:root{font-family:system-ui,Arial,sans-serif;line-height:1.5;font-weight:400;color:#eaeaea;background:#151515}body{margin:0;min-height:100vh}button{border-radius:8px;border:1px solid #333;padding:.6em 1.1em;font-size:14px;background:#222;color:#fff;cursor:pointer}button:disabled{opacity:.6;cursor:not-allowed}select{padding:.4em}