// ============================================
// Theme Variables (CSS Custom Properties)
// ============================================

:root {
  // Colors - Dark theme (default)
  --color-primary: #10a37f;
  --color-primary-dark: #0d8a6a;
  --color-primary-light: #1abf94;
  --color-secondary: #8e8ea0;
  
  --color-bg: #0d0d0d;
  --color-bg-paper: #1a1a1a;
  --color-bg-elevated: #242424;
  --color-bg-hover: rgba(255, 255, 255, 0.08);
  
  --color-text: #ffffff;
  --color-text-secondary: #a0a0a0;
  --color-text-disabled: #666666;
  
  --color-border: #333333;
  --color-divider: rgba(255, 255, 255, 0.12);
  
  --color-success: #22c55e;
  --color-success-bg: rgba(34, 197, 94, 0.1);
  --color-warning: #f59e0b;
  --color-warning-bg: rgba(245, 158, 11, 0.1);
  --color-error: #ef4444;
  --color-error-bg: rgba(239, 68, 68, 0.1);
  --color-info: #3b82f6;
  --color-info-bg: rgba(59, 130, 246, 0.1);
  
  // Spacing
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  
  // Border radius
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;
  
  // Shadows
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
  
  // Typography
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;

  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;

  // Code block colors
  --color-code-bg: #1e1e1e;
  --color-code-text: #f8f8f2;
  --color-code-keyword: #569cd6;
  --color-code-string: #ce9178;
  --color-code-comment: #6a9955;
  --color-code-function: #dcdcaa;

  // Transitions
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;

  // Z-index layers
  --z-dropdown: 100;
  --z-modal: 200;
  --z-toast: 300;
}

// Light theme overrides
[data-theme="light"] {
  --color-bg: #ffffff;
  --color-bg-paper: #f7f7f8;
  --color-bg-elevated: #ffffff;
  --color-bg-hover: rgba(0, 0, 0, 0.04);
  
  --color-text: #1a1a1a;
  --color-text-secondary: #6e6e80;
  --color-text-disabled: #999999;
  
  --color-border: #e0e0e0;
  --color-divider: rgba(0, 0, 0, 0.12);
  
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.15);
}

// Midnight theme
[data-theme="midnight"] {
  --color-primary: #6366f1;
  --color-primary-dark: #4f46e5;
  --color-primary-light: #818cf8;
  --color-secondary: #a5b4fc;
  --color-bg: #0f172a;
  --color-bg-paper: #1e293b;
  --color-bg-elevated: #334155;
}

// Forest theme
[data-theme="forest"] {
  --color-primary: #22c55e;
  --color-primary-dark: #16a34a;
  --color-primary-light: #4ade80;
  --color-secondary: #86efac;
  --color-bg: #0a1f0a;
  --color-bg-paper: #14331a;
  --color-bg-elevated: #1e4d26;
}

// Ocean theme
[data-theme="ocean"] {
  --color-primary: #0ea5e9;
  --color-primary-dark: #0284c7;
  --color-primary-light: #38bdf8;
  --color-secondary: #7dd3fc;
  --color-bg: #0c1929;
  --color-bg-paper: #132f4c;
  --color-bg-elevated: #1a4166;
}