:root{color-scheme:light}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,"Apple Color Emoji","Segoe UI Emoji",Segoe UI Symbol,"Noto Color Emoji",sans-serif;background:#f5f7fb;color:#1a1a1a}.app{min-height:100%;display:flex;flex-direction:column;align-items:center;background:#f5f7fb}.topbar{width:100%;max-width:414px;padding:12px 16px calc(8px + env(safe-area-inset-top));position:sticky;top:0;z-index:2}.title{font-size:16px;font-weight:600}.error{margin-top:8px;color:#d32f2f;font-size:13px}.content{width:100%;max-width:414px;padding:8px 12px 90px;background:transparent}.list{display:flex;flex-direction:column;gap:8px}.empty{padding:24px;color:#8a8f98;text-align:center}.history-item{position:relative;background:#fff;border-radius:10px;overflow:hidden;min-height:48px;box-shadow:0 1px 2px #0000000f}.history-content{padding:12px 16px;transition:transform .2s ease}.history-item.show-delete .history-content{transform:translate(-84px)}.text{font-size:15px;line-height:1.4;word-break:break-word}.time{margin-top:6px;font-size:12px;color:#6b7280}.delete-btn{position:absolute;right:0;top:0;bottom:0;width:84px;min-height:48px;background:#fff;color:#666;border:none;font-size:16px;display:flex;align-items:center;justify-content:center}.input-bar{position:fixed;left:16px;right:16px;bottom:16px;z-index:3;padding:8px 4px calc(8px + env(safe-area-inset-bottom));border-radius:24px;display:flex;justify-content:center;width:calc(100% - 32px);max-width:414px;margin:0 auto}.input-wrapper{position:relative;width:100%}.text-input{width:100%;height:48px;border-radius:24px;border:1px solid #e0e0e0;padding:0 52px 0 16px;font-size:16px;background:#fff;color:#1a1a1a}.send-btn{position:absolute;right:4px;top:50%;transform:translateY(-50%);height:40px;min-width:40px;padding:0;border-radius:20px;border:none;background:#000;color:#fff;font-size:16px;display:flex;align-items:center;justify-content:center;margin:0 4px}.send-btn:disabled{opacity:.4}.loading-spinner{width:20px;height:20px;border:2px solid #ffffff;border-radius:50%;border-top-color:transparent;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.app.loading{pointer-events:none}.app.loading .input-bar{pointer-events:auto}.app.loading .send-btn:disabled{pointer-events:none}@media (max-width: 375px){.text-input{height:44px;font-size:15px;padding:0 48px 0 16px}.send-btn{height:36px;min-width:36px}}