body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.card {
    border-radius: 15px;
    border: none;
}

.card-body {
    padding: 2rem;
}

.form-control {
    border-radius: 8px;
    padding: 0.75rem;
    border: 1px solid #dee2e6;
    transition: border-color 0.2s ease-in-out;
}

.form-control:focus {
    border-color: #0d6efd;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

.input-group-text {
    background-color: #f8f9fa;
    border-right: none;
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
    border-top-left-radius: 8px;
    border-bottom-left-radius: 8px;
    padding: 0.75rem;
}

.input-group .form-control {
    border-left: none;
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

.input-group:focus-within .input-group-text {
    border-color: #0d6efd;
}

.currency-input {
    text-align: right;
}

.btn-primary {
    padding: 0.75rem;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.2s ease-in-out;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.table {
    font-size: 0.9rem;
}

.table th {
    font-weight: 600;
    background-color: #f8f9fa;
}

#resultsChart {
    min-height: 300px;
}

@media (max-width: 768px) {
    .card-body {
        padding: 1.5rem;
    }
    
    .table {
        font-size: 0.8rem;
    }
}