import gradio as gr


def build_welcome_page():
    """
    Builds the welcome/landing page: logo + title + two navigation cards.
    Each "card" is a Column containing a primary button plus a short
    Markdown caption underneath (since gr.Button only supports plain,
    single-line text and cannot render a styled subtitle itself).

    Returns (btn_single, btn_multi) so the caller can wire up
    page-switching logic in interface.py.
    """
    with gr.Column(elem_classes="welcome-page"):

        with gr.Column(elem_classes="welcome-logo"):
            gr.Image(
                value="assets/logo.png",
                show_label=False,
                interactive=False,
                container=False,
                height=160
            )

        gr.Markdown(
            "# UniTor ESG Insights System",
            elem_classes="welcome-title"
        )
        gr.Markdown(
            "Choose how you'd like to analyze sustainability reports.",
            elem_classes="welcome-title"
        )

        with gr.Row():
            with gr.Column():
                btn_single = gr.Button(
                    "📄  Single Report Analysis",
                    variant="primary",
                    elem_classes="welcome-btn"
                )
                gr.Markdown(
                    "Traceable, paragraph-level analysis of one company report.",
                    elem_classes="welcome-caption"
                )

            with gr.Column():
                btn_multi = gr.Button(
                    "📊  Multi-Report Comparative Analysis",
                    variant="primary",
                    elem_classes="welcome-btn"
                )
                gr.Markdown(
                    "Compare and benchmark multiple companies' reports side by side.",
                    elem_classes="welcome-caption"
                )

    return btn_single, btn_multi