@charset "UTF-8";
:root{--ink:#1e303c;--muted:#76858e;--subtle:#99a5ad;--line:#e7edef;--surface:#fff;--canvas:#f5f8fa;--teal:#128a84;--teal-dark:#08716e;--teal-soft:#e9f6f3;--blue:#537fa7;--danger:#cd535b;--danger-soft:#fff1f1;--shadow:0 18px 60px rgba(31,65,77,.06);--radius:20px;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--canvas);font-synthesis:none;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
*,*::before,*::after{box-sizing:border-box}body{margin:0;min-width:300px}button,input,textarea,select{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed}button,a{touch-action:manipulation}a{color:inherit;text-decoration:none}button{color:inherit}input,select,textarea{width:100%;color:var(--ink);background:#fff;border:1px solid #dfe7ea;border-radius:11px;outline:none;transition:border-color .16s,box-shadow .16s}input,select{min-height:49px;padding:12px 14px;font-size:15px}textarea{padding:12px 14px;resize:vertical;font-size:16px}input::placeholder,textarea::placeholder{color:#a2aeb4}input:focus,textarea:focus,select:focus{border-color:#60aaa4;box-shadow:0 0 0 3px #128a8410}input[aria-invalid=true],textarea[aria-invalid=true]{border-color:var(--danger)}button:focus-visible,a:focus-visible,[tabindex]:focus-visible{outline:3px solid #72b9d6;outline-offset:3px}button:disabled,input:disabled,select:disabled{opacity:.6}button{border:0;background:none}p,h1,h2,h3{margin:0}svg{display:block;width:100%;height:100%}.icon{display:inline-block;flex-shrink:0;width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.65;stroke-linecap:round;stroke-linejoin:round;vertical-align:middle}.icon.small{width:17px;height:17px}.icon.tiny{width:14px;height:14px}.svg-sprite{position:absolute;width:0;height:0;overflow:hidden;pointer-events:none}[hidden]{display:none!important}.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}.button{display:inline-flex;min-height:44px;padding:11px 18px;align-items:center;justify-content:center;gap:9px;border-radius:11px;font-size:14px;font-weight:600;line-height:1.4;white-space:nowrap;border:1px solid transparent;transition:background .16s,box-shadow .16s,transform .16s}.button:active:not(:disabled){transform:translateY(1px)}.button-primary{background:var(--teal);color:white;box-shadow:0 4px 10px #128a8414}.button-primary:hover:not(:disabled){background:var(--teal-dark)}.button-soft{color:var(--teal-dark);background:var(--teal-soft)}.button-soft:hover:not(:disabled){background:#dcf0eb}.button-neutral{background:#f5f7f8;border-color:#e7edef;color:#65747f}.button-neutral:hover{background:#ebf0f2}.button-danger{background:var(--danger);color:#fff}.button-danger:hover{background:#b83d48}.button-primary:disabled{background:#9ac4c0;box-shadow:none}.icon-button{width:37px;height:37px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;flex-shrink:0;color:#7a8c95;transition:background .16s,color .16s}.icon-button:hover:not(:disabled){background:#eef3f4;color:var(--teal)}.text-button{display:inline-flex;align-items:center;justify-content:center;gap:5px;padding:3px 0;color:var(--teal);font-size:12px;font-weight:550;white-space:nowrap}.text-button:hover:not(:disabled){color:var(--teal-dark);text-decoration:underline;text-underline-offset:3px}.spinner{display:inline-block;flex-shrink:0;width:17px;height:17px;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;animation:spin .8s linear infinite;vertical-align:middle}@keyframes spin{to{transform:rotate(360deg)}}.status-dot{display:inline-block;width:6px;height:6px;border-radius:50%;flex-shrink:0;background:#2ca68a}.brand{display:inline-flex;align-items:center;gap:11px;font-size:20px;font-weight:700;letter-spacing:.3px}.brand-mark{display:flex;align-items:center;justify-content:center;width:41px;height:43px;border-radius:12px;background:var(--teal-soft);color:var(--teal)}.brand-mark svg{width:32px;height:32px}.brand-en{display:block;margin-top:2px;font-size:10px;letter-spacing:1.3px;color:#8a9b9f;font-weight:500}.eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--teal);font-size:12px;font-weight:600;letter-spacing:1.2px}.eyebrow .icon{width:16px;height:16px}.field{margin-bottom:21px}.field label,.label-row{display:flex;align-items:center;gap:7px;margin-bottom:9px;font-size:13px;font-weight:600;color:#3e535f}.label-row{justify-content:space-between}.label-row label{margin:0}.optional{font-size:11px;font-weight:400;color:#a2adb5}.required-mark{font-size:12px;color:var(--teal)}.field-help{font-size:11px;line-height:1.8;color:#8e9aa3;margin-top:7px}.input-wrap,.select-wrap{position:relative}.input-icon{position:absolute;left:14px;top:15px;color:#91a6ad;pointer-events:none}.input-wrap input{padding-left:44px}.input-action{position:absolute;right:6px;top:6px;width:36px;height:36px}.code-input{font-family:ui-monospace,SFMono-Regular,"SF Mono",Consolas,"PingFang SC",monospace;font-size:16px;letter-spacing:1.5px;padding-right:46px}.code-input::placeholder{font:14px -apple-system,BlinkMacSystemFont,"PingFang SC",sans-serif;letter-spacing:0}.select-wrap select{appearance:none;-webkit-appearance:none;padding-left:43px;padding-right:37px;font-size:14px}.select-chevron{position:absolute;right:13px;top:16px;width:17px;height:17px;color:#8d9ea8;pointer-events:none}.custom-ttl{display:flex;gap:10px;margin-top:10px}.custom-ttl input{flex:1;min-width:0}.custom-ttl select{width:100px}.form-error,.notice{padding:10px 12px;border-radius:9px;font-size:12px;line-height:1.8;margin:0 0 15px;overflow-wrap:anywhere}.form-error{background:var(--danger-soft);color:#b74d55}.notice{color:#607c88;background:#edf4f8;border:1px solid #e0ebf0}.notice.is-warning{background:#fff8e9;color:#9b7934;border-color:#f5ead0}
/* Landing */
.join-view{max-width:1140px;min-height:100svh;margin:0 auto;padding:42px 40px 23px}.landing-header{display:flex;align-items:center;justify-content:space-between;gap:20px}.header-note{display:flex;align-items:center;gap:8px;color:#91a0a7;font-size:11px;letter-spacing:.7px}.landing-grid{display:grid;grid-template-columns:1fr 418px;gap:70px;align-items:center;min-height:calc(100svh - 170px);padding:44px 0}.welcome-panel{padding-bottom:20px}.welcome-panel h1{font-size:43px;font-weight:750;line-height:1.55;letter-spacing:-1.5px;margin-top:21px}.welcome-panel h1 span{color:var(--teal)}.welcome-description{font-size:14px;line-height:2.05;color:#85939c;margin-top:20px}.feature-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:25px}.feature-tags>span{display:inline-flex;align-items:center;gap:6px;background:#fff;padding:7px 9px;border:1px solid var(--line);border-radius:7px;font-size:10px;color:#79909a}.feature-tags .icon{width:15px;height:15px;color:#679a9d}.join-card{padding:32px 32px 23px;border:1px solid #e7edef;border-radius:22px;background:#fff;box-shadow:var(--shadow)}.card-kicker{display:flex;align-items:center;gap:7px;color:#8a9aa2;font-size:11px;letter-spacing:.6px}.mini-icon{display:flex;align-items:center;justify-content:center;width:25px;height:25px;background:var(--teal-soft);color:var(--teal);border-radius:7px}.mini-icon .icon{width:15px;height:15px}.join-card h2{font-size:22px;letter-spacing:-.5px;line-height:1.5;margin-top:14px}.card-description{font-size:12px;line-height:1.9;color:#8c99a2;margin-top:8px;margin-bottom:26px}.join-submit{width:100%;min-height:48px;margin-top:3px;justify-content:space-between;padding-left:18px;padding-right:18px}.join-security{display:flex;gap:9px;align-items:flex-start;border-top:1px solid #edf1f2;padding-top:18px;margin-top:20px;color:#9aa7ae}.join-security>.icon{width:16px;height:16px;margin-top:2px}.join-security p{font-size:10px;line-height:1.9}.join-security strong{font-weight:400;color:#7c8f98}.landing-footer{display:flex;justify-content:space-between;font-size:10px;color:#a5afb5;line-height:2;letter-spacing:.4px}.landing-footer i{font-style:normal;margin:0 8px;color:#b7c3c9}.device-illustration{position:relative;margin-top:35px;height:230px;max-width:425px}.illustration-grid{position:absolute;inset:4px 5px 17px 5px;background-image:radial-gradient(#cad9dd 1px,transparent 1px);background-size:16px 16px;mask-image:radial-gradient(ellipse,#000 0,transparent 72%);-webkit-mask-image:radial-gradient(ellipse,#000 0,transparent 72%);opacity:.65}.illustration-desktop{position:absolute;left:5px;top:30px;width:266px;height:152px;border-radius:12px;background:#fff;border:1px solid #e0e9ec;box-shadow:0 12px 30px #29475a08;transform:rotate(-3deg);padding:14px 19px}.illustration-window-bar{display:flex;align-items:center;gap:4px;height:17px}.illustration-window-bar i{width:5px;height:5px;border-radius:50%;background:#dce6e9}.illustration-window-bar i:first-child{background:#97cfc0}.illustration-window-bar span{font-size:8px;letter-spacing:.8px;margin-left:auto;color:#a5b4bb}.illustration-line{margin-top:10px;height:6px;width:54%;border-radius:4px;background:#eff3f4}.illustration-line.long{margin-top:15px;width:78%}.illustration-file{display:flex;align-items:center;gap:7px;margin-top:13px;border-radius:7px;background:#eff8f6;padding:10px;color:#5c8f87;font-size:9px}.illustration-file .icon.small{margin-left:auto;width:14px;height:14px}.illustration-phone{position:absolute;right:22px;top:5px;width:95px;height:172px;border:5px solid #fff;border-radius:20px;background:#edf5f5;box-shadow:0 10px 30px #34616e12,0 0 0 1px #dbe6ea;transform:rotate(7deg);display:flex;align-items:center;flex-direction:column}.phone-notch{height:7px;width:33px;border-radius:0 0 6px 6px;background:#fff}.phone-icon{display:block;width:36px;height:36px;color:var(--teal);margin-top:23px}.phone-line{width:48px;height:5px;border-radius:4px;background:#d7e7e5;margin-top:12px}.phone-line.short{width:32px;margin-top:6px}.phone-check{display:flex;align-items:center;gap:4px;font-size:8px;color:var(--teal);margin-top:18px}.phone-check .icon{width:12px;height:12px}.illustration-link{position:absolute;top:105px;left:249px;display:flex;align-items:center;justify-content:center;height:35px;width:35px;color:var(--teal);background:#fff;box-shadow:0 4px 10px #28655415;border:1px solid #def0e9;border-radius:50%}.illustration-caption{position:absolute;left:66px;bottom:0;display:flex;gap:7px;align-items:center;font-size:10px;color:#9ba9af}.illustration-caption .status-dot{width:4px;height:4px}
/* Workspace */
body.is-room{overflow:hidden}.room-shell{display:grid;grid-template-columns:247px minmax(0,1fr);max-width:1200px;height:calc(var(--app-height,100dvh) - 48px);min-height:300px;margin:24px auto;border:1px solid #e1e9ed;border-radius:23px;box-shadow:0 12px 65px #2b4a6010;background:#fff;overflow:hidden}.room-sidebar{display:flex;flex-direction:column;background:#f9fbfc;border-right:1px solid var(--line);padding:31px 22px 23px;min-height:0;overflow:auto}.room-sidebar>.brand{font-size:19px;gap:9px;padding-left:3px}.room-sidebar .brand-mark{width:37px;height:39px}.room-sidebar .brand-mark svg{width:29px;height:29px}.sidebar-intro{margin:43px 4px 26px}.sidebar-intro .eyebrow{font-size:8px;letter-spacing:1.1px;color:#a3b4b9}.sidebar-intro h2{font-size:24px;line-height:1.65;letter-spacing:-.5px;margin-top:13px;font-weight:650}.sidebar-intro p{font-size:11px;line-height:1.9;color:#91a0a8;margin-top:12px}.room-code-card{border:1px solid #e1e9ec;border-radius:13px;background:#fff;padding:13px 13px 14px}.room-code-card .label-row{font-size:10px;color:#8ea0a9;font-weight:400;margin-bottom:4px}.room-code-card .icon-button{width:25px;height:25px}.room-code-card .icon{width:16px;height:16px}.room-code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere;letter-spacing:2px;font-size:17px;line-height:1.6;padding:4px 0 14px;white-space:pre-wrap;max-height:130px;overflow:auto}.room-code-card .button{width:100%;min-height:34px;padding:8px;font-size:11px;gap:7px;border-radius:7px}.sidebar-details{display:flex;flex-direction:column;gap:20px;padding:28px 4px}.sidebar-details>div,.sidebar-details>button{display:flex;align-items:center;gap:8px;font-size:10px;color:#8fa1aa;width:100%;padding:0;text-align:left}.sidebar-details .icon{width:15px;height:15px;color:#8ea9b1}.sidebar-details strong{font-size:10px;font-weight:500;color:#5c7482;margin-left:auto;max-width:87px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-details .icon.small{width:12px;height:12px;margin-left:-4px}.sidebar-details>button:hover strong{color:var(--teal)}.sidebar-bottom{margin-top:auto;padding-top:26px;color:#9dadb5}.sidebar-bottom>.icon{width:16px;height:16px;float:left;margin:3px 7px 0 4px}.sidebar-bottom p{font-size:9px;line-height:1.9}.sidebar-footer{display:block;font-size:9px;letter-spacing:1px;margin:26px 4px 0;color:#b0bbc1}.chat-pane{display:flex;flex-direction:column;min-height:0;min-width:0;position:relative}.chat-header{flex-shrink:0;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:22px 28px 18px;border-bottom:1px solid #eff2f3;background:#fff}.chat-heading{display:flex;align-items:center;gap:11px;min-width:0}.room-avatar{width:42px;height:42px;display:flex;align-items:center;justify-content:center;flex-shrink:0;border-radius:13px;background:#eaf5f1;color:var(--teal)}.room-avatar .icon{width:31px;height:31px;stroke:none;fill:currentColor}.chat-heading h1{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:650;line-height:1.5}.chat-heading p{margin-top:4px;font-size:10px;color:#8d9ca6;line-height:1.5}.connection-badge{display:inline-flex;align-items:center;gap:5px;padding:3px 6px;border-radius:5px;font-size:9px;line-height:1.3;font-weight:400;white-space:nowrap;background:#edf8f3;color:#48927c}.connection-badge .status-dot{width:4px;height:4px;background:currentColor}.connection-badge.is-connecting,.connection-badge.is-reconnecting,.connection-badge.is-polling{background:#fff7e8;color:#af8b43}.connection-badge.is-offline{color:#ba6970;background:#fff1f1}.connection-badge.is-connecting .status-dot,.connection-badge.is-reconnecting .status-dot{animation:pulse 1.5s ease-in-out infinite}@keyframes pulse{50%{opacity:.35}}.header-actions{display:flex;align-items:center;gap:5px}.header-actions .icon-button{width:34px;height:34px;color:#8b9ba5}.header-actions .icon{width:18px;height:18px}.header-divider{height:17px;width:1px;background:#e7edef;margin:0 4px}.leave-button:hover:not(:disabled){background:var(--danger-soft);color:var(--danger)}.room-notice{display:flex;align-items:center;gap:6px;flex-shrink:0;min-height:39px;padding:8px 28px;background:#fcfdfd;font-size:10px;color:#99a9b0;border-bottom:1px solid #f0f4f5}.room-notice>.icon{color:#90aea9;width:14px;height:14px}.room-notice>button{display:flex;align-items:center;gap:5px;font-size:10px;color:#82a49f;margin-left:auto;padding:0;white-space:nowrap}.room-notice>button:hover{color:var(--teal)}.chat-error{display:flex;align-items:center;gap:8px;padding:9px 22px;background:#fff8e9;border-bottom:1px solid #f2e8d4;font-size:11px;line-height:1.7;color:#a08449;flex-shrink:0}.chat-error>span{flex:1;overflow-wrap:anywhere}.chat-error .text-button{font-size:11px}.message-area{position:relative;display:flex;flex:1;min-height:0;background:#fdfefe}.message-scroll{overflow-y:auto;overflow-x:hidden;overscroll-behavior:contain;scrollbar-gutter:stable;scrollbar-width:thin;scrollbar-color:#d6e1e5 transparent;padding:12px 27px 25px;flex:1;min-height:0;outline-offset:-4px!important}.message-scroll::-webkit-scrollbar{width:5px}.message-scroll::-webkit-scrollbar-thumb{background:#d6e1e5;border-radius:10px}.history-controls{display:flex;justify-content:center;min-height:25px;margin-bottom:15px}.history-button{display:inline-flex;align-items:center;gap:5px;font-size:10px;color:#9aaab3;border-radius:20px;padding:5px 11px}.history-button:hover{background:#edf3f5;color:var(--teal)}.history-state{display:flex;align-items:center;gap:7px;justify-content:center;color:#9baeb5;font-size:10px}.history-state .spinner{width:12px;height:12px;border-width:1.5px}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:calc(100% - 60px);text-align:center;padding:30px 0 40px}.empty-art{position:relative;width:86px;height:84px;margin-bottom:22px;color:#53a49a;display:flex;align-items:center;justify-content:center}.empty-art>svg{width:64px;height:64px;position:relative;transform:rotate(-5deg)}.empty-art-back{position:absolute;inset:0;background:#edf8f5;border-radius:26px;transform:rotate(12deg)}.empty-art-spark{position:absolute;right:-13px;top:-5px;width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:10px;background:#fff;box-shadow:0 3px 10px #185b5b0b;color:#d2ac69}.empty-art-spark .icon{width:16px;height:16px}.empty-state h2{font-size:16px;font-weight:550;letter-spacing:.2px;color:#6b818c}.empty-state p{font-size:12px;line-height:2;color:#a3b0b8;margin-top:11px;white-space:pre-line}.empty-tags{display:flex;gap:17px;margin-top:23px;color:#9eb6bb;font-size:10px}.empty-tags>span{display:flex;align-items:center;gap:5px}.empty-tags .icon{width:14px;height:14px}.message-list{display:flex;flex-direction:column;gap:23px}.date-separator{display:flex;align-items:center;justify-content:center;gap:13px;color:#adbac1;font-size:10px;margin:3px 0 1px}.date-separator::before,.date-separator::after{content:"";height:1px;width:34px;background:#ecf1f3}.message-row{display:flex;align-items:flex-start;gap:9px;min-width:0;animation:message-in .18s ease-out}.message-avatar{display:flex;align-items:center;justify-content:center;background:#edf2f6;color:#7e99aa;border:1px solid #e7eef2;font-size:11px;font-weight:600;width:29px;height:29px;border-radius:10px;flex-shrink:0;margin-top:2px}.message-row.is-mine{flex-direction:row-reverse}.is-mine .message-avatar{background:#e4f3ed;color:#5c9e8d;border-color:#dcede6}.message-main{display:flex;flex-direction:column;align-items:flex-start;min-width:0;max-width:calc(100% - 42px)}.is-mine .message-main{align-items:flex-end}.message-meta{display:flex;align-items:center;gap:9px;margin-bottom:7px;font-size:10px;line-height:1.5}.message-sender{color:#82949f;max-width:185px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.message-created{font-size:9px;color:#b0bcc4}.is-mine .message-meta{flex-direction:row-reverse}.is-mine .message-sender{color:#74a497}.message-bubble{border-radius:3px 13px 13px 13px;background:#f0f4f6;max-width:100%;border:1px solid #eaf0f2;overflow:hidden}.is-mine .message-bubble{border-radius:13px 3px 13px 13px;background:#edf7f3;border-color:#dfefe7}.message-text{font-size:14px;line-height:1.85;padding:11px 14px;white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word;min-width:40px;max-width:520px;color:#425a65;user-select:text}.message-footer{display:flex;align-items:center;flex-wrap:wrap;gap:10px;max-width:100%;margin-top:7px;line-height:1.5}.is-mine .message-footer{justify-content:flex-end}.message-expiry{font-size:9px;color:#aab7be;white-space:nowrap}.message-expiry.is-soon{color:#bb9561}.message-actions{display:flex;align-items:center;gap:10px}.message-action{display:inline-flex;align-items:center;gap:3px;color:#95a8b1;font-size:10px;padding:2px 0;line-height:1.5}.message-action:hover{color:var(--teal)}.message-action.delete-action:hover{color:var(--danger)}.message-action:disabled{opacity:.45}.message-action .icon{width:12px;height:12px}.file-content{display:flex;align-items:center;gap:12px;padding:16px;width:300px;max-width:100%}.file-icon{display:flex;align-items:center;justify-content:center;flex-direction:column;gap:2px;width:43px;height:47px;background:#fff;border:1px solid #e2ebef;border-radius:9px;color:#87a9ba;flex-shrink:0}.file-icon>.icon{width:23px;height:23px}.file-extension{font-size:6px;font-weight:700;letter-spacing:.6px;line-height:1;color:#97acb9}.file-info{min-width:0;display:flex;flex-direction:column;gap:6px}.file-name{font-size:12px;font-weight:550;line-height:1.6;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:block}.file-detail{font-size:10px;color:#9caeb6}.image-content{width:min(320px,63vw);max-width:100%;padding:5px}.image-button{display:block;padding:0;position:relative;overflow:hidden;border-radius:8px;width:100%;height:220px;background:#e4eeed;color:#8da7a6;text-align:center}.image-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:9px;width:100%;height:100%;font-size:11px}.image-placeholder>.icon{width:30px;height:30px;opacity:.7}.image-preview{width:100%;height:100%;object-fit:cover}.image-open-hint{position:absolute;right:8px;bottom:8px;display:flex;align-items:center;gap:4px;padding:4px 7px;background:#1a353f7a;backdrop-filter:blur(6px);border-radius:6px;color:#fff;font-size:9px;opacity:0;transition:opacity .18s}.image-button:hover .image-open-hint,.image-button:focus-visible .image-open-hint{opacity:1}.image-caption{display:flex;align-items:center;gap:10px;font-size:9px;color:#8fa6ac;padding:8px 6px 4px}.image-name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.image-size{white-space:nowrap}.jump-latest{position:absolute;right:24px;bottom:16px;background:#fff;border:1px solid #dcece6;border-radius:20px;box-shadow:0 4px 15px #2159510d;padding:8px 12px;display:flex;align-items:center;gap:5px;font-size:11px;color:var(--teal)}.jump-latest:hover{background:#f3faf6}@keyframes message-in{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}
/* Composer and uploads */
.composer-area{flex-shrink:0;padding:15px 24px 13px;background:#fff;border-top:1px solid #eaf0f2}.composer{border:1px solid #e1e9ed;border-radius:13px;background:#fcfdfd;overflow:hidden;transition:border-color .16s,box-shadow .16s}.composer:focus-within{border-color:#a0c9c1;box-shadow:0 0 0 3px #128a8406}.composer textarea{display:block;width:100%;min-height:52px;max-height:150px;padding:15px 16px 8px;border:0;border-radius:0;box-shadow:none;background:transparent;resize:none;line-height:1.65;font-size:14px;overflow-y:auto;scrollbar-width:thin}.composer textarea:focus{box-shadow:none}.composer-toolbar{display:flex;align-items:center;justify-content:space-between;gap:9px;padding:5px 9px 8px}.attachment-actions,.send-actions{display:flex;align-items:center;gap:4px}.attachment-actions .icon-button{width:32px;height:31px;color:#8fa3af;border-radius:7px}.attachment-actions .icon{width:19px;height:19px}.attachment-hint{font-size:10px;color:#b1bec6;margin-left:6px}.send-actions{gap:10px}.send-button{min-height:34px;min-width:79px;font-size:12px;gap:8px;padding:8px 12px;border-radius:8px}.send-button .icon{width:15px;height:15px}.send-button .spinner{width:13px;height:13px;border-width:1.5px}.text-count{font-size:9px;color:#97a8b2}.text-count.is-over{color:var(--danger)}.composer-footnote{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 3px 0;font-size:9px;line-height:1.5;color:#b0bcc4}.composer-footnote>span:last-child{display:flex;align-items:center;gap:4px}.composer-footnote .icon{width:11px;height:11px}.mobile-hint{display:none}.composer-error{font-size:11px;line-height:1.7;color:#bf6267;padding:7px 3px 0;overflow-wrap:anywhere}.upload-panel{display:flex;align-items:center;gap:10px;background:#f3f9f7;border:1px solid #e0eeea;border-radius:11px;padding:11px 9px 11px 12px;margin-bottom:10px;min-width:0}.upload-panel.is-error{background:#fff8f5;border-color:#f5e5dc}.upload-file-icon{width:31px;height:35px;display:flex;align-items:center;justify-content:center;color:#79a59b;flex-shrink:0}.upload-info{flex:1;min-width:0}.upload-topline,.upload-bottomline{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:10px;line-height:1.6}.upload-topline strong{font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#588579}.upload-topline>span{color:#76a193;flex-shrink:0}.upload-bottomline{margin-top:3px;color:#97aea8;font-size:9px;align-items:flex-start}.upload-bottomline>span{overflow-wrap:anywhere}.upload-bottomline>div{display:flex;gap:10px;flex-shrink:0}.upload-bottomline .text-button{font-size:10px}.upload-panel progress{display:block;width:100%;height:4px;border:0;border-radius:4px;overflow:hidden;margin-top:7px;background:#dfebe7;color:var(--teal);appearance:none;-webkit-appearance:none}.upload-panel progress::-webkit-progress-bar{background:#dfebe7;border-radius:4px}.upload-panel progress::-webkit-progress-value{background:#70b3a1;border-radius:4px;transition:width .2s}.upload-panel progress::-moz-progress-bar{background:#70b3a1;border-radius:4px}.upload-panel>.icon-button{width:27px;height:30px}.upload-panel>.icon-button .icon{width:16px;height:16px}.drop-zone{position:absolute;z-index:15;inset:10px;display:flex;align-items:center;justify-content:center;text-align:center;border:2px dashed #6db5a9;border-radius:15px;background:#f2fbf8f2;backdrop-filter:blur(5px);pointer-events:none}.drop-icon{display:inline-flex;align-items:center;justify-content:center;background:#ddf2e9;border-radius:18px;width:62px;height:62px;color:var(--teal);margin-bottom:20px}.drop-icon>.icon{width:31px;height:31px}.drop-zone h2{font-size:20px;font-weight:600;color:#3b8276}.drop-zone p{font-size:12px;color:#8ba79f;margin-top:10px}
/* Dialogs */
body.has-modal{overflow:hidden}.modal-overlay{position:fixed;inset:0;z-index:40;display:flex;align-items:center;justify-content:center;padding:24px;background:#223b4d55;backdrop-filter:blur(5px);overscroll-behavior:contain;animation:modal-in .15s ease-out}.modal{width:100%;max-width:440px;max-height:calc(var(--app-height,100dvh) - 48px);overflow-y:auto;overscroll-behavior:contain;background:#fff;box-shadow:0 25px 80px #15394e20;border:1px solid #e6edef;border-radius:20px;padding:26px;outline:none}.modal-header{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:26px}.modal h2{font-size:19px;font-weight:650;line-height:1.6;letter-spacing:-.3px}.modal-header>.icon-button{margin-right:-6px;margin-top:-8px}.modal-eyebrow{display:block;color:#9aadb2;font-size:10px;letter-spacing:1px;margin-bottom:5px}.settings-modal .field{margin-bottom:22px}.settings-explainer{display:flex;gap:8px;align-items:flex-start;padding:12px;background:#f0f8f5;border:1px solid #e3f0e8;border-radius:10px;color:#779a90}.settings-explainer>.icon{width:17px;height:17px;margin-top:2px}.settings-explainer p{font-size:11px;line-height:1.9}.settings-explainer strong{color:#5f8e80;font-weight:550}.settings-modal .form-error{margin-top:15px;margin-bottom:0}.modal-actions{display:flex;justify-content:flex-end;align-items:center;gap:10px;margin-top:25px}.modal-actions .button{min-height:42px;font-size:13px}.modal-security{display:flex;align-items:flex-start;gap:6px;font-size:9px;line-height:1.8;color:#a0afb6;margin-top:20px;padding-top:16px;border-top:1px solid #eef2f4}.modal-security .icon{width:13px;height:13px;margin-top:2px}.confirm-modal{max-width:370px;padding:27px}.confirm-icon{display:flex;width:43px;height:43px;border-radius:14px;align-items:center;justify-content:center;background:#fff2ec;color:#ce9274;margin-bottom:18px}.confirm-modal h2{font-size:19px}.confirm-modal p,.modal-description{color:#889aa5;font-size:12px;line-height:1.95;margin-top:10px;overflow-wrap:anywhere}.confirm-modal .modal-actions{margin-top:26px}.confirm-modal .modal-actions .button{flex:1}.manual-copy-text{height:180px;max-height:35vh;font-size:14px;line-height:1.8;resize:vertical;margin-top:17px;white-space:pre-wrap}.save-file{display:flex;align-items:center;gap:12px;padding:14px;border-radius:12px;background:#f6f9fa}.save-file>div{min-width:0}.save-file strong{display:block;font-size:13px;line-height:1.7;font-weight:500;overflow-wrap:anywhere}.save-file p{font-size:11px;color:#98a8b2;margin-top:4px}.lightbox-overlay{padding:0;background:#13252bf2;backdrop-filter:blur(10px);z-index:45}.lightbox{width:100%;height:var(--app-height,100dvh);display:flex;flex-direction:column;min-height:0;padding-top:env(safe-area-inset-top);padding-bottom:env(safe-area-inset-bottom);outline:none}.lightbox-header{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 24px;color:#ecf5f5;flex-shrink:0}.lightbox-header>div:first-child{min-width:0}.lightbox-header>div:last-child{display:flex;align-items:center;gap:7px}.lightbox-header h2{font-size:13px;line-height:1.7;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:70vw}.lightbox-header p{font-size:10px;line-height:1.7;color:#82989c;margin-top:2px}.lightbox .icon-button{color:#b2c4c8}.lightbox .icon-button:hover{background:#ffffff15;color:#fff}.lightbox-stage{position:relative;display:flex;align-items:center;justify-content:center;flex:1;min-height:0;overflow:auto;overscroll-behavior:contain;padding:10px 30px}.lightbox-stage>img{width:auto;height:auto;max-width:100%;max-height:100%;object-fit:contain;border-radius:5px;flex-shrink:0;cursor:zoom-in}.lightbox-stage.is-zoomed{display:block;text-align:center}.lightbox-stage.is-zoomed>img{max-width:none;max-height:none;cursor:zoom-out;border-radius:0}.lightbox-status{display:flex;align-items:center;justify-content:center;gap:10px;flex-direction:column;color:#a7c0c2;font-size:12px;text-align:center;line-height:1.8;max-width:290px}.lightbox-status .spinner{width:22px;height:22px}.lightbox-hint{text-align:center;font-size:10px;color:#6f898e;padding:18px 15px 22px;flex-shrink:0}.toast-region{position:fixed;z-index:80;left:50%;bottom:calc(24px + env(safe-area-inset-bottom));transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:8px;max-width:calc(100% - 32px);width:max-content;pointer-events:none}.toast{display:flex;align-items:center;gap:9px;padding:12px 16px;border-radius:11px;background:#28434e;color:#fff;font-size:12px;line-height:1.7;box-shadow:0 6px 24px #102f4033;animation:toast-in .18s ease-out;max-width:100%;pointer-events:auto;overflow-wrap:anywhere}.toast.is-error{background:#825052}.toast>span{min-width:0}.toast button{color:#b7e5d4;font-size:11px;white-space:nowrap;text-decoration:underline;text-underline-offset:3px;padding:4px;flex-shrink:0}.noscript-notice{position:fixed;bottom:0;left:0;right:0;background:#fff4df;color:#7a5f2f;font-size:14px;padding:18px 22px;text-align:center;z-index:100}@keyframes modal-in{from{opacity:0}to{opacity:1}}@keyframes toast-in{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}
@media(min-width:1248px){.room-shell{height:calc(var(--app-height,100dvh) - 64px);margin:32px auto}.room-sidebar{padding-top:34px}.chat-header{padding-top:25px;padding-bottom:21px}.message-scroll{padding-left:32px;padding-right:32px}.composer-area{padding-left:28px;padding-right:28px}.sidebar-intro{margin-top:51px}}
@media(max-width:1040px){.join-view{padding:32px 32px 22px}.landing-grid{gap:35px;grid-template-columns:1fr 390px}.welcome-panel h1{font-size:36px}.join-card{padding:28px}.feature-tags{gap:6px}.feature-tags>span{font-size:9px;padding:6px}.device-illustration{transform:scale(.9);transform-origin:left center;max-width:350px}.illustration-phone{right:0}.illustration-link{left:245px}.room-shell{margin:16px;height:calc(var(--app-height,100dvh) - 32px);grid-template-columns:220px minmax(0,1fr)}.room-sidebar{padding:26px 17px 20px}.chat-header{padding-left:21px;padding-right:21px}.room-notice{padding-left:21px;padding-right:21px}.message-scroll{padding-left:20px;padding-right:20px}.composer-area{padding-left:18px;padding-right:18px}.sidebar-intro h2{font-size:22px}.sidebar-intro .eyebrow{font-size:7px}}
@media(max-width:800px){.join-view{max-width:520px;padding:calc(24px + env(safe-area-inset-top)) 22px calc(20px + env(safe-area-inset-bottom))}.header-note{font-size:9px;letter-spacing:0;gap:5px}.header-note .status-dot{width:4px;height:4px}.brand{font-size:18px;gap:9px}.brand-mark{width:36px;height:38px}.brand-mark svg{width:29px;height:29px}.brand-en{font-size:8px;letter-spacing:1.1px}.landing-grid{display:flex;flex-direction:column;gap:27px;padding:34px 0 28px;min-height:0;align-items:stretch}.welcome-panel{padding:0 4px}.eyebrow{font-size:10px;letter-spacing:.6px}.welcome-panel h1{font-size:33px;line-height:1.45;letter-spacing:-1px;margin-top:13px}.welcome-description{font-size:12px;line-height:1.9;margin-top:13px}.welcome-description br{display:none}.feature-tags{margin-top:17px;gap:8px}.feature-tags>span{font-size:9px;padding:6px 8px;background:#ffffff88}.device-illustration{display:none}.join-card{border-radius:18px;padding:25px 25px 21px}.join-card h2{font-size:21px;margin-top:12px}.card-description{margin-bottom:23px}.landing-footer{display:flex;flex-direction:column;align-items:center;gap:2px;font-size:9px}.room-shell{display:flex;border:0;border-radius:0;box-shadow:none;margin:0;width:100%;height:var(--app-height,100dvh);min-height:0}.room-sidebar{display:none}.chat-pane{width:100%;height:100%}.chat-header{padding:calc(13px + env(safe-area-inset-top)) 17px 13px}.chat-heading{gap:9px}.chat-heading h1{font-size:16px;gap:7px}.room-avatar{height:37px;width:37px;border-radius:12px}.room-avatar .icon{width:28px;height:28px}.chat-heading p{font-size:9px;margin-top:3px}.header-actions{gap:2px}.header-actions .icon-button{width:33px;height:34px}.header-divider{margin:0 2px}.room-notice{padding:8px 18px;font-size:9px;min-height:35px;gap:5px}.room-notice>button{font-size:9px;gap:4px}.room-notice>button .icon.small{width:12px;height:12px}.room-notice>button .icon.tiny{width:10px;height:10px}.message-scroll{padding:10px 17px 22px;scrollbar-gutter:auto}.history-controls{margin-bottom:14px}.message-list{gap:24px}.message-text{font-size:14px;padding:10px 13px}.message-avatar{width:27px;height:27px;font-size:10px;border-radius:9px}.message-row{gap:8px}.message-main{max-width:calc(100% - 35px)}.message-meta{font-size:9px;margin-bottom:6px;gap:7px}.message-sender{max-width:165px}.message-created{font-size:8px}.message-expiry{font-size:8px}.message-action{font-size:9px;gap:3px}.message-actions{gap:11px}.message-footer{gap:10px}.message-action .icon{width:11px;height:11px}.image-content{width:min(300px,64vw)}.image-button{height:190px}.image-caption{font-size:8px}.image-open-hint{opacity:1;font-size:8px;right:6px;bottom:6px}.image-open-hint .icon{width:12px;height:12px}.file-content{padding:14px 12px;width:265px;gap:10px}.file-icon{width:37px;height:43px;border-radius:8px}.file-icon>.icon{width:21px;height:21px}.file-name{font-size:12px}.file-detail{font-size:9px}.empty-state h2{font-size:15px}.empty-state p{font-size:11px}.empty-art{width:78px;height:76px}.empty-art>svg{width:58px;height:58px}.composer-area{padding:11px 13px calc(10px + env(safe-area-inset-bottom))}.composer{border-radius:12px}.composer textarea{min-height:51px;padding:13px 13px 7px;font-size:16px;max-height:132px;line-height:1.6}.composer-toolbar{padding:3px 7px 7px}.attachment-actions .icon-button{width:34px;height:31px}.attachment-hint{display:none}.send-button{font-size:12px;min-height:34px;min-width:76px}.composer-footnote{font-size:8px;padding-top:7px}.desktop-hint{display:none}.mobile-hint{display:inline}.upload-panel{padding:9px 7px 9px 8px;gap:7px}.upload-bottomline{font-size:8px;gap:7px}.upload-file-icon{width:24px}.upload-file-icon .icon{width:20px;height:20px}.jump-latest{right:17px;bottom:13px;font-size:10px;padding:8px 10px}.chat-error{padding:9px 15px;font-size:10px;gap:6px}.chat-error .text-button{font-size:10px}.modal-overlay{padding:18px;align-items:center}.modal{padding:23px;max-height:calc(var(--app-height,100dvh) - 36px);border-radius:18px}.modal h2{font-size:18px}.modal input,.modal select,.join-card input:not(.code-input),.join-card select{font-size:16px}.modal input,.modal select{min-height:47px}.modal-header{margin-bottom:23px}.modal-actions .button{min-height:43px}.lightbox-overlay{padding:0}.lightbox-header{padding:14px 13px}.lightbox-header h2{font-size:12px;max-width:49vw}.lightbox-header p{font-size:9px}.lightbox-header>div:last-child{gap:2px}.lightbox .icon-button{width:33px;height:36px}.lightbox .icon{width:19px;height:19px}.lightbox-stage{padding:5px 10px}.lightbox-hint{font-size:9px;padding:14px 10px 19px}.toast-region{bottom:calc(17px + env(safe-area-inset-bottom));max-width:calc(100% - 26px)}.toast{font-size:11px;padding:11px 14px}.drop-zone{inset:8px;border-radius:12px}}
@media(max-width:370px){.join-view{padding-left:17px;padding-right:17px}.header-note{font-size:8px}.welcome-panel h1{font-size:29px}.feature-tags{gap:5px}.feature-tags>span{padding:5px 6px;font-size:8px;gap:4px}.join-card{padding:23px 20px}.join-card h2{font-size:19px}.chat-header{padding-left:12px;padding-right:12px}.chat-heading h1{font-size:15px;gap:6px}.connection-badge{font-size:8px;padding:3px 4px}.room-avatar{width:32px;height:34px}.chat-heading{gap:7px}.header-actions .icon-button{width:29px}.room-notice{padding-left:12px;padding-right:12px;font-size:8px}.room-notice>button{font-size:8px}.room-notice>button>.icon:first-child{display:none}.message-scroll{padding-left:12px;padding-right:12px}.image-button{height:160px}.file-content{width:235px}.composer-footnote{font-size:7px}.text-count{font-size:8px}.modal{padding:21px}.modal-actions{gap:8px}.modal-actions .button{font-size:12px;padding:10px 14px}}
@media(max-height:600px) and (min-width:801px){.room-shell{margin:8px auto;height:calc(var(--app-height,100dvh) - 16px)}.room-sidebar{padding-top:20px}.sidebar-intro{margin-top:25px;margin-bottom:18px}.sidebar-intro h2{font-size:20px}.sidebar-details{gap:15px;padding-top:20px;padding-bottom:15px}.sidebar-bottom{padding-top:15px}.sidebar-footer{margin-top:15px}.chat-header{padding-top:13px;padding-bottom:13px}.composer textarea{min-height:44px}.composer-area{padding-top:10px;padding-bottom:9px}.composer-footnote{padding-top:7px}}
@media(max-width:800px){body.is-room .toast-region{top:calc(92px + env(safe-area-inset-top));bottom:auto}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}