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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    background-color: #f5f7fa;
    color: #333;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 30px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 10px;
}

.subtitle {
    text-align: center;
    color: #7f8c8d;
    margin-bottom: 30px;
}

.upload-box {
    border: 2px dashed #3498db;
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    margin-bottom: 30px;
    background-color: #f8fafc;
    transition: all 0.3s;
}

.upload-box.highlight {
    border-color: #2980b9;
    background-color: #eaf2f8;
}

.upload-content svg {
    margin-bottom: 15px;
}

.upload-content h3 {
    margin-bottom: 10px;
    color: #2c3e50;
}

.upload-content p {
    color: #7f8c8d;
    margin-bottom: 20px;
}

#fileInput {
    display: none;
}

.browse-btn {
    display: inline-block;
    background: #3498db;
    color: #fff;
    padding: 12px 25px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    transition: background 0.3s;
    margin-bottom: 20px;
}

.browse-btn:hover {
    background: #2980b9;
}

.options {
    margin: 20px 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
}

.options label {
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
}

.verify-btn {
    display: inline-block;
    background: #2ecc71;
    color: #fff;
    padding: 12px 30px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    transition: background 0.3s;
}

.verify-btn:hover {
    background: #27ae60;
}

.verify-btn:disabled {
    background: #95a5a6;
    cursor: not-allowed;
}

.progress-container {
    margin: 30px 0;
}

.progress-bar {
    height: 20px;
    background-color: #ecf0f1;
    border-radius: 10px;
    margin-bottom: 10px;
    overflow: hidden;
}

.progress {
    height: 100%;
    background-color: #3498db;
    width: 0%;
    transition: width 0.3s;
}

.info-box {
    background-color: #f8f9fa;
    border-left: 4px solid #3498db;
    padding: 20px;
    border-radius: 0 4px 4px 0;
    margin-top: 30px;
}

.info-box h3 {
    margin-bottom: 10px;
    color: #2c3e50;
}

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

.info-box p {
    margin-bottom: 10px;
}

@media (max-width: 600px) {
    .container {
        padding: 15px;
    }
    
    .upload-box {
        padding: 20px;
    }
    
    .options {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
}