:root{--bg-primary: #111b21;--bg-secondary: #202c33;--bg-tertiary: #2a3942;--bg-hover: #2a3942;--bg-active: #2a3942;--text-primary: #e9edef;--text-secondary: #8696a0;--text-muted: #667781;--accent-green: #00a884;--accent-green-hover: #06cf9c;--accent-blue: #53bdeb;--bubble-outgoing: #005c4b;--bubble-incoming: #202c33;--border-color: #222d34;--border-subtle: #2a3942;--header-height: 60px;--sidebar-width: 400px;--input-height: 62px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background-color:var(--bg-primary);color:var(--text-primary);overflow:hidden}#root{width:100vw;height:100vh}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--bg-tertiary);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{0%{opacity:0;transform:translate(-20px)}to{opacity:1;transform:translate(0)}}.fade-in{animation:fadeIn .3s ease}.slide-in{animation:slideIn .3s ease}.contact-item{display:flex;align-items:center;padding:12px 16px;cursor:pointer;transition:background-color .15s;border-bottom:1px solid var(--border-color)}.contact-item:hover{background-color:var(--bg-hover)}.contact-item.active{background-color:var(--bg-active)}.contact-avatar{width:49px;height:49px;border-radius:50%;overflow:hidden;margin-right:13px;flex-shrink:0}.contact-avatar img{width:100%;height:100%;object-fit:cover}.avatar-initials{width:100%;height:100%;background:linear-gradient(135deg,#00a884,#25d366);display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;font-weight:500}.contact-info{flex:1;min-width:0}.contact-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:4px}.contact-name{font-size:16px;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.contact-time{font-size:12px;color:var(--text-muted);flex-shrink:0;margin-left:8px}.contact-preview{display:flex;justify-content:space-between;align-items:center}.last-message{font-size:14px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1}.unread-badge{background-color:var(--accent-green);color:#fff;font-size:11px;font-weight:500;min-width:20px;height:20px;border-radius:10px;display:flex;align-items:center;justify-content:center;padding:0 6px;margin-left:8px}.modal-overlay{position:fixed;inset:0;background-color:#0009;display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .2s ease}.modal-content{background-color:var(--bg-secondary);border-radius:12px;width:90%;max-width:400px;padding:0;overflow:hidden;animation:slideIn .3s ease}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;background-color:var(--bg-tertiary)}.modal-header h2{font-size:18px;font-weight:500;color:var(--text-primary)}.close-btn{background:transparent;border:none;color:var(--text-secondary);cursor:pointer;padding:4px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:background-color .2s}.close-btn:hover{background-color:var(--bg-hover)}form{padding:20px}.form-group{margin-bottom:20px}.form-group label{display:block;font-size:14px;color:var(--text-secondary);margin-bottom:8px}.form-group input{width:100%;padding:12px 16px;background-color:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:8px;color:var(--text-primary);font-size:14px;outline:none;transition:border-color .2s}.form-group input:focus{border-color:var(--accent-green)}.form-group input::placeholder{color:var(--text-muted)}.form-group small{display:block;font-size:12px;color:var(--text-muted);margin-top:6px}.submit-btn{width:100%;padding:12px;background-color:var(--accent-green);color:#fff;border:none;border-radius:8px;font-size:14px;font-weight:500;cursor:pointer;transition:background-color .2s,opacity .2s}.submit-btn:hover:not(:disabled){background-color:var(--accent-green-hover)}.submit-btn:disabled{opacity:.5;cursor:not-allowed}.sidebar{width:var(--sidebar-width);min-width:300px;max-width:500px;height:100vh;background-color:var(--bg-secondary);border-right:1px solid var(--border-color);display:flex;flex-direction:column}.sidebar-header{height:var(--header-height);padding:10px 16px;background-color:var(--bg-tertiary);display:flex;align-items:center;justify-content:space-between}.user-avatar{cursor:pointer}.avatar-placeholder{width:40px;height:40px;border-radius:50%;overflow:hidden}.header-actions{display:flex;align-items:center;gap:8px}.connection-status{display:flex;align-items:center;gap:6px;font-size:12px;padding:4px 10px;border-radius:12px;background-color:var(--bg-secondary)}.connection-status.connected{color:var(--accent-green)}.connection-status.disconnected{color:#f15c6d}.status-dot{width:8px;height:8px;border-radius:50%;background-color:currentColor}.icon-btn{width:40px;height:40px;border:none;background:transparent;color:var(--text-secondary);cursor:pointer;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:background-color .2s}.icon-btn:hover{background-color:var(--bg-hover)}.search-container{padding:8px 12px;background-color:var(--bg-secondary)}.search-box{display:flex;align-items:center;background-color:var(--bg-tertiary);border-radius:8px;padding:0 12px;height:36px}.search-icon{color:var(--text-muted);margin-right:12px;flex-shrink:0}.search-box input{flex:1;border:none;background:transparent;color:var(--text-primary);font-size:14px;outline:none}.search-box input::placeholder{color:var(--text-muted)}.contacts-list{flex:1;overflow-y:auto}.no-contacts{display:flex;flex-direction:column;align-items:center;justify-content:center;height:200px;color:var(--text-muted)}.no-contacts p{margin-bottom:16px}.start-chat-btn{padding:10px 20px;background-color:var(--accent-green);color:#fff;border:none;border-radius:24px;font-size:14px;cursor:pointer;transition:background-color .2s}.start-chat-btn:hover{background-color:var(--accent-green-hover)}.message-bubble-wrapper{display:flex;margin-bottom:2px;animation:fadeIn .2s ease}.message-bubble-wrapper.outgoing{justify-content:flex-end}.message-bubble-wrapper.incoming{justify-content:flex-start}.message-bubble{max-width:65%;padding:6px 7px 8px 9px;border-radius:7.5px;position:relative;box-shadow:0 1px .5px #00000021}.message-bubble.outgoing{background-color:var(--bubble-outgoing);border-top-right-radius:0}.message-bubble.incoming{background-color:var(--bubble-incoming);border-top-left-radius:0}.message-content{display:flex;flex-wrap:wrap;align-items:flex-end}.message-text{font-size:14.2px;line-height:19px;color:var(--text-primary);white-space:pre-wrap;word-break:break-word}.message-meta{display:inline-flex;align-items:center;gap:3px;margin-left:8px;flex-shrink:0;position:relative;top:5px}.message-time{font-size:11px;color:#fff9}.status-icon{margin-left:2px}.status-icon.sent,.status-icon.delivered{color:#fff9}.status-icon.failed{color:#f15c6d}.bubble-tail{position:absolute;top:0;width:8px;height:13px}.bubble-tail.outgoing{right:-8px}.bubble-tail.outgoing:before{content:"";position:absolute;top:0;left:0;border-left:8px solid var(--bubble-outgoing);border-top:6px solid transparent;border-bottom:7px solid transparent}.bubble-tail.incoming{left:-8px}.bubble-tail.incoming:before{content:"";position:absolute;top:0;right:0;border-right:8px solid var(--bubble-incoming);border-top:6px solid transparent;border-bottom:7px solid transparent}.message-bubble-wrapper:first-child .bubble-tail,.message-bubble-wrapper:not(.outgoing)+.message-bubble-wrapper.outgoing .bubble-tail,.message-bubble-wrapper:not(.incoming)+.message-bubble-wrapper.incoming .bubble-tail{display:block}.message-bubble-wrapper.outgoing+.message-bubble-wrapper.outgoing .bubble-tail,.message-bubble-wrapper.incoming+.message-bubble-wrapper.incoming .bubble-tail{display:none}.message-input-container{display:flex;align-items:center;padding:10px 16px;background-color:var(--bg-tertiary);gap:8px}.input-wrapper{flex:1;display:flex;align-items:center;background-color:var(--bg-secondary);border-radius:8px;padding:0 8px;min-height:42px}.emoji-container{position:relative}.input-icon-btn{width:40px;height:40px;border:none;background:transparent;color:var(--text-secondary);cursor:pointer;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:color .2s;flex-shrink:0}.input-icon-btn:hover{color:var(--text-primary)}.emoji-picker{position:absolute;bottom:50px;left:0;background-color:var(--bg-secondary);border-radius:8px;padding:8px;display:grid;grid-template-columns:repeat(6,1fr);gap:4px;box-shadow:0 2px 12px #0000004d;z-index:100;animation:fadeIn .2s ease}.emoji-btn{width:36px;height:36px;border:none;background:transparent;font-size:20px;cursor:pointer;border-radius:6px;display:flex;align-items:center;justify-content:center;transition:background-color .2s}.emoji-btn:hover{background-color:var(--bg-hover)}.input-form{flex:1;display:flex}.input-form input{width:100%;padding:9px 12px;border:none;background:transparent;color:var(--text-primary);font-size:15px;outline:none}.input-form input::placeholder{color:var(--text-muted)}.send-btn{width:42px;height:42px;border:none;background-color:var(--accent-green);color:#fff;cursor:pointer;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:background-color .2s,opacity .2s;flex-shrink:0}.send-btn:hover:not(:disabled){background-color:var(--accent-green-hover)}.send-btn:disabled{background-color:var(--bg-tertiary);color:var(--text-secondary);cursor:default}.chat-window{flex:1;display:flex;flex-direction:column;background-color:var(--bg-primary);background-image:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23182229' fill-opacity='0.6'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E")}.chat-header{height:var(--header-height);padding:10px 16px;background-color:var(--bg-tertiary);display:flex;align-items:center;justify-content:space-between;border-left:1px solid var(--border-color)}.chat-contact-info{display:flex;align-items:center;cursor:pointer}.chat-avatar{width:40px;height:40px;border-radius:50%;overflow:hidden;margin-right:13px}.chat-avatar img{width:100%;height:100%;object-fit:cover}.chat-avatar .avatar-initials{width:100%;height:100%;background:linear-gradient(135deg,#00a884,#25d366);display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px;font-weight:500}.chat-contact-details{display:flex;flex-direction:column}.chat-contact-name{font-size:16px;color:var(--text-primary);font-weight:400}.chat-contact-phone{font-size:13px;color:var(--text-muted)}.chat-header-actions{display:flex;gap:8px}.chat-header-actions .icon-btn{width:40px;height:40px;border:none;background:transparent;color:var(--text-secondary);cursor:pointer;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:background-color .2s}.chat-header-actions .icon-btn:hover{background-color:var(--bg-hover)}.messages-container{flex:1;overflow-y:auto;padding:20px 60px}.messages-wrapper{max-width:100%;margin:0 auto;display:flex;flex-direction:column}.no-messages{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:var(--text-muted);text-align:center;padding:40px}.no-messages p{font-size:18px;margin-bottom:8px;color:var(--text-secondary)}.no-messages span{font-size:14px}.date-divider{display:flex;justify-content:center;margin:12px 0}.date-divider span{background-color:#182229;color:var(--text-muted);font-size:12px;padding:6px 12px;border-radius:8px;box-shadow:0 1px .5px #00000021}.welcome-screen{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;background-color:var(--bg-primary);border-bottom:6px solid var(--accent-green)}.welcome-content{text-align:center;max-width:500px;padding:40px}.welcome-icon{margin-bottom:30px;opacity:.8}.welcome-content h1{font-size:32px;font-weight:300;color:var(--text-primary);margin-bottom:16px}.welcome-content p{font-size:14px;color:var(--text-muted);line-height:1.6;margin-bottom:8px}.welcome-content .hint{margin-bottom:40px}.encryption-note{display:flex;align-items:center;justify-content:center;gap:8px;color:var(--text-muted);font-size:13px;padding-top:20px;border-top:1px solid var(--border-color)}.encryption-note svg{opacity:.6}.app-container{display:flex;width:100%;height:100vh;background-color:var(--bg-primary)}