/* General Body Styling */
@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700&family=Open+Sans:wght@400;600&display=swap');

body {
    font-family: 'Open Sans', sans-serif;
    background-color: #f0f2f5;
    color: #333;
    line-height: 1.6;
    margin: 0;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background-color: #ffffff;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

/* Header and Title */
.titulo {
    text-align: center;
    padding-bottom: 20px;
    margin-bottom: 20px;
    border-bottom: 2px solid #e7e7e7;
}

.titulo h1 {
    font-family: 'Roboto', sans-serif;
    font-size: 2.5em;
    font-weight: 700;
    color: #1a237e; /* Dark Blue */
}

/* General Information Section */
.informacoes-gerais {
    background-color: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 30px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
}

.informacoes-gerais div {
    font-size: 1.1em;
}

.informacoes-gerais span.label {
    font-weight: 600;
    color: #495057;
}

.informacoes-gerais span.value {
    color: #212529;
}

/* Generic Card Styling for Sections */
.card {
    background-color: #ffffff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 25px;
    margin-bottom: 25px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.card h2 {
    font-family: 'Roboto', sans-serif;
    font-size: 1.8em;
    font-weight: 500;
    color: #3f51b5; /* Indigo */
    margin-top: 0;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
}

/* Question Section */
.numero-questao {
    font-size: 1.5em !important;
    color: #1a237e !important;
    margin-bottom: 15px !important;
}

.enunciado-questao {
    background-color: #e3f2fd; /* Light Blue */
    border-left: 5px solid #2196f3; /* Blue */
    padding: 20px;
    margin: 20px 0;
    border-radius: 5px;
}

.enunciado-questao p {
    margin: 0;
    font-size: 1.2em;
    color: #1d4ed8;
}

/* Resolution Strategy Section */
.estrategia-resolucao p {
    font-size: 1.1em;
    color: #444;
}

/* Resolution Steps Section */
.passos-resolucao .passo {
    margin-bottom: 20px;
}

.passos-resolucao .passo h3 {
    font-family: 'Roboto', sans-serif;
    font-size: 1.4em;
    font-weight: 500;
    color: #00796b; /* Teal */
    margin-bottom: 10px;
}

/* KaTeX Math Styling */
.katex-display {
    text-align: center;
    margin: 1.5em 0;
    font-size: 1.2em;
    overflow-x: auto;
    padding: 10px 0;
}

/* Interpretation of Results Section */
.interpretacao-resultados p {
    font-size: 1.1em;
    color: #444;
}

/* Final Answer Section */
.resposta-final {
    background-color: #e8f5e9; /* Light Green */
    border: 1px solid #a5d6a7;
    border-left: 5px solid #4caf50; /* Green */
}

.resposta-final h2 {
    color: #2e7d32; /* Dark Green */
}

.resposta-final p {
    font-size: 1.2em;
    font-weight: 600;
    color: #1b5e20; /* Darker Green */
}

/* Navigation Buttons */
.navegacao {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
}

.btn-nav {
    display: inline-block;
    padding: 12px 24px;
    font-family: 'Roboto', sans-serif;
    font-size: 1em;
    font-weight: 500;
    text-decoration: none;
    color: #ffffff;
    background-color: #3f51b5; /* Indigo */
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
    text-align: center;
}

.btn-nav:hover {
    background-color: #303f9f; /* Darker Indigo */
    transform: translateY(-2px);
}

.btn-nav.disabled {
    background-color: #9e9e9e; /* Gray */
    color: #e0e0e0;
    cursor: not-allowed;
    pointer-events: none;
    transform: none;
}

.btn-nav-center {
    background-color: #6c757d; /* Grayish Blue */
}

.btn-nav-center:hover {
    background-color: #5a6268;
}