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option:disabled{background:var(--bg-secondary);color:var(--text-muted)}.hint{font-size:var(--font-sm);color:var(--text-secondary);margin-bottom:var(--space-4)}.text-primary{color:var(--text-primary)}.text-secondary{color:var(--text-secondary)}.text-muted{color:var(--text-muted)}.bg-primary{background:var(--bg-primary)}.bg-secondary{background:var(--bg-secondary)}@media (max-width: 768px){.sidebar{transform:translate(-100%)}.sidebar.open{transform:translate(0)}.sidebar-toggle{display:flex}.main-area{margin-left:0;height:100dvh;min-height:100vh}.header{padding:var(--space-4);flex-shrink:0}.header h1{font-size:var(--font-xl)}.chat-container{padding:var(--space-4);padding-bottom:200px;min-height:0;max-width:100%}.input-box{padding-bottom:calc(var(--space-8) + env(safe-area-inset-bottom))}.welcome-content{padding:var(--space-4)}.welcome-icon{margin-bottom:var(--space-4)}.welcome-svg{width:64px;height:64px}.welcome 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img{width:36px;height:36px;border-radius:50%;object-fit:cover}.user-name{font-size:var(--font-sm);font-weight:600;color:var(--text-primary);max-width:100px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.avatar-arrow{width:16px;height:16px;color:var(--text-muted);transition:transform var(--transition-fast)}.user-avatar:hover .avatar-arrow{color:var(--text-secondary)}.user-menu-dropdown{position:absolute;top:calc(100% + var(--space-2));right:0;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);min-width:280px;overflow:hidden;animation:menu-in .2s ease}@keyframes menu-in{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.user-info{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-4);background:var(--bg-secondary)}.user-info img{width:48px;height:48px;border-radius:50%;object-fit:cover}.user-details{flex:1;min-width:0}.user-name-large{font-size:var(--font-base);font-weight:600;color:var(--text-primary);margin-bottom:2px}.user-email{font-size:var(--font-sm);color:var(--text-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.menu-divider{height:1px;background:var(--border-color);margin:var(--space-1) 0}.menu-item{width:100%;padding:var(--space-3) var(--space-4);background:transparent;border:none;display:flex;align-items:center;gap:var(--space-3);font-size:var(--font-sm);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast)}.menu-item:hover{background:var(--error-500);color:#fff}.menu-icon{width:18px;height:18px}#icon-lock,#icon-eye-open,#icon-eye-close{display:none}@media (min-width: 769px) and (max-width: 1024px){.sidebar{width:240px}.main-area{margin-left:240px;height:100vh}.header{padding:var(--space-4) var(--space-6);flex-shrink:0}.chat-container{padding:var(--space-4);padding-bottom:200px;min-height:0;max-width:100%}.input-box{background:var(--bg-secondary);border:none}#app-container.sidebar-closed .chat-container,#app-container.sidebar-closed .input-box{padding-left:var(--space-4)!important}.sidebar-expand-btn.hidden{display:none}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}:focus-visible{outline:2px solid var(--primary-500);outline-offset:2px}@media print{body *{visibility:hidden}.sidebar,.header,.input-box,.modal-overlay,.sidebar-overlay{display:none!important}#print-container,#print-container *{visibility:visible}#print-container{position:absolute;left:0;top:0;width:100%;margin:0;padding:20px;background:#fff;color:#000}@page{size:A4;margin:20mm}#print-container h1{font-size:20px;color:#1a73e8;margin-bottom:15px;border-bottom:2px solid #1a73e8;padding-bottom:8px}#print-container h2{font-size:16px;color:#1a73e8;margin-top:20px;margin-bottom:12px;border-bottom:1px solid #e0e0e0;padding-bottom:6px}#print-container h3{font-size:14px;color:#1a73e8;margin-top:15px;margin-bottom:10px}#print-container strong{font-weight:600;color:#000}#print-container em{font-style:italic}#print-container code{background:#f5f5f5;padding:2px 6px;border-radius:3px;font-size:12px;font-family:Courier New,monospace}#print-container p{margin:8px 0;line-height:1.6}#print-container ul,#print-container ol{margin:8px 0;padding-left:24px}#print-container li{margin:4px 0;line-height:1.5}#print-container p,#print-container h1,#print-container h2,#print-container h3{orphans:3;widows:3}#print-container h2,#print-container h3{page-break-before:avoid}#print-container ul,#print-container ol{page-break-inside:avoid}}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--slate-300);border-radius:4px}.modal-overlay-full{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;z-index:3000;display:flex;align-items:center;justify-content:center}::-webkit-scrollbar-thumb:hover{background:var(--slate-400)}