:root{color-scheme:light;--ink:#182e29;--muted:#5f7069;--paper:#f5f3ed;--surface:#fffef9;--line:#d7ded5;--accent:#256d51}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Segoe UI","Noto Sans",Arial,sans-serif;font-size:16px}main{max-width:920px;margin:auto;padding:0 28px;min-height:100dvh;display:flex;flex-direction:column}header{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:88px;border-bottom:1px solid var(--line)}header strong{font-family:Georgia,serif;font-size:32px;letter-spacing:-1px}.subtitle{display:block;color:var(--muted);font-size:12px;margin-top:3px}#controls{display:flex;align-items:center;gap:8px}#controls[hidden],[hidden]{display:none!important}button,.attach{font:inherit;cursor:pointer;min-height:44px;border-radius:8px;padding:10px 18px;border:1px solid transparent;background:var(--accent);color:white;font-weight:600}button:hover{filter:brightness(.93)}button:disabled{opacity:.55;cursor:wait}.quiet,.attach{background:transparent;color:var(--ink);border-color:var(--line)}.quiet{font-size:13px;padding:8px 12px}input,textarea{font:inherit;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:13px;width:100%}textarea{resize:vertical;min-height:88px;max-height:240px}button:focus-visible,input:focus-visible,textarea:focus-visible,.attach:focus-within{outline:3px solid #8eb7a2;outline-offset:3px}label{display:block;margin:16px 0 8px;font-size:14px;font-weight:600}.login{max-width:460px;margin:10vh 0 8vh}h1{font-family:Georgia,"Noto Serif",serif;font-weight:400;font-size:clamp(32px,6vw,48px);line-height:1.13;letter-spacing:-1px;margin:16px 0}p{line-height:1.6}form button{margin-top:12px}#loginForm button{width:100%}.eyebrow{font-size:11px;letter-spacing:2px;font-weight:700}.muted,.footnote{font-size:13px;color:var(--muted)}#chatPanel{flex:1;display:flex;flex-direction:column}#messages{padding:24px 0;min-height:36vh}#empty{padding:28px 0 40px}#empty h1{font-size:36px}.message{padding:18px 20px;margin-bottom:16px;white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.65;border-radius:10px;background:var(--surface);border:1px solid var(--line)}.message.user{margin-left:12%;background:#e8eee5}.message.assistant{margin-right:6%}.message .role{display:block;font-size:11px;text-transform:uppercase;letter-spacing:1px;font-weight:700;color:var(--muted);margin-bottom:7px}#chatForm{position:sticky;bottom:0;background:var(--paper);padding:10px 0 12px;margin-top:auto}.composer{display:flex;align-items:center;gap:12px}.composer .attach{display:inline-flex;align-items:center;margin:10px 0 0;font-size:14px;font-weight:500}.composer button{margin-left:auto}#busy{font-size:13px;color:var(--muted)}.footnote{font-size:11px;line-height:1.4;margin:10px 0 0}#attachments{display:flex;flex-wrap:wrap;gap:6px;padding:0 0 8px}.chip{font-size:12px;background:#e8eee5;padding:5px 8px;border-radius:5px}#countdown{font-size:11px;color:var(--muted)}#settings{max-width:540px;padding:24px 0}#notice{color:#9e352e;white-space:pre-wrap;margin:12px 0}footer{font-size:11px;color:var(--muted);padding:16px 0;margin-top:auto}.sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(max-width:600px){main{padding:0 16px}header{min-height:78px}header strong{font-size:28px}.subtitle{font-size:10px}#controls{gap:5px;flex-wrap:wrap;justify-content:flex-end}#countdown{width:100%;text-align:right}.quiet{padding:7px 9px}.login{margin-top:9vh}.message{padding:14px}.message.user{margin-left:6%}.message.assistant{margin-right:0}#empty h1{font-size:30px}.composer{gap:8px}.footnote{font-size:10px}}

/* Operate surface: Lucy's existing neutral paper/sage palette. */
main{max-width:1320px}main>section,#controls{min-width:0}select{font:inherit;min-height:44px;width:100%;background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:8px;padding:10px}input[type=checkbox]{width:auto;accent-color:var(--accent)}.check{display:flex;align-items:center;gap:10px;min-height:44px}
#tabs{display:flex;gap:8px;flex-wrap:wrap;padding:16px 0}#tabs button:not(.active){background:transparent;color:var(--ink);border-color:var(--line)}
.section-head{display:flex;justify-content:space-between;gap:16px;align-items:center;margin:24px 0}.section-head h1{margin:8px 0}.section-head p{margin:0}.transfer-grid{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:20px;align-items:start}.transfer-section{min-width:0;padding:22px;background:var(--surface);border:1px solid var(--line);border-radius:10px}.file-toolbar,.clipboard-actions,.new-folder-form>div{display:flex;gap:8px;flex-wrap:wrap}.new-folder-form{margin-top:16px}#breadcrumbs{display:flex;gap:4px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:12px;margin-top:16px}.breadcrumb{max-width:100%;overflow-wrap:anywhere;min-width:44px}.breadcrumb[aria-current=page]{font-weight:700}.file-list-head{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:12px}.view-switch{display:flex;gap:4px}.view-switch [aria-pressed=true]{background:var(--paper)}
.selection-toolbar{display:flex;align-items:center;gap:8px 14px;flex-wrap:wrap;margin:12px 0}.select-all{display:flex;align-items:center;gap:4px;min-height:44px;margin:0;font-weight:500}.select-all input,.file-select{min-width:44px;min-height:44px;width:44px;height:44px;flex:none;margin:0;padding:0;cursor:pointer;accent-color:var(--accent)}
.dropzone{border:1px dashed var(--line);padding:12px;border-radius:8px;margin-bottom:12px}.dropzone p{margin:0;font-size:13px}.dragging{outline:3px dashed var(--accent);outline-offset:4px}#storageFiles{min-width:0}.file-row{display:grid;grid-template-columns:44px minmax(0,1fr) 65px 106px 66px;gap:8px;align-items:center;border-bottom:1px solid var(--line);padding:8px 0;min-width:0}.file-name{grid-column:2;grid-row:1;min-height:44px;min-width:0;display:flex;align-items:center;text-align:left;overflow-wrap:anywhere;color:var(--ink);text-decoration:none;background:transparent;border:0;padding:8px;font:inherit}.file-name:hover{text-decoration:underline}.folder-row .file-name{grid-column:1/3;font-weight:600}.file-row>span{grid-column:3;grid-row:1;font-variant-numeric:tabular-nums}.file-row>button.quiet{grid-column:5;grid-row:1;min-width:44px;padding:8px}.file-select{grid-column:1;grid-row:1}.folder-zip{grid-column:4;grid-row:1;min-height:44px;min-width:44px;display:flex;align-items:center;justify-content:center;text-decoration:none;border:1px solid var(--line);border-radius:8px;padding:8px;text-align:center}.folder-zip:focus-visible,.file-name:focus-visible{outline:3px solid #8eb7a2;outline-offset:3px}.folder-empty{padding:24px 8px;text-align:center}.storage-policy{border-top:1px solid var(--line);padding-top:16px}.upload-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px;background:var(--paper);border-radius:8px;margin-top:10px;padding:12px}.upload-row>span,.upload-row>progress{grid-column:1;overflow-wrap:anywhere;max-width:100%}.upload-row>progress{width:100%}.upload-row>button{grid-column:2;grid-row:1/4}
#storageFiles.grid-view{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(240px,100%),1fr));gap:12px}.grid-view .file-row{grid-template-columns:44px minmax(0,1fr) 106px 66px;border:1px solid var(--line);border-radius:8px;padding:12px;gap:4px}.grid-view .file-name{grid-column:2/5;grid-row:1}.grid-view .folder-row .file-name{grid-column:1/5}.grid-view .file-row>span{grid-column:1/3;grid-row:2}.grid-view .file-row>button.quiet{grid-column:4;grid-row:2}.grid-view .folder-zip{grid-column:3;grid-row:2}.grid-view .folder-empty{grid-column:1/-1}
@media(max-width:1050px){.transfer-grid{grid-template-columns:minmax(0,1fr)}}
@media(max-width:700px){.transfer-section{padding:16px}.file-toolbar button{flex:1 1 auto;padding:10px 12px}.file-row{grid-template-columns:44px minmax(0,1fr) 106px 66px;gap:4px}.file-name{grid-column:2/5;grid-row:1}.folder-row .file-name{grid-column:1/5}.file-row>span{grid-column:2/4;grid-row:2}.folder-row>span{grid-column:1/3}.file-row>button.quiet{grid-column:4;grid-row:2}.folder-zip{grid-column:3;grid-row:2}#storageFiles.grid-view{grid-template-columns:minmax(0,1fr)}.section-head{align-items:flex-start}.selection-toolbar button{max-width:100%}.selection-toolbar #selectionCount{margin-right:auto}.subtitle{max-width:110px}.clipboard-actions button{flex:1}header{gap:8px}#controls{flex-wrap:wrap;justify-content:flex-end}#accountName{overflow-wrap:anywhere}.file-list-head{flex-wrap:wrap}}

/* Files-first Operate surface. Original Lucy identity, familiar file-browser patterns. */
:root{--paper:#f3f5f6;--surface:#fff;--ink:#24313b;--muted:#586773;--line:#d9e0e5;--accent:#256d51;--folder-blue:#398bc5;--toolbar:#f4f6f8}
#tabs{gap:4px;border-bottom:1px solid var(--line);padding:16px 0 10px;margin-bottom:8px}
#tabs button{min-width:88px;border-radius:7px;font-size:14px}
#tabs button.active{background:var(--ink);color:#fff}
#tabs button:not(.active){border-color:transparent}
#tabs button:not(.active):hover{background:#e8edf0}
.section-head{margin:20px 0}.section-head h1{font:600 28px/1.2 "Segoe UI","Noto Sans",Arial,sans-serif;letter-spacing:-.5px}
.section-head .eyebrow{letter-spacing:1.2px;font-size:10px}
.transfer-grid{display:block}.file-manager{padding:0;overflow:visible}
.file-toolbar{padding:16px;background:var(--toolbar);border-bottom:1px solid var(--line);border-radius:10px 10px 0 0;align-items:center}
.file-toolbar button{font-size:13px;padding:10px 14px}
.file-manager>#folderSupport,.file-manager>.new-folder-form,.file-manager>.file-list-head,.file-manager>.selection-toolbar,.file-manager>.dropzone,.file-manager>#storageFiles,.file-manager>#uploads,.file-manager>#storageStatus,.file-manager>.storage-policy{margin-left:20px;margin-right:20px}
.file-manager>#folderSupport{margin-top:12px}.file-manager>.storage-policy{margin-bottom:16px}
.folder-navigation{display:flex;gap:12px;align-items:flex-start;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:10px 16px;background:#fafbfc}
.history-buttons{display:flex;gap:4px;flex:none}.history-buttons button{min-width:44px;font-size:20px;padding:6px}
button:disabled{cursor:not-allowed}
#breadcrumbs{flex:1;min-width:0;padding:0;margin:0;border:0;align-items:center}
.breadcrumb{border-color:transparent;font-size:13px;font-weight:400;padding:8px 10px}
.breadcrumb+.breadcrumb::before{content:'/';color:var(--muted);margin-right:12px;font-weight:400}
.breadcrumb[aria-current=page]{background:#e8eef3;color:#203f55}
.file-list-head{margin-bottom:4px}.view-switch{padding:3px;background:var(--toolbar);border-radius:7px}.view-switch button{min-width:52px;border-color:transparent}.view-switch [aria-pressed=true]{background:white;border-color:var(--line)}
.selection-toolbar{border-bottom:1px solid var(--line);padding-bottom:12px}.select-all{min-width:44px;cursor:pointer;gap:8px}
.file-select-target{grid-column:1;grid-row:1;display:flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;width:44px;height:44px;margin:0;cursor:pointer;border-radius:6px}
/* Existing glyph was 44px. 44 × .8 = 35.2; label hit area stays 44px. */
.file-select-target input,.select-all input{min-width:35.2px;min-height:35.2px;width:35.2px;height:35.2px;flex:none;margin:0;padding:0;cursor:pointer;accent-color:var(--accent)}
.file-select-target:focus-within{outline:3px solid #8eb7a2;outline-offset:1px}
.file-select-target input:focus-visible{outline-offset:1px}
.dropzone{background:#fbfcfd;border-color:#c9d4dd;text-align:center}.dropzone p:first-child{font-weight:500}
.file-row{padding:7px 0}.file-row:hover{background:#f5f8fa}.file-row:has(input:checked){background:#ecf3f8}
.file-name{gap:12px}.file-name::before{content:'';display:block;flex:0 0 23px;width:23px;height:29px;background:#edf1f4;border:1px solid #bac7d0;border-radius:3px}
.folder-row .file-name::before{width:32px;height:26px;flex-basis:32px;background:var(--folder-blue);border:0;border-radius:3px;clip-path:polygon(0 0,40% 0,49% 17%,100% 17%,100% 100%,0 100%)}
.folder-row .file-name{font-weight:600}.folder-zip{font-size:12px;background:#f6f8fa}.file-row>button.quiet{border-color:transparent;color:#70504e}
#storageFiles.grid-view{grid-template-columns:repeat(auto-fill,minmax(min(250px,100%),1fr));padding-bottom:4px}
.grid-view .file-row{background:#fafbfc;grid-template-columns:44px minmax(0,1fr) 106px 66px;padding:12px}
.grid-view .file-name{min-height:104px;flex-direction:column;align-items:flex-start;justify-content:center;gap:12px;padding:8px 4px}
.grid-view .file-name::before{width:36px;height:44px;flex:none}.grid-view .folder-row .file-name::before{width:56px;height:44px;flex:none}
.grid-view .file-select-target{align-self:start}.grid-view .folder-row .file-name{padding-left:8px}
#clipboardPanel{padding-top:16px}.clipboard-panel{max-width:860px}.clipboard-panel h2{font:600 26px/1.2 "Segoe UI","Noto Sans",Arial,sans-serif;margin:8px 0 12px}.clipboard-panel .eyebrow{margin-top:0}.clipboard-panel textarea{max-height:440px;min-height:220px}
@media(max-width:700px){
 .file-manager{padding:0}.file-toolbar{padding:12px}.folder-navigation{padding:10px 12px;gap:8px;flex-wrap:wrap}#breadcrumbs{flex-basis:100%}
 .file-manager>#folderSupport,.file-manager>.new-folder-form,.file-manager>.file-list-head,.file-manager>.selection-toolbar,.file-manager>.dropzone,.file-manager>#storageFiles,.file-manager>#uploads,.file-manager>#storageStatus,.file-manager>.storage-policy{margin-left:12px;margin-right:12px}
 .section-head h1{font-size:26px}.section-head .eyebrow{display:none}.section-head p.muted{font-size:13px}
 .file-row{grid-template-columns:44px minmax(0,1fr) 96px 58px}.folder-zip{padding:8px 5px}
 .grid-view .file-row{grid-template-columns:44px minmax(0,1fr) 96px 58px;padding:8px}
 #storageFiles.grid-view{grid-template-columns:minmax(0,1fr)}
 #tabs button{min-width:0;flex:1;padding:10px 12px}
 .clipboard-panel{padding:16px}.clipboard-actions{gap:6px}.clipboard-actions button{padding:10px}
}
@media(max-width:360px){main{padding:0 12px}.section-head{gap:8px}.file-toolbar button{padding:10px 8px}.file-name{gap:8px}.file-manager>#folderSupport{font-size:12px}.view-switch button{padding:8px}.selection-toolbar{gap:8px}.select-all{font-size:13px}.file-row{grid-template-columns:44px minmax(0,1fr) 90px 54px}.grid-view .file-row{grid-template-columns:44px minmax(0,1fr) 90px 54px}.file-row>button.quiet{padding:8px 4px}.folder-zip{font-size:11px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}