:root{--bg-app: #f5f5f5;--bg-card: #ffffff;--text-primary: #1a1a1a;--text-secondary: #4a4a4a;--border-color: #e0e0e0;--accent-color: #6366f1}.dark{--bg-app: #0a0a0a;--bg-card: #151515;--text-primary: #f5f5f5;--text-secondary: #a0a0a0;--border-color: #2a2a2a;--accent-color: #818cf8}body{background-color:var(--bg-app);color:var(--text-primary);transition:background-color .3s ease,color .3s ease}.dark ::-webkit-scrollbar-track{background:#1a1a1a}.dark ::-webkit-scrollbar-thumb{background:#333}.dark ::-webkit-scrollbar-thumb:hover{background:#444}