body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f7f7f7;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

h1 {
    text-align: center;
    margin-bottom: 30px;
    color: #2c3e50;
}

.app-container {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
}

.input-panel, .output-panel {
    flex: 1;
    min-width: 300px;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 20px;
}

h3 {
    margin-top: 0;
    margin-bottom: 15px;
    color: #2c3e50;
}

.upload-area {
    border: 2px dashed #ccc;
    border-radius: 5px;
    padding: 20px;
    text-align: center;
    cursor: pointer;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.upload-area:hover {
    border-color: #2e86de;
}

.dragover {
    border-color: #2e86de;
    background-color: rgba(46, 134, 222, 0.05);
}

.upload-prompt {
    color: #666;
}

.small {
    font-size: 0.8em;
    color: #999;
}

.settings {
    margin-top: 20px;
}

.setting {
    margin-bottom: 10px;
}

label {
    display: block;
    margin-bottom: 5px;
}

input[type="number"], input[type="range"] {
    width: 100%;
    padding: 5px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.result-area {
    border: 2px solid #eee;
    border-radius: 5px;
    padding: 20px;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    text-align: center;
    color: #666;
}

/* Spinner */
.spinner {
    border: 4px solid rgba(0, 0, 0, 0.1);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border-left-color: #2e86de;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }
}