/* base.css -------- Global reset, CSS custom properties (design tokens), and base typography. Every other stylesheet builds on top of the variables defined here, so if you want to re-theme the site later, this is the file to edit. */ /* --- Reset ---------------------------------------------------------- */ /* A small, modern reset. We are not using a big third-party reset because the brief says "no frameworks" - this covers the common gotchas. */ *, *::before, *::after { box-sizing: border-box; } html, body, h1, h2, h3, h4, p, ul, ol, figure, blockquote { margin: 0; padding: 0; } ul, ol { list-style: none; } img, picture, svg { max-width: 100%; display: block; } a { color: inherit; text-decoration: none; } button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; } /* Respect users who have asked their OS to reduce motion */ @media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; } } /* --- Design tokens --------------------------------------------------- CSS custom properties ("CSS variables") let us define a value once and reuse it everywhere. Changing a color or spacing value here updates the whole site, instead of hunting through every file. ------------------------------------------------------------------------ */ :root { /* Colors: near-black theme with a single bright teal accent used consistently for links, tags, and highlights. */ --color-bg: #0a0b0d; --color-bg-alt: #121317; --color-surface: #121317; --color-surface-raised: #17181d; --color-border: #232529; --color-text: #f4f5f7; --color-text-muted: #9a9ea6; --color-accent: #2fe3ff; --color-accent-hover: #6aecff; --color-accent-2: #2fe3ff; --color-accent-soft: rgba(47, 227, 255, 0.14); --color-focus: #6fc6ff; /* Type scale. Space Grotesk/Inter are loaded via Google Fonts tags in each page's - the system-font fallbacks keep the page usable if that request fails (e.g. no internet when opened via file://). */ --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; --font-heading: "Space Grotesk", var(--font-body); --fs-sm: 0.875rem; --fs-base: 1rem; --fs-md: 1.125rem; --fs-lg: 1.375rem; --fs-xl: 1.75rem; --fs-2xl: 2.25rem; --fs-3xl: 3rem; /* Spacing scale, used for margin/padding/gap so spacing stays consistent */ --space-xs: 0.5rem; --space-sm: 1rem; --space-md: 1.5rem; --space-lg: 2.5rem; --space-xl: 4rem; --space-2xl: 6rem; --radius-sm: 2px; --radius-md: 4px; --max-width: 1200px; } /* --- Base typography -------------------------------------------------- */ html { scroll-behavior: smooth; } body { background-color: var(--color-bg); color: var(--color-text); font-family: var(--font-body); font-size: var(--fs-base); line-height: 1.6; } h1, h2, h3, h4 { font-family: var(--font-heading); line-height: 1.2; font-weight: 600; letter-spacing: -0.01em; } h1 { font-size: var(--fs-3xl); } h2 { font-size: var(--fs-2xl); } h3 { font-size: var(--fs-lg); } p { color: var(--color-text-muted); } /* Visible focus states for keyboard users - required for accessibility. Do not remove the outline without replacing it with something equally visible. */ a:focus-visible, button:focus-visible, input:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 2px; } /* Utility class for visually hiding content while keeping it available to screen readers (used for skip links / labels). */ .visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }