/* Ícones */
@import url('https://cdn-uicons.flaticon.com/3.0.0/uicons-regular-straight/css/uicons-regular-straight.css');

* {
    font-family: "Inter";
}

body, html {
    margin: 0;
}

/* --- Variáveis Globais (Tema Claro) --- */
:root {
    --bg-main: #f8fafc; /* Cinza muito claro para o fundo geral */
    --bg-secondary: #ffffff; /* Branco puro para cartões e seções de destaque */
    --bg-tertiary: #f1f5f9; /* Cinza claro para rodapé e áreas de apoio */
    
    --text-primary: #1e293b; /* Cinza escuro (quase preto) para texto principal */
    --text-secondary: #475569; /* Cinza médio para parágrafos e textos de apoio */
    
    --primary-color: #2563eb; /* Azul vibrante (um pouco mais escuro que o tema dark para contraste) */
    --primary-hover: #1d4ed8;
    
    --accent-color: #059669; /* Verde esmeralda para botões secundários */
    --border-color: #e2e8f0; /* Cor sutil para bordas */
    
    --font-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
}

/* Header Principal */
header {
    background: linear-gradient(to right, var(--primary-hover), var(--primary-color));
    width: 100%;
    min-height: 80px;
    padding: 0 2rem;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    box-sizing: border-box;
    position: sticky;
    top: 0;
    z-index: 1000;
}

/* Área da Marca (Logo + Título) */
#site-brand {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 15px;
}

#site-brand h1 {
    color: var(--bg-secondary);
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
    letter-spacing: 0.5px;
}

#logo {
    height: 50px;
    width: auto;
}

/* Navegação (Menu) */
nav {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 2rem;
}

nav a {
    color: var(--bg-secondary);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
    transition: color 0.3s ease;
}

/* Efeitos de Interação */
nav a:hover {
    color: var(--bg-tertiary);
}

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

nav a:hover::after {
    width: 100%;
}

/* Responsividade */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        padding: 1rem;
        gap: 1rem;
    }
    
    nav {
        gap: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* --- Hero Section (Área de Destaque) --- */
.hero {
    text-align: center;
    padding: 6rem 2rem;
    /* Gradiente suave de azul claro para o cinza do fundo */
    background: linear-gradient(135deg, #e0f2fe 0%, var(--bg-main) 100%);
    border-bottom: 1px solid var(--border-color);
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

@media (max-width: 450px) {
    .hero h1 {
        font-size: 9vw;
    }
}

.highlight {
    color: var(--primary-color);
}

.hero p {
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto 2.5rem;
    color: var(--text-secondary);
}

/* Botões Genéricos */
.btn-primary, .btn-secondary {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    transition: all 0.3s;
    box-shadow: var(--shadow-sm);
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: var(--accent-color);
    color: #fff;
    margin-top: 1.5rem;
}

.btn-secondary:hover {
    background-color: #065f46; /* Verde esmeralda mais escuro para hover */
    transform: translateY(-2px);
}

/* --- Seções Genéricas --- */
section {
    padding: 5rem 5%;
    border-bottom: 1px solid var(--border-color);
}

/* Seção Intro (Fundo Branco para contraste com o Hero e as Trilhas) */
.intro {
    background-color: var(--bg-secondary);
}

section h2 {
    font-size: 2.25rem;
    margin-bottom: 2rem;
    text-align: center;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.intro p, .lab p {
    text-align: center;
    max-width: 768px;
    margin: 0 auto;
    font-size: 1.125rem;
    color: var(--text-secondary);
}

/* --- Grid de Trilhas (Fundo Cinza Claro) --- */
.trails {
    background-color: var(--bg-main);
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.card-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    border-color: var(--primary-color);
}

.card-highlight {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    transition: color 0.3s ease;
    display: flex;
    justify-content: center;
    align-items: center;
}

.card:hover .card-highlight {
    color: var(--primary-hover);
}

.card-title {
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0 0 0.5rem 0;
}

.card-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
    margin: 0 0 1.5rem 0;
    flex-grow: 1;
}

.card-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
}

.card-list li {
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.3rem 0.8rem;
    border-radius: 9999px;
    border: 1px solid var(--border-color);
    transition: background-color 0.2s ease, color 0.2s ease;
}

.card:hover .card-list li {
    background-color: #e0e7ff;
    color: var(--primary-color);
    border-color: #c7d2fe;
}