.mention-input-container{width:100%;min-width:250px;position:relative}.content-editable-input{word-wrap:break-word;white-space:pre-wrap;text-align:left;border:1px solid #ccc;border-radius:8px;outline:none;padding:8px;font-size:16px;line-height:1.4}.content-editable-input:empty:before{content:attr(data-placeholder);color:#999;pointer-events:none}.mention-chip{color:#fff;background:#007bff;border-radius:4px;padding:0 4px;display:inline-block}.mention-modal{text-align:left;background:#fff;border:1px solid #ccc;border-radius:8px;width:100%;min-width:250px;position:absolute;overflow:hidden;box-shadow:0 2px 8px rgba(0,0,0,.1)}.mention-no-options{padding:8px}.mention-option{cursor:pointer;padding:8px}.mention-option-highlighted{background:#f0f0f0}