{# The exciton page's own control group, appended to the shared strip in
_panel_controls.html. Every row is a CONTROLS entry keyed by its DOM id, as
the shared ones are. #}
<section class="pane-group list" id="pane-group-exciton" aria-label="Exciton" role="tabpanel">
    <div class="list-column">
        <p class="group-title">Composition<button type="button" class="help-badge"
                data-help="Which of the exciton's transitions go into its map. Each state's row shows how much of it the target covers and how many transitions that took; each photohole's row below shows only that count - the weight column beside it says how complete the hole itself is.">?</button></p>
        <hr class="divider">
        <div class="control-item"
            title="Keeps the fewest highest-weight transitions whose Σ|X_vc|² reaches this percent of the state. Default 95%, range 50–99%.
99% is everything excitons.json stores - the control cannot go higher.
Each transition kept costs one more coefficient row.">
            <label for="contribution-coverage" class="label">Coverage [%]<button type="button"
                    class="help-badge"
                    data-help="How much of the excited state its momentum map is built from. A TD-DFT state is a sum over many electron-hole configurations, most of them negligible; this sets what fraction of the state's weight the kept ones must cover, and the line below reports how many transitions that took.">?</button></label>
            <input type="number" id="contribution-coverage" value="95" min="50" max="99" step="1">
        </div>
        <p class="group-note" id="coverage-summary"></p>
        <div class="control-item"
            title="Draw the ground-state valence spectrum behind the exciton's peaks, on the same E_kin axis.
Each occupied orbital at E_kin = hν + E_orbital: what the same analyser would see without the pump.
Both curves are scaled to the strip width, so compare position and shape, not height.">
            <label for="ekin-reference" class="label">Ground-state overlay<button type="button"
                    class="help-badge"
                    data-help="A reference for reading the exciton's kinetic-energy spectrum. It draws the unpumped valence spectrum on the same axis, so the shift each photohole picks up from the excitation energy Ω can be read off directly.">?</button></label>
            <input type="checkbox" id="ekin-reference">
        </div>
    </div>
    <div class="list-column">
        <p class="group-title">Hole Position<button type="button" class="help-badge"
                data-help="Where the hole is pinned for the R_h view, in the molecular frame. A planar molecule lies in z = 0, where every π orbital has a node and the conditional wavefunction is exactly zero, so z starts at 1 Å.">?</button></p>
        <hr class="divider">
        <div class="control-item"
            title="Hole position along x, in the molecular frame. Default 0 Å, range −50…50.">
            <label for="hole-x" class="label">R<sub>h</sub> x [Å]<button type="button" class="help-badge"
                    data-help="Where along x the hole is held for the conditional wavefunction Ψ(r_e; R_h). The frame is the molecule's own, measured from the axis cross in the real-space view.">?</button></label>
            <input type="number" id="hole-x" value="0" min="-50" max="50" step="0.1">
        </div>
        <div class="control-item"
            title="Hole position along y, in the molecular frame. Default 0 Å, range −50…50.">
            <label for="hole-y" class="label">R<sub>h</sub> y [Å]<button type="button" class="help-badge"
                    data-help="Where along y the hole is held. The three coordinates pick one point for the hole; where the photohole orbital has no amplitude there is nothing to condition on, and the real-space view says so instead of drawing.">?</button></label>
            <input type="number" id="hole-y" value="0" min="-50" max="50" step="0.1">
        </div>
        <div class="control-item"
            title="Hole position along z, in the molecular frame. Default 1 Å, range −50…50.
A planar molecule lies in z = 0, where every π orbital has a node: Ψ(r_e; R_h) is exactly zero there.">
            <label for="hole-z" class="label">R<sub>h</sub> z [Å]<button type="button" class="help-badge"
                    data-help="The height of the hole above the molecular plane. A π system has no amplitude in the plane itself, so a hole pinned at z = 0 conditions on a point the hole can never occupy and the view goes blank.">?</button></label>
            <input type="number" id="hole-z" value="1" min="-50" max="50" step="0.1">
        </div>
    </div>
</section>