/* One <style> block, lifted in place. Separate per block: merging
   blocks changes which rule wins. */

* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }
        
        .container {
            background: white;
            border-radius: 20px;
            box-shadow: 0 20px 60px rgba(0,0,0,0.3);
            padding: 40px;
            max-width: 500px;
            width: 100%;
        }
        
        h1 {
            color: #333;
            margin-bottom: 10px;
            text-align: center;
        }
        
        .subtitle {
            color: #666;
            text-align: center;
            margin-bottom: 30px;
            font-size: 14px;
        }
        
        .upload-area {
            border: 2px dashed #667eea;
            border-radius: 10px;
            padding: 40px;
            text-align: center;
            transition: all 0.3s ease;
            cursor: pointer;
            background: #f8f9ff;
        }
        
        .upload-area:hover,
        .upload-area.drag-over {
            background: #e8ebff;
            border-color: #764ba2;
        }
        
        .upload-icon {
            font-size: 48px;
            color: #667eea;
            margin-bottom: 20px;
        }
        
        .upload-text {
            color: #333;
            font-size: 16px;
            margin-bottom: 10px;
        }
        
        .upload-hint {
            color: #999;
            font-size: 12px;
        }
        
        input[type="file"] {
            display: none;
        }
        
        .file-info {
            margin-top: 20px;
            padding: 15px;
            background: #f5f5f5;
            border-radius: 8px;
            display: none;
        }
        
        .file-info.active {
            display: block;
        }
        
        .file-name {
            color: #333;
            font-weight: 600;
            margin-bottom: 5px;
        }
        
        .file-size {
            color: #666;
            font-size: 14px;
        }
        
        .submit-btn {
            width: 100%;
            padding: 15px;
            margin-top: 20px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            border-radius: 10px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.2s;
        }
        
        .submit-btn:hover {
            transform: translateY(-2px);
        }
        
        .submit-btn:disabled {
            opacity: 0.6;
            cursor: not-allowed;
        }
        
        .message {
            padding: 15px;
            border-radius: 8px;
            margin-bottom: 20px;
            text-align: center;
        }
        
        .message.success {
            background: #d4edda;
            color: #155724;
            border: 1px solid #c3e6cb;
        }
        
        .message.error {
            background: #f8d7da;
            color: #721c24;
            border: 1px solid #f5c6cb;
        }
        
        .features {
            margin-top: 30px;
            padding-top: 30px;
            border-top: 1px solid #eee;
        }
        
        .feature {
            display: flex;
            align-items: center;
            margin-bottom: 15px;
        }
        
        .feature-icon {
            width: 24px;
            height: 24px;
            margin-right: 10px;
            color: #667eea;
        }
        
        .feature-text {
            color: #666;
            font-size: 14px;
        }
        
        .progress-bar {
            display: none;
            height: 4px;
            background: #f0f0f0;
            border-radius: 2px;
            overflow: hidden;
            margin-top: 20px;
        }
        
        .progress-bar.active {
            display: block;
        }
        
        .progress-fill {
            height: 100%;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            width: 0%;
            transition: width 0.3s ease;
        }
        
        .upload-options {
            margin-top: 30px;
            padding: 20px;
            background: #f8f9ff;
            border-radius: 10px;
            border: 1px solid #e8ebff;
        }
        
        .option-group {
            margin-bottom: 20px;
        }
        
        .option-group label {
            display: block;
            color: #333;
            font-weight: 600;
            margin-bottom: 8px;
            font-size: 14px;
        }
        
        .option-group input[type="password"],
        .option-group input[type="text"] {
            width: 100%;
            padding: 10px;
            border: 2px solid #e8ebff;
            border-radius: 8px;
            font-size: 14px;
            transition: border-color 0.3s;
        }
        
        .option-group input:focus {
            outline: none;
            border-color: #667eea;
        }
        
        .option-group small {
            display: block;
            color: #999;
            font-size: 12px;
            margin-top: 5px;
        }