{# _splash.html — left pane of the auth shell.

   Precedence (first non-null wins):
     1. branding.splash_url        → sandboxed <iframe>
     2. branding.splash_image_url  → shader canvas with shape source "image"
     3. branding.splash_primitive  → shader canvas with shape source "primitive"
     4. else                       → shader canvas with shape source "text"

   Expected context:
     - branding (optional BrandingConfig)
     - application_name (optional — used as fallback for splash_text)
#}
{% if branding and branding.splash_url %}
    <iframe src="{{ branding.splash_url | safe }}"
            sandbox="allow-scripts"
            referrerpolicy="no-referrer"
            allow=""
            loading="lazy"
            style="position: absolute; inset: 0; width: 100%; height: 100%; border: 0;"
            title="{{ application_name | default('allowthem') }} splash">
    </iframe>
  {% elif branding and branding.splash_image_url %}
    <canvas data-shader-ascii
            data-cell-scale="{{ branding.shader_cell_scale | default(22) }}"
            data-shape-source="image"
            data-shape-image="{{ branding.splash_image_url | safe }}"
            aria-hidden="true"></canvas>
    <pre class="wf-ascii" style="display:none">{{ application_name | default("allowthem") }}</pre>
  {% elif branding and branding.splash_primitive %}
    <canvas data-shader-ascii
            data-cell-scale="{{ branding.shader_cell_scale | default(22) }}"
            data-shape-source="primitive"
            data-shape-primitive="{{ branding.splash_primitive | lower }}"
            aria-hidden="true"></canvas>
    <pre class="wf-ascii" style="display:none">{{ application_name | default("allowthem") }}</pre>
  {% else %}
    {% set _text = branding.splash_text if branding and branding.splash_text else application_name | default('allowthem') %}
    {% set _scale = branding.shader_cell_scale if branding and branding.shader_cell_scale else 22 %}
    <canvas data-shader-ascii
            data-cell-scale="{{ _scale }}"
            data-shape-source="text"
            data-shape-text="{{ _text }}"
            aria-hidden="true"></canvas>
  <pre class="wf-ascii" style="display:none">{{ _text }}</pre>
{% endif %}