/* GERAL E RESET */
:root {
    --cor-primaria: #003366;
    --cor-secundaria: #005a9c;
    --cor-destaque: #ffc107;
    --cor-fundo: #f8f9fa;
    --cor-texto: #212529;
    --cor-sucesso: #28a745;
    --cor-erro: #dc3545;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.7;
    background-color: var(--cor-fundo);
    color: var(--cor-texto);
    padding-bottom: 80px;
}
header {
    position: relative;
    background: linear-gradient(90deg, var(--cor-primaria), var(--cor-secundaria));
    color: #ffffff;
    padding: 1.5rem 1rem;
    text-align: center;
    border-bottom: 5px solid var(--cor-destaque);
}
header h1 { font-size: 2.2rem; }
#logout-btn {
    position: absolute; top: 50%; transform: translateY(-50%); right: 20px;
    background-color: var(--cor-destaque); color: var(--cor-primaria);
    border: none; border-radius: 50%; width: 45px; height: 45px;
    font-size: 1.2rem; cursor: pointer; transition: all 0.2s ease-in-out;
    display: flex; align-items: center; justify-content: center;
}
#logout-btn:hover {
    background-color: #ffca2c; transform: translateY(-50%) scale(1.1);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}
.login-container {
    max-width: 400px; margin: 5rem auto; padding: 2rem;
    background: #fff; border-radius: 8px; box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    text-align: center;
}
.login-container h2 { color: var(--cor-primaria); margin-bottom: 1.5rem; }
.login-container input {
    width: 100%; padding: 0.8rem; margin-bottom: 1rem;
    border: 1px solid #ccc; border-radius: 5px; font-size: 1rem;
}
.login-container button {
    width: 100%; padding: 0.8rem; background-color: var(--cor-primaria);
    color: white; border: none; border-radius: 5px; cursor: pointer; font-size: 1rem;
    transition: background-color 0.2s;
}
.login-container button:hover { background-color: var(--cor-secundaria); }
#mensagem-erro {
    color: var(--cor-erro); margin-top: 1rem; font-weight: bold; display: none;
}
.main-container { max-width: 900px; margin: 2rem auto; padding: 0 1rem; }
.module {
    display: none; background: #ffffff; padding: 2rem;
    border-radius: 8px; box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}
.module.active { display: block; }
.module h2 {
    font-size: 2rem; color: var(--cor-primaria); margin-bottom: 1.5rem;
    border-bottom: 3px solid var(--cor-destaque); padding-bottom: 0.75rem;
}
.floating-nav {
    position: fixed; bottom: 20px; right: 20px; display: flex;
    align-items: center; gap: 10px; background-color: var(--cor-primaria);
    padding: 8px; border-radius: 50px; box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
    z-index: 1001;
}
.floating-nav button {
    width: 40px; height: 40px; border-radius: 50%; border: none;
    background-color: var(--cor-secundaria); color: white; font-size: 1.5rem;
    font-weight: bold; cursor: pointer; display: flex;
    align-items: center; justify-content: center;
}
.floating-nav button:disabled { background-color: #999; cursor: not-allowed; opacity: 0.6; }
#module-indicator {
    color: white; font-weight: bold; font-size: 1rem; min-width: 50px; text-align: center;
}
.status-bloqueio {
    margin-top: 2rem; padding: 1rem; border-radius: 8px; font-weight: bold;
    text-align: center; background-color: #fff3cd; color: #856404;
    border: 1px solid #ffeeba;
}
.release-countdown-container {
    text-align: center; background-color: var(--cor-primaria); color: white;
    padding: 2rem; border-radius: 8px; margin: 2rem auto;
}
.release-countdown-container h3 { color: var(--cor-destaque); font-size: 1.8rem; margin-bottom: 1rem; }
.release-countdown-container p { font-size: 1.1rem; margin-bottom: 1.5rem; }
#countdown-timer {
    display: flex; justify-content: center; gap: 1rem;
    font-family: 'Courier New', Courier, monospace;
}
.countdown-block {
    background: rgba(255, 255, 255, 0.1); padding: 1rem; border-radius: 5px; min-width: 90px;
}
.countdown-block span { display: block; }
.countdown-value { font-size: 2.5rem; font-weight: bold; line-height: 1; }
.countdown-label { font-size: 0.8rem; text-transform: uppercase; margin-top: 0.5rem; }

/* ESTILOS PARA QUIZ E CERTIFICADO PDF */
#quiz-container { padding: 1.5rem; background-color: #f0f6fc; border-left: 5px solid var(--cor-secundaria); border-radius: 0 8px 8px 0; }
#pergunta-titulo { font-size: 1.3rem; margin-bottom: 1.5rem; }
#opcoes-quiz button {
    display: block; width: 100%; text-align: left; padding: 1rem;
    margin: 0.5rem 0; font-size: 1rem; border: 1px solid #ccc;
    border-radius: 5px; cursor: pointer; background-color: #fff;
    transition: all 0.2s ease;
}
#opcoes-quiz button:hover:not(:disabled) { background-color: #dfe9f5; }
#opcoes-quiz button:disabled { cursor: not-allowed; opacity: 0.7; }
#opcoes-quiz button.correta { background-color: #d4edda; border-color: var(--cor-sucesso); font-weight: bold; }
#opcoes-quiz button.incorreta { background-color: #f8d7da; border-color: var(--cor-erro); }
#feedback { margin-top: 1rem; font-weight: bold; font-size: 1.1rem; }
#certificado-form-container, #reprovado-container {
    margin-top: 2rem; padding: 1.5rem; border-radius: 8px; text-align: center;
}
#certificado-form-container { background-color: #eaf5e9; border: 2px solid var(--cor-sucesso); }
#reprovado-container { background-color: #fdeaea; border: 2px solid var(--cor-erro); }
#certificado-form-container label, #certificado-form-container select, #certificado-form-container input {
    display: block; width: 100%; max-width: 400px; margin: 0.5rem auto;
    text-align: left; font-weight: bold;
}
#certificado-form-container input, #certificado-form-container select {
    padding: 0.8rem; border: 1px solid #ccc; border-radius: 5px;
    font-size: 1rem; margin-bottom: 1rem;
}
#gerar-certificado-btn, #tentar-novamente-btn {
    padding: 0.8rem 1.8rem; font-size: 1rem; border-radius: 5px;
    cursor: pointer; border: none; color: white; font-weight: bold;
    transition: transform 0.2s ease; margin-top: 1rem;
}
#gerar-certificado-btn { background-color: var(--cor-sucesso); }
#tentar-novamente-btn { background-color: var(--cor-secundaria); }
#gerar-certificado-btn:hover, #tentar-novamente-btn:hover { transform: scale(1.05); }

/* AJUSTES PARA MOBILE */
@media (max-width: 768px) {
    header h1 { font-size: 1.8rem; padding-right: 45px; }
    #logout-btn { top: 50%; right: 10px; transform: translateY(-50%); }
}

/* FORMATAÇÃO APRIMORADA PARA CONTEÚDO DAS AULAS */

/* Estilo para parágrafos do conteúdo */
.module p {
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 1.2rem;
    text-align: justify;
    color: #333;
}

/* Títulos principais das seções */
.module h3 {
    font-size: 1.4rem;
    color: var(--cor-primaria);
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-weight: 600;
    border-left: 4px solid var(--cor-destaque);
    padding-left: 1rem;
    background: linear-gradient(90deg, rgba(255, 193, 7, 0.1) 0%, transparent 100%);
    padding: 0.8rem 1rem;
    border-radius: 0 8px 8px 0;
}

/* Subtítulos */
.module h4 {
    font-size: 1.2rem;
    color: var(--cor-secundaria);
    margin-top: 1.5rem;
    margin-bottom: 0.8rem;
    font-weight: 500;
    border-bottom: 2px solid var(--cor-destaque);
    padding-bottom: 0.3rem;
    display: inline-block;
}

/* Listas com estilo aprimorado */
.module ul {
    margin: 1.5rem 0;
    padding-left: 0;
}

.module ul li {
    list-style: none;
    position: relative;
    padding-left: 2rem;
    margin-bottom: 0.8rem;
    line-height: 1.6;
    font-size: 1.02rem;
}

.module ul li:before {
    content: "▶";
    position: absolute;
    left: 0;
    color: var(--cor-destaque);
    font-weight: bold;
    font-size: 0.9rem;
}

/* Listas ordenadas */
.module ol {
    margin: 1.5rem 0;
    padding-left: 2rem;
}

.module ol li {
    margin-bottom: 0.8rem;
    line-height: 1.6;
    font-size: 1.02rem;
    color: #444;
}

/* Caixas de destaque para fórmulas e conceitos importantes */
.formula-box, .concept-box {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border: 2px solid var(--cor-secundaria);
    border-radius: 12px;
    padding: 1.5rem;
    margin: 2rem 0;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    position: relative;
}

.formula-box:before {
    content: "📐";
    position: absolute;
    top: -10px;
    left: 20px;
    background: white;
    padding: 0 10px;
    font-size: 1.2rem;
}

/* Caixas de princípios importantes */
.principle-box {
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    border-left: 5px solid var(--cor-primaria);
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 0 12px 12px 0;
    font-style: italic;
    font-size: 1.1rem;
    line-height: 1.6;
    position: relative;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

.principle-box:before {
    content: """;
    font-size: 4rem;
    color: var(--cor-primaria);
    position: absolute;
    top: -10px;
    left: 10px;
    opacity: 0.3;
}

/* Tabelas com estilo moderno */
.module table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.module table th {
    background: linear-gradient(135deg, var(--cor-primaria) 0%, var(--cor-secundaria) 100%);
    color: white;
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    font-size: 1.05rem;
}

.module table td {
    padding: 0.8rem 1rem;
    border-bottom: 1px solid #e9ecef;
    font-size: 1rem;
}

.module table tbody tr:nth-child(even) {
    background-color: #f8f9fa;
}

.module table tbody tr:hover {
    background-color: #e3f2fd;
    transition: background-color 0.3s ease;
}

/* Texto em destaque */
.module strong {
    color: var(--cor-primaria);
    font-weight: 600;
}

/* Código e valores técnicos */
.module code, .technical-value {
    background-color: #f1f3f4;
    color: var(--cor-primaria);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.95rem;
    font-weight: 500;
}

/* Seções numeradas */
.numbered-section {
    counter-increment: section;
    margin: 2rem 0;
}

.numbered-section:before {
    content: counter(section) ". ";
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--cor-destaque);
}

/* Caixas de observação e notas */
.note-box {
    background: linear-gradient(135deg, #fff3cd 0%, #ffeaa7 100%);
    border-left: 5px solid var(--cor-destaque);
    padding: 1.2rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
    position: relative;
}

.note-box:before {
    content: "💡";
    position: absolute;
    top: -8px;
    left: 15px;
    background: white;
    padding: 0 8px;
    border-radius: 50%;
}

/* Caixas de warning/atenção */
.warning-box {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    border-left: 5px solid var(--cor-erro);
    padding: 1.2rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
    position: relative;
}

.warning-box:before {
    content: "⚠️";
    position: absolute;
    top: -8px;
    left: 15px;
    background: white;
    padding: 0 8px;
    border-radius: 50%;
}

/* Caixas de sucesso/aprovação */
.success-box {
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    border-left: 5px solid var(--cor-sucesso);
    padding: 1.2rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
    position: relative;
}

.success-box:before {
    content: "✅";
    position: absolute;
    top: -8px;
    left: 15px;
    background: white;
    padding: 0 8px;
    border-radius: 50%;
}

/* Containers para fórmulas matemáticas */
.formula-container {
    text-align: center;
    background: white;
    border: 2px dashed var(--cor-secundaria);
    border-radius: 10px;
    padding: 1.5rem;
    margin: 2rem 0;
    font-family: 'Times New Roman', serif;
    font-size: 1.2rem;
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.05);
}

/* Listas de recomendações */
.recommendation-list {
    background: linear-gradient(135deg, #e8f5e8 0%, #d4edda 100%);
    border-radius: 10px;
    padding: 1.5rem;
    margin: 2rem 0;
}

.recommendation-list li {
    color: #155724;
    margin-bottom: 0.8rem;
}

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

/* Caixas de problemas/situações práticas */
.problem-list {
    background: linear-gradient(135deg, #fff3cd 0%, #ffeaa7 100%);
    border-radius: 10px;
    padding: 1.5rem;
    margin: 2rem 0;
}

.problem-list li {
    color: #856404;
    margin-bottom: 0.8rem;
}

/* Caixas para respostas e conclusões */
.answer-box {
    background: linear-gradient(135deg, #cce5ff 0%, #b3d9ff 100%);
    border: 2px solid var(--cor-primaria);
    border-radius: 10px;
    padding: 1.5rem;
    margin: 1.5rem 0;
    font-weight: 500;
    text-align: center;
}

.conclusion-box {
    background: linear-gradient(135deg, #e6f3ff 0%, #cce5ff 100%);
    border: 3px solid var(--cor-secundaria);
    border-radius: 15px;
    padding: 2rem;
    margin: 2rem 0;
    font-size: 1.1rem;
    line-height: 1.7;
    position: relative;
}

.conclusion-box:before {
    content: "🎯 CONCLUSÃO";
    position: absolute;
    top: -12px;
    left: 30px;
    background: var(--cor-secundaria);
    color: white;
    padding: 0.3rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: bold;
}

/* Ajuste responsivo para imagens dentro das aulas */
.image-container {
    text-align: center;
    margin: 2rem 0;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.image-container img,
figure img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

figure {
    margin: 2rem 0;
    text-align: center;
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

figcaption {
    margin-top: 1rem;
    font-style: italic;
    color: #666;
    font-size: 0.95rem;
    padding: 0.5rem;
    background: #f8f9fa;
    border-radius: 6px;
    border-left: 3px solid var(--cor-destaque);
}

/* Garante que as imagens não ultrapassem a largura do container em telas pequenas */
@media (max-width: 768px) {
    .main-container,
    .module {
        padding: 0 0.5rem;
    }
    
    .module p {
        font-size: 1rem;
    }
    
    .module h3 {
        font-size: 1.3rem;
        margin-top: 1.5rem;
    }
    
    .module h4 {
        font-size: 1.1rem;
    }
    
    .image-container img,
    figure img {
        max-width: 100vw;
        width: 100%;
        height: auto;
    }
    
    .formula-container {
        padding: 1rem;
        font-size: 1rem;
    }
    
    .principle-box,
    .conclusion-box {
        padding: 1rem;
        margin: 1rem 0;
    }
}

/* ========== LOGIN OVERLAY ========== */
.login-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: linear-gradient(135deg, #003366, #005a9c);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}
.login-card {
    background: white;
    padding: 40px;
    border-radius: 16px;
    text-align: center;
    max-width: 400px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0,0,0,.3);
}
.login-card h2 {
    color: #003366;
    margin: 0 0 12px 0;
    font-size: 1.5rem;
}
.login-card p {
    color: #555;
    margin-bottom: 24px;
    font-size: .95rem;
}
.login-card #google-login-btn {
    background: white;
    color: #333;
    border: 2px solid #ddd;
    padding: 12px 28px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all .3s;
}
.login-card #google-login-btn:hover {
    border-color: #4285f4;
    box-shadow: 0 4px 12px rgba(66,133,244,.2);
}
.login-card #google-login-btn i {
    color: #4285f4;
    font-size: 1.2rem;
}
.login-error {
    color: #dc3545;
    margin-top: 12px;
    font-size: .85rem;
}