:root{--ink:#24383d;--secondary:#607178;--muted:#607178;--border:#cedbdd;--line:#e0e8ea;--soft:#edf2f3;--surface:#f8fbfc;--paper:#f8fbfc;--white:#fff;--rail:#133d40;--accent:#087f78;--status:#607178;--table:#c7eee8;--motion:cubic-bezier(.22,.75,.2,1)}
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minmax(0,1fr);height:100dvh;min-height:700px;overflow:hidden}.rail{background:var(--rail);display:flex;align-items:center;flex-direction:column;padding-top:23px;color:var(--border)}.workspace-logo{height:39px;width:39px;background:var(--border);border-radius:12px;color:var(--ink);font-family:Georgia,serif;font-size:35px;font-weight:bold;line-height:31px;letter-spacing:-4px;box-shadow:0 2px 1px color-mix(in srgb, var(--ink) 25%, transparent);padding-right:3px}.workspace-logo span{font-size:28px;letter-spacing:0}.rail-spacer{height:35px}.rail-item{position:relative;width:56px;margin-bottom:14px;height:59px;border-radius:10px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;font-size:11px}.rail-item svg{width:23px;height:23px;stroke-width:1.7}.rail-item:hover,.rail-item.current{background:var(--secondary);color:var(--surface)}.rail-dot{height:6px;width:6px;background:var(--border);border-radius:50%;position:absolute;top:8px;right:11px;box-shadow:0 0 0 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svg{width:15px;height:15px}.search-trigger kbd{margin-left:auto;font-family:inherit;font-size:10px;color:var(--secondary)}.quick-nav{padding:18px 0 12px}.quick-nav button{height:34px;display:flex;align-items:center;gap:10px;padding:0 10px;width:100%;text-align:left;color:var(--secondary);border-radius:6px}.quick-nav button:hover,.dm:hover,.channel:hover{background:var(--soft)}.quick-nav svg{width:17px;height:17px}.at-icon{font-size:18px;width:17px;text-align:center;line-height:1}.nav-count{margin-left:auto;border-radius:5px;font-size:11px;background:var(--border);min-width:21px;text-align:center;color:var(--secondary);font-weight:500}.nav-count.light{background:var(--soft)}.side-group{margin-top:11px}.group-title{height:32px;display:flex;align-items:center;justify-content:space-between;padding:0 8px;color:var(--secondary);font-size:12px}.group-title>span{display:flex;align-items:center;gap:5px}.group-title>span svg{width:12px;height:12px}.tiny-btn{width:24px;height:24px;border-radius:5px;display:grid;place-items:center;color:var(--secondary)}.tiny-btn:hover{background:var(--soft)}.tiny-btn svg{width:15px;height:15px}.channel{width:100%;padding:0 12px;display:flex;align-items:center;height:35px;border-radius:7px;gap:10px;text-align:left;color:var(--secondary)}.channel.selected{background:var(--soft);color:var(--secondary);font-weight:600}.hash{font-size:21px;line-height:1;color:var(--secondary);font-weight:400;width:16px;text-align:center}.selected .hash{color:var(--secondary)}.channel 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4px;scroll-behavior:smooth}.day-divider{height:42px;display:flex;align-items:center;gap:15px;color:var(--secondary);font-size:11px}.day-divider:before,.day-divider:after{content:"";height:1px;background:var(--soft);flex:1}.day-divider span{white-space:nowrap;padding:0 2px}.message{position:relative;display:flex;gap:12px;margin:0 -10px;padding:8px 10px;border-radius:8px;transition:background .15s}.message:hover{background:var(--surface)}.message.is-thread{background:var(--soft)}.message>.avatar{margin-top:1px}.message-content{flex:1;min-width:0}.message-heading{display:flex;align-items:center;gap:9px;line-height:20px;margin-bottom:2px}.message-heading strong{font-size:13px;font-weight:600;color:var(--ink)}.message-heading time{font-size:10px;color:var(--border);font-variant-numeric:tabular-nums}.role-label{font-size:9px;color:var(--secondary);background:var(--soft);border-radius:3px;padding:0 4px}.message 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strong{font-weight:500;color:var(--secondary)}.file-card{display:flex;align-items:center;gap:11px;padding:13px;background:var(--white);border:1px solid var(--soft);border-radius:8px;width:100%;text-align:left}.file-card:hover{background:var(--surface);border-color:var(--border)}.file-type{height:37px;width:32px;background:var(--soft);border-radius:5px;display:flex;align-items:center;justify-content:center;color:var(--secondary);font-size:9px;font-weight:600}.file-meta{min-width:0;flex:1}.file-meta strong{font-weight:500;font-size:11px;white-space:nowrap;display:block;color:var(--secondary)}.file-meta span{display:block;color:var(--border);font-size:9px;margin-top:2px}.file-card>svg{width:15px;height:15px;color:var(--secondary)}.reactions{display:flex;gap:6px;align-items:center;margin-top:7px}.reaction{height:24px;display:flex;align-items:center;gap:5px;border:1px solid var(--soft);border-radius:7px;padding:0 7px;background:var(--surface);font-size:11px;color:var(--secondary)}.reaction 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var(--soft);margin-bottom:4px}.mention-item{width:100%;display:flex;align-items:center;gap:10px;text-align:left;padding:8px;border-radius:5px;color:var(--secondary);font-size:12px}.mention-item:hover,.mention-item.highlight{background:var(--soft)}.mention-item .position{font-size:10px;color:var(--secondary);margin-left:auto}.attachment-draft{margin:12px 15px 0;display:flex;gap:8px;flex-wrap:wrap}.draft-file{display:flex;align-items:center;gap:9px;padding:8px 10px;border:1px solid var(--border);border-radius:7px;background:var(--surface);color:var(--secondary);max-width:260px}.draft-file>.file-type{width:29px;height:30px}.draft-file strong{font-size:11px;font-weight:500;display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:165px}.draft-file small{font-size:9px;color:var(--border);display:block}.draft-file .icon-btn{width:20px;height:20px}.draft-file svg{width:12px;height:12px}.drop-hint{position:absolute;inset:0;background:color-mix(in srgb, var(--surface) 96%, transparent);border:2px dashed var(--secondary);border-radius:9px;z-index:12;display:flex;align-items:center;justify-content:center;gap:10px;color:var(--secondary)}.drop-hint strong{font-size:14px;font-weight:500}.toast{position:fixed;bottom:28px;left:50%;transform:translate(-50%,15px);padding:9px 17px;background:var(--ink);color:var(--surface);border-radius:8px;font-size:12px;box-shadow:0 6px 20px color-mix(in srgb, var(--ink) 15%, transparent);opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:30}.toast.show{opacity:1;transform:translate(-50%,0)}.modal-shade{position:fixed;inset:0;background:color-mix(in srgb, var(--ink) 27%, transparent);z-index:40;display:flex;align-items:center;justify-content:center;backdrop-filter:blur(3px)}.modal-box{background:var(--paper);border:1px solid var(--border);border-radius:15px;padding:23px;max-width:660px;width:480px;box-shadow:0 20px 80px color-mix(in srgb, var(--ink) 27%, transparent);animation:popIn .2s}.modal-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.modal-heading h2{font-size:17px;margin:0}.modal-box p{font-size:13px;color:var(--secondary)}.modal-box input[type=search],.modal-box input[type=text]{width:100%;border:1px solid var(--border);border-radius:7px;padding:11px;background:var(--white);color:var(--secondary)}.modal-box img{width:100%;border-radius:7px;display:block}.modal-box:has(img){width:660px}.modal-list{padding-top:12px}.modal-list button{display:flex;align-items:center;gap:12px;padding:10px;width:100%;border-radius:7px;text-align:left;font-size:13px}.modal-list button:hover{background:var(--soft)}.modal-list button small{margin-left:auto;color:var(--secondary)}.modal-action{margin-top:16px;background:var(--accent);color:var(--surface);border-radius:6px;padding:8px 15px;font-size:13px}.emoji-menu{position:fixed;z-index:50;background:var(--surface);border:1px solid var(--border);box-shadow:0 5px 25px color-mix(in srgb, var(--ink) 13%, transparent);border-radius:10px;padding:8px;display:grid;grid-template-columns:repeat(5,36px);gap:3px;animation:popIn .2s}.emoji-menu button{height:35px;font-size:22px;border-radius:5px}.emoji-menu button:hover{background:var(--soft)}.new-message{animation:messageIn .25s cubic-bezier(.2,.8,.2,1)}.reaction-pop{animation:reactionPop .35s cubic-bezier(.2,.8,.2,1)}.initial-enter{animation:enter .4s ease-out}.file-list-view{padding-top:18px}.file-list-view .file-card{margin:0 0 12px;max-width:500px;padding:18px}.file-list-view h2{font-size:15px;font-weight:500;margin:0 0 18px}.empty-channel{padding:38px 10px}.empty-channel h2{font-size:21px;font-weight:500}.empty-channel p{font-size:13px;color:var(--secondary)}.thread-open .message-list .unread-divider{margin-left:-26px;margin-right:-26px}@keyframes pulse{0%,70%,100%{opacity:.4;transform:translateY(0)}35%{opacity:1;transform:translateY(-3px)}}@keyframes enter{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}@keyframes messageIn{from{opacity:0;transform:translateY(13px)}to{opacity:1;transform:translateY(0)}}@keyframes threadIn{from{opacity:.4;transform:translateX(24px)}to{opacity:1;transform:translateX(0)}}@keyframes popIn{from{opacity:0;transform:translateY(5px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes reactionPop{0%{transform:scale(.85)}50%{transform:scale(1.08)}100%{transform:scale(1)}}@media(min-width:1600px){.message-list,.channel-header,.channel-tabs,.pinned-banner,.composer-area{padding-left:54px;padding-right:54px}.message{max-width:1080px}}@media(max-width:1150px){.app{grid-template-columns:62px 215px minmax(0,1fr)}.sidebar{padding-left:12px;padding-right:12px}.channel-header,.channel-tabs,.pinned-banner{padding-left:25px;padding-right:25px}.message-list,.composer-area{padding-left:25px;padding-right:25px}.app.thread-open{grid-template-columns:62px 205px minmax(0,1fr) 320px}.thread-open .attachment-row{flex-wrap:wrap}.thread-open .attachment-side{display:none}.thread-open .poll-options{flex-direction:column}.thread-open .poll-option{flex:none}.thread-open .member-button{display:none}.thread-open .pinned-banner span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.thread-open .message-list{padding-left:18px;padding-right:18px}.thread-open .message p{font-size:12px}}@media(max-width:760px){.app{grid-template-columns:52px minmax(0,1fr)}.sidebar{display:none}.rail{padding-top:17px}.workspace-logo{width:32px;height:32px;font-size:29px;border-radius:9px}.rail-item{width:44px}.channel-header{padding:0 17px;height:75px}.channel-identity{gap:9px}.channel-icon{width:33px;height:33px}h1{font-size:17px}.channel-identity p{font-size:10px}.header-actions{gap:4px}.member-button,.header-divider,#channel-more{display:none}.channel-tabs{padding:0 17px;gap:19px}.pinned-banner{padding:0 16px}.pinned-banner span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.pinned-banner button{display:none}.message-list{padding:0 15px}.message{gap:8px}.message>.avatar{width:28px;height:28px;font-size:12px;border-radius:9px}.attachment-row{flex-direction:column}.photo-button{width:100%;height:142px}.attachment-side{width:100%}.attachment-note{display:none}.file-card{padding:9px}.poll-options{flex-direction:column;gap:5px}.poll-option{flex:none}.poll-label{display:none}.code-snippet{padding:8px;gap:7px;overflow:auto}.code-snippet code{font-size:9px;white-space:nowrap}.code-copy{display:none}.composer-area{padding:0 13px 15px}.typing-status{font-size:9px;gap:5px}.typing-avatars .avatar{width:17px;height:17px;font-size:8px}.send-controls>span{display:none}.app.thread-open{grid-template-columns:52px minmax(0,1fr)}.thread-open .conversation{display:none}.thread-panel{grid-column:2}.thread-header{height:75px}.app{min-height:650px}.modal-box{width:calc(100% - 28px)}.mention-menu{width:min(320px,calc(100vw - 90px))}.role-label{display:none}.last-reply{display:none}.composer textarea{font-size:12px}.message p{font-size:12px}.photo-label{display:none}.unread-divider{margin-left:-15px;margin-right:-15px}.online{font-size:10px}.composer-footnote{font-size:8px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
/* Round 1: constrain scrolling and make the live conversation readable. */
.message-list{min-height:0}.channel-header{height:76px}.channel-tabs{height:39px}.pinned-banner{height:32px}.day-divider{height:31px}.message{padding-top:6px;padding-bottom:6px}.message p{font-size:14px;line-height:1.65}.message-heading strong{font-size:14px}.message-heading time{font-size:11px;color:var(--secondary)}.photo-button{width:375px;height:151px}.attachment-row{margin-top:7px;max-width:660px}.attachment-side{width:263px}.attachment-note{font-size:12px}.file-meta strong{font-size:12px}.file-meta span{font-size:11px;color:var(--secondary)}.code-snippet{margin-top:6px;padding:7px 13px}.code-snippet code{font-size:12px}.code-language{font-size:10px}.poll{padding:9px 12px}.poll-heading strong{font-size:13px}.poll-option{font-size:12px;height:31px}.poll-foot,.poll-label{font-size:10px}.poll-option svg{vertical-align:-2px}.composer-area{padding-bottom:14px}.typing-status{height:31px;font-size:11px}.composer textarea{height:47px;min-height:47px;font-size:14px;padding-top:13px}.composer-toolbar{height:39px}.composer-footnote{font-size:10px}.send-controls>span{font-size:10px}.sidebar-footer span{font-size:11px}.role-label{font-size:10px}.photo-label{font-size:10px}.online{font-size:12px}.pinned-banner{font-size:12px}.reactions{margin-top:6px}.last-reply{color:var(--secondary)}.thread-open .code-snippet code{font-size:10px}.thread-open .attachment-row{gap:9px}.thread-open .photo-button{width:255px;height:137px}.thread-open .file-meta strong{font-size:10px}.thread-open .file-meta span{font-size:10px}
/* Round 2: enforce the viewport row, including the complete composer. */
.app{grid-template-rows:minmax(0,1fr)}.conversation,.sidebar,.thread-panel{min-height:0}.message-list{flex:1 1 0}.poll{padding:8px 12px}.poll-foot{line-height:1.5}.message-heading{margin-bottom:1px}.attachment-note{color:var(--secondary)}.attachment-note strong{font-weight:500}.channel-identity p{color:var(--secondary)}.composer textarea::placeholder{color:var(--secondary)}.thread-header{height:76px}.thread-body{min-height:0}.thread-open .message p{font-size:13px}.thread-body .message p{font-size:13px}.thread-body .message-heading strong{font-size:13px}.thread-composer label{font-size:11px}.thread-composer textarea{font-size:13px}.thread-typing{font-size:11px}.mention-item{font-size:13px}.mention-item .position{font-size:11px}.mention-heading{font-size:11px}.draft-file strong{font-size:12px}.draft-file small{font-size:10px}.sidebar-footer{padding-bottom:20px}.thread-open .attachment-note{display:none}.thread-open .attachment-side{justify-content:flex-end}.thread-open .attachment-row{max-width:600px}.thread-open .file-card{padding:11px}.thread-open .attachment-side{width:210px}.thread-open .code-snippet{overflow:auto}.thread-open .code-copy{display:none}.thread-open .code-language{font-size:9px;padding-right:8px}.thread-open .code-snippet{gap:9px}.thread-open .header-actions{gap:10px}.thread-open .last-reply{display:none}
/* Round 3: fit a complete exchange rather than a clipped final author. */
.message{padding-top:4px;padding-bottom:4px}.day-divider{height:26px}.unread-divider{margin-top:6px;margin-bottom:4px;line-height:15px}.poll-heading{display:none}.poll-options{margin-top:0}.poll{padding:9px 12px}.poll-foot{margin-top:7px}.composer textarea{height:44px;min-height:44px}.composer-toolbar{height:36px}.typing-status{height:29px}.composer-footnote{padding-top:6px}.code-snippet{padding-top:6px;padding-bottom:6px}.thread-root .message{padding:0}.thread-open .poll-heading{display:none}
.reactions:empty{display:none}.composer-footnote{color:var(--secondary)}.footnote-right{color:var(--secondary)}.send-controls>span{color:var(--secondary)}.message-heading time{color:var(--secondary)}.last-reply{color:var(--secondary)}.typing-status{color:var(--secondary)}.typing-status strong{color:var(--secondary)}.group-title{color:var(--secondary)}.workspace-status{color:var(--secondary)}.poll-foot,.poll-label{color:var(--secondary)}.channel-identity p{color:var(--secondary)}.thread-header span{color:var(--secondary)}.thread-composer label{color:var(--secondary)}.thread-typing{color:var(--secondary)}.mention-heading,.mention-item .position{color:var(--secondary)}.draft-file small{color:var(--secondary)}.composer textarea::placeholder{color:var(--secondary)}.thread-composer textarea::placeholder{color:var(--secondary)}.search-trigger kbd{color:var(--secondary)}.sidebar-footer span{color:var(--secondary)}.thread-reply-title{color:var(--secondary)}.role-label{color:var(--secondary)}
/* Round 4: remove weak contrast from information needed for everyday use. */
.workspace-status{color:var(--secondary)}.search-trigger,.search-trigger kbd{color:var(--secondary)}.group-title{color:var(--secondary)}.hash{color:var(--secondary)}.group-mark{color:var(--secondary)}.web-mark{color:var(--secondary)}.status-caption{color:var(--secondary)}.member-count{color:var(--secondary)}.tab{color:var(--secondary)}.tab span{color:var(--secondary)}.online{color:var(--secondary)}.pinned-banner,.pinned-banner button{color:var(--secondary)}.day-divider{color:var(--secondary)}.file-type{color:var(--secondary)}.attachment-note,.attachment-note strong{color:var(--secondary)}.file-meta span{color:var(--secondary)}.reaction{color:var(--secondary)}.reply-link{color:var(--secondary)}.last-reply,.message-heading time{color:var(--secondary)}.code-snippet code{color:var(--secondary)}.code-snippet .code-purple{color:var(--secondary)}.code-snippet .code-green{color:var(--secondary)}.code-language,.code-copy{color:var(--secondary)}.unread-divider{color:var(--secondary)}.poll-foot,.poll-label{color:var(--secondary)}.poll-option.voted{color:var(--secondary)}.composer textarea::placeholder,.thread-composer textarea::placeholder{color:var(--secondary)}.toolbar-left .icon-btn,.format-btn{color:var(--secondary)}.composer-footnote,.footnote-right,.send-controls>span{color:var(--secondary)}.typing-status,.typing-status strong{color:var(--secondary)}.mention-heading,.mention-item .position{color:var(--secondary)}.draft-file small{color:var(--secondary)}.thread-reply-title{color:var(--secondary)}.thread-header span,.thread-composer label,.thread-typing{color:var(--secondary)}.a-song{color:var(--secondary)}.sidebar-footer span{color:var(--secondary)}.sidebar-footer strong{color:var(--secondary)}.role-label{color:var(--secondary)}
.send-button:disabled{background:var(--border);color:var(--surface);box-shadow:none;cursor:default}.send-button:disabled:active{transform:none}
/* Independent review: preserve the parent object and keep the reply visible. */
.thread-body{padding:16px 19px}.thread-root{padding-bottom:12px}.thread-root .attachment-row{flex-direction:column;gap:6px;width:100%;margin-top:7px}.thread-root .photo-button{width:100%;height:96px}.thread-root .attachment-side{display:flex;width:100%;gap:5px;justify-content:flex-start}.thread-root .attachment-note{display:block;font-size:11px;line-height:1.6;padding:0}.thread-root .file-card{padding:7px 9px;gap:8px}.thread-root .file-type{height:29px;width:26px;font-size:8px}.thread-root .file-meta strong{font-size:11px}.thread-root .file-meta span{font-size:10px}.thread-root .photo-label{display:none}.thread-reply-title{margin-top:12px;margin-bottom:5px}.thread-body .message{padding:5px 3px}.thread-body .message p{font-size:12px;line-height:1.7}.thread-body .message-heading strong{font-size:12px}.thread-body .message .reactions{margin-top:5px}.thread-body .reaction{height:22px;font-size:10px}.thread-composer{padding-bottom:18px}.thread-composer textarea{height:54px}.thread-composer form>div{padding-bottom:8px}.thread-composer .send-button{height:27px}.thread-typing{height:28px}.mention-menu{width:320px}.mention-item{padding-top:7px;padding-bottom:7px}.mention-heading{padding-bottom:7px}
.channel-identity p{color:var(--secondary)}.tab span{color:var(--secondary)}.day-divider{color:var(--secondary)}.reaction.mine{color:var(--secondary)}.a-wang{color:var(--ink)}.thread-body .message p{font-size:13px;line-height:1.6}
.thread-open .message-list .attachment-note{display:block;font-size:11px;line-height:1.7}.thread-open .message-list .attachment-side{justify-content:center;gap:8px}
.thread-root .photo-button img{object-position:50% 28%}
.code-language,.code-copy{color:var(--secondary)}
.dm.selected{background:var(--soft);color:var(--secondary);font-weight:600}.message p strong{font-weight:600;color:var(--ink)}
.thread-composer textarea{height:44px}.thread-composer{padding-bottom:14px}.thread-composer label{margin-top:7px}
/* Fix 1 · the desk is a working part of the conversation. */

.app,.app.thread-open{grid-template-columns:252px minmax(0,1fr) 0px;transition:grid-template-columns 320ms var(--motion)}
.app.thread-open{grid-template-columns:252px minmax(0,1fr) 390px}
.rail{color:var(--border)}.rail-item:hover,.rail-item.current{background:var(--secondary);color:var(--surface)}.rail-dot{box-shadow:0 0 0 2px var(--secondary)}.workspace-logo{color:var(--ink);background:var(--border)}.rail-add{color:var(--border)}.sidebar{background:var(--surface);border-color:var(--soft)}.workspace-title{margin-bottom:24px}.search-trigger{background:var(--surface);border-color:var(--border);color:var(--secondary)}.quick-nav button,.channel,.dm{color:var(--secondary)}.channel.selected,.dm.selected{background:var(--soft);color:var(--secondary)}.channel:hover,.dm:hover,.quick-nav button:hover{background:var(--soft)}.hash,.group-title{color:var(--secondary)}.group-title{font-size:12px}.channel b{background:var(--border);color:var(--secondary)}.nav-count{background:var(--border);color:var(--ink)}.nav-count.light{background:var(--soft)}.sidebar-footer{border-color:var(--border)}.sidebar-footer strong{font-size:13px;color:var(--secondary)}.meeting-icon{background:var(--soft);color:var(--secondary)}.tiny-btn{color:var(--secondary)}.tiny-btn:hover{background:var(--border)}.a-you{background:var(--border);color:var(--ink)}.web-mark{background:var(--border);color:var(--secondary)}
.channel-header,.channel-tabs,.pinned-banner{padding-left:32px;padding-right:32px}.member-count{color:var(--secondary);white-space:nowrap;font-size:12px}.member-button .avatar{display:none}.header-actions{gap:12px}.channel-identity p{font-size:12px;color:var(--secondary)}.message-list{padding-left:32px;padding-right:32px;scroll-behavior:auto;overflow-anchor:auto}.message{padding-top:7px;padding-bottom:7px}.message-heading time,.last-reply{color:var(--secondary)}.message p{color:var(--secondary);line-height:1.65}.material-note{margin-top:3px!important}.attachment-row{align-items:flex-end;gap:12px;max-width:730px;margin-top:9px}.photo-button{width:385px;height:166px;flex-shrink:0;border-radius:8px}.photo-button img{object-position:50% 45%}.attachment-side{width:264px;justify-content:flex-end}.file-card{background:var(--white);border-color:var(--border);padding:12px}.file-meta strong{font-size:12px;color:var(--secondary)}.file-meta span{font-size:11px;color:var(--secondary)}.file-type{background:var(--border);color:var(--ink)}.file-thumb{width:40px;height:40px;object-fit:contain;background:var(--white);border:1px solid var(--border);border-radius:4px;flex-shrink:0}.photo-label{display:none}.reactions:empty{display:none!important}.reaction-count{font-size:11px!important}.reaction{color:var(--secondary)}.reaction.mine{color:var(--ink)}.poll{padding:0;border:0;border-radius:0;background:none;max-width:650px;margin-top:9px}.poll-option{height:35px;border-color:var(--border);font-size:12px;background:var(--white)}.poll-option:before{background:var(--border)}.poll-option.voted{color:var(--ink);border-color:var(--secondary)}.poll-option.voted:before{background:var(--border)}.poll-foot{color:var(--secondary);font-size:11px;margin-top:7px}.code-copy,.code-language{color:var(--secondary)}.message.is-thread{background:var(--surface)}
.composer-area{padding:18px 32px 18px;position:relative}.composer{border:1px solid var(--border);border-top:0;border-radius:0 0 11px 11px;background:var(--white);box-shadow:0 3px 0 var(--soft)}.composer:focus-within{border-color:var(--secondary);box-shadow:0 3px 0 var(--border)}.composer textarea{height:44px;min-height:44px;max-height:110px;padding:12px 17px 6px;font-size:14px;line-height:1.6}.composer textarea::placeholder{color:var(--secondary)}.composer-toolbar{height:37px;padding-bottom:8px}.send-button{transition:transform 150ms var(--motion),background 150ms}.send-button:disabled{background:var(--border);color:var(--secondary);transition:none}.keyboard-hint{color:var(--secondary)!important}.tabletop{height:48px;border:1px solid var(--border);border-bottom:1px solid var(--border);border-radius:11px 11px 0 0;background:var(--surface);display:flex;gap:13px;padding:0 17px;position:relative;flex-shrink:0;color:var(--secondary);font-size:13px}.table-caption{font-size:11px;white-space:nowrap;display:flex;align-items:center;gap:5px}.table-seats{display:flex;gap:16px;align-self:stretch;align-items:flex-end;padding-bottom:0}.table-seat{width:34px;height:38px;position:relative;transition:transform 260ms var(--motion);display:grid;place-items:center;transform:translateY(6px)}.table-seat>.avatar{width:32px;height:32px;border-radius:50%;font-size:13px;border:3px solid var(--white);box-shadow:0 1px 1px color-mix(in srgb, var(--secondary) 15%, transparent)}.table-seat.is-typing{transform:translateY(-9px)}.seat-bubble{position:absolute;bottom:calc(100% + 2px);left:50%;transform:translateX(-50%) scale(.9);background:var(--white);border:1px solid var(--border);border-radius:8px;padding:5px 9px;box-shadow:0 3px 8px color-mix(in srgb, var(--ink) 6%, transparent);opacity:0;transition:opacity 180ms,transform 180ms var(--motion);pointer-events:none;line-height:12px}.seat-bubble:after{content:'';position:absolute;bottom:-4px;left:18px;width:6px;height:6px;transform:rotate(45deg);border-right:1px solid var(--border);border-bottom:1px solid var(--border);background:var(--white)}.table-seat.is-typing .seat-bubble{opacity:1;transform:translateX(-50%) scale(1)}.typing-dots i{width:4px;height:4px;background:var(--secondary);animation:none}.is-typing .typing-dots i{animation:pulse 1.1s infinite}.table-state{margin-left:auto;font-size:13px;color:var(--secondary);white-space:nowrap}.tabletop .live-dot{background:var(--secondary)}.text-flight{font-size:14px;line-height:1.65;color:var(--secondary);white-space:pre-wrap;background:var(--white);border-radius:3px;box-shadow:0 1px 0 color-mix(in srgb, var(--border) 30%, transparent);padding:0 4px}.avatar-flight>.avatar{width:36px;height:36px;border-radius:12px;box-shadow:0 3px 6px color-mix(in srgb, var(--secondary) 13%, transparent)}.new-message{animation:none}.entry-message{animation:entryDesk 260ms var(--motion) both;transform-origin:top left}@keyframes entryDesk{from{opacity:0;transform:translateY(-12px)}to{opacity:1;transform:translateY(0)}}.initial-enter{animation:none}.reaction-people{position:fixed;z-index:50;display:flex;align-items:center;gap:6px;font-size:11px;background:var(--ink);color:var(--surface);border-radius:7px;padding:8px 10px;box-shadow:0 4px 13px color-mix(in srgb, var(--ink) 13%, transparent)}.reaction-people .avatar{border:0}.reaction-people>span:not(.avatar){margin-right:7px}.delivery-retry,.file-retry{font-size:12px;color:var(--secondary);margin-top:4px}.draft-file{background:var(--soft);border-color:var(--border);max-width:290px}.draft-file small{color:var(--secondary)}.draft-file .file-thumb{height:38px;width:44px}.draft-file.failed{border-color:var(--secondary)}.draft-file.loading{position:relative;overflow:hidden}.draft-file.loading:after{content:'';position:absolute;left:0;bottom:0;height:2px;width:50%;background:var(--secondary);animation:readFile 600ms infinite alternate}@keyframes readFile{to{transform:translateX(100%)}}.drop-hint{position:fixed;inset:147px 30px 22px 346px;z-index:30;border:2px dashed var(--secondary);background:color-mix(in srgb, var(--surface) 93%, transparent);box-shadow:0 0 0 18px color-mix(in srgb, var(--white) 69%, transparent);pointer-events:none;border-radius:12px;color:var(--secondary)}.modal-shade{backdrop-filter:none;background:color-mix(in srgb, var(--ink) 15%, transparent)}.search-section{font-size:12px;color:var(--secondary);margin:14px 9px 5px}.modal-box{background:var(--white)}.pin-item{display:flex;align-items:center;gap:12px;padding:14px 0;border-bottom:1px solid var(--border)}.pin-item svg{color:var(--secondary);width:16px}.pin-item p{margin:0}.file-list-view .file-card{max-width:580px;margin-bottom:12px}.file-list-view .file-thumb{height:66px;width:80px}.file-list-view .file-type{height:56px;width:48px}.file-list-view h2{margin-bottom:23px}
.thread-panel{animation:none;overflow:hidden;opacity:0;transition:opacity 180ms var(--motion);width:390px;min-width:390px}.thread-open .thread-panel{opacity:1}.thread-header,.thread-body,.thread-composer{width:390px}.thread-header{padding:0 20px}.thread-body{padding:13px 18px}.thread-body .message p{font-size:13px;line-height:1.65}.thread-root .material-note{margin-top:3px!important}.thread-root .attachment-row{flex-direction:column;align-items:stretch;gap:8px}.thread-root .photo-button{width:100%;height:111px}.thread-root .attachment-side{width:100%}.thread-root .file-card{padding:7px 9px}.thread-root .photo-button img{object-position:50% 36%}.thread-root{padding-bottom:11px}.thread-reply-title{margin-top:10px;margin-bottom:5px}.thread-body .message{padding:6px 3px}.thread-body .message-heading strong{font-size:13px}.thread-open .channel-header,.thread-open .channel-tabs,.thread-open .pinned-banner{padding-left:24px;padding-right:24px}.thread-open .message-list{padding-left:24px;padding-right:24px}.thread-open .composer-area{padding-left:24px;padding-right:24px}.thread-open .message-list .attachment-row{gap:9px}.thread-open .message-list .photo-button{width:310px;height:151px}.thread-open .message-list .attachment-side{width:206px}.thread-open .file-meta strong{font-size:11px}.thread-open .table-state{font-size:12px;overflow:hidden;text-overflow:ellipsis}.thread-open .table-seats{gap:12px}.thread-open .table-caption{font-size:10px}.thread-composer{padding:16px 18px 14px}.thread-typing.tabletop{height:40px;padding:0 11px;gap:9px}.thread-typing .table-seats{gap:8px}.thread-typing .table-seat{width:27px;height:32px}.thread-typing .table-seat>.avatar{height:27px;width:27px;font-size:11px}.thread-typing .table-state{font-size:11px;max-width:90px;overflow:hidden;text-overflow:ellipsis}.thread-typing .table-caption{display:none}.thread-composer form{border-top:0;border-radius:0 0 8px 8px}.thread-composer textarea{display:block;height:44px;min-height:44px;max-height:96px;padding:10px 12px;line-height:1.65}.thread-composer label{color:var(--secondary);font-size:11px}.thread-composer form>div{padding-bottom:8px}.thread-composer .send-button{height:27px}.icon-btn:has(use[href="#close"]) svg{width:18px;height:18px;stroke-width:1.75}
@media(max-width:900px){.app,.app.thread-open{grid-template-columns:200px minmax(0,1fr) 0px}.app.thread-open{grid-template-columns:200px 0px 1fr}.thread-panel,.thread-header,.thread-body,.thread-composer{width:100%;min-width:0}.table-state{display:none}.header-actions{gap:4px}.member-count{font-size:10px}.table-caption{display:none}.attachment-side{min-width:160px}.attachment-row{flex-wrap:wrap}.photo-button{max-width:100%}.drop-hint{left:275px}.thread-open .conversation{visibility:hidden}}
@media(max-width:600px){.app,.app.thread-open{grid-template-columns:minmax(0,1fr) 0px}.sidebar{display:none}.conversation{grid-column:1}.thread-panel{grid-column:1;position:absolute;right:0;top:0;bottom:0;width:100%;min-width:0;z-index:20}.channel-header,.channel-tabs,.pinned-banner,.composer-area{padding-left:16px;padding-right:16px}.message-list{padding-left:16px;padding-right:16px}.channel-identity{gap:8px}.channel-icon{display:none}.header-actions .member-button,.header-divider{display:none}.tabletop{padding:0 10px}.table-seats{gap:12px}.photo-button{width:100%;height:150px}.attachment-side{width:100%}.drop-hint{inset:140px 12px 12px 60px}.app.thread-open{grid-template-columns:minmax(0,1fr) 0px}.thread-open .conversation{visibility:visible}.thread-open .composer-area{padding:18px 16px}.keyboard-hint{display:none}}
/* Fix 1 · first visual inspection: keep the complete conversation in view. */
.message{padding-top:4px;padding-bottom:4px}.photo-button{height:151px}.composer-area{padding-top:12px;padding-bottom:12px}.tabletop{height:36px}.table-seat{height:32px}.composer{display:flow-root}.material-note{font-size:13px!important}.thread-open .message-list .photo-button{height:137px}.thread-body .message{padding-top:5px;padding-bottom:5px}.thread-typing.tabletop{height:36px}.thread-root .photo-button{height:103px}.thread-composer{padding-top:12px}.thread-open .composer-area{padding-top:12px;padding-bottom:12px}
/* Fix 2 · the shared desk is a stable, visible surface. */
.photo-button{height:146px}.day-divider{height:20px}
.rail-item{height:46px;min-height:46px;margin-bottom:14px}.rail-item svg{width:24px;height:24px}.rail-item.current{border-radius:50%}.rail-spacer{height:25px}
.app,.app.thread-open{transition:grid-template-columns 320ms cubic-bezier(.25,.46,.45,.94)}
.channel-utilities{display:flex;gap:4px;align-items:center}.channel-utilities .tab{height:31px;min-width:34px;display:flex;align-items:center;justify-content:center;gap:4px;border:0;border-radius:6px;padding:0 7px;margin:0;font-size:11px;color:var(--secondary)}.channel-utilities .tab svg{width:16px;height:16px}.channel-utilities .tab.active{background:var(--soft);color:var(--secondary)}.channel-utilities .tab:hover{background:var(--soft)}.channel-utilities .tab:after{display:none}.channel-utilities .tab span{font-size:11px;margin:0}.header-actions{gap:10px}.channel-header{height:76px;min-height:76px}.is-dm .channel-icon{width:36px;height:36px}.is-dm .channel-subtitle{color:var(--secondary)}
.composer-area,.thread-open .composer-area{padding-top:58px;padding-bottom:14px}.tabletop{height:48px;background:var(--border);border-color:var(--border);padding:0 18px;gap:24px;align-items:center}.table-seats{gap:20px;align-items:flex-end}.table-seat{width:38px;height:38px;transform:translateY(7px)}.table-seat>.avatar{width:38px;height:38px;border-radius:50%;border:3px solid var(--surface);font-size:14px}.table-seat.is-typing{transform:translateY(-10px)}.table-seat.is-landing>.avatar{visibility:hidden}.table-seat:hover>.avatar{box-shadow:0 0 0 2px var(--secondary)}.table-caption{font-size:12px;color:var(--secondary)}.tabletop .live-dot{width:5px;height:5px}.desk-preview{position:absolute;left:110px;bottom:calc(100% + 16px);height:30px;display:flex;align-items:center;gap:9px;max-width:calc(100% - 130px);padding:0 12px;background:var(--surface);border:1px solid var(--border);border-radius:9px;box-shadow:0 3px 0 var(--border);color:var(--secondary);white-space:nowrap;font-size:12px}.desk-preview:after{content:'';position:absolute;bottom:-5px;left:31px;width:8px;height:8px;transform:rotate(45deg);border-right:1px solid var(--border);border-bottom:1px solid var(--border);background:var(--surface)}.desk-preview strong{font-weight:600}.desk-preview>span:not(.typing-dots){overflow:hidden;text-overflow:ellipsis}.typing-dots{display:flex;gap:3px;margin-left:2px;flex-shrink:0}.has-typing .typing-dots i{animation:pulse 1.1s infinite}.has-typing .typing-dots i:nth-child(2){animation-delay:150ms}.has-typing .typing-dots i:nth-child(3){animation-delay:300ms}.composer-area:has(.mention-menu:not([hidden])) .desk-preview{visibility:hidden}.draft-file strong{color:var(--ink)}.draft-file.failed{background:var(--soft)}.draft-file.failed:after{content:'';position:absolute;bottom:0;left:0;width:53%;height:3px;background:var(--secondary)}.draft-file{position:relative;overflow:hidden}.draft-file .file-retry{align-self:center;border:1px solid var(--secondary);border-radius:5px;padding:4px 6px;margin:0;white-space:nowrap}.draft-file.failed{max-width:365px}.thread-root .photo-button{height:89px}.thread-composer{padding-top:57px}.thread-typing.tabletop{height:0;border:0;background:none;padding:0 8px;gap:0;overflow:visible}.thread-typing .table-caption{display:none}.thread-typing .table-seats{position:absolute;bottom:0;left:14px;gap:12px}.thread-typing .table-seat{width:32px;height:32px}.thread-typing .table-seat>.avatar{width:32px;height:32px;border-radius:50%;font-size:12px}.thread-typing .desk-preview{left:48px;bottom:20px;height:29px;max-width:calc(100% - 50px);font-size:11px;gap:6px;padding:0 8px}.thread-typing .desk-preview:after{display:none}.thread-composer:has(.has-typing){padding-top:57px}.thread-composer form{border-top:1px solid var(--border);border-radius:8px}.reply-link,.reply-count{white-space:nowrap}.thread-closing .last-reply{display:none}.thread-closing .thread-panel{width:390px;min-width:390px}.thread-closing .thread-root .reactions{flex-wrap:nowrap}.avatar-flight>.avatar{width:38px;height:38px;border-radius:50%;border:3px solid var(--surface);box-shadow:none}.thread-body{padding-bottom:12px}.icon-btn:has(use[href="#close"]) svg{width:22px;height:22px}.reaction-people small{font-size:11px;color:var(--border);padding-left:5px;border-left:1px solid var(--secondary);white-space:nowrap}
@media(max-width:900px){.channel-utilities{gap:0}.channel-utilities .tab{min-width:25px;padding:0 3px}.header-actions{gap:4px}.header-divider,#channel-huddle{display:none}.table-seats,.thread-open .table-seats{gap:10px}.tabletop{gap:8px;padding:0 10px}.desk-preview{left:15px;max-width:calc(100% - 30px)}.channel-identity p{max-width:220px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}}
@media(max-width:600px){.channel-utilities{display:none}.table-seat,.table-seat>.avatar{width:34px;height:34px}.table-seats{gap:12px}.thread-closing .thread-panel{width:100%;min-width:0}.thread-open .composer-area{padding-top:62px}.channel-identity p{max-width:200px}}
@media(prefers-reduced-motion:reduce){.app,.app.thread-open,.table-seat{transition:none}.has-typing .typing-dots i{animation:none}}

/* Art direction 1: the desk owns the colour; navigation and conversation recede. */
.rail{background:var(--rail);color:#b6cccd}.workspace-logo{background:#e1ecee;color:var(--rail);box-shadow:none}.rail-item.current,.rail-item:hover{background:#30585b;color:#fff}.rail-dot{display:none}.rail-spacer{height:25px}.rail-bottom{gap:0}.rail .a-you{background:#d7e3e5;color:var(--rail)}
.sidebar{background:#eff4f5;border-color:var(--line);padding-top:26px}.workspace-title{margin-bottom:24px}.search-trigger{background:transparent;border-color:var(--border);color:var(--secondary)}.search-trigger kbd{display:none}.side-group{margin-top:26px}.group-title{padding-left:10px;color:var(--secondary)}.group-title>span svg{display:none}.channel,.dm{color:#53666c}.channel.selected,.dm.selected{background:#dce6e8;color:var(--ink)}.channel.selected .hash{color:var(--ink)}.channel:hover,.dm:hover{background:#e2ebed}.group-mark,.web-mark{background:#dce5e7;color:#53666c}.sidebar .avatar i{display:none}.dm-unread{display:none}
.avatar{background:#dfe8ea;color:#4a5f66}.a-song,.a-chen,.a-zhou,.a-wang,.a-xu,.a-you{background:#dfe8ea;color:#4a5f66}.a-zhou{background:#d2dde1}.a-song{background:#e8eef0}.a-wang{background:#c9d8dc}.a-xu{background:#eef2f3}.a-you{background:#cbd8df}.avatar i{background:#607178}.away{background:#607178!important}
.channel-header{height:76px;min-height:76px}.channel-icon{background:none;color:var(--secondary);width:24px;height:24px;border-radius:0}.channel-identity{gap:8px}.channel-identity p:empty{display:none}.header-actions{gap:0}.header-actions .icon-btn{color:var(--secondary)}
.message p,.message p strong{color:var(--ink)}.message.is-thread,.message:hover{background:#edf2f3}.message-heading time,.last-reply{color:var(--secondary)}.mention{background:#e4ecee;color:#354e56}.reaction,.reaction.mine{background:#edf2f3;border-color:#dce5e7;color:#53666c}.reply-link,.reply-count{color:#425d65}.unread-divider{color:var(--secondary)}.unread-divider:before,.unread-divider:after{background:var(--line)}.file-type{background:#e6edef;color:#53666c}.file-card{background:var(--white);border-color:var(--border)}.file-meta strong{color:#42565d}.file-meta span{color:var(--secondary)}.file-thumb{filter:grayscale(1);border-color:var(--border)}
.poll-option{border-color:var(--border);color:#50636a;background:#fff}.poll-option:before{background:#e6edef}.poll-option.voted{color:var(--ink);border-color:#8fa6ac}.poll-option.voted:before{background:#d6e2e5}.poll-foot{color:var(--secondary)}.poll-option svg{color:var(--ink)}
.composer{border-color:#89bdb7;background:#fff;box-shadow:0 3px 0 #e0eeec}.composer:focus-within{border-color:var(--accent);box-shadow:0 3px 0 #c9e5e1}.tabletop{background:var(--table);border-color:#89bdb7;border-bottom-color:#a9d5cf;height:48px;gap:0}.table-seats{gap:20px}.table-seat>.avatar{background:#e5f5f1;color:#195c58;border-color:#f8fbfc}.table-seat.is-typing>.avatar{background:var(--accent);color:#fff}.table-seat:hover>.avatar{box-shadow:0 0 0 2px #79bbb2}.desk-preview{left:52px;background:#fff;border-color:#89bdb7;color:#254c4d;box-shadow:none;max-width:calc(100% - 80px)}.desk-preview:after{background:#fff;border-color:#89bdb7}.typing-dots i{background:var(--accent)}
.composer textarea::placeholder,.thread-composer textarea::placeholder{color:var(--secondary)}.toolbar-left .icon-btn,.format-btn{color:var(--secondary)}.send-button{background:var(--accent);color:#fff;box-shadow:none}.send-button:hover{background:#076d67}.send-button:disabled{background:#e6edef;color:#798b91}.thread-composer .send-button{background:#344e55;color:#fff}.thread-composer .send-button:disabled{background:#e6edef;color:#798b91}.thread-typing.tabletop{background:none}.thread-typing .desk-preview{color:#425d65;border-color:var(--border);box-shadow:0 3px 0 #e6edef}.thread-typing .table-seat.is-typing>.avatar{background:#344e55}.thread-typing .typing-dots i{background:#607178}.thread-open .composer .send-button{background:var(--accent)}
.mention-item.highlight,.mention-item:hover{background:#edf2f3}.draft-file,.draft-file.failed{background:#f2f6f7;border-color:#bcced2}.draft-file strong{color:var(--ink)}.draft-file small{color:var(--secondary)}.draft-file.failed:after,.draft-file.loading:after{background:#526f77}.draft-file .file-retry{border-color:#9eb4ba;color:#354f56}.delivery-retry,.file-retry{color:#425d65}.drop-hint{border-color:var(--accent);background:#eef9f7ee;color:#195c58}.text-flight{color:var(--ink);background:#fff}.avatar-flight>.avatar{border-color:#f8fbfc;background:var(--accent);color:#fff}.thread-open .avatar-flight>.avatar{background:#344e55}.reaction-people{background:var(--rail);color:#fff}.reaction-people small{color:#d4e3e5;border-color:#617d80}.modal-action{background:#344e55;color:#fff}.pin-item svg{color:var(--secondary)}.code-snippet{background:#edf2f3;border-color:var(--border)}.code-snippet code,.code-snippet .code-purple,.code-snippet .code-green{color:#425d65}
@media(max-width:600px){.desk-preview{left:15px;max-width:calc(100% - 30px)}}

/* Round 3: quieter message metadata; only a ready desk action gains colour. */
.thread-open .composer .send-button:disabled{background:#e6edef;color:#798b91}.reply-link{font-size:12px;margin-left:5px}.back-messages{color:#425d65;font-size:13px;padding:12px 0}.back-messages:hover{text-decoration:underline}.file-list-view h2{margin-top:12px}.composer-area,.thread-open .composer-area{padding-top:58px}.message{padding-top:8px;padding-bottom:8px}.thread-body .message{padding-top:5px;padding-bottom:5px}
/* Round 4: coworkers sit on the upper edge, then rise into the reserved air. */
.tabletop:not(.thread-typing) .table-seat{transform:translateY(-18px)}
.tabletop:not(.thread-typing) .table-seat.is-typing{transform:translateY(-34px)}
.tabletop:not(.thread-typing) .desk-preview{bottom:calc(100% + 44px)}
.composer-area,.thread-open .composer-area{padding-top:84px}
.tabletop:not(.thread-typing) .table-seat>.avatar{box-shadow:0 2px 0 #89bdb755}
/* Final subtraction: one deep-teal navigation surface, one attachment entry. */
.rail{background:#103235}.sidebar{background:var(--rail);border-color:#254e52;color:#e7f0f2}.workspace-title{color:#e7f0f2}.search-trigger{border-color:#3b6267;color:#bed0d3;background:none}.group-title,.tiny-btn{color:#a7c1c5}.tiny-btn:hover{background:#2b5157}.channel,.dm{color:#bed0d3}.hash{color:#a7c1c5}.channel.selected,.dm.selected{background:#30575d;color:#fff}.channel.selected .hash{color:#fff}.channel:hover,.dm:hover{background:#2b5157}.group-mark{background:#31555c;color:#bed0d3}.sidebar .avatar{background:#31555c;color:#d9e5e7}
/* Attachment states keep the first author and the final reply in view. */
.conversation:has(.attachment-draft:not([hidden])) .message{padding-top:4px;padding-bottom:4px}
.conversation:has(.attachment-draft:not([hidden])) .day-divider{display:none}
.conversation:has(.attachment-draft:not([hidden])) .photo-button{height:110px}

/* Fix 3 · one navigation surface, a narrow edge shared only by the seats. */
.sidebar-profile{margin-top:auto;padding:24px 10px 2px}.sidebar-profile .my-profile{width:32px;height:32px;font-size:13px}
.tabletop:not(.thread-typing){height:20px;border:0;background:none;padding:0 16px;position:relative}
.tabletop:not(.thread-typing) .table-seats{height:10px;background:var(--table);border-radius:5px 5px 0 0;padding:0 10px;gap:16px;align-self:flex-end;align-items:flex-end}
.tabletop:not(.thread-typing) .table-seat{width:32px;height:32px;transform:translateY(-4px)}
.tabletop:not(.thread-typing) .table-seat>.avatar{width:32px;height:32px;font-size:12px;border-width:2px;box-shadow:none}
.tabletop:not(.thread-typing) .table-seat.is-typing{transform:translateY(-20px)}
.tabletop:not(.thread-typing) .desk-preview{bottom:calc(100% + 24px);left:44px}
.composer,.composer:focus-within{border:1px solid var(--border);border-radius:8px;box-shadow:none}
.composer-area,.thread-open .composer-area{padding-top:68px}
.thread-open .conversation{background:#f0f4f5}
.thread-open .conversation .message p,.thread-open .conversation .message-heading strong,.thread-open .conversation .message-heading time{color:#566b72}
.thread-open .conversation .photo-button{opacity:.72}
.thread-open .conversation .message.is-thread{background:#eaf0f2}
.thread-open .conversation .table-seats{background:#dce5e7}
.thread-open .conversation .table-seat>.avatar{background:#dfe8ea;color:#607178}
.thread-open .conversation .table-seat.is-typing>.avatar{background:#607178;color:#fff}
.thread-open .conversation .desk-preview{color:#607178;border-color:var(--border);box-shadow:none}
.thread-open .composer .send-button:not(:disabled){background:#344e55}
.thread-composer .send-button:not(:disabled),.thread-typing .table-seat.is-typing>.avatar{background:var(--accent)}
.thread-typing .desk-preview{border-color:#89bdb7;color:#254c4d;box-shadow:none}
.thread-typing .typing-dots i{background:var(--accent)}
.thread-open .avatar-flight>.avatar{background:var(--accent)}
.avatar-flight>.avatar{width:32px;height:32px;border-width:2px;font-size:12px}
@media(max-width:600px){.app,.app.thread-open{grid-template-columns:minmax(0,1fr) 0px}.conversation{grid-column:1}.thread-panel{width:100%;grid-column:1}.thread-closing .thread-panel{width:100%}.drop-hint{inset:140px 12px 12px}.tabletop:not(.thread-typing){padding:0 8px}.tabletop:not(.thread-typing) .table-seats{gap:12px}}

/* Acceptance 1 · conversation flows into its shared edge; overlays never size the log. */
.message-list{flex:0 1 auto}.photo-button,.conversation:has(.attachment-draft:not([hidden])) .photo-button,.thread-open .message-list .photo-button{width:232px;height:88px}
.side-group .tiny-btn{opacity:0;pointer-events:none}.side-group:hover .tiny-btn,.side-group:focus-within .tiny-btn{opacity:1;pointer-events:auto}
.mention-menu{position:fixed;animation:none}
.file-card,.file-list-view .file-card{width:264px;max-width:100%;flex:none}.attachment-row{max-width:none;flex-wrap:wrap}.file-meta{min-width:0;flex:1}.file-meta strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.thread-root .message-content>p{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:8px}
.thread-attachments{display:flex;align-items:center;gap:8px}.photo-thumb{width:48px;height:48px;flex:none;border-radius:5px;overflow:hidden}.photo-thumb img{width:100%;height:100%;object-fit:cover}
.thread-root .thread-attachments .file-card{width:calc(100% - 56px);padding:8px;gap:6px;height:48px}.thread-root .thread-attachments .file-type,.thread-root .thread-attachments .file-thumb{width:30px;height:30px;flex:none}.thread-root .thread-attachments .file-meta strong{font-size:11px}
.thread-root .thread-attachments:not(:has(.photo-thumb)){flex-wrap:wrap}.thread-root .thread-attachments:not(:has(.photo-thumb)) .file-card{width:264px}
.thread-header span,.thread-reply-title{font-size:12px;color:#566b72}.thread-reply-title{margin-top:14px;margin-bottom:8px}
.thread-open .conversation{background:var(--paper)}.thread-open .conversation .message p,.thread-open .conversation .message-heading strong{color:var(--ink)}.thread-open .conversation .message-heading time{color:var(--secondary)}
.thread-open .conversation .photo-button{opacity:1}.thread-open .conversation .message.is-thread{background:#edf2f3}.thread-open .conversation .desk-preview{color:#566b72}
.thread-origin{display:flex;align-items:center;gap:4px;font-size:12px;color:#566b72;margin-top:7px}.thread-origin svg{width:12px;height:12px}.thread-origin:hover{text-decoration:underline}
@media(max-width:600px){.file-card{max-width:100%}.photo-button{max-width:100%}.side-group .tiny-btn{opacity:1;pointer-events:auto}}

/* The shared edge sits at the centre of the conversation, rather than as a left toolbar. */
.tabletop:not(.thread-typing) .table-seats{margin-inline:auto}
.tabletop:not(.thread-typing) .desk-preview{left:50%;transform:translateX(-50%);max-width:calc(100% - 32px)}
.tabletop:not(.thread-typing) .desk-preview:after{left:calc(50% + var(--caret-shift,0px))}
.thread-open .message-list .attachment-side{width:264px}

/* Fix 6 · read and reply share one measured column and a continuous edge. */
.conversation>.message-list,.conversation>.composer-area{width:min(100%,820px);align-self:center;padding-left:24px;padding-right:24px}
.conversation>.composer-area,.thread-open .conversation>.composer-area{padding-top:44px}
@media(max-width:600px){.conversation>.message-list,.conversation>.composer-area{padding-left:16px;padding-right:16px}.conversation>.composer-area,.thread-open .conversation>.composer-area{padding-top:44px}}