.wk-mail-shell { display:flex; flex-direction:column; gap:10px; min-width:0; }
.wk-mail-toolbar { display:flex; align-items:center; gap:10px; flex-wrap:wrap; }
.wk-mail-toolbar input { flex:1 1 260px; min-height:42px; }
.wk-mail-message { color:#1a7f37; font-size:12px; }
.wk-mail-message.error { color:#b42318; }
.wk-mail-grid { display:grid; grid-template-columns:170px minmax(220px,1fr) minmax(300px,1.25fr); gap:10px; min-width:0; }
.wk-mail-sidebar, .wk-mail-list-panel, .wk-mail-thread-panel { min-width:0; padding:11px; border:1px solid #dfe4ea; border-radius:6px; background:#fff; }
.wk-mail-sidebar h3 { margin:8px 0 5px; font-size:11px; text-transform:uppercase; letter-spacing:.06em; color:#69727e; }
.wk-mail-sidebar h3:first-child { margin-top:0; }
.wk-mail-nav { display:block; width:100%; margin-bottom:3px; padding:7px 8px; text-align:left; border:0; border-radius:4px; background:transparent; color:#27303a; font-size:12px; }
.wk-mail-nav:hover, .wk-mail-nav.active { background:#edf3ff; color:#0b5ed7; }
.wk-mail-label-nav { border-left:3px solid var(--tag-color); }
.wk-mail-panel-head { display:flex; align-items:center; justify-content:space-between; gap:8px; margin-bottom:8px; }
.wk-mail-panel-head h3 { margin:0; font-size:14px; }
.wk-mail-items { display:flex; flex-direction:column; gap:6px; max-height:600px; overflow:auto; }
.wk-mail-item { display:flex; flex-direction:column; align-items:flex-start; gap:4px; width:100%; padding:9px; text-align:left; border:1px solid #e6e8eb; border-radius:5px; background:#fcfcfd; }
.wk-mail-item:hover, .wk-mail-item.active { border-color:#8ab4f8; background:#f7faff; }
.wk-mail-item-top { display:flex; justify-content:space-between; gap:8px; width:100%; font-size:12px; }
.wk-mail-item-top time { color:#69727e; font-size:11px; }
.wk-mail-subject { font-size:12px; line-height:1.3; }
.wk-mail-tag { display:inline-flex; align-items:center; padding:2px 7px; border-radius:9px; border:1px solid color-mix(in srgb, var(--tag-color, #64748b) 35%, white); background:color-mix(in srgb, var(--tag-color, #64748b) 11%, white); color:var(--tag-color, #475569); font-size:10px; }
.wk-mail-no-reply { color:#69727e; font-size:10px; line-height:1.3; }
.wk-mail-empty { margin:0; color:#69727e; font-size:13px; }
.wk-mail-thread { display:flex; flex-direction:column; gap:8px; max-height:440px; overflow:auto; }
.wk-mail-message-card { padding:10px; border:1px solid #e6e8eb; border-radius:5px; background:#fcfcfd; }
.wk-mail-message-meta { display:flex; justify-content:space-between; gap:8px; margin-bottom:6px; font-size:12px; }
.wk-mail-message-meta span { color:#69727e; font-size:11px; }
.wk-mail-message-card p { margin:8px 0 0; white-space:pre-wrap; font-size:13px; line-height:1.45; }
.wk-mail-reply { margin-top:12px; padding-top:11px; border-top:1px solid #eef0f2; }
.wk-mail-reply h4 { margin:0 0 7px; font-size:13px; }
.wk-mail-reply textarea { width:100%; min-height:170px; resize:vertical; }
.wk-mail-reply-actions { display:flex; align-items:center; flex-wrap:wrap; gap:7px; margin-top:7px; }
.wk-mail-reply-actions button { min-height:40px; }
.wk-mail-no-reply-panel { margin-top:12px; padding:10px; border:1px solid #e6e8eb; border-radius:5px; color:#69727e; background:#f7f8fa; font-size:12px; }
@media (max-width:980px){ .wk-mail-grid { grid-template-columns:150px minmax(220px,1fr); } .wk-mail-thread-panel { grid-column:1 / -1; } }
@media (max-width:620px){ .wk-mail-grid { grid-template-columns:1fr; } .wk-mail-sidebar, .wk-mail-thread-panel { grid-column:auto; } .wk-mail-reply-actions button { min-height:44px; } }