.chat-layout.svelte-xqlijn{display:flex;height:100%;min-height:0}.conversation-list-panel.svelte-xqlijn{width:280px;min-width:280px;display:flex;flex-direction:column;border-right:var(--border-width) solid var(--color-border);background:var(--color-surface)}.message-thread-panel.svelte-xqlijn{flex:1;min-width:0;display:flex;flex-direction:column}.details-panel.svelte-xqlijn{width:300px;min-width:300px;display:flex;flex-direction:column;border-left:var(--border-width) solid var(--color-border);background:var(--color-surface)}.conversation-item.svelte-12yl1vv{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-4);width:100%;text-align:left;background:transparent;border:none;cursor:pointer;transition:background var(--transition-fast)}.conversation-item.svelte-12yl1vv:hover{background:var(--color-bg)}.conversation-item.selected.svelte-12yl1vv{background:var(--color-primary);color:#fff}.conversation-item.selected.svelte-12yl1vv .timestamp:where(.svelte-12yl1vv),.conversation-item.selected.svelte-12yl1vv .preview:where(.svelte-12yl1vv){color:#fffc}.avatar-container.svelte-12yl1vv{position:relative;flex-shrink:0}.stacked-avatars.svelte-12yl1vv{position:relative;width:40px;height:40px}.stacked-avatars.svelte-12yl1vv .avatar:first-child{position:absolute;top:0;left:0;z-index:1}.stacked-avatars.svelte-12yl1vv .avatar:last-child{position:absolute;bottom:0;right:0;z-index:0}.online-indicator.svelte-12yl1vv{position:absolute;bottom:0;right:0;width:10px;height:10px;background:#22c55e;border:2px solid var(--color-surface);border-radius:50%}.selected.svelte-12yl1vv .online-indicator:where(.svelte-12yl1vv){border-color:var(--color-primary)}.content.svelte-12yl1vv{flex:1;min-width:0;display:flex;flex-direction:column;gap:var(--space-1)}.header.svelte-12yl1vv{display:flex;justify-content:space-between;align-items:baseline;gap:var(--space-2)}.name.svelte-12yl1vv{font-weight:600;font-size:var(--font-size-sm);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.timestamp.svelte-12yl1vv{font-size:var(--font-size-xs);color:var(--color-text-muted);flex-shrink:0}.preview-row.svelte-12yl1vv{display:flex;align-items:center;gap:var(--space-2)}.preview.svelte-12yl1vv{font-size:var(--font-size-xs);color:var(--color-text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1}.unread-indicator.svelte-12yl1vv{width:8px;height:8px;background:var(--color-primary);border-radius:50%;flex-shrink:0}.selected.svelte-12yl1vv .unread-indicator:where(.svelte-12yl1vv){background:#fff}.conversation-list.svelte-edwoq8{display:flex;flex-direction:column;height:100%}.list-header.svelte-edwoq8{display:flex;align-items:center;justify-content:space-between;padding:var(--space-4);height:var(--panel-bar-height);box-sizing:border-box;border-bottom:var(--border-width) solid var(--color-border)}.title.svelte-edwoq8{font-size:var(--font-size-xl);font-weight:700;margin:0}.new-chat-btn.svelte-edwoq8{display:flex;align-items:center;justify-content:center;width:32px;height:32px;background:transparent;border:none;cursor:pointer;color:var(--color-text-muted);transition:color var(--transition-fast)}.new-chat-btn.svelte-edwoq8:hover{color:var(--color-primary)}.search-container.svelte-edwoq8{padding:var(--space-3) var(--space-4)}.search-container.svelte-edwoq8 .search-bar{max-width:none}.list-content.svelte-edwoq8{flex:1;overflow-y:auto}.empty-state.svelte-edwoq8{display:flex;align-items:center;justify-content:center;padding:var(--space-8);color:var(--color-text-muted)}.empty-state.svelte-edwoq8 p:where(.svelte-edwoq8){margin:0;font-size:var(--font-size-sm)}.chat-header.svelte-1vc4gmw{display:flex;align-items:center;justify-content:space-between;padding:var(--space-4);height:var(--panel-bar-height);box-sizing:border-box;border-bottom:var(--border-width) solid var(--color-border);background:var(--color-surface)}.header-left.svelte-1vc4gmw{display:flex;align-items:center;gap:var(--space-3)}.avatar-container.svelte-1vc4gmw{flex-shrink:0}.stacked-avatars.svelte-1vc4gmw{position:relative;width:40px;height:40px}.stacked-avatars.svelte-1vc4gmw .avatar:first-child{position:absolute;top:0;left:0;z-index:1}.stacked-avatars.svelte-1vc4gmw .avatar:last-child{position:absolute;bottom:0;right:0;z-index:0}.header-info.svelte-1vc4gmw{display:flex;flex-direction:column;gap:var(--space-1)}.name.svelte-1vc4gmw{font-size:var(--font-size-base);font-weight:600;margin:0}.member-count.svelte-1vc4gmw{font-size:var(--font-size-xs);color:var(--color-text-muted)}.header-right.svelte-1vc4gmw{display:flex;align-items:center;gap:var(--space-2)}.info-btn.svelte-1vc4gmw{display:flex;align-items:center;justify-content:center;width:36px;height:36px;background:transparent;border:var(--border-width) solid var(--color-border);border-radius:50%;cursor:pointer;color:var(--color-text-muted);transition:all var(--transition-fast)}.info-btn.svelte-1vc4gmw:hover{color:var(--color-primary);border-color:var(--color-primary)}.message.svelte-9857sk{display:flex;gap:var(--space-2);padding:var(--space-1) var(--space-4);max-width:70%}.message.sent.svelte-9857sk{flex-direction:row-reverse;margin-left:auto}.bubble-container.svelte-9857sk{display:flex;flex-direction:column;gap:var(--space-1)}.message.sent.svelte-9857sk .bubble-container:where(.svelte-9857sk){align-items:flex-end}.sender-name.svelte-9857sk{font-size:var(--font-size-xs);font-weight:600;color:var(--color-text-muted);padding-left:var(--space-2)}.bubble.svelte-9857sk{background:var(--color-surface);border:var(--border-width) solid var(--color-border);border-radius:16px;padding:var(--space-3);max-width:100%}.message.sent.svelte-9857sk .bubble:where(.svelte-9857sk){background:var(--color-primary);border-color:var(--color-primary);color:#fff}.content.svelte-9857sk{margin:0;font-size:var(--font-size-sm);line-height:1.4;word-wrap:break-word}.image-attachment.svelte-9857sk{margin-bottom:var(--space-2);border-radius:8px;overflow:hidden}.image-attachment.svelte-9857sk img:where(.svelte-9857sk){display:block;max-width:200px;max-height:200px;width:100%;height:auto;object-fit:cover;background:var(--color-bg)}.reactions.svelte-9857sk{display:flex;gap:var(--space-1);margin-top:var(--space-2)}.reaction.svelte-9857sk{font-size:var(--font-size-sm)}.timestamp.svelte-9857sk{font-size:var(--font-size-xs);color:var(--color-text-muted);padding:0 var(--space-2)}.message.sent.svelte-9857sk .timestamp:where(.svelte-9857sk){text-align:right}.message-composer.svelte-1n5kxc8{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-4);height:var(--panel-bar-height);box-sizing:border-box;border-top:var(--border-width) solid var(--color-border);background:var(--color-surface)}.attachment-btn.svelte-1n5kxc8{display:flex;align-items:center;justify-content:center;width:36px;height:36px;background:var(--color-bg);border:var(--border-width) solid var(--color-border);border-radius:50%;cursor:pointer;color:var(--color-text-muted);transition:all var(--transition-fast)}.attachment-btn.svelte-1n5kxc8:hover{color:var(--color-text);border-color:var(--color-text-muted)}.input.svelte-1n5kxc8{flex:1;height:40px;padding:0 var(--space-4);background:var(--color-bg);border:var(--border-width) solid var(--color-border);border-radius:20px;font-size:var(--font-size-sm);color:var(--color-text);outline:none;transition:border-color var(--transition-fast)}.input.svelte-1n5kxc8::placeholder{color:var(--color-text-muted)}.input.svelte-1n5kxc8:focus{border-color:var(--color-primary)}.send-btn.svelte-1n5kxc8{display:flex;align-items:center;justify-content:center;width:36px;height:36px;background:var(--color-bg);border:var(--border-width) solid var(--color-border);border-radius:50%;cursor:pointer;color:var(--color-text-muted);transition:all var(--transition-fast)}.send-btn.svelte-1n5kxc8:hover:not(:disabled){background:var(--color-primary);border-color:var(--color-primary);color:#fff}.send-btn.svelte-1n5kxc8:disabled{opacity:.5;cursor:not-allowed}.date-separator.svelte-ob2n9m{display:flex;justify-content:center;padding:var(--space-4) 0}.date-label.svelte-ob2n9m{font-size:var(--font-size-xs);color:var(--color-text-muted);background:var(--color-bg);padding:var(--space-1) var(--space-3);border-radius:12px;border:var(--border-width) solid var(--color-border)}.message-thread.svelte-85fcr2{display:flex;flex-direction:column;height:100%;background:var(--color-bg)}.messages-container.svelte-85fcr2{flex:1;overflow-y:auto;padding:var(--space-2) 0}.empty-messages.svelte-85fcr2{display:flex;align-items:center;justify-content:center;height:100%;color:var(--color-text-muted)}.empty-messages.svelte-85fcr2 p:where(.svelte-85fcr2){margin:0;font-size:var(--font-size-sm)}.no-conversation.svelte-85fcr2{display:flex;align-items:center;justify-content:center;height:100%}.chat-details.svelte-qw5lon{display:flex;flex-direction:column;height:100%}.details-header.svelte-qw5lon{display:flex;align-items:center;padding:var(--space-4);height:var(--panel-bar-height);box-sizing:border-box;border-bottom:var(--border-width) solid var(--color-border)}.title.svelte-qw5lon{font-size:var(--font-size-lg);font-weight:700;margin:0}.details-content.svelte-qw5lon{flex:1;overflow-y:auto;padding:var(--space-4)}.section.svelte-qw5lon{padding:var(--space-3) 0;border-bottom:var(--border-width) solid var(--color-border)}.section.svelte-qw5lon:last-child{border-bottom:none}.chat-name-row.svelte-qw5lon{display:flex;align-items:center;justify-content:space-between;gap:var(--space-2)}.chat-name.svelte-qw5lon{font-size:var(--font-size-sm);font-weight:600}.edit-btn.svelte-qw5lon{display:flex;align-items:center;justify-content:center;padding:var(--space-1);background:transparent;border:none;cursor:pointer;color:var(--color-text-muted);transition:color var(--transition-fast)}.edit-btn.svelte-qw5lon:hover{color:var(--color-primary)}.mute-row.svelte-qw5lon{display:flex;align-items:center;justify-content:space-between}.mute-label.svelte-qw5lon{font-size:var(--font-size-sm);font-weight:500}.toggle.svelte-qw5lon{position:relative;width:44px;height:24px;background:var(--color-border);border:none;border-radius:12px;cursor:pointer;transition:background var(--transition-fast)}.toggle.active.svelte-qw5lon{background:var(--color-primary)}.toggle-thumb.svelte-qw5lon{position:absolute;top:2px;left:2px;width:20px;height:20px;background:#fff;border-radius:50%;transition:transform var(--transition-fast)}.toggle.active.svelte-qw5lon .toggle-thumb:where(.svelte-qw5lon){transform:translate(20px)}.section-header.svelte-qw5lon{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-3)}.section-title.svelte-qw5lon{font-size:var(--font-size-sm);font-weight:600;margin:0}.add-btn.svelte-qw5lon{display:flex;align-items:center;gap:var(--space-1);padding:var(--space-1) var(--space-2);background:transparent;border:none;cursor:pointer;color:var(--color-primary);font-size:var(--font-size-xs);font-weight:600;transition:opacity var(--transition-fast)}.add-btn.svelte-qw5lon:hover{opacity:.8}.members-list.svelte-qw5lon{display:flex;flex-direction:column;gap:var(--space-2)}.member-item.svelte-qw5lon{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-2);border-radius:var(--radius)}.member-info.svelte-qw5lon{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}.member-name.svelte-qw5lon{font-size:var(--font-size-sm);font-weight:500}.member-status.svelte-qw5lon{font-size:var(--font-size-xs);color:var(--color-text-muted)}.member-menu-btn.svelte-qw5lon{display:flex;align-items:center;justify-content:center;padding:var(--space-1);background:transparent;border:none;cursor:pointer;color:var(--color-text-muted);transition:color var(--transition-fast)}.member-menu-btn.svelte-qw5lon:hover{color:var(--color-text)}.details-footer.svelte-qw5lon{display:flex;align-items:center;padding:var(--space-4);height:var(--panel-bar-height);box-sizing:border-box;border-top:var(--border-width) solid var(--color-border)}.details-footer.svelte-qw5lon button{width:100%}.modal-backdrop.svelte-11fvj0q{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:100}.modal.svelte-11fvj0q{width:100%;max-width:400px;max-height:80vh;background:var(--color-surface);border:var(--border-width) solid var(--color-border);display:flex;flex-direction:column}.modal-header.svelte-11fvj0q{display:flex;align-items:center;justify-content:space-between;padding:var(--space-4);border-bottom:var(--border-width) solid var(--color-border)}.modal-title.svelte-11fvj0q{font-size:var(--font-size-lg);font-weight:700;margin:0}.close-btn.svelte-11fvj0q{display:flex;align-items:center;justify-content:center;padding:var(--space-1);background:transparent;border:none;cursor:pointer;color:var(--color-text-muted);transition:color var(--transition-fast)}.close-btn.svelte-11fvj0q:hover{color:var(--color-text)}.modal-content.svelte-11fvj0q{flex:1;overflow-y:auto;padding:var(--space-4)}.search-container.svelte-11fvj0q{margin-bottom:var(--space-4)}.search-container.svelte-11fvj0q .search-bar{max-width:none}.selected-preview.svelte-11fvj0q{display:flex;align-items:center;gap:var(--space-2);padding:var(--space-3);background:var(--color-bg);border:var(--border-width) solid var(--color-border);margin-bottom:var(--space-4)}.selected-label.svelte-11fvj0q{font-size:var(--font-size-xs);color:var(--color-text-muted);flex-shrink:0}.selected-names.svelte-11fvj0q{display:flex;flex-wrap:wrap;gap:var(--space-2)}.selected-name.svelte-11fvj0q{font-size:var(--font-size-xs);font-weight:600;color:var(--color-primary)}.students-list.svelte-11fvj0q{display:flex;flex-direction:column;gap:var(--space-1)}.student-item.svelte-11fvj0q{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-3);width:100%;text-align:left;background:transparent;border:var(--border-width) solid transparent;cursor:pointer;transition:all var(--transition-fast)}.student-item.svelte-11fvj0q:hover{background:var(--color-bg)}.student-item.selected.svelte-11fvj0q{background:var(--color-bg);border-color:var(--color-primary)}.student-info.svelte-11fvj0q{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}.student-name.svelte-11fvj0q{font-size:var(--font-size-sm);font-weight:600}.student-handle.svelte-11fvj0q{font-size:var(--font-size-xs);color:var(--color-text-muted)}.check-icon.svelte-11fvj0q{display:flex;align-items:center;justify-content:center;width:24px;height:24px;background:var(--color-primary);color:#fff;border-radius:50%}.empty-state.svelte-11fvj0q{padding:var(--space-8);text-align:center;color:var(--color-text-muted)}.empty-state.svelte-11fvj0q p:where(.svelte-11fvj0q){margin:0;font-size:var(--font-size-sm)}.modal-footer.svelte-11fvj0q{display:flex;justify-content:flex-end;gap:var(--space-3);padding:var(--space-4);border-top:var(--border-width) solid var(--color-border)}.chat-page.svelte-23dtxz{margin:calc(-1 * var(--space-6));height:calc(100% + var(--space-6) * 2);display:flex;flex-direction:column}