#morse-app {
    font-family: Arial, sans-serif;
    max-width: 750px;
    margin: auto;
    padding: 20px;
    background: #fefefe;
    border-radius: 10px;
    border: 1px solid #ccc;
}
#morse-app textarea {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border-radius: 6px;
    border: 1px solid #bbb;
    font-size: 16px;
}
.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.controls button {
    flex: 1 0 30%;
    padding: 10px;
    border: none;
    background: #ddd;
    border-radius: 6px;
    cursor: pointer;
}
.controls button.active {
    background-color: #0073aa;
    color: white;
}
.sliders label {
    display: block;
    margin-top: 10px;
}
#progressContainer {
    margin-top: 15px;
    width: 100%;
    background: #e0e0e0;
    height: 12px;
    border-radius: 6px;
    overflow: hidden;
}
#progressBar {
    height: 100%;
    width: 0%;
    background: #0073aa;
    transition: width 0.3s;
}
.drop-zone {
    margin-top: 20px;
    padding: 20px;
    background: #f1f1f1;
    border: 2px dashed #999;
    border-radius: 8px;
    text-align: center;
}
@media(max-width: 600px) {
    .controls button {
        flex: 1 0 48%;
    }
}