:root{--primary: #6366f1;--primary-hover: #4f46e5;--bg-main: #f8fafce6;--bg-card: rgba(255, 255, 255, .7);--bg-sidebar: rgba(248, 250, 252, .85);--text-main: #1e293b;--text-muted: #64748b;--border-color: rgba(226, 232, 240, .6);--glass-border: rgba(255, 255, 255, .4);--input-bg: rgba(248, 250, 252, .8);--shadow: 0 10px 25px -5px rgba(0, 0, 0, .05), 0 8px 10px -6px rgba(0, 0, 0, .05);--sidebar-width: 280px;--user-1: #3b82f6;--user-2: #10b981;--user-3: #f59e0b;--user-4: #ef4444;--user-5: #8b5cf6;--user-6: #ec4899}[data-theme=dark]{--primary: #818cf8;--primary-hover: #6366f1;--bg-main: #0f172ae6;--bg-card: rgba(30, 41, 59, .7);--bg-sidebar: rgba(15, 23, 42, .85);--text-main: #f8fafc;--text-muted: #94a3b8;--border-color: rgba(51, 65, 85, .4);--glass-border: rgba(255, 255, 255, .05);--input-bg: rgba(15, 23, 42, .6)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{0%{transform:translate(-100%)}to{transform:translate(0)}}@keyframes overlayFade{0%{opacity:0}to{opacity:1}}.animate-spin{animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.btn-primary:disabled{opacity:.7;cursor:not-allowed;display:flex;justify-content:center;align-items:center;gap:8px}.chat-window-container{width:100%;height:100%;height:100dvh;display:flex;flex-direction:column;overflow:hidden;position:relative;background:transparent;padding-top:env(safe-area-inset-top,0);padding-bottom:env(safe-area-inset-bottom,0);-webkit-overflow-scrolling:touch}@media (min-width: 1024px){.chat-window-container{width:95vw;max-width:1400px;height:90vh;margin:auto;flex-direction:row;border:1px solid var(--border-color);box-shadow:0 20px 50px -10px #00000026}}.sidebar-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:999;animation:overlayFade .3s ease}@media (min-width: 1024px){.sidebar-overlay{display:none}}.chat-sidebar{position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-width);background:var(--bg-sidebar);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-right:1px solid var(--border-color);z-index:1000;display:flex;flex-direction:column;padding:calc(24px + env(safe-area-inset-top,0)) 24px calc(24px + env(safe-area-inset-bottom,0));transform:translate(-100%);transition:transform .3s cubic-bezier(.4,0,.2,1)}.chat-sidebar.open{transform:translate(0)}@media (min-width: 1024px){.chat-sidebar{position:relative;transform:translate(0);background:transparent}}.sidebar-brand{display:flex;align-items:center;justify-content:space-between;margin-bottom:40px}.brand-l{display:flex;align-items:center;gap:12px;font-size:1.5rem;font-weight:700;color:var(--text-main)}.mobile-close{padding:8px;border-radius:8px;background:var(--input-bg);border:1px solid var(--border-color);color:var(--text-muted);cursor:pointer}@media (min-width: 1024px){.mobile-close{display:none}}.sidebar-menu{flex:1;display:flex;flex-direction:column;gap:8px}.menu-item{display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:12px;color:var(--text-muted);font-weight:500;cursor:pointer;transition:.2s}.menu-item:hover{background:var(--input-bg);color:var(--text-main)}.menu-item.active{background:var(--primary);color:#fff;box-shadow:0 4px 12px #6366f14d}.sidebar-footer{margin-top:auto;padding-top:24px;border-top:1px solid var(--border-color)}.btn-logout{width:100%;padding:12px;border-radius:10px;border:1px solid var(--border-color);background:transparent;color:var(--text-muted);font-weight:600;display:flex;align-items:center;justify-content:center;gap:8px;cursor:pointer;transition:.2s}.btn-logout:hover{background:#fee2e2;color:#ef4444;border-color:#fca5a5}.creator-footer{margin-top:20px;padding-top:16px;border-top:1px dashed var(--border-color);display:flex;flex-direction:column;gap:4px}.creator-details{font-size:.75rem;color:var(--text-muted)}.creator-details span{font-weight:700;color:var(--text-main);letter-spacing:.02em}.github-link{display:flex;align-items:center;gap:6px;font-size:.75rem;color:var(--primary);text-decoration:none;font-weight:600;transition:.2s}.github-link:hover{color:var(--primary-hover);transform:translate(4px)}.footer-actions{display:flex;align-items:center;gap:12px}.room-display{flex:1;display:flex;align-items:center;gap:8px;padding:10px 14px;background:var(--input-bg);border:1px solid var(--border-color);border-radius:12px;font-size:.85rem}.room-display .room-id{font-family:monospace;font-weight:700;color:var(--primary)}.btn-logout-plain{width:42px;height:42px;display:flex;align-items:center;justify-content:center;border-radius:12px;border:1px solid #f49292;background:#ffd7d7;color:#ef4444;cursor:pointer;transition:.2s}.btn-logout-plain:hover{background:#ef4444;color:#fff;transform:rotate(-2deg)}.chat-main{flex:1;display:flex;flex-direction:column;min-width:0;min-height:0;overflow:hidden;background:var(--bg-card);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.chat-header{height:72px;flex-shrink:0;padding:0 24px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border-color)}.chat-header-left{display:flex;align-items:center;gap:16px}.mobile-toggle{padding:8px;border-radius:8px;background:var(--input-bg);border:1px solid var(--border-color);color:var(--text-muted);cursor:pointer}.chat-room-info h3{font-size:1.1rem;font-weight:700}.chat-room-info{cursor:pointer;padding:4px 8px;border-radius:8px;transition:.2s}.chat-room-info:hover{background:var(--input-bg)}.room-badge{font-size:.75rem;color:var(--text-muted);display:flex;align-items:center;gap:4px}.tab-view-content{flex:1;padding:32px 24px;overflow-y:auto;animation:fadeIn .4s ease-out}@media (min-width: 768px){.tab-view-content{padding:48px}}.view-header{display:flex;align-items:center;gap:16px;margin-bottom:32px}.mobile-toggle{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;background:var(--input-bg);border:1px solid var(--border-color);color:var(--text-main);cursor:pointer;transition:.2s}.mobile-toggle:hover{background:var(--border-color);color:var(--primary)}@media (min-width: 1024px){.mobile-toggle{display:none}}.view-header h2{font-size:1.5rem;font-weight:700;letter-spacing:-.02em}.search-bar-ui{display:flex;align-items:center;gap:12px;padding:16px 20px;background:var(--input-bg);border:1px solid var(--border-color);border-radius:16px;margin-bottom:24px;transition:.2s}.search-bar-ui:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px #6366f11a}.search-bar-ui input{flex:1;background:transparent;border:none;color:var(--text-main);font-size:1rem}.search-status{padding:24px;text-align:center;color:var(--text-muted);font-style:italic}.search-suggestions h4{font-size:.875rem;color:var(--text-muted);margin-bottom:12px;text-transform:uppercase;letter-spacing:.05em}.filter-chips{display:flex;flex-wrap:wrap;gap:8px}.chip{padding:6px 14px;background:var(--input-bg);border:1px solid var(--border-color);border-radius:20px;font-size:.85rem;color:var(--text-main);cursor:pointer;transition:.2s}.chip:hover{border-color:var(--primary);color:var(--primary)}.form-card{padding:32px;max-width:500px}.form-helper{font-size:.85rem;color:var(--text-muted);margin:12px 0 24px;line-height:1.5}.settings-grid{display:grid;gap:16px}@media (min-width: 1024px){.settings-grid{grid-template-columns:repeat(2,1fr)}}.settings-section{padding:24px;display:flex;flex-direction:column;gap:16px}.settings-section h3{font-size:.75rem;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted)}.setting-item{display:flex;align-items:center;justify-content:space-between}.setting-info{display:flex;align-items:center;gap:16px}.setting-icon{width:40px;height:40px;background:var(--input-bg);border-radius:12px;display:flex;align-items:center;justify-content:center;color:var(--primary)}.setting-label{font-weight:600}.setting-desc{font-size:.8rem;color:var(--text-muted)}.theme-toggle-btn{width:50px;height:26px;background:var(--border-color);border-radius:13px;border:none;position:relative;cursor:pointer;transition:.3s}.theme-toggle-btn.active{background:var(--primary)}.toggle-thumb{width:20px;height:20px;background:#fff;border-radius:50%;position:absolute;top:3px;left:3px;transition:.3s;display:flex;align-items:center;justify-content:center;color:#fbbf24}.theme-toggle-btn.active .toggle-thumb{left:27px;color:var(--primary)}.status-badge{padding:4px 10px;background:#dcfce7;color:#166534;border-radius:8px;font-size:.7rem;font-weight:800}.status-badge.secondary{background:#e0f2fe;color:#0369a1}.header-actions{display:flex;align-items:center;gap:12px}.room-id-chip{display:none;align-items:center;gap:8px;padding:6px 12px;background:var(--input-bg);border:1px solid var(--border-color);border-radius:20px;font-family:monospace;font-weight:600;cursor:pointer;transition:.2s}.room-id-chip:hover{border-color:var(--primary)}@media (min-width: 640px){.room-id-chip{display:flex}}.icon-btn{padding:8px;border-radius:50%;background:transparent;border:none;color:var(--text-muted);cursor:pointer;transition:.2s}.icon-btn:hover{background:var(--input-bg);color:var(--primary)}.share-btn{background:var(--primary);color:#fff}.share-btn:hover{background:var(--primary-hover);color:#fff}.user-profile-wrapper{position:relative}.user-profile{display:flex;align-items:center;gap:10px;padding:4px 4px 4px 12px;background:var(--input-bg);border:1px solid var(--border-color);border-radius:30px;cursor:pointer;transition:.2s}.user-profile:hover{border-color:var(--primary);background:var(--border-color)}.user-dropdown{position:absolute;top:calc(100% + 12px);right:0;width:200px;background:var(--bg-card);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border:1px solid var(--border-color);border-radius:12px;box-shadow:0 10px 25px -5px #0000001a,0 8px 10px -6px #0000001a;z-index:1000;padding:12px;animation:fadeIn .2s ease-out}.dropdown-info{padding:4px 8px 12px}.dropdown-user-name{font-weight:700;font-size:.95rem;color:var(--text-main)}.dropdown-user-status{font-size:.75rem;color:#10b981;font-weight:600}.dropdown-divider{height:1px;background:var(--border-color);margin:8px 0}.dropdown-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:8px;color:var(--text-main);font-size:.9rem;font-weight:600;transition:.2s;width:100%;border:none;background:transparent;cursor:pointer;text-align:left}.dropdown-item:hover{background:var(--input-bg);color:var(--primary)}.dropdown-item.logout{color:#ef4444}.dropdown-item.logout:hover{background:#fee2e2;color:#ef4444}.desktop-only{display:none}@media (min-width: 768px){.desktop-only{display:block}}.avatar-circle{width:32px;height:32px;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700}.message-container{flex:1;overflow-y:auto;padding:24px;display:flex;flex-direction:column;gap:16px}.message-wrapper{max-width:85%;display:flex;flex-direction:column}.message-wrapper.sent{align-self:flex-end}.message-bubble{padding:12px 16px;border-radius:18px;font-size:.95rem;line-height:1.5}.sent .message-bubble{background:var(--primary);color:#fff;border-bottom-right-radius:4px}.received .message-bubble{background:var(--bg-main);color:var(--text-main);border:1px solid var(--border-color);border-bottom-left-radius:4px}.message-wrapper.system{align-self:center;max-width:100%}.system .message-bubble{background:transparent;color:var(--text-muted);font-size:.8rem;font-style:italic;padding:4px}.message-meta{font-size:.75rem;color:var(--text-muted);margin-top:4px;display:flex;gap:8px}.sent .message-meta{justify-content:flex-end}.typing-indicator{padding:8px 16px;display:flex;align-items:center;gap:12px;font-size:.85rem;color:var(--text-muted);font-style:italic;animation:fadeIn .3s ease}.typing-dots{display:flex;gap:4px}.typing-dots span{width:6px;height:6px;background:var(--text-muted);border-radius:50%;opacity:.4;animation:typingBounce 1s infinite alternate}.typing-dots span:nth-child(2){animation-delay:.2s}.typing-dots span:nth-child(3){animation-delay:.4s}@keyframes typingBounce{to{transform:translateY(-4px);opacity:1}}.reply-quote{padding:8px 12px;background:#0000000d;border-left:3px solid var(--primary);border-radius:6px;margin-bottom:8px;font-size:.82rem;cursor:pointer;transition:all .2s ease;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);width:100%}.sent .reply-quote{background:#ffffff26;border-left-color:#fffc;color:#fff}.sent .reply-quote .reply-author{color:#fff!important;opacity:.9;text-shadow:0 1px 2px rgba(0,0,0,.1)}.sent .reply-quote .reply-text{color:#fff;opacity:.85}.received .reply-quote{background:#0000000a}.reply-quote:hover{background:#00000014}[data-theme=dark] .received .reply-quote{background:#ffffff0f}[data-theme=dark] .reply-quote:hover{background:#ffffff1a}.reply-author{font-weight:700;font-size:.75rem;margin-bottom:2px;text-transform:capitalize;color:var(--primary)}.reply-text{color:var(--text-main);display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.3;opacity:.8}.message-wrapper{position:relative;touch-action:pan-y;overflow:visible;-webkit-user-select:text;user-select:text}.swipe-indicator{position:absolute;right:-50px;top:50%;transform:translateY(-50%);color:var(--primary);opacity:0;transition:opacity .2s}.message-bubble-container{transition:transform .1s linear;width:100%;display:flex;flex-direction:column}.sent .message-bubble-container{align-items:flex-end}.reply-action{position:absolute;top:50%;transform:translateY(-50%);right:-40px;padding:8px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:50%;color:var(--text-muted);cursor:pointer;opacity:0;transition:.2s;z-index:10}.message-wrapper.sent .reply-action{right:auto;left:-40px}.message-wrapper:hover .reply-action{opacity:1}.reply-action:hover{color:var(--primary);border-color:var(--primary);transform:translateY(-50%) scale(1.1)}.reply-preview-container{padding:12px 16px;background:var(--bg-card);border-top:1px solid var(--border-color);border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between;animation:slideInUp .3s ease;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}@keyframes slideInUp{0%{transform:translateY(100%);opacity:0}to{transform:translateY(0);opacity:1}}.reply-preview-content{border-left:3px solid var(--primary);padding-left:12px;flex:1}.reply-preview-content .reply-author{font-size:.75rem;font-weight:700;margin-bottom:2px}.reply-preview-content .reply-text{font-size:.82rem;opacity:.8}.message-input-area{padding:16px 24px calc(16px + env(safe-area-inset-bottom,0));background:var(--bg-card);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);position:sticky;bottom:0;z-index:10;border-top:1px solid var(--border-color);flex-shrink:0}.input-container{display:flex;align-items:center;gap:12px;padding:8px 16px;background:var(--input-bg);border:1px solid var(--border-color);border-radius:24px}.input-container input{flex:1;background:transparent;border:none;color:var(--text-main);padding:8px 0}.send-btn{background:var(--primary);color:#fff;padding:8px;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:.2s}.send-btn:hover{background:var(--primary-hover);transform:scale(1.05)}.qr-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:2000;display:flex;align-items:center;justify-content:center;padding:20px;animation:fadeIn .3s ease}.qr-card{width:100%;max-width:360px;padding:32px;text-align:center;position:relative;background:var(--bg-card);border-radius:24px;box-shadow:0 25px 50px -12px #00000040}.qr-close{position:absolute;top:16px;right:16px;padding:8px;border-radius:50%;border:none;background:var(--input-bg);color:var(--text-muted);cursor:pointer}.qr-wrapper{margin:24px 0;padding:16px;background:#fff;border-radius:16px;display:inline-block}.room-code-display{font-family:monospace;font-size:1.25rem;font-weight:700;color:var(--primary);letter-spacing:2px;margin-top:16px}.btn-primary{width:100%;padding:14px;border-radius:14px;background:var(--primary);color:#fff;font-weight:700;border:none;display:flex;align-items:center;justify-content:center;gap:10px;cursor:pointer;transition:.2s}.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px)}.btn-secondary{width:100%;padding:14px;border-radius:12px;border:1px solid var(--border-color);background:var(--bg-card);color:var(--text-main);font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:8px;transition:.2s}.btn-secondary:hover{background:var(--input-bg);border-color:var(--primary)}.members-overlay{position:absolute;top:80px;left:24px;width:250px;background:var(--bg-card);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border:1px solid var(--border-color);border-radius:16px;box-shadow:var(--shadow);z-index:1001;padding:16px;animation:fadeIn .2s ease}.members-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;padding-bottom:8px;border-bottom:1px solid var(--border-color)}.members-list{max-height:200px;overflow-y:auto;display:flex;flex-direction:column;gap:8px}.member-item{display:flex;align-items:center;gap:8px;font-size:.9rem;color:var(--text-main)}.member-status-dot{width:8px;height:8px;background:#10b981;border-radius:50%}.login-wrapper{width:100vw;height:100vh;height:100dvh;display:flex;flex-direction:column;align-items:center;justify-content:center;background:transparent;padding:24px;overflow:auto}.login-wrapper:before{content:"";position:fixed;top:-200px;right:-200px;width:500px;height:500px;background:radial-gradient(circle,rgba(99,102,241,.12),transparent 60%);pointer-events:none}.login-wrapper:after{content:"";position:fixed;bottom:-200px;left:-200px;width:500px;height:500px;background:radial-gradient(circle,rgba(139,92,246,.08),transparent 60%);pointer-events:none}.login-container{width:100%;max-width:400px;background:#fff;border:1px solid #e2e8f0;border-radius:24px;padding:36px 32px;box-shadow:0 4px 6px -1px #0000000d,0 20px 40px -10px #6366f11f;display:flex;flex-direction:column;gap:24px;animation:fadeIn .4s ease;position:relative;z-index:1}[data-theme=dark] .login-container{background:#1e293b;border-color:#33415599;box-shadow:0 4px 6px -1px #0000004d,0 20px 40px -10px #6366f133}.login-header{display:flex;flex-direction:column;align-items:flex-start;gap:6px}.logo-container{width:48px;height:48px;background:linear-gradient(135deg,#6366f1,#818cf8);border-radius:14px;display:flex;align-items:center;justify-content:center;margin-bottom:8px;box-shadow:0 4px 14px #6366f159;color:#fff}.login-header h1{font-size:1.65rem;font-weight:800;color:#0f172a;letter-spacing:-.03em;line-height:1.2;margin:0}[data-theme=dark] .login-header h1{color:#f8fafc}.login-header h1 span{color:#6366f1}.login-header p{font-size:.875rem;color:#64748b;margin:0;font-weight:500}.mode-toggle-row{display:flex;background:#f1f5f9;border-radius:12px;padding:4px;gap:4px}[data-theme=dark] .mode-toggle-row{background:#0f172a}.mode-toggle-btn{flex:1;display:flex;align-items:center;justify-content:center;gap:6px;padding:9px 12px;border:none;border-radius:8px;background:transparent;color:#64748b;font-size:.85rem;font-weight:600;cursor:pointer;transition:all .2s;font-family:inherit}.mode-toggle-btn.active{background:#fff;color:#6366f1;box-shadow:0 1px 4px #0000001a}[data-theme=dark] .mode-toggle-btn.active{background:#1e293b;color:#818cf8}.mode-toggle-btn:not(.active):hover{color:#475569;background:#ffffff80}.login-form{display:flex;flex-direction:column;gap:16px}.input-group{display:flex;flex-direction:column;gap:6px}.input-group label{font-size:.8rem;font-weight:700;color:#475569;letter-spacing:.03em;display:flex;align-items:center;gap:4px}[data-theme=dark] .input-group label{color:#94a3b8}.input-field-wrapper{position:relative;display:flex;align-items:center;border:1.5px solid #e2e8f0;border-radius:12px;background:#f8fafc;transition:border-color .2s,box-shadow 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