* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    /* Fonte Poppins (removendo serifa) - aproximação do estilo da imagem */
    font-family: 'Poppins', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
}
.background {
    width: 100%;
    min-height: 80vh;  
    background-color: #ecf0f3;
    gap: 30px;
}

header {
    width: 100%;
    height: 70px;
    background-color: var(--cor-principal); /* Azul escuro */
    color: white;
    display: flex;
    align-items: center;
    padding: 0 15px;
    box-shadow: 0px 2px 10px rgba(0, 0, 0, 0.1);
    margin-bottom: 10%;
}

.sidebar{
    position: fixed;

    top: 70px;      /* altura do header */
    left: 0;

    width: 300px;
    height: calc(100% - 70px);

    background: var(--cor-principal);

    z-index: 1000;
    display: grid;
    justify-content: center;
    align-items: center;
    transform: translateX(-100%);
    transition: transform .3s ease;

}

.sidebar.active{
    transform: translateX(0);
}

.overlay{
    position: fixed;
    inset: 0;

    background: rgba(0,0,0,.35);

    opacity: 0;
    visibility: hidden;

    z-index: 999;

    transition: .3s;
}

.overlay.active{
    opacity: 1;
    visibility: visible;
}

.menu-itens{
    justify-content: center;
    height: 8em;
    background-color: #ecf0f3;
    border-radius: 20px;
    border: 1px solid #c2cadb9c;
    /* Efeito de relevo suave */
    box-shadow: inset 2px 2px 5px black,
                2px 2px 5px rgba(0, 0, 0, 0.05);
    cursor: pointer;
    display: flex;
    align-items: center;
    width: 10em;
}

a {
    text-decoration: none;
}