{{ define "meta" }}
    {{/* Title falls back to SiteName if empty — better than rendering a blank
         <title> that screen readers and tab chrome handle poorly. */}}
    <title>{{ or .Title .SiteName "ATCR" }}</title>

    {{/* Description: omit the tag entirely when empty rather than emitting
         <meta name="description" content="">, which some SEO tools flag. */}}
    {{ if .Description }}<meta name="description" content="{{ .Description }}">{{ end }}
    {{ if .Canonical }}<link rel="canonical" href="{{ .Canonical }}">{{ end }}
    {{ if .Robots }}<meta name="robots" content="{{ .Robots }}">{{ end }}

    {{/* OpenGraph */}}
    <meta property="og:locale" content="{{ or .OGLocale "en_US" }}">
    <meta property="og:title" content="{{ or .Title .SiteName "ATCR" }}">
    {{ if .Description }}<meta property="og:description" content="{{ .Description }}">{{ end }}
    <meta property="og:type" content="{{ or .OGType "website" }}">
    {{ if .Canonical }}<meta property="og:url" content="{{ .Canonical }}">{{ end }}
    {{ if .OGImage }}
    <meta property="og:image" content="{{ .OGImage }}">
    <meta property="og:image:width" content="1200">
    <meta property="og:image:height" content="630">
    {{ if .OGImageAlt }}<meta property="og:image:alt" content="{{ .OGImageAlt }}">{{ end }}
    {{ end }}
    <meta property="og:site_name" content="{{ or .SiteName "ATCR" }}">

    {{/* Twitter Card */}}
    <meta name="twitter:card" content="{{ or .TwitterCard "summary_large_image" }}">
    <meta name="twitter:title" content="{{ or .Title .SiteName "ATCR" }}">
    {{ if .Description }}<meta name="twitter:description" content="{{ .Description }}">{{ end }}
    {{ if .OGImage }}<meta name="twitter:image" content="{{ .OGImage }}">{{ end }}
    {{ if and .OGImage .OGImageAlt }}<meta name="twitter:image:alt" content="{{ .OGImageAlt }}">{{ end }}

    {{/* JSON-LD */}}
    {{ range .JSONLD }}
    {{ jsonldScript . }}
    {{ end }}
{{ end }}