/* A desktop workroom for four colleagues. No external font or image requests. */
:root{color-scheme:light;--ink:#22343b;--blue:#24796e;--line:#e2e9e8;--surface:#f4f7f7;--white:#fff;--muted:#66777f;--selected:#e6f1ee;--focus:#24796e}
*{box-sizing:border-box}
body{margin:0;color:var(--ink);background:var(--surface);font:14px/1.65 -apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;-webkit-font-smoothing:antialiased}
button,input,textarea,select{font:inherit}
button{cursor:pointer;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:8px;padding:7px 13px;transition:background-color .12s,border-color .12s}
button:hover{background:var(--surface);border-color:#c5d6d1}
button:disabled{opacity:.55;cursor:wait}
input,textarea,select{border:1px solid var(--line);border-radius:8px;color:var(--ink);background:#fff;padding:9px 12px;min-width:0}
input::placeholder,textarea::placeholder{color:#718087}
input:focus,textarea:focus,select:focus{outline:2px solid var(--focus);outline-offset:2px}
button:focus-visible,a:focus-visible,.attachment-button:focus-within,summary:focus-visible{outline:2px solid var(--focus);outline-offset:3px}
[hidden]{display:none!important}
a{color:var(--blue);text-underline-offset:3px}
h1,h2,p{margin:0}h1{font-size:18px}h2{font-size:19px}
.muted{color:var(--muted);font-size:12px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0)}
.team-header{height:64px;display:flex;align-items:center;gap:20px;padding:0 26px;background:#fff;border-bottom:1px solid var(--line)}
.wordmark{display:flex;align-items:center;gap:12px;color:var(--ink);font-size:18px;font-weight:650;letter-spacing:.04em;text-decoration:none;white-space:nowrap}
.wordmark::before{content:'';width:23px;height:23px;flex:none;background:var(--blue);border-radius:5px;box-shadow:inset -10px -10px 0 #4f9b8d;clip-path:polygon(0 0,44% 0,44% 44%,56% 44%,56% 0,100% 0,100% 44%,56% 44%,56% 56%,100% 56%,100% 100%,56% 100%,56% 56%,44% 56%,44% 100%,0 100%,0 56%,44% 56%,44% 44%,0 44%)}
.subtitle{font-size:12px;color:var(--muted);padding-left:20px;border-left:1px solid var(--line)}
#connection{font-size:12px;color:var(--muted);margin-left:auto;display:flex;align-items:center;gap:7px}
#connection:not(:empty)::before{content:'';width:6px;height:6px;border-radius:50%;background:currentColor}
#connection[data-state=connected]{color:#24796e}
#connection[data-state=reconnecting]{color:#95642c}
#tasks-toggle{font-size:13px;padding:7px 14px;display:flex;align-items:center;gap:8px}
#tasks-toggle::before{content:'';width:14px;height:14px;border:1.5px solid currentColor;border-radius:3px;background:linear-gradient(currentColor,currentColor) 4px 3px/6px 1px no-repeat,linear-gradient(currentColor,currentColor) 4px 7px/6px 1px no-repeat}
#tasks-toggle[aria-expanded=true]{background:var(--selected);color:var(--blue);border-color:#c5dcd5}
#login-view{min-height:calc(100dvh - 64px);display:grid;place-items:center;padding:32px 24px}
.login-box{width:min(420px,100%);background:#fff;border:1px solid var(--line);padding:42px;border-radius:18px;box-shadow:0 14px 48px #22343b08}
.login-box::before{content:'';display:block;width:32px;height:32px;background:var(--blue);border-radius:9px;margin-bottom:24px;box-shadow:inset -14px -14px 0 #4f9b8d;clip-path:polygon(0 0,44% 0,44% 44%,56% 44%,56% 0,100% 0,100% 44%,56% 44%,56% 56%,100% 56%,100% 100%,56% 100%,56% 56%,44% 56%,44% 100%,0 100%,0 56%,44% 56%,44% 44%,0 44%)}
.login-box h1{font-size:25px;font-weight:600;letter-spacing:.03em}
.login-box>p{color:var(--muted);font-size:13px;margin:8px 0 26px}
.login-box label{display:block;font-size:13px;margin:18px 0 7px}
.login-box input{width:100%;height:45px;background:#fbfcfc}
.login-box button{margin-top:28px;width:100%;background:var(--blue);border-color:var(--blue);color:#fff;padding:10px;font-weight:550}
.login-box button:hover{background:#1b6057}
.login-box #login-error{color:#a23d35;font-size:13px;margin:14px 0 0}
#login-error:empty{display:none}
#workspace{margin:0;height:calc(100dvh - 64px);display:grid;grid-template-columns:272px minmax(0,1fr);overflow:hidden;background:#fff}
.sidebar{border-right:1px solid var(--line);overflow:auto;min-height:0;background:#fff;scrollbar-width:thin}
.profile{display:flex;align-items:center;gap:12px;color:var(--ink);padding:17px 20px;min-height:76px;border-bottom:1px solid var(--line)}
.profile strong{font-size:15px;font-weight:600}
.profile #logout{margin-left:auto;border:0;background:none;color:var(--muted);font-size:12px;padding:5px 0}
.profile #logout:hover{color:var(--blue)}
.avatar{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;background:#e3eee9;color:#24796e;font-size:20px;font-weight:550;flex-shrink:0}
.profile .avatar{background:#24796e;color:#fff}
.avatar.bot{background:#eeeaf6;color:#766393}
.tabs{display:flex;padding:8px 18px 0;gap:16px;border-bottom:1px solid var(--line)}
.tabs button{flex:1;border:0;border-bottom:2px solid transparent;border-radius:0;font-size:13px;color:var(--muted);padding:10px 0;background:transparent}
.tabs button[aria-pressed=true]{border-bottom-color:var(--blue);color:var(--blue);font-weight:600}
#conversation-list{padding:9px}
.conversation{display:flex;align-items:center;gap:12px;width:100%;border:0;padding:13px 11px;text-align:left;color:var(--ink);background:#fff;margin:3px 0;border-radius:10px;min-height:70px}
.conversation:hover{background:var(--surface)}
.conversation.active{background:var(--selected);box-shadow:inset 3px 0 0 var(--blue)}
.conversation .label{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px;font-weight:550}
.conversation small{display:block;font-size:11px;font-weight:400;color:var(--muted);line-height:1.8;margin-top:2px}
.conversation[data-conversation^="stream:"] .avatar{font-size:0;background:#e8eeef;color:#5d7c85}
.conversation[data-conversation^="stream:"] .avatar::before{content:'#';font-size:24px;font-weight:500}
.conversation.active .avatar{background:#cfe3da;color:#267665}
.unread{background:var(--blue);color:#fff;border-radius:9px;min-width:20px;text-align:center;padding:0 5px;font-size:11px}
.list-empty{padding:18px;color:var(--muted);font-size:13px}
.chat{min-width:0;min-height:0;background:var(--surface)}
#empty-view{height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:28px;text-align:center}
#empty-view::before{content:'';width:46px;height:46px;margin-bottom:12px;background:#d4e7df;border-radius:13px;box-shadow:inset -20px -20px 0 #bdd8cc;clip-path:polygon(0 0,44% 0,44% 44%,56% 44%,56% 0,100% 0,100% 44%,56% 44%,56% 56%,100% 56%,100% 100%,56% 100%,56% 56%,44% 56%,44% 100%,0 100%,0 56%,44% 56%,44% 44%,0 44%)}
#empty-view h1{font-size:26px;font-weight:600;letter-spacing:.04em}
#empty-view p{font-size:14px;color:var(--muted);line-height:1.9;max-width:30em}
#conversation-view{height:100%;display:flex;flex-direction:column;min-height:0}
.chat-header{height:76px;min-height:76px;display:flex;align-items:center;gap:12px;padding:14px 28px;background:#fff;border-bottom:1px solid var(--line)}
.chat-heading{min-width:0;flex:1}
.chat-heading h1{font-size:17px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chat-heading p{font-size:12px;color:var(--muted);margin-top:2px}
#back{display:none;border:0;background:none;font-size:25px;padding:0 7px}
#search-toggle{font-size:12px;padding:6px 12px}
#search-form{padding:10px 28px;display:flex;gap:8px;background:#fff;border-bottom:1px solid var(--line)}
#search-input{flex:1}
#topic-bar{display:flex;gap:10px;align-items:center;padding:9px 28px;background:#fff;border-bottom:1px solid var(--line);font-size:12px;color:var(--muted)}
#topic-select{padding:4px 9px;max-width:70%;font-size:12px;border-color:transparent;background:var(--surface);color:var(--ink)}
#topic-count{color:var(--muted);margin-left:auto;font-size:11px}
#message-scroll{overflow-y:auto;flex:1;min-height:0;padding:24px 30px;background:var(--surface);scrollbar-width:thin;overscroll-behavior:contain}
#messages{display:flex;flex-direction:column;gap:22px;width:100%;max-width:880px;margin:auto}
.message{max-width:min(88%,640px);align-self:flex-start;min-width:100px}
.message.own{align-self:flex-end}
.message-meta{display:flex;gap:8px;align-items:center;margin-bottom:7px;color:var(--muted);font-size:11px;flex-wrap:wrap}
.message.own .message-meta{justify-content:flex-end}
.message-author{font-weight:600;color:#455f65;font-size:12px}
.topic-chip{font-size:10px;line-height:1.7;padding:1px 6px;border-radius:4px;border:1px solid #d7e4df;background:#eef4f1;color:#47776c}
.bubble{background:#fff;border:1px solid var(--line);border-radius:12px 12px 12px 4px;padding:12px 16px;overflow-wrap:anywhere;font-size:15px;line-height:1.8}
.message.own .bubble{background:#e3f0eb;border-color:#d3e5db;border-radius:12px 12px 4px 12px}
.bubble p{margin:0 0 8px}.bubble p:last-child{margin:0}
.bubble pre{max-width:100%;overflow:auto;font-size:12px;padding:12px;background:#edf2f0;border-radius:6px}
.bubble code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:12px}
.bubble img{max-width:100%;height:auto;max-height:300px;border-radius:6px}
.bubble blockquote{border-left:3px solid #9bbcac;margin:8px 0;padding-left:12px;color:var(--muted)}
.bubble table{display:block;overflow-x:auto;border-collapse:collapse;max-width:100%}
.bubble td,.bubble th{border:1px solid #cadbd4;padding:5px 8px}
.bubble ul,.bubble ol{padding-left:22px;margin:4px 0}
.bubble a[download]{display:inline-block;border:1px solid #c8dcd2;background:#ffffff90;border-radius:7px;padding:7px 11px;font-size:13px;max-width:100%;text-decoration:none}
.bubble a[download]::before{content:'↓';display:inline-block;margin-right:8px;font-size:17px;line-height:1;font-weight:600}
#history-status{color:var(--muted);font-size:13px;text-align:center;padding:18px;line-height:1.8}
#history-status:empty{display:none}
#older{display:block;margin:0 auto 22px;font-size:12px;background:#fff}
#composer{background:#fff;border-top:1px solid var(--line);padding:16px 28px 18px}
#compose-topic-row{display:flex;gap:8px;align-items:center;margin-bottom:12px;font-size:11px;color:var(--muted)}
#compose-topic{padding:3px 8px;font-size:12px;max-width:220px;flex:1;border:0;background:var(--surface);border-radius:5px}
#message-input{display:block;width:100%;resize:vertical;border:1px solid var(--line);background:#fbfcfc;padding:11px 14px;min-height:68px;max-height:150px;border-radius:10px;font-size:14px;line-height:1.7}
#message-input:focus{outline:2px solid #76ab9d;outline-offset:1px}
.composer-actions{display:flex;align-items:center;gap:12px;margin-top:10px}
.attachment-button{border:0;background:transparent;border-radius:5px;cursor:pointer;color:var(--muted);font-size:12px;display:flex;align-items:center;gap:7px;padding:5px 0}
.attachment-button:hover{color:var(--blue)}
.attachment-button::before{content:'';display:inline-block;width:14px;height:14px;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='none' stroke='black' stroke-width='1.8' stroke-linecap='round' d='m8 14 7-7a3 3 0 0 1 4 4L9 21a5 5 0 0 1-7-7L14 2a3 3 0 0 1 4 4L6 18'/%3E%3C/svg%3E") center/contain no-repeat;background:currentColor}
.composer-actions #send{margin-left:auto;background:var(--blue);border-color:var(--blue);color:#fff;font-size:12px;min-width:72px;padding:6px 15px;font-weight:550}
.composer-actions #send:hover{background:#1b6057}
#send-status{font-size:12px;color:var(--muted);flex:1;overflow-wrap:anywhere}
#attachment-list{font-size:12px;color:var(--blue)}
#attachment-list:not(:empty){padding:0 0 10px}
#tasks{position:fixed;top:64px;right:0;bottom:0;width:360px;max-width:100%;background:#fff;border-left:1px solid var(--line);padding:24px;overflow:auto;z-index:5;scrollbar-width:thin}
.drawer-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer-heading h2{font-size:19px;font-weight:600}
.drawer-heading button{border:0;color:var(--muted);font-size:19px;background:none;padding:4px 7px}
#tasks>.muted{margin:10px 0 20px;font-size:12px;line-height:1.8}
#tasks>.muted:last-child{margin-top:0;padding-top:16px;border-top:1px solid var(--line)}
#tasks-refresh{background:#fff;color:var(--blue);font-size:12px;padding:5px 10px}
#task-status{margin:20px 0 10px;color:var(--muted);font-size:12px}
.task{border-top:1px solid var(--line);padding:20px 0 22px;overflow-wrap:anywhere}
.task h3{font-size:16px;font-weight:600;line-height:1.6;margin:10px 0}
.task .meta{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:11px}
.task-state{background:var(--selected);color:#1c6c5a;border-radius:4px;padding:2px 7px;font-weight:550}
.task[data-state=blocked] .task-state{background:#fff0e8;color:#9b501c}
.task[data-state=pending_review] .task-state{background:#eeeaf8;color:#6a5193}
.task[data-state=todo] .task-state,.task[data-state=draft] .task-state{background:#edf0f2;color:#566971}
.task .owner{color:var(--muted);font-size:12px;margin-bottom:10px}
.task .note{white-space:pre-wrap;font-size:13px;line-height:1.8}
.task details{font-size:12px;margin-top:12px;color:var(--muted)}
.task details p{margin-top:8px;white-space:pre-wrap}
.task summary{color:var(--blue);cursor:pointer}
::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-thumb{background:#bccbc8;border-radius:6px}
@media(min-width:1100px){body.tools-open #workspace{margin-right:360px}}
@media(max-width:1099px) and (min-width:641px){#workspace{grid-template-columns:248px minmax(0,1fr)}#tasks{box-shadow:-12px 0 40px #22343b1a}}
@media(max-width:640px){.team-header{height:56px;padding:0 14px;gap:12px}.wordmark{font-size:16px;gap:8px}.wordmark::before{width:20px;height:20px}.subtitle{display:none}#connection{font-size:10px;gap:4px;max-width:74px}#tasks-toggle{font-size:12px;padding:6px 9px}#tasks-toggle::before{display:none}#login-view{min-height:calc(100dvh - 56px);padding:22px}.login-box{padding:30px}.login-box h1{font-size:23px}#workspace{height:calc(100dvh - 56px);grid-template-columns:1fr}.chat{display:none}.sidebar{border:0}body.in-chat .sidebar{display:none}body.in-chat .chat{display:block}#back{display:block}.chat-header{padding:12px;height:68px;min-height:68px;gap:9px}.chat-header .avatar{width:32px;height:32px;font-size:18px;border-radius:10px}.chat-heading h1{font-size:16px}.chat-heading p{font-size:11px}#message-scroll{padding:18px 14px}.message{max-width:94%}.bubble{font-size:14px;padding:10px 12px}#tasks{top:56px;width:100%;padding:22px}#search-form{padding:10px 12px}#search-input{width:0}#topic-bar{padding:8px 14px}#composer{padding:12px 14px}#message-input{min-height:60px}#empty-view h1{font-size:22px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
.bubble.folded{max-height:220px;overflow:hidden}.message-expand{font-size:12px;margin-top:5px;padding:2px 7px;border:0;background:transparent}