:root{font-family:Inter,"Noto Sans TC","Microsoft JhengHei",sans-serif;color:#203047;background:#f4f7fb;font-size:14px;--accent:#1769cf;--border:#dbe3ed;--muted:#758299}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,.file-button{border:1px solid var(--border);background:white;color:#34445b;border-radius:7px;padding:9px 13px;cursor:pointer;white-space:nowrap}button:hover,.file-button:hover{background:#edf3fa;border-color:#acbdd2}button:disabled{opacity:.45;cursor:wait}button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #9bc5fa;outline-offset:2px}input,select{min-width:0;background:white;border:1px solid #bbc9d9;border-radius:6px;padding:11px;color:#203047}input::placeholder{color:#8792a3}.primary{background:var(--accent);color:white;border-color:var(--accent)}.primary:hover{background:#1254a8;color:#fff}.muted{color:#6a788d}.error{color:#b32838;min-height:18px}[hidden]{display:none!important}label{display:flex;flex-direction:column;gap:8px}h1,h2,p{margin-top:0}h2{font-size:20px}.login-screen{min-height:100dvh;display:grid;grid-template-columns:1fr 440px;gap:100px;align-items:center;max-width:1120px;margin:auto;padding:50px}.brand-mark{width:74px;height:74px;border-radius:22px;background:#1769cf;color:white;display:grid;place-items:center;font-size:40px;box-shadow:0 12px 32px #1769cf30}.welcome h1{font-size:48px;letter-spacing:-2px;margin:20px 0 36px}.welcome-title{font-size:30px;font-weight:600}.welcome p:not(.welcome-title){color:#6a788d;line-height:1.9;font-size:17px}.version{margin-top:50px;color:#8694a7}.login-card{padding:36px;border:1px solid var(--border);border-radius:16px;background:white;box-shadow:0 16px 60px #1637600c}.login-card label{margin-top:24px}.login-card button{width:100%;margin-top:10px}.login-note{font-size:12px;line-height:1.8;color:#77849a;margin:26px 0 0}.appbar{height:68px;display:flex;align-items:center;padding:0 22px;gap:32px;background:white;border-bottom:1px solid var(--border)}.brand{display:flex;align-items:center;gap:10px;min-width:194px;text-decoration:none;color:var(--accent);font-size:26px}.brand span{font-size:11px;background:#e9f1fd;border-radius:4px;padding:3px 6px}.appbar form{display:flex;align-items:center;gap:9px;background:#f3f6fa;border:1px solid var(--border);border-radius:8px;max-width:630px;flex:1;padding-left:12px}.appbar input{background:transparent;border:0;flex:1;padding:10px}.appbar form button{border:0;background:transparent;color:#66778f}.appbar>button{margin-left:auto}.workspace{display:grid;grid-template-columns:240px 350px minmax(0,1fr);height:calc(100dvh - 68px)}.sidebar{padding:22px 14px;display:flex;flex-direction:column;border-right:1px solid var(--border);background:#f4f7fb;overflow:auto}.compose-button{padding:13px;font-weight:600;font-size:15px;margin-bottom:26px}.account-label,.section-label{font-size:11px;color:#748197;letter-spacing:1px;margin:0 9px 9px}.sidebar select{font-size:13px;width:100%}.subtle{background:transparent;border:0;text-align:left;font-size:12px;margin:6px 0 24px;color:#66778f}.sidebar nav{display:flex;flex-direction:column;gap:4px}.folder{display:flex;gap:12px;border:0;background:transparent;text-align:left;padding:12px;overflow:hidden;text-overflow:ellipsis}.folder.active{background:#e1edfd;color:#1456a7;font-weight:600}.folder span{font-size:17px;width:20px;text-align:center}.sidebar-bottom{margin-top:auto;padding-top:24px;display:grid;gap:5px}.sidebar-bottom button{border:0;background:transparent;text-align:left;color:#69788c}.mail-list{display:flex;flex-direction:column;background:white;border-right:1px solid var(--border);min-height:0}.list-heading{padding:23px 20px 19px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border)}.list-heading h2{font-size:19px;margin-bottom:6px}.list-heading .muted{font-size:12px}.list-indicator{font-size:11px;color:#8290a1}#messages{overflow:auto;flex:1}.mail-row{display:block;width:100%;border:0;border-bottom:1px solid #edf0f5;border-radius:0;text-align:left;padding:18px 20px;white-space:normal;position:relative}.mail-row:hover{background:#f5f8fd}.mail-row.active{background:#eaf2ff;box-shadow:inset 3px 0 var(--accent)}.mail-row .row-top{display:flex;justify-content:space-between;gap:10px;margin-bottom:9px}.sender{font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:210px}.mail-row time{font-size:11px;color:#77859a;white-space:nowrap}.mail-row .subject{font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#46566d}.mail-row.unread .sender,.mail-row.unread .subject{font-weight:700;color:#203047}.mail-row.unread::before{content:'';position:absolute;left:7px;top:24px;width:5px;height:5px;border-radius:50%;background:#2474d5}.pagination{border-top:1px solid var(--border);padding:9px 18px;display:flex;justify-content:space-between;align-items:center;font-size:12px;color:#6a788d}.pagination button{padding:4px 12px}.reader{background:white;overflow:auto;min-width:0}.empty{height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#8593a6;padding:30px;text-align:center}.empty-icon{font-size:50px;color:#aac3e5;margin-bottom:24px}.empty h2{font-size:19px;color:#4f6078}.empty p{font-size:13px}.reader-actions{display:flex;gap:8px;padding:16px 24px;border-bottom:1px solid var(--border);background:#fafbfd;position:sticky;top:0;z-index:1}#back-list{display:none}.message-heading{padding:28px 30px 20px}.message-heading h1{font-size:24px;line-height:1.5;overflow-wrap:anywhere;margin-bottom:22px}.message-heading p{font-size:13px;overflow-wrap:anywhere;margin-bottom:8px}.message-heading time{font-size:12px;color:#8290a3}.privacy-note{margin:0 30px;padding:10px 12px;background:#f4f7fb;color:#708096;font-size:11px;border-radius:5px}#message-body{border:0;width:100%;height:calc(100dvh - 330px);min-height:350px;background:white}#message-attachments{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}#message-attachments a{font-size:12px;color:#1769cf;border:1px solid var(--border);padding:8px;text-decoration:none;border-radius:5px}dialog{border:1px solid var(--border);border-radius:12px;box-shadow:0 24px 100px #15284040;padding:0;color:#203047}dialog::backdrop{background:#14283f70;backdrop-filter:blur(2px)}#composer{width:min(1040px,95vw);height:min(850px,94dvh);max-height:94dvh}#compose-form{height:100%;display:flex;flex-direction:column}.dialog-heading{padding:16px 22px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;background:#f5f8fc}.dialog-heading h2{font-size:17px;margin:0 0 4px}.dialog-heading span{font-size:12px;color:#708096}.dialog-heading button{border:0;background:transparent}.compose-fields{padding:14px 22px;display:grid;gap:9px}.compose-fields label{display:grid;grid-template-columns:65px 1fr;align-items:center;font-size:12px;color:#65758b}.compose-fields input{padding:9px 11px}.copy-fields{display:flex;gap:18px}.copy-fields label{flex:1}.editor-shell{flex:1;min-height:120px;overflow:hidden;margin:0 22px;border:1px solid #becbdc;border-radius:7px;background:#fff}.editor-shell .tox-tinymce{border:0!important;border-radius:0!important}.compose-footer{padding:16px 22px;display:flex;gap:10px;align-items:center;flex-wrap:wrap}.compose-footer span{font-size:12px;color:#6c7b90;margin-left:auto}.compose-footer .file-button{display:inline-block}#outgoing-attachments{display:flex;gap:8px;flex-wrap:wrap;padding:8px 22px 0;font-size:12px}#outgoing-attachments:empty{display:none}#outgoing-attachments button{padding:5px 9px;background:#f1f5fb}#password-dialog{width:440px;padding:30px}#password-form label{margin:18px 0}#password-form footer{display:flex;gap:10px;margin-top:20px}#notice{position:fixed;top:14px;left:50%;transform:translateX(-50%);z-index:10000;padding:13px 22px;background:#213d5e;color:white;border-radius:8px;box-shadow:0 6px 20px #0002;max-width:90vw}.loading{padding:35px 20px;color:#8290a3;text-align:center}
@media(min-width:1500px){.workspace{grid-template-columns:250px 390px minmax(0,1fr)}}@media(max-width:1100px){.workspace{grid-template-columns:200px 300px minmax(0,1fr)}.brand{min-width:150px}.message-heading{padding:20px}.reader-actions{padding:12px}.appbar{gap:15px}}@media(max-width:850px){.workspace{grid-template-columns:180px 1fr}.reader{display:none}.workspace.reading .mail-list{display:none}.workspace.reading .reader{display:block}#back-list{display:block}.appbar .brand{min-width:auto}.appbar>button span{display:none}.appbar{padding:0 12px}.login-screen{grid-template-columns:1fr;gap:20px;max-width:500px;padding:30px 20px}.welcome{display:none}}@media(max-width:540px){.workspace{grid-template-columns:135px 1fr}.sidebar{padding:14px 7px}.compose-button{font-size:12px;padding:11px 3px}.sidebar select{padding:8px 4px;font-size:11px}.folder{padding:10px 6px;font-size:12px;gap:5px}.sidebar-bottom button{padding:8px 4px;font-size:11px}.brand strong{display:none}.appbar{gap:8px}.appbar form button{display:none}.appbar>button{padding:8px}.list-heading{padding:16px 12px}.list-indicator{display:none}.mail-row{padding:16px 12px}.mail-row time{font-size:10px}.sender{max-width:110px}.mail-row.unread::before{left:3px}.workspace.reading{grid-template-columns:1fr}.workspace.reading .sidebar{display:none}#composer{width:100vw;height:100dvh;max-width:100vw;max-height:100dvh;border-radius:0;margin:0}.dialog-heading,.compose-fields{padding:12px}.editor-shell{margin:0 12px}.copy-fields{gap:8px}.copy-fields label{grid-template-columns:1fr;gap:4px}.compose-footer{padding:12px;gap:6px}.compose-footer button,.file-button{font-size:12px;padding:9px}.compose-footer span{width:100%;margin:0}.reader-actions{flex-wrap:wrap}}

.privacy-note{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.privacy-note span{flex:1;min-width:180px}.privacy-note button{font-size:12px;padding:6px 10px;color:#1769cf}.privacy-note button:disabled{cursor:default;opacity:.7}

.reader-actions{flex-wrap:wrap}#move-inbox{margin-left:auto;color:#1769cf}

.mobile-only,#sidebar-backdrop{display:none}
@media(max-width:700px){
  .workspace,.workspace.reading{grid-template-columns:minmax(0,1fr)}
  #folder-toggle{display:inline-flex;align-items:center;justify-content:center;margin:0;flex:0 0 38px;padding:7px;font-size:20px}
  .appbar form{min-width:0}.appbar form>span{display:none}.appbar{gap:8px}
  .workspace .sidebar,.workspace.reading .sidebar{display:none;position:fixed;top:68px;left:0;bottom:0;width:min(300px,86vw);z-index:31;padding:18px 14px;overflow:hidden;box-shadow:12px 0 40px #14283f30}
  .workspace.folders-open .sidebar,.workspace.reading.folders-open .sidebar{display:flex}
  .workspace.folders-open #sidebar-backdrop{display:block;position:fixed;inset:68px 0 0;z-index:30;border:0;border-radius:0;padding:0;background:#14283f65}
  #close-folders{display:block;align-self:flex-end;padding:6px 10px;margin:0 0 14px;font-size:13px}
  .sidebar nav{overflow:auto;min-height:0;flex:1}.sidebar-bottom{padding-top:12px;flex:0 0 auto}
  .sidebar .folder{font-size:14px;padding:12px;gap:12px}.sidebar .sidebar-bottom button{font-size:14px;padding:10px}.sidebar select{font-size:14px;padding:11px}
  .sidebar .compose-button{font-size:15px;margin-bottom:18px;padding:12px}
  .mail-list{border-right:0}.list-heading{padding:18px}.mail-row{padding:17px 20px}.sender{max-width:65vw}.mail-row.unread::before{left:8px}.mail-row time{font-size:12px}
  .message-heading{padding:20px 18px}.message-heading h1{font-size:21px}.privacy-note{margin:0 18px}#message-body{min-height:380px}
  #move-inbox{margin-left:0}.reader-actions button{padding:9px 11px}
}
@media(max-width:400px){
  .appbar .brand{font-size:23px;gap:5px}.appbar .brand span{display:none}.appbar #refresh{padding:8px}
  .compose-footer .file-button{padding:9px 7px}.compose-fields label{grid-template-columns:55px minmax(0,1fr)}
  .copy-fields label{grid-template-columns:minmax(0,1fr)}
}

.search-options{display:flex;align-items:center;gap:8px;padding:10px 14px;background:#f8fafd;border-bottom:1px solid var(--border);font-size:12px}.search-options label{white-space:nowrap}.search-options select{padding:6px;flex:1;min-width:0}.search-options button{padding:6px 8px;font-size:12px}
/* Mobile identity and focus state; keep drawer rows from flex-shrinking. */
@media(max-width:700px){
  .appbar .brand{display:flex;gap:6px;font-size:21px;flex:0 0 auto}
  .appbar .brand strong{display:inline}.appbar .brand span{display:none}
  .appbar:has(#search:focus) .brand{display:none}
  .appbar form{padding-left:8px}.appbar input{padding:10px 4px;font-size:14px}
  .sidebar nav .folder{flex:0 0 auto;min-height:45px;line-height:1.5;white-space:normal}
  .sidebar>button,.sidebar>select,.sidebar>.account-label,.sidebar>.section-label,.sidebar>.sidebar-bottom{flex-shrink:0}
}

.sender-details{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:8px}.sender-details p{margin:0}.sender-details button{font-size:12px;padding:5px 8px;color:#1769cf}#source-dialog{width:min(1000px,96vw);height:min(850px,94dvh)}#source-dialog[open]{display:flex;flex-direction:column}#source-dialog .dialog-heading{flex-shrink:0}#source-subject{overflow-wrap:anywhere}.source-note{margin:14px 20px 8px;color:#65758b;font-size:12px;line-height:1.7}#source-status{margin:0 20px;color:#65758b}#source-content{flex:1;min-height:0;overflow:auto;margin:10px 20px;padding:14px;background:#f4f7fb;border:1px solid var(--border);font:12px/1.7 Consolas,monospace;white-space:pre-wrap;overflow-wrap:anywhere;color:#203047}#source-dialog footer{padding:10px 20px 16px}
@media(max-width:700px){#message-body{min-height:200px}.message-heading{padding-bottom:16px}.reader-actions{position:static}.reader{overscroll-behavior:contain}#source-dialog{width:100vw;height:100dvh;max-width:100vw;max-height:100dvh;margin:0;border-radius:0}}
.source-tabs{display:flex;gap:8px;margin:4px 20px}.source-tabs button{font-size:12px;padding:7px 10px}.source-tabs button[aria-pressed=true]{color:#1769cf;background:#eaf2ff;border-color:#a6c6f0}#source-headers{flex:1;min-height:0;overflow:auto;margin:10px 20px;padding:14px;background:#f8fafd;border:1px solid var(--border);font-size:13px;line-height:1.8}.source-header-row{margin-bottom:10px;overflow-wrap:anywhere}.source-header-row span{white-space:pre-wrap}.source-header-row strong{color:#203047}
.pagination{gap:8px;flex-shrink:0;padding:9px 12px}.page-controls{display:flex;flex-direction:column;align-items:center;gap:6px;min-width:0}#page-jump{display:flex;align-items:center;justify-content:center;gap:5px}#page-jump label{display:block;white-space:nowrap}#page-number{width:68px;padding:5px 6px;font-size:12px}#page-jump button{padding:5px 8px;font-size:12px}@media(max-width:700px){#page-number{font-size:16px;width:75px}.pagination>button{min-width:38px;min-height:38px}#page-jump button{min-height:34px}}
.list-heading{gap:10px}.list-heading>div:first-child{min-width:0}.list-heading h2{overflow-wrap:anywhere}.list-heading-actions{display:flex;flex-direction:column;align-items:flex-end;gap:7px;flex-shrink:0}#mark-all-read{font-size:12px;padding:7px 9px;color:#1769cf}#mark-all-read:disabled{cursor:default}@media(max-width:700px){#mark-all-read{min-height:40px;padding:8px 10px}.list-heading-actions{align-self:center}}
/* Float page controls over the list, leaving room below the last message. */
.mail-list{position:relative}#messages{padding-bottom:105px;min-height:0;overflow-anchor:auto}.mail-list>.pagination{position:absolute;bottom:12px;left:12px;right:12px;z-index:3;border:1px solid #cfdae8;border-radius:12px;background:#ffffffed;box-shadow:0 5px 24px #243e6026;backdrop-filter:blur(10px);padding:9px 10px}.mail-list>.pagination #page-label{font-variant-numeric:tabular-nums}#list-tail{margin:0;padding:25px 12px;font-size:12px}#list-tail button{white-space:normal}