import streamlit as st
import pandas as pd
import numpy as np

# Custom CSS for styling
custom_css = """
<style>
    html, body, [data-testid="stAppViewContainer"] {
        background-image: linear-gradient(
            rgba(0, 0, 0, 0.6), 
            rgba(0, 0, 0, 0.6)
        ), 
        url("https://www.istockphoto.com/photo/tech-or-space-background-abstract-3d-illustration-gm1367865109-437999705?utm_source=pixabay&utm_medium=affiliate&utm_campaign=SRP_photo_sponsored&utm_content=https%3A%2F%2Fpixabay.com%2Fphotos%2Fsearch%2Fbackground%2520datascience%2F&utm_term=background+datascience.jpg");
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
        background-attachment: fixed;
        color: white;  /* Ensures all text is readable */
    }
    h2, h3 {
        color: #FFD700; /* Gold color for headings */
    }
    p {
        color: #FFFFFF; /* White text for paragraphs */
    }
</style>
"""

# Inject the CSS into the app
st.markdown(custom_css, unsafe_allow_html=True)
st.markdown("<h2 style='text-align: left; color: Black;'>📈What is Extensible Markup Language (XML)</h2>", unsafe_allow_html=True)
st.markdown(
    "<p style='font-size: 16px; color: White; font-style: italic;'>"
    "XML (Extensible Markup Language) is a versatile markup language used for storing and transferring data. It is designed to be easily understood by both humans and machines, making it a popular choice for data exchange across various systems. XML organizes information in a hierarchical tree structure, where elements are defined using tags that may include attributes and nested sub-elements."
    "</p>", 
    unsafe_allow_html=True
)
st.markdown(
    "<p style='font-size: 16px; color: White; font-style: italic;'>"
    "Data should be retrieved from databases, and the entire code should be structured using tags, making it a markup-based code. Every tag opened at the beginning must be properly closed with the same tag at the end of the XML file."
    "</p>", 
    unsafe_allow_html=True
)
st.markdown("<h2 style='text-align: left; color: Black;'>📈How to Read XML</h2>", unsafe_allow_html=True)
st.markdown(
    "<p style='font-size: 16px; color: White; font-style: italic;'>"
    "An XML file can be read using pandas by utilizing the function <code>pd.read_xml(&quot;file path&quot;)</code>."
    "</p>",
    unsafe_allow_html=True
)