body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #ffffff;
    color: #000000;
}

.container {
    max-width: 800px;
    margin: 0 auto;
}

h1 {
    text-align: center;
    margin-bottom: 10px;
}

.subtitle {
    text-align: center;
    margin-bottom: 30px;
    color: #666666;
}

.converter {
    border: 1px solid #000000;
    padding: 20px;
}

.drop-zone {
    border: 1px dashed #000000;
    padding: 40px;
    text-align: center;
    margin-bottom: 20px;
    cursor: pointer;
}

.upload-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 10px;
}

.output-section {
    margin-bottom: 20px;
}

textarea {
    width: 100%;
    height: 100px;
    resize: vertical;
    margin-bottom: 10px;
    padding: 10px;
    border: 1px solid #000000;
    border-radius: 0px;
    box-sizing: border-box;
}

.copy-btn {
    background-color: #ffffff;
    color: #000000;
    border: 1px solid #000000;
    padding: 5px 10px;
    cursor: pointer;
    border-radius: 0px;
}

.copy-btn:hover {
    background-color: #f0f0f0;
}