app.py

import streamlit as st
from PIL import Image
import base64
import yaml
import os
import urllib.request
import tarfile
from yaml.loader import SafeLoader

# Page setup
st.set_page_config(
    layout="wide",
    page_icon="/home/ubuntu/images/opensearch_mark_default.png"
    
)

st.markdown("""
    <div id="home-page">
""", unsafe_allow_html=True)

st.markdown("""
    <style>
    /* Import Amazon Ember font */
    @import url('https://fonts.cdnfonts.com/css/amazon-ember');

    /* Global layout tweaks */
    html, body, .main {
        html, body, .main {
    background: linear-gradient(135deg, #0d0d0d 0%, #1a1a1a 30%, #102132 100%);
    height: 100vh;
    overflow: hidden;
    color: white;
    }
        font-family: 'Amazon Ember', sans-serif;
    }

    .block-container {
        padding-top: 2rem;
    }

    /* Hide Streamlit UI elements */
    #MainMenu, header, footer,
    button[title="View fullscreen"] {
        visibility: hidden;
    }

    /* Title styling */
    .title {
        font-size: 40px;
        color: #FF9900;
        font-family: 'Amazon Ember Display 500', sans-serif;
        margin-bottom: 10px;
    }

    
    .card {
    background: rgba(255, 255, 255, 0.05);  /* subtle white tint */
    backdrop-filter: blur(8px);             /* frosted glass effect */
    border-radius: 12px;
    padding: 24px 16px;
    width: 100%;
    margin: 0 auto;
    height: 350px;
    color: white;
    box-shadow: 0 0 10px rgba(0,0,0,0.3);
    transition: transform 0.2s ease, background 0.2s ease;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
}

.card:hover {
    
    transform: scale(1.06);  /* Optional: adds smooth grow effect */
    transition: all 0.3s ease-in-out;
    border: 2px solid rgba(255, 255, 255, 255);  /* white border on hover */
    
}

.card-header {
    font-size: 100px;
    margin: 20px auto 12px auto;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 60px;
    width: 60px;              /* make it a square box */
    transition: all 0.3s ease-in-out;
}


# /* Hover glow only – no background, no border, just glow */
# .card:hover .card-header {
#     box-shadow: 0 0 20px 8px rgba(228, 110, 8, 0.4);  /* soft orange glow */
#     border-radius: 50%;
# }

.card-text {
    font-size: 45px;
    font-weight: bold;
    flex-grow: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 8px;
}

.card:hover .card-text{
    opacity: 1;
    color: #e46e08;
    font-size: 48px;
    font-weight: bold;
    transform: scale(1.2);  /* Optional: adds smooth grow effect */
    transition: all 0.3s ease-in-out;
}

/* Bottom arrow */
.card-arrow {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%) scale(1);
    font-size: 22px;
    font-weight: bold;
    opacity: 0;
    transition: all 0.3s ease-in-out;
    color: #ffffff;
}
.card-description {
    font-size: 16px;
    color: #ccc;
    text-align: center;
    white-space: normal;
    line-height: 1.4;
    margin-top: auto;
    padding: 0 12px 8px;
}

# .card:hover .card-arrow {
#     opacity: 1;
#     color: #e46e08;
#     font-size: 30px;
    
# }

# .card:active .card-arrow {
#     transform: translateX(-50%) scale(1.3);
# }

    </style>
""", unsafe_allow_html=True)


# Header with logo and title
col_logo, col_title = st.columns([32, 68])
with col_logo:
    st.image("/home/user/app/images/OS_AI_1_cropped.png", use_column_width=True)

spacer_col = st.columns(1)[0]
with spacer_col:
    st.markdown("<div style='height: 50px;'></div>", unsafe_allow_html=True)



col1, col2, col3 = st.columns([1, 1, 1])

with col1:
    st.markdown("""
        <a href="/Semantic_Search" target="_self" style="text-decoration: none;">
            <div class="card">
                <div class="card-header">🔍</div>
                <div class="card-text" style="font-size: 31px; color: #e46e08; ">AI Search</div>
                <div class="card-description" style="font-size: 16px; color: #ccc; margin-top: 6px;text-align: center;white-space: normal;">
                    Explore ML search types, Re-ranking and Query rewriting on retail data </div>
            </div>
        </a>
    """, unsafe_allow_html=True)


with col2:
    st.markdown("""
        <a href="/Multimodal_Conversational_Search" target="_self" style="text-decoration: none;">
            <div class="card">
                <div class="card-header">💬</div>
                <div class="card-text" style="font-size: 31px; color: #e46e08; ">Multimodal RAG</div>
                <div class="card-description" style="font-size: 16px; color: #ccc; margin-top: 6px;text-align: center;white-space: normal;">
                    Explore Multimodal RAG over complex PDFs (with tables, graphs etc) </div>
            </div>
        </a>
    """, unsafe_allow_html=True)
st.markdown("""
    </div>
""", unsafe_allow_html=True)



with col3:
    st.markdown("""
        <a href="/AI_Shopping_Assistant" target="_self" style="text-decoration: none;">
            <div class="card">
                <div class="card-header">🤖</div>
                <div class="card-text" style="font-size: 31px;  color: #e46e08;">Agentic RAG</div>
                <div class="card-description" style="font-size: 16px; color: #ccc; margin-top: 6px;text-align: center;white-space: normal;">
                    Explore how an AI agent in front of RAG enhances product search experience </div>
            </div>
        </a>
    """, unsafe_allow_html=True)
st.markdown("""
    </div>
""", unsafe_allow_html=True)

st.markdown("""
    <style>
    #home-page html, #home-page body, #home-page .main {
        background: linear-gradient(135deg, #0d0d0d 0%, #1a1a1a 30%, #102132 100%);
        height: 100vh;
        overflow: hidden;
        color: white;
    }
    </style>
""", unsafe_allow_html=True)

st.markdown("""
    <style>
    #home-page html, #home-page body, #home-page .main {
        background: linear-gradient(135deg, #0d0d0d 0%, #1a1a1a 30%, #102132 100%);
        height: 100vh;
        overflow: hidden;
        color: white;
    }
    </style>
""", unsafe_allow_html=True)