:root{--bg: #0e1621;--bg-secondary: #17212b;--bg-tertiary: #232e3c;--bg-hover: #2b5278;--text: #ffffff;--text-secondary: #708499;--accent: #5288c1;--accent-hover: #3a77b0;--bubble-out: #2b5278;--bubble-in: #182533;--border: #101921;--green: #4fae4e;--radius: 12px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);height:100vh;overflow:hidden}#root{height:100vh}.auth-screen{display:flex;align-items:center;justify-content:center;height:100vh;background:var(--bg)}.auth-card{background:var(--bg-secondary);border-radius:16px;padding:40px;width:380px;max-width:90vw}.auth-logo{text-align:center;font-size:28px;font-weight:600;margin-bottom:24px;color:var(--accent)}.auth-tabs{display:flex;margin-bottom:24px;border-radius:8px;overflow:hidden;background:var(--bg-tertiary)}.auth-tabs button{flex:1;padding:10px;border:none;background:transparent;color:var(--text-secondary);cursor:pointer;font-size:14px;transition:.2s}.auth-tabs button.active{background:var(--accent);color:#fff}.auth-card form{display:flex;flex-direction:column;gap:12px}.auth-card input{padding:12px 16px;border:1px solid var(--bg-tertiary);border-radius:8px;background:var(--bg-tertiary);color:var(--text);font-size:15px;outline:none;transition:border .2s}.auth-card input:focus{border-color:var(--accent)}.auth-error{color:#e57373;font-size:14px;text-align:center}.auth-submit{padding:12px;border:none;border-radius:8px;background:var(--accent);color:#fff;font-size:15px;cursor:pointer;transition:.2s}.auth-submit:hover{background:var(--accent-hover)}.auth-submit:disabled{opacity:.5}.app{display:flex;height:100vh}.sidebar{width:380px;min-width:380px;display:flex;flex-direction:column;border-right:1px solid var(--border);background:var(--bg-secondary)}.main-area{flex:1;display:flex;flex-direction:column;background:var(--bg)}.chat-list{flex:1;display:flex;flex-direction:column;overflow:hidden}.chat-list-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:var(--bg-secondary);border-bottom:1px solid var(--border)}.chat-list-header-info{display:flex;align-items:center;gap:10px}.chat-list-header-name{font-weight:600;font-size:16px}.new-chat-btn{width:40px;height:40px;border:none;border-radius:50%;background:var(--accent);color:#fff;font-size:22px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:.2s}.new-chat-btn:hover{background:var(--accent-hover)}.chat-list-items{flex:1;overflow-y:auto}.chat-item{display:flex;align-items:center;gap:12px;padding:10px 16px;cursor:pointer;transition:.15s}.chat-item:hover{background:var(--bg-tertiary)}.chat-item.active{background:var(--bg-hover)}.chat-item-info{flex:1;overflow:hidden}.chat-item-name{font-weight:500;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-item-preview{font-size:13px;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.avatar{width:46px;height:46px;border-radius:50%;background:var(--accent);display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:600;flex-shrink:0;color:#fff}.avatar.sm{width:36px;height:36px;font-size:14px}.sidebar-footer{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;border-top:1px solid var(--border)}.me-info{display:flex;align-items:center;gap:10px}.me-name{font-weight:500;font-size:14px}.logout-btn{padding:6px 14px;border:1px solid var(--bg-tertiary);border-radius:6px;background:transparent;color:var(--text-secondary);cursor:pointer;font-size:13px;transition:.2s}.logout-btn:hover{border-color:#e57373;color:#e57373}.chat-view{flex:1;display:flex;flex-direction:column;height:100%}.chat-header{display:flex;align-items:center;gap:12px;padding:10px 16px;background:var(--bg-secondary);border-bottom:1px solid var(--border)}.back-btn{display:none;border:none;background:transparent;color:var(--text);font-size:22px;cursor:pointer}.chat-header-info{flex:1}.chat-header-name{font-weight:600;font-size:16px}.chat-header-subtitle{font-size:13px;color:var(--text-secondary)}.info-btn{border:none;background:transparent;color:var(--text-secondary);font-size:20px;cursor:pointer}.members-panel{padding:12px 16px;background:var(--bg-secondary);border-bottom:1px solid var(--border);max-height:300px;overflow-y:auto}.members-panel h4{margin-bottom:10px;font-size:14px;color:var(--text-secondary)}.member-item{display:flex;align-items:center;gap:10px;padding:6px 0}.member-name{font-size:14px;font-weight:500}.member-status{font-size:12px;color:var(--text-secondary)}.member-you{margin-left:auto;font-size:12px;color:var(--accent)}.messages-container{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:4px}.message{display:flex;flex-direction:column;max-width:70%}.message.out{align-self:flex-end;align-items:flex-end}.message.in{align-self:flex-start}.message-sender{font-size:13px;color:var(--accent);margin-bottom:2px;margin-left:12px}.message-bubble{padding:8px 14px;border-radius:var(--radius);position:relative;word-wrap:break-word;cursor:pointer}.message.out .message-bubble{background:var(--bubble-out);border-bottom-right-radius:4px}.message.in .message-bubble{background:var(--bubble-in);border-bottom-left-radius:4px}.message-text{font-size:15px;line-height:1.4;white-space:pre-wrap}.message-reply{font-size:12px;color:var(--text-secondary);margin-bottom:4px;padding-left:8px;border-left:2px solid var(--accent)}.message-file{font-size:14px}.message-file a{color:var(--accent);text-decoration:none}.message-file a:hover{text-decoration:underline}.file-size{color:var(--text-secondary);font-size:12px}.message-meta{display:flex;align-items:center;gap:4px;font-size:11px;color:var(--text-secondary);margin-top:2px;float:right}.message-read{color:var(--green)}.message-delete{border:none;background:transparent;color:var(--text-secondary);cursor:pointer;font-size:12px;opacity:0;transition:.2s}.message-bubble:hover .message-delete{opacity:.7}.reply-preview{padding:8px 16px;background:var(--bg-secondary);border-top:1px solid var(--border);font-size:13px;color:var(--text-secondary);cursor:pointer}.message-input-bar{display:flex;align-items:center;gap:8px;padding:10px 16px;background:var(--bg-secondary);border-top:1px solid var(--border)}.attach-btn{border:none;background:transparent;font-size:22px;cursor:pointer;color:var(--text-secondary);padding:4px}.message-input-form{flex:1;display:flex;gap:8px}.message-input{flex:1;padding:10px 16px;border:none;border-radius:20px;background:var(--bg-tertiary);color:var(--text);font-size:15px;outline:none}.send-btn{width:40px;height:40px;border:none;border-radius:50%;background:var(--accent);color:#fff;font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:.2s}.send-btn:hover{background:var(--accent-hover)}.empty-state{text-align:center;color:var(--text-secondary);padding:40px 20px;font-size:14px}.empty-chat{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;color:var(--text-secondary)}.empty-chat-icon{font-size:64px}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:100}.modal{background:var(--bg-secondary);border-radius:12px;width:420px;max-width:90vw;max-height:80vh;display:flex;flex-direction:column}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border)}.modal-header h3{font-size:18px}.modal-header button{border:none;background:transparent;color:var(--text-secondary);font-size:20px;cursor:pointer}.modal-body{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:12px}.modal-body input{padding:10px 14px;border:1px solid var(--bg-tertiary);border-radius:8px;background:var(--bg-tertiary);color:var(--text);font-size:14px;outline:none}.modal-body input:focus{border-color:var(--accent)}.chat-type-toggle{display:flex;gap:8px}.chat-type-toggle button{flex:1;padding:8px;border:1px solid var(--bg-tertiary);border-radius:8px;background:transparent;color:var(--text-secondary);cursor:pointer;font-size:14px}.chat-type-toggle button.active{background:var(--accent);color:#fff;border-color:var(--accent)}.search-results{max-height:300px;overflow-y:auto}.search-result-item{display:flex;align-items:center;gap:10px;padding:8px;border-radius:8px;cursor:pointer;transition:.15s}.search-result-item:hover{background:var(--bg-tertiary)}.search-result-item.selected{background:var(--bg-hover)}.modal-footer{display:flex;gap:8px;padding:16px 20px;border-top:1px solid var(--border);justify-content:flex-end}.modal-footer button{padding:8px 20px;border:1px solid var(--bg-tertiary);border-radius:8px;background:transparent;color:var(--text);cursor:pointer;font-size:14px}.modal-footer button.primary{background:var(--accent);border-color:var(--accent);color:#fff}::-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-secondary)}@media (max-width: 768px){.sidebar{width:100%;min-width:0}.main-area,.app.mobile-chat .sidebar{display:none}.app.mobile-chat .main-area{display:flex}.back-btn{display:block}.message{max-width:85%}}.settings-section{margin-bottom:20px}.settings-section h4{font-size:14px;color:var(--text-secondary);margin-bottom:10px;text-transform:uppercase;letter-spacing:.5px}.settings-row{display:flex;align-items:center;gap:12px;padding:8px 0}.settings-toggle{display:flex;align-items:center;gap:10px;padding:8px 0;cursor:pointer;font-size:14px;color:var(--text)}.settings-toggle input{width:18px;height:18px;accent-color:var(--accent)}.settings-save-btn{margin-top:8px;padding:8px 20px;border:none;border-radius:8px;background:var(--accent);color:#fff;cursor:pointer;font-size:14px}.settings-label{display:block;margin-top:10px;margin-bottom:4px;font-size:13px;color:var(--text-secondary)}.settings-input{width:100%;box-sizing:border-box;padding:8px 10px;border:1px solid var(--bg-tertiary);border-radius:8px;background:var(--bg-tertiary);color:var(--text);font-size:14px;font-family:inherit;resize:vertical}.settings-input:focus{outline:none;border-color:var(--accent)}.settings-success{margin-top:8px;font-size:13px;color:#2e7d32}.logout-btn.full{width:100%;padding:10px;margin-top:10px;border:1px solid #e57373;border-radius:8px;background:transparent;color:#e57373;cursor:pointer;font-size:14px}.settings-btn{border:none;background:transparent;color:var(--text-secondary);font-size:20px;cursor:pointer;padding:4px 8px}.theme-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(100px,1fr));gap:8px}.theme-card{border-radius:10px;padding:12px 8px;text-align:center;cursor:pointer;transition:.2s;font-size:13px}.theme-card:hover{transform:scale(1.05)}.theme-preview{width:40px;height:40px;border-radius:8px;margin:0 auto 6px;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700}.sticker-picker{position:absolute;bottom:60px;left:16px;right:16px;max-height:300px;background:var(--bg-secondary);border-radius:12px 12px 0 0;border:1px solid var(--border);display:flex;flex-direction:column;z-index:50}.sticker-picker-header{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;border-bottom:1px solid var(--border);font-weight:600;font-size:14px;color:var(--text)}.sticker-pack-tabs{display:flex;gap:4px;padding:8px;overflow-x:auto}.sticker-pack-tabs button{min-width:36px;height:36px;border:none;border-radius:8px;background:var(--bg-tertiary);font-size:18px;cursor:pointer}.sticker-grid{flex:1;display:grid;grid-template-columns:repeat(auto-fill,minmax(64px,1fr));gap:4px;padding:8px;overflow-y:auto}.sticker-item{width:64px;height:64px;object-fit:contain;cursor:pointer;border-radius:8px;padding:4px}.sticker-item:hover{background:var(--bg-tertiary)}.call-modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#000000d9;display:flex;align-items:center;justify-content:center;z-index:200}.call-modal{display:flex;flex-direction:column;align-items:center;gap:16px;padding:40px}.call-avatar{width:100px;height:100px;border-radius:50%;background:var(--accent);display:flex;align-items:center;justify-content:center;font-size:48px;animation:pulse 1.5s infinite}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.1)}}.call-name{font-size:24px;font-weight:600;color:#fff}.call-status{font-size:16px;color:var(--text-secondary)}.call-actions{display:flex;gap:30px;margin-top:20px}.call-btn{width:60px;height:60px;border:none;border-radius:50%;font-size:28px;cursor:pointer;display:flex;align-items:center;justify-content:center}.call-btn.accept{background:#4fae4e;color:#fff}.call-btn.reject{background:#e53935;color:#fff}.message-sticker{max-width:160px;max-height:160px;object-fit:contain}.chat-item-channel-badge{font-size:10px;color:var(--text-secondary);background:var(--bg-tertiary);padding:1px 6px;border-radius:4px;margin-left:4px}.emoji-picker{position:absolute;bottom:60px;right:16px;max-height:200px;background:var(--bg-secondary);border-radius:12px;border:1px solid var(--border);padding:8px;display:grid;grid-template-columns:repeat(8,1fr);gap:2px;overflow-y:auto;z-index:50}.emoji-item{width:32px;height:32px;display:flex;align-items:center;justify-content:center;font-size:20px;cursor:pointer;border-radius:4px}.emoji-item:hover{background:var(--bg-tertiary)}