Method sanitizeColorHex

src/FileRise/Domain/AdminModel.php:739–764

($value)

    }

    private static function sanitizeColorHex($value): string
    {
        $value = trim((string)$value);
        if ($value === '') {
            return '';
        }

        // allow #RGB or #RRGGBB (or without leading #)
        if (preg_match('/^#?([0-9a-fA-F]{3}|[0-9a-fA-F]{6})$/', $value, $m)) {
            return '#' . strtoupper($m[1]);
        }

        // allow basic rgb()/rgba()/hsl()/hsla() syntaxes
        $clean = preg_replace('/\s+/', ' ', $value);
        if (preg_match('/^(rgb|rgba|hsl|hsla)\([0-9%.,\s]+\)$/i', $clean)) {
            return $clean;
        }

        // allow a few safe keywords
        $lower = strtolower($clean);
        $keywords = ['transparent', 'black', 'white', 'red', 'green', 'blue', 'gray', 'grey'];
        if (in_array($lower, $keywords, true)) {
            return $lower;
        }
        return '';
    }

    private static function sanitizeMetaDescription($value): string
    {