body {
    background: linear-gradient(to right, #f8f9fa, #e9ecef);
}

.card {
    border: none;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

#preview, #convertedPreview {
    background-color: #e9ecef;
    position: relative;
    overflow: hidden;
}

#preview canvas, #convertedPreview canvas {
    display: block; /* To remove bottom margin */
}

.navbar-brand {
    font-weight: bold;
}

#downloadLink {
    font-weight: bold;
}

.form-control, .form-select {
    min-height: 48px;
}

.btn {
    min-height: 48px;
    font-weight: 600;
}