:root {
    --cor-primaria: #0A2342;
    --cor-primaria-hover: #103A6B;
    --cor-acento: #FFB81C;
    --cor-acento-hover: #E0A114;
    --cor-texto-escuro: #2c3e50;
    --cor-texto-claro: #FFFFFF;
    --cor-texto-base: #333;
    --cor-fundo-geral: #f4f7f9;
    --cor-fundo-secao: #ffffff;
    --cor-fundo-secao-destaque: #ecf0f1;
    --cor-borda-sutil: #e0e0e0;
    --gradiente-padrao: linear-gradient(135deg, var(--cor-primaria), #0d2f5b, #ffcb4e);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--cor-primaria);
    background-image: var(--gradiente-padrao);
    color: var(--cor-texto-base);
    line-height: 1.6;
    background-attachment: fixed;
}

main {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 10px;
    width: 100%;
    box-sizing: border-box;
    /* Garante que o rodapé fique embaixo */
    min-height: calc(100vh - 350px); 
}

h1, h2, h3, h4 {
    color: var(--cor-texto-escuro);
    text-align: center;
}

.cabecalho-container {
    width: 100%;
    padding: 0;
    box-shadow: 0 4px 10px rgba(0,0,0,0.5);
}

.bloco-identidade {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

.logo-and-title {
    background: var(--gradiente-padrao);
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
    padding: 20px 15px;
    box-sizing: border-box;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.logo-and-title .logo-img {
    max-height: 80px;
    width: auto;
    border-radius: 50%;
}

.logo-and-title h1 {
    color: var(--cor-texto-claro);
    font-size: 1.5em;
    margin: 0;
    text-shadow: 1px 1px 3px black;
}

.bloco-navegacao {
    background: var(--gradiente-padrao);
    width: 100%;
    padding: 12px;
    box-sizing: border-box;
}

.nav-primary ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.nav-primary a {
    text-decoration: none;
    color: var(--cor-texto-claro);
    font-weight: bold;
    padding: 10px 20px;
    border-radius: 8px;
    transition: background-color 0.3s ease, color 0.3s ease, box-shadow 0.3s ease;
    background-color: var(--cor-primaria-hover);
    border: 1px solid black;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.nav-primary a:hover {
    background-color: var(--cor-acento);
    color: var(--cor-primaria);
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
}

.accordion-container {
    width: 100%;
    max-width: 900px;
    margin: 30px auto;
    border-radius: 12px;
    box-shadow: 0 6px 15px rgba(0,0,0,0.4);
    overflow: hidden; /* Para manter o border-radius nos itens internos */
}

.accordion-item {
    border-bottom: 1px solid var(--cor-borda-sutil);
}
.accordion-item:last-child {
    border-bottom: none;
}

.accordion-trigger {
    width: 100%;
    padding: 20px 25px;
    background-color: var(--cor-fundo-secao); /* Branco (como os cards de exercício) */
    border: none;
    text-align: left;
    font-size: 1.4em;
    font-weight: bold;
    color: var(--cor-primaria); /* Azul escuro */
    cursor: pointer;
    transition: background-color 0.3s ease;
    position: relative;
}

.accordion-trigger:hover {
    background-color: var(--cor-fundo-secao-destaque); /* Cinza claro (como o hover dos botões) */
}

.accordion-trigger::after {
    content: '+';
    position: absolute;
    right: 25px;
    font-size: 1.5em;
    font-weight: normal;
    transition: transform 0.3s ease;
}

.accordion-trigger.active::after {
    transform: rotate(45deg);
}

.accordion-panel {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, padding 0.3s ease-out;
    background-color: var(--cor-fundo-secao-destaque); /* Cinza claro (como as explicações) */
    padding: 0 25px;
}

.accordion-panel ul {
    list-style: none;
    padding: 0;
    margin: 20px 0; /* Espaçamento interno quando o painel estiver aberto */
}

.exercise-link {
    display: block;
    padding: 12px 20px;
    margin-bottom: 8px;
    background-color: var(--cor-fundo-secao); /* Fundo branco */
    color: var(--cor-texto-escuro);
    text-decoration: none;
    border-radius: 8px;
    border: 1px solid var(--cor-borda-sutil);
    font-weight: 500;
    transition: all 0.2s ease;
}

.exercise-link:hover {
    background-color: var(--cor-acento-hover); /* Amarelo no hover */
    border-color: var(--cor-acento);
    color: var(--cor-primaria);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.site-footer {
    width: 100%;
    background-image: var(--gradiente-padrao);
    color: var(--cor-texto-claro);
    text-align: center;
    padding: 40px 20px;
    margin-top: 30px;
    box-sizing: border-box;
}

.site-footer p {
    margin: 5px 0;
    font-size: 0.9em;
}

.social-media-links h4 {
    color: var(--cor-texto-claro);
    background: none;
}

.social-media-links a {
    display: inline-block;
    margin: 0 12px;
    transition: transform 0.2s ease;
}

.social-media-links a:hover {
    transform: scale(1.1);
}

.social-media-links img {
    width: 32px;
    height: 32px;
}

@media (max-width: 800px) {
    .logo-and-title h1 { 
        font-size: 1.2em; 
    }
    .nav-primary a { 
        font-size: 0.8em; 
        padding: 8px 10px;
    }
    .accordion-trigger {
        font-size: 1.1em;
        padding: 15px 20px;
    }
    .accordion-trigger::after {
        right: 20px;
    }
}