body { background: #f3f6fb; }
.hero { background: linear-gradient(135deg, #121826, #0d6efd); color: #fff; border-radius: 22px; }
.card-soft { border: 0; border-radius: 18px; box-shadow: 0 10px 30px rgba(15, 23, 42, .08); }
.coach-bubble { background: #0d6efd; color: #fff; border-radius: 18px; padding: 18px; }
.user-bubble { background: #e8eef9; color: #111827; border-radius: 18px; padding: 18px; }
.metric { font-size: 2rem; font-weight: 800; }
.small-muted { color: #6b7280; font-size: .92rem; }
.calendar-pill { display: inline-block; padding: 6px 12px; border-radius: 999px; background: #e0edff; color: #0d6efd; font-size: .85rem; }
.exercise-row { border-bottom: 1px solid #edf2f7; }
.chat-window { max-height: 420px; overflow-y: auto; }