/* Estilos Gerais */
:root {
    --primary-color: #2563eb;
    --secondary-color: #10b981;
    --accent-color: #7c3aed;
    --light-gray: #f3f4f6;
    --dark-gray: #374151;
    --text-color: #1e293b;
    --white: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --radius: 8px;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #f9fafb;
}

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

a:hover {
    color: #1d4ed8;
}

/* Header */
header {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    padding: 2rem 1rem;
    text-align: center;
}

header h1 {
    font-size: 2.2rem;
    margin-bottom: 0.5rem;
}

header p {
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto;
    opacity: 0.9;
}

/* Navegação */
nav {
    background-color: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

nav ul {
    display: flex;
    justify-content: center;
    list-style: none;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

nav li {
    padding: 1rem 0;
}

nav a {
    padding: 1rem;
    color: var(--dark-gray);
    font-weight: 500;
    position: relative;
}

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

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

nav a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 1rem;
    right: 1rem;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 3px 3px 0 0;
}

/* Layout Principal */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

section {
    margin-bottom: 3rem;
    display: none;
}

section.active-section {
    display: block;
}

/* Seção Hero */
.hero {
    text-align: center;
    padding: 3rem 1rem;
    margin-bottom: 2rem;
    background-color: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.hero h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.hero p {
    max-width: 800px;
    margin: 0 auto 2rem;
    font-size: 1.1rem;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.cta-button {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--primary-color);
    color: white;
    border-radius: var(--radius);
    font-weight: 500;
    transition: var(--transition);
}

.cta-button:hover {
    background-color: #1d4ed8;
    color: white;
    transform: translateY(-2px);
}

/* Botões específicos por seção */
.ethical-cta .cta-button {
    background-color: var(--accent-color);
}

.ethical-cta .cta-button:hover {
    background-color: #6d28d9;
}

.resources-cta .cta-button {
    background-color: var(--secondary-color);
}

.resources-cta .cta-button:hover {
    background-color: #059669;
}

/* Cards na Página Inicial */
.overview h3 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 1.5rem;
}

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

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

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.card .icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.card h4 {
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
    color: var(--dark-gray);
}

/* Seções Comuns */
section h2 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.intro-text {
    font-size: 1.1rem;
    max-width: 800px;
    margin-bottom: 2rem;
}

/* Áreas da Computação */
.areas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.area-item {
    background-color: var(--white);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.area-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.area-item h3 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-size: 1.3rem;
}

.area-item p {
    margin-bottom: 1rem;
}

.more-info {
    display: inline-block;
    font-weight: 500;
}

/* Seção Financeira */
.filter-container {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.filter-container select {
    padding: 0.5rem;
    border-radius: var(--radius);
    border: 1px solid #d1d5db;
    background-color: var(--white);
    font-family: inherit;
}

.financial-tables {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

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

.financial-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
    border-bottom: 1px solid #e5e7eb;
    padding-bottom: 0.5rem;
}

.financial-card h4 {
    margin: 1.5rem 0 0.5rem;
    color: var(--dark-gray);
    font-size: 1.1rem;
}

.financial-card ul {
    list-style: none;
}

.financial-card li {
    padding: 0.5rem 0;
    border-bottom: 1px solid #f3f4f6;
}

.financial-card li:last-child {
    border-bottom: none;
}

/* Seção Tendências */
.trends-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

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

.trend-section h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
    border-bottom: 1px solid #e5e7eb;
    padding-bottom: 0.5rem;
}

.trend-list li {
    margin-bottom: 0.75rem;
    border-bottom: 1px solid #f3f4f6;
    padding-bottom: 0.75rem;
}

.trend-list li:last-child {
    margin-bottom: 0;
    border-bottom: none;
    padding-bottom: 0;
}

/* Seção de Recursos e Ética */
.ethical-content, .resources-container {
    background-color: var(--white);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.ethical-content ul, .resources-container ul {
    list-style: disc;
    margin-left: 1.5rem;
    margin-bottom: 1.5rem;
}

.ethical-content li, .resources-container li {
    margin-bottom: 0.5rem;
}

.ethical-cta, .resources-cta {
    margin-top: 1.5rem;
}

/* Rodapé */
footer {
    background-color: var(--dark-gray);
    color: var(--white);
    text-align: center;
    padding: 2rem 1rem;
    margin-top: 3rem;
}

footer a {
    color: #d1d5db;
}

footer a:hover {
    color: var(--white);
}

/* Responsividade */
@media (max-width: 768px) {
    nav ul {
        flex-wrap: wrap;
    }
    
    nav li {
        flex: 1 1 33.333%;
        text-align: center;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-button {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    nav li {
        flex: 1 1 50%;
    }
    
    .hero h2 {
        font-size: 1.8rem;
    }
    
    section h2 {
        font-size: 1.6rem;
    }
}