:root{--primary-color: #1976d2;--secondary-color: #dc004e;--background-color: #fafafa;--text-primary: #212121;--text-secondary: #757575;--border-color: #e0e0e0}*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%;font-family:Roboto,Helvetica,Arial,sans-serif}#root{display:flex;flex-direction:column;min-height:100vh}a{text-decoration:none;color:inherit}button{cursor:pointer}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--background-color)}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-secondary)}