/* Reset e Variáveis */
:root {
    --primary-blue: #070F26;
    --secondary-blue: #2c5282;
    --light-blue: #4299e1;
    --accent-yellow: #f6ad55;
    --accent-gold: #ed8936;
    --white: #ffffff;
    --light-gray: #f7fafc;
    --gray: #718096;
    --dark-gray: #2d3748;
    --text-dark: #1a202c;
    --gradient-start: #1e3a5f;
    --gradient-end: #2c5282;
    
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --transition: all 0.3s ease;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    top: 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.nav-link {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    padding: 0.5rem 0;
    position: relative;
}

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

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

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

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--white);
    transition: var(--transition);
    border-radius: 2px;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

.menu-toggle:focus {
    outline: 2px solid var(--lighter-blue);
    outline-offset: 4px;
}

/* Hero Section */
.hero {
    background-color: var(--white);
    text-align: center;
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-container {
    max-width: 800px;
    margin: 0 auto;
}

.hero-image {
    display: flex;
    margin: 2rem auto 0;
    margin-bottom: 2rem;
    height: 430px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-description {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
    line-height: 1.8;
}

.btn-primary {
    display: inline-block;
    background-color: #31cf8d;
    color: var(--white);
    padding: 1rem 2.5rem;
    text-decoration: none;
    font-weight: 600;
    border-radius: 8px;
    transition: var(--transition);
    font-size: 1.1rem;
}

/* Services Section */
.services {
    padding: 2rem 0;
    background-color: var(--light-gray);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
    align-items: stretch;
}

.service-card {
    background-color: var(--white);
    padding: 2.5rem 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    height: 100%;
}

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

.service-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1.5rem;
    color: var(--primary-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.service-icon svg {
    width: 100%;
    height: 100%;
}

.service-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-dark);
    line-height: 1.3;
}

.service-description {
    color: var(--gray);
    line-height: 1.7;
    flex-grow: 1;
    margin: 0;
}

/* Accordion */
.services-accordion {
    max-width: 800px;
    margin: 0 auto;
}

.accordion-item {
    background-color: var(--white);
    border-radius: 8px;
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.accordion-header {
    width: 100%;
    padding: 1.5rem;
    background-color: var(--white);
    border: none;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-dark);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
    font-family: var(--font-family);
}

.accordion-header:hover,
.accordion-header:focus {
    background-color: #f1f1f1;
    outline: none;
}

.accordion-header:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: -2px;
}

.accordion-icon {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--primary-blue);
    transition: var(--transition);
}

.accordion-header[aria-expanded="true"] .accordion-icon {
    transform: rotate(45deg);
}

.accordion-content {
    margin-left: 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    padding: 0 1.5rem;
}

.accordion-content.active {
    max-height: 500px;
    padding: 0 1.5rem 1.5rem;
}

.accordion-content p {
    color: var(--gray);
    line-height: 1.7;
}

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

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

.about-text {
    font-size: 1.1rem;
    color: var(--gray);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.diferenciais-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.diferencial-card {
    background-color: var(--light-gray);
    padding: 2.5rem;
    border-radius: 12px;
    text-align: center;
    transition: var(--transition);
}

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

.diferencial-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1.5rem;
    color: var(--accent-gold);
    display: flex;
    align-items: center;
    justify-content: center;
}

.diferencial-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.diferencial-description {
    color: var(--gray);
    line-height: 1.7;
}

/* Contact Section */
.contact {
    padding: 3rem 0;
    background-color: var(--light-gray);
}

.contact-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: var(--gray);
    margin-bottom: 2rem;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.contact-form {
    max-width: 700px;
    margin: 0 auto;
    background-color: var(--white);
    padding: 3rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-dark);
}

.required {
    color: #e53e3e;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-family: var(--font-family);
    font-size: 1rem;
    transition: var(--transition);
    background-color: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.1);
}

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

.error-message {
    display: block;
    color: #e53e3e;
    font-size: 0.875rem;
    margin-top: 0.25rem;
    min-height: 1.25rem;
}

.btn-submit {
    width: 100%;
    background-color: var(--accent-yellow);
    color: var(--white);
    padding: 1rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-family);
}

.btn-submit:hover,
.btn-submit:focus {
    background-color: var(--accent-gold);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    outline: none;
}

.btn-submit:active {
    transform: translateY(0);
}

/* Footer */
.footer {
    background-color: var(--white);
    color: var(--text-dark);
    padding: 3rem 0 1.5rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-left {
    flex: 1;
    min-width: 250px;
}

.footer-logo {
    margin-bottom: 1.5rem;
}

.footer-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.footer-subtitle {
    font-size: 0.95rem;
    color: var(--gray);
    margin-bottom: 1.5rem;
}

.footer-social {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.social-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: var(--white);
    transition: var(--transition);
    text-decoration: none;
}

.social-icon:hover {
    background-color: var(--light-gray);
    transform: translateY(-2px);
}

.social-icon img {
    width: 100%;
    height: 100%;
    display: block;
}

.footer-right {
    flex: 1;
    min-width: 200px;
}

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

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

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

.footer-links a {
    color: var(--text-dark);
    text-decoration: none;
    font-size: 0.95rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-blue);
    text-decoration: underline;
}

.footer-bottom {
    margin-top: 2rem;
}

.footer-divider {
    height: 1px;
    background-color: #e2e8f0;
    margin-bottom: 1.5rem;
}

.footer-bottom-content {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-copyright {
    font-size: 0.875rem;
    color: var(--gray);
    margin: 0;
}

.footer-legal {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.footer-legal a {
    color: var(--text-dark);
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--transition);
}

.footer-legal a:hover {
    color: var(--primary-blue);
    text-decoration: underline;
}

.back-to-top {
    display: inline-block;
    background-color: var(--primary-blue);
    color: var(--white);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-size: 0.9rem;
    text-decoration: none;
    transition: var(--transition);
}

.back-to-top img {
    width: 18px;
    height: 18px;
    margin-left: 0.5rem;
    vertical-align: middle;
}

/* Responsividade */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--primary-blue);
        flex-direction: column;
        padding: 1rem 20px;
        gap: 0;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
        box-shadow: var(--shadow-lg);
    }

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

    .nav-menu li {
        width: 100%;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-link {
        display: block;
        padding: 1rem 0;
    }

    .hero {
        padding: 4rem 20px;
        min-height: 60vh;
    }

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

    .hero-description {
        font-size: 1.1rem;
    }

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

    .services-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

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

    .contact-form {
        padding: 2rem 1.5rem;
    }

    .footer-content {
        flex-direction: column;
    }

    .footer-left,
    .footer-right {
        width: 100%;
    }

    .footer-social {
        justify-content: center;
    }

    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-legal {
        justify-content: center;
    }
}

/* Tablet - 2 colunas */
@media (min-width: 769px) and (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
}

/* Mobile - 1 coluna */
@media (max-width: 768px) {
    .services-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

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

    .hero-description {
        font-size: 1rem;
    }

    .btn-primary {
        padding: 0.875rem 2rem;
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .service-card,
    .diferencial-card {
        padding: 2rem 1.5rem;
    }
}

/* Acessibilidade - Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-blue);
    color: var(--white);
    padding: 8px;
    text-decoration: none;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}

/* Melhorias de acessibilidade */
*:focus-visible {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

button:focus-visible,
a:focus-visible {
    outline: 2px solid var(--primary-blue);
    outline-offset: 4px;
}

/* Animações suaves */
@media (prefers-reduced-motion: no-preference) {
    .service-card,
    .diferencial-card {
        animation: fadeInUp 0.6s ease-out;
    }

    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(20px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
}

/* Modo de alto contraste */
@media (prefers-contrast: high) {
    :root {
        --primary-blue: #000080;
        --text-dark: #000000;
        --gray: #333333;
    }
}