:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}#root{width:100%;height:100vh}.app-container{display:flex;height:100%;width:100%}.main-content{flex:1;padding:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background-color:#f0f2f5;color:#334155;position:relative}.sidebar{width:60px;background-color:#f0f2f5;border-right:1px solid #e0e0e0;padding:1rem 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1rem;font-size:1.2rem;color:#1e293b;font-weight:600}.add-button{width:100%;padding:.75rem;background-color:#2563eb;color:#fff;border:none;border-radius:6px;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:.5rem;font-size:.95rem;font-weight:500;transition:all .2s;margin-bottom:1rem}.add-button:hover{filter:brightness(90%);transform:translateY(-1px)}.box-list{display:flex;flex-direction:column;gap:.75rem;overflow-y:auto;flex:1}.empty-state{text-align:center;color:#94a3b8;padding:2rem 0;font-size:.9rem}.box-item{display:flex;align-items:center;padding:.75rem;background-color:#fff;border:1px solid #e5e7eb;border-radius:8px;cursor:pointer;transition:all .2s}.box-item:hover,.box-item.active{background-color:#f1f5f9;border-color:#cbd5e1;transform:translateY(-1px)}.box-item.active{border-color:#94a3b8;box-shadow:0 2px 4px #0000000d}.box-avatar{width:40px;height:40px;background-color:#f1f5f9;border-radius:50%;margin-right:.75rem;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:1.2rem}.box-content{flex:1;overflow:hidden}.box-title{font-size:.9rem;font-weight:600;color:#1e293b;margin-bottom:.1rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.box-subtitle{font-size:.75rem;color:#64748b;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-sidebar{width:320px;background-color:#fff;border-right:1px solid #e0e0e0;display:flex;flex-direction:column}.chat-header{padding:1rem;background-color:#f8fafc;border-bottom:1px solid #e2e8f0}.search-container{display:flex;align-items:center;background-color:#fff;border:1px solid #e2e8f0;border-radius:20px;padding:.5rem 1rem;margin-bottom:.75rem}.search-icon{color:#94a3b8;margin-right:.5rem}.search-container input{border:none;background:transparent;width:100%;font-size:.9rem;outline:none;color:#1e293b}.filter-tabs{display:flex;gap:.5rem}.filter-tab{padding:.25rem .75rem;border-radius:16px;border:1px solid #e2e8f0;background:white;color:#64748b;font-size:.8rem;cursor:pointer;transition:all .2s}.filter-tab:hover{background-color:#f1f5f9}.filter-tab.active{background-color:#e2e8f0;color:#1e293b;font-weight:500;border-color:#cbd5e1}.chat-list{flex:1;overflow-y:auto}.chat-item{display:flex;padding:.75rem 1rem;cursor:pointer;transition:background-color .2s;border-bottom:1px solid #f1f5f9}.chat-item:hover{background-color:#f8fafc}.chat-item.active{background-color:#f0f2f5}.chat-avatar{width:48px;height:48px;border-radius:50%;background-color:#cbd5e1;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;font-size:1.2rem;margin-right:1rem;flex-shrink:0}.chat-content{flex:1;min-width:0}.chat-top{display:flex;justify-content:space-between;margin-bottom:.25rem}.chat-name{font-weight:600;color:#1e293b;font-size:.95rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-time{font-size:.75rem;color:#94a3b8;white-space:nowrap}.chat-bottom{display:flex;justify-content:space-between;align-items:center}.chat-message{color:#64748b;font-size:.85rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1;margin-right:.5rem}.unread-badge{background-color:#25d366;color:#fff;font-size:.7rem;padding:.1rem .4rem;border-radius:10px;min-width:18px;text-align:center;font-weight:600}.read-status{color:#3b82f6;font-size:.8rem}.welcome-view,.empty-chat-view{text-align:center;max-width:400px}.empty-chat-view h2{color:#1e293b;font-size:1.5rem;margin-bottom:.5rem}.empty-chat-view p{color:#64748b}.stats-card{margin-top:2rem;padding:1.5rem;background-color:#fff;border-radius:12px;box-shadow:0 4px 6px -1px #0000001a;text-align:center}.stat-number{font-size:2.5rem;font-weight:700;color:#2563eb;margin:0}.qr-code-view{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;animation:fadeIn .3s ease-in-out;padding:2rem}.qr-code-view h2{font-size:1.8rem;color:#1e293b;margin-bottom:.5rem;font-weight:300}.qr-code-view p{color:#64748b;margin-bottom:2rem}.qr-container{background:white;padding:1.5rem;border-radius:12px;box-shadow:0 4px 6px -1px #0000001a;margin-bottom:2rem;position:relative;cursor:pointer;border:1px solid #e2e8f0}.qr-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:rgba(37,99,235,.9);display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .2s;border-radius:12px;color:#fff;font-weight:600;font-size:1.1rem}.qr-container:hover .qr-overlay{opacity:1}.instructions{text-align:left;background:white;padding:1.5rem 2rem;border-radius:8px;border:1px solid #e2e8f0;max-width:500px}.instructions ol{margin:0;padding-left:1.5rem;color:#334155}.instructions li{margin-bottom:.5rem;line-height:1.6}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.chat-conversation{width:100%;height:100%;display:flex;flex-direction:column;background-color:#efeae2;background-image:url(https://user-images.githubusercontent.com/15075759/28719144-86dc0f70-73b1-11e7-911d-60d70fcded21.png)}.chat-conversation-header{padding:10px 16px;background-color:#f0f2f5;border-bottom:1px solid #d1d7db;display:flex;align-items:center;gap:1rem;height:60px}.chat-conversation-header .avatar{width:40px;height:40px;border-radius:50%;background-color:#cbd5e1;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600}.chat-conversation-header .name{font-weight:600;color:#111b21}.chat-messages-area{flex:1;overflow-y:auto;padding:1rem 2rem;display:flex;flex-direction:column;gap:.5rem}.message-bubble{max-width:65%;padding:6px 7px 8px 9px;border-radius:7.5px;font-size:14.2px;line-height:19px;position:relative;word-wrap:break-word;box-shadow:0 1px .5px #0b141a21}.message-bubble.sent{align-self:flex-end;background-color:#d9fdd3;color:#111b21}.message-bubble.received{align-self:flex-start;background-color:#fff;color:#111b21}.message-time{font-size:11px;color:#667781;text-align:right;margin-top:2px;float:right;margin-left:10px}.chat-input-area{padding:10px 16px;background-color:#f0f2f5;display:flex;align-items:center;gap:1rem;height:62px}.chat-input-area input{flex:1;padding:9px 12px;border-radius:8px;border:1px solid #ffffff;background-color:#fff;outline:none;font-size:15px;color:#111b21}.context-menu{position:absolute;background:white;border:1px solid #ccc;box-shadow:0 2px 10px #0003;border-radius:4px;z-index:1000;width:150px;display:flex;flex-direction:column}.menu-item{padding:10px;cursor:pointer;font-size:14px;color:#333}.menu-item:hover{background-color:#f0f0f0}.menu-item.delete{color:red}