import streamlit as st
import numpy as np

st.set_page_config(page_title="Advanced Calculator", page_icon="🧮")

st.title("🧮 Advanced Calculator")

# Layout
col1, col2 = st.columns(2)

with col1:
    num1 = st.number_input("Enter first number", format="%.5f", step=1.0)

with col2:
    num2 = st.number_input("Enter second number (if needed)", format="%.5f", step=1.0)

# Operation selection
operation = st.selectbox(
    "Choose an operation",
    [
        "Add", "Subtract", "Multiply", "Divide",
        "Power", "Modulo", "Square Root", "Logarithm",
        "Sine", "Cosine", "Tangent"
    ]
)

# Perform calculation
result = None

if st.button("Calculate"):
    try:
        if operation == "Add":
            result = num1 + num2
        elif operation == "Subtract":
            result = num1 - num2
        elif operation == "Multiply":
            result = num1 * num2
        elif operation == "Divide":
            if num2 != 0:
                result = num1 / num2
            else:
                st.error("Cannot divide by zero.")
        elif operation == "Power":
            result = np.power(num1, num2)
        elif operation == "Modulo":
            result = num1 % num2
        elif operation == "Square Root":
            if num1 >= 0:
                result = np.sqrt(num1)
            else:
                st.error("Cannot take square root of a negative number.")
        elif operation == "Logarithm":
            if num1 > 0:
                result = np.log(num1)
            else:
                st.error("Logarithm undefined for non-positive values.")
        elif operation == "Sine":
            result = np.sin(np.radians(num1))
        elif operation == "Cosine":
            result = np.cos(np.radians(num1))
        elif operation == "Tangent":
            result = np.tan(np.radians(num1))
    except Exception as e:
        st.error(f"An error occurred: {e}")

# Display result
if result is not None:
    st.success(f"Result: {result}")