PHASE 1: VISUAL DECONSTRUCTION - **Fabric Physics:** The source garment is a heavyweight cotton jersey t-shirt. It possesses a matte finish with low specularity (no shine). The simulation must reflect a "structured drape," meaning it holds its shape comfortably without clinging like spandex or hanging heavily like wet linen. The material absorbs light rather than reflecting it. - **Key Features:** The central graphic is critical: a complex cyan/teal circular "mandala" pattern with a central trident (Trishul) logo in a contrasting pink/metallic hue. The ribbed crew neck collar and the drop-shoulder seam construction (characteristic of oversized fits) must be preserved. PHASE 2: FIT & DRAPE SIMULATION - **Body Mapping:** The target user is currently wearing a thick knit sweater; the simulation must estimate the skin surface *beneath* this bulk to avoid the t-shirt looking artificially puffed out. The t-shirt should drape with a "relaxed fit" on the user's broader shoulders, hanging vertically from the chest with minimal tapering at the waist. Gravity should pull the fabric straight down, smoothing out the chest area compared to the current bunched sweater. - **Occlusion Handling:** The user's beard partially covers the neck area; the new t-shirt neckline must be composited *behind* the beard hair. The turban constitutes a hard upper boundary that must not be intersected. The user's arms are resting at his sides; deep ambient occlusion shadows must be generated in the underarm/axillary regions to ground the garment. PHASE 3: ENVIRONMENT & LIGHTING - **Light Match:** The target environment (cinema lobby) features strong, warm, diffused overhead lighting (yellow/orange temperature). The source garment (currently lit by cool studio flash) must be relit to accept this warm cast. The top of the shoulders and upper chest must show the brightest exposure, graduating to darker shadows towards the waistline. - **Color Calibration:** The deep navy/black of the source t-shirt must be color-graded to reflect the warm environmental ambient light, shifting slightly towards a warmer dark grey/brown-black tone to match the surroundings. The cyan graphics must absorb some of the yellow ambient light, likely shifting slightly towards a teal-green hue to look realistic. PHASE 4: IDENTITY PROTECTION - **Facial Lock:** The user's entire face, beard structure, and specifically the white turban must remain absolutely frozen and pixel-perfect. The boundary line between the turban and the current forehead/temples must be preserved. - **Body Integrity:** Strict prohibition on body morphing. The user's shoulder width and torso volume must be maintained; do not slim the user to match the source model's leaner physique. The final render must represent the user's actual build wearing the new garment.