/* ============================================================
   estilo.css — Folha de estilos global do site
   Design baseado no padrão da pasta "matematica" (mais atualizado)
   Paleta azul-marinho + laranja, tipografia Oswald + Arial.
   ============================================================ */

:root {
    --cor-primaria: #003366;     /* Azul Marinho Profundo */
    --cor-secundaria: #D35400;   /* Laranja Queimado */
    --cor-texto: #2C3E50;
    --cor-fundo-claro: #F4F7F6;
    --fonte-titulo: 'Oswald', sans-serif;
    --fonte-corpo: Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

body {
    font-family: var(--fonte-corpo);
    margin: 0;
    padding: 0;
    background-color: var(--cor-fundo-claro);
    color: var(--cor-texto);
    line-height: 1.6;
    scroll-behavior: smooth;
}

h1, h2, h3 {
    font-family: var(--fonte-titulo);
    color: var(--cor-primaria);
    text-transform: uppercase;
}

h4 {
    font-family: var(--fonte-titulo);
    color: var(--cor-primaria);
}

.formula {
    font-style: italic;
    font-weight: bold;
    color: var(--cor-secundaria);
}

/* ---- Cabeçalho ---- */
header {
    background-color: var(--cor-primaria);
    color: white;
    padding: 20px 5%;
    text-align: center;
    border-bottom: 5px solid var(--cor-secundaria);
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

header h1 {
    color: white;
    margin: 0 0 5px 0;
    font-size: 2.2em;
}

header p {
    font-size: 1.1em;
    margin: 0;
}

/* ---- Layout principal ---- */
.container {
    display: flex;
    width: 95%;
    max-width: 1400px;
    margin: 20px auto;
    gap: 25px;
}

.conteudo-principal {
    flex: 3;
    background-color: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 0 15px rgba(0,0,0,0.05);
    min-height: 100vh;
}

/* ---- Menu lateral ---- */
.menu-lateral {
    flex: 1;
    max-width: 300px;
    position: sticky;
    top: 20px;
    height: fit-content;
    background-color: white;
    padding: 20px 15px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.05);
    overflow-y: auto;
    max-height: 90vh;
}

.menu-lateral h2 {
    margin-top: 0;
    font-size: 1.3em;
    border-bottom: 3px solid var(--cor-secundaria);
    padding-bottom: 10px;
    margin-bottom: 15px;
    color: var(--cor-texto);
}

.menu-lateral h3 {
    font-size: 1em;
    color: var(--cor-secundaria);
    margin-top: 18px;
    margin-bottom: 5px;
    border-bottom: 1px dashed #ccc;
    padding-bottom: 4px;
}

.menu-lateral ul { list-style: none; padding: 0; margin: 0; }
.menu-lateral li { display: block; margin-bottom: 5px; }

.menu-lateral a {
    text-decoration: none;
    color: var(--cor-texto);
    display: block;
    padding: 5px 10px;
    border-left: 3px solid transparent;
    transition: background-color 0.2s, border-left 0.2s, color 0.2s;
    font-size: 0.9em;
}

.menu-lateral a:hover {
    background-color: rgba(0,51,102,0.05);
    border-left-color: var(--cor-primaria);
    color: var(--cor-primaria);
}

.menu-lateral .aula-ativa a {
    background-color: var(--cor-primaria);
    color: white;
    font-weight: bold;
    border-radius: 0 4px 4px 0;
    border-left-color: var(--cor-secundaria);
}

/* ---- Seções de aula ---- */
.secao-aula {
    margin-bottom: 50px;
    padding: 25px;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    background-color: #ffffff;
}

.container-resumo { margin-bottom: 30px; }

.resumo-conteudo {
    padding: 15px;
    background-color: #EBF5FB;
    border-left: 5px solid var(--cor-primaria);
    border-radius: 4px;
    margin-bottom: 30px;
}

.passo-teoria {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #f0f0f0;
}

.passo-teoria:last-child { border-bottom: none; }

.destaque-formula {
    background-color: #fef9f0;
    border: 2px solid var(--cor-secundaria);
    border-radius: 6px;
    padding: 15px 20px;
    margin: 15px 0;
    text-align: center;
    font-size: 1.1em;
}

.destaque-formula p { margin: 5px 0; }

/* ---- Questões ---- */
.questao {
    padding: 15px;
    margin-bottom: 20px;
    border: 1px dashed #ddd;
    border-radius: 4px;
}

.resolucao-bloco {
    background-color: #f7f7f7;
    border-left: 5px solid #ccc;
    padding: 10px;
    margin-top: 10px;
    border-radius: 0 4px 4px 0;
}

.btn-gabarito {
    background-color: var(--cor-secundaria);
    color: white;
    border: none;
    padding: 10px 15px;
    margin: 10px 0;
    cursor: pointer;
    border-radius: 4px;
    font-size: 1em;
    transition: background-color 0.3s, transform 0.1s;
    font-family: var(--fonte-titulo);
}

.btn-gabarito:hover {
    background-color: #A04000;
    transform: translateY(-1px);
}

.gabarito-resolucao {
    background-color: #FEF5E7;
    border: 1px solid var(--cor-secundaria);
    padding: 15px;
    display: none;
    margin-top: 10px;
    border-radius: 4px;
}

/* ---- Tabelas ---- */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 15px 0;
}

table th {
    background-color: var(--cor-primaria);
    color: white;
    padding: 10px;
    text-align: center;
    font-family: var(--fonte-titulo);
}

table td {
    border: 1px solid #ddd;
    padding: 8px 12px;
    text-align: center;
}

table tr:nth-child(even) { background-color: #f5f5f5; }

/* ---- Cards de aplicação ---- */
.cards-aplicacao {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.card {
    background: #fdfdfd;
    padding: 20px;
    border-radius: 10px;
    border-left: 5px solid var(--cor-primaria);
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.card h4 { margin-top: 0; }

/* ---- Figuras / SVG ---- */
.figura-aula {
    display: block;
    margin: 30px auto;
    text-align: center;
    max-width: 90%;
}

.figura-aula svg, .figura-aula img {
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    background: white;
    box-shadow: 2px 2px 8px rgba(0,0,0,0.08);
    max-width: 100%;
    height: auto;
}

.figura-aula figcaption {
    font-size: 0.9em;
    color: #555;
    margin-top: 8px;
    font-style: italic;
}

.figura-grande img { max-width: 100%; }

/* ---- Simulações ---- */
.simulacao-interativa {
    margin: 40px 0;
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 10px;
    border: 2px solid var(--cor-primaria);
}

.iframe-container {
    position: relative;
    width: 100%;
    height: 600px;
    overflow: hidden;
    border-radius: 8px;
    background: #fff;
}

.iframe-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* ---- Índice de aulas centralizado ---- */
.indice-aulas {
    margin: 40px 0 20px;
}

.indice-aulas-titulo {
    text-align: center;
    font-size: 1.8em;
    margin-bottom: 8px;
}

.indice-aulas-subtitulo {
    text-align: center;
    color: #555;
    margin: 0 0 25px;
    font-size: 1em;
}

.indice-aulas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

.indice-coluna {
    background: #ffffff;
    border-radius: 12px;
    padding: 25px 20px;
    box-shadow: 0 6px 16px rgba(0,0,0,0.08);
    border-top: 6px solid var(--cor-secundaria);
    transition: transform 0.25s, box-shadow 0.25s;
}

.indice-coluna:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 22px rgba(0,0,0,0.12);
}

.indice-coluna h3 {
    margin: 0 0 10px;
    text-align: center;
    color: var(--cor-primaria);
    font-size: 1.25em;
    padding-bottom: 12px;
    border-bottom: 2px dashed #e6e6e6;
}

.indice-coluna ul {
    list-style: none;
    padding: 0;
    margin: 12px 0 0;
    max-height: 460px;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--cor-secundaria) #f0f0f0;
}

.indice-coluna ul::-webkit-scrollbar { width: 8px; }
.indice-coluna ul::-webkit-scrollbar-track { background: #f0f0f0; border-radius: 4px; }
.indice-coluna ul::-webkit-scrollbar-thumb { background: var(--cor-secundaria); border-radius: 4px; }

.indice-coluna li {
    margin-bottom: 4px;
    width: 100%;
}

.indice-coluna a {
    display: block;
    padding: 9px 12px;
    text-decoration: none;
    color: var(--cor-texto);
    border-radius: 6px;
    border-left: 3px solid transparent;
    transition: background-color 0.2s, color 0.2s, border-left-color 0.2s, transform 0.2s;
    font-size: 0.92em;
    font-family: var(--fonte-corpo);
}

.indice-coluna a:hover {
    background: var(--cor-primaria);
    color: #ffffff;
    border-left-color: var(--cor-secundaria);
    transform: translateX(3px);
}

@media (max-width: 700px) {
    .indice-coluna ul { max-height: 350px; }
}

/* ---- Cards de seleção (página inicial) ---- */
.selecao-disciplinas {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-top: 30px;
    flex-wrap: wrap;
}

.card-disciplina {
    flex: 1;
    min-width: 280px;
    max-width: 450px;
    text-align: center;
    padding: 40px 20px;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
    text-decoration: none;
    color: var(--cor-texto);
    background-color: #fff;
}

.card-disciplina:hover {
    transform: translateY(-10px);
    border-color: var(--cor-secundaria);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.card-disciplina h2 {
    margin-bottom: 15px;
    font-size: 2em;
}

.icon-exatas {
    font-size: 4em;
    margin-bottom: 15px;
    display: block;
    color: var(--cor-secundaria);
}

/* ---- Navegação global (menu hambúrguer) ---- */
.nav-global {
    display: none;
    position: fixed;
    top: 60px;
    left: 10px;
    background-color: white;
    border: 2px solid var(--cor-secundaria);
    border-radius: 8px;
    z-index: 1000;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

.nav-global.ativo { display: block; }

.nav-global ul { list-style: none; padding: 10px; margin: 0; }
.nav-global ul li { padding: 10px 20px; border-bottom: 1px solid #eee; }
.nav-global ul li:last-child { border-bottom: none; }
.nav-global ul li a {
    text-decoration: none;
    color: #333;
    font-family: var(--fonte-titulo);
    font-weight: bold;
}

.menu-toggle {
    position: fixed;
    top: 15px;
    left: 15px;
    font-size: 24px;
    background: var(--cor-secundaria);
    color: white;
    border: none;
    padding: 5px 12px;
    cursor: pointer;
    border-radius: 5px;
    z-index: 1001;
}

/* ============================================================
   RESPONSIVIDADE MOBILE
   ============================================================ */

/* ---- Prevenção global de overflow horizontal ---- */
html, body {
    overflow-x: hidden;
    max-width: 100%;
}

.conteudo-principal,
.secao-aula,
.passo-teoria,
.questao,
.resolucao-bloco,
.gabarito-resolucao,
.resumo-conteudo,
.card,
.indice-coluna {
    overflow-wrap: break-word;
    word-wrap: break-word;
    word-break: break-word;
}

/* ---- MathJax: fórmulas LaTeX longas com scroll horizontal ---- */
mjx-container {
    max-width: 100% !important;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
}

mjx-container[display="true"],
mjx-container[jax="CHTML"][display="true"] {
    display: block !important;
    margin: 1em auto !important;
    padding: 0.5em 0;
    text-align: center;
}

/* Faz parágrafos centralizados de fórmulas display funcionarem corretamente */
p:has(> mjx-container[display="true"]) {
    overflow-x: auto;
    overflow-y: hidden;
    max-width: 100%;
}

/* ---- Imagens e figuras ---- */
img, svg, figure, .figura-aula {
    max-width: 100%;
    height: auto;
}

/* ---- Tabelas com scroll horizontal em telas estreitas ---- */
.tabela-wrapper, .table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* ---- Tablet (≤ 900px) ---- */
@media (max-width: 900px) {
    .container { flex-direction: column; width: 95%; }
    .menu-lateral { order: -1; position: static; max-width: 100%; margin-bottom: 20px; max-height: none; }
    .menu-lateral ul { display: flex; flex-wrap: wrap; gap: 10px; }
    .menu-lateral li { width: calc(50% - 5px); }
    header h1 { font-size: 1.8em; }

    .indice-aulas-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }
    .indice-coluna ul { max-height: 380px; }
}

/* ---- Smartphone (≤ 600px) ---- */
@media (max-width: 600px) {
    body { font-size: 15px; }

    header { padding: 18px 4%; }
    header h1 { font-size: 1.4em; line-height: 1.2; }
    header p { font-size: 0.95em; }

    .container { width: 100%; margin: 10px auto; padding: 0 8px; gap: 14px; }
    .conteudo-principal { padding: 16px 12px; border-radius: 6px; }
    .secao-aula { padding: 14px 10px; margin-bottom: 28px; }

    .passo-teoria { padding-bottom: 16px; margin-bottom: 18px; }
    .resumo-conteudo { padding: 12px; }
    .questao { padding: 12px 10px; }
    .resolucao-bloco, .gabarito-resolucao { padding: 10px; }

    h1 { font-size: 1.5em; }
    h2 { font-size: 1.3em; }
    h3 { font-size: 1.1em; }
    h4 { font-size: 1em; }

    /* Botão de slides: passa para abaixo do header em mobile */
    #btn-slides {
        position: static !important;
        display: block;
        margin: 14px auto 0;
        width: fit-content;
        font-size: 0.9em;
    }

    /* Fórmulas em destaque: encolher e permitir scroll */
    .destaque-formula {
        padding: 10px 8px;
        font-size: 0.95em;
        margin: 10px 0;
        overflow-x: auto;
    }

    /* MathJax mobile: reduzir um pouco para evitar transbordamento */
    mjx-container[display="true"] {
        font-size: 95% !important;
        margin: 0.8em 0 !important;
    }

    /* Tabelas: scroll horizontal forçado */
    table {
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        white-space: nowrap;
        font-size: 0.9em;
    }
    table th, table td { padding: 6px 8px; }

    /* Cards de aplicação ocupam linha cheia */
    .cards-aplicacao { grid-template-columns: 1fr; gap: 12px; }
    .card { padding: 14px; }

    /* Figuras */
    .figura-aula { margin: 18px auto; max-width: 100%; }
    .figura-aula img { max-width: 100%; }

    /* Menu hambúrguer: posicionamento ajustado */
    .menu-toggle { top: 10px; left: 10px; padding: 4px 10px; font-size: 20px; }
    .nav-global { top: 50px; left: 6px; right: 6px; max-width: calc(100% - 12px); }

    /* Menu lateral em mobile: 2 colunas compactas para o menu interno de âncoras */
    .menu-lateral { padding: 14px 10px; }
    .menu-lateral h2 { font-size: 1.05em; }
    .menu-lateral a { padding: 6px 8px; font-size: 0.85em; }

    /* Índice de aulas: ajustes finos */
    .indice-aulas-titulo { font-size: 1.4em; }
    .indice-coluna { padding: 18px 14px; }
    .indice-coluna ul { max-height: 320px; }

    /* Cards de seleção da home */
    .card-disciplina { padding: 28px 16px; }
    .icon-exatas { font-size: 3em; }
}

/* ---- Smartphone pequeno (≤ 380px) ---- */
@media (max-width: 380px) {
    .conteudo-principal { padding: 12px 8px; }
    .secao-aula { padding: 10px 6px; }
    header h1 { font-size: 1.2em; }
    mjx-container[display="true"] { font-size: 88% !important; }
}

/* ============================================================
   MODO SLIDES (apresentação tela cheia)
   ============================================================ */
body.modo-slides { overflow: hidden; background-color: #1a1a1a; }
body.modo-slides .menu-lateral,
body.modo-slides header,
body.modo-slides .menu-toggle,
body.modo-slides #btn-slides { display: none !important; }

.slide-ativo {
    display: flex !important;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    position: fixed;
    top: 0; left: 0;
    width: 100vw;
    height: calc(100vh - 70px);
    background: #ffffff;
    padding: 40px;
    z-index: 999;
    overflow-y: auto !important;
    box-sizing: border-box;
    text-align: center;
}

.slide-ativo h3 { text-align: center; margin-top: 0; }

.slide-ativo h4,
.slide-ativo p,
.slide-ativo ul,
.slide-ativo .resolucao-bloco,
.slide-ativo figure {
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    text-align: left;
}

.slide-ativo .destaque-formula {
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.slide-ativo .btn-gabarito {
    display: block;
    margin: 20px auto;
    width: fit-content;
    min-width: 300px;
}

.slide-ativo .questao { text-align: center; }

.slide-ativo .questao p,
.slide-ativo .questao .gabarito-resolucao,
.slide-ativo .questao .resolucao-bloco {
    text-align: left;
    margin-left: auto;
    margin-right: auto;
}

.slide-ativo .figura-aula img {
    max-height: 50vh;
    width: auto;
    display: block;
    margin: 20px auto;
}

body.modo-slides .slide-ativo .gabarito-resolucao,
body.modo-slides .slide-ativo .resolucao-bloco {
    max-width: 800px;
    margin-left: auto !important;
    margin-right: auto !important;
    text-align: left;
}

body.modo-slides .slide-ativo.aplicacoes-reais {
    display: flex !important;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: white !important;
}

body.modo-slides .slide-ativo .cards-aplicacao {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    max-width: 1000px;
}

body.modo-slides .slide-ativo .card {
    width: 280px;
    margin: 10px;
    text-align: left;
}

body.modo-slides .slide-ativo .card h4 {
    font-size: 1.4rem;
    margin-top: 0;
}

body.modo-slides .slide-ativo.simulacao-interativa {
    background-color: white !important;
    border: none !important;
    box-shadow: none !important;
    display: flex !important;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: calc(100vh - 70px);
}

.controles-slides {
    position: fixed;
    bottom: 0; left: 0;
    width: 100%; height: 70px;
    background: #2c3e50;
    color: white;
    display: none;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    z-index: 1001;
    box-sizing: border-box;
}

body.modo-slides .controles-slides { display: flex; }

.info-lateral {
    flex: 1;
    font-family: var(--fonte-titulo);
    font-size: 0.9rem;
    color: #bdc3c7;
}

.botoes-centrais {
    display: flex;
    align-items: center;
    gap: 15px;
    justify-content: center;
    flex: 2;
}

.btn-nav {
    padding: 10px 20px;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
}

#contador-slide {
    font-family: var(--fonte-titulo);
    min-width: 60px;
    text-align: center;
}

#btn-slides {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    padding: 10px;
    cursor: pointer;
    background: #e67e22;
    color: white;
    border: none;
    border-radius: 5px;
    font-weight: bold;
}