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2px;--focus-ring-offset: 2px;--color-warning: #f59e0b;--color-info: #3b82f6;--color-success: #10b981;--color-muted: var(--text-tertiary)}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-sans);background-color:var(--chat-bg);color:var(--text-primary);line-height:1.5}a{color:var(--text-primary);text-decoration:underline}a:hover{text-decoration:none}button{cursor:pointer;font-family:inherit;border:none;background:none}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#d9d9d9;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#bfbfbf}:focus{outline:var(--focus-ring-width) solid var(--focus-ring-color);outline-offset:var(--focus-ring-offset)}@supports selector(:focus-visible){:focus:not(:focus-visible){outline:none}:focus-visible{outline:var(--focus-ring-width) solid var(--focus-ring-color);outline-offset:var(--focus-ring-offset)}}button:focus-visible,[role=button]:focus-visible,[role=option]:focus-visible,[role=menuitem]:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:var(--focus-ring-width) solid var(--focus-ring-color);outline-offset:var(--focus-ring-offset)}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.truncate{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.line-clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.line-clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.focus-trap-active{overflow:hidden}@keyframes spin{to{transform:rotate(360deg)}}.spinner{width:1.25rem;height:1.25rem;border:2px solid var(--border-light);border-top-color:var(--accent-primary);border-radius:50%;animation:spin .8s linear infinite}.spinner-sm{width:1rem;height:1rem}.spinner-lg{width:2rem;height:2rem;border-width:3px}.btn-loading{position:relative;color:transparent!important;pointer-events:none}.btn-loading:after{content:"";position:absolute;top:50%;left:50%;width:1rem;height:1rem;margin:-.5rem 0 0 -.5rem;border:2px solid currentColor;border-top-color:transparent;border-radius:50%;animation:spin .8s linear infinite}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.skeleton{background:linear-gradient(90deg,var(--sidebar-bg-hover) 0%,var(--sidebar-bg) 50%,var(--sidebar-bg-hover) 100%);background-size:200% 100%;animation:shimmer 1.5s ease-in-out infinite;border-radius:4px}@media(prefers-reduced-motion:reduce){.skeleton{animation:none;background:var(--sidebar-bg-hover)}}.empty-state-container{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--space-8) var(--space-4);text-align:center;color:var(--text-secondary)}.empty-state-icon{width:3rem;height:3rem;margin-bottom:var(--space-4);color:var(--text-tertiary)}.empty-state-title{font-size:1rem;font-weight:500;color:var(--text-primary);margin-bottom:var(--space-2)}.empty-state-description{font-size:.875rem;color:var(--text-secondary);max-width:24rem;margin-bottom:var(--space-4)}.empty-state-action{margin-top:var(--space-2)}.error-state-container{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--space-8) var(--space-4);text-align:center}.error-state-icon{width:3rem;height:3rem;margin-bottom:var(--space-4);color:var(--color-danger)}.error-state-title{font-size:1rem;font-weight:500;color:var(--text-primary);margin-bottom:var(--space-2)}.error-state-message{font-size:.875rem;color:var(--color-danger);max-width:24rem;margin-bottom:var(--space-4)}.error-state-action{margin-top:var(--space-2)}.error-inline{display:flex;align-items:center;gap:var(--space-2);padding:var(--space-3);background:#ef44441a;border:1px solid var(--color-danger);border-radius:6px;color:var(--color-danger);font-size:.875rem}.error-inline svg{width:1rem;height:1rem;flex-shrink:0}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-2) var(--space-4);font-size:.875rem;font-weight:500;border-radius:8px;border:1px solid transparent;cursor:pointer;transition:background var(--duration-fast),border-color var(--duration-fast),color var(--duration-fast)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn svg{width:1rem;height:1rem;flex-shrink:0}.btn-primary{background:var(--accent-primary);color:#fff;border-color:var(--accent-primary)}.btn-primary:hover:not(:disabled){background:var(--accent-hover);border-color:var(--accent-hover)}.btn-secondary{background:var(--input-bg);color:var(--text-primary);border-color:var(--border-light)}.btn-secondary:hover:not(:disabled){background:var(--sidebar-bg-hover);border-color:var(--border-medium)}.btn-danger{background:var(--color-danger);color:#fff;border-color:var(--color-danger)}.btn-danger:hover:not(:disabled){background:var(--color-danger-hover);border-color:var(--color-danger-hover)}.btn-ghost{background:transparent;color:var(--text-secondary);border-color:transparent}.btn-ghost:hover:not(:disabled){background:var(--input-bg);color:var(--text-primary)}.btn-sm{padding:var(--space-1) var(--space-3);font-size:.8125rem}.btn-lg{padding:var(--space-3) var(--space-6);font-size:1rem}.btn-icon{padding:var(--space-2);width:2rem;height:2rem}.btn-icon.btn-sm{width:1.75rem;height:1.75rem;padding:var(--space-1)}.btn-icon.btn-lg{width:2.5rem;height:2.5rem;padding:var(--space-3)}