.gc-container{max-width:800px;margin:1em auto;padding:1em;border:1px solid #ddd;border-radius:6px;background:#fff}
#gc-input{width:100%;box-sizing:border-box;padding:12px;font-size:15px}
.gc-controls{display:flex;justify-content:space-between;align-items:center;margin-top:8px}
.gc-options{margin-top:10px}
.gc-result{margin-top:16px;padding:12px;border:1px solid #eee;background:#fafafa;white-space:pre-wrap}
.gc-output{width:100%;margin-top:10px;min-height:100px;padding:8px}
.gc-error{color:#b00020;margin-top:8px}