Design a dark-mode mobile app interface screen: illuminated deep-space timeline charting historic discovery through cyan and magenta spectral neon.
LAYOUT
The mobile layout follows a top-down single column story flow. It begins with minimalist chrome navigation, delivers impact through an asymmetric hero combining text on the left and silhouette art on the right, inserts an interactive query box, introduces the continuous timeline scrubber, and concludes with a rhythmic vertical feed of padded event cards.
PALETTE (use these exact hex values)
- #03070d — Abyssal Navy: Deepest background canvas anchoring the entire mobile viewport and top status areas
- #0b1420 — Container Indigo: Subtle low-contrast surface for search field and event card containers
- #2eb5e5 — Electric Cyan: Headline emphasis, active timeline era, historical year timestamps, and optical telegraph tag
- #8754c2 — Mystic Violet: Mid-spectrum timeline segment, mid-era timeline nodes, and wire category icon chips
- #eb4386 — Neon Magenta: Third display headline accent and modern timeline terminus node
- #152438 — Ghost Border: Hairline boundary stroke for search inputs and timeline event cards
- #ffffff — Primary Text: Display headings, event card titles, and active selected era labels
- #7a8b9e — Secondary Text: Subheadings, search placeholder text, and card body descriptions
- #3d516b — Muted Text: Inactive timeline era milestones, category tracker headers, and subtle chevrons
TYPOGRAPHY
Typeface SF Pro Display (or Inter,Public Sans,Roboto), weights 400/500/600/700. Sizes 10px caption, 12px body-sm, 14px body, 16px subheading, 20px heading, 38px display. Tracking -0.03em at display, 0.1em at caps tracker. The type is authoritative, scientific, and clean, relying on a modern neo-grotesque sans-serif with geometric tendencies. It avoids dated serif styling despite covering historical themes, establishing the perspective of a modern analytical observer peering into history. System fonts like SF Pro or Inter perfectly capture this objective clarity.
GEOMETRY & SPACING
Corner radii — cards 16px, links 4px, inputs 12px, buttons 999px. Spacing on a 4px unit, 12px gaps, 24px between sections, 390px container, comfortable density.
DEPTH
Depth is created purely via luminosity against pure black (#03070d). Surfaces use deep midnight blues (#0b1420) with fine 1px strokes (#152438) instead of traditional blurred drop shadows. Glowing cyan highlights serve as focus indicators that illuminate the surface hierarchy.
IMAGERY
Imagery combines high-contrast atmospheric nocturnal digital matte paintings (starlit skies, silhouetted towers) with authentic 19th-century black-and-white archival engravings and portraits. Modern full-color photos or sepia-toned vintage filters are strictly avoided in favor of crisp, deep-toned silver-halide monochrome.
SIGNATURE DETAIL — the thing that makes this design itself
The tri-color spectral headline lockup ('Explore. Discover. Understand.') flowing directly into the continuous horizontal gradient timeline scrubber below. This cyan-to-violet-to-magenta spectral bar represents time as a continuum, where active nodes expand into concentric glowing rings. It fails when broken into disjointed individual pills or flat monochrome lines.
MUST
- Use strict chromatic progression (cyan to violet to magenta) across all chronological UI controls.
- Render historical archival photography in clean monochrome or sepia-free cool grayscale to blend with navy cards.
- Keep card background colors deeply tied to navy (#0b1420) rather than neutral dark gray.
- Overprint dramatic display headlines in tight, stacked lines with individual neon word colors.
AVOID
- Do not use warm amber, yellow, or sepia tones which conflict with the cool nocturnal palette.
- Do not apply drop shadows with blur on cards; rely solely on 1px #152438 border definition.
- Do not let search bar or card surfaces elevate into bright grays above #152438.
- Do not remove the smooth gradient bridge between eras on the timeline track.
OUTPUT
Render as a clean, pixel-crisp UI design at roughly 1280:3840. Flat vector rendering, real legible text, no browser chrome, no device mockup frame, no watermark, no lorem ipsum placeholder blocks. Try in DraPub 
