:root{--blue:#0f6cbd;--accent:#0078d4;--ink:#242424;--muted:#616161;--line:#e0e0e0;--bg:#f5f5f5;--light:#ebf3fc;--teal:var(--blue);--navy:#0f548c;font-family:"Segoe UI",SegoeUI,Arial,sans-serif;font-size:14px;color:var(--ink);font-synthesis:none}
*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;background:var(--bg)}button,input,select,textarea{font:inherit}button{cursor:pointer;border:1px solid var(--line);border-radius:4px;background:#fff;color:inherit;padding:7px 12px;font-weight:400}button:hover{background:#ebebeb}button:disabled{opacity:.38;cursor:default}button:focus-visible,a:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:2px}input,select,textarea{width:100%;border:1px solid #bdbdbd;border-radius:3px;background:#fff;color:var(--ink);padding:8px 10px;outline:none}input:focus,select:focus,textarea:focus{border-color:var(--blue);box-shadow:inset 0 -1px var(--blue)}textarea{resize:vertical;line-height:1.5}label{display:grid;gap:6px;font-size:13px;font-weight:600;margin-bottom:16px}a{color:var(--blue)}h1,h2,h3,p{margin-top:0}h1,h2,h3{font-weight:600}h2{font-size:20px}h3{font-size:15px}.icon{display:inline-block;vertical-align:middle;width:20px;height:20px;flex:none;fill:none;stroke:currentColor;stroke-width:1.25;stroke-linecap:round;stroke-linejoin:round;pointer-events:none}.small{font-size:12px}.muted{color:var(--muted)}.eyebrow{font-size:11px;color:var(--muted);margin-bottom:5px}.primary{background:var(--blue);border-color:var(--blue);color:#fff}.primary:hover{background:#115ea3;border-color:#115ea3}.icon-button{display:inline-flex;align-items:center;justify-content:center;border:0;background:transparent;padding:7px;color:#616161}.avatar{display:inline-grid;place-items:center;width:36px;height:36px;flex-shrink:0;background:#e8ebfa;color:#464775;border-radius:50%;font-size:12px;font-weight:600}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
/* The same geometry as the reference: blue suite bar, app rail, ribbon and three panes. */
.mail-page{overflow:hidden}.suite-header{height:50px;background:var(--blue);color:#fff;display:flex;align-items:center;gap:0}.suite-launcher{border:0;border-radius:0;background:transparent;color:#fff;width:54px;height:50px;padding:15px}.suite-launcher:hover,.suite-action:hover{background:#0b5aa3}.suite-brand{display:flex;align-items:baseline;gap:9px;color:#fff;text-decoration:none;font-size:17px;font-weight:600;width:250px;flex-shrink:0;padding:0 4px;letter-spacing:.15px}.suite-brand span{font-size:12px;font-weight:400;opacity:.8}.search{display:flex;align-items:center;gap:7px;background:#fff;border:1px solid #b3d3ef;border-radius:3px;height:34px;width:412px;max-width:42vw;padding:0 10px;color:#424242}.search>.icon{width:19px;height:19px}.search input{background:transparent;border:0;box-shadow:none;min-width:0;height:32px;padding:0;font-size:14px}.search input::placeholder{color:#424242;opacity:1}.search button{display:none}.suite-actions{display:flex;align-items:center;gap:8px;margin-left:auto;padding:0 8px 0 16px}.suite-action{width:40px;height:40px;display:grid;place-items:center;border:0;background:transparent;color:#fff;border-radius:3px;padding:8px}.profile-action{padding:3px}.profile-action .avatar{background:#e8e8e8;color:#616161;border:1px solid #fff;width:34px;height:34px;font-weight:400}
.app-shell{height:calc(100dvh - 50px);min-height:0;display:grid;grid-template-columns:54px 250px minmax(0,1fr);grid-template-rows:84px minmax(0,1fr)}.app-rail{grid-column:1;grid-row:1/3;background:#f0f0f0;display:flex;flex-direction:column;align-items:center;padding:1px 0 10px;gap:8px}.rail-button{width:48px;height:43px;display:flex;align-items:center;justify-content:center;padding:0;border:0;background:transparent;color:#616161;border-radius:0;position:relative}.rail-button .icon{width:23px;height:23px}.rail-button:hover{background:#e5e5e5}.rail-button.active{color:var(--accent)}.rail-button.active:before{content:"";position:absolute;left:1px;top:7px;bottom:7px;border-left:2px solid var(--accent)}.rail-button[data-go-folder=starred]{color:#0078d4}.rail-button[data-go-folder=archive]{color:#498205}.rail-button[data-go-folder=drafts]{color:#8764b8}.rail-button#rail-team{color:#0078d4}.rail-spacer{flex:1}.ribbon{grid-column:2/4;grid-row:1;padding:0 16px 0 4px;min-width:0}.ribbon-tabs{height:38px;display:flex;align-items:stretch;gap:17px;padding:0 9px}.ribbon-tabs>button{position:relative;border:0;background:transparent;border-radius:0;padding:4px 2px;color:#424242;font-size:14px;white-space:nowrap}.ribbon-tabs>button:hover{color:#111}.ribbon-tabs>button.active{font-weight:600}.ribbon-tabs>button.active:after{content:"";position:absolute;bottom:7px;left:0;right:0;height:2px;background:var(--blue)}.ribbon-tabs>#menu-button{margin-right:5px;width:28px}.command-bar{height:46px;display:flex;align-items:center;gap:4px;background:#fff;border:1px solid #e5e5e5;border-radius:9px;padding:5px 8px;box-shadow:0 2px 3px #00000018;overflow-x:auto;scrollbar-width:none;white-space:nowrap}.command-bar::-webkit-scrollbar{display:none}.command-button{border:0;background:transparent;display:inline-flex;align-items:center;justify-content:center;gap:8px;height:32px;padding:5px 10px;color:#424242;flex-shrink:0}.command-button .icon{width:19px;height:19px}.command-button:hover{background:#f0f0f0}.compose-button{display:inline-flex;align-items:center;gap:8px;height:33px;padding:5px 14px;border-radius:4px;font-size:14px;flex-shrink:0}.compose-button .icon{width:18px;height:18px}.command-divider{height:26px;border-left:1px solid #e5e5e5;margin:0 6px;flex:none}.archive-icon{color:#498205}.flag-icon{color:#d13438}.reply-icon{color:#a23cb5}
.sidebar{grid-column:2;grid-row:2;overflow:auto;min-height:0;background:var(--bg);padding:16px 8px 12px;scrollbar-width:thin;display:flex;flex-direction:column}.folder-section-title{display:flex;align-items:center;gap:6px;font-size:13px;font-weight:600;height:24px;margin:0 0 2px;padding-left:8px;white-space:nowrap;overflow:hidden}.folder-section-title>.icon{width:15px;height:15px;color:#616161;flex:none}.folder-section-title>span{overflow:hidden;text-overflow:ellipsis}.sidebar nav{display:grid;gap:0}.sidebar nav button,.mailbox-shortcut{width:100%;display:flex;align-items:center;gap:9px;text-align:left;font-size:13px;border:0;background:transparent;border-radius:4px;min-height:27px;padding:4px 8px 4px 28px;line-height:19px}.sidebar nav button .icon,.mailbox-shortcut .icon{width:17px;height:17px;color:#424242}.sidebar nav button>span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sidebar nav button:hover,.mailbox-shortcut:hover{background:#ebebeb}.sidebar nav button.active,.mailbox-shortcut.active{background:#e7e7e7;font-weight:600}.favorites-section{margin-bottom:18px}.favorites-section nav button.active{background:transparent;font-weight:400}.account-section{margin-bottom:22px}.mailbox-section{margin-bottom:12px}.mailbox-section select{display:block;width:calc(100% - 32px);margin:7px 0 5px 26px;border-color:transparent;background:transparent;padding:4px 18px 4px 0;font-size:12px;color:#616161}.mailbox-section select:hover{border-color:#d1d1d1}.mailbox-shortcut{font-size:12px;align-items:flex-start}.mailbox-shortcut>span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.mailbox-shortcut .icon{color:var(--blue)}.sync-status{font-size:11px;line-height:1.5;color:#757575;margin-top:auto;padding:16px 12px 4px 28px}.folders-hidden .app-shell{grid-template-columns:54px 0 minmax(0,1fr)}.folders-hidden .sidebar{visibility:hidden;padding:0}
.workspace{grid-column:3;grid-row:2;min-width:0;min-height:0;display:flex;flex-direction:column;padding:8px 16px 0 1px}.mail-workspace{display:flex;flex:1;min-height:0;min-width:0}.conversation-panel{display:flex;flex-direction:column;width:412px;flex-shrink:0;min-height:0;background:#fafafa;border:1px solid var(--line);border-bottom:0;border-radius:4px 4px 0 0;overflow:hidden}.list-caption{height:41px;flex-shrink:0;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:12px;padding:0 17px 0 43px}.list-caption h1{font-size:14px;font-weight:600;margin:0;line-height:20px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.list-star .icon{width:16px;height:16px;fill:#424242;stroke:#424242}.list-order{margin-left:auto;color:#424242}.list-order .icon{width:18px;height:18px}.conversation-list{flex:1;overflow:auto;scrollbar-width:thin;min-height:0;background:#f5f5f5}.conversation{width:100%;display:block;position:relative;border:0;border-bottom:1px solid var(--line);border-radius:0;background:#fff;text-align:left;padding:7px 24px 8px 43px;height:78px;line-height:18px;box-shadow:none}.conversation:hover{background:#f5f5f5}.conversation.selected{background:#f3f8fd;outline:1px solid var(--accent);outline-offset:-1px}.conversation.unread:before{content:"";position:absolute;top:0;bottom:0;left:0;width:3px;background:var(--blue)}.conversation-top{display:flex;align-items:center;gap:7px;margin:0 0 1px;min-width:0}.conversation-who{font-size:13px;line-height:18px;font-weight:400;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1}.conversation-top .icon{width:13px;height:13px;color:#616161}.conversation-subject{display:flex;align-items:baseline;gap:10px;min-width:0;margin-bottom:1px}.conversation h3{font-size:13px;line-height:18px;font-weight:400;margin:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0}.conversation time{font-size:12px;line-height:18px;color:#616161;white-space:nowrap;flex:none}.conversation.unread h3,.conversation.unread time{color:var(--accent);font-weight:600}.conversation.unread .conversation-who{font-weight:600}.conversation p{font-size:12px;line-height:18px;font-weight:400;color:#616161;margin:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conversation-context{font-size:10px;color:#8a8886;font-weight:400;flex:none;max-width:90px;overflow:hidden;text-overflow:ellipsis}.conversation-meta{display:none}.pagination{min-height:37px;display:flex;align-items:center;justify-content:space-between;gap:8px;padding:3px 9px;border-top:1px solid var(--line);background:#fafafa;font-size:11px;color:#616161}.pagination button{border:0;background:transparent;padding:4px 9px;display:flex}.pagination .icon{width:16px;height:16px}.comfortable .conversation{height:101px;padding-top:13px;padding-bottom:13px}.comfortable .conversation p{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.reader{flex:1;min-width:0;overflow:auto;padding:17px 22px;background:var(--bg);scrollbar-width:thin}.empty-state{min-height:250px;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:24px;color:#616161}.empty-state h2{font-size:17px;font-weight:600;margin:0 0 10px;color:#424242}.empty-state p{font-size:13px;line-height:1.65;max-width:320px;margin:0}.empty-icon{color:#a6a6a6;margin-bottom:25px;display:grid;place-items:center}.empty-icon .icon{width:100px;height:100px;stroke-width:.65}.conversation-list .empty-state{height:auto;min-height:300px}.conversation-list .empty-icon .icon{width:56px;height:56px}.reader-header{margin-bottom:14px}.reader-header h2{font-size:20px;line-height:1.4;font-weight:600;margin:8px 0 14px;overflow-wrap:anywhere}.reader-actions,.reader-controls{display:flex;align-items:center;flex-wrap:wrap;gap:4px}.reader-actions button{display:inline-flex;align-items:center;gap:6px;border:0;background:transparent;padding:6px 8px;font-size:12px}.reader-actions button:hover{background:#e5e5e5}.reader-actions button.primary{background:#fff;color:var(--blue);border:1px solid #d1d1d1}.reader-actions .icon{width:17px;height:17px}.reader-controls{gap:7px;margin-top:12px}.reader-controls select{width:auto;max-width:175px;font-size:12px;padding:5px 8px;border-color:#d1d1d1;background:#fff}.reader-actions .eyebrow{margin:0;font-size:10px;color:#8a8886}.reader-actions .back-reader{display:none}.message-card{margin-bottom:12px;border:1px solid var(--line);border-radius:4px;background:#fff;box-shadow:0 1px 2px #00000005}.message-card summary{list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:12px;padding:18px 20px;margin:0}.message-card summary::-webkit-details-marker{display:none}.message-info{flex:1;min-width:0}.message-info strong{font-size:13px;font-weight:600;overflow-wrap:anywhere}.message-info p{font-size:12px;line-height:1.5;color:#616161;overflow-wrap:anywhere;margin:5px 0 0}.message-info .preview{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.message-card[open] .preview{display:none}.message-date{font-size:11px;line-height:1.5;color:#757575;text-align:right;max-width:115px;flex:none}.message-card iframe{width:100%;height:350px;display:block;border:0;border-top:1px solid #f0f0f0}.message-footer{padding:12px 18px;border-top:1px solid #ebebeb;display:flex;flex-wrap:wrap;gap:7px;align-items:center}.attachment{display:inline-flex;align-items:center;gap:5px;max-width:100%;overflow-wrap:anywhere;text-decoration:none;padding:6px 9px;font-size:12px;border:1px solid #d1d1d1;border-radius:3px;color:var(--blue)}.attachment .icon{width:15px;height:15px}.message-footer button{font-size:12px}.message-card>.small{padding:8px 18px;margin:0;font-size:11px;line-height:1.6}.message-error{padding:10px 18px;margin:0;background:#fff4ce;color:#8a6200;font-size:12px;overflow-wrap:anywhere}.message-card.note{border-left:3px solid #eaa300}.tag{font-size:10px;display:inline-block;padding:2px 5px;border-radius:2px;background:#f0f0f0;color:#616161;font-weight:400}.tag.failed,.tag.unconfirmed{background:#fff4ce;color:#8a6200}.tag.accepted,.tag.received{background:#f0f6ed;color:#366b21}.notice{padding:9px 16px;background:#fff4ce;color:#6d5700;font-size:12px;margin-bottom:5px}.reader-hidden .conversation-panel{width:100%}.reader-hidden .reader{display:none}.reader-hidden .workspace.reading .conversation-panel{display:none}.reader-hidden .workspace.reading .reader{display:block}.reader-hidden .reader-actions .back-reader{display:inline-flex}
/* Compose and administration retain the same controls, with the light Office palette. */
dialog{border:1px solid #d1d1d1;border-radius:6px;padding:0;width:min(560px,calc(100% - 32px));max-height:90dvh;box-shadow:0 12px 48px #0003;color:var(--ink)}dialog::backdrop{background:#0005}.compose-dialog{width:min(760px,calc(100% - 32px))}.settings-dialog{width:min(820px,calc(100% - 32px))}.dialog-header{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:17px 24px;border-bottom:1px solid var(--line)}.dialog-header h2{font-size:19px;margin:0}.dialog-body{padding:21px 24px}.dialog-body p{line-height:1.6}.dialog-footer{padding:14px 24px;border-top:1px solid var(--line);background:#fafafa;display:flex;justify-content:flex-end;gap:9px;align-items:center}.two-columns{display:grid;grid-template-columns:1fr 1fr;gap:16px}.compose-options{display:flex;align-items:center;justify-content:space-between;gap:20px}.compose-options label{font-size:12px}.file-picker{display:block}.file-picker .icon{width:16px;height:16px}.file-picker input{display:block;max-width:260px;font-size:12px;padding:7px;margin-top:7px}.form-error{color:#a4262c;font-size:12px;line-height:1.6;margin-bottom:0}.form-error:empty{display:none}.settings-tabs{display:flex;flex-wrap:wrap;gap:6px;padding:11px 24px;border-bottom:1px solid var(--line)}.settings-tabs button{border:0;background:transparent;font-size:12px}.settings-tabs .active{color:var(--blue);background:var(--light);font-weight:600}.settings-row{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:15px 0;border-bottom:1px solid var(--line)}.settings-row p{margin:5px 0 0;font-size:12px;color:#616161;overflow-wrap:anywhere}.settings-row button{font-size:12px}.settings-intro{font-size:13px;line-height:1.7;color:#616161}.check-label{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:400}.check-label input{width:auto}.check-list{padding:12px;border:1px solid var(--line);border-radius:3px;margin-bottom:18px}.check-list label{margin:5px 0}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}.section-heading h3{margin:0}details>summary{font-size:12px;cursor:pointer;margin-bottom:14px}#settings-content p{overflow-wrap:anywhere}.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:#323130;color:white;padding:12px 22px;border-radius:4px;box-shadow:0 4px 16px #0003;z-index:50;font-size:13px;max-width:90vw}.loading{padding:35px 20px;font-size:13px;color:#757575;text-align:center}
.login-page{min-height:100dvh;display:flex;align-items:center;justify-content:center;gap:8vw;background:linear-gradient(135deg,#0f6cbd,#0f548c);padding:30px}.login-card{width:430px;background:white;border:1px solid #e0e0e0;border-radius:6px;padding:40px;box-shadow:0 8px 32px #00376340}.brand-mark{display:grid;place-items:center;width:38px;height:38px;background:var(--blue);color:#fff;font-size:23px;font-weight:600;border-radius:4px;margin-bottom:24px}.login-card h1{font-size:28px;line-height:1.3;margin:16px 0}.login-card .muted{font-size:13px;line-height:1.7;margin-bottom:26px}.login-card form .primary{display:flex;justify-content:space-between;width:100%;padding:11px 13px;margin-top:24px}.login-foot{font-size:11px;color:#757575;text-align:center;margin:24px 0 0}.login-caption{color:#fff;font-size:34px;line-height:1.5;font-weight:300}
@media(min-width:1600px){.conversation-panel{width:440px}.search{width:440px}.reader{padding:22px 30px}}
@media(max-width:1150px){.app-shell{grid-template-columns:48px 218px minmax(0,1fr)}.suite-launcher{width:48px}.suite-brand{width:218px;font-size:16px}.conversation-panel{width:340px}.search{width:340px}.reader{padding:14px}.reader-actions button{padding:6px}.command-label{display:none}.ribbon{padding-right:10px}.workspace{padding-right:10px}.message-card summary{padding:14px}.message-date{max-width:80px}.conversation{padding-left:30px;padding-right:18px}.list-caption{padding-left:30px}}
@media(max-width:900px){.suite-brand{width:210px}.app-shell{grid-template-columns:48px 0 minmax(0,1fr)}.sidebar{position:fixed;top:134px;left:48px;bottom:0;z-index:20;width:250px;border-right:1px solid #d1d1d1;transform:translateX(-310px);transition:transform .18s;visibility:hidden}.sidebar.visible{transform:translateX(0);visibility:visible;box-shadow:12px 12px 28px #0002}.folders-hidden .sidebar.visible{padding:16px 8px 12px;visibility:visible}.conversation-panel{width:340px}.suite-brand span{display:none}.suite-actions{gap:1px;padding-left:6px}.suite-action{width:34px}.search{width:340px;max-width:none;flex:1}.suite-brand{width:150px}.ribbon-tabs{gap:16px}.mailbox-section select{width:calc(100% - 30px)}.folders-hidden .app-shell{grid-template-columns:48px 0 minmax(0,1fr)}}
@media(max-width:650px){.suite-header{height:98px;flex-wrap:wrap;padding-bottom:8px}.suite-launcher{height:45px;width:42px;padding:11px}.suite-brand{width:auto;flex:1;height:45px;align-items:center;font-size:15px}.suite-actions{height:45px;gap:3px;padding-right:6px}.suite-actions #header-help{display:none}.suite-action{height:34px;width:34px}.profile-action .avatar{width:29px;height:29px}.search{order:5;margin:0 10px;width:calc(100% - 20px);max-width:none;flex-basis:100%;height:35px}.search input{font-size:14px}.app-shell{height:calc(100dvh - 98px);grid-template-columns:0 0 minmax(0,1fr);grid-template-rows:81px minmax(0,1fr)}.app-rail{display:none}.ribbon{grid-column:1/4;padding:0 6px}.ribbon-tabs{height:35px;gap:18px;padding:0 5px}.ribbon-tabs>button{font-size:12px}.ribbon-tabs>#menu-button{width:24px;margin-right:0}.ribbon-tabs>button.active:after{bottom:5px}.command-bar{height:44px;border-radius:6px;padding:5px;gap:1px}.command-button{padding:5px 7px}.command-divider{margin:0 3px}.compose-button{height:31px;font-size:13px;padding:4px 10px;gap:6px}.compose-button .icon{width:16px;height:16px}.command-bar .refresh-command span{display:none}.sidebar{top:179px;left:0;width:270px;box-shadow:6px 0 18px #0002}.sidebar.visible{transform:translateX(0)}.workspace{padding:7px 6px 0;grid-column:1/4}.conversation-panel{width:100%;border-radius:3px 3px 0 0}.list-caption{padding-left:30px}.conversation{padding-left:30px;padding-right:16px;height:79px}.reader{display:none;width:100%;padding:12px 4px}.workspace.reading .reader{display:block}.workspace.reading .conversation-panel{display:none}.reader-actions .back-reader{display:inline-flex}.reader-header h2{font-size:18px;margin:8px 4px 12px}.reader-actions{gap:2px}.reader-actions button{font-size:11px;padding:6px}.reader-controls{gap:5px}.reader-controls select{max-width:145px;font-size:11px}.message-card summary{padding:13px 10px;gap:8px}.message-card .avatar{width:28px;height:28px;font-size:10px}.message-info strong{font-size:12px}.message-info p{font-size:11px}.message-date{font-size:10px;max-width:75px}.message-footer{padding:10px}.attachment{font-size:11px;padding:6px}.dialog-header,.dialog-footer{padding:14px 17px}.dialog-body{padding:18px 17px}.two-columns{grid-template-columns:1fr;gap:0}.compose-options{display:block}.settings-tabs{padding:10px;gap:2px}.settings-tabs button{font-size:11px;padding:7px}.settings-row{align-items:flex-start}.settings-row>div{min-width:0}.settings-row button{font-size:11px}.login-caption{display:none}.login-page{padding:20px}.login-card{padding:30px 25px}.folders-hidden .app-shell{grid-template-columns:0 0 minmax(0,1fr)}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}