body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

header {
    margin-bottom: 1rem;
}

.invalid {
    border-color: red;
}

nav * {
    margin: .2rem 0;
}

nav div.menu {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: .5rem;
}

nav div.reports {
    display: flex;
    flex-wrap: wrap;
    flex-basis: 1;
    /* justify-content: space-evenly; */
    gap: 0.5rem;
}
.btn-evento {
    position: relative;
    min-width: 200px;
}
.data-evento {
    position: absolute;
    font-size: xx-small;
    top: -2px;
    left: 4px;
}

#grupo-matricula>label {
    display: block;
}

#rnx-ficheiros-anexados > div {
    margin-bottom: .3rem;
    display: flex;
    justify-content: space-between;
}

dialog::backdrop {
    background: rgba(0, 0, 0, 0.65);
}
dialog > div {
    max-width: 280px;
}
dialog img {
    display: block;
    width: 100%;
    margin-bottom: 1rem;
}
dialog button {
    margin-right: 10px;
}
.btn-explained {
    visibility: collapse;
}

.btn.btn-secondary:hover + .btn-explained {
    visibility: visible;
}

.alerta {
    color: red;
    font-style: italic;
    text-align: center;
    font-size: small;
}