/* ============================================
   RESET E VARIÁVEIS GLOBAIS
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Cores Principais */
    --color-primary: #003366;
    --color-primary-light: #004d99;
    --color-secondary: #006633;
    
    /* Cores Neutras */
    --color-dark: #001a33;
    --color-gray: #4a5568;
    --color-light-gray: #e8eef5;
    --color-white: #f9fafb;
    
    /* Cores de Destaque */
    --color-warning: #d97706;
    --color-success: #059669;
    --color-info: #0284c7;
    
    /* Espaçamento */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Tipografia */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-dark);
    background-color: var(--color-white);
}

/* ============================================
   CONTAINER E LAYOUT
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ============================================
   HEADER E NAVEGAÇÃO
   ============================================ */
.header {
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-light-gray);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
}

.logo img {
    display: block;
    max-width: 100%;
    height: auto;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-list a {
    color: var(--color-dark);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    font-size: 0.95rem;
}

.nav-list a:hover {
    color: var(--color-secondary);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-sm);
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--color-dark);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    padding: var(--spacing-2xl) 0;
    text-align: center;
}

.hero-content h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    font-weight: 800;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto;
    opacity: 0.95;
    line-height: 1.5;
}

/* ============================================
   SEÇÕES PRINCIPAIS
   ============================================ */
.section {
    padding: var(--spacing-2xl) 0;
    border-bottom: 1px solid var(--color-light-gray);
}

.section h2 {
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    font-weight: 800;
}

.section-intro {
    font-size: 1.1rem;
    color: var(--color-primary-light);
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
}

/* ============================================
   GRIDS DE CONTEÚDO
   ============================================ */
.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-xl);
    margin: var(--spacing-xl) 0;
}

.content-block {
    padding: var(--spacing-lg);
    background-color: #f5f8fc;
    border-radius: 8px;
    border-left: 4px solid var(--color-secondary);
}

.content-block h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    font-size: 1.3rem;
}

.content-block p {
    margin-bottom: var(--spacing-md);
    color: var(--color-gray);
}

.content-block ul {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.content-block li {
    margin-bottom: var(--spacing-sm);
    color: var(--color-gray);
}

/* ============================================
   CAIXAS ESPECIAIS
   ============================================ */
.highlight-box {
    background-color: #fff3cd;
    border-left: 4px solid var(--color-warning);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
    border-radius: 4px;
    color: var(--color-dark);
}

.formula-box {
    background-color: #f0f4f8;
    border: 1px solid var(--color-primary-light);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    color: var(--color-dark);
}

.formula-box strong {
    display: block;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

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

/* ============================================
   TABELAS
   ============================================ */
.indicators-table,
.styled-table,
.regimes-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-lg) 0;
    box-shadow: var(--shadow-sm);
    border-radius: 4px;
    overflow: hidden;
}

.indicators-table thead,
.styled-table thead,
.regimes-table thead {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.indicators-table th,
.styled-table th,
.regimes-table th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
}

.indicators-table td,
.styled-table td,
.regimes-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-light-gray);
}

.indicators-table tbody tr:hover,
.styled-table tbody tr:hover,
.regimes-table tbody tr:hover {
    background-color: #f9f9f9;
}

.indicators-section {
    margin: var(--spacing-xl) 0;
}

.indicators-section h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
    font-size: 1.3rem;
}

.comparison-table {
    margin: var(--spacing-xl) 0;
}

.comparison-table h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
    font-size: 1.3rem;
}

/* ============================================
   FAQ
   ============================================ */
.faq-section {
    background-color: #f5f8fc;
    padding: var(--spacing-2xl) 0;
}

.faq-section h2 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--color-light-gray);
    border-radius: 4px;
    overflow: hidden;
    background-color: var(--color-white);
}

.faq-question {
    width: 100%;
    padding: var(--spacing-md);
    background-color: var(--color-primary);
    color: var(--color-white);
    border: none;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    transition: background-color 0.3s ease;
}

.faq-question:hover {
    background-color: var(--color-primary-light);
}

.faq-question::after {
    content: '▼';
    float: right;
    transition: transform 0.3s ease;
}

.faq-question.active::after {
    transform: rotate(180deg);
}

.faq-answer {
    padding: var(--spacing-md);
    color: var(--color-gray);
    display: none;
    background-color: var(--color-white);
}

.faq-answer.active {
    display: block;
}

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

.faq-answer ul {
    margin-left: var(--spacing-lg);
    margin-top: var(--spacing-sm);
}

.faq-answer li {
    margin-bottom: var(--spacing-sm);
}

/* ============================================
   SEÇÃO INSTITUCIONAL
   ============================================ */
.institutional-info {
    background-color: #f5f8fc;
    padding: var(--spacing-lg);
    border-radius: 8px;
    margin: var(--spacing-xl) 0;
}

.institutional-info h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.info-item {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: 4px;
    border-left: 4px solid var(--color-secondary);
}

.info-item strong {
    color: var(--color-primary);
    display: block;
    margin-bottom: var(--spacing-sm);
}

.info-item p {
    color: var(--color-gray);
    font-size: 0.95rem;
}

.institutional-content {
    background-color: #f5f8fc;
    padding: var(--spacing-lg);
    border-radius: 8px;
    margin: var(--spacing-xl) 0;
}

.institutional-content h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.institutional-content ul {
    margin-left: var(--spacing-lg);
}

.institutional-content li {
    margin-bottom: var(--spacing-sm);
    color: var(--color-gray);
}

/* ============================================
   CONTATO
   ============================================ */
.contact-section {
    margin: var(--spacing-xl) 0;
}

.contact-details {
    background-color: #f5f8fc;
    padding: var(--spacing-lg);
    border-radius: 8px;
    margin: var(--spacing-lg) 0;
}

.contact-details h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.contact-item {
    margin-bottom: var(--spacing-md);
}

.contact-item strong {
    color: var(--color-primary);
    display: block;
    margin-bottom: var(--spacing-sm);
}

.contact-item p {
    color: var(--color-gray);
}

.contact-form-info {
    background-color: #e8f4f8;
    padding: var(--spacing-md);
    border-left: 4px solid var(--color-info);
    border-radius: 4px;
    margin-top: var(--spacing-lg);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
}

.footer-description {
    font-size: 0.9rem;
    opacity: 0.8;
    line-height: 1.5;
    margin-top: var(--spacing-md);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--color-white);
    text-decoration: none;
    font-size: 0.9rem;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-links a:hover {
    opacity: 1;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
}

.footer-legal {
    font-size: 0.8rem;
    opacity: 0.5;
    text-align: center;
    line-height: 1.6;
}

/* ============================================
   RESPONSIVIDADE
   ============================================ */
@media (max-width: 968px) {
    .nav-list {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background-color: var(--color-white);
        gap: 0;
        box-shadow: var(--shadow-lg);
        padding: var(--spacing-lg);
    }

    .nav-list.active {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .section h2 {
        font-size: 1.5rem;
    }

    .content-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .hero-content h1 {
        font-size: 1.75rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section {
        padding: var(--spacing-xl) 0;
    }

    .section h2 {
        font-size: 1.3rem;
    }

    .section-intro {
        font-size: 1rem;
    }

    .indicators-table,
    .styled-table,
    .regimes-table {
        font-size: 0.9rem;
    }

    .indicators-table th,
    .styled-table th,
    .regimes-table th,
    .indicators-table td,
    .styled-table td,
    .regimes-table td {
        padding: var(--spacing-sm);
    }

    .info-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .header-content {
        padding: var(--spacing-sm) 0;
    }

    .logo img {
        width: 200px;
        height: auto;
    }

    .hero-content h1 {
        font-size: 1.5rem;
    }

    .hero-subtitle {
        font-size: 0.95rem;
    }

    .section {
        padding: var(--spacing-lg) 0;
    }

    .section h2 {
        font-size: 1.2rem;
    }

    .content-block {
        padding: var(--spacing-md);
    }

    .faq-question {
        font-size: 0.95rem;
        padding: var(--spacing-sm);
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    .header,
    .footer,
    .nav-toggle {
        display: none;
    }

    body {
        font-size: 12px;
    }

    .section {
        page-break-inside: avoid;
    }
}