body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
    color: #333;
}

.container {
    max-width: 900px;
}

.card {
    border: none;
    border-radius: 0.75rem;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.08);
}

.form-control {
    border-radius: 0.5rem;
}

.btn {
    border-radius: 0.5rem;
    font-weight: bold;
}

.btn-primary {
    background-color: #007bff;
    border-color: #007bff;
}

.btn-primary:hover {
    background-color: #0056b3;
    border-color: #0056b3;
}

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

.btn-secondary:hover {
    background-color: #5a6268;
    border-color: #5a6268;
}

.lead {
    font-size: 1.25rem;
    font-weight: 300;
}

.accordion-button:not(.collapsed) {
    color: #007bff;
    background-color: #e7f1ff;
    box-shadow: inset 0 -1px 0 rgba(0,0,0,.125);
}

.accordion-button:focus {
    box-shadow: 0 0 0 0.25rem rgba(0, 123, 255, 0.25);
}

.accordion-body {
    background-color: #fff;
}

#wordCloudContainer {
    min-height: 200px;
    border: 1px solid #dee2e6;
    border-radius: 0.5rem;
    padding: 15px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

.word-item {
    display: inline-block;
    font-weight: bold;
    white-space: nowrap;
}