.history-item{background:rgba(255,255,255,.03);border-radius:8px;padding:12px;margin-bottom:8px;border-left:3px solid #8e2de2}.history-meta{font-size:12px;color:var(--text-secondary);margin-bottom:4px}.history-content{font-size:13px;word-break:break-all}.invalid{color:#ef4444}