body,
.corpo-pagina {
    background: linear-gradient(135deg, #f0f2f5, #e6e6ff 80%, #1a1a40 100%);
    min-height: 100vh;
    color: #1a1a40;
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
}

.texto-principal {
    color: #1a1a40;
}

.menu-bar {
    background: linear-gradient(90deg, #1a1a40 60%, #3b3b80 100%);
    color: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.07);
    margin-bottom: 1.5rem;
    width: 100%;
}

.menu-container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    max-width: 1200px;
    margin: 0 auto;
}

.logo-site {
    font-size: 1.5rem;
    font-weight: bold;
    color: #3b3b80;
    text-decoration: none;
}

.menu-desktop {
    display: flex;
    gap: 1.5rem;
}

.menu-mobile-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #fff;
    cursor: pointer;
    display: none;
}

.menu-link {
    color: #e6e6ff;
    text-decoration: none;
    margin-right: 1rem;
    transition: color 0.2s;
    font-weight: 500;
}
.menu-link:hover {
    color: #ffbe0b;
}

.menu-mobile {
    display: none;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 1rem;
}

@media (max-width: 768px) {
    .menu-desktop {
        display: none;
    }
    .menu-mobile-btn {
        display: block;
    }
    .menu-mobile {
        display: flex;
    }
}

.main-flex {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 70vh;
}

.painel-lateral.hidden {
    display: none !important;
}

.principal-container {
    max-width: 400px;
    margin: 0 auto;
    padding: 1.5rem;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.07);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.titulo-principal {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 1rem;
    text-align: center;
    color: #3b3b80;
}

.label-tipo, .label-tensao {
    color: #1a1a40;
    margin-bottom: 0.5rem;
    display: block;
    font-weight: 500;
}

.select-tipo, .input-tensao {
    width: 100%;
    padding: 0.5rem;
    margin-bottom: 1rem;
    background: #f9f9f9;
    color: #1a1a40;
    border-radius: 5px;
    border: 1px solid #ccc;
    font-size: 1rem;
}

.btn-calcular {
    width: 100%;
    background: #3b3b80;
    color: #fff;
    font-weight: bold;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    border: none;
    margin-bottom: 1rem;
    cursor: pointer;
    transition: background 0.2s;
    font-size: 1rem;
}
.btn-calcular:hover {
    background: #1a1a40;
}

.resultado {
    font-size: 1.125rem;
    font-weight: bold;
    margin-bottom: 1rem;
    text-align: center;
    color: #3b3b80;
}

.descricao-btn-container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.btn-descricao {
    background: #3b3b80;
    color: #fff;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    border: none;
    margin: 1rem 0;
    width: 100%;
    max-width: 400px;
    cursor: pointer;
    font-weight: bold;
    transition: background 0.2s;
    font-size: 1rem;
}
.btn-descricao:hover {
    background: #1a1a40;
}

.descricao-container {
    max-width: 400px;
    margin: 0 auto;
    padding: 1.5rem;
    background: #f9f9f9;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.07);
    position: relative;
}

.btn-fechar {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: #3b3b80;
    color: #fff;
    border: none;
    border-radius: 5px;
    padding: 0.25rem 0.75rem;
    cursor: pointer;
    transition: background 0.2s;
    font-size: 1rem;
}
.btn-fechar:hover {
    background: #1a1a40;
}

.descricao-texto {
    margin-bottom: 1rem;
    color: #1a1a40;
}

.btn-tabela {
    width: 100%;
    background: #3b3b80;
    color: #fff;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    border: none;
    margin-bottom: 1rem;
    cursor: pointer;
    font-weight: bold;
    transition: background 0.2s;
    font-size: 1rem;
}
.btn-tabela:hover {
    background: #1a1a40;
}

.tabela-container {
    overflow-x: auto;
}

.titulo-tabela {
    font-size: 1.25rem;
    font-weight: bold;
    color: #3b3b80;
    margin-bottom: 0.75rem;
}

.subtitulo-tabela {
    font-size: 1rem;
    font-weight: bold;
    color: #1a1a40;
    margin-bottom: 0.5rem;
}

.tabela-termopar {
    width: 100%;
    background: #fff;
    color: #1a1a40;
    border-radius: 5px;
    font-size: 0.875rem;
    margin-bottom: 1rem;
    border: 1px solid #ccc;
}
.tabela-termopar th, .tabela-termopar td {
    padding: 0.5rem;
    text-align: center;
}
.tabela-termopar th {
    background: #e6e6ff;
    color: #3b3b80;
}
.tabela-termopar tr:nth-child(even) {
    background: #f0f2f5;
}

/* Painel lateral */
.painel-lateral {
    width: 100%;
    margin-top: 2rem;
}
.painel-lateral.hidden {
    display: none !important;
}
@media (min-width: 768px) {
    .main-flex.painel-ativo {
        flex-direction: row;
        align-items: flex-start;
        justify-content: center;
    }
    .principal-container {
        align-items: stretch;
        justify-content: flex-start;
        margin-left: 0;
        margin-right: 0;
    }
    .painel-lateral {
        margin-left: 2rem;
        margin-top: 0;
        max-width: 400px;
        min-width: 320px;
    }
}

/* Artigos */
.code-snippet {
    background-color: #2d2d2d;
    color: #f4f4f9;
    padding: 1rem;
    border-radius: 8px;
    font-family: 'Courier New', Courier, monospace;
    overflow-x: auto;
}

.equation {
    background-color: #f9f9f9;
    color: #1a1a40;
    padding: 10px;
    border-radius: 5px;
    text-align: center;
    font-family: 'Times New Roman', Times, serif;
    font-size: 1.1em;
    margin: 1rem 0;
    border: 1px solid #ccc;
}

.highlight {
    background-color: #e6e6ff;
    border-left: 5px solid #3b3b80;
    border-radius: 5px;
    padding: 15px;
    color: #1a1a40;
}

.img-diagram {
    display: block;
    margin: 20px auto;
    border-radius: 5px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.07);
    max-width: 350px;
    width: 100%;
}

.footer {
    background-color: #1a1a40;
    color: #fff;
    border-top: 1px solid #3b3b80;
    text-align: center;
    padding: 2rem 0 1rem 0;
    margin-top: 5%;
    border-radius: 0 0 10px 10px;
    font-size: 1rem;
}

.hidden {
    display: none !important;
}