System Requirements Document for minecraft-kawaii-cat

1. Introduction

minecraft-kawaii-cat is a first-party web product for producing a Minecraft texture pack that replaces the game's UI elements with a cute kawaii cat theme, targeted at Minecraft game version 26.3. The product exists so that a creator can generate, organize, and package themed UI textures — hearts, hotbar slots, inventory grid, crosshair, recipe book, and the other interface surfaces — into a version-targeted pack that a player can apply in-game.

The audience is the hobbyist Minecraft texture-pack creator and the player who applies the finished pack. The tone is playful and character-led: the interface itself is the kawaii cat, not a neutral dashboard wrapped around a theme. The product is deliberately narrow — it covers UI elements only, targets version 26.3 only, and commits to a cute kawaii cat theme as a hard constraint rather than a selectable style.

2. System Overview

The current delivery is a first-party web application with application-owned identity. A Texture Pack Creator enrolls on Sign Up, verifies on Login, and works in two protected destinations: Texture Studio, where the pack's UI element textures are produced and organized under the kawaii cat theme, and Pack Builder, where those textures are packaged into a Minecraft texture pack targeting version 26.3. An anonymous Landing page explains the generator, its kawaii cat theme, and its version 26.3 targeting before any protected work begins.

Two accepted human personas act in the current product: the Texture Pack Creator, who produces and organizes the pack, and the Pack User, who applies the finished pack in Minecraft 26.3 and sees the themed UI in place of the default interface. The Pack User's success is observed in-game, in Minecraft, not inside this product.

2a. Product Interpretation and Delivery Boundary

The product owns the creation and packaging of the UI texture pack. It owns the creator's durable work — the textures produced, the organization of those textures, and the pack assembled from them — and it owns the identity that keeps that work bound to the correct creator across sessions.

The product does not own Minecraft. Applying the finished pack, and seeing the kawaii cat UI elements appear in place of the default interface, happens inside Minecraft 26.3 under the player's own control. The product's responsibility ends at producing a complete, version-targeted pack that can be applied in-game; the in-game result is the Pack User's own outcome on an external surface.

Scope is bounded in three explicit ways. First, the pack covers UI elements — it is not a block, item, mob, or world texture pack. Second, it targets Minecraft game version 26.3 — not a range of versions and not an unspecified "latest". Third, the theme is cute kawaii cat — it is the product's identity, not one option among several.

Identity is application-owned because the creator's texture and pack work is durable and must be resumable. Enrollment is self-service with no invitation or provisioning boundary. The anonymous Landing page and the Login and Sign Up access surfaces are reachable without prior identity; Texture Studio and Pack Builder require an established session. No differentiated permissions, roles, or visibility controls exist over shared product state — every creator works on their own textures and packs.

2b. Source Content Inventory

Not applicable. No reference directive in this project declares content_source authority, so no source content inventory is included.

2c. Page Content and Component Coverage

Landing

• Information and state: Anonymous public entry. Explains what the product generates (a Minecraft UI texture pack), the theme it applies (cute kawaii cat), and the version it targets (Minecraft 26.3). No creator-specific or pack-specific state is shown.
• Primary actions: Begin a texture pack (routes an unauthenticated visitor into enrollment or verification, then into protected work); proceed to verification for a returning creator.
• Supporting actions: Navigate to Sign Up; navigate to Login; scroll the colour-blocked sections; pause the paw-print marquee on hover.
• Domain entities: Product description, theme statement, target version string 26.3, UI element categories previewed as texture tiles (hearts, hotbar slots, inventory grid, crosshair, recipe book).
• Component responsibilities:
  • Hero band: oversized wordmark with cat ears and a twitching whisker stroke; milk-white sticker card holding the MINECRAFT 26.3 version chip and the primary call to action; cat-face mascot bleeding off the right edge; paw-print marquee ribbon along the lower edge.
  • Texture-grid band: sticker tiles, each showing a magnified pixel-art preview of the actual UI texture it represents with a kawaii cat face baked in.
  • Pack-builder band: explains that themed UI textures are packaged into a version 26.3 pack for in-game application.
  • Sticky top navigation: pink capsule wordmark on the left, pill links on the right, collapsing to a full-width drawer under 768px.
  • Footer band: product identity and version targeting.
• States:
  • Loading: hero wordmark letters pop in sequentially with a 60ms stagger and slight overshoot; cat ears twitch once.

• Empty: not applicable — the page is static explanatory content with no user-owned collection.
• Success: visitor understands the product, theme, and version target, and either begins a pack or proceeds to verification.
• Error: if the visitor's session cannot be established when they choose to begin, they are routed to Sign Up or Login with the intent preserved.
• Recovery: the visitor can return to Landing at any time and re-enter through either access surface.
• Reduced motion: all motion is disabled or converted to a static stacked layout; the marquee becomes a horizontally scrollable row so every item can be brought fully into view.

Sign Up

• Information and state: Anonymous enrollment surface. Collects the credentials needed to establish a creator identity. No pack or texture state is shown.
• Primary actions: Create the creator identity and enter protected work.
• Supporting actions: Navigate to Login for an existing creator; return to Landing.
• Domain entities: Creator identity (credentials), session.
• Component responsibilities:
  • Enrollment form: credential fields with inline validation.
  • Submission control: capsule primary button.
  • Cross-link: route to Login.
• States:
  • Loading: submission control shows an in-progress state; fields are held.
  • Empty: form presented with empty fields and no error text.
  • Success: identity established, session started, creator routed into Texture Studio to begin durable texture and pack work.
  • Error: invalid or incomplete credentials are reported inline against the offending field; the entered values are preserved so the creator can correct and resubmit.
  • Recovery: a creator who already has an identity is routed to Login instead of creating a duplicate.

Login

• Information and state: Anonymous verification surface for a returning creator. No pack or texture state is shown before verification succeeds.
• Primary actions: Verify the returning creator and resume durable texture and pack work.
• Supporting actions: Navigate to Sign Up for a creator without an identity; return to Landing.
• Domain entities: Creator identity (credentials), session.
• Component responsibilities:
  • Verification form: credential fields with inline validation.
  • Submission control: capsule primary button.
  • Cross-link: route to Sign Up.
• States:
  • Loading: submission control shows an in-progress state; fields are held.
  • Empty: form presented with empty fields and no error text.
  • Success: session established and the creator is returned to the protected work they were resuming — Texture Studio or Pack Builder.
  • Error: unrecognized credentials are reported without revealing which field was wrong; the entered identifier is preserved so the creator can retry.
  • Recovery: repeated failure leaves the creator on Login with the option to enroll on Sign Up or return to Landing.

Texture Studio

• Information and state: Protected recurring workspace. Shows the creator's UI element textures for the current pack, each with its kawaii cat treatment, and the pack's target version 26.3. Requires an established session.
• Primary actions: Produce a UI element texture with the cute kawaii cat theme; organize produced textures within the pack.
• Supporting actions: Select a UI element category to work on; preview a texture as a magnified pixel-art tile; remove or replace a produced texture; move to Pack Builder when the texture set is ready.
• Domain entities: Pack (target version 26.3), UI element texture (category, kawaii cat treatment, preview), texture organization.
• Component responsibilities:
  • Texture grid: sticker tiles in a 2/3/4-column responsive grid, each with a visible cat-face thumbnail of the actual UI texture it represents.
  • Element category selector: hearts, hotbar slots, inventory grid, crosshair, recipe book, and the other UI element surfaces in scope.
  • Texture preview: magnified pixel-art tile with a soft pink glow behind it.
  • Version chip: MINECRAFT 26.3 hazard-style tag with a cat-ear notch, pinned to the corner of every pack card so version targeting is always visible.
  • Organization controls: arrange, remove, and replace produced textures.
• States:
  • Loading: texture tiles resolve into the grid; the version chip is present from first paint.
  • Empty: no textures produced yet — the grid presents the UI element categories as an invitation to produce the first texture, with the version chip visible.

• Success: a produced texture appears in the grid as a magnified pixel-art tile with its kawaii cat treatment applied and its category recorded.
• Error: a texture that cannot be produced is reported against its category tile with a retry action; already-produced textures are unaffected.
• Recovery: the creator can retry the failed texture, choose a different category, or continue organizing the textures that succeeded.
• Reduced motion: tile hover scale and colour flip are suppressed; tiles remain fully readable and selectable.

Pack Builder

• Information and state: Protected focused owner for packaging. Shows the current pack's assembled UI textures, its target version 26.3, and whether the pack is complete enough to apply in-game. Requires an established session.
• Primary actions: Package the themed UI textures into a Minecraft texture pack targeting game version 26.3.
• Supporting actions: Review which UI element textures are included; return to Texture Studio to produce or fix a texture; re-package after changes.
• Domain entities: Pack (target version 26.3, included UI element textures, packaging state).
• Component responsibilities:
  • Pack summary: the pack's target version chip MINECRAFT 26.3 and its included UI element textures.
  • Packaging control: capsule primary button that assembles the pack.
  • Completeness indicator: mint accent for the ready-to-apply state, muted mauve for incomplete or unavailable states.
  • Handoff note: states that the finished pack is applied by the player in Minecraft 26.3.
• States:
  • Loading: pack summary resolves; the version chip is present from first paint.
  • Empty: no textures available to package — the pack summary names the missing UI element textures and links back to Texture Studio.
  • Success: the pack is assembled and reported as targeting version 26.3, ready for the player to apply in Minecraft 26.3.
  • Error: packaging that fails is reported with a retry action; the included textures and the version target are preserved.

• Recovery: the creator can return to Texture Studio, adjust textures, and re-package; a failed packaging attempt never discards produced textures.
• Reduced motion: no motion is required for this page's function; state changes are conveyed by colour and text.

3. Functional Requirements

FR-1 — Generate a Minecraft UI texture pack. As a Texture Pack Creator, I should generate a Minecraft texture pack covering UI elements, so that the game's interface can be replaced with themed textures.

• Provenance: explicit
• Trigger/input: the creator begins pack work from Landing or resumes it from Texture Studio.
• Observable result: a pack exists that covers UI elements and is owned by the creator.
• Access state: requires an established session for the durable pack; the entry explanation on Landing is anonymous.
• Failure/recovery: if pack work cannot be started, the creator is routed to Sign Up or Login and returned to the work afterward.
• Continuation: the creator proceeds to produce UI element textures in Texture Studio.
• Acceptance: a pack covering UI elements is created and remains bound to the creator across sessions.

FR-2 — Target Minecraft game version 26.3. As a Texture Pack Creator, I should have my pack target Minecraft game version 26.3, so that it applies correctly in that version.

• Provenance: explicit
• Trigger/input: pack creation and packaging.
• Observable result: the pack's target version is 26.3, shown as the MINECRAFT 26.3 version chip on the pack's cards and summary.
• Access state: protected — visible to the owning creator in Texture Studio and Pack Builder.
• Failure/recovery: the version target is never silently changed; if it cannot be recorded, packaging reports the failure and preserves the produced textures.
• Continuation: the creator packages the pack in Pack Builder with the version target intact.
• Acceptance: every pack produced by the product carries the target version 26.3.

FR-3 — Apply a cute kawaii cat theme to the UI textures. As a Texture Pack Creator, I should apply a cute kawaii cat theme to the UI textures, so that the interface reads as kawaii cat throughout.

• Provenance: explicit
• Trigger/input: producing a UI element texture in Texture Studio.
• Observable result: the produced texture carries the cute kawaii cat treatment and previews as a magnified pixel-art tile with a kawaii cat face baked into the actual texture.
• Access state: protected — Texture Studio requires an established session.
• Failure/recovery: a texture that cannot be produced is reported against its category tile with a retry action; other produced textures are unaffected.
• Continuation: the creator organizes the produced textures and moves to Pack Builder.
• Acceptance: produced UI element textures carry the cute kawaii cat theme rather than the default interface look.

FR-4 — Produce and organize UI element textures. As a Texture Pack Creator, I should produce and organize the pack's UI element textures, so that the pack's interface surfaces are complete and in order.

• Provenance: required_inference (indispensable mechanics for the accepted pack-generation outcome)
• Trigger/input: the creator selects a UI element category — hearts, hotbar slots, inventory grid, crosshair, recipe book, and the other UI element surfaces in scope — and produces its texture.
• Observable result: the texture appears in the Texture Studio grid as a magnified pixel-art tile with its category recorded, and can be arranged, removed, or replaced.
• Access state: protected — requires an established session.
• Failure/recovery: a failed production is reported against its category tile with a retry action; the creator can choose a different category or continue organizing what succeeded.
• Continuation: the organized texture set becomes the input to Pack Builder.
• Acceptance: the creator can see, arrange, remove, and replace the pack's UI element textures.

FR-5 — Package the themed UI textures into a version-targeted pack. As a Texture Pack Creator, I should package the themed UI textures into a Minecraft texture pack targeting version 26.3, so that it can be applied in-game.

• Provenance: required_inference (indispensable mechanics for the accepted pack-generation outcome)
• Trigger/input: the creator packages from Pack Builder once the UI element textures are produced.
• Observable result: the pack is assembled, reported as targeting version 26.3, and marked ready to apply in Minecraft 26.3.
• Access state: protected — Pack Builder requires an established session.
• Failure/recovery: a failed packaging attempt is reported with a retry action and never discards produced textures; an incomplete pack names the missing UI element textures and links back to Texture Studio.
• Continuation: the creator re-packages after adjustments, or hands the finished pack to the player.
• Acceptance: a complete pack targeting version 26.3 is produced from the creator's themed UI textures.

FR-6 — Self-service enrollment for the Texture Pack Creator. As a Texture Pack Creator, I should enroll myself, so that I can begin durable texture and pack work without an invitation or provisioning step.

• Provenance: required_inference (identity continuity required by the accepted durable pack work)
• Trigger/input: the creator chooses to begin a texture pack from Landing without an existing identity.
• Observable result: a creator identity is established and a session starts, routing the creator into Texture Studio.
• Access state: anonymous entry — Sign Up is reachable without prior identity.
• Failure/recovery: invalid or incomplete credentials are reported inline with entered values preserved; a creator who already has an identity is routed to Login instead of creating a duplicate.
• Continuation: the creator begins producing UI element textures.
• Acceptance: a new creator can establish an identity unaided and reach protected work.

FR-7 — Returning verification for the Texture Pack Creator. As a Texture Pack Creator, I should verify myself on return, so that I can resume my durable texture and pack work.

• Provenance: required_inference (identity continuity required by the accepted durable pack work)
• Trigger/input: a returning creator submits credentials on Login.
• Observable result: a session is established and the creator is returned to the protected work they were resuming — Texture Studio or Pack Builder.
• Access state: anonymous entry — Login is reachable without prior identity; protected state remains unavailable until verification succeeds.
• Failure/recovery: unrecognized credentials are reported without revealing which field was wrong, the entered identifier is preserved, and the creator may retry, enroll on Sign Up, or return to Landing.
• Continuation: the creator resumes producing textures or packaging the pack.
• Acceptance: a returning creator reaches their own durable work after verification.

FR-8 — Apply the finished pack in Minecraft 26.3. As a Pack User, I should apply the finished pack in Minecraft 26.3, so that the kawaii cat UI elements appear in place of the default interface.

• Provenance: required_inference (the accepted outcome of the pack is its in-game effect for the player)
• Trigger/input: the player applies the finished pack in Minecraft 26.3.
• Observable result: the kawaii cat UI elements appear in place of the default interface while playing.
• Access state: external — this happens inside Minecraft 26.3 under the player's own control, not inside this product.
• Failure/recovery: if the pack does not appear correctly, the player returns to the creator's pack output; the product's responsibility ends at producing a complete, version-targeted pack.
• Continuation: the player continues playing with the themed interface.
• Acceptance: the themed UI is visible in-game in Minecraft 26.3.

4. User Personas

Texture Pack Creator

Product context. The Texture Pack Creator is the requester's own role: someone who wants a Minecraft UI texture pack for game version 26.3 with a cute kawaii cat theme. They are comfortable with pixel art and mod culture, and they treat the tool as a toy box rather than a dashboard. Their work is durable — it spans sessions and must be resumable.

Primary goal. A complete, version-targeted kawaii cat UI texture pack.

Distinct accepted responsibilities. This persona produces the pack's UI element textures with the cute kawaii cat theme, organizes those textures within the pack, and packages them into a Minecraft texture pack targeting version 26.3. They also establish and verify their own identity so that this work stays bound to them across sessions. No other accepted persona produces or packages textures.

Relevant inputs and decisions. Which UI element category to work on next (hearts, hotbar slots, inventory grid, crosshair, recipe book, and the other UI element surfaces in scope); whether a produced texture's kawaii cat treatment is right; whether to arrange, remove, or replace a texture; when the texture set is complete enough to package; whether to re-package after adjustments.

Interactions with other accepted participants. The creator's finished pack is the input to the Pack User's in-game outcome. The creator does not act inside Minecraft; the Pack User does. The creator's own handoff is the packaged, version-targeted pack.

Observable success. A pack exists that covers UI elements, carries the cute kawaii cat theme, targets version 26.3, and is reported ready to apply in Minecraft 26.3.

Constraints carried from source. Scope is limited to UI elements; the target is version 26.3; the theme is cute kawaii cat. These are hard constraints, not preferences.

Pack User

Product context. The Pack User is a player who applies the finished pack in Minecraft 26.3. Their interaction with the product's output happens in-game, on an external surface the product does not own.

Primary goal. The themed UI appearing correctly while playing.

Distinct accepted responsibilities. This persona applies the finished pack in Minecraft 26.3 and observes the kawaii cat UI elements in place of the default interface. They do not produce, organize, or package textures, and they hold no identity in this product.

Relevant inputs and decisions. Whether to apply the finished pack; whether the themed interface appears correctly in-game.

Interactions with other accepted participants. The Pack User receives the Texture Pack Creator's packaged output. The creator's responsibility ends at producing a complete, version-targeted pack; the Pack User's outcome is the in-game result.

Observable success. The kawaii cat UI elements are visible in place of the default interface while playing Minecraft 26.3.

Constraints carried from source. The pack is applied in Minecraft 26.3 specifically; the visible result is the cute kawaii cat UI theme.

5. Core User Flows

Flow 1 — A new Texture Pack Creator enrolls and begins a pack

1. The visitor arrives on Landing and reads what the product generates (a Minecraft UI texture pack), the theme it applies (cute kawaii cat), and the version it targets (Minecraft 26.3). The hero wordmark letters pop in with a 60ms stagger and the cat ears twitch once; the paw-print marquee scrolls along the lower edge and pauses on hover.
2. The visitor chooses Start a texture pack from the milk-white sticker card holding the MINECRAFT 26.3 version chip.
3. Because no identity exists yet, the visitor is routed to Sign Up.
4. The visitor enters credentials and submits. The submission control shows an in-progress state.
5. Observable result: the identity is established, a session starts, and the creator is routed into Texture Studio.
6. Failure/recovery: if the credentials are invalid or incomplete, the error is reported inline against the offending field and the entered values are preserved so the creator can correct and resubmit. If the visitor already has an identity, they are routed to Login instead of creating a duplicate.
7. Next step: the creator begins producing UI element textures (Flow 3).

Flow 2 — A returning Texture Pack Creator verifies and resumes

1. The returning creator arrives on Landing and proceeds to verification.
2. On Login, the creator submits credentials. Protected state remains unavailable until verification succeeds.
3. Observable result: a session is established and the creator is returned to the protected work they were resuming — Texture Studio or Pack Builder.
4. Failure/recovery: unrecognized credentials are reported without revealing which field was wrong; the entered identifier is preserved. The creator may retry, enroll on Sign Up, or return to Landing.
5. Next step: the creator resumes producing textures or packaging the pack.

Flow 3 — The Texture Pack Creator produces and organizes UI element textures

1. The creator is in Texture Studio with an established session. The MINECRAFT 26.3 version chip is pinned to the pack card.
2. The creator selects a UI element category — hearts, hotbar slots, inventory grid, crosshair, recipe book, or another UI element surface in scope.
3. The creator produces the texture with the cute kawaii cat theme.
4. Observable result: the texture appears in the grid as a magnified pixel-art tile with a kawaii cat face baked into the actual texture, its category recorded, and a soft pink glow behind it.
5. The creator organizes the produced textures — arranging, removing, or replacing them within the pack.
6. Failure/recovery: a texture that cannot be produced is reported against its category tile with a retry action; already-produced textures are unaffected. The creator can retry, choose a different category, or continue organizing what succeeded.
7. Next step: once the texture set is ready, the creator moves to Pack Builder (Flow 4).

Flow 4 — The Texture Pack Creator packages the version-targeted pack

1. The creator opens Pack Builder with an established session. The pack summary shows the MINECRAFT 26.3 version chip and the included UI element textures.
2. The creator reviews which UI element textures are included.
3. The creator packages the themed UI textures into a Minecraft texture pack targeting game version 26.3.
4. Observable result: the pack is assembled, reported as targeting version 26.3, and marked ready to apply in Minecraft 26.3 with the mint accent.
5. Failure/recovery: if the pack is incomplete, the summary names the missing UI element textures and links back to Texture Studio. If packaging fails, the failure is reported with a retry action and the produced textures are preserved.
6. Next step: the creator returns to Texture Studio to adjust textures and re-packages, or hands the finished pack to the player.

Flow 5 — The Pack User applies the finished pack in Minecraft 26.3

1. The Pack User has the finished pack produced by the Texture Pack Creator.
2. The Pack User applies the pack in Minecraft 26.3, under their own control and outside this product.
3. Observable result: the kawaii cat UI elements appear in place of the default interface while playing.
4. Failure/recovery: if the pack does not appear correctly, the Pack User returns to the creator's pack output; the product's responsibility ends at producing a complete, version-targeted pack.
5. Next step: the Pack User continues playing with the themed interface.

6. Visuals Colors and Theme

The creative direction is authoritative for this section: kawaii maximalism after Jessica Walsh — a candy-pink texture studio where the cat is the interface. The muse is Jessica Walsh; the headline is that the UI itself becomes the kawaii cat, so the landing page reads as a branded world rather than a generic SaaS tool while still supporting a real texture studio and pack builder behind login.

Colour tokens

Light mode (the product's default surface — this pack lives on a pink ground):

The ground never goes white. The primary never drifts toward blue-indigo. The hero band is full-bleed hot pink #FF3D8B with no white anywhere; the texture-grid band sits on blush #FFE9F2; the pack-builder band is mint #7BE0C4; the footer band is ink plum #2A0E22.

Typography

• Headings: Unbounded, 800 weight, sentence case, tight tracking -0.02em, line-height 0.95–1.05 so stacked headlines feel like stickers.
• Sub-headings / kawaii labels: Manrope 800, uppercase, small sizes, +0.12em tracking — for labels such as UI TEXTURES and VERSION 26.3.
• Body: Manrope 500/600 at 17–19px with 1.65 line-height.
• Numerals and version strings: Manrope 700 with tabular figures, so 26.3 aligns cleanly in the version chip.
• Scale: 1.333 modular — 56px mobile → 128px desktop for the hero wordmark; 32 / 24 / 19 / 17 / 14 / 12 for section titles, card titles, body, small labels, and metadata.

Shape language

Chunky rounded rectangles with 20–32px radii. Capsule buttons. Sticker-like badges with 2px ink outlines and offset hard shadows (4px 4px 0 #2A0E22). Cat-ear silhouette cut-outs on primary cards and the wordmark. Small paw and whisker motifs as inline SVG decorations, never as image files. No sharp corners anywhere except the deliberate hazard-style tag on the pack version chip.

Spacing rhythm

Colour-blocked sections stacked vertically, each band with generous internal padding so the sticker tiles breathe. Asymmetric editorial grid inside each band — headline offset left, supporting art bleeding off the right edge. Cards are sticker tiles in a 2/3/4-column responsive grid.

Imagery style

A custom kawaii cat illustration system: a round-faced cat with pink cheeks and a single whisker curl, drawn as flat vector with 2px ink outlines, reused across every UI texture preview — hearts as cat faces, hotbar as a row of paw-print slots, inventory as a cat-shaped grid, crosshair as a whisker star. Texture previews are rendered as magnified pixel-art tiles with a soft pink glow behind them. No stock photography, no 3D renders, no gradient blobs — the cat and the colour blocks are the imagery.

7. Signature Design Concept

The public entry is a full-bleed hot-pink band with no white anywhere, composed as a branded world rather than a centred hero.

An oversized Unbounded wordmark 'KAWAII CAT UI' spans nearly the full viewport width in ink plum #2A0E22, scaling from 56px on mobile up to 128px on desktop with clamp(...). Two rounded cat ears rise out of the K and the I, and a whisker stroke twitches once on load.

Directly beneath the wordmark, a milk-white sticker card tilted -2deg holds the pack version chip 'MINECRAFT 26.3' as a hazard-style tag with a cat-ear notch, alongside the primary call to action 'Start a texture pack' in a mint capsule.

To the right, bleeding off the viewport edge, a giant cat-face mascot illustration overlaps the pink band and the blush band below it, cropped so only the left three-quarters is visible. A slow marquee ribbon of paw prints runs along the bottom edge of the pink band.

Nothing is centred, nothing is symmetrical, nothing is blue. The composition recomposes only accepted content — the product's purpose, its theme, its version target, and its entry actions — and introduces no new behaviour, page, or destination.

8. Interaction Model & Motion Direction

Interaction Model: Animated Motion Tempo: expressive Hero Dimensionality: layered_2d

Landing Hero Motion Brief

• Focal subject: the oversized 'KAWAII CAT UI' wordmark with cat ears rising from the K and I, and the giant cat-face mascot bleeding off the right edge.
• Input → transformation → outcome thesis: on load, the wordmark letters pop in sequentially with a 60ms stagger and a slight overshoot, the cat ears twitch once, and the paw-print marquee begins its slow scroll — transforming a still pink band into a living kawaii world that presents the product's purpose, theme, and version target before any protected work.
• Motion vocabulary: bouncy scale-ins and colour flips, capped at expressive. Texture tiles scale to 1.04 and flip their background from milk to hot pink on hover. Section headings wipe in with a colour-block sweep. The marquee pauses on hover.
• Composed first frame: the full-bleed hot-pink band with the wordmark already spanning the viewport, the tilted milk-white sticker card holding the MINECRAFT 26.3 chip and the mint 'Start a texture pack' capsule, the cat-face mascot cropped at the right edge, and the paw-print ribbon resting along the bottom edge.
• Reduced-motion state: all motion is disabled or converted to a static stacked layout. The marquee becomes a horizontally scrollable row so every item can be brought fully into view. Tile hover scale and colour flip are suppressed; tiles remain fully readable and selectable.

9. Non-Functional Requirements

NFR-1 — Version targeting integrity. Every pack produced by the product carries the target version 26.3, and that target is never silently changed. Provenance: explicit constraint. Rationale: the pack must apply correctly in Minecraft 26.3.

NFR-2 — UI-element scope integrity. The product's texture coverage is limited to UI elements. Provenance: explicit constraint. Rationale: the requested pack is a UI texture pack, not a block, item, mob, or world texture pack.

NFR-3 — Theme integrity. Produced UI element textures carry the cute kawaii cat theme. Provenance: explicit constraint. Rationale: the theme is the product's identity, not a selectable option.

NFR-4 — Durable creator work. A creator's produced textures and packaged pack persist across sessions and remain bound to the correct creator. Provenance: required_inference from the accepted durable pack work. Rationale: the creator's work spans sessions and must be resumable.

NFR-5 — Readable text and controls at every viewport. Headlines, wordmarks, labels, numbers, and cards' text and controls stay entirely inside the viewport and their container at 375px, 768px, and 1280px, wrapping or scaling (for example font-size: clamp(...) with its mobile size) to fit. No other element covers any part of them. Imagery, decoration, and motion may be cropped, bled off an edge, rotated, overlapped, or cut as the creative direction asks, as long as they cover no readable text or control. Provenance: creative direction, authoritative for presentation. Rationale: the direction's decorative bleeding must never compromise legibility.

NFR-6 — Reduced-motion usability. Under prefers-reduced-motion, all motion is disabled or converted to a static stacked layout, and the marquee becomes a horizontally scrollable row so every item can be brought fully into view. Provenance: creative direction. Rationale: the expressive motion must remain accessible.

NFR-7 — Responsive navigation. The sticky top bar collapses to a full-width drawer under 768px. Provenance: creative direction. Rationale: the navigation must remain usable on narrow viewports.

NFR-8 — No blue-on-white treatment. The product never uses blue, indigo, or violet primaries, and never lets the ground go white. Provenance: creative direction. Rationale: the kawaii cat identity is carried by the pink ground and hot pink primary.

10. Tech Stack

• Frontend: React, with the kawaii cat illustration system drawn as inline SVG and flat vector rather than image files.
• Backend: Python / FastAPI, serving the creator's durable texture and pack work, identity, and the packaging operation.
• Storage: persistent storage for creator identities, produced UI element textures, and packaged packs, so that durable work survives across sessions.
• Containerization: Docker with docker-compose.yml as the inventory of runnable services. The frontend and the FastAPI backend run as the project's services; the packaging work is handled within the existing backend process rather than as a separate container, since no independent queue or worker is required by the accepted workflows.
• Deployment: Kubernetes is not required by the accepted workflows and is not included.

No source-specified technology was overridden; the stack above reflects the project's accepted delivery shape (custom UI, application-owned identity, backend integration required).

11. Assumptions and Constraints

Assumptions

• A-1: The creator's durable work — produced textures and packaged packs — is stored by the product so it can be resumed across sessions. Label: required_inference from the accepted durable pack work.
• A-2: Enrollment is self-service with no invitation or provisioning boundary, as established by the accepted planning scope. Label: required_inference.
• A-3: The Pack User's application of the pack happens inside Minecraft 26.3, outside this product. Label: required_inference from the accepted in-game outcome.
• A-4: No differentiated permissions, roles, or visibility controls exist over shared product state; each creator works on their own textures and packs. Label: required_inference — no source establishes differentiated control.
• A-5: The UI element categories named in this document — hearts, hotbar slots, inventory grid, crosshair, recipe book — are the surfaces previewed by the creative direction; the product covers UI elements generally, and this list is illustrative of the interface surfaces in scope rather than an exhaustive enumeration. Label: required_inference.

Constraints

• C-1: Textures must target Minecraft game version 26.3. (explicit)
• C-2: Theme must be cute kawaii cat. (explicit)
• C-3: Scope is limited to UI elements. (explicit)
• C-4: The product does not own Minecraft; applying the finished pack and seeing the themed UI in-game is the Pack User's own action on an external surface. (source-backed boundary)
• C-5: The creative direction is authoritative for palette, typography, shape language, layout, motion, and imagery; explicit user colour, font, and image-reference instructions take precedence over it. (creative direction)

12. Glossary

• Texture pack — a set of replacement textures applied in Minecraft to change the game's appearance; here, one that replaces UI elements with a cute kawaii cat theme and targets version 26.3.
• UI element — an interface surface of Minecraft that the pack replaces, such as hearts, hotbar slots, the inventory grid, the crosshair, or the recipe book. The product's scope is limited to these.
• Kawaii cat theme — the product's committed visual identity: a round-faced cat with pink cheeks and a single whisker curl, drawn as flat vector with 2px ink outlines, baked into the actual UI textures.
• Version 26.3 — the Minecraft game version the pack targets, shown throughout the product as the MINECRAFT 26.3 version chip.
• Texture Pack Creator — the accepted persona who produces and organizes the pack's UI element textures and packages them into a version-targeted pack.
• Pack User — the accepted persona who applies the finished pack in Minecraft 26.3 and sees the kawaii cat UI elements in place of the default interface.
• Texture Studio — the protected recurring workspace where the creator produces and organizes the pack's UI element textures.
• Pack Builder — the protected focused owner for packaging the themed UI textures into a Minecraft texture pack targeting version 26.3.
• Version chip — the MINECRAFT 26.3 hazard-style tag with a cat-ear notch, pinned to the corner of every pack card so version targeting is always visible.
• Sticker tile — a card in the texture grid with a 2px ink outline and a 4px offset hard shadow, flipping from milk-white to hot pink on hover, showing a magnified pixel-art preview of the UI texture it represents.