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var(--border-color);padding:var(--space-md);display:flex;align-items:end;gap:var(--space-sm);position:fixed;bottom:0;left:0;right:0;z-index:100;padding-bottom:var(--space-md)}.message-input-field{flex:1;display:flex;align-items:end;background:var(--background-color);border-radius:var(--radius-lg);padding:var(--space-sm);border:1px solid var(--border-color);transition:border-color .3s ease}.message-input-field:focus-within{border-color:#d1d5db}.message-input-text{flex:1;border:none;outline:none;background:transparent;resize:none;font-family:inherit;font-size:14px;line-height:1.4;max-height:120px;min-height:20px}.message-input-text:-webkit-autofill,.message-input-text:-webkit-autofill:hover,.message-input-text:-webkit-autofill:focus,.message-input-text:-webkit-autofill:active{-webkit-box-shadow:0 0 0 30px var(--background-color) inset!important;-webkit-text-fill-color:var(--text-primary)!important;transition:background-color 5000s ease-in-out 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var(--primary-color);border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;z-index:10;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.drag-message{display:flex;flex-direction:column;align-items:center;gap:var(--space-sm);color:var(--primary-color);font-weight:500}.drag-message span{font-size:14px;text-align:center}.send-btn:hover:not(:disabled){background:var(--primary-dark)}.send-btn:disabled{opacity:.5;cursor:not-allowed}.typing-indicator{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);background:var(--surface-color);border-radius:var(--radius-lg);margin-bottom:var(--space-sm);max-width:80%}.typing-dots{display:flex;gap:2px}.typing-dot{width:6px;height:6px;border-radius:50%;background:var(--text-secondary);animation:typing 1.4s infinite ease-in-out}.typing-dot:nth-child(1){animation-delay:-.32s}.typing-dot:nth-child(2){animation-delay:-.16s}@keyframes typing{0%,80%,to{transform:scale(.7);opacity:.5}40%{transform:scale(1);opacity:1}}.spinner{width:40px;height:40px;border:3px solid var(--border-color);border-top:3px solid var(--primary-color);border-radius:50%;animation:spin 1s linear infinite;margin:0 auto}.spinner-small{width:16px;height:16px;border:2px solid var(--border-color);border-top:2px solid var(--primary-color);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.btn{padding:var(--space-sm) var(--space-md);border:none;border-radius:var(--radius-md);font-size:14px;font-weight:500;cursor:pointer;transition:all .3s ease;display:inline-flex;align-items:center;justify-content:center;gap:var(--space-xs);text-decoration:none}.btn-primary{background:var(--primary-color);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-dark)}.btn-secondary{background:var(--background-color);color:var(--text-primary);border:1px solid var(--border-color)}.btn-secondary:hover:not(:disabled){background:var(--surface-color)}.btn-danger{background:var(--danger-color);color:#fff}.btn-danger:hover:not(:disabled){background:#e03e3e}.btn-ghost{background:transparent;color:var(--text-secondary)}.btn-ghost:hover:not(:disabled){background:var(--background-color);color:var(--text-primary)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-sm{padding:var(--space-xs) var(--space-sm);font-size:12px}.btn-lg{padding:var(--space-md) var(--space-lg);font-size:16px}.chat-list-empty,.conversation-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--space-xl);text-align:center;color:var(--text-secondary)}.chat-list-empty p,.conversation-empty p{margin-bottom:var(--space-md)}.start-chat-btn{background:var(--primary-color);color:#fff;border:none;padding:var(--space-sm) var(--space-md);border-radius:var(--radius-md);cursor:pointer;font-weight:500;transition:background-color .3s ease}.start-chat-btn:hover{background:var(--primary-dark)}@media (max-width: 768px){.dashboard-sidebar{position:fixed;top:60px;left:0;height:calc(100vh - 60px);height:calc(100dvh - 60px);z-index:200;transform:translate(-100%);width:280px}.dashboard-sidebar.open{transform:translate(0)}.sidebar-toggle{display:flex;width:40px;height:40px;top:68px;left:10px}.dashboard-main{width:100%}.message-wrapper{max-width:85%}.chat-item-avatar{width:36px;height:36px;font-size:14px}.chat-item-name{font-size:14px}.chat-item-time{font-size:11px}.chat-item-message{font-size:13px}.conversation-header{padding:var(--space-sm) var(--space-md)}.conversation-avatar{width:36px;height:36px}.conversation-name{font-size:15px}.messages-container{padding:var(--space-sm);padding-bottom:100px}.message-bubble{padding:8px 12px}.message-content{font-size:14px}.message-input{left:0;padding:var(--space-sm) var(--space-md);padding-bottom:20px}.message-input-text{font-size:14px}}@media (max-width: 480px){.dashboard-sidebar{width:100%}.login-container{padding:var(--space-sm)}.login-form{padding:var(--space-lg)}.message-wrapper{max-width:90%}.chat-list-header h2{font-size:15px}.chat-item-avatar{width:32px;height:32px;font-size:13px;margin-right:var(--space-sm)}.chat-item-name{font-size:13px}.chat-item-time{font-size:10px}.chat-item-message{font-size:12px}.conversation-avatar{width:32px;height:32px;font-size:13px}.conversation-name{font-size:14px}.header{height:56px;padding:0 var(--space-sm)}.header-title{font-size:15px}.user-avatar{width:28px;height:28px;font-size:12px}.user-name{font-size:13px}.user-role{font-size:11px}.sidebar-toggle{width:36px;height:36px;top:64px;left:8px;font-size:18px}.messages-container{padding-bottom:120px}.message-input{padding:8px 12px 24px;min-height:60px}.dashboard{height:100vh;height:100dvh;max-height:-webkit-fill-available}}@media (prefers-reduced-motion: reduce){*{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--primary-color);outline-offset:2px}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:var(--background-color)}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-secondary)}.image-lightbox-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#000000e6;display:flex;align-items:center;justify-content:center;z-index:9999;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);animation:lightboxFadeIn .2s ease-out}.image-lightbox-container{position:relative;max-width:90vw;max-height:90vh;display:flex;flex-direction:column;animation:lightboxZoomIn .3s ease-out}.image-lightbox-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-md) var(--space-lg);background:#000c;color:#fff;border-radius:var(--radius-lg) var(--radius-lg) 0 0}.image-lightbox-title{font-size:16px;font-weight:500;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.image-lightbox-actions{display:flex;align-items:center;gap:var(--space-sm)}.lightbox-action-btn{background:transparent;border:none;color:#fff;padding:var(--space-sm);border-radius:var(--radius-full);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease;font-size:18px}.lightbox-action-btn:hover{background:#ffffff1a;transform:scale(1.1)}.image-lightbox-content{position:relative;display:flex;align-items:center;justify-content:center;background:#00000080;border-radius:0 0 var(--radius-lg) var(--radius-lg);overflow:hidden}.lightbox-image{max-width:100%;max-height:80vh;width:auto;height:auto;object-fit:contain;border-radius:0 0 var(--radius-lg) var(--radius-lg)}@keyframes lightboxFadeIn{0%{opacity:0}to{opacity:1}}@keyframes lightboxZoomIn{0%{opacity:0;transform:scale(.8)}to{opacity:1;transform:scale(1)}}@media (max-width: 768px){.image-lightbox-container{max-width:95vw;max-height:95vh}.image-lightbox-header{padding:var(--space-sm) var(--space-md)}.image-lightbox-title{font-size:14px}.lightbox-action-btn{padding:var(--space-xs);font-size:16px}.lightbox-image{max-height:85vh}}