Design a dark-mode mobile app interface screen: deep midnight canvas electrified by luminous cyan-to-blue gradients and tactile translucent glass cards.
LAYOUT
The screen follows a vertically stacked mobile layout. The top third features an asymmetrical greeting with title, subtitle, and an overlapping 3D lock visual emerging from the top right. Below rests a self-contained 24px rounded authentication card, followed immediately by a horizontally scrolling Category row, and terminating in a curated media feed with header controls.
PALETTE (use these exact hex values)
- #070d14 — Midnight Base: Root background color across the entire mobile screen canvas
- #0e1620 — Elevated Sheet: Background fill for the primary auth container card and feed background
- #131e2b — Input Surface: Dark interior fill for input fields, social auth buttons, and category chips
- #1d2d3e — Surface Border: Subtle 1px perimeter stroke on inputs, cards, and dividers
- linear-gradient(90deg, #2ecc71 0%, #1c92d2 100%) — Primary Action Gradient: Dominant horizontal gradient for main submit CTA button
- #38ef7d — Neon Mint: Active states, checkmark box, inline links, and category highlight borders
- #ffffff — Text Primary: Headings, active button labels, and high-emphasis icons
- #8493a3 — Text Secondary: Placeholder text, subheadings, labels, and secondary action copy
- #4f5e70 — Text Muted: Inactive captions, divider text, and subtle icons
TYPOGRAPHY
Typeface Inter (or SF Pro Display, Plus Jakarta Sans, Roboto), weights 400/500/600/700. Sizes 11px caption, 13px body-sm, 14px body, 15px body-lg, 17px subheading, 26px heading. Tracking -0.02em at display, 0 at body. The typography relies on a clean, geometric neo-grotesque sans (Inter or SF Pro Display) that feels utilitarian, tech-forward, and modern. Its neutral geometry balances the dramatic lighting and futuristic gradients, ensuring readability at small sizes like sparkline metrics and form captions. System fonts like SF Pro or Inter are ideal matches with no licensing overhead.
GEOMETRY & SPACING
Corner radii — cards 24px, links 6px, inputs 14px, buttons 14px. Spacing on a 4px unit, 12px gaps, 24px between sections, 390px container, comfortable density.
DEPTH
Elevation is purely tonal and optical. No traditional dark drop shadows are used; instead, depth is achieved by stacking lighter dark-slate surfaces (#131e2b) over the canvas (#070d14) and outlining them with fine 1px semi-transparent borders (#1d2d3e). Top-layer presence is reinforced with neon cyan and teal backdrop blooms behind key 3D elements.
IMAGERY
The imagery combines realistic volumetric 3D rendered assets (a metallic cyan padlock with a luminous biometric fingerprint core) and live-action concert/event photography. All media uses high-contrast stage lighting, smoke, and cool blue/teal tones that harmonize with the dark UI palette. Vector flat clip art or warm sepia photography would be entirely off-brand.
SIGNATURE DETAIL — the thing that makes this design itself
The design's signature element is the horizontal mint-to-cyan gradient CTA coupled with the matching sparkline micro-cards and floating biometric lock. To execute it properly, maintain the glowing teal/cyan halo effect behind rounded dark cards (#0e1620), using subtle 1px border strokes. It is ruined if translated into generic flat monochrome or if the gradients are replaced with muddy solid primaries.
MUST
- Use deep midnight blue (#070d14) rather than absolute #000000 to keep luminous depth.
- Limit horizontal linear gradients strictly to key hero graphics and the main CTA.
- Pair emerald/mint accents with dark backgrounds for selected items and micro-charts.
- Maintain a uniform 14px corner radius across all inputs and primary buttons.
AVOID
- Do not use sharp 0px or pill 999px radii on input fields; keep them consistently at 14px.
- Avoid flat, harsh drop shadows; rely solely on translucent fills and border strokes.
- Do not make background glows harsh or multi-colored; keep them soft teal and cyan.
- Never use pure black borders or dividers on dark surfaces.
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 
