:root {
  /* Palette — Indigo + Amber */
  --color-bg: #ffffff;
  --color-bg-soft: #f8f9fc;
  --color-surface: #ffffff;
  --color-border: #e4e4e7;
  --color-text: #18181b;
  --color-text-muted: #71717a;

  --color-primary: #6366f1;
  --color-primary-hover: #4f46e5;
  --color-primary-soft: #eef2ff;

  --color-accent: #f59e0b;
  --color-accent-hover: #d97706;
  --color-accent-soft: #fef3c7;

  --color-success: #10b981;
  --color-success-bg: #ecfdf5;
  --color-success-text: #047857;
  --color-success-border: #a7f3d0;

  --color-overlay: rgba(24, 24, 27, 0.92);

  /* Gradient — used in hero sections */
  --gradient-hero: linear-gradient(135deg, #eef2ff 0%, #fef3c7 100%);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;
  --font-size-4xl: 3rem;

  /* Layout */
  --container-max: 1200px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 1px 2px rgba(24, 24, 27, 0.06);
  --shadow-md: 0 4px 12px rgba(24, 24, 27, 0.08);
  --shadow-lg: 0 12px 32px rgba(24, 24, 27, 0.10);

  --transition: 200ms ease;
}