:root{--bg-primary: #111827;--bg-secondary: #1f2937;--bg-tertiary: #374151;--bg-hover: #4b5563;--bg-selected: #134e4a;--text-primary: #f3f4f6;--text-secondary: #9ca3af;--text-muted: #6b7280;--accent-primary: #60a5fa;--accent-secondary: #a78bfa;--accent-success: #4ade80;--accent-warning: #fbbf24;--accent-danger: #f87171;--border-color: #4b5563;--border-hover: #6b7280;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);--shadow-md: 0 4px 6px rgba(0, 0, 0, .5);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .6)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background-color:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh}