* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

header {
    text-align: center;
    margin-bottom: 30px;
}

header h1 {
    color: #4a6cf7;
    margin-bottom: 10px;
}

.upload-section, .download-section, .info-section {
    margin-bottom: 30px;
}

h2, h3 {
    margin-bottom: 15px;
    color: #333;
}

.drop-zone {
    border: 2px dashed #4a6cf7;
    border-radius: 5px;
    padding: 30px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    margin-bottom: 20px;
}

.drop-zone:hover {
    background-color: #f0f4ff;
}

.drop-zone__prompt {
    color: #666;
    font-size: 18px;
}

.drop-zone__input {
    display: none;
}

.progress-container {
    margin-bottom: 20px;
}

.progress-bar {
    width: 100%;
    height: 20px;
    background-color: #f0f0f0;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress {
    height: 100%;
    background-color: #4a6cf7;
    width: 0%;
    transition: width 0.3s;
}

.btn {
    background-color: #4a6cf7;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: #3a5cd8;
}

.btn:disabled {
    background-color: #cccccc;
    cursor: not-allowed;
}

.link-container {
    display: flex;
    margin: 20px 0;
}

#downloadLink {
    flex: 1;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px 0 0 5px;
    font-size: 14px;
}

#copyButton {
    border-radius: 0 5px 5px 0;
}

.info-section {
    background-color: #f9f9f9;
    padding: 20px;
    border-radius: 5px;
}

.info-section ol {
    margin-left: 20px;
    margin-bottom: 15px;
}

footer {
    text-align: center;
    margin-top: 30px;
    color: #666;
    font-size: 14px;
}

@media (max-width: 600px) {
    .container {
        padding: 15px;
    }
    
    .link-container {
        flex-direction: column;
    }
    
    #downloadLink {
        border-radius: 5px 5px 0 0;
        margin-bottom: 5px;
    }
    
    #copyButton {
        border-radius: 0 0 5px 5px;
    }
}