/* ==========================================================================
   variables.css — CSS custom properties (design tokens)
   Defines all colors, typography, spacing, and breakpoint tokens for
   the MN Solar institutional website.
   ========================================================================== */

:root {
  /* --- Color palette --- */
  --color-primary: #3DBE5A;
  --color-primary-dark: #2ea048;
  --color-primary-light: #6fd488;
  --color-secondary: #1A1A1A;
  --color-accent: #F07020;
  --color-accent-dark: #d45e10;
  --color-background: #F5F7F2;
  --color-surface: #ffffff;
  --color-text: #1E2A22;
  --color-text-muted: #5a6b60;
  --color-border: #d5ddd7;

  /* --- Typography --- */
  --font-display: 'Barlow', sans-serif;
  --font-body: 'Inter', 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-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --line-height-tight: 1.2;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.8;

  /* --- Spacing --- */
  --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;

  /* --- Layout --- */
  --container-max: 1200px;
  --container-padding: 1.5rem;

  /* --- Border radius --- */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* --- Shadows --- */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.10);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.14);

  /* --- Transitions --- */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* --- Z-index layers --- */
  --z-navbar: 1000;
  --z-overlay: 900;
  --z-modal: 1100;
}