/* Importação de Fontes do Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@300;400;500;700&family=Fira+Code:wght@400;600&display=swap');

/* --- Variáveis CSS para Cores e Espaçamento --- */
:root {
    /* Cores */
    --color-primary: #001F3F; /* Azul Marinho Profundo */
    --color-secondary: #40E0D0; /* Turquesa */
    --color-text-dark: #333333; /* Cinza Escuro para texto */
    --color-text-light: #666666; /* Cinza Médio para texto secundário */
    --color-background-light: #FFFFFF; /* Branco Puro */
    --color-background-alt: #F8F8F8; /* Cinza Claro para seções alternadas */
    --color-border: #E0E0E0; /* Cinza para bordas suaves */
    --color-dark-footer: #1A1A1A; /* Fundo do rodapé */
    --color-social-icon-bg: #444444; /* Fundo dos ícones sociais */

    /* Fontes */
    --font-heading: 'Manrope', sans-serif;
    --font-body: 'Manrope', sans-serif;
    --font-code: 'Fira Code', monospace;

    /* Espaçamento (Base de 8px) */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 80px;
    --spacing-xxl: 120px;
}

/* --- Estilos Globais e Reset Básico --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--color-text-dark);
    background-color: var(--color-background-light);
    -webkit-font-smoothing: antialiased;
    scroll-behavior: smooth;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--color-secondary);
    text-decoration: underline;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-text-dark);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

h1 { font-size: 3em; }
h2 { font-size: 2.2em; }
h3 { font-size: 1.8em; }
h4 { font-size: 1.4em; }

p {
    margin-bottom: var(--spacing-sm);
}

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

/* --- Header e Navegação --- */
header {
    background-color: var(--color-background-light);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 2px 5px rgba(0,0,0,0.05); /* Sombra suave para o cabeçalho */
}

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

.logo h1 {
    margin: 0;
    font-size: 1.8em;
    font-weight: 700;
}

.logo a {
    color: var(--color-primary);
}

.nav-links {
    list-style: none;
    display: flex;
}

.nav-links li {
    margin-left: var(--spacing-md);
}

.nav-links a {
    color: var(--color-text-dark);
    font-weight: 500;
    padding: 5px 0;
    position: relative;
}

.nav-links a:hover {
    color: var(--color-primary);
    text-decoration: none;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--color-secondary);
    transition: width 0.3s ease;
}

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

/* --- Botões --- */
.btn-primary, .btn-secondary, .btn-secondary-small {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 5px;
    font-weight: 500;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    white-space: nowrap; /* Evita que o texto quebre */
}

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

.btn-primary:hover {
    background-color: var(--color-secondary);
    color: var(--color-primary);
    text-decoration: none;
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}

.btn-secondary:hover {
    background-color: var(--color-primary);
    color: var(--color-background-light);
    text-decoration: none;
}

.btn-secondary-small {
    background-color: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
    padding: var(--spacing-xs) var(--spacing-sm); /* Menor padding */
    font-size: 0.9em; /* Fonte menor */
}

.btn-secondary-small:hover {
    background-color: var(--color-primary);
    color: var(--color-background-light);
    text-decoration: none;
}


/* --- Seções Principais --- */
section {
    padding: var(--spacing-xl) 0;
}

section:nth-child(even) { /* Para dar um leve contraste em seções alternadas */
    background-color: var(--color-background-alt);
}

.section-description {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-lg) auto;
    font-size: 1.1em;
    color: var(--color-text-light);
}

/* --- Seção Hero --- */
#hero {
    background-color: var(--color-primary);
    color: var(--color-background-light);
    text-align: center;
    padding: var(--spacing-xxl) 0;
}

#hero h2 {
    color: var(--color-background-light);
    font-size: 3.5em;
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

#hero p {
    font-size: 1.3em;
    margin-bottom: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* --- Seção de Trilhas de Conhecimento --- */
#knowledge-tracks {
    text-align: center;
}

#knowledge-tracks h3 {
    margin-bottom: var(--spacing-sm);
}

.tracks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.track-item {
    background-color: var(--color-background-light);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: var(--spacing-md);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
    text-align: left; /* Alinha o texto dentro do cartão à esquerda */
    display: flex;
    flex-direction: column;
    justify-content: space-between; /* Empurra o botão para baixo */
}

.track-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
}

.track-item h4 {
    font-size: 1.3em;
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs); /* Espaço entre o ícone e o texto */
}

.track-item h4 i { /* Estilo para os ícones dentro dos títulos */
    color: var(--color-secondary);
    font-size: 1.2em;
}

.track-item p {
    font-size: 0.95em;
    color: var(--color-text-light);
    flex-grow: 1; /* Faz o parágrafo ocupar o espaço restante */
    margin-bottom: var(--spacing-md); /* Espaçamento antes do botão */
}

.current-focus {
    background-color: var(--color-primary);
    color: var(--color-background-light);
    padding: var(--spacing-md);
    border-radius: 8px;
    margin-top: var(--spacing-lg);
    text-align: center;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.current-focus h4 {
    color: var(--color-secondary); /* Cor de destaque no título do foco */
    margin-bottom: var(--spacing-xs);
    font-size: 1.6em;
}

.current-focus p {
    font-size: 1.1em;
    color: var(--color-background-light);
    margin-bottom: 0;
}


/* --- Listas de Posts (Cartões) --- */
.post-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.post-item {
    background-color: var(--color-background-light);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: var(--spacing-md);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

.post-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
}

.post-item h4 {
    margin-bottom: var(--spacing-xs);
}

.post-item h4 a {
    color: var(--color-text-dark); /* Cor do título do post */
}

.post-item h4 a:hover {
    color: var(--color-primary); /* Cor do título do post no hover */
}

.post-meta {
    font-size: 0.85em;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

/* --- Call to Action --- */
#call-to-action {
    text-align: center;
    padding: var(--spacing-xl) 0;
    background-color: var(--color-secondary);
    color: var(--color-primary);
}

#call-to-action h3 {
    color: var(--color-primary);
    font-size: 2.5em;
    margin-bottom: var(--spacing-sm);
}

#call-to-action p {
    font-size: 1.2em;
    margin-bottom: var(--spacing-lg);
}

/* --- Footer --- */
footer {
    background-color: var(--color-dark-footer);
    color: var(--color-background-light);
    padding: var(--spacing-lg) 0;
    font-size: 0.9em;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap; /* Permite que as seções do rodapé quebrem linha */
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1); /* Linha divisória suave */
}

.footer-section {
    flex: 1; /* Faz as seções ocuparem espaço igualmente */
    min-width: 200px; /* Garante que não fiquem muito pequenas */
}

.footer-section h4 {
    color: var(--color-secondary); /* Títulos das seções do rodapé */
    margin-bottom: var(--spacing-sm);
    font-size: 1.1em;
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

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

.footer-section a {
    color: var(--color-background-light);
    transition: color 0.3s ease;
}

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

.social-icons {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm); /* Espaçamento em relação ao título "Siga-nos" */
}

.social-icons a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--color-social-icon-bg); /* Fundo dos ícones */
    border-radius: 50%;
    transition: background-color 0.3s ease, transform 0.2s ease;
    color: var(--color-background-light); /* Cor do ícone em si */
    font-size: 1.2em; /* Tamanho do ícone Font Awesome */
}

.social-icons a:hover {
    background-color: var(--color-secondary);
    transform: translateY(-3px);
    color: var(--color-dark-footer); /* Cor do ícone no hover */
}

.footer-bottom {
    text-align: center;
    margin-top: var(--spacing-md);
}

.footer-bottom p {
    margin-bottom: 0;
    color: var(--color-text-light); /* Texto mais suave no copyright */
}

.footer-bottom a {
    color: var(--color-secondary);
    text-decoration: underline;
}

.footer-bottom a:hover {
    color: var(--color-background-light);
}

/* --- Estilos para blocos de código (se for usar) --- */
code, pre {
    font-family: var(--font-code);
    background-color: var(--color-background-alt);
    padding: 2px 4px;
    border-radius: 4px;
    font-size: 0.9em;
}

pre {
    padding: var(--spacing-sm);
    overflow-x: auto;
    border: 1px solid var(--color-border);
    margin-bottom: var(--spacing-md);
    line-height: 1.4;
}

/* --- Responsividade --- */
@media (max-width: 992px) {
    h1 { font-size: 2.5em; }
    h2 { font-size: 2em; }
    #hero h2 { font-size: 3em; }

    .tracks-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    h1 { font-size: 2em; }
    h2 { font-size: 1.8em; }
    h3 { font-size: 1.5em; }
    #hero h2 { font-size: 2.5em; }
    #hero p { font-size: 1.1em; }
    
    nav {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }

    .nav-links {
        margin-top: var(--spacing-md);
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-sm); /* Espaçamento entre os links do menu */
    }

    .nav-links li {
        margin-left: 0;
    }
    
    .tracks-grid {
        grid-template-columns: 1fr; /* Uma coluna em telas menores */
    }

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

    .footer-section {
        min-width: unset; /* Remove largura mínima para seções */
        margin-bottom: var(--spacing-md); /* Espaçamento entre as seções */
    }
    .footer-section ul {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    .social-icons {
        justify-content: center; /* Centraliza ícones sociais */
    }
}

@media (max-width: 480px) {
    h1 { font-size: 1.8em; }
    h2 { font-size: 1.5em; }
    #hero h2 { font-size: 2em; }
    .btn-primary, .btn-secondary, .btn-secondary-small {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.9em;
    }
    .container {
        padding: 0 var(--spacing-xs);
    }

    .post-list {
        grid-template-columns: 1fr;
    }
}