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18px}}:root{--primary:#dc2626;--primary-dark:#b91c1c;--primary-light:#fee2e2;--primary-hover:#ef4444;--bg:#fff;--bg-secondary:#f9fafb;--bg-chat:#e8ecf0;--text:#111827;--text-secondary:#6b7280;--text-light:#9ca3af;--border:#e5e7eb;--shadow:0 1px 2px #0000000f;--shadow-lg:0 4px 12px #00000014;--radius:12px;--radius-sm:8px;--radius-msg:18px;--sidebar-w:340px;--header-h:64px}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,sans-serif;line-height:1.5}input,button,textarea{font-family:inherit}.auth-container{background:var(--bg-chat);justify-content:center;align-items:center;min-height:100vh;display:flex}.auth-card{background:var(--bg);border-radius:var(--radius);box-shadow:var(--shadow-lg);text-align:center;width:100%;max-width:380px;padding:48px 40px}.auth-logo{margin-bottom:32px}.logo-icon,.auth-logo-image{object-fit:contain;width:104px;height:104px;margin:0 auto 10px;display:block}.auth-logo h1{color:var(--primary);font-size:24px;font-weight:700}.auth-logo p{color:var(--text-secondary);margin-top:4px;font-size:14px}.auth-form{flex-direction:column;gap:12px;display:flex}.form-group input{border:1.5px solid var(--border);border-radius:var(--radius-sm);outline:none;width:100%;padding:12px 16px;font-size:14px;transition:border-color .2s}.form-group input:focus{border-color:var(--primary)}.auth-switch{color:var(--text-secondary);margin-top:20px;font-size:13px}.auth-switch a{color:var(--primary);font-weight:500;text-decoration:none}.auth-switch a:hover{text-decoration:underline}.error{color:var(--primary);font-size:13px}.btn{border-radius:var(--radius-sm);cursor:pointer;border:none;padding:12px 24px;font-size:14px;font-weight:600;transition:all .15s}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-primary:disabled{cursor:default;background:#d1d5db}.icon-btn{cursor:pointer;color:var(--text-secondary);background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;padding:8px;transition:all .15s;display:flex}.icon-btn:hover{background:var(--primary-light);color:var(--primary)}.icon-btn.send{color:var(--primary);font-size:18px}.app{height:100vh}.chat-layout{height:100vh;display:flex}.chat-layout.mobile{position:relative;overflow:hidden}.chat-layout.mobile .sidebar.hidden,.chat-layout.mobile .main.hidden{display:none!important}.sidebar{width:var(--sidebar-w);background:var(--bg);border-right:1px solid var(--border);flex-direction:column;flex-shrink:0;display:flex}.sidebar-top{border-bottom:1px solid var(--border)}.sidebar-header{justify-content:space-between;align-items:center;padding:16px 16px 12px;display:flex}.sidebar-header h2{color:var(--primary);font-size:20px;font-weight:700}.new-chat-row{gap:8px;padding:0 16px 12px;display:flex}.new-chat-trigger{border:1px solid var(--border);background:var(--bg-secondary);color:var(--text);cursor:pointer;border-radius:999px;flex:1;padding:8px 10px;font-size:12px}.new-chat-trigger.secondary{background:#fff}.new-chat-row input{border:1.5px solid var(--border);border-radius:var(--radius-sm);outline:none;flex:1;padding:10px 14px;font-size:13px}.new-chat-row input:focus{border-color:var(--primary)}.new-chat-channel{color:var(--text-secondary);white-space:nowrap;align-items:center;gap:6px;font-size:12px;display:inline-flex}.channel-search-box{flex-direction:column;gap:8px;padding:0 16px 12px;display:flex}.channel-search-row{gap:8px;display:flex}.channel-search-row input{border:1.5px solid var(--border);border-radius:var(--radius-sm);outline:none;flex:1;min-width:0;padding:10px 14px;font-size:13px}.channel-search-row input:focus{border-color:var(--primary)}.channel-search-btn{min-width:92px;padding:0 14px}.channel-search-results{flex-direction:column;gap:8px;max-height:220px;display:flex;overflow:auto}.channel-search-item{border:1px solid var(--border);cursor:pointer;text-align:left;background:#fff;border-radius:14px;justify-content:space-between;align-items:center;gap:12px;width:100%;padding:10px 12px;display:flex}.channel-search-item:hover{background:#fafafa;border-color:#f1c9c9}.channel-search-left{flex:1;align-items:center;gap:10px;min-width:0;display:flex}.channel-search-info{flex:1;min-width:0}.channel-search-name{color:var(--text);white-space:nowrap;text-overflow:ellipsis;font-size:13px;font-weight:700;overflow:hidden}.channel-search-meta{align-items:center;gap:8px;min-width:0;margin-top:2px;display:flex}.channel-search-status{color:var(--text-secondary);font-size:11px}.channel-search-desc{color:var(--text-secondary);white-space:nowrap;text-overflow:ellipsis;margin-top:2px;font-size:12px;overflow:hidden}.channel-search-action{color:var(--primary);flex-shrink:0;font-size:12px;font-weight:700}.conv-list{flex:1;overflow-y:auto}.favorites-pinned{z-index:3;background:var(--bg);border-bottom:1px solid var(--border);position:sticky;top:0;box-shadow:0 4px 12px #0f172a0d}.favorites-pinned .conv-item{border-bottom:0}.chat-folders{border-bottom:1px solid var(--border);scrollbar-width:none;align-items:center;gap:6px;padding:10px 12px 8px;display:flex;overflow-x:auto}.chat-folders::-webkit-scrollbar{display:none}.chat-folder-tab,.chat-folder-add{border:1px solid var(--border);color:var(--text-secondary);background:var(--bg-secondary);cursor:pointer;border-radius:999px;flex:none;padding:6px 10px;font-size:12px;font-weight:700}.chat-folder-tab:hover,.chat-folder-add:hover{color:var(--primary);border-color:#f3a4a4}.chat-folder-tab.active{color:#fff;background:var(--primary);border-color:var(--primary)}.chat-folder-tab.custom{text-overflow:ellipsis;white-space:nowrap;max-width:112px;overflow:hidden}.chat-folder-add{width:30px;padding:5px;font-size:18px;line-height:1}.folder-empty{text-align:center;color:var(--text-secondary);padding:28px 16px;font-size:13px}.folder-editor-overlay{z-index:1400;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#0f172a7a;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.folder-editor{background:var(--bg);border-radius:18px;width:min(460px,100%);max-height:min(700px,100dvh - 40px);padding:20px;overflow:auto;box-shadow:0 24px 80px #0f172a47}.folder-editor-header{justify-content:space-between;align-items:center;margin-bottom:14px;display:flex}.folder-editor-header h3{margin:0;font-size:18px}.folder-name-field{color:var(--text-secondary);gap:6px;font-size:12px;font-weight:700;display:grid}.folder-name-field input{border:1px solid var(--border);background:var(--bg-secondary);width:100%;font:inherit;border-radius:10px;padding:10px 12px}.folder-editor-hint{color:var(--text-secondary);margin:14px 0 8px;font-size:12px;line-height:1.4}.folder-chat-options{border:1px solid var(--border);border-radius:12px;max-height:300px;overflow:auto}.folder-chat-option{border-bottom:1px solid var(--border);cursor:pointer;grid-template-columns:auto 28px minmax(0,1fr) auto;align-items:center;gap:8px;padding:9px 10px;font-size:13px;display:grid}.folder-chat-option:last-child{border-bottom:0}.folder-chat-option small{color:var(--text-muted);font-size:10px}.folder-option-avatar{color:#fff;background:var(--primary);text-transform:uppercase;border-radius:50%;place-items:center;width:26px;height:26px;font-weight:700;display:grid}.folder-editor-actions{grid-template-columns:auto 1fr auto auto;gap:8px;margin-top:16px;display:grid}.folder-delete{color:#fff;background:#dc2626;border-color:#dc2626}.conv-item{cursor:pointer;border-bottom:1px solid #f3f4f6;align-items:center;gap:12px;padding:12px 16px;transition:background .12s;display:flex}.conv-item:hover{background:#f9fafb}.conv-item.active{background:var(--primary-light)}.llm-section-title{color:var(--primary);letter-spacing:.08em;padding:12px 16px 5px;font-size:12px;font-weight:800}.llm-connection{border-bottom:1px solid var(--border)}.llm-connection-title{justify-content:space-between;align-items:center;gap:8px;padding:7px 12px 5px 16px;font-weight:700;display:flex}.llm-connection-toggle{color:inherit;font:inherit;text-align:left;cursor:pointer;background:0 0;border:0;align-items:center;gap:7px;min-width:0;display:flex}.llm-connection-title small{color:var(--text-muted);font-size:11px;font-weight:500}.llm-actions{gap:2px;display:flex}.llm-session-row{align-items:stretch;display:flex}.llm-session{border-bottom:0;flex:1;min-width:0}.llm-session-menu{width:34px;color:var(--text-muted);cursor:pointer;background:0 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var(--border);background:var(--bg-secondary);resize:none;border-radius:24px;outline:none;flex:1;min-height:42px;max-height:40vh;padding:10px 16px;font-size:14px;line-height:1.45;transition:border-color .2s;overflow-y:auto}.msg-input:focus{border-color:var(--primary);background:var(--bg)}.send-btn{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:42px;height:42px;transition:background .15s;display:flex}.send-btn:hover{background:var(--primary-dark)}.send-btn:disabled{cursor:default;background:#d1d5db}.attach{flex-shrink:0}.upload-preview{margin-right:4px;display:inline-block;position:relative}.upload-preview img{object-fit:cover;border:2px solid var(--primary);border-radius:8px;width:40px;height:40px}.cancel-x{background:var(--primary);color:#fff;cursor:pointer;border:2px solid 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img,.att-image,.att-video{max-width:100%}.input-bar{padding:10px 12px}.input-row{gap:6px}.msg-input{min-height:40px}.thread-drawer{border-left:none;border-top:1px solid var(--border);z-index:30;background:var(--bg);border-radius:18px 18px 0 0;width:100%;height:min(72dvh,640px);position:fixed;inset:auto 0 0;overflow:hidden;box-shadow:0 -12px 32px #00000029}.thread-drawer-header{touch-action:none;cursor:grab;flex-shrink:0;padding:0 12px}.thread-drawer-header:active{cursor:grabbing}.thread-drawer-body{background:#f8fafc;padding:12px}.thread-drawer-compose{padding:10px 12px calc(10px + env(safe-area-inset-bottom))}.thread-compose-row{padding-bottom:env(safe-area-inset-bottom)}.poll-composer{width:calc(100vw - 16px);max-height:88dvh}.poll-row{grid-template-columns:1fr}}.thread-sheet-enter-active,.thread-sheet-leave-active{transition:transform .22s,opacity 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0;border:none;font-size:36px;line-height:1;position:absolute;top:16px;right:20px}.lightbox-close:hover{color:#ddd}.lightbox-img{object-fit:contain;cursor:default;border-radius:4px;max-width:90vw;max-height:90vh}.lightbox-nav{color:#fff;cursor:pointer;z-index:1001;background:#ffffff24;border:none;border-radius:50%;width:44px;height:44px;font-size:28px;line-height:1;position:absolute;top:50%;transform:translateY(-50%)}.lightbox-nav:hover{background:#ffffff38}.lightbox-prev{left:18px}.lightbox-next{right:18px}.lightbox-counter{color:#fff;z-index:1001;background:#00000059;border-radius:999px;padding:6px 10px;font-size:12px;position:absolute;bottom:18px;left:50%;transform:translate(-50%)}.app-dialog-overlay{z-index:1300;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#0f172a7a;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.app-dialog{border:1px solid color-mix(in srgb, var(--border) 80%, 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2px;font-size:12px;line-height:1.45}.app-dialog-actions{justify-content:flex-end;gap:8px;margin-top:20px;display:flex}.app-dialog-error{color:#dc2626;margin:14px 0 0;font-size:13px;line-height:1.4}.dialog-tabs{gap:8px;margin-bottom:16px;display:flex}.dialog-tabs button{border:1px solid var(--border);color:var(--text-secondary);cursor:pointer;background:0 0;border-radius:999px;padding:7px 12px}.dialog-tabs button.active{color:#fff;border-color:var(--primary);background:var(--primary)}.btn-danger{color:#fff;background:#dc2626;border-color:#dc2626}.btn-danger:hover{background:#b91c1c;border-color:#b91c1c}@media (width<=600px){.app-dialog-overlay{align-items:end;padding:8px}.app-dialog{border-radius:20px 20px 14px 14px;width:100%;max-height:calc(100dvh - 16px)}}