/* DESIGN.md design tokens */
:root {
  /* Brand & accent */
  --color-primary: #f54e00;
  --color-primary-active: #d04200;
  --color-on-primary: #ffffff;

  /* Surface */
  --color-canvas: #f7f7f4;
  --color-canvas-soft: #fafaf7;
  --color-surface-card: #ffffff;
  --color-surface-strong: #e6e5e0;

  /* Hairlines */
  --color-hairline: #e6e5e0;
  --color-hairline-soft: #efeee8;
  --color-hairline-strong: #cfcdc4;

  /* Text */
  --color-ink: #26251e;
  --color-body: #5a5852;
  --color-body-strong: #26251e;
  --color-muted: #807d72;
  --color-muted-soft: #a09c92;

  /* Semantic */
  --color-error: #cf2d56;
  --color-success: #1f8a65;

  /* Typography */
  --font-sans: "Inter", system-ui, -apple-system, "PingFang SC", "Microsoft YaHei",
    "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", monospace;

  --text-display-lg: 36px;
  --text-display-md: 26px;
  --text-display-sm: 22px;
  --text-body-md: 16px;
  --text-body-sm: 14px;
  --text-caption: 13px;
  --text-caption-uppercase: 11px;
  --text-nav: 14px;
  --text-btn: 14px;

  /* Radius */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-pill: 9999px;

  /* Spacing */
  --spacing-xxs: 4px;
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-base: 16px;
  --spacing-md: 20px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;
  --spacing-section: 80px;

  /* Layout */
  --content-max-width: 1200px;
  --header-height: 64px;

  /* Breakpoints (for reference in media queries) */
  --bp-mobile: 639px;
  --bp-tablet: 1024px;
  --bp-desktop: 1280px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-family: var(--font-sans);
  font-size: var(--text-body-md);
  color: var(--color-body);
  background: var(--color-canvas);
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  font-family: inherit;
  color: inherit;
  background: inherit;
}

/* Accessibility: visible keyboard focus */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

:focus:not(:focus-visible) {
  outline: none;
}