/*
 * DESIGN SYSTEM TOKENS - deckingoilsprayer.uk
 * Primary color source of truth.
 * Custom properties for colors, shadows, borders, and focus rings.
 * All color pairings checked for WCAG AA compliance.
 */

:root {
  /* ==========================================================================
     COLOR ANCHORS
     ========================================================================== */

  /* Forest Green (Primary Anchor) - Forest/Woodland tone
     Contrast with white (#ffffff) is 11.08:1 - WCAG AAA Pass (4.5:1 required)
     Contrast with sandstone cream (#fdfbf7) is 10.72:1 - WCAG AAA Pass */
  --color-green-50: #eef7f2;
  --color-green-100: #d6ede0;
  --color-green-200: #adcfae;
  --color-green-300: #7fb08c;
  --color-green-400: #518f6a;
  --color-green-500: #1b4332; /* Anchor */
  --color-green-600: #16382a;
  --color-green-700: #112d22;
  --color-green-800: #0d221a;
  --color-green-900: #091712;

  /* Amber (CTA/Accent Anchor) - Used for primary buttons, ratings, highlights
     Contrast with slate text (#1e293b) is 4.59:1 - WCAG AA Pass (4.5:1 required)
     Contrast with white (#ffffff) is 3.19:1 - FAILS WCAG AA (requires 4.5:1)
     Contrast with forest green (#1b4332) is 3.48:1 - FAILS WCAG AA */
  --color-amber-50: #fffbeb;
  --color-amber-100: #fef3c7;
  --color-amber-200: #fde68a;
  --color-amber-300: #fcd34d;
  --color-amber-400: #fbbf24;
  --color-amber-500: #d97706; /* Anchor */
  --color-amber-600: #b45309; /* Hover Anchor */
  --color-amber-700: #92400e;
  --color-amber-800: #78350f;
  --color-amber-900: #451a03;

  /* Sienna (Secondary Anchor) - Earthy timber tone for secondary elements
     Contrast with white (#ffffff) is 5.62:1 - WCAG AA Pass (4.5:1 required)
     Contrast with sandstone cream (#fdfbf7) is 5.43:1 - WCAG AA Pass */
  --color-sienna-500: #a0522d;

  /* Sandstone Cream - Main website background
     Contrast with slate text (#1e293b) is 14.15:1 - WCAG AAA Pass
     Contrast with forest green (#1b4332) is 10.72:1 - WCAG AAA Pass */
  --color-cream-500: #fdfbf7;

  /* Slate - Dark charcoal for body text and headers
     Contrast with sandstone cream (#fdfbf7) is 14.15:1 - WCAG AAA Pass */
  --color-slate-500: #1e293b;

  /* Section Tint - Alternating light background section bands
     Contrast with slate text (#1e293b) is 13.66:1 - WCAG AAA Pass */
  --color-tint-500: #f4f8f6;


  /* ==========================================================================
     TEXT ON COLOUR PAIRINGS
     ========================================================================== */

  /* Text on Forest Green background - Pure white, AAA pass (11.08:1) */
  --text-on-green: #ffffff;

  /* Text on Amber background - Dark slate (#1e293b), AA pass (4.59:1).
     Note: White text on amber is strictly forbidden as it fails WCAG AA (3.19:1). */
  --text-on-amber: #1e293b;

  /* Text on Sienna background - Pure white, AA pass (5.62:1) for bold/large text. */
  --text-on-sienna: #ffffff;


  /* ==========================================================================
     TYPOGRAPHY
     ========================================================================== */

  /* Font Family Stacks */
  --font-heading: "Outfit", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;


  /* ==========================================================================
     SHAPE & ELEVATION
     ========================================================================== */

  /* Border Radii */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-full: 9999px;

  /* Border Widths and Colors */
  --border-width-thin: 1px;
  --border-width-thick: 2px;
  --border-color-light: #e2e8f0;
  --border-color-dark: #1e293b;
  --border-color-green: #1b4332;
  --border-color-sienna: #a0522d;

  /* Shadows (tilted green offset for brand alignment) */
  --shadow-sm: 0 1px 2px 0 rgba(27, 67, 50, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(27, 67, 50, 0.07), 0 2px 4px -2px rgba(27, 67, 50, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(27, 67, 50, 0.08), 0 4px 6px -4px rgba(27, 67, 50, 0.04);


  /* ==========================================================================
     ACCESSIBILITY
     ========================================================================== */

  /* Focus Ring outline helper (Amber halo, WCAG compliant contrast outline) */
  --focus-ring: 0 0 0 3px rgba(217, 119, 6, 0.4);
}