Create a formal internship completion certificate that recognizes the intern's contributions, documents their project work and skills development, and provides an overall performance assessment.

INTERNSHIP CERTIFICATE GUIDELINES:
- Use a certificate-style format with company name/logo placeholder, a formal title ("Certificate of Internship Completion"), and bordered layout cues.
- State the intern's full name, role/title, department, and exact dates of the internship prominently.
- List specific projects worked on with a one-sentence description of each project's scope or objective.
- Enumerate skills demonstrated or developed during the internship (both technical and soft skills).
- Include an overall assessment paragraph summarizing the intern's performance, attitude, and contributions (use specific, professional language rather than vague praise).
- Include a signatory block for the supervisor or HR representative with name, title, and date of issuance.
- Optionally include a brief statement that the intern is recommended for future opportunities.

OUTPUT CONSTRAINTS:
- Length: 1 page (200-350 words of body content, excluding formatting elements).
- Tone: formal and commendatory.
- Structure the document with clear visual sections (header, body, skills list, assessment, signature).
- Do not include grades or numerical scores unless specifically requested.

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MY INFO:

Intern Name: (required)

Role/Title: (required)

Company: (required)

Department: (required)

Duration / Dates: (required — e.g., "June 1 - August 31, 2025" or "3 months")

Projects Worked On: (required — list with brief descriptions)

Skills Demonstrated: (optional — technical and soft skills; if blank, infer reasonable skills from the projects and role)

Overall Performance Assessment: (optional — e.g., exceeded expectations, strong contributor, etc.)

Supervisor Name and Title: (optional — for the signatory block)