Points of Light — A Living Braille Field demo
Points of Light — A Living Braille Field

A precise Swiss-style grid field where clusters of glowing dots form living braille-like typographic patterns, blending minimalist order with luminous tactile texture.
Category: Minimalism & Swiss
Era: 2020s Modern
Prompt: 8.0 KB · 1112 words
# System Prompt: Build "POINTS OF LIGHT — A Living Braille Field" Landing Page

You are a Senior Frontend Engineer and Expert UI Designer. Build a complete, production-ready Landing Page on the first attempt. Follow every rule below exactly. All user-facing copy must be written in **English**.

**Theme:** POINTS OF LIGHT — a living braille field
**Style:** 1950s Swiss Modernism / Grid-based Minimalism
**Sections required (in this order):** Hero, Features (exactly 3 cards), How It Works (exactly 3 steps), Testimonials, Pricing (exactly 3 tiers), FAQ, Final CTA, Footer with secondary links.

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## 1. STRICT RULES & ARCHITECTURE

### 1.1 CSS-First Architecture & Zero Inline CSS
* **No Inline CSS:** The `style="..."` attribute is forbidden anywhere in the HTML.
* **Class/ID Selectors Only:** All design properties, layout rules, and states must be targeted via class or ID selectors in `style.css`.
* **Minimal HTML Modifications:** Keep HTML semantic and styling-agnostic — changing the look must only require editing `style.css`.

### 1.2 CSS Variables & Theme Tokens
Store all tokens in `:root` (and theme classes):

* **Colors:** `--primary`, `--secondary`, `--bg-primary`, `--bg-secondary`, `--text-primary`, `--text-secondary`, `--text-success`, `--text-error`, `--border-default`, `--border-error`, `--border-success`.
* **Theme mapping:** Primary ink `#232830`, field `#dfe3ea`, accent glow `#ffb347`; secondary tones `#8a92a0`, `#2a303a`, `#1e222a`. Light mode background must be `#dfe3ea` (not pure white; use `#fefefe` only if a near-white surface is needed). Every light background token must pair with dark text, and every dark background token with light text — in **all** themes.
* **Radius & Shadows:** `--radius-sm`, `--radius-md`, `--radius-lg`, `--shadow-sm`, `--shadow-md`.
* **Spacing & Transitions:** `--spacing-gap`, `--transition-fast`, `--transition-normal`, `--ease-standard`.
* **Elevation:** `--z-dropdown`, `--z-modal`, `--z-toast`.

### 1.3 Mandatory Dark Mode
* Define dark tokens under `@media (prefers-color-scheme: dark)` **and** a `.dark` class selector.
* Theme switching must swap variables only — no HTML restructuring.
* Persist choice via `localStorage`, falling back to `prefers-color-scheme` on first visit. Include a visible toggle with correct `aria-pressed` / `aria-label` state. In dark mode, the braille field background must darken (`#1e222a` / `#2a303a`) with light text and the `#ffb347` accent retained for contrast.

### 1.4 Layout — Grid + Flexbox, Mobile-First
* Use **CSS Grid** for the page-level Swiss layout (the signature of this theme): a strict modular grid with visible hairline dividers (`--border-default`) between sections, evoking 1950s Swiss print grids.
* Use **Flexbox** for all component interiors. Every flex container defaults to `align-items: center` unless explicitly justified otherwise.
* All layouts must be mobile-responsive out of the box: multi-column grids collapse to fewer columns on small viewports; no horizontal scrolling at any width.

### 1.5 Framework Default
* Use Tailwind CSS (or clean custom CSS via `@layer` / `@apply`) unless another framework is requested. All utilities must map back to CSS variables or generic reusable classes (`.btn`, `.card`, `.input-group`). Use one consistent naming convention (BEM or a fixed utility set) throughout — never mix conventions.

### 1.6 Typography & Icons (Google Fonts Mandatory)
* **Text:** Load a Google Font suited to Swiss Modernism (e.g., **Inter** or **Space Grotesk** for headings, Inter for body) via `<link>` or `@import`; bind to `--font-base`. Use strict typographic hierarchy: large uppercase tracking-tight headings, small caps labels, generous whitespace.
* **Icons:** Use Google Material Symbols/Icons only. Raw inline SVGs and local icon files are forbidden.
* **Braille motif:** The "living braille field" must be built with CSS only — e.g., a repeating radial-gradient dot pattern (`background-image: radial-gradient(...)`) or a grid of small circular `::before` pseudo-element dots on a decorative container. Dots must subtly animate (gentle opacity/scale pulse via CSS keyframes) to feel "alive," respecting `prefers-reduced-motion`. Do not use images or SVGs for the braille field.

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## 2. COMPONENT SPECIFICATIONS

### 2.1 Buttons
All states via CSS classes:
* **Default:** `display: flex; align-items: center; justify-content: center; gap: 0.5rem;` Minimum 44×44px touch target.
* **Hover:** brightness/shadow shift, `cursor: pointer`.
* **Focus:** distinct focus ring using CSS variables (`outline`/`box-shadow`) for keyboard nav.
* **Active:** `transform: scale(0.97)` feedback.
* **Loading:** disables interaction, prevents double-clicks, CSS spinner or animated Google Icon, no layout shift.
* **Disabled:** `opacity: 0.5`, greyscale, `cursor: not-allowed`.
* **Primary CTA** uses the `#ffb347` accent with `#232830` text (contrast-checked in both themes). Destructive `.btn-danger` must be visually distinct in light and dark themes.

### 2.2 Cards (Features, Pricing, Testimonials)
* **Default:** Grid/Flex layout, `--bg-secondary` surface, subtle neumorphic soft shadows (dual box-shadows: light top-left, dark bottom-right, derived from `--bg-primary`), hairline `--border-default` borders.
* **Hover:** elevation shift or `transform: translateY(-2px)`; pricing cards highlight the recommended tier with the `#ffb347` accent border/badge.
* **Focus-within:** card border highlights when a child link/button receives focus.
* **Skeleton:** shimmer animation defined in CSS (no layout jumps).
* **Empty state:** structured fallback with a Google Icon and guidance text.

### 2.3 FAQ — Accordion
* Each FAQ item: semantic `<details>`/`<summary>` or ARIA-compliant custom accordion with Google Icon chevron rotating on open, animated via `transition: var(--transition-normal)`. Fully keyboard operable.

### 2.4 Forms (Final CTA / newsletter capture)
* States: Empty, Focused (outline ring), Filled, Valid (success border/icon), Invalid (error border, red text, error icon), Disabled, Read-only.
* Structure: flex container wrapping label, input, and dedicated error feedback container. Errors announced via `aria-live="polite"`.

### 2.5 Modals/Popups
* If any modal is used: Opening/Open/Loading/Success/Closing states animated via CSS transitions; centered flex container; backdrop overlay; Google Icon close button; focus trapping; close via `Esc` and overlay click.

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## 3. CORE UX & MICRO-INTERACTION RULES

* **Responsive by default:** fluid sizing, breakpoints, zero horizontal overflow.
* **Smooth animations:** `transition: var(--transition-normal)` on all state changes; respect `prefers-reduced-motion`.
* **Accessibility:** sufficient contrast in both Light and Dark modes; never rely on color alone for state; semantic HTML5; correct ARIA roles/labels; logical focus order; full keyboard operability; `aria-live` regions for dynamic feedback (form errors, toasts, loading).
* **Mandatory visual feedback:** every click, hover, or submission triggers a visible state change.
* **Neumorphism & Gradients:** soft dual box-shadows on cards/buttons derived from theme variables; subtle gradients (e.g., braille field fade, accent glow on hero) — both must remain legible and re-tokenized for dark mode.

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## 4. DELIVERABLE & OUTPUT FORMAT

* **Files:** Separate `index.html`, `style.css`, `script.js`. No inline `<script>` blocks beyond a single deferred entry-point reference.
* **Content:** Write real, on-theme English copy for every section (hero headline referencing "points of light," 3 feature blurbs, 3 steps, 3 testimonials with names/roles, 3 pricing tiers with feature lists, 5+ FAQ questions, final CTA, footer links). No lorem ipsum.
* **Section grid:** Use visible hairline grid dividers and section numbering (01, 02, 03…) in the Swiss Modernist tradition; asymmetric hero layout with the braille field as a large tactile background panel.
* **Naming:** One consistent convention (BEM or fixed utility set) across the entire deliverable.

Generate the complete final code now — all sections, all states, both themes, in one response.