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#00000080;cursor:default;animation:lightbox-zoom-in .3s ease}@keyframes lightbox-zoom-in{0%{transform:scale(.9)}to{transform:scale(1)}}.chat-lightbox-close{position:absolute;top:20px;right:20px;width:48px;height:48px;border-radius:50%;background:#ffffff1a;border:none;color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:var(--chat-transition)}.chat-lightbox-close:hover{background:#fff3;transform:rotate(90deg)}@media (max-width: 600px){.chat-header{padding:12px 16px}.chat-header-avatar{width:40px;height:40px;font-size:14px}.chat-user-item{padding:12px}.chat-user-avatar{width:46px;height:46px;font-size:16px}.chat-message-content{max-width:85%}.chat-message-bubble{padding:10px 14px}.chat-input-container{padding:10px 12px 14px}.chat-input-attach,.chat-input-send{width:42px;height:42px}.chat-input-field{padding:6px 14px;min-height:42px}.chat-attachment-menu{left:12px;right:12px;bottom:70px}}@media (prefers-color-scheme: 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