/**
 * Academy Theme - Design System Variables & Color Palettes
 * Strict adherence to WCAG AA contrast ratios & RTL specifications
 */

:root {
  /* Typography */
  --font-body: 'Cairo', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Amiri', 'Traditional Arabic', serif;

  /* Font Sizes - Modular Scale */
  --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 */
  --text-5xl: 3rem;       /* 48px */

  /* Spacing 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 */
  --space-20: 5rem;       /* 80px */

  /* Border Radii */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* Elevation Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.05);

  /* 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: 350ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout Containers */
  --container-max: 1240px;
  --container-narrow: 880px;

  /* Default Light Mode Colors */
  --color-bg: #FAF8F3;
  --color-surface: #FFFFFF;
  --color-surface-hover: #F5F2EB;
  --color-text: #1E2430;
  --color-muted: #5B6472;
  --color-primary: #1F3A5F;
  --color-primary-hover: #162B46;
  --color-primary-contrast: #FFFFFF;
  --color-accent: #C9A227;
  --color-accent-hover: #A8861E;
  --color-accent-contrast: #1E2430;
  --color-border: #E4DFD3;
  --color-border-subtle: #ECE8DE;
  
  /* Status Colors */
  --color-success: #1E7E34;
  --color-success-bg: #E8F5E9;
  --color-error: #D32F2F;
  --color-error-bg: #FFEBEE;
  --color-warning: #B78103;
  --color-warning-bg: #FFF8E1;

  /* Overlay */
  --color-overlay: rgba(30, 36, 48, 0.6);
  --color-badge-bg: rgba(31, 58, 95, 0.08);
  --color-badge-text: #1F3A5F;
}

/* Explicit Light Theme (when set in data-theme) */
[data-theme="light"] {
  --color-bg: #FAF8F3;
  --color-surface: #FFFFFF;
  --color-surface-hover: #F5F2EB;
  --color-text: #1E2430;
  --color-muted: #5B6472;
  --color-primary: #1F3A5F;
  --color-primary-hover: #162B46;
  --color-primary-contrast: #FFFFFF;
  --color-accent: #C9A227;
  --color-accent-hover: #A8861E;
  --color-accent-contrast: #1E2430;
  --color-border: #E4DFD3;
  --color-border-subtle: #ECE8DE;
  --color-badge-bg: rgba(31, 58, 95, 0.08);
  --color-badge-text: #1F3A5F;
  --color-overlay: rgba(30, 36, 48, 0.6);
}

/* Dark Theme via attribute or system preference */
[data-theme="dark"] {
  --color-bg: #11161F;
  --color-surface: #1A2230;
  --color-surface-hover: #222C3D;
  --color-text: #E8EBF0;
  --color-muted: #9AA5B5;
  --color-primary: #6FA3E0;
  --color-primary-hover: #8AB8EA;
  --color-primary-contrast: #0E1A2B;
  --color-accent: #E0BC4A;
  --color-accent-hover: #ECC962;
  --color-accent-contrast: #11161F;
  --color-border: #2A3547;
  --color-border-subtle: #1E2736;
  --color-badge-bg: rgba(111, 163, 224, 0.12);
  --color-badge-text: #6FA3E0;
  --color-overlay: rgba(0, 0, 0, 0.8);
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg: #11161F;
    --color-surface: #1A2230;
    --color-surface-hover: #222C3D;
    --color-text: #E8EBF0;
    --color-muted: #9AA5B5;
    --color-primary: #6FA3E0;
    --color-primary-hover: #8AB8EA;
    --color-primary-contrast: #0E1A2B;
    --color-accent: #E0BC4A;
    --color-accent-hover: #ECC962;
    --color-accent-contrast: #11161F;
    --color-border: #2A3547;
    --color-border-subtle: #1E2736;
    --color-badge-bg: rgba(111, 163, 224, 0.12);
    --color-badge-text: #6FA3E0;
    --color-overlay: rgba(0, 0, 0, 0.8);
  }
}