/* ============================================
   DESIGN TOKENS - LBH Educate
   ============================================ */

:root {
  /* -------------------- Colors -------------------- */

  /* Primary Palette */
  --color-primary: #4A90E2;
  --color-primary-light: #6BA3E8;
  --color-primary-dark: #357ABD;

  /* Secondary Palette */
  --color-secondary: #7B68EE;
  --color-secondary-light: #9A88F3;
  --color-secondary-dark: #5A4BC7;

  /* Accent */
  --color-accent: #F39C12;
  --color-accent-light: #F5B041;
  --color-accent-dark: #CA7D0A;

  /* Neutrals */
  --color-white: #FFFFFF;
  --color-gray-50: #F9FAFB;
  --color-gray-100: #F3F4F6;
  --color-gray-200: #E5E7EB;
  --color-gray-300: #D1D5DB;
  --color-gray-400: #9CA3AF;
  --color-gray-500: #6B7280;
  --color-gray-600: #4B5563;
  --color-gray-700: #374151;
  --color-gray-800: #1F2937;
  --color-gray-900: #111827;
  --color-black: #000000;

  /* Semantic Colors */
  --color-success: #10B981;
  --color-success-light: #34D399;
  --color-success-dark: #059669;

  --color-warning: #F59E0B;
  --color-warning-light: #FBBF24;
  --color-warning-dark: #D97706;

  --color-error: #EF4444;
  --color-error-light: #F87171;
  --color-error-dark: #DC2626;

  --color-info: #3B82F6;
  --color-info-light: #60A5FA;
  --color-info-dark: #2563EB;

  /* Background & Surface */
  --color-bg-primary: var(--color-white);
  --color-bg-secondary: var(--color-gray-50);
  --color-bg-tertiary: var(--color-gray-100);

  --color-surface: var(--color-white);
  --color-surface-raised: var(--color-white);

  /* Text */
  --color-text-primary: var(--color-gray-900);
  --color-text-secondary: var(--color-gray-600);
  --color-text-tertiary: var(--color-gray-400);
  --color-text-inverse: var(--color-white);

  /* Borders */
  --color-border-light: var(--color-gray-200);
  --color-border-medium: var(--color-gray-300);
  --color-border-dark: var(--color-gray-400);

  /* -------------------- Typography -------------------- */

  /* Font Families */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-serif: Georgia, Cambria, "Times New Roman", Times, serif;
  --font-mono: "SF Mono", Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Font Sizes - Fluid with clamp() */
  --font-size-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);     /* 12-14px */
  --font-size-sm: clamp(0.875rem, 0.825rem + 0.25vw, 1rem);      /* 14-16px */
  --font-size-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);     /* 16-18px */
  --font-size-md: clamp(1.125rem, 1.05rem + 0.375vw, 1.25rem);   /* 18-20px */
  --font-size-lg: clamp(1.25rem, 1.15rem + 0.5vw, 1.5rem);       /* 20-24px */
  --font-size-xl: clamp(1.5rem, 1.35rem + 0.75vw, 2rem);         /* 24-32px */
  --font-size-2xl: clamp(2rem, 1.75rem + 1.25vw, 3rem);          /* 32-48px */
  --font-size-3xl: clamp(2.5rem, 2rem + 2.5vw, 4rem);            /* 40-64px */

  /* Font Weights */
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  /* Line Heights */
  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;

  /* Letter Spacing */
  --letter-spacing-tight: -0.025em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.025em;
  --letter-spacing-wider: 0.05em;
  --letter-spacing-widest: 0.1em;

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

  /* Fluid spacing using clamp() */
  --space-3xs: clamp(0.25rem, 0.23rem + 0.1vw, 0.313rem);   /* 4-5px */
  --space-2xs: clamp(0.5rem, 0.48rem + 0.1vw, 0.563rem);    /* 8-9px */
  --space-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);    /* 12-14px */
  --space-sm: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);      /* 16-18px */
  --space-md: clamp(1.5rem, 1.43rem + 0.38vw, 1.688rem);    /* 24-27px */
  --space-lg: clamp(2rem, 1.9rem + 0.5vw, 2.25rem);         /* 32-36px */
  --space-xl: clamp(3rem, 2.85rem + 0.75vw, 3.375rem);      /* 48-54px */
  --space-2xl: clamp(4rem, 3.8rem + 1vw, 4.5rem);           /* 64-72px */
  --space-3xl: clamp(6rem, 5.7rem + 1.5vw, 6.75rem);        /* 96-108px */

  /* -------------------- Sizing -------------------- */

  /* Container Widths */
  --container-xs: 20rem;      /* 320px */
  --container-sm: 30rem;      /* 480px */
  --container-md: 48rem;      /* 768px */
  --container-lg: 64rem;      /* 1024px */
  --container-xl: 80rem;      /* 1280px */
  --container-2xl: 96rem;     /* 1536px */

  /* -------------------- Borders -------------------- */

  --border-width-thin: 1px;
  --border-width-medium: 2px;
  --border-width-thick: 4px;

  --border-radius-sm: 0.25rem;    /* 4px */
  --border-radius-md: 0.5rem;     /* 8px */
  --border-radius-lg: 0.75rem;    /* 12px */
  --border-radius-xl: 1rem;       /* 16px */
  --border-radius-2xl: 1.5rem;    /* 24px */
  --border-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);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);

  /* -------------------- Transitions -------------------- */

  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;

  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);

  /* -------------------- Z-Index -------------------- */

  --z-base: 0;
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}