/* Importação da fonte oficial do sistema (Inter) */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* ==========================================
   LANDING PAGES DE INFOS DE E-BOOKS
   ========================================== */

body {
    background-color: var(--bg);
    color: var(--text);
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
}

.landing-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* Header Limpo */
.landing-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

/* Logo "One" na cor azul oficial */
.landing-header .brand-logo {
    font-size: 26px;
    font-weight: 800;
    color: var(--blue, #2563eb); /* Usa a cor azul do sistema */
    text-decoration: none;
    letter-spacing: -0.8px;
}

/* Hero / Banner Principal */
.hero-panel {
    padding: 32px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.05) 0%, rgba(255, 255, 255, 1) 100%);
}

.hero-panel .hero-content {
    max-width: 800px;
}

.hero-panel .badge-category {
    color: var(--blue, #2563eb);
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: block;
    margin-bottom: 8px;
}

.hero-panel .hero-title {
    font-size: 28px;
    line-height: 1.3;
    margin-bottom: 16px;
    color: var(--text);
    font-weight: 700;
    letter-spacing: -0.5px;
}

.hero-panel .hero-description {
    color: var(--text-muted);
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 28px;
}

.hero-panel .action-group {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-panel .btn-buy {
    padding: 14px 28px;
    font-size: 16px;
    text-decoration: none;
}

.hero-panel .price-original {
    color: var(--text-muted);
    font-size: 14px;
}

/* Grid de Conteúdo */
.grid-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 24px;
    margin-top: 24px;
}

.content-column {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.chapters-grid {
    padding: 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.chapter-card {
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
}

.chapter-card h4 {
    font-size: 14px;
    margin-bottom: 6px;
    font-weight: 600;
}

.chapter-card p {
    font-size: 13px;
    color: var(--text-muted);
    margin: 0;
    line-height: 1.5;
}

/* FAQ */
.faq-list {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item strong {
    font-size: 14px;
    color: var(--text);
    font-weight: 600;
}

.faq-item p {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
    line-height: 1.5;
}

.faq-divider {
    border: none;
    border-top: 1px solid var(--border);
}

/* Card Lateral do Autor */
.author-box {
    padding: 20px;
}

.author-profile {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
}

.author-avatar {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--border);
}

.author-box strong {
    font-size: 15px;
    display: block;
    margin-bottom: 2px;
    font-weight: 600;
}

.author-box .author-creci {
    font-size: 12px;
    color: var(--text-muted);
    display: block;
}

.author-contact-info {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 14px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
}

.author-contact-info .contact-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
}

.author-box p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.5;
    margin: 0;
}

/* Guarantee Card */
.guarantee-panel {
    border-left: 4px solid var(--blue, #2563eb);
}

.guarantee-box {
    padding: 20px;
}

.guarantee-box strong {
    font-size: 14px;
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
}

.guarantee-box p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.5;
    margin: 0;
}

/* Footer */
.landing-footer {
    text-align: center;
    margin-top: 48px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 13px;
}

/* Responsividade */
@media (max-width: 768px) {
    .grid-layout {
        grid-template-columns: 1fr;
    }
    
    .chapters-grid {
        grid-template-columns: 1fr;
    }
}