body {
    background: linear-gradient(to right, rgba(30, 58, 138, 0.5), rgba(233, 30, 99, 0.5));
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-family: 'Prompt', sans-serif;
}

h2 {
    color: #1E3A8A;
    font-weight: bold;
    text-shadow: 1px 1px 2px #ccc;
}

h4 {
    color: #E91E63;
    font-weight: bold;
    text-shadow: 1px 1px 2px #ccc;
}

.card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    width: 100%;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    color: #000;
}

.btn-primary {
    background-color: #1E3A8A;
    border: none;
    border-radius: 10px;
}

.btn-primary:hover {
    background-color: #162d6b;
}

.btn-secondary {
    background-color: #6c757d;
    border-radius: 10px;
}

input.form-control {
    border-radius: 10px;
    text-align: center;
    font-size: 1.2rem;
}

.table th, .table td {
    text-align: center;
    vertical-align: middle;
    white-space: nowrap;
    font-size: 0.9rem;
}

.table thead {
    background-color: #1E3A8A;
    color: white;
}

.table thead th {
    position: sticky;
    top: 0;
    z-index: 10;
}

.table-responsive {
    max-height: 600px;
    overflow: auto;
}