/* ARQUIVO: styles.css */

/* ---------------------------------- */
/* Design System: Variáveis e Cores */
/* ---------------------------------- */
:root {
    /* Cores (Light Mode Default) */
    --color-primary: #007bff; /* Azul Vibrante */
    --color-secondary-bg: #f4f7f9; /* Fundo Secundário Claro */
    --color-text: #1a202c;
    --color-text-secondary: #4a5568;
    --color-background: #ffffff;
    --color-card-bg: #ffffff;
    --color-border: #e2e8f0;
    --color-shadow: rgba(0, 0, 0, 0.1);

    /* Tipografia e Espaçamento */
    --font-family: 'Inter', sans-serif;
    --spacing-xs: 0.5rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 3rem;
    --border-radius: 12px;
}

/* Modo Escuro (Dark Mode Override) */
body[data-theme="dark"] {
    --color-primary: #6c8ef8; 
    --color-secondary-bg: #1e293b;
    --color-text: #e2e8f0;
    --color-text-secondary: #a0aec0;
    --color-background: #0f172a;
    --color-card-bg: #1a202c;
    --color-border: #2d3748;
    --color-shadow: rgba(0, 0, 0, 0.4);
}

/* ---------------------------------- */
/* Estilos Gerais e Utilitários */
/* ---------------------------------- */
* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
    transition: background-color 0.3s, color 0.3s;
}

/* Classes de Tamanho de Texto */
.text-xxl { font-size: 3.5rem; }
.text-xl { font-size: 2.5rem; }
.text-lg { font-size: 1.25rem; }
.text-sm { font-size: 0.875rem; }

.text-primary-color { color: var(--color-primary); }
.bg-secondary { background-color: var(--color-secondary-bg); }
.container { max-width: 1200px; margin: 0 auto; padding: 0 var(--spacing-md); }

/* ---------------------------------- */
/* Componentes */
/* ---------------------------------- */

/* Botões */
.btn-primary, .btn-cta {
    background-color: var(--color-primary);
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    text-decoration: none;
    cursor: pointer;
    font-weight: 600;
    transition: background-color 0.3s, transform 0.2s;
}

.btn-cta:hover, .btn-primary:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
}
.btn-lg { padding: 1rem 2rem; font-size: 1.1rem; }

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    background-color: var(--color-card-bg);
    position: sticky;
    top: 0;
    z-index: 100;
}
.logo { font-size: 1.5rem; font-weight: 900; color: var(--color-primary); }
.nav a { text-decoration: none; color: var(--color-text); margin-left: var(--spacing-md); padding: 0.5rem; }
.theme-toggle { background: none; border: none; cursor: pointer; color: var(--color-text); font-size: 1.25rem; margin-left: var(--spacing-md); }

/* Cartões (Cards) */
.card {
    background-color: var(--color-card-bg);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 15px var(--color-shadow);
    transition: transform 0.3s, box-shadow 0.3s;
    text-align: center;
}
.card:hover { transform: translateY(-5px); box-shadow: 0 8px 25px var(--color-shadow); }
.card h3 { color: var(--color-primary); margin-top: var(--spacing-md); }
.icon-lg { font-size: 3rem; color: var(--color-primary); }

/* ---------------------------------- */
/* Layout (Seções) */
/* ---------------------------------- */
section { padding: calc(3 * var(--spacing-lg)) 0; }
h2 { text-align: center; margin-bottom: calc(2 * var(--spacing-md)); }

/* Hero Section (Design Split) */
.hero {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    min-height: 80vh;
    text-align: left;
}
.hero-content { flex: 1; max-width: 600px; }
.hero-image { flex: 1; min-height: 300px; background-color: var(--color-secondary-bg); border-radius: var(--border-radius); } /* Placeholder */

/* Feature Grid */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: calc(2 * var(--spacing-md));
}

/* Resource Cards */
.resource-cards {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-top: calc(2 * var(--spacing-md));
}
.card-resource {
    flex: 0 1 45%;
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    text-align: left;
}
.card-resource i { margin-right: var(--spacing-xs); color: var(--color-primary); }

/* CTA Banner */
.cta-banner {
    background-color: var(--color-primary);
    color: white;
    text-align: center;
    padding: calc(2 * var(--spacing-lg)) 0;
    margin-top: calc(3 * var(--spacing-lg));
}
.cta-banner p { margin-bottom: var(--spacing-md); }

/* Footer */
.footer {
    padding: calc(2 * var(--spacing-md)) 0;
    background-color: var(--color-card-bg);
    border-top: 1px solid var(--color-border);
    color: var(--color-text-secondary);
}
.footer-content {
    display: flex;
    justify-content: space-between;
}
.footer-links a { display: block; color: var(--color-text-secondary); text-decoration: none; margin-top: var(--spacing-xs); }
.footer-links h4 { color: var(--color-text); margin-bottom: var(--spacing-md); }

/* ---------------------------------- */
/* Responsividade (Mobile First) */
/* ---------------------------------- */
@media (max-width: 992px) {
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .hero { flex-direction: column; text-align: center; }
    .hero-content { max-width: 100%; }
    .hero-image { order: -1; }
    .nav { display: none; } /* Em dispositivos menores, um menu hambúrguer seria implementado via JS */
    .header { padding: 1rem var(--spacing-md); }
    .text-xxl { font-size: 2.5rem; }
    .text-xl { font-size: 2rem; }
}

@media (max-width: 576px) {
    .feature-grid { grid-template-columns: 1fr; }
    .footer-content { flex-direction: column; gap: var(--spacing-lg); }
    .resource-cards { flex-direction: column; }
}