.teacher-mail-workspace{display:flex;min-height:55vh}.teacher-mail-list{flex:1;min-width:0}.mail-row.selected{background:var(--blue-bg);box-shadow:inset 3px 0 var(--accent-blue)}
.teacher-mail-detail-pane{position:fixed;z-index:30;top:0;right:0;bottom:0;height:100dvh;min-width:320px;max-width:760px;padding:24px;overflow-y:auto;overscroll-behavior:contain;background:var(--bg-primary);border-left:1px solid var(--border-default);box-shadow:-18px 0 45px rgba(0,0,0,.18)}
.teacher-mail-detail-pane>header{position:sticky;z-index:2;top:-24px;display:flex;align-items:center;justify-content:space-between;margin:-24px -24px 0;padding:24px 24px 14px;background:var(--bg-primary);border-bottom:1px solid var(--border-default)}
.teacher-mail-detail-pane h2{margin:24px 0 18px}.teacher-mail-detail-body{margin-top:28px;white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.65}.teacher-mail-resize-handle{position:absolute;left:-5px;top:0;bottom:0;width:10px;cursor:col-resize;touch-action:none}.teacher-mail-resize-handle:after{content:"";position:absolute;left:4px;top:0;bottom:0;width:2px;background:transparent}.teacher-mail-resize-handle:hover:after{background:var(--accent-blue)}
@media(max-width:900px){.teacher-mail-detail-pane{width:min(92vw,520px)!important;max-width:none}.teacher-mail-resize-handle{display:none}}
@media(max-width:600px){.teacher-mail-detail-pane{width:100vw!important;padding:18px}.teacher-mail-detail-pane>header{top:-18px;margin:-18px -18px 0;padding:18px}}