:root {
  /* ───────── Brand & Accent ─────────
     One accent color — burnt rust. Used sparingly on CTAs and emphasis.
     Dark navy still used for nav, footer, and confident dark sections. */
  --color-primary: #0a0a0a;          /* Solid black — anchor color */
  --color-primary-light: #1f1f1f;
  --color-secondary: #404040;
  --color-accent: #0a0a0a;           /* Pure black — the ONE accent */
  --color-accent-hover: #2a2a2a;     /* Slightly lifted on hover */
  --color-accent-light: #f4f4f5;     /* Subtle neutral tint background */
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;

  /* ───────── Surfaces (clean white + neutral grays — no warm/brown undertone) ─────────
     Pure white + neutral gray scale. Rust accent pops against this clean palette. */
  --color-bg: #ffffff;              /* Page background — pure white */
  --color-bg-card: #ffffff;         /* Cards on page */
  --color-bg-card-hover: #fafafa;   /* Card hover lift */
  --color-bg-surface: #fafafa;      /* Subtle section background */
  --color-bg-alt: #f4f4f5;          /* Slightly stronger surface */

  /* ───────── Text (true neutral grays — no warm tint) ───────── */
  --color-text: #18181b;            /* Body — near black */
  --color-text-muted: #525252;      /* Secondary text — mid gray */
  --color-text-dim: #a3a3a3;        /* Captions, meta — light gray */
  --color-heading: #0a0a0a;         /* Headings — near black */

  /* ───────── Borders (neutral) ───────── */
  --color-border: #e5e5e5;          /* Card edges, dividers */
  --color-border-light: #d4d4d4;    /* Slightly stronger */

  --color-white: #ffffff;
  --color-black: #000000;

  /* Nav + Footer: both white with dark text. Dark hero is the only anchor. */
  --color-nav-bg: #ffffff;
  --color-nav-border: #e5e5e5;
  --color-footer-bg: #ffffff;
  --color-footer-border: #e5e5e5;
  --color-footer-text: #525252;
  --color-footer-heading: #0a0a0a;

  /* ───────── Typography ─────────
     Plus Jakarta Sans — modern, friendly geometric sans with character.
     One family for the whole site. Loaded in base.njk. */
  --font-family-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-family-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Layout */
  --container-max: 1280px;
  --container-narrow: 800px;
  --border-radius-sm: 0.375rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 0.75rem;
  --border-radius-xl: 1rem;
  --border-radius-full: 9999px;

  /* Shadows — lighter for light theme */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;
}