Understanding Nuanced Vocabulary in Context

In his latest novel, the author weaves a rich tapestry of characters linked by their shared experiences of loss and redemption. The narrative unfolds in a small coastal town, where each character grapples with their demons, seeking solace in the memories of those they have lost. In one passage, the protagonist reflects on a fraught relationship with his estranged father, recalling moments of both bitterness and fleeting happiness. The author poignantly describes these recollections as a 'mosaic of emotions' that shapes the protagonist's journey toward forgiveness.

Amidst this exploration, the protagonist's realization that 'understanding is the first step toward healing' becomes a pivotal moment in the story, highlighting the nuanced way that relationships can be both a source of pain and redemption.

Based on the context above, what does the word 'nuanced' most closely mean?