:root{--blue:#345ef5;--blue-dark:#2348d3;--ink:#20283e;--muted:#82899a;--line:#e9edf4;--bg:#f5f7fb;--surface:#fff;--radius:18px;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);font-synthesis:none}*{box-sizing:border-box}body{margin:0;background:var(--bg)}button,input,textarea{font:inherit}button{cursor:pointer}button{color:inherit}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid #9baeff;outline-offset:3px}button:disabled{opacity:.4;cursor:default}button svg,span svg{width:20px;height:20px;display:block;flex-shrink:0}button{border:0;background:none}button:hover{filter:brightness(.97)}.app{display:grid;grid-template-columns:276px minmax(360px,1fr) 270px;max-width:1640px;margin:auto;height:100dvh;min-height:520px;background:#fff}.sidebar{background:#fbfcfe;border-right:1px solid var(--line);padding:34px 20px 18px;display:flex;flex-direction:column}.brand{display:flex;gap:12px;align-items:center;padding:0 10px 31px;font-size:24px;font-weight:700;letter-spacing:2px}.brand-icon{width:42px;height:42px;background:var(--blue);color:white;border-radius:13px 13px 13px 3px;display:grid;place-items:center;font-size:24px}.brand-caption{font-size:12px;letter-spacing:1px;color:var(--muted);display:block;margin-top:5px;font-weight:400}.primary{display:flex;align-items:center;justify-content:center;gap:8px;background:var(--blue);color:#fff;border-radius:12px;min-height:48px;padding:12px 20px;font-size:15px;font-weight:600}.create-btn{width:100%;box-shadow:0 5px 10px #345ef514}.section-label{display:flex;justify-content:space-between;color:#8b91a1;font-size:12px;padding:29px 10px 14px;letter-spacing:1px}.room-item{width:100%;display:flex;text-align:left;gap:11px;border-radius:12px;padding:16px 12px;margin-bottom:6px;align-items:center}.room-item.active{background:#edf1ff}.room-item.active .room-icon{background:#fff;color:var(--blue)}.room-icon{display:grid;place-items:center;background:#eff2f7;color:#8b96b0;width:39px;height:39px;border-radius:11px;flex-shrink:0}.room-copy{min-width:0;flex:1}.room-copy strong{display:block;font-size:14px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.room-copy small{font-size:12px;color:#9299aa;display:block;margin-top:7px}.room-item.active strong{color:#2d4ebe}.room-item>svg{width:15px;color:#a4acbf}.join-room{display:flex;align-items:center;gap:8px;font-size:13px;color:#6b7691;padding:19px 10px;text-align:left}.join-room>svg:last-child{width:14px;margin-left:auto}.sidebar-bottom{margin-top:auto;padding-top:24px}.identity{display:flex;gap:10px;align-items:center;padding:17px 9px;border-top:1px solid var(--line)}.avatar{display:grid;place-items:center;width:34px;height:34px;flex-shrink:0;border-radius:11px;background:#e8eef9;font-size:12px;font-weight:600;color:#6380b0}.avatar.self{background:#e6ecff;color:var(--blue)}.avatar.orange{background:#fff0dd;color:#bf894b}.identity strong{font-size:13px;font-weight:600}.identity small{display:block;color:#989fac;font-size:12px;margin-top:5px}.admin-link{width:100%;display:flex;gap:10px;align-items:center;padding:13px 10px;font-size:13px;color:#747e94}.demo-label{font-size:12px;background:#eef0f5;padding:3px 7px;border-radius:5px;margin-left:auto}.prototype-note{font-size:12px;color:#9ba1ad;line-height:1.7;padding:12px 10px 0}.workspace{display:flex;min-width:0;flex-direction:column;background:#f7f8fc;position:relative;min-height:0}.chat-header{height:97px;flex-shrink:0;background:#fff;display:flex;align-items:center;padding:0 32px;gap:14px;border-bottom:1px solid var(--line)}.room-symbol{background:#edf1ff;color:var(--blue);display:grid;place-items:center;width:42px;height:42px;border-radius:13px}.header-title{flex:1;min-width:0}.header-title h1{font-size:18px;font-weight:650;letter-spacing:.3px;margin:0 0 8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.header-title>div{font-size:12px;color:#8c94a4;display:flex;align-items:center;gap:6px}.online-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:#49b98c}.separator{margin:0 3px;color:#c6ccd7}.share-button{display:flex;align-items:center;gap:7px;font-size:13px;border:1px solid var(--line);border-radius:9px;padding:10px 12px;background:#fff}.share-button svg{width:16px;height:16px}.icon-button{min-width:40px;height:40px;display:grid;place-items:center;color:#7c879e;border-radius:10px}.messages{flex:1;overflow:auto;padding:28px 32px 22px;scroll-behavior:smooth;overscroll-behavior:contain}.date-line{display:flex;justify-content:center;align-items:center;gap:12px;color:#9ba3b3;font-size:12px;margin:0 0 28px}.date-line:before,.date-line:after{content:'';width:30px;height:1px;background:#e0e5ee}.message{display:flex;gap:10px;margin-bottom:24px;align-items:flex-start}.message.mine{flex-direction:row-reverse}.message-body{max-width:79%;min-width:0}.message-meta{font-size:12px;color:#8b94a7;margin:0 0 8px;display:flex;gap:10px;align-items:center}.message-meta time{color:#a4acbc;font-size:12px}.mine .message-meta{justify-content:flex-end}.bubble{border:1px solid #edf0f6;background:#fff;border-radius:0 14px 14px 14px;padding:12px 16px;font-size:15px;line-height:1.8;box-shadow:0 2px 3px #26345202;overflow-wrap:anywhere;white-space:pre-wrap}.bubble a{color:#315ded}.mine .bubble{background:var(--blue);color:#fff;border:0;border-radius:14px 0 14px 14px}.mine .bubble a{color:#fff}.image-bubble{padding:5px;overflow:hidden;line-height:0;max-width:296px;display:block}.image-bubble img{display:block;width:100%;border-radius:9px;max-height:270px;object-fit:cover}.image-caption{line-height:1.7;white-space:normal;font-size:14px;padding:10px 10px 7px}.sent-note{font-size:12px;color:#9ba4b7;text-align:right;margin-top:6px}.system-note{text-align:center;font-size:12px;color:#969fb0;padding:5px 0 24px;line-height:1.8}.composer-area{padding:15px 30px 19px;background:#f7f8fc}.composer{background:white;border:1px solid #e3e8f1;border-radius:16px;display:flex;align-items:flex-end;padding:9px;gap:6px;box-shadow:0 4px 12px #23385b03}.composer textarea{resize:none;border:0;background:none;outline:none;flex:1;min-width:0;height:42px;max-height:132px;line-height:1.6;padding:9px 5px;font-size:15px;color:var(--ink)}.composer textarea::placeholder{color:#a7afbf}.image-button,.send-button{height:42px;width:42px;display:grid;place-items:center;flex-shrink:0;border-radius:10px}.image-button{color:#929db1}.send-button{background:var(--blue);color:#fff}.composer-caption{display:flex;justify-content:space-between;color:#99a3b5;font-size:12px;padding:12px 2px 0;gap:8px}.composer-caption>span{display:flex;gap:5px;align-items:center}.tiny-lock svg{width:13px;height:13px}.context-panel{padding:48px 30px 28px;border-left:1px solid var(--line);display:flex;flex-direction:column}.eyebrow{font-size:11px;letter-spacing:2px;color:#94a0ba}.context-top h2{font-size:26px;line-height:1.6;letter-spacing:1px;font-weight:500;margin:18px 0 14px}.context-top p{font-size:14px;color:#929aae;line-height:1.9;margin:0}.context-rule{height:1px;background:var(--line);margin:28px 0}.info-line{display:flex;gap:12px;margin-bottom:25px;align-items:flex-start;font-size:14px;color:#657088}.info-line>svg{width:18px;height:18px;color:#8a9abc}.info-line small{display:block;font-size:12px;color:#a0a8b7;margin-top:7px}.context-foot{margin-top:auto;padding-top:36px;font-size:12px;color:#a1a9b8;line-height:1.8}.context-foot span{display:block;font-size:10px;letter-spacing:2px;margin-top:7px}.mobile-only,.mobile-ribbon{display:none!important}dialog{border:0;border-radius:22px;width:min(480px,calc(100% - 32px));padding:0;color:var(--ink);box-shadow:0 20px 90px #16264726;max-height:88dvh}dialog::backdrop{background:#1e294751;backdrop-filter:blur(4px)}.modal-head{display:flex;align-items:center;justify-content:space-between;padding:22px 24px 10px}.modal-head h2{font-size:20px;margin:0;font-weight:600}.modal-body{padding:12px 24px 26px}.modal-body>p{color:#8993a7;font-size:14px;line-height:1.8;margin:0 0 22px}.form-label{display:block;font-size:14px;font-weight:500;margin:20px 0 9px}.field{width:100%;border:1px solid #dfe5f0;border-radius:11px;background:#fff;padding:14px;color:var(--ink);font-size:16px;outline:none}.field:focus{border-color:#7c99ff}.mode-options{display:grid;grid-template-columns:1fr 1fr;gap:12px}.mode-option{border:1px solid var(--line);border-radius:12px;padding:15px;text-align:left;display:flex;flex-direction:column;gap:8px;font-size:14px}.mode-option.selected{background:#f0f3ff;border-color:#6788ff;color:var(--blue)}.mode-option small{font-size:12px;color:#909bb0}.full{width:100%;margin-top:24px}.secondary{min-height:44px;border:1px solid #dfe5f0;border-radius:10px;padding:10px 15px;color:#61708c;background:#fff}.muted-note{font-size:12px;color:#99a3b6;line-height:1.8;margin-top:14px}.error{font-size:13px;color:#c65353;margin-top:10px;min-height:18px}.lock-hero{width:62px;height:62px;border-radius:19px;background:#edf1ff;display:grid;place-items:center;color:var(--blue);margin:4px 0 22px}.lock-hero svg{width:26px;height:26px}.detail-row{display:flex;justify-content:space-between;gap:20px;padding:15px 0;border-bottom:1px solid var(--line);font-size:14px}.detail-row span{color:#8d97a9}.modal-actions{display:flex;gap:10px;margin-top:24px}.modal-actions>*{flex:1}.badge{font-size:12px;color:#8190ad;background:#f0f3f9;padding:4px 8px;border-radius:5px}.badge.restored{background:#edf5ff;color:var(--blue)}.gallery{width:min(900px,calc(100% - 32px))}.gallery img{width:100%;display:block}.gallery .modal-body{padding:8px 20px 20px}.empty-state{text-align:center;margin:80px auto;color:#a0aabd;font-size:14px;line-height:2}.empty-state svg{width:38px;height:38px;margin:auto auto 16px;color:#a7b7e1}.empty-state strong{display:block;color:#667797;font-size:17px;font-weight:500;margin-bottom:8px}.toast-show{opacity:1!important;transform:translate(-50%,0)!important}#toast{position:fixed;left:50%;bottom:115px;transform:translate(-50%,12px);opacity:0;background:#24304c;color:white;padding:13px 21px;border-radius:12px;font-size:14px;z-index:10;transition:.2s;pointer-events:none;max-width:90vw;width:max-content}#attachmentPreview{position:relative;width:86px;margin:0 0 12px}#attachmentPreview img{width:86px;height:70px;object-fit:cover;border-radius:10px;border:2px solid white}#attachmentPreview button{position:absolute;right:-8px;top:-8px;border-radius:50%;background:#354667;color:white;width:24px;height:24px;display:grid;place-items:center}#attachmentPreview svg{width:14px}.access-pill{font-size:12px;border-radius:6px;padding:4px 8px;background:#f1f4fc;color:#7b8dac}.dangerless{color:#536ef0}a{color:var(--blue)}
@media(min-width:1600px){.app{border-left:1px solid var(--line);border-right:1px solid var(--line)}}@media(max-width:1199px){.app{grid-template-columns:252px minmax(360px,1fr)}.context-panel{display:none}.sidebar{padding-left:16px;padding-right:16px}}@media(max-width:700px){.app{display:flex;min-height:0;height:100dvh}.sidebar{display:none;position:fixed;inset:0;z-index:4;border:0;padding:calc(24px + env(safe-area-inset-top)) 22px calc(18px + env(safe-area-inset-bottom));background:#fbfcfe;overflow:auto}.sidebar.open{display:flex}.brand{padding-bottom:29px}.brand .icon-button{margin-left:auto}.brand-caption{font-size:12px}.section-label{font-size:12px}.room-item{padding:19px 14px}.room-copy strong{font-size:16px}.room-copy small{font-size:13px}.room-icon{width:43px;height:43px}.join-room{font-size:14px;padding-top:23px}.identity strong{font-size:14px}.admin-link{font-size:14px}.workspace{width:100%;height:100%;min-height:0}.mobile-only{display:flex!important}.mobile-ribbon{display:flex!important;justify-content:space-between;align-items:center;padding:8px 20px 7px;padding-top:calc(8px + env(safe-area-inset-top));background:white;font-size:12px;letter-spacing:2px;color:#617bd0;border-bottom:1px solid #f2f4f8;flex-shrink:0}.mobile-ribbon span{font-size:10px;letter-spacing:.5px;color:#a0a9ba}.chat-header{height:76px;padding:0 13px;gap:7px}.room-symbol{display:none}.chat-header .icon-button{min-width:36px;width:36px}.header-title h1{font-size:17px;margin-bottom:7px}.header-title>div{font-size:12px}.share-button{border:0;padding:10px}.share-button svg{width:21px;height:21px}.share-button>span:not(:first-child){display:none}.messages{padding:25px 17px 16px}.message{gap:8px;margin-bottom:23px}.message-body{max-width:calc(100% - 54px)}.avatar{width:30px;height:30px;border-radius:9px;font-size:11px}.bubble{font-size:15px;padding:11px 14px;line-height:1.8}.image-bubble{padding:4px;max-width:249px}.message-meta{font-size:12px;margin-bottom:7px;gap:8px}.image-caption{font-size:13px}.composer-area{padding:10px 13px calc(10px + env(safe-area-inset-bottom));border-top:1px solid #eaeef6;background:#fff}.composer{background:#f7f8fc;border-radius:14px;padding:6px;gap:2px;border-color:#e9edf4;box-shadow:none}.composer textarea{font-size:16px;padding-left:3px;height:42px}.composer textarea::placeholder{font-size:14px}.image-button{width:36px}.send-button{width:40px;height:40px;border-radius:11px}.composer-caption{font-size:11px;padding:9px 4px 0}.desktop-only{display:none!important}.date-line{margin-bottom:25px}.modal-head{padding:20px 22px 8px}.modal-body{padding:12px 22px 24px}dialog{border-radius:23px 23px 0 0;width:100%;max-width:100%;margin:auto 0 0;max-height:92dvh;padding-bottom:env(safe-area-inset-bottom)}.gallery{width:100%;border-radius:18px;margin:auto;max-width:100%}.gallery .modal-body{padding:10px}.modal-body>p{font-size:14px}.prototype-note{font-size:12px}.sidebar-bottom .avatar{width:36px;height:36px}.context-panel{display:none}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
[hidden]{display:none!important}.identity-button{text-align:left;width:100%;cursor:pointer}.identity-button>span{margin-left:auto;color:#a1adc4}.identity-button>span svg{width:15px}.admin-link{text-decoration:none}.retention-notice{display:flex;align-items:center;justify-content:center;gap:8px;background:#f0f3fa;color:#7b8ba7;font-size:12px;padding:11px 12px}.retention-notice svg{width:14px;height:14px}.retention-notice button{display:flex;padding:0;color:#99a5bb}.composer-caption button{padding:0;color:#6b80ac;font-size:12px;text-align:left}.identity-number{margin-left:5px;color:#9da8be;font-size:12px}.message-meta{flex-wrap:wrap;row-gap:4px}.avatar{overflow:hidden;text-overflow:ellipsis;max-width:34px}.my-identity-card{text-align:left;border:1px solid #e3eafb;background:#f3f6ff;border-radius:15px;padding:20px;margin-top:14px}.my-identity-card>span{color:#8c9bb8;font-size:12px}.my-identity-card strong{display:block;font-size:22px;font-weight:500;color:#4c6298;margin:15px 0 9px;overflow-wrap:anywhere}.my-identity-card div{font-size:14px;color:#7d90b8;letter-spacing:1px}.my-identity-card small{display:flex;align-items:center;font-size:12px;color:#6884c4;margin-top:20px;gap:6px}.my-identity-card small svg{width:13px;height:13px}.entry-room{display:flex;align-items:center;gap:12px;background:#f5f7fc;border-radius:13px;padding:17px;margin-bottom:22px}.entry-room strong{font-size:16px}.entry-room small{display:block;font-size:13px;color:#8a97ae;margin-top:7px}.optional{font-size:12px;color:#97a2b7;font-weight:400;margin-left:5px}.identity-display{border-radius:15px;padding:24px;text-align:center;background:#f1f4ff;color:#7386b5;margin:6px 0 25px}.identity-display>span{font-size:13px}.identity-display strong{display:block;font-size:42px;font-weight:550;letter-spacing:2px;color:#4465cb;margin:12px 0;overflow-wrap:anywhere}.identity-display small{font-size:12px}.nickname-field{display:flex;gap:9px}.nickname-field input{flex:1;min-width:0}.nickname-field button{flex-shrink:0}.text-button{color:#7083af;padding:10px;font-size:14px}.admin-app{min-height:100dvh;background:#f6f8fc}.admin-header{height:83px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;padding:0 max(32px,calc((100vw - 1260px)/2));background:white;gap:12px}.admin-brand{display:flex;align-items:center;gap:14px;text-decoration:none;color:var(--ink)}.admin-brand .brand-icon{font-size:22px;width:37px;height:37px;border-radius:11px 11px 11px 3px}.admin-brand strong{font-size:18px;font-weight:600}.admin-header-actions{display:flex;align-items:center;gap:12px}.admin-header-actions a{text-decoration:none;font-size:13px;min-height:38px;padding:9px 14px}.admin-intro{max-width:1260px;margin:0 auto;padding:35px 0 27px;display:flex;align-items:center;justify-content:space-between}.admin-intro h1{margin:12px 0 10px;font-size:28px;font-weight:550}.admin-intro p{font-size:14px;color:#919bb0;margin:0}.admin-stat{text-align:right;display:flex;align-items:baseline;gap:12px}.admin-stat strong{font-size:36px;font-weight:500;color:#4c6dcc}.admin-stat span{font-size:14px;color:#8c99b1}.admin-demo-strip{max-width:1260px;margin:0 auto 18px;color:#8592aa;font-size:12px;padding:12px 16px;background:#ebf0fb;border-radius:9px}.admin-layout{max-width:1260px;margin:0 auto;display:grid;grid-template-columns:340px minmax(0,1fr);border:1px solid #e1e7f1;border-radius:17px;overflow:hidden;min-height:500px;height:calc(100dvh - 318px);background:#fff}.admin-room-list{background:#fbfcfe;padding:20px 16px;overflow:auto;border-right:1px solid var(--line)}.search-label{font-size:12px;color:#8292b0;display:block;margin:0 0 9px 2px}.admin-room-list input{font-size:14px;padding:12px;margin-bottom:20px}.admin-room-row{display:block;text-decoration:none;color:var(--ink);padding:18px 14px;border:1px solid transparent;border-bottom-color:var(--line);border-radius:12px;margin-bottom:5px}.admin-room-row.selected{background:#edf2ff;border-color:#e3eaff}.admin-room-row .top{display:flex;align-items:center;justify-content:space-between;gap:8px}.admin-room-row strong{font-size:15px;font-weight:550}.admin-room-row small{font-size:12px;color:#9ba6ba}.admin-row-meta{font-size:12px;color:#7f8fae;margin:12px 0 8px}.admin-detail{display:flex;flex-direction:column;min-height:0;min-width:0;background:#f7f9fd}.admin-detail-header{display:flex;align-items:center;gap:12px;padding:23px 26px;background:#fff;border-bottom:1px solid var(--line)}.admin-detail-header>div{flex:1}.admin-detail-header h2{font-size:18px;font-weight:550;margin:0 0 9px;overflow-wrap:anywhere}.admin-detail-header span{font-size:12px;color:#8d9bb2}.admin-room-meta{display:flex;gap:18px;font-size:12px;color:#8d9bb2;padding:14px 26px;border-bottom:1px solid var(--line);flex-wrap:wrap}.admin-messages{padding:25px 26px;flex:1;overflow:auto;min-height:0}.admin-delete-bar{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:16px 26px;background:#fff;border-top:1px solid var(--line)}.admin-delete-bar>span{font-size:12px;color:#a2aaba}.danger-button{color:#c6535d;background:#fff1f2;border:1px solid #f3d7dc;border-radius:10px;min-height:43px;padding:11px 15px;font-size:14px;flex-shrink:0}.delete-warning{font-size:14px;line-height:1.8;background:#fff4f4;color:#ad6570;border-radius:12px;padding:16px;margin:4px 0 15px}.admin-login{max-width:1100px;margin:0 auto;padding:35px 24px}.back-to-chat{display:flex;gap:8px;align-items:center;text-decoration:none;font-size:14px;color:#7c8ba8}.back-to-chat svg{height:18px;width:18px}.admin-login-card{width:440px;max-width:100%;padding:34px;background:#fff;border:1px solid var(--line);border-radius:23px;margin:65px auto 0;box-shadow:0 15px 50px #29426d06}.admin-login-card .brand{padding:0 0 30px;font-size:20px;letter-spacing:0}.admin-login-card h1{font-size:26px;font-weight:550;margin:0 0 11px}.admin-login-card>p{font-size:14px;color:#8f9bb1;line-height:1.8;margin:0 0 22px}.demo-callout{font-size:12px;line-height:1.9;color:#8d9bb4;background:#f5f7fb;border-radius:10px;padding:14px;margin-top:20px}.admin-login .form-label{font-size:14px}.admin-login .error:empty{min-height:0}
@media(max-width:1350px){.admin-intro,.admin-layout,.admin-demo-strip{margin-left:30px;margin-right:30px}}
@media(max-width:700px){.composer-caption button{font-size:12px;max-width:200px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.identity-button>div:nth-child(2){flex:1}.retention-notice{font-size:12px;padding:10px}.message-meta{font-size:12px}.identity-number{font-size:11px;margin-left:3px}.admin-header{height:73px;padding:0 17px}.admin-brand{gap:9px}.admin-brand strong{font-size:16px}.admin-brand .brand-icon{width:32px;height:32px;font-size:19px}.admin-header .demo-label{display:none}.admin-header-actions{gap:3px}.admin-header-actions a{font-size:12px;padding:8px}.admin-header-actions button{font-size:12px}.admin-intro{margin:0;padding:27px 20px 23px}.admin-intro h1{font-size:24px}.admin-intro .eyebrow{font-size:10px}.admin-intro p{font-size:13px}.admin-stat{gap:7px}.admin-stat strong{font-size:29px}.admin-stat span{font-size:12px}.admin-demo-strip{margin:0 16px 16px;padding:11px 13px;line-height:1.7;font-size:11px}.admin-layout{display:block;margin:0 16px 20px;height:auto;min-height:390px;border-radius:15px}.admin-room-list{border:0;padding:18px 14px}.admin-room-list input{font-size:16px}.admin-room-row{padding:19px 12px}.admin-room-row strong{font-size:16px}.admin-layout:not(.has-selection) .admin-detail{display:none}.admin-layout.has-selection{position:fixed;inset:73px 0 0;margin:0;z-index:2;border:0;border-radius:0;min-height:0;background:#f7f9fd}.admin-layout.has-selection .admin-room-list{display:none}.admin-layout.has-selection .admin-detail{height:100%}.admin-detail-header{padding:20px 14px;gap:7px}.admin-detail-header h2{font-size:17px}.admin-detail-header a{text-decoration:none;align-items:center;justify-content:center}.admin-room-meta{padding:13px 20px;gap:15px}.admin-messages{padding:23px 17px}.admin-delete-bar{padding:14px 18px calc(14px + env(safe-area-inset-bottom));gap:8px;align-items:center}.admin-delete-bar>span{font-size:11px;max-width:155px;line-height:1.8}.admin-delete-bar button{font-size:13px;padding:11px 13px}.admin-login{padding:24px 18px}.admin-login-card{margin:34px auto 0;padding:25px 22px}.admin-login-card .brand-caption{font-size:11px}.admin-app .message-body{max-width:calc(100% - 42px)}}

.retention-fieldset{border:0;padding:0;margin:20px 0 0;min-width:0}.retention-fieldset legend{margin:0 0 10px;padding:0}.retention-options{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}.retention-options label{cursor:pointer;position:relative}.retention-options input{position:absolute;opacity:0;width:1px;height:1px}.retention-options span{display:flex;align-items:center;justify-content:center;min-height:46px;border:1px solid #e0e6f1;border-radius:10px;font-size:14px;color:#7a88a4;background:#fff}.retention-options input:checked+span{background:#edf2ff;color:#345ef5;border-color:#6788ff;font-weight:600}.retention-options input:focus-visible+span{outline:3px solid #9baeff;outline-offset:2px}.retention-fieldset p{margin:10px 0 0;line-height:1.7}.retention-fieldset+.primary{margin-top:20px}
.empty-actions{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap;margin:26px 16px}.load-more{display:block;font-size:13px;color:#7d8eb1;margin:0 auto 22px;padding:10px 20px;border-radius:10px;border:1px solid #e5eaf5;background:white}.new-messages{position:absolute;right:25px;bottom:150px;z-index:2;border:1px solid #d9e4ff;box-shadow:0 4px 18px #19335918;background:white;color:#4c70cd;border-radius:20px;padding:10px 16px;font-size:13px}.image-source-options{display:grid;gap:10px}.image-source{display:flex;align-items:center;gap:14px;min-height:78px;padding:15px;border:1px solid #e2e8f3;border-radius:14px;text-align:left}.image-source>svg{color:#6888ed;width:24px;height:24px}.image-source>span{flex:1}.image-source strong{display:block;font-size:16px;font-weight:550}.image-source small{display:block;font-size:12px;color:#99a5b8;margin-top:7px}.image-source>svg:last-child{width:16px;color:#a4b1c8}.upload-state{display:block;min-width:100px;font-size:12px;color:#778ab4;padding:6px 0}#attachmentPreview{margin-bottom:5px}.admin-layout{height:calc(100dvh - 266px);margin-bottom:24px}.messages{overflow-anchor:none}.context-panel .info-line small{line-height:1.7}.header-title>div{flex-wrap:wrap}.admin-login-card{box-shadow:0 15px 50px #29426d06}@media(max-width:700px){.admin-layout{height:auto}.admin-layout.has-selection{height:auto}.empty-actions{flex-direction:column}.empty-actions button{width:220px}.header-title>div{font-size:10px}.composer-caption button{max-width:180px}.new-messages{bottom:135px;right:15px}.sidebar{max-height:100dvh}.sidebar .brand-caption{letter-spacing:.5px}}
.composer textarea{line-height:24px;padding-top:8px;padding-bottom:8px}

.recent-room{position:relative}.recent-room .room-item{padding-right:48px}.recent-remove{position:absolute;right:3px;top:50%;transform:translateY(-50%);width:44px;height:44px;display:flex;align-items:center;justify-content:center;color:#929eb5;border-radius:10px}.recent-remove svg{width:16px;height:16px}.recent-remove:hover,.recent-remove:focus-visible{background:#e7edf8;color:#536784}

@media(max-width:700px){.admin-header{padding:0 10px;gap:5px}.admin-header-actions{gap:0}.admin-header-actions .text-button{padding:10px 6px}.admin-brand strong{font-size:14px}.admin-brand{gap:5px}.admin-brand .brand-icon{width:26px;height:26px;font-size:17px}}

/* Anchor mobile chat to the visible viewport, including Safari keyboard panning. */
@media(max-width:700px){
 html.mobile-chat,html.mobile-chat body{height:100%;overflow:hidden;overscroll-behavior:none}
 html.mobile-chat #chatApp{position:fixed;top:0;left:0;width:100%;height:var(--chat-height,100dvh);min-height:0;transform:translateY(var(--chat-top,0px));overflow:hidden}
 html.mobile-chat .workspace{height:100%;min-height:0;overflow:hidden}
 html.mobile-chat .messages{flex:1 1 0;min-height:0;overflow-y:auto}
 html.mobile-chat .composer-area,html.mobile-chat .retention-notice,html.mobile-chat .mobile-ribbon{flex-shrink:0}
 html.mobile-chat .sidebar{height:100%;max-height:100%}
}
/* Text expands naturally; the visible keyboard area limits its maximum height. */
.composer textarea{max-height:240px;overflow-y:hidden;white-space:pre-wrap;overflow-wrap:anywhere}
.composer.long-text{align-items:flex-end;border-radius:16px}
.photo-card{padding:7px!important;overflow:hidden;max-width:330px}
.photo-text{padding:6px 7px 12px;white-space:pre-wrap;overflow-wrap:anywhere}
.photo-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:4px;width:280px;max-width:100%}
.photo-grid.single{grid-template-columns:1fr}
.photo-grid button{padding:0;overflow:hidden;border-radius:8px;aspect-ratio:1;background:#edf0f7;min-width:0}
.photo-grid img{display:block;width:100%;height:100%;object-fit:cover}
.photo-grid.single button{aspect-ratio:auto}.photo-grid.single img{height:auto;max-height:320px;object-fit:contain}
.photo-count{font-size:11px;opacity:.7;padding:7px 3px 1px}
.gallery-stage{display:flex;align-items:center;justify-content:center;min-height:150px}
.gallery-stage img{max-width:100%;max-height:65dvh;object-fit:contain;touch-action:pan-y pinch-zoom}
.gallery-nav{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:14px 0;color:#8490a8;font-size:13px}
.gallery-nav button:disabled{opacity:.35}
#attachmentPreview{display:block;position:relative;padding:0 0 9px;max-height:120px;overflow:auto}
#attachmentPreview[hidden]{display:none}
.attachment-list{display:flex;gap:8px;overflow-x:auto;padding:5px 3px 8px}
.attachment-list>div{position:relative;flex:0 0 64px}
#attachmentPreview .attachment-list img{width:64px;height:64px;object-fit:cover;border-radius:9px;display:block}
#attachmentPreview .attachment-list button{position:absolute;right:-3px;top:-3px;width:24px;height:24px;border-radius:50%;background:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 1px 5px #0002}
#attachmentPreview .attachment-list button svg{width:14px;height:14px}
#attachmentPreview .upload-state{position:static;font-size:12px;color:#7b8ba7}
@media(max-width:700px){.photo-grid{width:240px}.photo-card{max-width:100%}#attachmentPreview{max-height:105px}.gallery-stage img{max-height:58dvh}}
#attachmentPreview{width:100%}
#attachmentPreview .attachment-list button{color:#536784}
#attachmentPreview{overflow-y:hidden}
#attachmentPreview #cancelPhotoUpload{position:static;width:auto;height:auto;border-radius:6px;background:transparent;color:#7b8ba7;display:inline-block;padding:3px 10px;margin-left:8px;font-size:12px}
#attachmentPreview #cancelPhotoUpload[hidden]{display:none}
.photo-grid.pair{grid-template-columns:repeat(2,minmax(0,1fr))}
@media(max-width:700px){.compact-chat .mobile-ribbon,.compact-chat .retention-notice{display:none}.compact-chat #attachmentPreview .attachment-list img{height:48px;width:48px}.compact-chat .attachment-list>div{flex-basis:48px}.compact-chat #attachmentPreview{max-height:85px}}
/* An image-first lightbox with controls placed over the picture. */
dialog.gallery{width:fit-content;max-width:calc(100vw - 16px);max-height:calc(100dvh - 16px);padding:0;border:0;border-radius:10px;background:#14171e;overflow:hidden;box-shadow:0 16px 70px #0006}
dialog.gallery::backdrop{background:rgba(9,12,20,.88)}
.gallery .modal-body{padding:0;margin:0}
.gallery .modal-head{position:absolute;inset:0 0 auto;z-index:3;padding:0;border:0;height:0}
.gallery .modal-head h2{display:none}
.gallery .gallery-stage{position:relative;min-height:100px;min-width:150px;padding:0;line-height:0}
.gallery .gallery-stage img{display:block;width:auto;height:auto;max-width:calc(100vw - 16px);max-height:calc(100dvh - 16px);object-fit:contain}
.gallery .gallery-control,.gallery #closeModal{position:absolute;z-index:4;display:flex;align-items:center;justify-content:center;width:42px;height:42px;min-width:42px;padding:9px;border:1px solid #ffffff26;border-radius:50%;background:#12162099;color:#fff;backdrop-filter:blur(8px);box-shadow:0 1px 8px #0002;cursor:pointer}
.gallery .gallery-control svg{width:22px;height:22px}
.gallery .gallery-prev{left:8px;top:50%;transform:translateY(-50%)}
.gallery .gallery-next{right:8px;top:50%;transform:translateY(-50%)}
.gallery .gallery-save{left:8px;top:8px}
.gallery #closeModal{right:8px;top:8px}
.gallery .gallery-control:disabled{opacity:0;pointer-events:none}
.gallery .gallery-counter{position:absolute;bottom:9px;left:50%;transform:translateX(-50%);background:#12162099;color:#fff;border-radius:20px;padding:7px 12px;font-size:12px;line-height:1;pointer-events:none}
.gallery .gallery-control:hover,.gallery #closeModal:hover{background:#121620dd}
@media(max-width:700px){dialog.gallery{border-radius:6px;max-width:calc(100vw - 8px)}.gallery .gallery-stage img{max-width:calc(100vw - 8px)}}
.client-update{position:fixed;z-index:30;left:50%;transform:translateX(-50%);top:calc(8px + env(safe-area-inset-top));width:max-content;max-width:calc(100vw - 20px);display:flex;align-items:center;gap:10px;padding:10px 14px;background:#243764;color:#fff;border-radius:12px;box-shadow:0 4px 20px #0002;font-size:12px;line-height:1.5}
.client-update button{white-space:nowrap;color:white;background:#4668ed;padding:8px 10px;border-radius:8px;font-size:12px}
#attachmentPreview #addMorePhotos{position:static;flex:0 0 64px;width:64px;height:64px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;border-radius:9px;border:1px dashed #bac7e5;background:#f3f6fc;color:#6b7ea5}
#addMorePhotos small{font-size:10px}#attachmentPreview #addMorePhotos svg{width:20px;height:20px}
@media(max-width:700px){.composer .image-button{width:32px;min-width:32px;padding:6px}.compact-chat #attachmentPreview #addMorePhotos{height:48px;flex-basis:48px;width:48px}}
.original-option{display:inline-flex;align-items:center;gap:5px;margin-left:10px;color:#6b7ea5;font-size:12px;min-height:28px}.original-option input{accent-color:#4668ed;width:15px;height:15px}.compression-hint{font-size:10px;color:#95a0b4;margin-top:2px}
#attachmentPreview{max-height:145px}.compact-chat #attachmentPreview{max-height:115px}
.attachment-tools{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;padding:18px 4px 10px}.attachment-tools[hidden]{display:none}.attachment-tools button{display:flex;flex-direction:column;align-items:center;gap:8px;background:none;border:0;color:#74809a;font-size:12px}.attachment-tools button>span{display:grid;place-items:center;width:54px;height:54px;background:#f3f5fa;border-radius:15px;border:1px solid #e9edf5}.attachment-tools svg{width:26px;height:26px}.transfer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:10px}.attachment-bubble{width:min(460px,65vw)}.transfer-card{position:relative;background:#eef1f8;border-radius:14px;overflow:hidden;color:#34405d}.transfer-open{position:relative;display:block;width:100%;height:140px;background:#e6ebf5;border:0;padding:0}.transfer-open img{width:100%;height:100%;object-fit:cover}.file-symbol{display:grid;place-items:center;height:100%;color:#6680c7}.file-symbol svg{width:52px;height:52px}.transfer-info{padding:10px;display:flex;flex-direction:column;gap:4px}.transfer-info strong{font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.transfer-info small,.transfer-status{font-size:11px;color:#77839b}.transfer-progress{position:absolute;top:48px;left:calc(50% - 23px);width:46px;height:46px;border:0;border-radius:50%;background:#172644a6;color:white;padding:0}.transfer-progress svg{position:absolute;inset:0;width:46px;height:46px;transform:rotate(-90deg);fill:none;stroke-width:2.5}.progress-track{stroke:#ffffff40}.progress-value{stroke:white;stroke-dasharray:119.4;stroke-dashoffset:119.4;transition:stroke-dashoffset .15s}.transfer-progress span{font-size:11px}.transfer-cancel{position:absolute;right:5px;top:5px;border:0;border-radius:50%;background:#ffffffd9;color:#64718d;width:24px;height:24px}.video-play{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:white;background:#18274499;border-radius:50%;padding:12px}.attachment-video,.attachment-full-image{display:block;width:100%;max-height:75dvh;object-fit:contain}#fileDraft{max-height:140px;overflow:auto;padding:4px 8px 10px}#fileDraft>div{display:flex;align-items:center;gap:10px;padding:8px;background:#f1f4fa;border-radius:10px;margin-bottom:4px}#fileDraft svg{width:24px;height:24px;color:#6078bd}#fileDraft span{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px}#fileDraft small{display:block;color:#8b96ae;font-size:10px}#fileDraft button{border:0;background:none;font-size:20px;color:#8791a6}.compact-chat .attachment-tools{padding:6px}.compact-chat .attachment-tools button>span{width:38px;height:38px}
/* Videos share the edge-to-edge media treatment of the image viewer. */
.bubble.video-bubble,.mine .bubble.video-bubble{padding:0;border:0;box-shadow:none;background:transparent;border-radius:12px;overflow:hidden;max-width:296px;width:min(296px,65vw)}
.video-bubble>.photo-text{color:var(--ink);padding:8px 0;white-space:pre-wrap}
.video-card{background:transparent;border:0;box-shadow:none}.video-card .transfer-open{height:auto;aspect-ratio:4/3;background:#14171e;opacity:1}.video-card .transfer-open img{display:block;object-fit:contain}.video-card .file-symbol{position:absolute;inset:0;color:#aab7d2}.video-card .transfer-info{position:absolute;bottom:0;left:0;right:0;padding:12px 8px 8px;background:linear-gradient(transparent,#000a);pointer-events:none}.video-card .transfer-status{color:white;text-align:center;font-size:11px}.video-card.transfer-ready .transfer-info{display:none}.video-card .transfer-progress{top:calc(50% - 23px)}
.video-gallery .gallery-stage{min-width:0;min-height:0}.video-gallery .attachment-video{display:block;width:auto;height:auto;max-width:calc(100vw - 16px);max-height:calc(100dvh - 16px);background:#000;object-fit:contain}.video-gallery .gallery-save{text-decoration:none}
@media(max-width:700px){.video-gallery .attachment-video{max-width:calc(100vw - 8px)}}
.video-card .transfer-open:has(img){aspect-ratio:auto}.video-card .transfer-open img{height:auto;max-height:360px;object-fit:cover}
/* Compact document rows keep names readable without a thumbnail-sized panel. */
.bubble.file-bubble,.mine .bubble.file-bubble{padding:0;border:0;box-shadow:none;background:transparent;width:min(260px,65vw);max-width:100%;border-radius:12px}.file-bubble>.photo-text{color:var(--ink);padding:8px 0}.transfer-grid.with-files{grid-template-columns:minmax(0,1fr);gap:8px}
.file-card{min-height:72px;border:1px solid #e5eaf3;background:#fff;border-radius:12px}.file-card .transfer-open{position:absolute;inset:0;width:100%;height:100%;display:flex;align-items:center;padding:10px 12px;background:transparent;opacity:1;text-align:left}.compact-file-icon{position:relative;display:grid;place-items:center;width:40px;height:44px;flex-shrink:0;border-radius:8px;background:#eef1f6;color:#8491a8}.compact-file-icon svg{width:28px;height:32px;opacity:.5}.compact-file-icon b{position:absolute;bottom:5px;font-size:9px;font-weight:750;line-height:12px;background:inherit;padding:0 3px}.file-type-pdf{background:#fff0ee;color:#db625a}.file-type-word{background:#eaf1ff;color:#4e7ccc}.file-type-sheet{background:#e8f5ee;color:#439a73}.file-type-slides{background:#fff2e8;color:#d68b4e}.file-type-archive{background:#f1ebfb;color:#9270bd}
.file-card .transfer-info{position:relative;margin-left:64px;padding:10px 10px 10px 0;gap:2px;min-height:70px;justify-content:center;pointer-events:none}.file-card .transfer-info strong{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;white-space:normal;overflow:hidden;overflow-wrap:anywhere;line-height:16px;font-size:12px;font-weight:550}.file-card .transfer-info small,.file-card .transfer-status{font-size:10px;line-height:13px}.file-card.transfer-ready .transfer-status:empty{display:none}.file-card .transfer-progress{left:9px;top:calc(50% - 23px)}.file-card:has(.transfer-cancel) .transfer-info{padding-right:28px}.file-card .transfer-cancel{right:3px;top:3px;width:22px;height:22px;font-size:18px}

.unread-badge{background:#fa5b66;color:white;border-radius:12px;min-width:20px;padding:2px 6px;font-size:11px;text-align:center;margin-left:8px;flex-shrink:0}.unread-badge[hidden]{display:none}.receipt-button{border:0;background:none;color:#738bb5;font:inherit;padding:4px 0;cursor:pointer}.reader-row{display:flex;gap:12px;align-items:center;padding:10px 0}.reader-row .avatar{flex-shrink:0}

.room-presence,.recent-presence{display:flex;align-items:center;gap:5px;font-size:12px;color:#8591ab}.room-presence{border:0;background:none;padding:3px 0;cursor:pointer;white-space:nowrap}.room-presence[hidden]{display:none}.room-presence svg,.recent-presence svg{width:14px;height:14px}.presence-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:#49b98c}.presence-divider{opacity:.6}.recent-presence{margin-top:4px;font-size:11px}.system-message{text-align:center;color:#939eb3;font-size:12px;padding:9px 12px;overflow-wrap:anywhere}.reader-row small{display:block;font-size:12px;color:#939eb3;margin-top:3px}

html[lang=en] .brand{letter-spacing:0;font-size:21px}html[lang=en] .room-presence{font-size:11px}html[lang=en] .recent-presence{gap:3px;font-size:10px}html[lang=en] .composer-caption{font-size:11px}html[lang=en] .admin-header-actions{flex-wrap:wrap}html[lang=en] .retention-notice{font-size:11px}html[lang=en] .context-top h2{font-size:25px}html[lang=en] .mode-option{font-size:13px}html[lang=en] .brand-caption{font-size:11px}@media(max-width:760px){html[lang=en] .header-title>div{font-size:10px}html[lang=en] .chat-header{gap:8px}html[lang=en] .chat-header h1{font-size:17px}}

.sidebar .brand{gap:10px}.language-switch{display:flex;align-items:center;gap:5px;margin-left:auto;flex-shrink:0;letter-spacing:0;font-size:11px;font-weight:400;color:#b5bdcc}.language-switch button{border:0;border-radius:0;background:transparent;box-shadow:none;min-height:36px;padding:6px 2px;font-size:12px;color:#8a94a9;font-weight:400;white-space:nowrap}.language-switch button[aria-pressed=true]{color:#345ef5;font-weight:650}.language-switch button:hover{color:#345ef5}.return-chat{display:none;align-items:center;gap:5px;color:#7b88a2;font-size:12px;padding:0 8px 12px;text-align:left}.return-chat svg{width:15px;height:15px}.return-chat[hidden]{display:none!important}@media(max-width:700px){.return-chat:not([hidden]){display:flex}.language-switch{gap:7px}.language-switch button{font-size:13px}}

.emoji-button{color:#929eb5;padding:8px;display:grid;place-items:center;flex-shrink:0}.emoji-button svg{width:23px;height:23px}.emoji-button[aria-expanded=true]{color:var(--blue)}.emoji-panel{margin-top:8px;border-top:1px solid var(--line);background:#fff;max-height:min(300px,42vh);overflow:auto;overscroll-behavior:contain}.emoji-panel[hidden]{display:none}.expression-tabs,.expression-categories{display:flex;align-items:center;gap:12px;padding:8px 4px;flex-wrap:wrap}.expression-tabs button,.expression-categories button{font-size:12px;color:#8b96ab;padding:6px}.expression-tabs [aria-pressed=true],.expression-categories [aria-pressed=true]{color:var(--blue);font-weight:600}.expression-close{margin-left:auto}.expression-close svg{width:18px;height:18px}.expression-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(42px,1fr));gap:4px}.expression-grid button{min-height:42px;font-size:26px;display:grid;place-items:center;padding:5px;border-radius:8px}.expression-grid button:hover{background:#f0f3fc}.expression-grid img{width:42px;height:42px;object-fit:contain}.sticker-grid{grid-template-columns:repeat(auto-fill,minmax(60px,1fr))}.sticker-grid img{width:56px;height:56px}.expression-credit{font-size:10px;color:#9da6b8;padding:8px 4px}.expression-credit a{color:inherit}.sticker-message{padding:0;background:none}.sticker-message>img{display:block;width:132px;height:132px;object-fit:contain}.admin-sticker-list{max-height:45vh;overflow:auto;margin:16px 0}.admin-sticker-row{display:flex;gap:10px;align-items:center;padding:8px 0;border-bottom:1px solid var(--line)}.admin-sticker-row>img{width:44px;height:44px;object-fit:contain}.admin-sticker-row>div{flex:1;min-width:0}.admin-sticker-row strong{font-size:13px}.admin-sticker-row small{display:block;color:#98a2b5;font-size:11px}.admin-sticker-row .text-button{font-size:12px;padding:4px}@media(max-width:700px){.emoji-button{padding:6px}.composer{gap:4px}.emoji-panel{max-height:240px}.sticker-message>img{width:112px;height:112px}}