--- version: "alpha" name: "The Barely-There UI" description: "Interface quase inexistente inspirada em OpenAI e Perplexity. Ultra-minimal com hierarquia por opacidade, tipografia fina e zero decoracao. Prompt pronto para IA." colors: primary: "#FFFFFF" secondary: "#000000" tertiary: "#808080" neutral: "#F5F5F5" surface: "#BDBDBD" accent: "#424242" typography: h1: fontFamily: Inter fontSize: 2.5rem fontWeight: 700 body-md: fontFamily: Inter fontSize: 1rem fontWeight: 400 spacing: sm: 3.0rem md: 6.0rem lg: 12.0rem components: button-primary: backgroundColor: "{colors.primary}" textColor: "{colors.neutral}" padding: 12px --- ## Overview Interface quase inexistente inspirada em OpenAI e Perplexity. Ultra-minimal com hierarquia por opacidade, tipografia fina e zero decoracao. Prompt pronto para IA. A Interface Quase Inexistente e o novo codigo visual da seriedade tecnica em 2025-2026, adotado por gigantes da inteligencia artificial como OpenAI e Perplexity. Sinaliza que o valor do produto esta no cerebro da tecnologia, nao na maquiagem estetica. Usa opacidade como unica ferramenta de hierarquia e substitui ilustracoes por visualizacoes de dados rigorosas. - Density: 3/10 — Airy - Variance: 2/10 — Structured - Motion: 4/10 — Subtle - **Style:** Ultra-Minimal, Opacity-Driven, Data-Focused, AI-Native - **Keywords:** barely-there, ultra-thin, opacity hierarchy, single typeface, data visualization, white space architecture, cognitive reduction, AI interface, technical minimalism, high-resolution - **Era:** 2025-2026 AI-Native - **Light/Dark:** ✓ Full / ✓ Full ## Colors - **Branco Puro** (#FFFFFF) — Light surface, card backgrounds - **Preto Absoluto** (#000000) — Dark surface, primary background - **Cinza Neutro** (#808080) — Secondary text, borders, muted elements - **Cinza Claro** (#F5F5F5) — Secondary text, borders, muted elements - **Cinza Medio** (#BDBDBD) — Secondary text, borders, muted elements - **Cinza Escuro** (#424242) — Deep contrast surface ## Typography - **Display / Hero:** Inter — Weight 700, tight tracking, used for headline impact - **Body:** Inter — Weight 400, 16px/1.6 line-height, max 72ch per line - **UI Labels / Captions:** Inter — 0.875rem, weight 500, slight letter-spacing - **Monospace:** JetBrains Mono — Used for code, metadata, and technical values Scale: - Hero: clamp(2.5rem, 5vw, 4rem) - H1: 2.25rem - H2: 1.5rem - Body: 1rem / 1.6 - Small: 0.875rem ## Layout - **Grid:** CSS Grid primary. Max-width containment: 1280px centered with 1.5rem side padding. - **Spacing rhythm:** Balanced. Base unit: 0.5rem (8px). - **Section vertical gaps:** clamp(4rem, 8vw, 8rem). - **Hero layout:** Split-screen (text left, visual right). - **Feature sections:** Zig-zag alternating text+image rows. No 3-equal-columns. - **Mobile collapse:** All multi-column layouts collapse below 768px. No horizontal overflow. - **z-index contract:** base (0) / sticky-nav (100) / overlay (200) / modal (300) / toast (500). ## Elevation & Depth Opacidade como hierarquia (100% titulo, 87% corpo, 60% secundario), transicoes ultra-suaves 300ms, zero sombras, zero gradientes, espacamento arquitetonico generoso, visualizacoes de dados rigorosas substituindo ilustracoes - **Physics:** Ease-out curves, 200-300ms duration. Smooth and predictable. - **Entry animations:** Fade + translate-Y (16px → 0) over 420ms ease-out. Staggered cascades for lists: 80ms between items. - **Hover states:** Subtle color shift + shadow adjustment over 200ms. - **Page transitions:** Fade only (200ms). - **Performance:** Only transform and opacity animated. No layout-triggering properties. ## Shapes Base corner radius: 0px. See rounded tokens in front matter for the full scale. ## Components - **Primary Button:** Sharp edges (0px) shape. Accent color fill. Hover: 8% darken + subtle lift shadow. Active: -1px translate tactile press. Font weight 600. No outer glows. - **Secondary / Ghost Button:** Outline variant. 1.5px border in muted color. Text in primary color. Hover: subtle background fill. - **Cards:** Sharp edges (0px) corners. Surface background. Subtle shadow (0 2px 12px rgba(0,0,0,0.06)). 1px border stroke. - **Inputs:** Label above input. 1px border stroke. Focus ring: 2px accent color offset 2px. Error text below in semantic red. No floating labels. - **Navigation:** Primary surface background. Active item: accent color indicator. Font weight 500 when active. - **Skeletons:** Shimmer animation matching component dimensions. No circular spinners. - **Empty States:** Icon-based composition with descriptive text and action button. ## Do's and Don'ts - No emojis in UI — use icon system only (Lucide, Heroicons) - No decorative gradients — flat color only - No shadows heavier than 0 2px 8px rgba(0,0,0,0.08) - No pure black (#000000) — use off-black or charcoal variants - No oversaturated accent colors (saturation cap: 80%) - No 3-column equal-width feature layouts — use zig-zag or asymmetric grid - No `h-screen` — use `min-h-[100dvh]` - No AI copywriting clichés: "Elevate", "Seamless", "Unleash", "Next-Gen" - No broken external image links — use picsum.photos or inline SVG - No generic lorem ipsum in demos - Do Apenas UMA familia tipografica - Do Pesos ultra-finos (100-300) - Do Hierarquia por opacidade (4 niveis) - Do Maximo 3 cores - Do Zero sombras e gradientes - Do Visualizacoes de dados no lugar de ilustracoes - Do Espacamento arquitetonico generoso - Do Contraste WCAG AA verificado ## Use Case Plataformas de IA, SaaS B2B enterprise, Dashboards analiticos, Ferramentas de produtividade, Interfaces de dados