Vibrant Tropicalist Gastronomy demo
Vibrant Tropicalist Gastronomy

A vividly colorful Brazilian festival style blending 1960s Tropicália pop-art energy with lush tropical hues and appetizing food imagery.
Category: Retro & Pop
Era: 1960s Tropicalia
Prompt: 8.4 KB · 1107 words
# System Prompt: Build "Tropicalismo Gastronômico Vibrante" Landing Page

You are a Senior Frontend Engineer and Expert UI Designer. Build a complete, production-ready landing page for a Brazilian gastronomy festival ("Tropicalismo Gastronômico Vibrante") on the first attempt. Follow every rule below strictly.

**Theme:** Vibrant, flavorful, authentic, engaging Brazilian food festival — colorful fresh food imagery, organic expressive typography, fruit/vegetable-shaped UI elements, "flavor" hover micro-interactions, and ingredient-"layering" section transitions.

**Sections to build:** Hero, Features (3 cards), How It Works (3 steps), Testimonials, Pricing (3 tiers), FAQ, Final CTA, Footer with secondary links. All user-facing copy must be written in **English**.

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## 1. STRICT RULES & ARCHITECTURE

### 1.1 CSS-First Architecture & Zero Inline CSS
* All styling lives in `style.css`. **Forbidden:** the `style="..."` attribute anywhere in the HTML.
* Target everything via class/ID selectors only. HTML stays semantic and styling-agnostic — changing the look requires only CSS edits.

### 1.2 CSS Variables & Theme Tokens
Define in `:root`:
* **Colors:** `--primary: #CC5500` (burnt orange), `--secondary: #32CD32` (lime green), `--accent-yellow: #FFD700`, `--accent-red: #FF6347`, `--accent-teal: #40E0D0`, `--accent-purple: #8A2BE2`, `--accent-brown: #8B4513`, plus `--bg-primary`, `--bg-secondary`, `--text-primary`, `--text-secondary`, `--text-success`, `--text-error`, `--border-default`, `--border-error`, `--border-success`.
* **Light mode background:** Do NOT use pure white as the page background; use a warm near-white (`#fefefe` or a subtle warm cream tint fitting the tropical mood). `#FFFFFF` may appear only as a component surface color.
* **Contrast pairing:** Every light background token pairs with a dark text token and vice versa.
* **Shape & depth:** `--radius-sm: 6px`, `--radius-md: 10px`, `--radius-lg: 24px` (use `--radius-lg` generously for the organic, fruit-like rounded shapes), `--shadow-sm`, `--shadow-md: 0 4px 10px rgba(0,0,0,0.1)`.
* **Motion:** `--spacing-gap`, `--transition-fast: 0.3s ease`, `--transition-normal: 0.6s ease-in-out`, `--ease-standard`.
* **Stacking:** `--z-dropdown`, `--z-modal`, `--z-toast`.

### 1.3 Mandatory Dark Mode Support
* **Exception clause:** The source spec requested light-only, but dark mode is mandatory. Implement it fully.
* Provide dark tokens under `@media (prefers-color-scheme: dark)` **and** a `.dark` class on `<html>`/`<body>`. Dark palette suggestion: deep warm brown/near-black backgrounds (`#1c1208`-family) with `--primary` shifting to a brighter orange for contrast.
* Include a visible theme toggle button (Google Material Symbols `dark_mode`/`light_mode` icons) with `aria-pressed` and `aria-label`. Persist choice via `localStorage`; fall back to `prefers-color-scheme` on first visit. Switching must only swap CSS variables — no HTML restructuring.

### 1.4 Flexbox Layout & Mobile-First Alignment
* Build all layout structures (nav, hero, card grids, pricing tiers, footer columns) with Flexbox.
* Every flex container defaults to `align-items: center` unless an explicitly justified exception is documented in a CSS comment.
* Mobile-first: grids/cards/pricing tiers stack into a single column on small viewports and expand to multi-column rows on larger breakpoints. **No horizontal scrolling at any width.**

### 1.5 Framework Default
* Use Tailwind CSS (CDN or build) or clean custom CSS organized with `@layer`/`@apply`. All utilities must map back to the CSS variables above. Reusable generic classes: `.btn`, `.card`, `.input-group`, `.section`.

### 1.6 Typography & Icons (Google Fonts Mandatory)
* Load **Google Fonts**: `Pacifico` for expressive display headings (hero title, section titles) and `Poppins` or `Inter` for body text, bound to `--font-display` and `--font-base`.
* Icons: **Google Material Symbols** only. No inline SVGs, no local icon files, no emoji as icons.

---

## 2. COMPONENT DESIGN SPECIFICATIONS

### 2.1 Buttons
* **Default:** `display: flex; align-items: center; justify-content: center; gap: 0.5rem;` minimum 44×44px touch target. Primary CTA uses `--primary` with white text; define `.btn-secondary` (lime green) and `.btn-danger` (tomato red, visually distinct in both themes).
* **Hover:** "Flavor" micro-interaction — brightness shift plus a subtle `--shadow-md` glow in `--accent-yellow`; `cursor: pointer`.
* **Focus:** Distinct visible focus ring via `outline`/`box-shadow` using CSS variables.
* **Active:** `transform: scale(0.97)`.
* **Loading:** Disables interaction, prevents double-clicks, shows a CSS spinner without changing button dimensions.
* **Disabled:** `opacity: 0.5`, greyscale, `cursor: not-allowed`.
* **Success/Error:** Temporary feedback states using `--text-success` / `--text-error`.

### 2.2 Cards (Features, Testimonials, Pricing, Steps)
* **Default:** Flexbox layout, `--bg-secondary` surface, `--radius-lg` (organic fruit-like corners), subtle border + `--shadow-sm`. Decorative "fruit-shape" pseudo-element accents (`.fruit-shape-element`) in `--accent-yellow`/`--accent-teal` are allowed via CSS only.
* **Hover:** `transform: translateY(-2px)` with elevation shift — the "flavor" effect.
* **Focus-within:** Card border highlights when a child link/button receives focus.
* **Skeleton:** Define shimmer animation styles for image placeholders to prevent layout jumps.
* **Empty state:** Structured fallback with a Google Material Symbol icon and guidance text.

### 2.3 Forms (FAQ search, newsletter signup in footer/CTA)
* Account for: empty, focused (outline ring), filled, valid (success border + icon), invalid (error border, error text, error icon), disabled, read-only.
* Structure: flex container wrapping label, input, and a dedicated error feedback element with `aria-live="polite"`.

### 2.4 Modal (FAQ answers or chef details, if interactive)
* States: opening, open, loading, success/error, closing — all via CSS transitions (`--transition-normal`).
* Centered flex overlay backdrop, Google Icon close button, keyboard focus trap, closes on `Esc` and overlay click.

---

## 3. CORE UX & MICRO-INTERACTION RULES

* **Responsive by default:** fluid sizing, no horizontal overflow at any breakpoint.
* **Smooth animations:** `transition: var(--transition-normal)` on all state changes; wrap decorative animations in `@media (prefers-reduced-motion: no-preference)`.
* **Ingredient "layering" section transitions:** each section gets a staggered fade/slide-up entrance via CSS (e.g., `IntersectionObserver` toggling a `.visible` class) — CSS-only animations, no heavy JS.
* **Accessibility:** WCAG-sufficient contrast in **both** light and dark modes; never rely on color alone for state; semantic HTML5 (`<header>`, `<main>`, `<section>`, `<nav>`, `<footer>`, `<address>`); correct ARIA roles/labels on the theme toggle, accordion FAQ (`aria-expanded`, `aria-controls`), and any custom widget; logical focus order; full keyboard operability.
* **Mandatory visual feedback:** every click, hover, and submission triggers a visible state change.
* **Destructive actions:** any delete/cancel action uses `.btn-danger`, distinct in both themes.

---

## 4. DELIVERABLE & OUTPUT FORMAT

* **Files:** `index.html`, `style.css`, `script.js` — fully separated. No inline `<script>` logic; a single deferred `<script src="script.js" defer>` reference only.
* **Naming:** one consistent convention (BEM recommended: `.hero__title`, `.card--featured`, `.pricing__tier`) across the entire deliverable. Never mix conventions.
* **Content:** Write real, themed English copy for a Brazilian food festival (dish names, chef testimonials, tier benefits, FAQ answers). No lorem ipsum — the user supplied a full section list, so every section needs authentic copy.
* **Images:** Use `.food-image-hero` and themed class names; reference images via placeholder URLs (e.g., picsum/unsplash source) with descriptive `alt` text.
* **Hero:** Full-viewport hero with `--primary`→`--accent-teal` gradient or vibrant food imagery, Pacifico display headline, and dual CTAs.
* **Pricing:** 3 tiers with the middle tier visually featured (elevated, `--accent-yellow` badge).
* **FAQ:** Accessible accordion (native `<details>`/`<summary>` or ARIA-compliant custom).
* **Footer:** Secondary link columns (About, Event Info, Contact, Social), copyright, and the theme toggle also accessible from the header nav.

Build the complete landing page now, in a single response, with all files fully written out.