:root{--primary: #10b981;--primary-dark: #059669;--bg: #f9fafb;--text: #111827;--border: #e5e7eb}body{background:var(--bg);color:var(--text)}button{cursor:pointer;transition:all .2s}button:hover{transform:translateY(-1px)}button:disabled{opacity:.5;cursor:not-allowed}