.copyright-attestation-container {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    max-width: 600px;
    margin: 40px auto;
    padding: 30px;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    background-color: #ffffff;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

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

.ca-header h2 {
    margin: 0 0 10px 0;
    color: #1a202c;
    font-size: 24px;
}

.ca-header p {
    margin: 0;
    color: #718096;
    font-size: 14px;
}

.ca-upload-section, .ca-lookup-section {
    padding: 20px;
    background-color: #f8fafc;
    border-radius: 8px;
    border: 1px solid #edf2f7;
}

.ca-upload-section h3, .ca-lookup-section h3 {
    margin: 0 0 5px 0;
    color: #2d3748;
    font-size: 18px;
}

.ca-description {
    margin: 0 0 15px 0;
    color: #718096;
    font-size: 13px;
}

.ca-input-group {
    margin-bottom: 15px;
}

.ca-upload-section input[type="file"] {
    width: 100%;
    padding: 8px;
    background: #fff;
    border: 1px dashed #cbd5e0;
    border-radius: 4px;
}

.ca-lookup-section input[type="text"] {
    width: 100%;
    padding: 12px;
    border: 1px solid #cbd5e0;
    border-radius: 6px;
    font-size: 16px;
    box-sizing: border-box;
}

.ca-upload-section input[type="submit"],
.ca-lookup-section input[type="submit"] {
    width: 100%;
    background-color: #3182ce;
    color: white;
    padding: 12px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: background-color 0.2s;
}

.ca-upload-section input[type="submit"]:hover,
.ca-lookup-section input[type="submit"]:hover {
    background-color: #2b6cb0;
}

.ca-divider {
    text-align: center;
    margin: 25px 0;
    position: relative;
}

.ca-divider:before {
    content: "";
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: #e2e8f0;
    z-index: 1;
}

.ca-divider span {
    background: #fff;
    padding: 0 15px;
    position: relative;
    z-index: 2;
    color: #a0aec0;
    font-size: 12px;
    font-weight: bold;
}

#ca-upload-message, #ca-lookup-message {
    margin-top: 15px;
    padding: 12px;
    border-radius: 6px;
    font-size: 14px;
    line-height: 1.5;
    display: none;
}

#ca-upload-message.success, #ca-lookup-message.success {
    display: block;
    background-color: #f0fff4;
    color: #22543d;
    border: 1px solid #c6f6d5;
}

#ca-upload-message.error, #ca-lookup-message.error {
    display: block;
    background-color: #fff5f5;
    color: #822727;
    border: 1px solid #fed7d7;
}

.ca-unique-id-display {
    display: block;
    margin-top: 10px;
    font-family: monospace;
    font-size: 18px;
    font-weight: bold;
    color: #2b6cb0;
    background: #ebf8ff;
    padding: 10px;
    border-radius: 4px;
    text-align: center;
}