--- version: "alpha" name: "Blueprint / Engineering" description: "Blueprint engineering interface. Ideal for landing pages, saas. AI-ready template." colors: primary: "#1E5DA2" secondary: "#FFFFFF" tertiary: "#A8D5FF" neutral: "#5B9BD5" surface: "#2E4053" accent: "#E8E8E8" typography: h1: fontFamily: monospace/technical fontSize: 2.25rem fontWeight: 700 body-md: fontFamily: monospace/technical fontSize: 1rem fontWeight: 400 label-caps: fontFamily: monospace/technical fontSize: 0.75rem fontWeight: 500 components: button-primary: backgroundColor: "{colors.primary}" textColor: "{colors.neutral}" padding: 12px --- ## Overview Blueprint engineering interface. Ideal for landing pages, saas. AI-ready template. The blueprint is an accident of chemistry turned into an entire visual language. Cyanotype — invented by John Herschel in 1842 — was never meant to be beautiful. It was cheap reproduction: coat paper with iron salts, lay a translucent drawing on top, expose to sunlight, wash. White lines on Prussian blue. Architects and engineers used it for decades because it was fast and expendable. The originals stayed safe; the blueprints got marked up, folded, rained on. What's interesting is how the constraints of the process created the aesthetic. No fills, no gradients — just line weight and annotation. Dimension markers, section cuts, leader lines pointing to callouts. Everything exists to communicate measurement and intent. The drawing isn't the building; it's the instruction set. That's exactly why it works as a design style now. It signals process visibility — the idea that you're looking behind the curtain at how something gets made. There's an honesty to it. No decoration for its own sake. Every mark has a job. When brands adopt blueprint aesthetics, they're borrowing that credibility: we think precisely, we build deliberately, we show our work. - Density: 7/10 — Compact - Variance: 2/10 — Structured - Motion: 6/10 — Expressive - **Style:** Technical, Precise, Blueprint, Engineering - **Keywords:** Technical blueprint, white lines on blue, dimension markers, architectural symbols, drafting grid, semi-circular timeline, engineering precision - **Era:** Technical Engineering - **Light/Dark:** ✓ Full / ✓ Full ## Colors - **Blueprint Blue** (#1E5DA2) — Accent highlight, links and focus states - **White Lines** (#FFFFFF) — Light surface, card backgrounds - **Light Blue** (#A8D5FF) — Accent highlight, links and focus states - **Steel Blue** (#5B9BD5) — Accent highlight, links and focus states - **Dark Slate** (#2E4053) — Deep contrast surface - **Light Grey** (#E8E8E8) — Secondary text, borders, muted elements ## Typography - **Display / Hero:** monospace/technical — Weight 700, tight tracking, used for headline impact - **Body:** monospace/technical — Weight 400, 16px/1.6 line-height, max 72ch per line - **UI Labels / Captions:** monospace/technical — 0.875rem, weight 500, slight letter-spacing - **Monospace:** monospace/technical — 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 Flat uniform technical lighting, line drawing animations (stroke-dasharray), dimension marker reveals, grid fade-in, technical precision transitions - **Physics:** Spring — stiffness 120, damping 20. Confident, weighted transitions. - **Entry animations:** Fade + translate-Y (16px → 0) over 480ms ease-out. Staggered cascades for lists: 100ms between items. - **Hover states:** Scale(1.03) + shadow lift over 200ms. - **Page transitions:** Fade + slide (300ms). - **Performance:** Only transform and opacity animated. No layout-triggering properties. ## Shapes Base corner radius: 8px. See rounded tokens in front matter for the full scale. ## Components - **Primary Button:** Subtly rounded (0.5rem) 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:** Subtly rounded (0.5rem) 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 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 Blueprint blue background - Do White technical lines - Do Grid overlay visible - Do Dimension markers - Do Engineering precision - Do Technical typography ## Use Case Landing pages, SaaS