body{margin:0;font-family:system-ui,sans-serif;background:#f4f5f7;color:#1f2937}.layout{display:flex;min-height:100vh}.side{width:200px;background:#111827;color:#fff;padding:20px}.side h2{margin:0 0 24px}.side button{display:block;width:100%;margin:8px 0;padding:9px;text-align:left;background:#1f2937;color:#fff;border:0;border-radius:6px;cursor:pointer}.content{flex:1;padding:24px}.card{background:#fff;padding:18px;border-radius:10px;margin-bottom:18px}.row{display:flex;gap:20px;padding:6px 0;border-bottom:1px solid #e5e7eb}input,select,button{display:block;margin:8px 0;padding:8px 10px;font-size:14px}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:8px;border-bottom:1px solid #e5e7eb}.error{color:#dc2626}