{#- chirp-ui: ASCII 7-Segment Display
    Retro LCD-style digit readout using box-drawing characters.

    Usage:
        from "chirpui/ascii_7seg.html" import ascii_7seg

        ascii_7seg("99.97")
        ascii_7seg("1234", label="UPTIME")
        ascii_7seg("08:42", variant="accent")

    Renders each character as a tall monospace glyph in a display frame.
    Supports: 0-9, colon, period, dash, space.
    Variants: default, accent, success, warning, error.
-#}

{% def ascii_7seg(text, label=none, variant="", cls="") %}
{% set variant = variant | validate_variant(("", "default", "accent", "success", "warning", "error"), "") %}
{% set variant_class = " chirpui-ascii-7seg--" ~ variant if variant and variant != "default" else "" %}
<div class="chirpui-ascii-7seg{{ variant_class }}{{ " " ~ cls if cls else "" }}">
    {% if label %}<span class="chirpui-ascii-7seg__label">{{ label }}</span>{% end %}
    <span class="chirpui-ascii-7seg__display">
        <span class="chirpui-ascii-7seg__frame" aria-hidden="true">┌</span>
        {% for ch in text %}
        <span class="chirpui-ascii-7seg__digit" data-char="{{ ch }}">{{ ch }}</span>
        {% end %}
        <span class="chirpui-ascii-7seg__frame" aria-hidden="true">┐</span>
    </span>
</div>
{% end %}