*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root{--bg-primary: #0f0f0f;--bg-secondary: #1a1a2e;--bg-tertiary: #16213e;--bg-card: #1e1e3a;--bg-input: #252550;--bg-hover: #2a2a5a;--text-primary: #e8e8f0;--text-secondary: #a0a0c0;--text-muted: #6a6a8a;--accent: #7c3aed;--accent-hover: #6d28d9;--accent-light: #a78bfa;--my-bubble: #7c3aed;--their-bubble: #2a2a5a;--border: #2e2e5e;--success: #34d399;--danger: #f87171;--radius: 12px;--radius-sm: 8px;--shadow: 0 4px 24px rgba(0, 0, 0, .3)}html,body{height:100%;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg-primary);color:var(--text-primary);font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased}#root{height:100%}.login-container{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px;background:linear-gradient(135deg,var(--bg-primary) 0%,var(--bg-secondary) 100%)}.login-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:40px;width:100%;max-width:400px;box-shadow:var(--shadow)}.login-header{text-align:center;margin-bottom:32px}.login-header h1{font-size:2rem;font-weight:700;margin-bottom:8px}.login-header p{color:var(--text-secondary);font-size:.9rem}.login-form{display:flex;flex-direction:column;gap:16px}.form-group{display:flex;flex-direction:column;gap:6px}.form-group label{font-size:.85rem;font-weight:500;color:var(--text-secondary)}.form-group input,input[type=text],input[type=password]{background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 14px;color:var(--text-primary);font-size:.95rem;outline:none;transition:border-color .2s}.form-group input:focus,input:focus{border-color:var(--accent)}.error-message{background:#f8717126;color:var(--danger);padding:10px 14px;border-radius:var(--radius-sm);font-size:.85rem}.login-footer{text-align:center;margin-top:20px}.btn-primary{background:var(--accent);color:#fff;border:none;border-radius:var(--radius-sm);padding:10px 20px;font-size:.95rem;font-weight:600;cursor:pointer;transition:background .2s}.btn-primary:hover:not(:disabled){background:var(--accent-hover)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{background:var(--bg-input);color:var(--text-primary);border:1px solid var(--border);border-radius:var(--radius-sm);padding:8px 14px;font-size:.85rem;cursor:pointer;transition:background .2s;width:100%}.btn-secondary:hover{background:var(--bg-hover)}.btn-ghost{background:transparent;color:var(--text-secondary);border:none;padding:8px 14px;font-size:.85rem;cursor:pointer}.btn-ghost:hover{color:var(--text-primary)}.btn-link{background:none;border:none;color:var(--accent-light);cursor:pointer;font-size:.85rem}.btn-link:hover{text-decoration:underline}.btn-icon{background:none;border:none;color:var(--text-secondary);font-size:1.2rem;cursor:pointer;padding:4px;border-radius:4px;transition:color .2s,background .2s}.btn-icon:hover{color:var(--text-primary);background:var(--bg-hover)}.btn-sm{padding:6px 12px;font-size:.8rem}.btn-send{background:var(--accent);color:#fff;border:none;border-radius:50%;width:40px;height:40px;font-size:1.1rem;cursor:pointer;flex-shrink:0;display:flex;align-items:center;justify-content:center;transition:background .2s}.btn-send:hover:not(:disabled){background:var(--accent-hover)}.btn-send:disabled{opacity:.4;cursor:not-allowed}.chat-layout{display:flex;height:100vh;overflow:hidden}.sidebar{width:300px;min-width:300px;background:var(--bg-secondary);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow-y:auto}.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:16px;border-bottom:1px solid var(--border)}.user-info{display:flex;align-items:center;gap:10px}.user-avatar{width:36px;height:36px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.95rem;flex-shrink:0}.user-details{display:flex;flex-direction:column}.user-display-name{font-weight:600;font-size:.9rem}.user-username{color:var(--text-muted);font-size:.75rem}.sidebar-actions{padding:12px 16px;display:flex;flex-direction:column;gap:8px;border-bottom:1px solid var(--border)}.create-room-form{padding:12px 16px;display:flex;flex-direction:column;gap:8px;border-bottom:1px solid var(--border);background:var(--bg-tertiary)}.create-room-form input{width:100%}.form-buttons{display:flex;gap:8px}.browse-rooms{padding:12px 16px;border-bottom:1px solid var(--border);background:var(--bg-tertiary)}.browse-rooms h4{margin-bottom:8px;color:var(--text-secondary);font-size:.8rem;text-transform:uppercase;letter-spacing:.5px}.browse-room-item{display:flex;align-items:center;justify-content:space-between;padding:8px 0;border-bottom:1px solid var(--border)}.browse-room-item:last-child{border-bottom:none}.browse-room-item div{display:flex;flex-direction:column}.browse-room-item small{color:var(--text-muted);font-size:.75rem}.join-password-form{display:flex;align-items:center;gap:4px}.join-password-form input{width:100px;padding:4px 8px;font-size:.8rem;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--bg-input);color:var(--text-primary)}.badge{font-size:.7rem;padding:3px 8px;border-radius:10px;background:var(--accent);color:#fff}.empty-text{color:var(--text-muted);font-size:.85rem;text-align:center;padding:8px 0}.room-list{flex:1;overflow-y:auto;padding:8px 0}.room-list-title{padding:8px 16px;color:var(--text-muted);font-size:.75rem;text-transform:uppercase;letter-spacing:.5px;font-weight:600}.room-list-empty{padding:32px 16px;text-align:center;color:var(--text-muted);font-size:.85rem}.room-item{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;cursor:pointer;transition:background .15s}.room-item:hover{background:var(--bg-hover)}.room-item.active{background:var(--bg-hover);border-left:3px solid var(--accent)}.room-item-info{display:flex;flex-direction:column;flex:1;min-width:0}.room-name{font-weight:500;font-size:.9rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.room-description{color:var(--text-muted);font-size:.75rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.btn-leave{opacity:0;font-size:.8rem}.room-item:hover .btn-leave{opacity:1}.sidebar-toggle{display:none;position:fixed;top:12px;left:12px;z-index:1000;background:var(--bg-card);border:1px solid var(--border);color:var(--text-primary);width:40px;height:40px;border-radius:50%;font-size:1.2rem;cursor:pointer}.chat-main{flex:1;display:flex;flex-direction:column;min-width:0;background:var(--bg-primary)}.no-room-selected{flex:1;display:flex;align-items:center;justify-content:center}.no-room-content{text-align:center;color:var(--text-muted)}.no-room-icon{font-size:4rem;display:block;margin-bottom:16px}.no-room-content h2{font-size:1.3rem;color:var(--text-secondary);margin-bottom:8px}.no-room-content p{font-size:.9rem}.chat-room{display:flex;flex-direction:column;height:100%}.chat-room-header{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-bottom:1px solid var(--border);background:var(--bg-secondary)}.chat-room-info h2{font-size:1.1rem;font-weight:600}.chat-room-desc{color:var(--text-muted);font-size:.8rem}.chat-room-status{display:flex;align-items:center;gap:6px;font-size:.8rem;color:var(--text-muted)}.status-dot{width:8px;height:8px;border-radius:50%}.status-dot.online{background:var(--success)}.status-dot.offline{background:var(--danger)}.online-count{margin-left:8px;background:var(--bg-input);padding:2px 8px;border-radius:10px;font-size:.75rem}.message-list{flex:1;overflow-y:auto;padding:16px 20px;display:flex;flex-direction:column;gap:4px}.loading-more{text-align:center;color:var(--text-muted);font-size:.85rem;padding:12px}.load-more-btn{background:var(--bg-input);border:1px solid var(--border);color:var(--text-secondary);padding:8px 16px;border-radius:var(--radius-sm);cursor:pointer;font-size:.8rem;margin:0 auto 12px}.load-more-btn:hover{background:var(--bg-hover)}.date-separator{display:flex;align-items:center;justify-content:center;margin:16px 0}.date-separator span{background:var(--bg-input);color:var(--text-muted);padding:4px 14px;border-radius:10px;font-size:.75rem;font-weight:500}.message{display:flex;gap:8px;max-width:75%;margin-bottom:2px}.message.mine{align-self:flex-end;flex-direction:row-reverse}.message.theirs{align-self:flex-start}.message-avatar{width:32px;height:32px;border-radius:50%;background:var(--accent-light);color:var(--bg-primary);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.8rem;flex-shrink:0;margin-top:4px}.message-content{display:flex;flex-direction:column}.message-author{font-size:.75rem;font-weight:600;color:var(--accent-light);margin-bottom:2px;padding-left:12px}.message-bubble{padding:8px 14px;border-radius:18px;position:relative;word-break:break-word}.message.mine .message-bubble{background:var(--my-bubble);border-bottom-right-radius:6px}.message.theirs .message-bubble{background:var(--their-bubble);border-bottom-left-radius:6px}.message-bubble p{margin:0;font-size:.9rem;line-height:1.4;white-space:pre-wrap}.message-time{font-size:.65rem;color:#ffffff80;margin-left:10px;margin-top:4px}.message-meta{display:flex;align-items:center;justify-content:flex-end;gap:4px;float:right;margin-left:10px;margin-top:4px}.message-seen{font-size:.7rem;color:#fff6;letter-spacing:-2px}.message-seen.seen{color:#34d399}.typing-indicator{padding:4px 20px;color:var(--text-muted);font-size:.8rem;font-style:italic}.message-input-form{display:flex;align-items:flex-end;gap:10px;padding:12px 20px;border-top:1px solid var(--border);background:var(--bg-secondary)}.input-wrapper{flex:1;position:relative}.message-input{width:100%;background:var(--bg-input);border:1px solid var(--border);border-radius:20px;padding:10px 44px 10px 16px;color:var(--text-primary);font-size:.9rem;font-family:inherit;resize:none;outline:none;min-height:40px;max-height:120px;line-height:1.4;transition:border-color .2s}.message-input:focus{border-color:var(--accent)}.message-input::placeholder{color:var(--text-muted)}.btn-emoji-toggle{position:absolute;right:8px;top:50%;transform:translateY(-50%);background:none;border:none;font-size:1.3rem;cursor:pointer;padding:2px;line-height:1;opacity:.6;transition:opacity .2s}.btn-emoji-toggle:hover{opacity:1}.emoji-picker{position:absolute;bottom:48px;right:0;width:320px;max-height:320px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);z-index:100;display:flex;flex-direction:column;overflow:hidden}.emoji-tabs{display:flex;border-bottom:1px solid var(--border);padding:4px;gap:2px;overflow-x:auto}.emoji-tab{background:none;border:none;font-size:1.1rem;padding:4px 8px;cursor:pointer;border-radius:var(--radius-sm);transition:background .15s}.emoji-tab:hover{background:var(--bg-hover)}.emoji-tab.active{background:var(--accent)}.emoji-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:2px;padding:8px;overflow-y:auto;max-height:260px}.emoji-item{background:none;border:none;font-size:1.3rem;padding:4px;cursor:pointer;border-radius:var(--radius-sm);transition:background .15s;line-height:1;text-align:center}.emoji-item:hover{background:var(--bg-hover);transform:scale(1.2)}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}@media(max-width:768px){.sidebar{position:fixed;top:0;left:0;bottom:0;z-index:999;transform:translate(-100%);transition:transform .3s ease;width:280px;min-width:280px}.sidebar.open{transform:translate(0)}.sidebar-toggle{display:flex;align-items:center;justify-content:center}.chat-room-header{padding-left:60px}.message{max-width:85%}.emoji-picker{width:calc(100vw - 40px);max-width:320px;right:-8px}.emoji-grid{grid-template-columns:repeat(7,1fr)}.join-password-form input{width:80px}.create-room-form input{font-size:.9rem}}