.birth-date-controls {
    display: inline-block;
    position: relative;
    margin-left: 0.5rem;
}
.birth-date-calendar {
    position: absolute;
    top: 100%;
    right: 0;
    z-index: 1000;
    width: 18rem;
    max-width: 90vw;
    padding: 0.75rem;
    background: white;
    color: #212529;
    border: 1px solid #767676;
    border-radius: 0.25rem;
    box-shadow: 0 0.25rem 0.75rem #0003;
}
.birth-date-calendar-header {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}
.birth-date-calendar-header select { flex: 1; min-width: 0; }
.birth-date-calendar-header input { width: 5.5rem; }
.birth-date-calendar-days {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0.15rem;
    text-align: center;
    margin-bottom: 0.5rem;
}
.birth-date-calendar-days button {
    padding: 0.3rem 0;
    border: 1px solid #767676;
    border-radius: 0.2rem;
    background: white;
    color: #212529;
}
.birth-date-calendar-days button:hover,
.birth-date-calendar-days button[aria-pressed="true"] {
    background: #e2e6ea;
}