Design a light-mode mobile app interface screen: quiet botanical productivity blending sea-green anchors, soft terracotta endpoints, and pillowed surfaces.
LAYOUT
The mobile view is organized in a single centered column starting with a sparse navigation tier (back button left, title and description centered). The primary card occupies the bulk of the viewport, presenting a top-to-bottom sequence of category header, mode dropdown, paired start/end fields, and an expanded inline calendar. A secondary action card anchors the bottom edge.
PALETTE (use these exact hex values)
- #22383E — Pine Slate: Primary headings, active calendar numerals, and high-emphasis labels
- #8FA1A6 — Muted Eucalyptus: Subtitles, calendar weekday labels, and out-of-range calendar dates
- #417B74 — Sage Green: Start date anchor, selected icons, milestone button glyphs, and primary accents
- #F09E83 — Terracotta Peach: Finish date indicator dot, endpoint calendar token, and finish input icon
- #E4EFF0 — Range Wash: Horizontal pill background connecting start and finish dates on the calendar
- #EDF5F4 — Pale Mint Surface: Circular icon button backdrops and secondary control surfaces
- #FFFFFF — Pure White: Main floating form sheet and nested calendar card backgrounds
- #DFE7E6 — Border Tint: Single-pixel structural outlines around cards, dropdowns, and date fields
TYPOGRAPHY
Typeface Nunito (or Sofia Pro Soft, Quicksand, Mulish), weights 400/500/600/700. Sizes 12px caption, 13px body-sm, 14px body, 16px body-lg, 18px subheading, 22px heading. Tracking -0.01em on headings, 0.01em on body. The typography is warm, rounded, and calm, softening standard form interactions into an unhurried, wellness-inspired ritual. Rounded terminals prevent technical rigidity, while ample tracking in the calendar grid aids legibility. Free equivalents like Nunito or Quicksand fully preserve this personality.
GEOMETRY & SPACING
Corner radii — cards 20px, links 999px, inputs 10px, buttons 12px. Spacing on a 4px unit, 12px gaps, 24px between sections, 375px container, comfortable density.
DEPTH
Depth is rendered virtually flat, relying on 1px pale borders (#DFE7E6) on pure white cards against an off-white canvas. Elevation shifts are communicated through nested framing—such as the notched calendar panel seated inside the primary card—rather than diffused box-shadows.
IMAGERY
Visual accents are limited to delicate, low-opacity watercolor botanical illustrations (eucalyptus leaves in soft sage-gray). Imagery must never be photographic, heavily saturated, or geometrically aggressive.
SIGNATURE DETAIL — the thing that makes this design itself
The signature interaction is the dual-tone date range pill, combining an active sage start circle (#417B74) and a peach end circle (#F09E83) seamlessly joined across calendar cells by an icy-mint track (#E4EFF0). Misusing this by using a single flat color for both boundaries instantly dissolves the timeline's storytelling.
MUST
- Use deep pine-slate #22383E rather than pure black for all standard typography.
- Pair #417B74 exclusively with start dates and #F09E83 exclusively with completion dates.
- Enclose connected date intervals in a single continuous #E4EFF0 rounded horizontal pill.
- Maintain generous 20px outer corner radii on primary floating containers.
AVOID
- Do not introduce harsh drop shadows; rely on 1px #DFE7E6 borders for containment.
- Do not use saturated warning reds for finish deadlines; strictly stick to soft terracotta #F09E83.
- Do not use sharp 0px or 2px corner radii anywhere in this system.
- Do not crowd the calendar numbers; preserve at least 8px padding around each day cell.
OUTPUT
Render as a clean, pixel-crisp UI design at roughly 2144:3840. Flat vector rendering, real legible text, no browser chrome, no device mockup frame, no watermark, no lorem ipsum placeholder blocks. Try in DraPub 
