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("""
    <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;
    height: 240px;
    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(1.02);
    color: #e46e08;
}

/* Header strip with icon */
.card-header {
    font-size: 25px;
    color: #AAA;
    text-transform: uppercase;
    border-bottom: 1px solid #444;
    padding-bottom: 8px;
    margin-bottom: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 24px;
}

.card-text {
    font-size: 28px;
    font-weight: 500;
    flex-grow: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 8px;
}

/* 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:hover .card-arrow {
    opacity: 1;
    color: #e46e08;
}

.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([31, 66])
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: 100px;'></div>", unsafe_allow_html=True)


col1, col2, col3 = st.columns(3)

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">AI Search</div>
                <div class="card-arrow">→</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">Multimodal RAG</div>
                <div class="card-arrow">→</div>
            </div>
        </a>
    """, 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">Agentic Shopping Assistant</div>
                <div class="card-arrow">→</div>
            </div>
        </a>
    """, unsafe_allow_html=True)