Halcyon

Style: dark indigo-violet gradient canvas, pastel rainbow orbital ring motif, soft glassy calendar card.

Layout: stat header above a centered score hero and activity calendar column.

Components: avatar with streak/breaths/minutes stat row, circular balance-score dial of overlapping rings, month-view calendar with activity dots, notification bell, bottom tab bar.

Vibe: serene, meditative, nocturnal — mindfulness consumers.