/*
 * Sukud Design Tokens
 * CSS Custom Properties for theming (Light/Dark mode)
 * Gamified, child-friendly yet mature aesthetic
 */

:root {
  /* ========================================
   * COLOR PALETTE - Light Mode
   * ======================================== */
  
  /* Background Colors */
  --color-bg-primary: #F8F9FC;
  --color-bg-secondary: #FFFFFF;
  --color-bg-tertiary: #EEF0F5;
  --color-bg-elevated: #FFFFFF;
  --color-bg-overlay: rgba(0, 0, 0, 0.4);
  
  /* Text Colors */
  --color-text-primary: #1A1D29;
  --color-text-secondary: #5A6175;
  --color-text-tertiary: #8B92A8;
  --color-text-inverse: #FFFFFF;
  --color-text-muted: #9CA3AF;
  
  /* Brand Accent Colors */
  --color-accent-primary: #6366F1;      /* Indigo - Main brand */
  --color-accent-primary-hover: #4F46E5;
  --color-accent-primary-light: #E0E7FF;
  
  --color-accent-secondary: #14B8A6;    /* Teal - Success/Progress */
  --color-accent-secondary-hover: #0D9488;
  --color-accent-secondary-light: #CCFBF1;
  
  /* Gamification Colors */
  --color-gamify-gold: #F59E0B;         /* Points, Achievements */
  --color-gamify-gold-light: #FEF3C7;
  --color-gamify-xp: #8B5CF6;           /* XP, Streaks */
  --color-gamify-xp-light: #EDE9FE;
  --color-gamify-streak: #F97316;       /* Streaks */
  --color-gamify-streak-light: #FFEDD5;
  
  /* Status Colors */
  --color-success: #10B981;
  --color-success-light: #D1FAE5;
  --color-warning: #F59E0B;
  --color-warning-light: #FEF3C7;
  --color-error: #EF4444;
  --color-error-light: #FEE2E2;
  --color-info: #3B82F6;
  --color-info-light: #DBEAFE;
  
  /* Border Colors */
  --color-border: #E5E7EB;
  --color-border-light: #F3F4F6;
  --color-border-focus: #6366F1;
  
  /* Rarity Colors (Achievements) */
  --color-rarity-common: #9CA3AF;
  --color-rarity-rare: #3B82F6;
  --color-rarity-epic: #8B5CF6;
  --color-rarity-legendary: #F59E0B;
  
  /* ========================================
   * SPACING
   * ======================================== */
  --space-0: 0;
  --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 */
  
  /* Spacing Aliases (for templates using --spacing-* naming) */
  --spacing-0: var(--space-0);
  --spacing-1: var(--space-1);
  --spacing-2: var(--space-2);
  --spacing-3: var(--space-3);
  --spacing-4: var(--space-4);
  --spacing-5: var(--space-5);
  --spacing-6: var(--space-6);
  --spacing-8: var(--space-8);
  --spacing-10: var(--space-10);
  --spacing-12: var(--space-12);
  --spacing-16: var(--space-16);
  
  /* ========================================
   * TYPOGRAPHY
   * ======================================== */
  --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-family-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-family-mono: 'Fira Code', 'JetBrains Mono', monospace;
  
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 1.875rem;  /* 30px */
  --font-size-4xl: 2.25rem;   /* 36px */
  
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* ========================================
   * BORDER RADIUS (Squircle-ish)
   * ======================================== */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;
  --radius-2xl: 24px;
  --radius-full: 9999px;
  
  /* ========================================
   * SHADOWS
   * ======================================== */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 8px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 20px -4px rgba(0, 0, 0, 0.1), 0 4px 8px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 40px -8px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.25);
  --shadow-glow-success: 0 0 20px rgba(16, 185, 129, 0.25);
  
  /* ========================================
   * TRANSITIONS
   * ======================================== */
  --transition-fast: 100ms ease-out;
  --transition-normal: 200ms ease-out;
  --transition-slow: 300ms ease-out;
  --transition-bounce: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
  
  /* ========================================
   * Z-INDEX SCALE
   * ======================================== */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal-backdrop: 300;
  --z-modal: 400;
  --z-toast: 500;
  --z-tooltip: 600;
}

/* ========================================
 * DARK MODE
 * ======================================== */
[data-theme="dark"] {
  /* Background Colors */
  --color-bg-primary: #0F1117;
  --color-bg-secondary: #1A1D29;
  --color-bg-tertiary: #232736;
  --color-bg-elevated: #252A3A;
  --color-bg-overlay: rgba(0, 0, 0, 0.6);
  
  /* Text Colors */
  --color-text-primary: #F3F4F6;
  --color-text-secondary: #9CA3AF;
  --color-text-tertiary: #6B7280;
  --color-text-inverse: #1A1D29;
  
  /* Adjusted accents for dark */
  --color-accent-primary-light: rgba(99, 102, 241, 0.2);
  --color-accent-secondary-light: rgba(20, 184, 166, 0.2);
  --color-gamify-gold-light: rgba(245, 158, 11, 0.2);
  --color-gamify-xp-light: rgba(139, 92, 246, 0.2);
  --color-gamify-streak-light: rgba(249, 115, 22, 0.2);
  
  /* Status light variants */
  --color-success-light: rgba(16, 185, 129, 0.2);
  --color-warning-light: rgba(245, 158, 11, 0.2);
  --color-error-light: rgba(239, 68, 68, 0.2);
  --color-info-light: rgba(59, 130, 246, 0.2);
  
  /* Border Colors */
  --color-border: #2D3348;
  --color-border-light: #232736;
  
  /* Adjusted shadows for dark */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 4px 8px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 20px -4px rgba(0, 0, 0, 0.35);
  --shadow-xl: 0 20px 40px -8px rgba(0, 0, 0, 0.4);
}

/* System preference detection */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    /* Same as [data-theme="dark"] */
    --color-bg-primary: #0F1117;
    --color-bg-secondary: #1A1D29;
    --color-bg-tertiary: #232736;
    --color-bg-elevated: #252A3A;
    --color-text-primary: #F3F4F6;
    --color-text-secondary: #9CA3AF;
    --color-text-tertiary: #6B7280;
    --color-border: #2D3348;
    --color-border-light: #232736;
  }
}