/* Reset and Base Styles */
*, *::before, *::after {
    box-sizing: border-box
}

* {
    margin: 0;
    padding: 0
}

html {
    scroll-behavior: smooth
}

body {
    font-family: 'Inter',-apple-system,BlinkMacSystemFont,sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background: var(--white);
    overflow-x: hidden
}

/* CSS Variables */
:root {
    --primary: #0B63A5;
    --secondary: #00A99D;
    --accent: #FFB040;
    --neutral: #F5F7FA;
    --dark: #1a1a1a;
    --gray: #6b7280;
    --white: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --border-radius: 8px;
    --transition: all 0.3s ease
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary);
    color: var(--white);
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 9999
}

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

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

/* Header */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0,0,0,0.1);
    transition: var(--transition)
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary)
}

.nav-menu {
    display: flex;
    gap: 2rem
}

    .nav-menu a {
        text-decoration: none;
        color: var(--dark);
        font-weight: 500;
        transition: var(--transition)
    }

        .nav-menu a:hover {
            color: var(--primary)
        }

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem
}

.language-switcher {
    display: flex;
    gap: 0.25rem;
    background: var(--neutral);
    border-radius: var(--border-radius);
    padding: 0.25rem
}

.lang-btn {
    background: none;
    border: none;
    padding: 0.5rem 0.75rem;
    border-radius: calc(var(--border-radius) - 2px);
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition)
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 16px 32px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 16px;
    text-align: center
}

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

    .btn-primary:hover {
        background: #094d85;
        transform: translateY(-2px);
        box-shadow: var(--shadow-lg)
    }

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

    .btn-secondary:hover {
        background: #008a7f;
        transform: translateY(-2px)
    }

.btn-large {
    padding: 20px 40px;
    font-size: 18px
}

.btn-full {
    width: 100%
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg,var(--neutral) 0%,rgba(11,99,165,0.05) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center
}

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

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray);
    margin-bottom: 2rem;
    line-height: 1.6
}

.hero-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem
}

.feature {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem
}

.hero-guarantee {
    color: var(--gray);
    font-size: 0.9rem
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg)
}

/* Sections */
section {
    padding: 80px 0
}

.section-header {
    text-align: center;
    margin-bottom: 4rem
}

    .section-header h2 {
        font-size: 2.5rem;
        font-weight: 700;
        margin-bottom: 1rem;
        color: var(--dark)
    }

    .section-header p {
        font-size: 1.25rem;
        color: var(--gray)
    }

/* Problem Section */
.problem-section {
    background: var(--neutral)
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(300px,1fr));
    gap: 2rem;
    margin-bottom: 3rem
}

.problem-item {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center
}

.problem-icon {
    margin-bottom: 1.5rem
}

.problem-item h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--dark)
}

.security-highlight {
    background: linear-gradient(135deg,var(--accent),#ff9500);
    padding: 2rem;
    border-radius: var(--border-radius);
    color: var(--white);
    text-align: center
}

    .security-highlight h3 {
        margin-bottom: 1rem;
        font-size: 1.5rem
    }

/* Solution Section */
.solution-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start
}

.benefits-list {
    list-style: none;
    margin-top: 1rem
}

    .benefits-list li {
        display: flex;
        align-items: flex-start;
        gap: 0.75rem;
        margin-bottom: 1rem;
        padding: 0.5rem 0
    }

.demo-section {
    background: var(--neutral);
    padding: 2rem;
    border-radius: var(--border-radius)
}

.code-demo summary {
    cursor: pointer;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--primary)
}

.code-demo pre {
    background: var(--dark);
    color: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    overflow-x: auto;
    font-size: 0.9rem;
    line-height: 1.4
}

/* Social Proof */
.social-proof-section {
    background: var(--neutral)
}

.social-proof-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center
}

.author-info {
    display: flex;
    gap: 1.5rem;
    align-items: center
}

.author-avatar img {
    border-radius: 50%;
    width: 80px;
    height: 80px;
    object-fit: cover
}

.author-stats {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--gray)
}

.testimonials {
    display: flex;
    flex-direction: column;
    gap: 2rem
}

.testimonial {
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow)
}

    .testimonial cite {
        font-style: normal;
        color: var(--gray);
        font-size: 0.9rem
    }

/* Content Section */
.chapters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(350px,1fr));
    gap: 2rem;
    margin-bottom: 3rem
}

.chapter-item {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border-left: 4px solid var(--primary)
}

.chapter-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 1rem
}

.chapter-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem
}

.chapter-item ul {
    list-style: none;
    margin-top: 1rem
}

.chapter-item li {
    padding: 0.25rem 0;
    color: var(--gray)
}

    .chapter-item li::before {
        content: "•";
        color: var(--secondary);
        margin-right: 0.5rem
    }

.security-checklist {
    background: linear-gradient(135deg,var(--secondary),#00968a);
    padding: 2rem;
    border-radius: var(--border-radius);
    color: var(--white);
    text-align: center
}

.checklist-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(250px,1fr));
    gap: 1rem;
    margin-top: 1.5rem
}

.checklist-item {
    background: rgba(255,255,255,0.1);
    padding: 1rem;
    border-radius: var(--border-radius);
    font-weight: 500
}

/* Pricing Section */
.pricing-section {
    background: var(--neutral)
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(300px,1fr));
    gap: 2rem;
    margin-bottom: 3rem
}

.pricing-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    position: relative;
    text-align: center
}

    .pricing-card.featured {
        border: 2px solid var(--primary);
        transform: scale(1.05)
    }

.pricing-badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 0.9rem
}

.pricing-header {
    margin-bottom: 2rem
}

    .pricing-header h3 {
        font-size: 1.5rem;
        font-weight: 600;
        margin-bottom: 1rem
    }

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem
}

.currency {
    font-size: 1.5rem;
    color: var(--gray)
}

.amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary)
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
    text-align: left
}

    .pricing-features li {
        padding: 0.75rem 0;
        border-bottom: 1px solid var(--neutral)
    }

.guarantee-section {
    text-align: center
}

.guarantee-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow)
}

/* FAQ Section */
.faq-list {
    max-width: 800px;
    margin: 0 auto
}

.faq-item {
    border-bottom: 1px solid var(--neutral);
    margin-bottom: 1rem
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: 1.5rem 0;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--dark)
}

    .faq-question svg {
        transition: var(--transition)
    }

    .faq-question[aria-expanded="true"] svg {
        transform: rotate(180deg)
    }

/*.faq-answer {
    padding: 0 0 1.5rem 0;
    color: var(--gray);
    line-height: 1.6;
    display: none
}

    .faq-answer.open {
        display: block
    }*/

/* Newsletter Section */
.newsletter-section {
    background: var(--primary);
    color: var(--white);
    text-align: center
}

.newsletter-content h2 {
    margin-bottom: 1rem
}

.newsletter-form {
    max-width: 600px;
    margin: 2rem auto 0
}

.form-group {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem
}

    .form-group input {
        flex: 1;
        padding: 1rem;
        border: none;
        border-radius: var(--border-radius);
        font-size: 1rem
    }

.form-consent {
    font-size: 0.9rem;
    text-align: left
}

    .form-consent label {
        display: flex;
        align-items: flex-start;
        gap: 0.5rem;
        cursor: pointer
    }

/* Footer */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: 3rem 0 1rem
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.25rem;
    margin-bottom: 1rem
}

.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--accent)
}

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

.footer-section li {
    margin-bottom: 0.5rem
}

.footer-section a {
    color: var(--white);
    text-decoration: none;
    transition: var(--transition)
}

    .footer-section a:hover {
        color: var(--accent)
    }

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

    .social-links a {
        color: var(--white);
        transition: var(--transition)
    }

        .social-links a:hover {
            color: var(--accent)
        }

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 1rem;
    text-align: center;
    color: var(--gray);
    font-size: 0.9rem
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease
}

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

/* Responsive Design */
@media (max-width:768px) {
    .container {
        padding: 0 1rem
    }

    .nav-wrapper {
        flex-direction: column;
        gap: 1rem
    }

    .nav-menu {
        display: none
    }

    .hero {
        padding: 100px 0 60px
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center
    }

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

    .hero-cta {
        flex-direction: column
    }

    .solution-content {
        grid-template-columns: 1fr
    }

    .social-proof-content {
        grid-template-columns: 1fr
    }

    .author-info {
        flex-direction: column;
        text-align: center
    }

    .chapters-grid {
        grid-template-columns: 1fr
    }

    .pricing-grid {
        grid-template-columns: 1fr
    }

    .pricing-card.featured {
        transform: none
    }

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

    .form-group {
        flex-direction: column
    }

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

    section {
        padding: 60px 0
    }

    .section-header h2 {
        font-size: 2rem
    }
}

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

    .hero-subtitle {
        font-size: 1.1rem
    }

    .btn {
        padding: 12px 24px;
        font-size: 14px
    }

    .btn-large {
        padding: 16px 32px;
        font-size: 16px
    }

    .section-header h2 {
        font-size: 1.75rem
    }

    .problem-grid {
        grid-template-columns: 1fr
    }

    .chapters-grid {
        grid-template-columns: 1fr
    }

    .checklist-grid {
        grid-template-columns: 1fr
    }
}

.chapters-grid ul li::before {
    content: '\2713'; /* Código CSS para um ícone de "check" ✓. A barra dupla escapa corretamente. */
    color: var(--secondary);
    font-size: 1rem;
    position: absolute;
    left: 0;
    font-weight: 700;
}


/* 1. Animação e Estilo do FAQ */
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, padding 0.3s ease-out;
    padding: 0 1.5rem; /* Garante que não haja padding vertical quando fechado */
    color: var(--gray);
    line-height: 1.6;
}

.faq-question[aria-expanded="true"] + .faq-answer {
    padding: 1.5rem; /* Restaura o padding quando aberto */
    border-top: 1px solid #e5e7eb;
}

.faq-question svg {
    transition: transform 0.3s ease-out;
}

/* 2. Seção do Autor Mais Elegante */
.author-section {
    background-color: var(--neutral);
    padding: 80px 0;
}

.author-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.author-photo {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    object-fit: cover;
    border: 6px solid var(--white);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    margin-bottom: 1.5rem;
}

.author-bio h3 {
    color: var(--primary);
    margin-top: 0;
}

.author-bio p {
    font-size: 1.1rem;
    color: var(--gray);
}

.author-bio p {
    text-align: justify;
}

/* --- ESTILOS PARA OS LINKS DA BIO DO AUTOR --- */

.author-links {
    margin-top: 2rem;
    display: flex;
    justify-content: center; /* Centraliza os links */
    gap: 1.5rem; /* Espaçamento entre os links */
    align-items: center;
    flex-wrap: wrap; /* Permite que os links quebrem a linha em telas pequenas */
}

    .author-links a {
        display: flex;
        align-items: center;
        gap: 0.5rem; /* Espaçamento entre o ícone e o texto */
        color: var(--gray);
        text-decoration: none;
        font-weight: 600;
        transition: var(--transition);
        padding: 8px 12px;
        border-radius: var(--border-radius);
    }

        .author-links a:hover {
            color: var(--primary);
            background-color: var(--neutral); /* Fundo sutil ao passar o mouse */
            transform: translateY(-2px);
        }

    .author-links svg {
        width: 24px;
        height: 24px;
    }

.key-takeaways ul {
    list-style: none; /* Remove o marcador padrão da lista */
    padding-left: 0; /* Remove o preenchimento padrão que o marcador ocupa */
}