/* ==========================================================================
   Design Tokens — ZEduction v3
   ========================================================================== */

:root {
  /* Colors — Warm + Trustworthy + Playful */
  --color-primary:       #4F46E5;
  --color-primary-dark:  #3730A3;
  --color-primary-light: #EEF2FF;
  --color-accent:        #F59E0B;
  --color-accent-dark:   #D97706;
  --color-success:       #10B981;
  --color-neutral-900:   #111827;
  --color-neutral-700:   #374151;
  --color-neutral-500:   #6B7280;
  --color-neutral-200:   #E5E7EB;
  --color-neutral-100:   #F3F4F6;
  --color-neutral-50:    #F9FAFB;
  --color-white:         #FFFFFF;

  /* Typography */
  --font-heading: "Plus Jakarta Sans", sans-serif;
  --font-body:    "Inter", sans-serif;

  /* Type Scale — fluid clamp */
  --text-xs:   clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.9rem + 0.45vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem + 0.55vw, 1.25rem);
  --text-xl:   clamp(1.25rem, 1.1rem + 0.7vw, 1.5rem);
  --text-2xl:  clamp(1.5rem, 1.2rem + 1.3vw, 2rem);
  --text-3xl:  clamp(1.875rem, 1.4rem + 2vw, 2.5rem);
  --text-4xl:  clamp(2.25rem, 1.6rem + 2.8vw, 3.25rem);

  /* 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;

  /* Radii */
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md:  0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg:  0 8px 24px rgba(0, 0, 0, 0.12);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.2s ease;
  --transition-slow: 0.3s ease;
}