/* AI 工作台 chat polish: welcome prompts, image attachments, session overview and draft cards.
   Loaded last; every rule is scoped to the workbench or to dialogs it opens. */
#collaborationView{--cc-radius:14px;--cc-soft:color-mix(in srgb,var(--text) 4%,transparent);--cc-soft-2:color-mix(in srgb,var(--text) 7%,transparent);--cc-border:color-mix(in srgb,var(--text) 10%,transparent);--cc-sans:ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI Variable","Segoe UI","PingFang SC","Hiragino Sans GB","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei UI","Microsoft YaHei",sans-serif;--cc-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;--cc-ink:#1d1d1f;font-family:var(--cc-sans);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}

/* ---------- Welcome: title, suggestions, then the composer ---------- */
#collaborationView .ai-home.is-empty .ai-messages{padding-bottom:0}
#collaborationView .ai-welcome{display:flex;flex-direction:column;align-items:center}
#collaborationView .ai-welcome h1{text-align:center;margin:0 auto 10px}
#collaborationView .ai-welcome>p{text-align:center;margin:0 auto 22px;color:var(--muted)}
#collaborationView .ai-key-banner{align-self:center;display:flex;align-items:center;gap:10px;margin:-6px auto 18px;padding:7px 8px 7px 14px;border-radius:999px;background:color-mix(in srgb,var(--amber) 14%,transparent);color:color-mix(in srgb,var(--amber) 55%,var(--text));font-size:12.5px}
#collaborationView .ai-key-banner[hidden]{display:none}
#collaborationView .ai-key-banner button{border:0;border-radius:999px;padding:4px 12px;background:var(--panel);color:var(--text);font:inherit;font-weight:600;cursor:pointer;box-shadow:0 1px 2px #0001}
#collaborationView .ai-key-banner button:hover{background:var(--bg)}
#collaborationView .ai-welcome-prompts{width:100%;max-width:760px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:4px auto 4px}
#collaborationView .ai-welcome-prompt{display:flex;flex-direction:column;align-items:flex-start;gap:3px;min-width:0;padding:11px 14px;border:1px solid var(--cc-border);border-radius:var(--cc-radius);background:transparent;color:var(--text);font:inherit;text-align:left;cursor:pointer;transition:background .15s,border-color .15s,transform .15s}
#collaborationView .ai-welcome-prompt:hover{background:var(--cc-soft);border-color:color-mix(in srgb,var(--text) 16%,transparent)}
#collaborationView .ai-welcome-prompt:active{transform:scale(.99)}
#collaborationView .ai-welcome-prompt:focus-visible{outline:2px solid var(--blue);outline-offset:1px}
#collaborationView .ai-welcome-prompt b{font-size:13px;font-weight:600;line-height:1.4}
#collaborationView .ai-welcome-prompt small{font-size:11.5px;line-height:1.45;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}
@media(max-width:760px){#collaborationView .ai-welcome-prompts{grid-template-columns:repeat(2,minmax(0,1fr))}}

/* ---------- Conversation ---------- */
#collaborationView .ai-home .ai-messages{gap:10px}
#collaborationView .ai-home .ai-role-assistant{color:var(--text)}
#collaborationView .ai-home .ai-role-assistant .ai-speaker{margin-bottom:10px}
#collaborationView .ai-user-bubble{background:var(--cc-soft-2);padding:10px 16px;border-radius:18px;line-height:1.7}
#collaborationView .ai-role-user.is-own .ai-user-bubble{border-bottom-right-radius:6px}
#collaborationView .ai-role-user:not(.is-own) .ai-user-bubble{border-bottom-left-radius:6px}
#collaborationView .ai-role-error{color:var(--text)}
#collaborationView .ai-role-error>div:not(.ai-speaker){padding:10px 14px;border-radius:12px;background:color-mix(in srgb,var(--red) 9%,transparent);color:color-mix(in srgb,var(--red) 70%,var(--text));font-size:13px;line-height:1.6}
#collaborationView .ai-role-error>.button{margin:10px 8px 0 0}

/* Message attachments: images sit above the text bubble, like any modern chat. */
#collaborationView .collab-message-media{display:flex;flex-direction:column;gap:6px;margin:0 0 6px}
#collaborationView .ai-role-user.is-own .collab-message-media{align-items:flex-end}
#collaborationView .collab-message-images{display:grid;gap:8px;margin:12px 0 4px;border-radius:12px;overflow:hidden;width:fit-content;max-width:min(560px,100%)}
#collaborationView .collab-message-images.count-1{grid-template-columns:1fr}
#collaborationView .collab-message-images.count-2,#collaborationView .collab-message-images.count-4{grid-template-columns:repeat(2,minmax(0,180px))}
#collaborationView .collab-message-images.count-3{grid-template-columns:repeat(3,minmax(0,136px))}
#collaborationView .collab-message-images .collab-image-thumb{border-radius:0;border:0}
#collaborationView .collab-message-images.count-1 .collab-image-thumb{width:auto;max-width:min(560px,100%)}
#collaborationView .collab-message-images.count-1 .collab-image-thumb img{width:auto;max-width:min(560px,100%);height:auto;max-height:360px;aspect-ratio:auto;object-fit:contain;border-radius:12px}
#collaborationView .collab-message-images:not(.count-1) .collab-image-thumb img{aspect-ratio:1;width:100%;height:auto}
#collaborationView .collab-message-files{display:flex;flex-wrap:wrap;gap:6px;justify-content:inherit}
.collab-image-thumb{position:relative;display:block;padding:0;margin:0;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--bg);cursor:zoom-in;line-height:0}
.collab-image-thumb img{display:block;width:100%;height:100%;object-fit:cover;transition:transform .2s,opacity .2s}
.collab-image-thumb:hover img{opacity:.92}
.collab-image-thumb:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.collab-image-thumb.is-broken{min-width:120px;min-height:80px;cursor:default}
.collab-image-thumb.is-broken::after{content:'图片无法加载';position:absolute;inset:0;display:grid;place-items:center;font-size:11px;color:var(--muted);line-height:1.4}
.collab-image-thumb.is-broken img{display:none}
.collab-file-card{display:inline-flex;align-items:center;gap:10px;max-width:280px;padding:8px 12px 8px 8px;border:1px solid var(--line);border-radius:12px;background:var(--panel);color:var(--text);text-decoration:none}
.collab-file-card:hover{background:var(--bg)}
.collab-file-icon{display:grid;place-items:center;width:32px;height:32px;border-radius:8px;background:var(--blue-soft);color:var(--blue);flex:none}
.collab-file-icon svg{width:16px;height:16px}
.collab-file-copy{display:flex;flex-direction:column;min-width:0}
.collab-file-copy b{font-size:12.5px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.collab-file-copy small{font-size:11px;color:var(--muted)}

/* ---------- Composer ---------- */
#collaborationView .ai-home .ai-compose-box{border-radius:22px;border-color:var(--cc-border);box-shadow:0 1px 2px #0000000a,0 6px 24px #0000000a;transition:border-color .15s,box-shadow .15s}
#collaborationView .ai-home .ai-compose-box:focus-within{border-color:color-mix(in srgb,var(--text) 22%,transparent);box-shadow:0 1px 2px #0000000d,0 8px 28px #00000012}
#collaborationView .collab-composer-context{gap:8px;padding:8px 10px 2px;align-items:center}
#collaborationView .collab-attach-tile{position:relative;display:block;width:64px;height:64px;flex:none;border-radius:12px;background:var(--bg)}
#collaborationView .collab-attach-tile .collab-image-thumb{width:100%;height:100%;border-radius:12px}
#collaborationView .collab-attach-tile>img{width:100%;height:100%;object-fit:cover;border-radius:12px;opacity:.45}
#collaborationView .collab-attach-tile>small{position:absolute;inset:6px;font-size:10px;line-height:1.3;color:var(--muted);overflow:hidden;word-break:break-all}
#collaborationView .collab-attach-tile.is-uploading{border:1px solid var(--line)}
#collaborationView .collab-attach-spinner{position:absolute;left:50%;top:50%;width:18px;height:18px;margin:-9px 0 0 -9px;border:2px solid color-mix(in srgb,var(--text) 18%,transparent);border-top-color:var(--text);border-radius:50%;animation:cc-spin .8s linear infinite}
#collaborationView .collab-attach-remove{position:absolute;top:-6px;right:-6px;display:grid;place-items:center;width:20px;height:20px;padding:0;border:2px solid var(--panel);border-radius:50%;background:var(--text);color:var(--panel);cursor:pointer;opacity:0;transition:opacity .15s}
#collaborationView .collab-attach-tile:hover .collab-attach-remove,#collaborationView .collab-attach-remove:focus-visible{opacity:1}
#collaborationView .collab-attach-remove svg{width:11px;height:11px;stroke-width:2.4}
@media(hover:none){#collaborationView .collab-attach-remove{opacity:1}}
#collaborationView .ai-compose-box.is-dragging{border-style:dashed;border-color:var(--blue);background:color-mix(in srgb,var(--blue) 4%,var(--panel))}
#collaborationView .ai-compose-box.is-dragging::after{content:'松开即可上传图片或文件';position:absolute;inset:0;display:grid;place-items:center;border-radius:inherit;background:color-mix(in srgb,var(--panel) 82%,transparent);color:var(--blue);font-size:13px;font-weight:600;pointer-events:none;z-index:5}
@keyframes cc-spin{to{transform:rotate(360deg)}}

/* ---------- Draft / action cards ---------- */
#collaborationView .ai-draft{display:grid;grid-template-columns:minmax(0,1fr) auto;column-gap:12px;align-items:center;padding:12px 14px;border:1px solid var(--cc-border);border-radius:var(--cc-radius);background:var(--panel);box-shadow:none;max-width:100%}
#collaborationView .ai-draft>strong{grid-column:1;grid-row:1;font-size:13px;font-weight:600;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
#collaborationView .ai-draft>small{grid-column:2;grid-row:1;margin:0;justify-self:end;padding:2px 8px;border-radius:999px;background:var(--cc-soft-2);color:var(--muted);font-size:11px;white-space:nowrap}
#collaborationView .ai-draft>p,#collaborationView .ai-draft>ol,#collaborationView .ai-draft>ul,#collaborationView .ai-draft>.assistant-notification-editor{grid-column:1/-1}
#collaborationView .ai-draft>details{grid-column:1;margin:0}
#collaborationView .ai-draft>details summary{margin-top:8px;font-size:12px;color:var(--muted);list-style-position:inside}
#collaborationView .ai-draft>details[open]{grid-column:1/-1}
#collaborationView .ai-draft>.button{grid-column:2;margin-top:8px;justify-self:end}
#collaborationView .ai-draft-auto{border-style:solid;opacity:1;background:transparent}
#collaborationView .ai-draft-auto>strong{white-space:normal;font-weight:500;color:var(--muted)}

/* ---------- Session header (normal sessions get a title bar too) ---------- */
#collaborationView .collaboration-context b#collabTitle{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block;max-width:60vw}

/* ---------- Session overview panel ---------- */
.collab-overview-head{gap:8px;padding:0 10px 0 18px}
.collab-overview-head>b{font-size:13px;font-weight:600;color:var(--text)}
.collab-overview-body{padding:10px 12px 28px}
.collab-overview-section{margin:0 0 18px}
.collab-overview-section h4{display:flex;align-items:center;gap:6px;margin:2px 10px 6px;font-size:11px;font-weight:600;letter-spacing:.04em;color:var(--muted)}
.collab-overview-section h4 em{font-style:normal;font-weight:500;color:var(--muted-2);font-variant-numeric:tabular-nums}
.collab-overview-item,.collab-overview-run{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:10px;width:100%;padding:8px;border:0;border-radius:10px;background:transparent;color:var(--text);font:inherit;text-align:left;cursor:pointer}
.collab-overview-item:hover,.collab-overview-run:hover{background:var(--hover)}
.collab-overview-item:focus-visible,.collab-overview-run:focus-visible{outline:2px solid var(--blue);outline-offset:-2px}
.collab-overview-icon{display:grid;place-items:center;width:28px;height:28px;border-radius:8px;background:var(--bg);color:var(--muted)}
.collab-overview-icon svg{width:15px;height:15px}
.collab-overview-icon.kind-issue{color:var(--blue);background:var(--blue-soft)}
.collab-overview-icon.kind-sop{color:var(--purple);background:color-mix(in srgb,var(--purple) 12%,transparent)}
.collab-overview-icon.kind-agent{color:#0f9b6c;background:color-mix(in srgb,var(--green) 14%,transparent)}
.collab-overview-copy{display:flex;flex-direction:column;gap:2px;min-width:0}
.collab-overview-copy b{font-size:12.5px;font-weight:600;line-height:1.45;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.collab-overview-copy small{font-size:11px;line-height:1.4;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.collab-overview-pill{padding:2px 8px;border-radius:999px;background:var(--cc-soft-2,var(--hover));color:var(--muted);font-size:11px;white-space:nowrap}
.collab-overview-pill.status-in_progress,.collab-overview-pill.status-in_review{background:var(--blue-soft);color:var(--blue)}
.collab-overview-pill.status-done{background:color-mix(in srgb,var(--green) 14%,transparent);color:#0f9b6c}
.collab-overview-pill.status-blocked{background:color-mix(in srgb,var(--red) 12%,transparent);color:var(--red)}
.collab-overview-pill[hidden]{display:none}
.collab-sop{margin:0 4px 2px}
.collab-sop-head{display:grid;grid-template-columns:14px minmax(0,1fr) auto;align-items:center;gap:8px;width:100%;padding:8px 8px;border:0;border-radius:10px;background:transparent;color:inherit;font:inherit;text-align:left;cursor:pointer}
.collab-sop-head:hover{background:var(--hover)}
.collab-sop-head:focus-visible{outline:2px solid var(--blue);outline-offset:-2px}
.collab-sop-chevron{display:grid;place-items:center;color:var(--muted);transition:transform .15s}
.collab-sop-chevron svg{width:14px;height:14px}
.collab-sop.open .collab-sop-chevron{transform:rotate(90deg)}
.collab-sop-copy{display:flex;flex-direction:column;gap:1px;min-width:0}
.collab-sop-copy b{font-size:13px;font-weight:600;line-height:1.35;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.collab-sop-copy small{font-size:12px;line-height:1.35;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.collab-sop.needs-you .collab-sop-copy small{color:color-mix(in srgb,var(--amber) 72%,var(--text))}
.collab-sop-count{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.collab-sop-nodes{margin:2px 6px 8px 18px;padding:2px 0 2px 10px;border-left:1px solid var(--line)}
.collab-sop-node{display:flex;align-items:center;gap:8px;width:100%;padding:6px 8px;border:0;border-radius:8px;background:transparent;color:inherit;font:inherit;text-align:left;cursor:pointer}
.collab-sop-node:hover{background:var(--hover)}
.collab-sop-node:focus-visible{outline:2px solid var(--blue);outline-offset:-2px}
.collab-sop-node b{flex:1;min-width:0;font-size:13px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.collab-sop-node small{color:var(--muted);font-size:12px;white-space:nowrap}
.collab-side-row{display:flex;align-items:center;gap:10px;width:calc(100% - 8px);margin:0 4px;padding:6px 8px;border:0;border-radius:8px;background:transparent;color:inherit;font:inherit;text-align:left;cursor:pointer}
.collab-side-row:hover{background:var(--hover)}
.collab-side-row:focus-visible{outline:2px solid var(--blue);outline-offset:-2px}
.collab-side-mark{display:grid;place-items:center;width:28px;height:28px;flex:none;border-radius:8px;background:var(--cc-soft-2,var(--hover));color:var(--muted)}
.collab-side-mark svg{width:14px;height:14px}
.collab-side-mark.kind-slides,.collab-side-mark.kind-globe{color:var(--text)}
.collab-side-thumb{width:36px;height:36px;flex:none;object-fit:cover;border-radius:8px;background:var(--cc-soft-2,var(--hover))}
.collab-side-copy{display:flex;flex-direction:column;gap:1px;min-width:0}
.collab-side-copy b{font-size:13px;font-weight:600;line-height:1.35;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.collab-side-copy small{font-size:11.5px;line-height:1.35;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.collab-inline-file{margin:8px 6px;border:1px solid var(--line);background:var(--panel)}
.collab-inline-file:hover{background:var(--hover)}
.collab-overview-alert{display:flex;align-items:center;gap:8px;width:100%;margin:2px 0 14px;padding:10px 12px;border:0;border-radius:10px;background:color-mix(in srgb,var(--amber) 14%,transparent);color:color-mix(in srgb,var(--amber) 55%,var(--text));font:inherit;font-size:12.5px;font-weight:600;text-align:left;cursor:pointer}
.collab-overview-alert:hover{background:color-mix(in srgb,var(--amber) 20%,transparent)}
.collab-overview-alert span{flex:1}
.collab-overview-alert svg{width:15px;height:15px;flex:none}
#collaborationView .collab-overview{width:320px}
#collaborationView .collab-overview.is-node-page{width:480px}
.collab-node-page-head{display:flex;align-items:center;gap:8px;position:sticky;top:0;z-index:1;padding:8px 10px;background:var(--bg);border-bottom:1px solid var(--line)}
.collab-node-page-back{display:inline-flex;align-items:center;gap:2px;padding:4px 6px;border:0;border-radius:8px;background:transparent;color:var(--muted);font:inherit;font-size:12px;cursor:pointer}
.collab-node-page-back svg{width:14px;height:14px}
.collab-node-page-back:hover{background:var(--hover);color:var(--text)}
.collab-node-page-head b{flex:1;min-width:0;font-size:13px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.collab-node-page-head small{color:var(--muted);font-size:12px;white-space:nowrap}
.collab-node-page-task{margin:12px 12px 2px;padding:10px 12px;border-radius:12px;background:var(--cc-soft-2,var(--hover));font-size:13px;line-height:1.6}
.collab-node-transcript{padding:4px 8px 8px}
.collab-node-transcript .ai-message{max-width:none;margin:0}
.collab-node-transcript .ai-tool-line{font-size:12.5px}
.collab-node-transcript .ai-answer{font-size:13px;line-height:1.65}
.collab-overview-note{margin:12px 14px;color:var(--muted);font-size:12px}
#collaborationView .collab-overview-head{height:42px;padding:0 8px 0 14px}
#collaborationView .collab-overview-body{padding:8px 8px 20px}
.collab-overview-images{display:flex;flex-direction:column;gap:2px;padding:0}
.collab-output-row{display:flex;align-items:center;gap:8px;width:100%;padding:5px 6px;border:0;border-radius:8px;background:transparent;color:var(--text,#1c1c1c);font:inherit;font-size:13px;text-align:left;cursor:pointer}
.collab-output-row:hover{background:var(--hover)}
.collab-output-row img{width:22px;height:22px;flex:none;object-fit:cover;border-radius:4px;background:#eee}
.collab-overview-section .collab-file-card{display:flex;max-width:none;margin:4px 6px 0;border-color:var(--line)}

/* ---------- Lightbox ---------- */
.collab-lightbox{width:100vw;height:100dvh;max-width:none;max-height:none;margin:0;padding:0;border:0;background:transparent;color:#fff;overflow:hidden}
.collab-lightbox::backdrop{background:rgba(8,10,14,.86);backdrop-filter:blur(4px)}
.collab-lightbox[open]{display:flex;flex-direction:column}
.collab-lightbox-stage{flex:1;min-height:0;display:grid;place-items:center;padding:32px 32px 0;cursor:zoom-out}
.collab-lightbox-stage img{max-width:100%;max-height:calc(100dvh - 120px);object-fit:contain;border-radius:8px;box-shadow:0 12px 48px #0008;cursor:default;background:#fff1}
.collab-lightbox footer{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 24px 18px;font-size:12.5px;color:#fffc}
.collab-lightbox footer>span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:pre}
.collab-lightbox-tools{display:flex;gap:6px}
.collab-lightbox-btn{display:grid;place-items:center;width:34px;height:34px;padding:0;border:0;border-radius:50%;background:#ffffff1f;color:#fff;cursor:pointer;text-decoration:none}
.collab-lightbox-btn:hover{background:#ffffff38}
.collab-lightbox-btn svg{width:17px;height:17px}

/* ---------- Sidebar sessions ---------- */
.collaboration-sessions .collab-session-row{border-radius:8px}
.collaboration-sessions .collab-list-item{border-radius:8px}
#collabSessionSearch{display:block;box-sizing:border-box;width:calc(100% - 20px);margin:0 10px 10px;padding:8px 10px;border:1px solid var(--line);border-radius:10px;background:transparent;color:var(--text);font:inherit;font-size:13px}
#collabSessionSearch:focus{outline:none;border-color:color-mix(in srgb,var(--text) 28%,transparent)}
.sidebar-conversations{display:flex;flex-direction:column;flex:1;min-height:0}
.sidebar-conversations .collaboration-sessions{display:flex;flex-direction:column;flex:1;min-height:0;overflow:hidden}
.sidebar-conversations #collabSessions{max-height:none;flex:1;min-height:0}
.sidebar-conversations .collaboration-tasks{display:none}
.sidebar-conversations h3 .collab-task-actions{margin-left:auto}
/* Keep global business navigation alongside the embedded workbench, including
   narrow windows where the legacy shell otherwise hides the icon rail. */
body.chat-next-active .app-shell{grid-template-columns:var(--rail-w) minmax(0,1fr)!important}
body.chat-next-active .platform-rail{display:flex!important}
@media(max-width:1000px){
  body .platform-rail{display:flex!important}
  body .app-shell,body.no-sidebar .app-shell{grid-template-columns:var(--rail-w) minmax(0,1fr)!important}
  body.ai-assistant-open .app-shell,body.no-sidebar.ai-assistant-open .app-shell{grid-template-columns:var(--rail-w) minmax(0,1fr) var(--ai-panel-w,380px)!important}
  body.chat-next-active .app-shell{grid-template-columns:var(--rail-w) minmax(0,1fr)!important}
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