:root{--rail-w: 48px;--header-h: 48px;--tabs-h: 36px;--ribbon-h: 92px;--folders-w: 240px;--list-w: 380px;--border: #edebe9;--border-strong: #c8c6c4;--bg-app: #f5f5f5;--bg-chrome: #f5f5f5;--bg-rail: #ebebeb;--bg-card: #fff;--bg-selected: #e0eaf5;--bg-hover: #ebebeb;--bg-row-selected: #cfe4fa;--accent: #0078d4;--accent-hover: #106ebe;--accent-bg: #cfe4fa;--text: #201f1e;--muted: #605e5c;--muted-light: #a19f9d;--unread: #0078d4;--fenway-red: #c43f1b}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;height:100%;font-family:Segoe UI,system-ui,-apple-system,sans-serif;background:var(--bg-chrome);color:var(--text);font-size:14px}button{font-family:inherit}.layout{display:grid;grid-template-columns:var(--rail-w) var(--folders-w) var(--list-w) 1fr;grid-template-rows:var(--header-h) var(--tabs-h) var(--ribbon-h) 1fr;height:100vh;overflow:hidden}.app-rail{grid-column:1;grid-row:1 / -1}.header{grid-column:2 / -1;grid-row:1}.ribbon-tabs{grid-column:2 / -1;grid-row:2}.ribbon{grid-column:2 / -1;grid-row:3}.folder-list{grid-column:2;grid-row:4}.message-list{grid-column:3;grid-row:4}.reading-pane{grid-column:4;grid-row:4}.app-rail{background:var(--bg-rail);border-right:1px solid var(--border);display:flex;flex-direction:column;align-items:center;padding:8px 0;gap:4px}.app-rail__btn{width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:none;border:0;border-radius:4px;color:var(--text);cursor:pointer;position:relative}.app-rail__btn:hover:not(:disabled){background:var(--bg-hover)}.app-rail__btn:disabled{color:var(--muted-light);cursor:not-allowed}.app-rail__btn--selected{color:var(--accent);background:var(--accent-bg)}.app-rail__btn--selected:before{content:"";position:absolute;left:-8px;top:8px;bottom:8px;width:3px;background:var(--accent);border-radius:2px}.header{display:grid;grid-template-columns:1fr minmax(360px,720px) 1fr;align-items:center;padding:0 16px;background:var(--bg-chrome);color:var(--text);gap:16px;border-bottom:1px solid var(--border)}.header__brand{display:flex;align-items:center;gap:12px}.brand-mark{display:flex;align-items:center;gap:4px;font-weight:800;font-size:11px}.brand-mark__pill{background:var(--fenway-red);color:#fff;padding:4px 8px;border-radius:2px;letter-spacing:.04em}.brand-mark__sub{color:var(--text);letter-spacing:.04em}.header__app-name{font-size:16px;font-weight:600;color:var(--text)}.header__search{display:flex;align-items:center;gap:8px;background:#fff;border:1px solid transparent;border-radius:999px;padding:6px 16px;height:32px;width:100%;max-width:720px;justify-self:center;box-shadow:0 1px 2px #0000000a}.header__search:hover,.header__search:focus-within{border-color:var(--accent)}.header__search-icon{color:var(--muted);flex-shrink:0}.header__search-input{flex:1;background:none;border:0;outline:0;font:inherit;color:var(--text)}.header__search-input::placeholder{color:var(--muted)}.header__actions{display:flex;align-items:center;justify-content:flex-end;gap:12px}.header__icon-btn{width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:none;border:0;border-radius:4px;cursor:pointer;color:var(--text)}.header__icon-btn:hover:not(:disabled){background:var(--bg-hover)}.header__icon-btn:disabled{color:var(--muted-light);cursor:not-allowed}.pill{display:inline-block;width:10px;height:10px;border-radius:50%}.pill--live{background:#107c10}.pill--connecting{background:#c8a008}.pill--disconnected,.pill--denied{background:#a4262c}.ribbon-tabs{display:flex;align-items:center;background:#fff;border-bottom:1px solid var(--border);padding:0 12px;gap:4px}.ribbon-tabs__hamburger{width:32px;height:32px;background:none;border:0;border-radius:4px;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text)}.ribbon-tabs__hamburger:hover:not(:disabled){background:var(--bg-hover)}.ribbon-tabs__hamburger:disabled{color:var(--muted-light);cursor:not-allowed}.ribbon-tabs__tab{padding:8px 14px;background:none;border:0;border-bottom:2px solid transparent;cursor:pointer;font-size:14px;color:var(--text)}.ribbon-tabs__tab:hover:not(:disabled){background:var(--bg-hover)}.ribbon-tabs__tab:disabled{color:var(--muted-light);cursor:not-allowed}.ribbon-tabs__tab--selected{border-bottom-color:var(--accent);font-weight:600;color:var(--text)!important}.ribbon{display:flex;align-items:stretch;background:var(--bg-chrome);border-bottom:1px solid var(--border);padding:4px 12px;gap:0;overflow-x:auto}.rb-group{display:flex;flex-direction:column;align-items:center;padding:0 10px;flex-shrink:0;justify-content:space-between}.rb-group__items{display:flex;align-items:stretch;gap:2px;flex:1}.rb-group__title{font-size:11px;color:var(--muted);margin-top:4px;padding-bottom:2px;white-space:nowrap}.rb-divider{width:1px;background:var(--border);margin:6px 4px;flex-shrink:0;align-self:stretch}.rb-btn{display:flex;flex-direction:column;align-items:center;justify-content:flex-start;gap:4px;padding:4px 10px;background:none;border:1px solid transparent;border-radius:4px;cursor:pointer;font-size:12px;color:var(--text);min-width:56px;line-height:1.2}.rb-btn:hover:not(:disabled){background:var(--bg-hover);border-color:var(--border)}.rb-btn:disabled{color:var(--muted-light);cursor:not-allowed}.rb-btn__icon{display:flex;flex-shrink:0;margin-top:2px}.rb-btn__label{display:block;text-align:center;font-size:12px}.rb-btn--primary{background:var(--accent);color:#fff;border-color:var(--accent)}.rb-btn--primary:hover:not(:disabled){background:var(--accent-hover);border-color:var(--accent-hover)}.rb-btn--primary:disabled{background:var(--bg-hover);color:var(--muted-light);border-color:transparent}.rb-btn--purple .rb-btn__icon{color:#881798}.rb-btn--blue .rb-btn__icon{color:#0078d4}.rb-btn--neutral .rb-btn__icon{color:#605e5c}.rb-btn--green .rb-btn__icon{color:#107c10}.rb-btn--red .rb-btn__icon{color:#a4262c}.rb-btn__icon svg{width:28px;height:28px}.rb-btn:disabled .rb-btn__icon{color:var(--muted-light)}.rb-btn--primary .rb-btn__icon,.rb-btn--primary:hover:not(:disabled) .rb-btn__icon{color:#fff}.folder-list{background:var(--bg-rail);border-right:1px solid var(--border);overflow-y:auto;padding:8px 0}.folder-account{padding:12px 16px 6px;font-size:12px;color:var(--muted);font-weight:600;letter-spacing:.02em}.folder-row{display:grid;grid-template-columns:24px 1fr auto;align-items:center;gap:10px;width:100%;padding:8px 16px;background:none;border:0;font:inherit;text-align:left;cursor:pointer;color:var(--text);border-left:3px solid transparent}.folder-row:hover:not(:disabled){background:var(--bg-hover)}.folder-row:disabled{color:var(--muted-light);cursor:not-allowed}.folder-row--selected{background:var(--bg-selected);border-left-color:var(--accent);font-weight:600}.folder-row__icon{display:flex;color:inherit}.folder-row__label{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.folder-row__count{font-size:12px;color:var(--muted);font-weight:400}.message-list{background:#fff;border-right:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden}.list-tabs{display:flex;align-items:center;padding:0 12px;border-bottom:1px solid var(--border);gap:4px;flex-shrink:0}.list-tab{padding:12px 14px;background:none;border:0;border-bottom:2px solid transparent;cursor:pointer;font:inherit;color:var(--text)}.list-tab:hover{color:var(--accent)}.list-tab--selected{border-bottom-color:var(--accent);font-weight:600}.message-list__scroll{overflow-y:auto;flex:1}.message-group__head{display:flex;align-items:center;gap:8px;padding:10px 12px 4px;background:var(--bg-app);border-bottom:1px solid var(--border);cursor:default}.message-group__chevron{color:var(--text);flex-shrink:0}.message-group__label{font-size:14px;font-weight:600;color:var(--text)}.message-group__items{list-style:none;margin:0;padding:0}.message-row{position:relative;display:grid;grid-template-columns:auto 1fr;gap:10px;padding:10px 12px;cursor:pointer;border-left:3px solid transparent;border-bottom:1px solid transparent}.message-row:hover{background:var(--bg-hover)}.message-row--selected{background:var(--bg-row-selected)!important;border-left-color:var(--accent)}.message-row--checked{background:var(--bg-row-selected)!important}.message-row--checked+.message-row--checked{border-top:1px solid #b3d6f2}.message-row--unread .message-row__sender,.message-row--unread .message-row__subject{font-weight:700}.message-row__select{position:relative;width:32px;height:32px;flex-shrink:0;display:flex;align-items:center;justify-content:center}.message-row__select .check{position:absolute;top:6px;right:6px;bottom:6px;left:6px;display:none}.message-row:hover .message-row__avatar,.message-row--checked .message-row__avatar,.message-list--multi .message-row__avatar{display:none}.message-row:hover .message-row__select .check,.message-row--checked .message-row__select .check,.message-list--multi .message-row__select .check{display:flex}.check{width:20px;height:20px;border:1.5px solid var(--border-strong);border-radius:3px;background:#fff;display:flex;align-items:center;justify-content:center;color:#fff;cursor:pointer;flex-shrink:0;transition:background .1s,border-color .1s}.check:hover{border-color:var(--accent)}.check--checked,.check--indeterminate{background:var(--accent);border-color:var(--accent)}.check--checked:hover,.check--indeterminate:hover{background:var(--accent-hover);border-color:var(--accent-hover)}.message-row--unread .message-row__line1:before{content:"";display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--unread);margin-right:6px}.message-row__avatar{flex-shrink:0}.message-row__content{min-width:0;display:flex;flex-direction:column;gap:2px}.message-row__line1{display:flex;align-items:baseline;gap:8px}.message-row__sender{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.message-row__time{color:var(--muted);font-size:12px;flex-shrink:0}.message-row__line2{display:flex;align-items:center;gap:6px}.message-row__subject{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.message-row__attach{color:var(--muted);flex-shrink:0}.message-row__preview{color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px}.message-row__chips{display:flex;gap:4px;flex-wrap:wrap;margin-top:4px}.sender-avatar{border-radius:50%;display:inline-flex;align-items:center;justify-content:center;color:#fff;font-weight:600;text-transform:uppercase}.chip{display:inline-block;padding:1px 8px;border-radius:4px;font-size:11px;font-weight:500;background:#f3f2f1;color:var(--muted);white-space:nowrap}.chip--assignee{background:#deecf9;color:#004578}.chip--unassigned{background:#fff4ce;color:#797673}.chip--ai{background:#e1dfdd;color:#323130;font-style:italic}.chip--sla{background:#f5e9c8;color:#6a4e00}.chip--status{font-weight:600}.chip--unassigned,.chip--status.chip--unassigned{background:#fff4ce;color:#797673}.chip--in_progress{background:#fff4ce;color:#6a4e00}.chip--replied{background:#dff6dd;color:#107c10}.chip--closed{background:#e1dfdd;color:#605e5c}.chip--archived{background:#fde7e9;color:#a4262c}.reading-pane{background:#fff;display:flex;flex-direction:column;overflow:hidden}.reading-pane--empty{align-items:center;justify-content:center}.reading-pane__topbar{padding:14px 20px 6px;flex-shrink:0}.reading-pane__subject{font-weight:600;font-size:18px;display:block}.strip{display:flex;gap:6px;flex-wrap:wrap;padding:4px 20px 8px;align-items:center;flex-shrink:0;border-bottom:1px solid var(--border)}.reading-pane__from{display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center;padding:12px 20px;flex-shrink:0;border-bottom:1px solid var(--border)}.reading-pane__from-text{min-width:0;display:flex;flex-direction:column;gap:2px}.reading-pane__email,.reading-pane__to{color:var(--muted)}.reading-pane__date{color:var(--muted);display:block}.reading-pane__from-right{display:flex;flex-direction:column;align-items:flex-end;gap:4px;flex-shrink:0}.reading-pane__top-actions{display:flex;gap:4px}.rp-mini-btn{display:inline-flex;align-items:center;gap:4px;height:26px;padding:0 8px;background:transparent;border:1px solid transparent;border-radius:4px;color:var(--muted);font:inherit;font-size:12px;cursor:pointer;transition:background .1s,color .1s,border-color .1s}.rp-mini-btn:hover{background:var(--bg-hover);color:var(--accent);border-color:var(--border)}.rp-mini-btn:active{background:var(--accent-bg)}.reading-pane__bottom-actions{display:flex;gap:8px;padding:12px 20px 16px;flex-shrink:0;border-top:1px solid var(--border);background:#fff}.rp-pill-btn{display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 14px;background:#fff;border:1px solid var(--border-strong);border-radius:16px;color:var(--text);font:inherit;font-size:13px;cursor:pointer;transition:background .1s,color .1s,border-color .1s}.rp-pill-btn:hover{background:var(--bg-hover);border-color:var(--accent);color:var(--accent)}.rp-pill-btn--primary{background:var(--accent);border-color:var(--accent);color:#fff}.rp-pill-btn--primary:hover{background:var(--accent-hover);border-color:var(--accent-hover);color:#fff}.attachments{display:flex;flex-wrap:wrap;gap:10px;padding:12px 20px;background:#fff;flex-shrink:0}.attach{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:10px;padding:8px 10px;min-width:240px;max-width:320px;background:#fff;border:1px solid var(--border);border-radius:6px;box-shadow:0 1px 2px #0000000f;cursor:pointer;font:inherit;text-align:left;color:var(--text);transition:background .1s,border-color .1s,box-shadow .1s}.attach:hover{background:var(--bg-hover);border-color:var(--border-strong);box-shadow:0 2px 4px #00000014}.attach__icon{display:flex;flex-shrink:0;color:var(--muted)}.attach--pdf .attach__icon{color:#c43f1b}.attach--xls .attach__icon{color:#107c10}.attach--doc .attach__icon{color:#0078d4}.attach--img .attach__icon{color:#5c2d91}.attach--zip .attach__icon,.attach--generic .attach__icon{color:#c8a008}.attach__text{min-width:0;display:flex;flex-direction:column;gap:2px}.attach__name{font-weight:400;font-size:13px;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.attach__size{font-size:12px;color:var(--muted)}.attach__menu{display:flex;color:var(--muted);flex-shrink:0}.reading-pane__scroll{flex:1;overflow:auto;background:#fff}.reading-pane__body{background:#fff}.reading-pane__iframe{width:100%;border:0;display:block}.reading-pane__text{padding:16px 20px;margin:0;white-space:pre-wrap;word-wrap:break-word;font-family:Segoe UI,system-ui,sans-serif}.centered{display:flex;align-items:center;justify-content:center;padding:24px}.fullscreen{height:100vh}