:root {
  /* Light Mode (Base variables mapped dynamically) */
  --color-bg: #f4f6f9;
  --color-surface: #ffffff;
  --color-text: #333333;
  --color-text-muted: #888888;
  --color-primary: #4a90e2;
  --color-primary-hover: #357abd;
  --color-secondary: #ff6b6b;
  --color-border: #e0e0e0;
  --color-success: #2ed573;
  --color-warning: #ffa502;
  --color-danger: #ff4757;
  
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
  
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
}

[data-theme='dark'] {
  --color-bg: #0f172a; /* Sleek dark blue/slate */
  --color-surface: #1e293b;
  --color-text: #f8fafc;
  --color-text-muted: #94a3b8;
  --color-primary: #3b82f6;
  --color-primary-hover: #60a5fa;
  --color-secondary: #f43f5e;
  --color-border: #334155;
  
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.2);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.3);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.4), 0 0 20px rgba(59, 130, 246, 0.1);
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-family);
  margin: 0;
  padding: 0;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  -webkit-font-smoothing: antialiased;
}

/* Glassmorphism utilities */
.glass {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}
[data-theme='light'] .glass {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.4);
}