@layer teachsystem-features{.is-chat-page .workspace{display:flex;flex-direction:column;height:100dvh;overflow:hidden}.assistant-page,.is-chat-page .content{display:flex;flex:1;min-height:0}.assistant-page{width:100%;max-width:860px;margin-inline:auto;flex-direction:column;min-width:0}.assistant-history-heading,.assistant-page-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}.assistant-page-heading{padding:0 24px 12px}.assistant-heading-title{display:flex;align-items:center;flex:1;min-width:0;gap:4px}.assistant-heading-title h1,.assistant-heading-title h2,.assistant-history-heading h2{font-size:19px;font-weight:600;letter-spacing:-.025em;line-height:1.4;margin:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.assistant-heading-actions{display:flex;flex-shrink:0;gap:4px}.assistant-heading-actions button,.assistant-heading-title button,.assistant-history-heading button{display:grid;place-items:center;flex-shrink:0;width:40px;height:40px;border-radius:50%;color:var(--muted)}.assistant-heading-actions button:hover,.assistant-heading-title button:hover,.assistant-history-heading button:hover{color:var(--ink);background:var(--bg-soft)}.assistant-history-dialog[data-slot=dialog-content]{width:min(420px,calc(100vw - 32px));max-height:min(640px,85dvh);padding:20px 24px;gap:8px;grid-template-rows:auto minmax(0,1fr);border:1px solid var(--line);box-shadow:none}.assistant-history{display:flex;flex-direction:column;gap:16px;min-width:0;min-height:0;padding:0 8px 12px;margin-inline:-8px;overflow-y:auto}.assistant-history input{width:100%;background:transparent;border:0;border-bottom:1px solid var(--line);border-radius:0;padding:8px 0;font-size:14px}.assistant-history-tabs{display:flex;gap:18px;font-size:13px}.assistant-history-tabs button[aria-pressed=true]{color:var(--accent)}.assistant-history-list{display:grid;gap:4px}.assistant-history-row{display:flex;align-items:center;gap:4px;padding:7px 8px;margin-inline:-8px;border-radius:8px}.assistant-history-row.is-active{background:var(--accent-soft)}.assistant-history-select{display:grid;min-width:0;flex:1;gap:3px;text-align:left}.assistant-history-select strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px;font-weight:500}.assistant-history-empty,.assistant-history-select small{color:var(--muted);font-size:12px}.assistant-history-actions{display:flex;opacity:0}.assistant-history-row:focus-within .assistant-history-actions,.assistant-history-row:hover .assistant-history-actions{opacity:1}.assistant-history-actions button{padding:6px}.assistant-history-row form{width:100%;font-size:12px}.assistant-history-row form button{margin:8px 10px 0 0}.assistant-conversation-layout{display:flex;flex-direction:column;flex:1;min-width:0;min-height:0}.assistant-conversation{min-height:0;flex:1}.assistant-messages{display:flex;flex-direction:column;gap:24px;max-width:860px;margin-inline:auto;padding:24px}.assistant-message{position:relative;min-width:0;overflow-wrap:anywhere;font-size:15px;line-height:1.65}.assistant-message.is-user{align-self:flex-end;max-width:85%;display:flex;flex-direction:column;align-items:flex-end;gap:8px}.assistant-message.is-user .assistant-message-body{padding:8px 14px;background:var(--bg-soft);border-radius:18px}.assistant-message-body{position:relative;max-width:100%}.assistant-user-text{white-space:pre-wrap;margin:0}.assistant-message.is-assistant{width:100%}.assistant-message-body a{color:var(--ds-accent-ink);text-decoration:underline;text-underline-offset:3px}.assistant-copy{display:grid;place-items:center;width:28px;height:28px;margin-top:4px;color:var(--muted);opacity:0}.is-user .assistant-copy{position:absolute;right:100%;bottom:3px;margin:0 4px 0 0}.assistant-message:focus-within .assistant-copy,.assistant-message:hover .assistant-copy{opacity:1}.assistant-empty{text-align:center;padding:clamp(40px,12dvh,120px) 0 24px}.assistant-empty h2{margin:0 0 10px;font-size:26px;letter-spacing:-.035em}.assistant-empty p{color:var(--muted);font-size:14px}.assistant-suggestions{display:flex;flex-direction:column;align-items:center;gap:4px;margin-top:24px}.assistant-suggestions button{color:var(--ds-accent-ink);font-size:14px;line-height:1.5;padding:10px 12px;border-radius:8px}.assistant-suggestions button:hover{background:var(--bg-soft)}.assistant-context-suggestions{display:flex;flex-wrap:wrap;gap:4px 16px;margin-bottom:10px}.assistant-context-suggestions button{color:var(--ds-accent-ink);font-size:12px;padding-block:8px;text-align:left}.assistant-activity,.assistant-archive-notice{color:var(--muted);font-size:13px}.assistant-activity{display:flex;align-items:center;gap:8px}.assistant-activity svg{flex-shrink:0;color:var(--accent);animation:ds-spin 1.5s linear infinite}.assistant-compose-area{width:100%;max-width:860px;margin:0 auto;padding:12px 24px 20px}.assistant-composer{border:1px solid var(--line);border-radius:14px;padding:12px;background:var(--surface)}.assistant-composer:focus-within{border-color:var(--accent)}.assistant-composer textarea{display:block;width:100%;min-height:26px;max-height:160px;resize:none;border:0;border-radius:0;outline:none;background:transparent;box-shadow:none;padding:0;font:inherit;font-size:15px;line-height:1.55}.assistant-composer-actions{display:flex;align-items:center;gap:10px;margin-top:8px}.assistant-composer-actions small{color:var(--muted);font-size:11px}.assistant-composer-actions button{display:grid;place-items:center;width:34px;height:34px}.assistant-composer-actions .assistant-send{margin-left:auto;background:var(--accent-soft);color:var(--ds-accent-ink);border-radius:50%}.assistant-files{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px;padding-top:4px}.assistant-file-chip{display:flex;gap:6px;align-items:center;min-width:0;max-width:100%;font-size:12px;background:var(--bg-soft);padding:5px 8px;border-radius:6px}.assistant-file-chip span{max-width:170px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.assistant-file-link{display:inline-flex;align-items:center;max-width:260px;gap:6px;color:var(--ds-accent-ink);font-size:13px;padding:8px 10px;border:1px solid var(--line);border-radius:10px;text-decoration:none}.assistant-file-link span{min-width:0;overflow-wrap:anywhere}.assistant-file-link svg{flex-shrink:0}.assistant-message-attachments{display:flex;align-items:flex-start;flex-wrap:wrap;gap:8px;max-width:100%}.is-user .assistant-message-attachments{justify-content:flex-end}.assistant-message-attachments.has-multiple-images{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));width:min(480px,100%)}.has-multiple-images .assistant-file-link{grid-column:1/-1}.assistant-image-preview{display:block;max-width:min(320px,100%);border-radius:14px;overflow:hidden;cursor:zoom-in;line-height:0}.assistant-image-preview img{display:block;max-width:100%;max-height:340px;object-fit:contain}.has-multiple-images .assistant-image-preview{max-width:100%}.assistant-photo-draft{position:relative;flex:0 0 80px;width:80px;height:80px;border-radius:16px;background:var(--bg-soft)}.assistant-photo-preview{display:grid;place-items:center;width:100%;height:100%;border:1px solid var(--line);border-radius:inherit;overflow:hidden;cursor:zoom-in}.assistant-photo-preview img{width:100%;height:100%;object-fit:cover}.assistant-photo-remove{position:absolute;top:-4px;right:-4px;display:grid;place-items:center;width:26px;height:26px;border:2px solid var(--surface);border-radius:50%;color:white;background:var(--ink)}.assistant-photo-retry,.assistant-photo-status{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;border-radius:inherit;background:rgb(0 0 0/55%);color:white;font-size:11px}.assistant-photo-status{pointer-events:none}.assistant-file-status{display:inline-flex;align-items:center;gap:4px}.assistant-upload-spinner{animation:ds-spin .8s linear infinite}.assistant-image-dialog[data-slot=dialog-content]{width:calc(100vw - 32px);max-width:1200px;height:calc(100dvh - 32px);max-height:100dvh;grid-template-rows:auto minmax(0,1fr);gap:0;padding:0;border:0;border-radius:var(--ds-radius-large);background:var(--ink);color:white;box-shadow:none;overflow:hidden}.assistant-image-heading{display:flex;align-items:center;gap:4px;padding:12px 16px}.assistant-image-heading h2{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px;font-weight:500;color:inherit;margin:0}.assistant-image-heading button{display:grid;place-items:center;flex-shrink:0;width:44px;height:44px;border-radius:50%}.assistant-image-heading button:hover{background:rgb(255 255 255/12%)}.assistant-image-heading button:disabled{opacity:.4}.assistant-image-dialog :focus-visible{outline:2px solid var(--ds-accent-border);outline-offset:-3px}.assistant-image-stage{display:flex;align-items:center;justify-content:center;min-height:0;padding:8px 16px 16px;overflow:auto;overscroll-behavior:contain}.assistant-image-stage img{max-width:100%;max-height:100%;object-fit:contain}.assistant-image-stage.is-zoomed{display:block}.assistant-image-stage.is-zoomed img{display:block;width:auto;max-width:none;max-height:none;margin-inline:auto}.assistant-inline-error{display:flex;align-items:center;gap:12px;color:var(--danger);font-size:13px;padding:0 0 12px}.assistant-tool-details{color:var(--muted);font-size:12px;margin-block:8px}.assistant-tool-details summary{cursor:pointer}.assistant-tool-details pre{max-height:280px;overflow:auto;white-space:pre-wrap;overflow-wrap:anywhere;margin-block:8px;font-size:11px}.assistant-approval{border-block:1px solid var(--line);padding:16px 0;margin-block:16px}.assistant-approval strong{color:var(--ink);font-size:15px}.assistant-approval p{color:var(--muted);font-size:13px;margin-top:4px}.assistant-approval dl{margin:12px 0;font-size:13px}.assistant-approval dl>div{display:grid;grid-template-columns:minmax(90px,1fr) minmax(0,2fr);gap:12px;margin-block:7px}.assistant-approval dt{color:var(--muted)}.assistant-approval dd{margin:0;white-space:pre-wrap;overflow-wrap:anywhere}.assistant-approval-actions{display:flex;gap:8px}.assistant-approval-actions button{border-radius:8px;font-size:13px;padding:8px 12px}.assistant-approval-actions button:first-child{background:var(--accent-soft);color:var(--ds-accent-ink)}.assistant-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;min-height:260px;padding:24px;color:var(--muted);font-size:14px}.assistant-drawer[data-slot=dialog-content]{top:50%;left:50%;right:auto;bottom:auto;transform:none;translate:-50% -50%;width:min(1040px,calc(100vw - 64px));max-width:calc(100vw - 64px);height:min(900px,calc(100dvh - 64px));max-height:100dvh;border-radius:18px;border:1px solid var(--line);overflow:hidden;padding:0;gap:0;grid-template-rows:auto minmax(0,1fr);box-shadow:none;animation:none}.assistant-history-page-link{margin-top:auto;padding-top:12px;color:var(--ds-accent-ink);font-size:13px}.assistant-drawer-header{display:flex;align-items:center;gap:6px;padding:16px 20px;border-bottom:1px solid var(--line)}.assistant-drawer-header>h2{flex:1;margin:0;font-size:18px}.assistant-drawer .assistant-history{padding:20px 24px;margin:0}.assistant-drawer button:disabled,.assistant-history-dialog button:disabled,.assistant-page button:disabled{opacity:.45;cursor:not-allowed}.assistant-drawer button:focus-visible,.assistant-history-dialog button:focus-visible,.assistant-launcher:focus-visible,.assistant-page button:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.assistant-launcher{position:fixed;right:24px;bottom:max(24px,env(safe-area-inset-bottom));z-index:40;display:inline-flex;align-items:center;gap:8px;min-height:48px;padding:12px 18px;border-radius:var(--ds-pill);background:var(--ds-accent-ink);color:white;font-size:14px;font-weight:500}.assistant-launcher:hover{background:var(--ink)}}@layer teachsystem-responsive{@media (max-width:820px){.assistant-drawer[data-slot=dialog-content]{top:0;left:0;translate:none;width:100vw;max-width:100vw;height:100dvh;border:0;border-radius:0}.assistant-launcher{right:16px;bottom:calc(96px + env(safe-area-inset-bottom))}}@media (max-width:767px){.assistant-image-dialog[data-slot=dialog-content]{width:100vw;height:100dvh;border-radius:0}.assistant-page-heading{padding:0 8px 8px}.assistant-copy,.assistant-history-actions{opacity:1}.assistant-messages{padding:20px 12px;gap:22px}.assistant-compose-area{padding:8px 8px max(12px,env(safe-area-inset-bottom))}.assistant-composer-actions small{display:none}.assistant-composer textarea{font-size:16px}.assistant-drawer-header{padding:12px}}@media (prefers-reduced-motion:reduce){.assistant-activity svg,.assistant-upload-spinner{animation:none}}}.learner-assistant-context{display:flex;align-items:center;gap:14px;padding:12px 24px;font-size:13px;color:var(--ds-muted);border-bottom:1px solid var(--ds-line)}.learner-assistant-context select{flex:1;min-width:0;padding:8px 0;border:0;background:transparent;color:var(--ds-ink)}.learner-chat-history{width:min(320px,calc(100vw - 32px));max-height:50vh;overflow-y:auto}.learner-chat-history-title{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.learner-chat-history-empty{padding:12px;color:var(--ds-muted);font-size:14px}