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.upload-overlay{position:absolute;inset:0;background:var(--overlay-medium);display:flex;align-items:center;justify-content:center;color:var(--text-white);font-size:.8rem}.upload-preview-item .remove-upload{position:absolute;top:4px;right:4px;background:var(--bg-input);color:var(--text-primary);border:none;border-radius:50%;width:20px;height:20px;font-size:.75rem;cursor:pointer;display:flex;align-items:center;justify-content:center;line-height:1}.upload-preview-item .remove-upload:active{background:var(--error);color:var(--text-white)}.upload-preview-item.file-card{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.25rem;padding:.5rem;background:var(--bg-secondary)}.upload-preview-item.file-card .file-card-icon{font-size:1.75rem;color:var(--text-secondary);line-height:1}.upload-preview-item.file-card .file-card-name{font-size:.7rem;color:var(--text-primary);text-align:center;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%;padding:0 .25rem}.file-attachment{display:inline-flex;align-items:center;gap:.5rem;background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:8px;padding:.5rem .75rem;margin-top:.25rem;text-decoration:none;color:var(--text-primary);max-width:100%;cursor:pointer}.file-attachment:active{background:var(--bg-hover)}.file-attachment .rc-icon{color:var(--text-secondary);flex-shrink:0}.file-attachment-name{font-size:.85rem;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}.drop-overlay{position:absolute;inset:0;background:var(--accent-faint);border:2px dashed var(--accent);border-radius:8px;display:flex;align-items:center;justify-content:center;color:var(--accent);font-size:1.1rem;font-weight:600;z-index:10;pointer-events:none}@media(hover:hover){.chat-input-wrap .attach-btn:hover,.chat-input-wrap .send-btn:hover{color:var(--text-primary)}.upload-preview-item .remove-upload:hover{background:var(--error);color:var(--text-white)}.file-attachment:hover{background:var(--bg-hover);text-decoration:none}}.action-sheet-overlay{position:fixed;inset:0;background:var(--overlay);z-index:65}.action-sheet{position:fixed;bottom:0;left:0;right:0;background:var(--bg-secondary);border-radius:12px 12px 0 0;z-index:66;transform:translateY(100%);transition:transform .25s ease;max-height:80vh;overflow-y:auto;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none}.action-sheet.open{transform:translateY(0)}.action-sheet-header{padding:.75rem 1rem;border-bottom:1px solid var(--border-subtle);font-size:.8rem;color:var(--text-secondary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.action-sheet-reactions{display:flex;align-items:center;gap:6px;padding:.75rem 1rem;border-bottom:1px solid var(--border-subtle);overflow-x:auto}.action-sheet-reaction-btn{width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:var(--bg-primary);border:1px solid var(--border-subtle);border-radius:8px;cursor:pointer;font-size:1.4rem;flex-shrink:0}.action-sheet-reaction-btn:active{background:var(--bg-active)}.action-sheet-reaction-btn.plus{font-size:1.2rem;color:var(--text-secondary)}.action-sheet-item{display:flex;align-items:center;gap:.75rem;padding:.875rem 1rem;font-size:1rem;color:var(--text-primary);cursor:pointer;width:100%;background:none;border:none;font-family:inherit;text-align:left}.action-sheet-item:active{background:var(--bg-active)}.action-sheet-item .rc-icon{font-size:1.1rem;color:var(--text-secondary);width:1.25rem;text-align:center}.action-sheet-item.danger,.action-sheet-item.danger .rc-icon{color:var(--error)}.reaction-details-overlay{position:fixed;inset:0;background:var(--overlay);z-index:65}.reaction-details{position:fixed;bottom:0;left:0;right:0;background:var(--bg-secondary);border-radius:12px 12px 0 0;z-index:66;transform:translateY(100%);transition:transform .25s ease;max-height:60vh;display:flex;flex-direction:column}.reaction-details.open{transform:translateY(0)}.reaction-details-tabs{display:flex;align-items:center;gap:2px;padding:.5rem .75rem;border-bottom:1px solid var(--border-subtle);overflow-x:auto;flex-shrink:0;-webkit-overflow-scrolling:touch}.reaction-details-tab{display:flex;align-items:center;gap:4px;padding:.4rem .6rem;background:none;border:none;border-bottom:2px solid transparent;border-radius:6px 6px 0 0;cursor:pointer;font-size:1.1rem;flex-shrink:0;color:var(--text-secondary);font-family:inherit}.reaction-details-tab .tab-count{font-size:.8rem}.reaction-details-tab.active{border-bottom-color:var(--accent);color:var(--text-primary)}.reaction-details-tab:active{background:var(--bg-active)}.reaction-details-tab .emoji-custom-inline{width:1.2em;height:1.2em;vertical-align:middle}.reaction-details-users{flex:1;overflow-y:auto;padding:.5rem}.reaction-details-user{display:flex;align-items:center;gap:.75rem;padding:.5rem;border-radius:6px}.reaction-details-avatar{width:32px;height:32px;border-radius:50%;background:var(--accent);display:flex;align-items:center;justify-content:center;font-weight:600;color:var(--text-white);font-size:.8rem;flex-shrink:0;overflow:hidden}.reaction-details-avatar img{width:100%;height:100%;object-fit:cover}.reaction-details-name{font-size:.95rem;color:var(--text-primary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}.mobile-header{display:none;padding:.75rem 1rem;background:var(--bg-secondary);border-bottom:1px solid var(--border);align-items:center;gap:.75rem}.hamburger-btn{background:none;border:none;color:var(--text-tertiary);font-size:1.4rem;cursor:pointer;padding:0;line-height:1}.hamburger-btn:active{color:var(--text-primary)}.sidebar-overlay{display:none;position:fixed;inset:0;background:var(--overlay-light);z-index:20}@media(max-width:768px){.sidebar{position:fixed;left:0;top:0;bottom:0;z-index:30;transform:translate(-100%);transition:transform .2s ease}.sidebar.open{transform:translate(0)}.sidebar-overlay.open{display:block}.chat-main{touch-action:pan-y}.mobile-header{display:flex}.chat-header{display:none}.thread-panel{position:fixed;inset:0;width:100%;z-index:15;border-left:none}.settings-modal{width:100%;max-width:100%;height:100%;max-height:100%;border-radius:0}.settings-layout{flex-direction:column}.settings-tabs{width:auto;flex-direction:row;overflow-x:auto;flex-shrink:0;padding:.375rem .5rem;gap:2px}.settings-tab{white-space:nowrap;text-align:center}.settings-content{flex:1;overflow-y:auto}.chat-input-wrap .send-btn{display:flex}.message{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;-webkit-tap-highlight-color:transparent}.message:hover{background:none}.message:hover .reaction-toolbar{display:none}.code-copy-btn,.link-preview-dismiss{opacity:1}.gif-picker,.emoji-picker{width:calc(100vw - 16px);max-height:60vh;left:8px!important;bottom:8px!important;top:auto!important}.user-list-panel{display:none}}@media(hover:hover){.hamburger-btn:hover{color:var(--text-primary)}}