globals.css

@import "tailwindcss";
@import "tw-animate-css";

@custom-variant dark (&:is(.dark *));

/*
 * Design tokens — single source of truth (Phase 0.2).
 *
 * Colors are oklch semantic tokens: components reference `bg-background`,
 * `text-primary`, etc. — never raw color values. Light theme on :root,
 * dark theme on .dark (class strategy, toggled via next-themes).
 *
 * Every pairing of `x-foreground` on `x` (plus foreground/muted-foreground
 * on background) is WCAG-AA-verified by lib/design/contrast.test.ts, which
 * parses this file. Editing a value here reruns those checks in CI.
 */
:root {
  --background: oklch(0.985 0.003 250);
  --foreground: oklch(0.19 0.02 255);
  --card: oklch(1 0 0);
  --card-foreground: oklch(0.19 0.02 255);
  --popover: oklch(1 0 0);
  --popover-foreground: oklch(0.19 0.02 255);
  /* Deep blue brand accent (UI/UX doc: "Deep Blue Accent") */
  --primary: oklch(0.45 0.16 258);
  --primary-foreground: oklch(0.985 0.005 250);
  --secondary: oklch(0.955 0.01 252);
  --secondary-foreground: oklch(0.28 0.04 256);
  --muted: oklch(0.96 0.008 252);
  --muted-foreground: oklch(0.45 0.025 256);
  --accent: oklch(0.94 0.025 255);
  --accent-foreground: oklch(0.32 0.1 258);
  --destructive: oklch(0.5 0.19 27);
  --destructive-foreground: oklch(0.985 0.005 250);
  --border: oklch(0.905 0.01 252);
  --input: oklch(0.905 0.01 252);
  --ring: oklch(0.45 0.16 258);
  --radius: 0.625rem;
}

.dark {
  --background: oklch(0.16 0.015 256);
  --foreground: oklch(0.95 0.008 250);
  --card: oklch(0.205 0.018 256);
  --card-foreground: oklch(0.95 0.008 250);
  --popover: oklch(0.205 0.018 256);
  --popover-foreground: oklch(0.95 0.008 250);
  --primary: oklch(0.65 0.15 258);
  --primary-foreground: oklch(0.15 0.02 256);
  --secondary: oklch(0.26 0.02 256);
  --secondary-foreground: oklch(0.93 0.01 250);
  --muted: oklch(0.24 0.02 256);
  --muted-foreground: oklch(0.72 0.02 254);
  --accent: oklch(0.29 0.05 258);
  --accent-foreground: oklch(0.92 0.02 254);
  --destructive: oklch(0.58 0.2 26);
  --destructive-foreground: oklch(0.985 0.005 250);
  --border: oklch(0.28 0.02 256);
  --input: oklch(0.28 0.02 256);
  --ring: oklch(0.65 0.15 258);
}

@theme inline {
  --color-background: var(--background);
  --color-foreground: var(--foreground);
  --color-card: var(--card);
  --color-card-foreground: var(--card-foreground);
  --color-popover: var(--popover);
  --color-popover-foreground: var(--popover-foreground);
  --color-primary: var(--primary);
  --color-primary-foreground: var(--primary-foreground);
  --color-secondary: var(--secondary);
  --color-secondary-foreground: var(--secondary-foreground);
  --color-muted: var(--muted);
  --color-muted-foreground: var(--muted-foreground);
  --color-accent: var(--accent);
  --color-accent-foreground: var(--accent-foreground);
  --color-destructive: var(--destructive);
  --color-destructive-foreground: var(--destructive-foreground);
  --color-border: var(--border);
  --color-input: var(--input);
  --color-ring: var(--ring);

  --font-sans: var(--font-geist-sans);
  --font-mono: var(--font-geist-mono);

  --radius-sm: calc(var(--radius) - 4px);
  --radius-md: calc(var(--radius) - 2px);
  --radius-lg: var(--radius);
  --radius-xl: calc(var(--radius) + 4px);

  /*
   * Deliberate, limited type scale (enterprise / Apple + Vercel direction).
   * Tailwind's defaults beyond this set are removed so hierarchy stays
   * intentional: body text, two supporting sizes, three heading steps,
   * one display step.
   */
  --text-*: initial;
  --text-xs: 0.75rem;
  --text-xs--line-height: 1rem;
  --text-sm: 0.875rem;
  --text-sm--line-height: 1.25rem;
  --text-base: 1rem;
  --text-base--line-height: 1.5rem;
  --text-lg: 1.125rem;
  --text-lg--line-height: 1.75rem;
  --text-xl: 1.25rem;
  --text-xl--line-height: 1.75rem;
  --text-2xl: 1.5rem;
  --text-2xl--line-height: 2rem;
  --text-3xl: 1.875rem;
  --text-3xl--line-height: 2.25rem;
  --text-4xl: 2.25rem;
  --text-4xl--line-height: 2.5rem;
  --text-6xl: 3.75rem;
  --text-6xl--line-height: 1;
}

@layer base {
  * {
    @apply border-border outline-ring/50;
  }

  /*
   * Smooth in-page scrolling (App Flow: "Smooth scrolling") with a global
   * anchor offset: the sticky navbar is h-16 (4rem), so anchored sections
   * stop 5rem down (1rem breathing room). Sections must NOT add their own
   * scroll-mt-* — see the anchor contract in data/navigation.ts. The
   * reduced-motion rule below flattens scroll-behavior back to auto.
   */
  html {
    @apply scroll-pt-20 scroll-smooth;
  }

  body {
    @apply bg-background font-sans text-foreground antialiased;
  }

  /*
   * Global focus ring (accessibility requirement): every focusable element
   * gets a visible ring in the accent color, both themes. shadcn primitives
   * opt out via `outline-none` and render their own ring from the same
   * --ring token, so the treatment stays consistent everywhere.
   */
  :focus-visible {
    outline: 2px solid var(--ring);
    outline-offset: 2px;
  }

  /*
   * CSS-level reduced-motion support. Framer Motion presets additionally
   * respect this via MotionConfig reducedMotion="user"; this rule covers
   * CSS transitions/animations (tw-animate-css, hover transitions, smooth
   * scrolling) for users who opt out of 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;
    }
  }
}

/*
 * Glassmorphism surface — the only sanctioned glass treatment (UI/UX doc).
 * Deliberately subtle: translucent card surface, backdrop blur, soft border.
 * Apply to floating/overlay surfaces only, never to every card.
 */
@utility glass {
  border-width: 1px;
  border-color: color-mix(in oklab, var(--border) 60%, transparent);
  background-color: color-mix(in oklab, var(--card) 65%, transparent);
  backdrop-filter: blur(12px);
}