body {
    background-color: #e9ecef;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #333;
}
.container {
    max-width: 1200px;
}
.card {
    border-radius: 12px;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
    background-color: #ffffff;
    transition: transform 0.2s;
}
.card:hover {
    transform: translateY(-5px);
}
.card-title {
    font-size: 1.75rem;
    color: #343a40;
    font-weight: 600;
}
.card-text {
    font-size: 1.25rem;
    color: #495057;
}
.total-ventas {
    color: #28a745;
    font-weight: 700;
}
.total-cambio {
    color: #28a745;
    font-weight: 700;
}
.transacciones {
    color: #007bff;
    font-weight: 600;
}
.cambio {
    color: #007bff;
    font-weight: 600;
}
.btn-primary {
    background-color: #0069d9;
    border-color: #0056b3;
    border-radius: 10px;
    font-weight: 500;
    transition: background-color 0.3s, border-color 0.3s;
}
.btn-primary:hover {
    background-color: #0056b3;
    border-color: #004085;
}
.modal-content {
    border-radius: 12px;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}
.modal-title {
    color: #343a40;
    font-weight: 600;
}
.modal-body li {
    padding: 8px 0;
    border-bottom: 1px solid #e0e0e0;
}
.modal-footer button {
    border-radius: 8px;
}
.detalle-pendientes {
    color: #ffc107;
    font-weight: 600;
}
.detalle-pagadas {
    color: #28a745;
    font-weight: 600;
}