body {
    background-color: #f8f9fa;
}
.card {
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
.table td, .table th {
    vertical-align: middle;
}
#tripsTable input {
    min-width: 100px;
}
#tripsTable input[type="date"] {
    min-width: 130px;
}
#tripsTable input[type="time"] {
    min-width: 100px;
}