/*
  SICAKEP KIDS - DESIGN SYSTEM
  Foundational tokens and base styles for Elementary School version.
*/
@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800&display=swap');

:root {
  /* =========================================
     COLOR TOKENS (Light Mode Default)
     ========================================= */
  
  /* Primary: Fresh Green 🌿 */
  --color-primary-50: #f0fdf4;
  --color-primary-100: #dcfce7;
  --color-primary-200: #bbf7d0;
  --color-primary-300: #86efac;
  --color-primary-400: #4ade80;
  --color-primary-500: #22c55e;
  --color-primary-600: #16a34a;
  --color-primary-700: #15803d;
  --color-primary-800: #166534;
  --color-primary-900: #14532d;

  /* Secondary: Bright Blue 💙 */
  --color-secondary-50: #eff6ff;
  --color-secondary-100: #dbeafe;
  --color-secondary-200: #bfdbfe;
  --color-secondary-300: #93c5fd;
  --color-secondary-400: #60a5fa;
  --color-secondary-500: #3b82f6;
  --color-secondary-600: #2563eb;
  --color-secondary-700: #1d4ed8;
  --color-secondary-800: #1e40af;
  --color-secondary-900: #1e3a8a;

  /* Accent: Warm Coral/Orange 🧡 */
  --color-accent-50: #fff7ed;
  --color-accent-100: #ffedd5;
  --color-accent-200: #fed7aa;
  --color-accent-300: #fdba74;
  --color-accent-400: #fb923c;
  --color-accent-500: #f97316;
  --color-accent-600: #ea580c;
  --color-accent-700: #c2410c;
  --color-accent-800: #9a3412;
  --color-accent-900: #7c2d12;

  /* Sunshine: Yellow ☀️ */
  --color-sunshine-50: #fefce8;
  --color-sunshine-100: #fef9c3;
  --color-sunshine-200: #fef08a;
  --color-sunshine-300: #fde047;
  --color-sunshine-400: #facc15;
  --color-sunshine-500: #eab308;
  --color-sunshine-600: #ca8a04;
  --color-sunshine-700: #a16207;
  --color-sunshine-800: #854d0e;
  --color-sunshine-900: #713f12;

  /* Neutrals: Grays */
  --color-neutral-50: #f8fafc;
  --color-neutral-100: #f1f5f9;
  --color-neutral-200: #e2e8f0;
  --color-neutral-300: #cbd5e1;
  --color-neutral-400: #94a3b8;
  --color-neutral-500: #64748b;
  --color-neutral-600: #475569;
  --color-neutral-700: #334155;
  --color-neutral-800: #1e293b;
  --color-neutral-900: #0f172a;

  /* Semantics */
  --color-success: var(--color-primary-500);
  --color-warning: var(--color-sunshine-500);
  --color-error: #ef4444;
  --color-info: var(--color-secondary-500);

  /* Surfaces */
  --surface-primary: #ffffff;
  --surface-secondary: #f4f8fb;
  --surface-card: #ffffff;
  --surface-elevated: #ffffff;
  
  /* Text */
  --text-primary: var(--color-neutral-900);
  --text-secondary: var(--color-neutral-600);
  --text-inverse: #ffffff;

  /* =========================================
     TYPOGRAPHY
     ========================================= */
  --font-family-primary: 'Nunito', system-ui, -apple-system, sans-serif;
  
  --text-xs: 0.75rem;     /* 12px */
  --text-sm: 0.875rem;    /* 14px */
  --text-base: 1rem;      /* 16px */
  --text-lg: 1.125rem;    /* 18px */
  --text-xl: 1.25rem;     /* 20px */
  --text-2xl: 1.5rem;     /* 24px */
  --text-3xl: 1.875rem;   /* 30px */
  --text-4xl: 2.25rem;    /* 36px */

  --font-weight-regular: 400;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-loose: 1.8;

  /* =========================================
     SPACING (4px scale)
     ========================================= */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */

  /* =========================================
     BORDER RADIUS
     ========================================= */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;

  /* =========================================
     SHADOWS
     ========================================= */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Playful shadow for kids */
  --shadow-playful: 0 8px 0 0 rgba(0,0,0,0.1);

  /* =========================================
     TRANSITIONS
     ========================================= */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Mobile Viewport Fix */
  --vh: 1vh;
}

/* =========================================
   BASE STYLES & RESET
   ========================================= */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-primary);
  background-color: var(--surface-secondary);
  color: var(--text-primary);
  line-height: var(--line-height-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  min-height: calc(var(--vh, 1vh) * 100);
}

/* Accessibility: Focus visible */
*:focus-visible {
  outline: 3px solid var(--color-secondary-400);
  outline-offset: 2px;
}

/* Reduces motion if user prefers */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}