/* Reset e Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --azul-escuro: #0a1628;
    --azul-medio: #1a2f4a;
    --azul-claro: #2a4a6e;
    --preto: #000000;
    --branco: #ffffff;
    --texto-claro: #e8f4f8;
    --texto-medio: #b8d4e8;
    --destaque: #4a9eff;
    --destaque-hover: #6bb0ff;
    --sucesso: #4caf50;
    --erro: #f44336;
    --transicao: all 0.3s ease;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--preto) 0%, var(--azul-escuro) 50%, var(--azul-medio) 100%);
    color: var(--texto-claro);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: rgba(10, 22, 40, 0.95);
    padding: 2rem 0;
    text-align: center;
    border-bottom: 2px solid var(--azul-claro);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.logo {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--destaque);
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 10px rgba(74, 158, 255, 0.3);
}

.subtitle {
    font-size: 1.1rem;
    color: var(--texto-medio);
}

/* Hero Section */
.hero {
    padding: 3rem 0;
    text-align: center;
    background: linear-gradient(180deg, rgba(10, 22, 40, 0.8) 0%, transparent 100%);
}

.hero-title {
    font-size: 2.2rem;
    margin-bottom: 1rem;
    color: var(--texto-claro);
}

.hero-description {
    font-size: 1.2rem;
    color: var(--texto-medio);
    max-width: 800px;
    margin: 0 auto;
}

/* Navigation Tabs */
.nav-tabs {
    background: rgba(10, 22, 40, 0.9);
    padding: 1rem 0;
    border-bottom: 1px solid var(--azul-claro);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.nav-tabs .container {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.nav-tab {
    background: transparent;
    border: 2px solid var(--azul-claro);
    color: var(--texto-claro);
    padding: 0.8rem 2rem;
    font-size: 1rem;
    cursor: pointer;
    border-radius: 8px;
    transition: var(--transicao);
    font-weight: 500;
}

.nav-tab:hover {
    background: var(--azul-claro);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(74, 158, 255, 0.3);
}

.nav-tab.active {
    background: var(--destaque);
    border-color: var(--destaque);
    color: var(--branco);
}

/* Main Content */
.main-content {
    padding: 3rem 0;
    min-height: 60vh;
}

.content-section {
    display: none;
    animation: fadeIn 0.5s ease;
}

.content-section.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-title {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--destaque);
    text-align: center;
    border-bottom: 2px solid var(--azul-claro);
    padding-bottom: 1rem;
}

/* Temas Grid */
.temas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.tema-card {
    background: rgba(26, 47, 74, 0.6);
    border: 2px solid var(--azul-claro);
    border-radius: 12px;
    padding: 1.5rem;
    transition: var(--transicao);
    cursor: pointer;
    backdrop-filter: blur(10px);
}

.tema-card:hover {
    transform: translateY(-5px);
    border-color: var(--destaque);
    box-shadow: 0 8px 25px rgba(74, 158, 255, 0.4);
    background: rgba(26, 47, 74, 0.8);
}

.tema-card h3 {
    color: var(--destaque);
    margin-bottom: 0.8rem;
    font-size: 1.3rem;
}

.tema-card p {
    color: var(--texto-medio);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.tema-card .tema-badge {
    display: inline-block;
    background: var(--azul-claro);
    color: var(--texto-claro);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    margin-top: 0.5rem;
}

/* Questões */
.questoes-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.filtro-select {
    background: rgba(26, 47, 74, 0.8);
    border: 2px solid var(--azul-claro);
    color: var(--texto-claro);
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transicao);
}

.filtro-select:hover {
    border-color: var(--destaque);
}

.questoes-stats {
    display: flex;
    gap: 1.5rem;
    color: var(--texto-medio);
    font-weight: 500;
}

.questoes-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.questao-card {
    background: rgba(26, 47, 74, 0.6);
    border: 2px solid var(--azul-claro);
    border-radius: 12px;
    padding: 2rem;
    backdrop-filter: blur(10px);
    transition: var(--transicao);
}

.questao-card.respondida {
    border-color: var(--azul-claro);
}

.questao-card.acertou {
    border-color: var(--sucesso);
    background: rgba(76, 175, 80, 0.1);
}

.questao-card.errou {
    border-color: var(--erro);
    background: rgba(244, 67, 54, 0.1);
}

.questao-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.questao-numero {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--destaque);
}

.questao-tema {
    background: var(--azul-claro);
    color: var(--texto-claro);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
}

.questao-enunciado {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: var(--texto-claro);
}

.alternativas {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.alternativa {
    background: rgba(10, 22, 40, 0.6);
    border: 2px solid var(--azul-claro);
    border-radius: 8px;
    padding: 1rem 1.5rem;
    cursor: pointer;
    transition: var(--transicao);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.alternativa:hover {
    background: rgba(26, 47, 74, 0.8);
    border-color: var(--destaque);
    transform: translateX(5px);
}

.alternativa input[type="radio"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.alternativa.correta {
    background: rgba(76, 175, 80, 0.2);
    border-color: var(--sucesso);
    color: var(--sucesso);
}

.alternativa.incorreta {
    background: rgba(244, 67, 54, 0.2);
    border-color: var(--erro);
    color: var(--erro);
}

.questao-feedback {
    margin-top: 1.5rem;
    padding: 1.5rem;
    border-radius: 8px;
    display: none;
}

.questao-feedback.show {
    display: block;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.questao-feedback.acertou {
    background: rgba(76, 175, 80, 0.2);
    border-left: 4px solid var(--sucesso);
    color: var(--texto-claro);
}

.questao-feedback.errou {
    background: rgba(244, 67, 54, 0.2);
    border-left: 4px solid var(--erro);
    color: var(--texto-claro);
}

.questao-feedback h4 {
    margin-bottom: 0.8rem;
    font-size: 1.1rem;
}

.questao-explicacao {
    line-height: 1.8;
    color: var(--texto-medio);
}

/* Progresso */
.progresso-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.progresso-card {
    background: rgba(26, 47, 74, 0.6);
    border: 2px solid var(--azul-claro);
    border-radius: 12px;
    padding: 2rem;
    backdrop-filter: blur(10px);
}

.progresso-card h3 {
    color: var(--destaque);
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: rgba(10, 22, 40, 0.6);
    border-radius: 8px;
    border: 1px solid var(--azul-claro);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--destaque);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--texto-medio);
    font-size: 0.9rem;
}

.temas-progresso {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.tema-progresso-item {
    background: rgba(10, 22, 40, 0.6);
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid var(--azul-claro);
}

.tema-progresso-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    color: var(--texto-claro);
}

.progresso-bar {
    width: 100%;
    height: 8px;
    background: rgba(10, 22, 40, 0.8);
    border-radius: 4px;
    overflow: hidden;
}

.progresso-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--destaque), var(--destaque-hover));
    transition: width 0.5s ease;
    border-radius: 4px;
}

/* Footer */
.footer {
    background: rgba(10, 22, 40, 0.95);
    padding: 4rem 0;
    text-align: center;
    border-top: 2px solid var(--azul-claro);
    margin-top: 4rem;
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
}

.footer-title {
    font-size: 2rem;
    color: var(--destaque);
    margin-bottom: 1rem;
}

.footer-description {
    font-size: 1.1rem;
    color: var(--texto-medio);
    margin-bottom: 2rem;
}

.cta-button {
    display: inline-block;
    background: linear-gradient(135deg, var(--destaque), var(--destaque-hover));
    color: var(--branco);
    padding: 1.2rem 3rem;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    transition: var(--transicao);
    box-shadow: 0 4px 20px rgba(74, 158, 255, 0.4);
    margin-bottom: 1.5rem;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 30px rgba(74, 158, 255, 0.6);
    background: linear-gradient(135deg, var(--destaque-hover), var(--destaque));
}

.footer-note {
    color: var(--texto-medio);
    font-style: italic;
    font-size: 0.95rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: linear-gradient(135deg, var(--azul-escuro), var(--azul-medio));
    border: 2px solid var(--azul-claro);
    border-radius: 12px;
    padding: 2rem;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 10px 50px rgba(0, 0, 0, 0.5);
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    font-size: 2rem;
    color: var(--texto-claro);
    cursor: pointer;
    transition: var(--transicao);
    line-height: 1;
}

.modal-close:hover {
    color: var(--destaque);
    transform: rotate(90deg);
}

#modalBody {
    color: var(--texto-claro);
    line-height: 1.8;
}

#modalBody h3 {
    color: var(--destaque);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

#modalBody p {
    margin-bottom: 1rem;
    color: var(--texto-medio);
}

/* Responsive */
@media (max-width: 768px) {
    .logo {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .temas-grid {
        grid-template-columns: 1fr;
    }
    
    .questoes-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .modal-content {
        margin: 1rem;
        padding: 1.5rem;
    }
}

/* Search Box */
.search-box {
    margin-bottom: 2rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.search-input {
    width: 100%;
    padding: 1rem 1.5rem;
    background: rgba(26, 47, 74, 0.6);
    border: 2px solid var(--azul-claro);
    border-radius: 8px;
    color: var(--texto-claro);
    font-size: 1rem;
    transition: var(--transicao);
}

.search-input:focus {
    outline: none;
    border-color: var(--destaque);
    box-shadow: 0 0 15px rgba(74, 158, 255, 0.3);
}

.search-input::placeholder {
    color: var(--texto-medio);
}

/* Calculadoras */
.calculadoras-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.calculadora-card {
    background: rgba(26, 47, 74, 0.6);
    border: 2px solid var(--azul-claro);
    border-radius: 12px;
    padding: 2rem;
    backdrop-filter: blur(10px);
    transition: var(--transicao);
}

.calculadora-card:hover {
    transform: translateY(-5px);
    border-color: var(--destaque);
    box-shadow: 0 8px 25px rgba(74, 158, 255, 0.4);
}

.calculadora-card h3 {
    color: var(--destaque);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.calculadora-card .formula {
    background: rgba(10, 22, 40, 0.8);
    padding: 1rem;
    border-radius: 8px;
    margin: 1rem 0;
    font-family: 'Courier New', monospace;
    color: var(--destaque);
    text-align: center;
    font-size: 1.1rem;
    border: 1px solid var(--azul-claro);
}

.calculadora-input-group {
    margin: 1.5rem 0;
}

.calculadora-input-group label {
    display: block;
    color: var(--texto-claro);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.calculadora-input-group input {
    width: 100%;
    padding: 0.8rem;
    background: rgba(10, 22, 40, 0.8);
    border: 2px solid var(--azul-claro);
    border-radius: 8px;
    color: var(--texto-claro);
    font-size: 1rem;
    transition: var(--transicao);
}

.calculadora-input-group input:focus {
    outline: none;
    border-color: var(--destaque);
    box-shadow: 0 0 10px rgba(74, 158, 255, 0.3);
}

.calculadora-resultado {
    background: rgba(76, 175, 80, 0.2);
    border: 2px solid var(--sucesso);
    border-radius: 8px;
    padding: 1.5rem;
    margin-top: 1.5rem;
    text-align: center;
    display: none;
}

.calculadora-resultado.show {
    display: block;
    animation: slideDown 0.3s ease;
}

.calculadora-resultado .resultado-valor {
    font-size: 2rem;
    font-weight: 700;
    color: var(--sucesso);
    margin: 0.5rem 0;
}

.calculadora-resultado .resultado-label {
    color: var(--texto-medio);
    font-size: 0.9rem;
}

.calculadora-btn {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--destaque), var(--destaque-hover));
    border: none;
    border-radius: 8px;
    color: var(--branco);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transicao);
    margin-top: 1rem;
}

.calculadora-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(74, 158, 255, 0.4);
}

.calculadora-explicacao {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--azul-claro);
    color: var(--texto-medio);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Tabelas Interativas */
.tabela-interativa {
    width: 100%;
    margin: 1.5rem 0;
    border-collapse: collapse;
    background: rgba(10, 22, 40, 0.6);
    border-radius: 8px;
    overflow: hidden;
}

.tabela-interativa th {
    background: var(--azul-claro);
    color: var(--texto-claro);
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    border-bottom: 2px solid var(--destaque);
}

.tabela-interativa td {
    padding: 0.8rem 1rem;
    border-bottom: 1px solid var(--azul-claro);
    color: var(--texto-medio);
}

.tabela-interativa tr:hover {
    background: rgba(26, 47, 74, 0.8);
}

.tabela-interativa tr:last-child td {
    border-bottom: none;
}

/* Gráficos */
.chart-container {
    margin-top: 2rem;
    padding: 1.5rem;
    background: rgba(10, 22, 40, 0.6);
    border-radius: 8px;
    border: 1px solid var(--azul-claro);
    position: relative;
    height: 300px;
}

/* Conteúdo Expandido no Modal */
.modal-large {
    max-width: 1000px;
}

.modal-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    border-bottom: 2px solid var(--azul-claro);
}

.modal-tab {
    padding: 0.8rem 1.5rem;
    background: transparent;
    border: none;
    color: var(--texto-medio);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: var(--transicao);
    font-size: 1rem;
}

.modal-tab.active {
    color: var(--destaque);
    border-bottom-color: var(--destaque);
}

.modal-tab-content {
    display: none;
}

.modal-tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

/* Fórmulas e Exemplos */
.formula-box {
    background: rgba(10, 22, 40, 0.8);
    border-left: 4px solid var(--destaque);
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-radius: 8px;
}

.formula-box .formula-title {
    color: var(--destaque);
    font-weight: 600;
    margin-bottom: 0.8rem;
}

.exemplo-box {
    background: rgba(26, 47, 74, 0.4);
    border: 1px solid var(--azul-claro);
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-radius: 8px;
}

.exemplo-box .exemplo-title {
    color: var(--destaque);
    font-weight: 600;
    margin-bottom: 1rem;
}

/* Lista de Pontos Chave Melhorada */
.pontos-chave {
    background: rgba(26, 47, 74, 0.4);
    padding: 1.5rem;
    border-radius: 8px;
    margin: 1.5rem 0;
}

.pontos-chave h4 {
    color: var(--destaque);
    margin-bottom: 1rem;
}

.pontos-chave ul {
    list-style: none;
    padding: 0;
}

.pontos-chave li {
    padding: 0.8rem;
    margin: 0.5rem 0;
    background: rgba(10, 22, 40, 0.6);
    border-left: 3px solid var(--destaque);
    border-radius: 4px;
    color: var(--texto-medio);
}

.pontos-chave li::before {
    content: "✓ ";
    color: var(--sucesso);
    font-weight: bold;
    margin-right: 0.5rem;
}

/* Comparação Visual */
.comparacao-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.comparacao-item {
    background: rgba(26, 47, 74, 0.6);
    padding: 1.5rem;
    border-radius: 8px;
    border: 2px solid var(--azul-claro);
}

.comparacao-item h5 {
    color: var(--destaque);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

/* Destaque Visual */
.destaque-box {
    background: linear-gradient(135deg, rgba(74, 158, 255, 0.1), rgba(74, 158, 255, 0.05));
    border: 2px solid var(--destaque);
    padding: 1.5rem;
    border-radius: 8px;
    margin: 1.5rem 0;
}

.destaque-box strong {
    color: var(--destaque);
}

/* Responsive para Calculadoras */
@media (max-width: 768px) {
    .calculadoras-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-large {
        max-width: 95%;
    }
    
    .comparacao-grid {
        grid-template-columns: 1fr;
    }
    
    .chart-container {
        height: 250px;
    }
}