 2s ease-in-out infinite, cardGlow 2s ease-in-out infinite;
}

.tech-item {
    animation: cardSlideIn 0.6s ease-out;
    animation-fill-mode: both;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.tech-item:nth-child(1) { animation-delay: 0.1s; }
.tech-item:nth-child(2) { animation-delay: 0.2s; }
.tech-item:nth-child(3) { animation-delay: 0.3s; }
.tech-item:nth-child(4) { animation-delay: 0.4s; }

.tech-item:hover {
    transform: translateY(-8px) scale(1.05) rotate(2deg);
    box-shadow: 0 15px 30px rgba(27, 152, 224, 0.4);
}

.stat {
    animation: cardSlideIn 0.7s ease-out;
    animation-fill-mode: both;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.stat:nth-child(1) { animation-delay: 0.1s; }
.stat:nth-child(2) { animation-delay: 0.2s; }
.stat:nth-child(3) { animation-delay: 0.3s; }

.stat:hover {
    transform: translateY(-10px) scale(1.03);
    box-shadow: 0 20px 40px rgba(27, 152, 224, 0.3);
}

/* Animação para ícones dos cards */
@keyframes iconBounce {
    0%, 100% {
        transform: scale(1) rotate(0deg);
    }
    25% {
        transform: scale(1.1) rotate(-5deg);
    }
    75% {
        transform: scale(1.1) rotate(5deg);
    }
}

.service-card:hover .service-icon {
    animation: iconBounce 0.6s ease-in-out;
}

.tech-item:hover i {
    animation: iconBounce 0.6s ease-in-out;
}

/* Animação de entrada para seções */
@keyframes sectionFadeIn {
    0% {
        opacity: 0;
        transform: translateY(40px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-header {
    animation: sectionFadeIn 0.8s ease-out;
}

/* Animação de hover para botões */
@keyframes buttonPulse {
    0% {
        box-shadow: 0 0 0 0 rgba(27, 152, 224, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(27, 152, 224, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(27, 152, 224, 0);
    }
}

.btn:hover {
    animation: buttonPulse 1.5s infinite;
}

/* Loading animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--white);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .btn {
        border: 2px solid currentColor;
    }
    
    .nav-link:hover,
    .nav-link:focus {
        background: var(--blue-carolina);
        color: var(--white);
    }
}

/* Print styles */
@media print {
    .navbar,
    .hamburger,
    .theme-toggle,
    .hero-background,
    .floating-card {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .hero {
        min-height: auto;
        padding: 2rem 0;
    }
    
    .section-header h2 {
        color: black !important;
        background: none !important;
        -webkit-text-fill-color: initial !important;
    }
}

/* Focus management */
.focus-trap {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    background: rgba(0, 0, 0, 0.5);
    display: none;
}

.focus-trap.active {
    display: block;
}

/* Utility classes */
.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.no-scroll {
    overflow: hidden;
}

/* Performance optimizations */
.hero-background,
.floating-card,
.gradient-orb {
    will-change: transform;
}

.btn,
.nav-link,
.service-card,
.stat,
.tech-item {
    will-change: transform;
}

/* Ensure buttons are always clickable */
.hero-buttons {
    position: relative;
    z-index: 10;
}

.btn-primary,
.btn-secondary {
    position: relative;
    z-index: 10;
    pointer-events: auto !important;
}

main {
    background: transparent !important;
}

body::before, body::after,
html::before, html::after,
.hero::before, .hero::after {
    display: none !important;
}

/* ===== MENU RESET ESTÁVEL ===== */
.navbar {
    transform: translateY(0);
}

.nav-menu {
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 2.2rem;
    border: none;
}

.nav-menu li {
    margin: 0;
    padding: 0;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    line-height: 1.1;
    margin: 0 !important;
    transform: none !important;
    will-change: auto !important;
}

.nav-link::after {
    content: none !important;
}

.nav-link:hover,
.nav-link:focus,
[data-theme="dark"] .nav-link:hover,
[data-theme="dark"] .nav-link:focus {
    background: transparent !important;
    transform: none !important;
}

.nav-link.active {
    color: var(--blue-carolina) !important;
    background: transparent !important;
}

[data-theme="dark"] .nav-link {
    margin: 0 !important;
    border-radius: var(--border-radius-sm) !important;
}

[data-theme="dark"] .nav-link.active {
    color: #60a5fa !important;
    background: transparent !important;
}

@media (min-width: 769px) {
    .nav-menu {
        display: flex;
        background: none;
        box-shadow: none;
    }

    [data-theme="dark"] .nav-menu {
        background: none !important;
        box-shadow: none !important;
        border-top: none !important;
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
    }

    [data-theme="dark"] .nav-menu li {
        border-bottom: none !important;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        flex-direction: column;
        align-items: flex-start;
        position: fixed;
        left: 0;
        top: 70px;
        width: 100vw;
        min-height: calc(100vh - 70px);
        z-index: 2000;
        padding: var(--spacing-2xl) 0;
        background: var(--white);
        box-shadow: var(--shadow-xl);
    }

    .nav-menu.active {
        display: flex;
        opacity: 1;
    }

    .nav-menu li {
        width: 100%;
        padding: 0 var(--spacing-2xl);
    }

    .nav-link {
        display: block !important;
        width: 100%;
        padding: var(--spacing-lg);
        font-size: var(--font-size-lg);
    }

    [data-theme="dark"] .nav-menu {
        background: rgba(24, 30, 38, 0.98) !important;
        backdrop-filter: blur(20px) saturate(180%);
        -webkit-backdrop-filter: blur(20px) saturate(180%);
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4) !important;
        border-top: 1px solid rgba(255, 255, 255, 0.1) !important;
    }

    [data-theme="dark"] .nav-menu li {
        border-bottom: 1px solid rgba(255, 255, 255, 0.05) !important;
    }

    [data-theme="dark"] .nav-menu li:last-child {
        border-bottom: none !important;
    }
}

@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .services-grid {
        grid-template-columns: 1fr;
    }
}

/* Variações sutis de fundo para sessões no modo escuro */
[data-theme="dark"] .about {
    background: #10151b !important; /* já existente, mantém para About */
}
[data-theme="dark"] .services {
    background: #151b22 !important; /* tom levemente diferente para Services */
}
[data-theme="dark"] .contact {
    background: #181e26 !important; /* tom ainda mais claro para Contact */
}

/* Alternância para sessões subsequentes, caso precise de mais variações */
[data-theme="dark"] .section-dark-1 { background: #10151b !important; }
[data-theme="dark"] .section-dark-2 { background: #151b22 !important; }
[data-theme="dark"] .section-dark-3 { background: #181e26 !important; }

/* Ajuste para garantir contraste e harmonia nos cards das sessões */
[data-theme="dark"] .service-card,
[data-theme="dark"] .stat,
[data-theme="dark"] .tech-item,
[data-theme="dark"] .contact-form {
    background: #202733 !important;
    color: var(--white) !important;
    border-color: #222a35 !important;
}

[data-theme="dark"] .btn-primary:hover,
[data-theme="dark"] .btn-primary:focus {
    background: var(--blue-carolina) !important;
    color: var(--white) !important;
    box-shadow: var(--shadow-xl);
    transform: translateY(-2px);
}

[data-theme="dark"] .btn-secondary:hover,
[data-theme="dark"] .btn-secondary:focus {
    background: var(--blue-carolina) !important;
    color: var(--white) !important;
    border-color: var(--blue-carolina) !important;
    transform: translateY(-2px);
}

/* Language Selector */
.language-selector {
  position: relative;
  display: inline-block;
  margin-left: 1.5rem;
}
.lang-btn {
  background: #fff;
  border: none;
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(30, 41, 59, 0.08);
  padding: 6px 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  transition: box-shadow 0.2s;
  width: 48px;
  height: 48px;
  justify-content: center;
}
.lang-btn:focus {
  outline: 2px solid var(--blue-carolina, #1B98E0);
}
.lang-flag {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  /* Sem fundo, padding ou borda */
}
.lang-flag img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
[data-theme="dark"] .lang-flag {
  background: none;
  border: none;
}
.lang-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(30, 41, 59, 0.12);
  padding: 10px 0;
  width: 48px;
  z-index: 100;
  flex-direction: column;
  gap: 2px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.18s, visibility 0.18s;
  display: flex;
  animation: none;
}
.language-selector.open .lang-dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}
.lang-option {
  background: none;
  border: none;
  width: 100%;
  padding: 6px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.15s;
  border-radius: 8px;
}
.lang-option:hover, .lang-option:focus {
  background: var(--blue-carolina, #1B98E0);
}
.lang-option .lang-flag {
  margin-right: 0;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}
@media (max-width: 600px) {
  .language-selector {
    margin-left: 0.5rem;
  }
  .lang-dropdown {
    min-width: 44px;
    width: 44px;
    left: 50%;
    right: auto;
    transform: translateX(-50%);
  }
  .lang-btn {
    width: 44px;
    height: 44px;
  }
  .lang-flag {
    width: 20px;
    height: 20px;
  }
}

/* Dark Theme Styles for Language Selector */
[data-theme="dark"] .lang-btn {
  background: var(--blue-dark, #13293D);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}
[data-theme="dark"] .lang-btn:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}
[data-theme="dark"] .lang-dropdown {
  background: var(--blue-dark, #13293D);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}
[data-theme="dark"] .lang-option:hover, 
[data-theme="dark"] .lang-option:focus {
  background: var(--blue-carolina, #1B98E0);
}

/* Dark theme corrections for contact items */
[data-theme="dark"] .contact-item h4 {
  color: var(--blue-carolina, #1B98E0);
}
[data-theme="dark"] .contact-item p {
  color: #fff;
}
[data-theme="dark"] .contact-item a {
  color: #fff;
}
[data-theme="dark"] .contact-item a:hover {
  color: var(--blue-carolina, #1B98E0);
}
[data-theme="dark"] .contact-info h3 {
  color: var(--blue-carolina, #1B98E0);
}
/* Fim Language Selector */

/* reCAPTCHA v3 badge customization */
.grecaptcha-badge {
    visibility: hidden;
}

}

.contact-form button[type="submit"] {
    display: block;
    width: 100%;
    margin: 24px 0 0 0;
    border-radius: 32px;
    font-weight: 700;
    font-size: 1.15rem;
    box-shadow: 0 4px 24px rgba(27, 152, 224, 0.12);
}