:root{--bg-primary:#0e1621;--bg-secondary:#17212b;--bg-bubble-sent:#2b5278;--bg-bubble-received:#182533;--accent-color:#50a2e9;--text-primary:#f5f5f5;--text-secondary:#7f91a4;--border-color:#242f3d;--danger-color:#e53935;--font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;margin:0;padding:0}html,body,#root{background-color:var(--bg-primary);width:100%;height:100%;color:var(--text-primary);font-family:var(--font-family);overscroll-behavior:none;overflow:hidden}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-thumb{background:#ffffff26;border-radius:3px}::-webkit-scrollbar-track{background:0 0}.safe-top{padding-top:env(safe-area-inset-top,0px)}.safe-bottom{padding-bottom:env(safe-area-inset-bottom,0px)}.vaultchat-layout{background-color:var(--bg-primary);width:100vw;height:100dvh;display:flex;position:relative;overflow:hidden}.auth-fullscreen-container{background-color:var(--bg-primary);justify-content:center;align-items:center;width:100vw;height:100dvh;padding:16px;display:flex;overflow-y:auto}.auth-card{width:100%;max-width:440px;margin:auto}.auth-tabs{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;gap:6px;margin-bottom:20px;padding:4px;display:flex}.auth-tab{text-align:center;color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-radius:8px;flex:1;justify-content:center;align-items:center;gap:8px;padding:10px 16px;font-size:14px;font-weight:600;transition:all .2s;display:flex}.auth-tab.active{background:var(--accent-color);color:#fff;box-shadow:0 2px 8px #00000040}.auth-tab:hover:not(.active){color:var(--text-primary);background:#ffffff0a}.saved-accounts-list{flex-direction:column;gap:8px;max-height:220px;margin-bottom:16px;display:flex;overflow-y:auto}.saved-account-item{background:var(--bg-primary);border:1px solid var(--border-color);cursor:pointer;border-radius:10px;align-items:center;gap:12px;padding:10px 14px;transition:all .2s;display:flex}.saved-account-item:hover{border-color:var(--accent-color)}.saved-account-item.selected{border-color:var(--accent-color);background:#50a2e91a}.saved-account-avatar{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:50%;justify-content:center;align-items:center;width:34px;height:34px;font-size:16px;display:flex}.saved-account-info{text-align:left;flex-direction:column;flex:1;display:flex}.saved-account-info strong{color:var(--text-primary);font-size:14px}.saved-account-info span{color:var(--text-secondary);font-size:11px}.account-switcher-dropdown{background:var(--bg-secondary);border:1px solid var(--border-color);z-index:1000;border-radius:12px;width:290px;padding:10px;position:absolute;top:56px;left:12px;box-shadow:0 10px 30px #00000080}.chat-sidebar{display:none}.chat-area{background-color:var(--bg-primary);flex-direction:column;flex:1;width:100%;max-width:100%;height:100%;display:flex;position:relative;overflow:hidden}.app-header{background-color:var(--bg-secondary);border-bottom:1px solid var(--border-color);z-index:10;flex-shrink:0;justify-content:space-between;align-items:center;width:100%;padding:10px 16px;display:flex}.header-info{align-items:center;gap:12px;min-width:0;display:flex}.group-avatar{color:#fff;background:linear-gradient(135deg,#6c5ce7,#a29bfe);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:40px;height:40px;font-size:16px;font-weight:700;display:flex}.header-titles{min-width:0}.header-titles h2{white-space:nowrap;text-overflow:ellipsis;font-size:16px;font-weight:600;line-height:1.2;overflow:hidden}.header-titles span{color:var(--text-secondary);white-space:nowrap;text-overflow:ellipsis;font-size:12px;display:block;overflow:hidden}.header-actions{flex-shrink:0;align-items:center;gap:10px;display:flex}.icon-btn{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;padding:8px;transition:background .2s,color .2s;display:flex}.icon-btn:hover{color:var(--text-primary);background:#ffffff14}.messages-container{flex-direction:column;flex:1;gap:10px;width:100%;padding:14px 16px;display:flex;overflow:hidden auto}.bubble-row{width:100%;display:flex}.bubble-row.sent{justify-content:flex-end}.bubble-row.received{justify-content:flex-start}.chat-bubble{word-break:break-word;overflow-wrap:break-word;border-radius:12px;max-width:82%;padding:8px 12px;font-size:15px;line-height:1.35;position:relative;box-shadow:0 1px 2px #00000040}.chat-bubble.sent{background-color:var(--bg-bubble-sent);border-bottom-right-radius:4px}.chat-bubble.received{background-color:var(--bg-bubble-received);border-bottom-left-radius:4px}.bubble-meta{color:#fff9;justify-content:flex-end;align-items:center;gap:4px;margin-top:4px;font-size:11px;display:flex}.media-preview-container{border-radius:8px;margin-bottom:6px;position:relative;overflow:hidden}.media-preview-image{object-fit:cover;max-width:100%;max-height:250px;display:block}.input-bar,.input-area{background-color:var(--bg-secondary);border-top:1px solid var(--border-color);flex-shrink:0;align-items:center;gap:8px;width:100%;padding:8px 12px;display:flex}.chat-input{background:var(--bg-primary);border:1px solid var(--border-color);min-width:0;color:var(--text-primary);border-radius:20px;outline:none;flex:1;min-height:40px;max-height:100px;padding:10px 16px;font-family:inherit;font-size:15px}.chat-input:focus{border-color:var(--accent-color)}.send-btn{background-color:var(--accent-color);color:#fff;cursor:pointer;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:40px;height:40px;transition:transform .15s;display:flex}.send-btn:active{transform:scale(.92)}.send-btn:disabled{opacity:.5;cursor:not-allowed}.chat-sidebar{background-color:var(--bg-secondary);flex-direction:column;flex-shrink:0;height:100%;display:flex;overflow:hidden}.sidebar-header{border-bottom:1px solid var(--border-color);flex-shrink:0;justify-content:space-between;align-items:center;height:56px;padding:10px 16px;display:flex}.sidebar-brand{align-items:center;gap:10px;display:flex}.brand-title{letter-spacing:-.3px;color:var(--text-primary);font-size:17px;font-weight:700}.sidebar-user-card{border-bottom:1px solid var(--border-color);cursor:pointer;background:#ffffff05;align-items:center;gap:12px;padding:10px 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var(--border-color);width:320px;min-width:280px;max-width:360px}.chat-bubble{max-width:65%}.messages-container{padding:20px 32px}.input-bar,.input-area{padding:12px 28px}}.modal-overlay{z-index:100;background:#000000b3;justify-content:center;align-items:center;padding:20px;display:flex;position:absolute;inset:0}.modal-content{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:16px;width:100%;max-width:440px;max-height:90vh;padding:24px;overflow-y:auto;box-shadow:0 10px 30px #0009}.modal-content h3{margin-bottom:16px;font-size:18px}.primary-btn{background-color:var(--accent-color);color:#fff;cursor:pointer;border:none;border-radius:10px;width:100%;margin-top:16px;padding:12px;font-size:15px;font-weight:600}.text-field{background:var(--bg-primary);border:1px solid var(--border-color);width:100%;color:var(--text-primary);border-radius:10px;outline:none;margin-top:8px;padding:12px;font-size:15px}.progress-bar-container{background:#ffffff1a;width:100%;height:4px;overflow:hidden}.progress-bar-fill{background:var(--accent-color);height:100%;transition:width .2s}.inline-image-container{cursor:pointer;background:#00000040;border-radius:10px;justify-content:center;align-items:center;max-width:100%;margin-top:6px;display:flex;overflow:hidden;box-shadow:0 2px 8px #0003}.inline-image{object-fit:cover;-webkit-user-select:none;user-select:none;border-radius:10px;width:100%;max-width:360px;height:auto;max-height:380px;transition:opacity .2s,transform .15s;display:block}.inline-image:hover{opacity:.95}.inline-image-placeholder{background:#ffffff0d;border-radius:10px;flex-direction:column;justify-content:center;align-items:center;width:260px;max-width:100%;height:180px;margin-top:6px;display:flex;position:relative;overflow:hidden}.inline-image-placeholder.not-loaded{background:#ffffff08}.shimmer-box{background:linear-gradient(90deg,#ffffff05 25%,#ffffff12 50%,#ffffff05 75%) 0 0/200% 100%;width:100%;height:100%;animation:1.8s infinite shimmer}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.spin-icon{animation:1s linear infinite spin}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.inline-image-error{background:#ef44441f;border:1px solid #ef44444d;border-radius:10px;flex-direction:column;align-items:flex-start;gap:8px;max-width:280px;margin-top:6px;padding:12px 14px;display:flex}.error-content{align-items:center;gap:8px;display:flex}.error-text{color:#ff6b6b;font-size:13px;font-weight:500}.retry-btn{color:var(--text-primary);cursor:pointer;background:#ffffff14;border:1px solid #fff3;border-radius:6px;align-items:center;gap:6px;padding:4px 10px;font-size:12px;transition:background .15s;display:inline-flex}.retry-btn:hover{background:#ffffff26}.fullscreen-viewer-overlay{z-index:9999;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);-webkit-user-select:none;user-select:none;background:#000000f2;flex-direction:column;display:flex;position:fixed;inset:0}.viewer-top-bar{z-index:100;background:linear-gradient(#000000d9,#0000);justify-content:space-between;align-items:center;width:100%;padding:14px 20px;display:flex}.viewer-title{color:#ffffffbf;font-size:14px;font-weight:500}.viewer-actions{align-items:center;gap:12px;display:flex}.viewer-btn{cursor:pointer;background:#ffffff1f;border:none;border-radius:50%;justify-content:center;align-items:center;width:42px;height:42px;transition:background .15s,transform .1s;display:flex}.viewer-btn:hover{background:#ffffff40}.viewer-btn:active{transform:scale(.92)}.viewer-btn.download-highlight{background:var(--accent-color);box-shadow:0 2px 10px #50a2e966}.viewer-btn.download-highlight:hover{background:#3b8fd6}.viewer-content{flex:1;justify-content:center;align-items:center;width:100%;height:100%;padding:16px;display:flex;position:relative;overflow:hidden}.viewer-image{object-fit:contain;-webkit-user-select:none;user-select:none;border-radius:4px;max-width:100%;max-height:100%;box-shadow:0 8px 32px #000c}@media (width<=767px){.vaultchat-layout.view-list 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.15s;display:inline-flex}.reaction-pill:hover{background:#ffffff2e}.reaction-pill.active{border-color:var(--accent-color);background:#50a2e959}.reaction-count{font-size:11px;font-weight:600}.reaction-quick-bar{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:20px;align-items:center;gap:4px;margin-bottom:4px;padding:3px 6px;display:flex;box-shadow:0 4px 14px #00000080}.reaction-quick-btn{cursor:pointer;background:0 0;border:none;border-radius:4px;padding:2px 4px;font-size:18px;transition:transform .15s}.reaction-quick-btn:hover{transform:scale(1.3)}.unread-badge{background:var(--accent-color);color:#fff;text-align:center;border-radius:10px;min-width:18px;margin-left:6px;padding:1px 7px;font-size:11px;font-weight:700;display:inline-block}.edited-badge{color:#ffffff80;margin-right:4px;font-size:10px}.search-header-bar{background:var(--bg-secondary);border-bottom:1px solid var(--border-color);align-items:center;gap:8px;padding:8px 16px;display:flex}.search-input{background:var(--bg-primary);border:1px solid var(--border-color);color:var(--text-primary);border-radius:8px;outline:none;flex:1;padding:6px 12px;font-size:13px}.search-results-info{color:var(--text-secondary);font-size:12px}.typing-dots{animation:1.4s infinite typing;display:inline-block}@keyframes typing{0%{opacity:.2}50%{opacity:1}to{opacity:.2}}.file-card{background:#00000040;border:1px solid #ffffff1f;border-radius:8px;align-items:center;gap:12px;max-width:320px;margin-top:4px;padding:10px 14px;display:flex}.file-card-info{flex:1;min-width:0}.file-card-name{white-space:nowrap;text-overflow:ellipsis;color:var(--text-primary);font-size:13px;font-weight:600;overflow:hidden}.file-card-size{color:var(--text-secondary);margin-top:2px;font-size:11px}.context-menu-box{background:var(--bg-secondary);border:1px solid var(--border-color);z-index:50;border-radius:12px;min-width:140px;padding:6px;position:absolute;box-shadow:0 8px 24px #00000080}.context-menu-item{width:100%;color:var(--text-primary);cursor:pointer;text-align:left;background:0 0;border:none;border-radius:6px;align-items:center;gap:8px;padding:8px 12px;font-size:13px;display:flex}.context-menu-item:hover{background:#ffffff14}.context-menu-item.danger{color:var(--danger-color)}.toast-container{z-index:99999;pointer-events:none;flex-direction:column-reverse;gap:10px;width:calc(100vw - 48px);max-width:360px;display:flex;position:fixed;bottom:24px;right:24px}@media (width<=600px){.toast-container{width:auto;bottom:20px;left:16px;right:16px}}.toast-item{pointer-events:auto;background:var(--bg-secondary);border:1px solid var(--border-color);color:var(--text-primary);border-radius:10px;justify-content:space-between;align-items:center;gap:12px;padding:12px 16px;font-size:13px;font-weight:500;animation:.25s cubic-bezier(.16,1,.3,1) toastSlideIn;display:flex;box-shadow:0 8px 24px #00000073}@keyframes toastSlideIn{0%{opacity:0;transform:translateY(-12px)scale(.97)}to{opacity:1;transform:translateY(0)scale(1)}}.toast-item.toast-success{border-left:4px solid #2ed573}.toast-item.toast-error{border-left:4px solid #ff4757}.toast-item.toast-info{border-left:4px solid var(--accent-color)}.toast-close-btn{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-radius:4px;align-items:center;padding:2px;display:flex}.toast-close-btn:hover{color:var(--text-primary)}.confirm-modal-overlay{-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);z-index:99998;background:#000000b3;justify-content:center;align-items:center;padding:16px;animation:.15s ease-out fadeIn;display:flex;position:fixed;inset:0}.confirm-modal-card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:14px;width:100%;max-width:420px;padding:24px;animation:.18s cubic-bezier(.16,1,.3,1) zoomIn;box-shadow:0 16px 40px #0009}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes zoomIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.confirm-modal-title{color:var(--text-primary);margin-bottom:8px;font-size:16px;font-weight:700}.confirm-modal-desc{color:var(--text-secondary);white-space:pre-wrap;margin-bottom:20px;font-size:13px;line-height:1.5}.confirm-modal-actions{justify-content:flex-end;gap:10px;display:flex}.floating-scroll-btn{z-index:40;background:var(--accent-color);color:#fff;cursor:pointer;border:none;border-radius:20px;align-items:center;gap:6px;padding:8px 14px;font-size:12px;font-weight:600;transition:transform .15s,background .15s;animation:.2s cubic-bezier(.175,.885,.32,1.275) popIn;display:flex;position:absolute;bottom:80px;right:20px;box-shadow:0 4px 14px #0006}@keyframes popIn{0%{opacity:0;transform:scale(.8)}to{opacity:1;transform:scale(1)}}.floating-scroll-btn:hover{background:#3b8cc7;transform:translateY(-2px)}.floating-scroll-badge{color:var(--accent-color);background:#fff;border-radius:10px;padding:1px 6px;font-size:11px;font-weight:700}.connectivity-banner{z-index:35;justify-content:space-between;align-items:center;gap:8px;width:100%;padding:7px 16px;font-size:12px;font-weight:600;display:flex}.connectivity-banner.connecting{color:#fff;background:#d35400}.connectivity-banner.offline{color:#fff;background:#c0392b}.retry-conn-btn{color:#fff;cursor:pointer;background:#ffffff40;border:none;border-radius:4px;padding:3px 8px;font-size:11px;font-weight:600}.retry-conn-btn:hover{background:#fff6}mark.search-highlight{color:#000;background:#f39c12;border-radius:2px;padding:1px 3px;font-weight:700}mark.search-highlight.active-match{color:#fff;background:#e74c3c}.search-nav-btn{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-radius:4px;align-items:center;padding:3px 5px;display:flex}.search-nav-btn:hover{color:var(--text-primary);background:#ffffff14}.search-nav-count{color:var(--text-secondary);white-space:nowrap;margin:0 4px;font-size:11px}.upload-card-banner{border:1px solid var(--accent-color);background:#50a2e91f;border-radius:8px;justify-content:space-between;align-items:center;margin:0 16px 8px;padding:8px 12px;font-size:12px;display:flex}.upload-card-cancel{color:#ff6b6b;cursor:pointer;background:#ffffff1a;border:1px solid #fff3;border-radius:4px;padding:2px 8px;font-size:11px}.upload-card-cancel:hover{background:#ff6b6b33}.load-more-container{justify-content:center;padding:12px 0 6px;display:flex}.load-more-btn{border:1px solid var(--border-color);color:var(--text-secondary);cursor:pointer;background:#ffffff0f;border-radius:16px;padding:5px 14px;font-size:11px;transition:all 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