Design system

/* Roles · light (default) */
:root,
[data-theme='light'],
[data-color-zone='light'] {
  --color-bg-section: var(--color-ink);
  --color-text-primary: var(--color-ink);
  --color-text-primary-hover: var(--color-graphite);
  --color-text-secondary: var(--color-ink-64);
  --color-text-on-primary: var(--color-white);
  --color-bg-canvas: var(--color-paper);
  --color-bg-surface: var(--color-white);
  --color-bg-surface-subtle: var(--color-mist);
  --color-border-default: var(--color-ink-8);
  --color-interactive-accent: var(--color-orange);
  --color-video-track: var(--color-ink-16);
  --color-rain-icon: var(--color-ink);
  --color-footer-icon: var(--color-silver);
  color-scheme: light;
}

/* Shared roles · local text and
   backdrop in both modes */
/* Resolve tint locally · keep project accent overrides. */
:root,
[data-theme],
[data-color-zone],
:where(.skill-tag--accent),
:where(.case-study-decision-card__icon) {
  --color-bg-accent-subtle:
    color-mix(in srgb, var(--color-interactive-accent) 12%,
      var(--color-bg-surface));
}

:root,
[data-theme],
[data-color-zone] {
  --color-border-control: var(--color-text-primary);
  /* Hero frames · follow the local page or card surface */
  --color-media-frame: var(--color-bg-canvas);
  --color-focus-ring: var(--color-text-primary);
  --color-backdrop: rgb(0 0 0 / .18);
}

/* Roles · dark */
[data-theme='dark'],
[data-color-zone='dark'] {
  --color-bg-section: var(--color-night);
  --color-text-primary: var(--color-paper);
  --color-text-primary-hover: var(--color-stone);
  --color-text-secondary: var(--color-paper-64);
  --color-text-on-primary: var(--color-ink);
  --color-bg-canvas: var(--color-ink);
  --color-bg-surface: var(--color-charcoal);
  --color-bg-surface-subtle: var(--color-graphite);
  --color-border-default: var(--color-paper-8);
  --color-interactive-accent: var(--color-orange-light);
  --color-video-track: var(--color-paper-10);
  --color-rain-icon: var(--color-stone);
  --color-footer-icon: var(--color-pewter);
  color-scheme: dark;
}

/* Scoped surfaces · retain
   inherited page artwork and
   section bands */
/* Surface · keep page artwork */
[data-zone-keep~='surface'] {
  --color-bg-surface: inherit;
}

/* Focus · keep page ring on fixed-Light controls */
[data-zone-keep~='focus-ring'] {
  --color-focus-ring: inherit;
}

/* Section · keep page band */
[data-zone-keep~='section'] {
  --color-bg-section: inherit;
}

/* Styles · phone is the default */
:root {
  /* Heading/XL */
  --font-heading-xl: var(--font-heading);
  --font-weight-heading-xl: 400;
  --text-heading-xl: 2.5rem; /* 40px */
  --line-height-heading-xl: .909091;
  --letter-spacing-heading-xl: -.045em;

  /* Heading/L */
  --font-heading-l: var(--font-heading);
  --font-weight-heading-l: 400;
  --text-heading-l: 1.625rem; /* 26px */
  --line-height-heading-l: 1.142857;
  --letter-spacing-heading-l: -.042em;

  /* Heading/M */
  --font-heading-m: var(--font-heading);
  --font-weight-heading-m: 500;
  --text-heading-m: 1.375rem; /* 22px */
  --line-height-heading-m: 1.333333;
  --letter-spacing-heading-m: -.032em;

  /* Body/L */
  --font-body-l: var(--font-body);
  --font-weight-body-l: 400;
  --text-body-l: 1.125rem; /* 18px */
  --line-height-body-l: 1.5;
  --letter-spacing-body-l: 0em;

  /* Body/M */
  --font-body-m: var(--font-body);
  --font-weight-body-m: 400;
  --text-body-m: 1rem; /* 16px */
  --line-height-body-m: 1.5;
  --letter-spacing-body-m: 0em;

  /* Body/M Strong */
  --font-body-m-strong: var(--font-body);
  --font-weight-body-m-strong: 500;
  --text-body-m-strong: 1rem; /* 16px */
  --line-height-body-m-strong: 1.5;
  --letter-spacing-body-m-strong: 0em;

  /* Body/S */
  --font-body-s: var(--font-body);
  --font-weight-body-s: 400;
  --text-body-s: .875rem; /* 14px */
  --line-height-body-s: 1.428571;
  --letter-spacing-body-s: 0em;

  /* Label/M */
  --font-label-m: var(--font-heading);
  --font-weight-label-m: 500;
  --text-label-m: .875rem; /* 14px */
  --line-height-label-m: 1.428571;
  --letter-spacing-label-m: -.036em;

  /* Label/S */
  --font-label-s: var(--font-body);
  --font-weight-label-s: 500;
  --text-label-s: .75rem; /* 12px */
  --line-height-label-s: 1.333333;
  --letter-spacing-label-s: 0em;
}

/* Tablet · 768px and wider:
   only what changes */
@media (min-width: 768px) {
  :root {
    --text-heading-xl: 3rem; /* 48px */
    --letter-spacing-heading-xl: -.046em;
    --text-heading-l: 2.25rem; /* 36px */
    --letter-spacing-heading-l: -.044em;
  }
}

/* Desktop · 1024px and wider:
   only what changes */
@media (min-width: 1024px) {
  :root {
    --text-heading-xl: 4.75rem; /* 76px */
    --letter-spacing-heading-xl: -.048em;
    --text-heading-l: 3.5rem; /* 56px */
    --letter-spacing-heading-l: -.047em;
    --text-heading-m: 1.5rem; /* 24px */
    --letter-spacing-heading-m: -.034em;
    --text-body-l: 1.25rem; /* 20px */
  }
}

/* Use a style ·
   src/styles/typography.css */
.text-heading-xl {
  font-family: var(--font-heading-xl);
  font-size: var(--text-heading-xl);
  font-weight: var(--font-weight-heading-xl);
  line-height: var(--line-height-heading-xl);
  letter-spacing: var(--letter-spacing-heading-xl);
}

/* Same for .text-heading-l
   … .text-label-s.
   .text-label-m also sets
   text-transform: uppercase. */

<h2 class="text-heading-l">
  Projects
</h2>

/* Spacing ·
   src/styles/tokens.css */
:root {
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;
  --space-16: 64px;
  --space-24: 96px;
}

/* Radius · phone is the default */
:root {
  --radius-xs: 8px;
  --radius-small: 12px;
  --radius-medium: 24px;
  --radius-large: 24px;
  --radius-xlarge: 40px;
  --radius-full: 999px;
}

/* Radius changes · 768px and
   wider */
@media (min-width: 768px) {
  :root {
    --radius-large: 40px;
    --radius-xlarge: clamp(40px, 5.8vw, 100px);
  }
}

/* Shadows · light (default) */
:root,
[data-theme='light'],
[data-color-zone='light'],
[data-fixed-shadow='light'] {
  --shadow-small: 0 8px 24px rgb(22 23 21 / .10);
  --shadow-large:
    0 8px 24px rgb(22 23 21 / .10),
    0 24px 56px rgb(22 23 21 / .12);
}

/* Shadows · dark */
[data-theme='dark'],
[data-color-zone='dark'] {
  --shadow-small:
    0 2px 8px rgb(0 0 0 / .16),
    0 12px 32px rgb(0 0 0 / .28);
  --shadow-large:
    0 8px 24px rgb(0 0 0 / .38),
    0 24px 64px rgb(0 0 0 / .52);
}

/* Scoped shadows · retain page
   elevation when only copy
   changes */
/* Elevation · keep page mode */
[data-zone-keep~='shadows'] {
  --shadow-small: inherit;
  --shadow-large: inherit;
}

/* Large · page; Small is Dark */
[data-zone-keep~='large-shadow'] {
  --shadow-large: inherit;
}

/* Use an icon */
import Icon from '../components/Icon.astro';

<Icon name="arrow" />;
<Icon name="plus" size={20} />;

/* Names · src/data/icons.ts */
// monitor
// tablet
// phone
// layers
// plus
// close
// equals
// arrow
// sun
// moon
// play
// pause
// volume
// volume-muted
// shield-check

/* Add an icon */
// Draw on the 24px grid, with round caps and joins.
// Use Regular weight unless it needs Strong.
// Add it to src/data/icons.ts and to one Icons group.

/* Decorative library */
// src/scripts/waterfall/waterfall-icon-data.ts
// Lucide (ISC). Decoration only, never a control.