@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";:root{--primary-blue: #2196f3;--primary-blue-dark: #1976d2;--primary-blue-light: #bbdefb;--background-dark: #0b141a;--background-medium: #111b21;--background-light: #1f2c34;--background-chat: #0b141a;--background-message-in: #1f2c34;--background-message-out: #0a4f8b;--border-color: #2a3942;--text-primary: #e9edef;--text-secondary: #8696a0;--text-tertiary: #667781;--hover-bg: #2a3942;--active-bg: #2a3942;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 12px;--spacing-lg: 16px;--spacing-xl: 24px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .2);--shadow-md: 0 2px 8px rgba(0, 0, 0, .3);--shadow-lg: 0 4px 16px rgba(0, 0, 0, .4);--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .35s ease}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:var(--background-dark);color:var(--text-primary);overflow:hidden}#root{width:100vw;height:100vh;overflow:hidden}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--text-tertiary);border-radius:8px}::-webkit-scrollbar-thumb:hover{background:var(--text-secondary)}.app-container{display:flex;height:100vh;background:var(--background-dark)}.sidebar{width:380px;background:var(--background-medium);border-right:1px solid var(--border-color);display:flex;flex-direction:column;transition:var(--transition-normal)}.sidebar-header{padding:var(--spacing-lg);background:var(--background-light);border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between;min-height:70px}.sidebar-header h1{font-size:24px;font-weight:600;color:var(--text-primary);margin:0}.sidebar-actions{display:flex;gap:var(--spacing-md)}.icon-button{background:transparent;border:none;color:var(--text-secondary);cursor:pointer;padding:var(--spacing-sm);border-radius:var(--radius-md);transition:var(--transition-fast);display:flex;align-items:center;justify-content:center;flex-shrink:0}.icon-button:hover{background:var(--hover-bg);color:var(--text-primary)}.search-container{padding:var(--spacing-md);background:var(--background-medium);border-bottom:1px solid var(--border-color)}.search-input{width:100%;padding:var(--spacing-sm) var(--spacing-lg);background:var(--background-light);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);font-size:14px;outline:none;transition:var(--transition-fast)}.search-input::placeholder{color:var(--text-tertiary)}.search-input:focus{border-color:var(--primary-blue);background:var(--background-medium)}.group-list{flex:1;overflow-y:auto;overflow-x:hidden}.group-item{display:flex;align-items:center;padding:var(--spacing-md) var(--spacing-lg);cursor:pointer;transition:var(--transition-fast);border-bottom:1px solid var(--border-color);gap:var(--spacing-md)}.group-item:hover{background:var(--hover-bg)}.group-item.active{background:var(--active-bg);border-left:4px solid var(--primary-blue)}.group-avatar{width:50px;height:50px;border-radius:50%;background:linear-gradient(135deg,var(--primary-blue),var(--primary-blue-dark));display:flex;align-items:center;justify-content:center;font-weight:600;font-size:18px;color:#fff;flex-shrink:0}.group-info{flex:1;min-width:0}.group-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-xs)}.group-name{font-weight:500;color:var(--text-primary);font-size:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.group-time{font-size:12px;color:var(--text-tertiary);flex-shrink:0}.group-preview{font-size:14px;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:flex;align-items:center;gap:var(--spacing-xs)}.unread-badge{background:var(--primary-blue);color:#fff;font-size:12px;font-weight:600;padding:2px 8px;border-radius:12px;min-width:20px;text-align:center}.chat-area{flex:1;display:flex;flex-direction:column;background:var(--background-chat)}.chat-header{padding:var(--spacing-lg);background:var(--background-light);border-bottom:1px solid var(--border-color);display:flex;align-items:center;gap:var(--spacing-md);min-height:70px}.chat-avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--primary-blue),var(--primary-blue-dark));display:flex;align-items:center;justify-content:center;font-weight:600;color:#fff}.chat-info{flex:1}.chat-title{font-size:18px;font-weight:500;color:var(--text-primary);margin-bottom:2px}.chat-subtitle{font-size:13px;color:var(--text-secondary)}.chat-actions{display:flex;align-items:center;gap:var(--spacing-sm);flex-wrap:nowrap;flex-shrink:0}.summary-tab-button{padding:8px 10px;border:none;border-bottom:2px solid transparent;background:transparent;cursor:pointer;font-size:12px;font-weight:600;color:var(--text-secondary);transition:var(--transition-fast)}.summary-tab-button:hover{color:var(--text-primary)}.summary-tab-button.active{border-bottom-color:#16a34a;color:#16a34a;font-weight:700}.summary-quick-button{padding:7px 10px;border-radius:6px;border:1px solid #d1d5db;background:#fff;cursor:pointer;font-size:12px;transition:var(--transition-fast)}.summary-quick-button:hover{border-color:#9ca3af;box-shadow:0 1px 2px #00000014}.summary-quick-button:active{transform:translateY(1px)}.messages-container{flex:1;overflow-y:auto;padding:var(--spacing-xl);background-image:linear-gradient(to bottom,transparent 0%,rgba(11,20,26,.7) 100%),repeating-linear-gradient(45deg,rgba(255,255,255,.01) 0px,rgba(255,255,255,.01) 10px,transparent 10px,transparent 20px)}.message-date-divider{display:flex;justify-content:center;margin:var(--spacing-lg) 0}.date-badge{background:var(--background-light);color:var(--text-secondary);padding:var(--spacing-xs) var(--spacing-md);border-radius:var(--radius-md);font-size:12px;font-weight:500;box-shadow:var(--shadow-sm)}.message{display:flex;margin-bottom:var(--spacing-md);animation:messageSlide .3s ease}@keyframes messageSlide{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message.incoming{justify-content:flex-start}.message.outgoing{justify-content:flex-end}.message-bubble{max-width:65%;padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);position:relative;word-wrap:break-word}.message.incoming .message-bubble{background:var(--background-message-in);border-top-left-radius:var(--radius-sm)}.message.outgoing .message-bubble{background:var(--background-message-out);border-top-right-radius:var(--radius-sm)}.message-sender{font-weight:600;color:var(--primary-blue);font-size:13px;margin-bottom:var(--spacing-xs)}.message-content{color:var(--text-primary);font-size:14px;line-height:1.5;margin-bottom:var(--spacing-xs)}.message-media{margin-bottom:var(--spacing-xs);max-width:300px}.message-media img{width:100%;height:auto;border-radius:var(--radius-md);cursor:pointer;max-height:400px;object-fit:contain;background:#0000001a}.message-footer{display:flex;align-items:center;justify-content:flex-end;gap:var(--spacing-xs);font-size:11px;color:var(--text-tertiary)}.message-time{color:var(--text-tertiary)}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:var(--text-secondary);gap:var(--spacing-lg)}.empty-icon{width:100px;height:100px;background:var(--background-light);border-radius:50%;display:flex;align-items:center;justify-content:center}.empty-state h2{font-size:24px;font-weight:500;color:var(--text-secondary)}.empty-state p{font-size:14px;color:var(--text-tertiary);text-align:center;max-width:400px}.loading-container{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;gap:var(--spacing-lg)}.loading-spinner{width:50px;height:50px;border:4px solid var(--border-color);border-top-color:var(--primary-blue);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-text{color:var(--text-secondary);font-size:14px}.error-container{padding:var(--spacing-lg);margin:var(--spacing-lg);background:#ef44441a;border:1px solid rgba(239,68,68,.3);border-radius:var(--radius-md);color:#fca5a5}.error-title{font-weight:600;margin-bottom:var(--spacing-sm)}.mobile-back-button{display:none}@media (max-width: 768px){.app-container .sidebar{width:100%;display:flex;border-right:none}.app-container .chat-area{display:none;width:100%}.app-container.chat-active .sidebar{display:none}.app-container.chat-active .chat-area{display:flex}.mobile-back-button{display:flex;margin-right:var(--spacing-sm);min-width:44px;min-height:44px;padding:10px;background-color:#ffffff0d;flex-shrink:0;cursor:pointer;pointer-events:auto}.message-bubble{max-width:85%}}.hidden{display:none}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.gap-sm{gap:var(--spacing-sm)}.gap-md{gap:var(--spacing-md)}.gap-lg{gap:var(--spacing-lg)}