.fessup-admin-register-wrap {
    max-width: 500px;
    margin: 40px auto;
    padding: 20px;
}

.fessup-admin-register-form {
    background: #fff;
    border: 1px solid #dcdcde;
    border-radius: 4px;
    padding: 30px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.fessup-admin-register-form h2 {
    margin-top: 0;
    margin-bottom: 10px;
    font-size: 24px;
    color: #1d2327;
}

.fessup-admin-register-desc {
    color: #666;
    font-size: 14px;
    margin-bottom: 24px;
}

.fessup-admin-register-notice {
    background: #f0f6fc;
    border: 1px solid #a7d8ea;
    border-radius: 4px;
    padding: 12px 16px;
    margin-bottom: 24px;
    color: #0073aa;
    font-size: 14px;
}

.fessup-admin-register-notice strong {
    font-weight: 600;
}

.fessup-form-group {
    margin-bottom: 20px;
}

.fessup-form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #1d2327;
    font-size: 14px;
}

.fessup-form-input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #dcdcde;
    border-radius: 4px;
    font-size: 14px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen-Sans, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
}

.fessup-form-input:focus {
    outline: none;
    border-color: #0073aa;
    box-shadow: 0 0 0 2px rgba(0, 115, 170, 0.1);
}

.fessup-form-help {
    margin-top: 6px;
    font-size: 12px;
    color: #666;
}

.fessup-submit-btn {
    width: 100%;
    padding: 10px 16px;
    background: #0073aa;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.fessup-submit-btn:hover {
    background: #005a87;
}

.fessup-submit-btn:active {
    background: #004578;
}

.fessup-submit-btn:disabled {
    background: #ccc;
    cursor: not-allowed;
}

#fessup-admin-register-message {
    margin-top: 16px;
    padding: 12px 16px;
    border-radius: 4px;
    font-size: 14px;
}

#fessup-admin-register-message.success {
    background: #f0f6fc;
    border: 1px solid #a7d8ea;
    color: #0073aa;
}

#fessup-admin-register-message.error {
    background: #fef5f1;
    border: 1px solid #f0b849;
    color: #d63638;
}

@media (max-width: 600px) {
    .fessup-admin-register-form {
        padding: 20px;
    }

    .fessup-admin-register-form h2 {
        font-size: 20px;
    }
}