foundation.app DESIGN.md

Overview

foundation.app presents a predominantly dark surface treatment in the captured pages. The system is anchored by #000000, #171717, and #ffffff, with typography led by Font. The guide below names reusable design roles only where the captured evidence supports them.

The reference set uses representative captured pages. It is a design reference, not a claim about the site’s private source code or a complete responsive specification.

Design tokens

The token names are practical labels for the recorded values. They are not claims about the source site’s variable names.

Colors

token	value	observed use
color.text	#000000	text on page content
color.text	#171717	text on page content
color.surface	#ffffff	surface on page content

Typography

token	font family	size	weight	line height	letter spacing	observed use
type.body-16px	Font	16px	400	normal	normal	<div>, <a>, and <div> in the main
type.display-860px	Font	860px	600	normal	-68.8px	<div>
type.utility-12px	Font	12px	400	normal	normal	<div> and <span>
type.body-16px	Font	16px	500	normal	normal	<a>, <a> in the main, <div> in the main, and <button> in the button
type.body-14px	Font	14px	500	normal	normal	<a> and <button> in the button
type.body-16px	Font	16px	400	28px	normal	<p> and <div>
type.body-14px	Font	14px	400	21px	normal	<h2>, <a>, and <div>
type.utility-12px	Font	12px	400	21px	normal	<p>
type.display-32px	Font	32px	500	40px	-0.64px	<div>, <h2>, and <h3>
type.body-14px	Font	14px	400	16px	normal	<div>
type.heading-14px	Font	14px	600	normal	normal	<h2> and <div> in the main
type.heading-24px	Font	24px	600	normal	-0.24px	<div>
type.display-40px	Font	40px	500	44px	-0.8px	<a>
type.display-32px	Font	32px	600	normal	-0.64px	<h1> in the main
type.body-20px	Font	20px	400	35px	normal	<div>
type.heading-16px	Font	16px	600	16px	normal	<button> in the button and <div>
type.body-14px	Font	14px	400	normal	normal	<div>
type.body-24px	Font	24px	500	normal	-0.24px	<h2> and <h1>
type.body-16px	Font	16px	400	24px	normal	<div> and <a>
type.heading-14px	Font	14px	600	17.5px	normal	<div> and <button> in the button

Spacing

value	property	observed element
16px 20px	padding	page content
0px 48px	padding	page content
0px 0px 0px -68.8px	margin	page content
57.25px 48px 57.25px 0px	padding	page content
8px 48px	padding	page content
16px 0px	padding	page content
48px 0px 48px 48px	padding	page content
24px 0px	padding	page content

Shape and depth

The captured pages use 1px 0px 0px solid none none 0px, 1px solid 9999px, 0px none 8px, 1px 0px solid none 0px, 0px none 9999px, 0px none 16px, 1px solid 8px, and 0px none 12px border treatments. Recorded gradients include linear-gradient(rgb(0, 0, 0), rgb(0, 0, 0)), linear-gradient(rgba(0, 0, 0, 0) 23.96%, rgba(0, 0, 0, 0.85) 79.69%), and linear-gradient(135deg, rgb(255, 246, 31), rgb(25, 255, 62)). Recorded shadows include rgba(0, 0, 0, 0.05) 0px 0px 0px 1px inset, rgba(0, 0, 0, 0.15) 0px 0px 2px 0px, rgba(0, 0, 0, 0.07) 0px 4px 7px 0px, rgba(0, 0, 0, 0.15) 0px 12px 40px 0px, and rgba(0, 0, 0, 0.02) 0px 0px 4px 0px, rgba(0, 0, 0, 0.02) 0px 8px 16px 0px, rgba(0, 0, 0, 0.04) 0px 16px 32px 0px.

Colors

The visual system is predominantly dark surface treatment. Surface colors include #ffffff. Text colors include #000000 and #171717. Keep image-derived colors separate from interface colors.

Typography

The captured type system uses Font. The table records measured size, weight, leading, and tracking where available; it does not establish licensing or a complete fallback stack.

Layout

The captured pages use values such as 16px 20px, 0px 48px, 0px 0px 0px -68.8px, 57.25px 48px 57.25px 0px, and 8px 48px for padding and margin. These are measured usages, not a resolved scale. The available evidence does not establish container widths, grid rules, or breakpoints.

Visual language

The captured visual language is predominantly dark surface treatment. Surface treatment centers on #ffffff. Depth is supported by the returned gradients and shadows.

Components and states

The captured pages include repeated styling on <div>, <h2>, <a>, <h1>, <button>, <p>, <span>, and <h3> elements. The evidence does not identify reusable component boundaries or interaction states. Treat loading, focus, hover, pressed, error, and disabled states as implementation work to validate rather than as captured facts.

Responsive behavior

The captured token set does not establish breakpoint values or mobile behavior. Validate stacking, navigation changes, image treatment, and type scaling against the representative captures before implementing a responsive adaptation.

Practical implementation guidance

• Preserve the dark surface relationship and the measured type hierarchy before adding decorative treatment.
• Start from the returned typography, spacing, color, and border values; name any new scale or semantic role as an adaptation rather than as a source fact.
• Keep the captured font families separate from licensing decisions.
• Use screenshots to validate component anatomy, responsive behavior, focus treatment, and motion before shipping.
• Avoid introducing gradients or shadows beyond the captured treatment; the returned evidence includes those treatments.

Scope note

The guide uses representative captured pages. The evidence supports the values and observations above; it does not establish component semantics, interaction states, motion timing, breakpoint rules, font licensing, or a complete source stylesheet.