body {
    background-color: #f8f9fa;
}
.card {
    margin-top: 50px;
}
.card-header h3 {
    font-size: 1.5rem;
    font-weight: bold;
}
.form-floating {
    position: relative;
}
.form-floating label {
    position: absolute;
    top: 0;
    left: 1rem;
    height: 100%;
    padding: 1rem;
    pointer-events: none;
    transform-origin: 0 0;
    transition: all 0.1s ease-in-out;
    font-size: 1rem;
    color: #6c757d;
}
.form-floating input, 
.form-floating select {
    height: calc(3.5rem + 2px);
    padding: 1rem;
}
.form-floating input:focus, 
.form-floating select:focus {
    outline: none;
    border-color: #86b7fe;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}
.form-floating input:not(:placeholder-shown)~label,
.form-floating select:not(:placeholder-shown)~label {
    transform: scale(0.85) translateY(-1rem) translateX(0.15rem);
    color: #495057;
}
.text-danger {
    font-weight: bold;
}