/* AI Chat Platform - Theme Variables */
:root {
  /* Colors - Modern Black & Gray */
  --bg-primary: #0a0a0a;
  --bg-secondary: #141414;
  --bg-tertiary: #1c1c1c;
  --bg-elevated: #242424;
  --bg-hover: #2a2a2a;
  --bg-active: #323232;
  
  --text-primary: #f5f5f5;
  --text-secondary: #a0a0a0;
  --text-tertiary: #6b6b6b;
  --text-muted: #4a4a4a;
  --text-placeholder: #3a3a3a;
  
  --border-subtle: #1f1f1f;
  --border-default: #2a2a2a;
  --border-strong: #383838;
  
  --accent: #505050;
  --accent-hover: #606060;
  --accent-active: #707070;
  --accent-glow: rgba(255, 255, 255, 0.05);
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 20px rgba(255, 255, 255, 0.03);
  
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-full: 9999px;
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s ease;
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
  
  --sidebar-width: 280px;
  --header-height: 64px;
}