Now I'll build the mobile-first customer detail screen with a clean, minimal design inspired by Attio/Linear/Apple. I'll create a premium white-background theme with large touch targets.

Now I'll create the customer detail page with all the components:

I've built a mobile-first Customer Detail screen for the Gym AI Sales Assistant with a clean, minimal design inspired by Attio/Linear/Apple. The interface features:

• Sticky header with customer name and priority badge (🔥 예약확정 필요)
• Fixed bottom action bar with large 56px touch targets for 전화, 카카오톡 (with authentic yellow styling), and 예약확정
• AI Recommendation card with a soft blue gradient highlighting the AI-powered suggestions and recommended actions
• Customer Information section displaying all details (phone, source, purpose, interest, visit date) in a clean list format
• 담당자 메모 section for staff notes with amber icons
• Status card showing current status (상담진행중) and next action (예약확정) with color-coded badges

The entire UI uses Korean language, has generous spacing and large touch targets for easy one-handed use by non-tech-savvy gym owners, with a premium white background and minimal aesthetic—no charts or analytics.