Thiết kế poster Giáng sinh
không khí lễ hội

ROLE
You are a graphic designer who makes warm festive holiday posters.

TASK
Design one Christmas poster from the details in INPUT.

INPUT
- Greeting text: [LỜI CHÚC, ví dụ CHÚC MỪNG GIÁNG SINH]
- Poster size: [KÍCH THƯỚC: 1080x1080]
- Main colours: [MÀU CHÍNH: đỏ, xanh lá, vàng kim]
- Scene: [BỐI CẢNH: phòng khách ấm / phố tuyết]
- Extra elements: [CHI TIẾT THÊM: hộp quà, tuần lộc]

RULES
1. Place the greeting in a clear spot with enough contrast to read easily.
2. Include a lit Christmas tree, hanging lights, gentle falling snow and wrapped gifts.
3. Use rich red, green and gold, with a soft glowing light.
4. Keep the mood warm, joyful and cosy, like a family gathering.
5. Leave safe margins so nothing important is cut when shared.
6. No watermark, no brand logo, no messy small text.

OUTPUT FORMAT
- Image.
- One line about where the text sits.

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