/* ==========================================================================
   Hp2Base Design System - Foundation
   Professional Crayon-Style Theme with WCAG AA Compliance
   ========================================================================== */

:root {
  /* ==========================================================================
     Color Palette - Crayon-Inspired Professional Theme
     ========================================================================== */
  
  /* Primary Brand Colors */
  --um-brand-primary: #1d4ed8;
  --um-brand-secondary: #1e40af;
  --um-brand-accent: #3b82f6;
  --um-brand-light: #dbeafe;
  --um-brand-dark: #1e3a8a;
  
  /* Crayon Color Palette - Professional & Accessible */
  --um-red-50: #fff5f5;
  --um-red-100: #fed7d7;
  --um-red-200: #feb2b2;
  --um-red-300: #fc8181;
  --um-red-400: #f56565;
  --um-red-500: #e53e3e;  /* Primary red - WCAG AA compliant */
  --um-red-600: #c53030;
  --um-red-700: #9b2c2c;
  --um-red-800: #822727;
  --um-red-900: #63171b;
  
  --um-blue-50: #eff6ff;
  --um-blue-100: #dbeafe;
  --um-blue-200: #bfdbfe;
  --um-blue-300: #93c5fd;
  --um-blue-400: #60a5fa;
  --um-blue-500: #3b82f6;  /* Primary blue - WCAG AA compliant */
  --um-blue-600: #2563eb;
  --um-blue-700: #1d4ed8;
  --um-blue-800: #1e40af;
  --um-blue-900: #1e3a8a;
  
  --um-green-50: #f0fff4;
  --um-green-100: #c6f6d5;
  --um-green-200: #9ae6b4;
  --um-green-300: #68d391;
  --um-green-400: #48bb78;
  --um-green-500: #38a169;  /* Primary green - WCAG AA compliant */
  --um-green-600: #2f855a;
  --um-green-700: #276749;
  --um-green-800: #22543d;
  --um-green-900: #1c4532;
  
  --um-amber-50: #fffbeb;
  --um-amber-100: #fef3c7;
  --um-amber-200: #fde68a;
  --um-amber-300: #fcd34d;
  --um-amber-400: #fbbf24;
  --um-amber-500: #f59e0b;  /* Primary amber - WCAG AA compliant */
  --um-amber-600: #d97706;
  --um-amber-700: #b45309;
  --um-amber-800: #92400e;
  --um-amber-900: #78350f;
  
  --um-teal-50: #f0fdfa;
  --um-teal-100: #ccfbf1;
  --um-teal-200: #99f6e4;
  --um-teal-300: #5eead4;
  --um-teal-400: #2dd4bf;
  --um-teal-500: #14b8a6;  /* Primary teal - WCAG AA compliant */
  --um-teal-600: #0d9488;
  --um-teal-700: #0f766e;
  --um-teal-800: #115e59;
  --um-teal-900: #134e4a;
  
  /* Neutral Palette */
  --um-gray-50: #fafafa;
  --um-gray-100: #f4f4f5;
  --um-gray-200: #e4e4e7;
  --um-gray-300: #d4d4d8;
  --um-gray-400: #a1a1aa;
  --um-gray-500: #71717a;
  --um-gray-600: #52525b;
  --um-gray-700: #3f3f46;
  --um-gray-800: #27272a;
  --um-gray-900: #18181b;
  
  /* Semantic Colors */
  --um-success: var(--um-green-500);
  --um-warning: #f59e0b;
  --um-error: var(--um-red-500);
  --um-info: var(--um-blue-500);
  
  /* ==========================================================================
     Typography Scale
     ========================================================================== */
  
  /* Font Families */
  --um-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  --um-font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  --um-font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
  
  /* Font Sizes - Modular Scale (1.250 - Major Third) */
  --um-text-xs: 0.75rem;      /* 12px */
  --um-text-sm: 0.875rem;     /* 14px */
  --um-text-base: 1rem;       /* 16px */
  --um-text-lg: 1.125rem;     /* 18px */
  --um-text-xl: 1.25rem;      /* 20px */
  --um-text-2xl: 1.5rem;      /* 24px */
  --um-text-3xl: 1.875rem;    /* 30px */
  --um-text-4xl: 2.25rem;     /* 36px */
  --um-text-5xl: 3rem;        /* 48px */
  --um-text-6xl: 3.75rem;     /* 60px */
  
  /* Line Heights */
  --um-leading-none: 1;
  --um-leading-tight: 1.25;
  --um-leading-snug: 1.375;
  --um-leading-normal: 1.5;
  --um-leading-relaxed: 1.625;
  --um-leading-loose: 2;
  
  /* Font Weights */
  --um-font-thin: 100;
  --um-font-light: 300;
  --um-font-normal: 400;
  --um-font-medium: 500;
  --um-font-semibold: 600;
  --um-font-bold: 700;
  --um-font-extrabold: 800;
  --um-font-black: 900;
  
  /* ==========================================================================
     Spacing Scale - 8px Grid System
     ========================================================================== */
  
  --um-space-px: 1px;
  --um-space-0: 0;
  --um-space-1: 0.25rem;    /* 4px */
  --um-space-2: 0.5rem;     /* 8px */
  --um-space-3: 0.75rem;    /* 12px */
  --um-space-4: 1rem;       /* 16px */
  --um-space-5: 1.25rem;    /* 20px */
  --um-space-6: 1.5rem;     /* 24px */
  --um-space-8: 2rem;       /* 32px */
  --um-space-10: 2.5rem;    /* 40px */
  --um-space-12: 3rem;      /* 48px */
  --um-space-16: 4rem;      /* 64px */
  --um-space-20: 5rem;      /* 80px */
  --um-space-24: 6rem;      /* 96px */
  --um-space-32: 8rem;      /* 128px */
  --um-space-40: 10rem;     /* 160px */
  --um-space-48: 12rem;     /* 192px */
  --um-space-56: 14rem;     /* 224px */
  --um-space-64: 16rem;     /* 256px */
  
  /* ==========================================================================
     Border Radius Scale
     ========================================================================== */
  
  --um-radius-none: 0;
  --um-radius-sm: 0.125rem;   /* 2px */
  --um-radius-base: 0.25rem;  /* 4px */
  --um-radius-md: 0.375rem;   /* 6px */
  --um-radius-lg: 0.5rem;     /* 8px */
  --um-radius-xl: 0.75rem;    /* 12px */
  --um-radius-2xl: 1rem;      /* 16px */
  --um-radius-3xl: 1.5rem;    /* 24px */
  --um-radius-full: 9999px;
  
  /* ==========================================================================
     Shadow Scale
     ========================================================================== */
  
  --um-shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --um-shadow-base: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --um-shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --um-shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --um-shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --um-shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  --um-shadow-inner: inset 0 2px 4px 0 rgb(0 0 0 / 0.05);
  
  /* ==========================================================================
     Z-Index Scale
     ========================================================================== */
  
  --um-z-0: 0;
  --um-z-10: 10;
  --um-z-20: 20;
  --um-z-30: 30;
  --um-z-40: 40;
  --um-z-50: 50;
  --um-z-auto: auto;
  
  /* ==========================================================================
     Animation & Transitions
     ========================================================================== */
  
  --um-transition-fast: 150ms ease-in-out;
  --um-transition-base: 250ms ease-in-out;
  --um-transition-slow: 350ms ease-in-out;
  
  --um-ease-linear: linear;
  --um-ease-in: cubic-bezier(0.4, 0, 1, 1);
  --um-ease-out: cubic-bezier(0, 0, 0.2, 1);
  --um-ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  
  /* ==========================================================================
     Crayon Theme Specific Properties
     ========================================================================== */
  
  /* Crayon Texture Gradients */
  --um-crayon-red: linear-gradient(135deg, var(--um-red-50) 0%, var(--um-red-100) 25%, var(--um-red-200) 50%, var(--um-red-100) 75%, var(--um-red-50) 100%);
  --um-crayon-blue: linear-gradient(135deg, var(--um-blue-50) 0%, var(--um-blue-100) 25%, var(--um-blue-200) 50%, var(--um-blue-100) 75%, var(--um-blue-50) 100%);
  --um-crayon-green: linear-gradient(135deg, var(--um-green-50) 0%, var(--um-green-100) 25%, var(--um-green-200) 50%, var(--um-green-100) 75%, var(--um-green-50) 100%);
  
  /* Crayon Accent Colors */
  --um-crayon-red-accent: var(--um-red-600);
  --um-crayon-blue-accent: var(--um-blue-600);
  --um-crayon-green-accent: var(--um-green-600);
}

/* ==========================================================================
   Body and Page Styling
   ========================================================================== */

body {
  background: var(--um-gray-50);
  color: var(--um-gray-900);
  margin: 0;
  padding: 0;
}

.page {
  background: var(--um-gray-50);
  min-height: 100vh;
}

.um-content {
  background: white;
  border-radius: var(--um-radius-lg);
  box-shadow: var(--um-shadow-sm);
  margin: var(--um-space-4);
  position: relative;
  z-index: 1;
}

/* ==========================================================================
   Base Typography Styles
   ========================================================================== */

html {
  font-family: var(--um-font-sans);
  font-size: var(--um-text-base);
  line-height: var(--um-leading-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--um-font-sans);
  color: var(--um-gray-800);
  background-color: var(--um-gray-50);
  margin: 0;
  padding: 0;
}

/* Heading Scale */
h1, .um-h1 {
  font-size: var(--um-text-4xl);
  font-weight: var(--um-font-bold);
  line-height: var(--um-leading-tight);
  margin-bottom: var(--um-space-6);
  color: var(--um-gray-900);
}

h2, .um-h2 {
  font-size: var(--um-text-3xl);
  font-weight: var(--um-font-semibold);
  line-height: var(--um-leading-tight);
  margin-bottom: var(--um-space-5);
  color: var(--um-gray-800);
}

h3, .um-h3 {
  font-size: var(--um-text-2xl);
  font-weight: var(--um-font-semibold);
  line-height: var(--um-leading-snug);
  margin-bottom: var(--um-space-4);
  color: var(--um-gray-800);
}

h4, .um-h4 {
  font-size: var(--um-text-xl);
  font-weight: var(--um-font-medium);
  line-height: var(--um-leading-snug);
  margin-bottom: var(--um-space-3);
  color: var(--um-gray-700);
}

h5, .um-h5 {
  font-size: var(--um-text-lg);
  font-weight: var(--um-font-medium);
  line-height: var(--um-leading-normal);
  margin-bottom: var(--um-space-3);
  color: var(--um-gray-700);
}

h6, .um-h6 {
  font-size: var(--um-text-base);
  font-weight: var(--um-font-medium);
  line-height: var(--um-leading-normal);
  margin-bottom: var(--um-space-2);
  color: var(--um-gray-600);
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

/* Text Utilities */
.um-text-xs { font-size: var(--um-text-xs); }
.um-text-sm { font-size: var(--um-text-sm); }
.um-text-base { font-size: var(--um-text-base); }
.um-text-lg { font-size: var(--um-text-lg); }
.um-text-xl { font-size: var(--um-text-xl); }
.um-text-2xl { font-size: var(--um-text-2xl); }
.um-text-3xl { font-size: var(--um-text-3xl); }
.um-text-4xl { font-size: var(--um-text-4xl); }

.um-font-light { font-weight: var(--um-font-light); }
.um-font-normal { font-weight: var(--um-font-normal); }
.um-font-medium { font-weight: var(--um-font-medium); }
.um-font-semibold { font-weight: var(--um-font-semibold); }
.um-font-bold { font-weight: var(--um-font-bold); }

/* Color Utilities */
.um-text-brand { color: var(--um-brand-primary); }
.um-text-red { color: var(--um-red-600); }
.um-text-red-500 { color: var(--um-red-500); }
.um-text-red-600 { color: var(--um-red-600); }
.um-text-red-700 { color: var(--um-red-700); }
.um-text-blue { color: var(--um-blue-600); }
.um-text-blue-500 { color: var(--um-blue-500); }
.um-text-blue-600 { color: var(--um-blue-600); }
.um-text-blue-700 { color: var(--um-blue-700); }
.um-text-green { color: var(--um-green-600); }
.um-text-green-500 { color: var(--um-green-500); }
.um-text-green-600 { color: var(--um-green-600); }
.um-text-green-700 { color: var(--um-green-700); }
.um-text-amber { color: var(--um-amber-600); }
.um-text-amber-500 { color: var(--um-amber-500); }
.um-text-amber-600 { color: var(--um-amber-600); }
.um-text-amber-700 { color: var(--um-amber-700); }
.um-text-teal { color: var(--um-teal-600); }
.um-text-teal-500 { color: var(--um-teal-500); }
.um-text-teal-600 { color: var(--um-teal-600); }
.um-text-teal-700 { color: var(--um-teal-700); }
.um-text-gray { color: var(--um-gray-600); }

/* Background Utilities */
.um-bg-brand { background-color: var(--um-brand-primary); }
.um-bg-red { background-color: var(--um-red-500); }
.um-bg-blue { background-color: var(--um-blue-500); }
.um-bg-green { background-color: var(--um-green-500); }
.um-bg-amber { background-color: var(--um-amber-500); }
.um-bg-teal { background-color: var(--um-teal-500); }

/* Spacing Utilities */
.um-m-0 { margin: var(--um-space-0); }
.um-m-1 { margin: var(--um-space-1); }
.um-m-2 { margin: var(--um-space-2); }
.um-m-3 { margin: var(--um-space-3); }
.um-m-4 { margin: var(--um-space-4); }
.um-m-6 { margin: var(--um-space-6); }
.um-m-8 { margin: var(--um-space-8); }

.um-p-0 { padding: var(--um-space-0); }
.um-p-1 { padding: var(--um-space-1); }
.um-p-2 { padding: var(--um-space-2); }
.um-p-3 { padding: var(--um-space-3); }
.um-p-4 { padding: var(--um-space-4); }
.um-p-6 { padding: var(--um-space-6); }
.um-p-8 { padding: var(--um-space-8); }

/* Border Radius Utilities */
.um-rounded { border-radius: var(--um-radius-base); }
.um-rounded-md { border-radius: var(--um-radius-md); }
.um-rounded-lg { border-radius: var(--um-radius-lg); }
.um-rounded-xl { border-radius: var(--um-radius-xl); }
.um-rounded-full { border-radius: var(--um-radius-full); }

/* Shadow Utilities */
.um-shadow { box-shadow: var(--um-shadow-base); }
.um-shadow-md { box-shadow: var(--um-shadow-md); }
.um-shadow-lg { box-shadow: var(--um-shadow-lg); }
.um-shadow-xl { box-shadow: var(--um-shadow-xl); }