/* ============================================================================
   TechBrot · BSS-1 · 01 — DESIGN TOKENS
   ----------------------------------------------------------------------------
   All variables that the rest of the design system inherits from.
   Change a token here → every component that uses it updates.
   Load order: tokens → base → components → pages
   ============================================================================ */

:root {
  --color-paper: #FAFAF7;
  --color-paper-warm: #F3F1EB;
  --color-paper-deep: #ECEAE2;
  --color-paper-edge: #DDD9CC;
  --color-ink: #0B0B0B;
  --color-ink-soft: #2A2A28;
  --color-ink-mute: #5A5A56;
  --color-ink-faint: #8B8B85;
  --color-accent: #841E1E;
  --color-accent-deep: #6B1818;
  --color-accent-soft: #B85050;
  --color-ink-inverted: #FAFAF7;
  --color-ink-inverted-soft: rgba(250, 250, 247, 0.78);
  --color-ink-inverted-mute: rgba(250, 250, 247, 0.55);
  --color-surface-dark: #111110;
  --color-surface-dark-2: #1A1A18;
  --color-focus: #0F4FCC;
  --color-success: #1F6F3F;
  --color-warning: #B07410;
  --bg-page: var(--color-paper);
  --bg-section-alt: var(--color-paper-warm);
  --bg-card: var(--color-paper);
  --bg-card-on-warm: var(--color-paper);
  --text-primary: var(--color-ink);
  --text-body: var(--color-ink-soft);
  --text-secondary: var(--color-ink-mute);
  --text-eyebrow: var(--color-ink-faint);
  --border-hairline: var(--color-paper-edge);
  --accent: var(--color-accent);
  --font-serif: "Fraunces", Georgia, "Times New Roman", serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Consolas, monospace;
  --fs-12: 0.75rem;
  --fs-13: 0.8125rem;
  --fs-14: 0.875rem;
  --fs-15: 0.9375rem;
  --fs-16: 1rem;
  --fs-17: 1.0625rem;
  --fs-18: 1.125rem;
  --fs-20: 1.25rem;
  --fs-22: 1.375rem;
  --fs-24: 1.5rem;
  --fs-28: 1.75rem;
  --fs-32: 2rem;
  --fs-38: 2.375rem;
  --fs-44: 2.75rem;
  --fs-52: 3.25rem;
  --fs-68: 4.25rem;
  --lh-tight: 1.05;
  --lh-snug: 1.15;
  --lh-base: 1.55;
  --lh-loose: 1.7;
  --ls-tight: -0.02em;
  --ls-snug: -0.012em;
  --ls-base: -0.005em;
  --ls-wide: 0.08em;
  --ls-wider: 0.14em;
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;
  --space-40: 10rem;
  --container-max: 1240px;
  --container-narrow: 820px;
  --container-wide: 1440px;
  --container-padding: 1.25rem;
  --container-padding-lg: 2rem;
  --header-height: 72px;
  --header-height-scrolled: 60px;
  --radius-none: 0;
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-pill: 999px;
  --shadow-xs: 0 1px 2px rgba(11, 11, 11, 0.04);
  --shadow-sm: 0 2px 8px rgba(11, 11, 11, 0.06);
  --shadow-md: 0 8px 24px rgba(11, 11, 11, 0.08);
  --shadow-lg: 0 20px 48px rgba(11, 11, 11, 0.12);
  --shadow-focus: 0 0 0 3px rgba(15, 79, 204, 0.35);
  --motion-fast: 120ms;
  --motion-base: 200ms;
  --motion-slow: 360ms;
  --motion-slower: 600ms;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-spring: cubic-bezier(0.5, 1.2, 0.4, 1);
  --z-base: 1;
  --z-sticky: 50;
  --z-header: 100;
  --z-dropdown: 200;
  --z-drawer: 300;
  --z-modal: 400;
  --z-toast: 500;
}

/* ============================================================================
   DARK MODE — opt-in via [data-theme="dark"], future-ready
   Currently unused; here so we don't have to retrofit later.
   ============================================================================ */

[data-theme="dark"] {
  --bg-page: var(--color-surface-dark);
  --bg-section-alt: var(--color-surface-dark-2);
  --text-primary: var(--color-ink-inverted);
  --text-body: var(--color-ink-inverted-soft);
  --text-secondary: var(--color-ink-inverted-mute);
  --text-eyebrow: var(--color-ink-inverted-mute);
  --border-hairline: rgba(250, 250, 247, 0.12);
}

/* ============================================================================
   REDUCED MOTION — respect user preference
   ============================================================================ */

@media (prefers-reduced-motion: reduce) {
  :root {
    --motion-fast: 0ms;
    --motion-base: 0ms;
    --motion-slow: 0ms;
    --motion-slower: 0ms;
  }
}