:root{--z-base:1;--z-content:5;--z-elevated:10;--z-nav-mobile:20;--z-nav-desktop:21;--z-input-controls:25;--z-dropdown:30;--z-sidebar:40;--z-panel:45;--z-panel-overlay:48;--z-modal-backdrop:60;--z-modal:70;--z-toast:80;--z-header-fixed:90;--z-emergency:100}.mobile-bottom-nav{z-index:var(--z-nav-mobile)!important}.mobile-header{z-index:var(--z-header-fixed)!important}.bot-page-input-container{z-index:var(--z-input-controls)!important}.history-panel{z-index:var(--z-sidebar)!important}.right-sidebar{z-index:var(--z-panel)!important}.site-header-fixed{z-index:var(--z-header-fixed)!important}.modal-overlay{z-index:var(--z-modal-backdrop)!important}.modal-content{z-index:var(--z-modal)!important}.dropdown-menu{z-index:var(--z-dropdown)!important}.toast-container{z-index:var(--z-toast)!important}:root{--sidebar-bg-start:rgba(248,250,252,.95);--sidebar-bg-middle:rgba(219,234,254,.95);--sidebar-bg-end:rgba(199,210,254,.95);--sidebar-item-hover:rgba(34,197,94,.06);--sidebar-item-active:rgba(34,197,94,.1);--sidebar-item-focus:rgba(34,197,94,.12);--sidebar-text-primary:#1e293b;--sidebar-text-secondary:#64748b;--sidebar-text-muted:#94a3b8;--sidebar-text-active:#10b981;--brand-green-primary:#10b981;--brand-green-light:#34d399;--brand-green-dark:#059669;--sidebar-padding:1rem;--sidebar-item-padding:0.875rem 0.75rem;--sidebar-border-radius:0.75rem;--sidebar-transition:all 0.2s cubic-bezier(0.4,0,0.2,1);--sidebar-transition-slow:all 0.3s cubic-bezier(0.4,0,0.2,1)}.sidebar-v2{position:fixed;top:0;left:0;height:100vh;width:4rem;z-index:40;background:linear-gradient(135deg,var(--sidebar-bg-start) 0,var(--sidebar-bg-middle) 35%,var(--sidebar-bg-end) 100%);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);display:flex;flex-direction:column;transition:var(--sidebar-transition-slow)}.sidebar-v2.is-expanded,.sidebar-v2.is-mobile-open,.sidebar-v2:hover{width:13rem}.sidebar-v2__mobile-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:35;opacity:0;visibility:hidden;transition:var(--sidebar-transition)}.sidebar-v2__mobile-overlay.is-open{opacity:1;visibility:visible}.sidebar-v2__header{height:4rem;padding:var(--sidebar-padding);display:flex;align-items:center;position:relative;overflow:hidden}.sidebar-v2__logo-collapsed{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);display:flex;align-items:center;justify-content:center;opacity:1;transition:var(--sidebar-transition-slow)}.sidebar-v2.is-expanded .sidebar-v2__logo-collapsed,.sidebar-v2:hover .sidebar-v2__logo-collapsed,.sidebar-v2__logo-expanded{opacity:0;visibility:hidden}.sidebar-v2__logo-expanded{display:flex;align-items:center;gap:.5rem;width:calc(100% - 2rem);position:absolute;left:var(--sidebar-padding);top:50%;transform:translateY(-50%);transition:var(--sidebar-transition-slow)}.sidebar-v2.is-expanded .sidebar-v2__logo-expanded,.sidebar-v2:hover .sidebar-v2__logo-expanded{opacity:1;visibility:visible}.sidebar-v2__brand-text{font-size:1.125rem;font-weight:700;color:var(--sidebar-text-primary);white-space:nowrap}.sidebar-v2__close-btn{position:absolute;right:var(--sidebar-padding);background:transparent;border:none;padding:.25rem;border-radius:.375rem;color:var(--sidebar-text-secondary);cursor:pointer;transition:var(--sidebar-transition)}.sidebar-v2__close-btn:hover{background:var(--sidebar-item-hover);color:var(--sidebar-text-primary)}.sidebar-v2__nav{flex:1;padding:1rem var(--sidebar-padding) 0;display:flex;flex-direction:column;gap:.25rem}.sidebar-v2__nav-item{display:flex;align-items:center;justify-content:flex-start;padding:var(--sidebar-item-padding);border-radius:var(--sidebar-border-radius);color:var(--sidebar-text-secondary);text-decoration:none;cursor:pointer;transition:var(--sidebar-transition);position:relative;overflow:hidden;min-height:2.75rem;margin:.125rem 0}.sidebar-v2__nav-item:hover{background:var(--sidebar-item-hover);color:var(--sidebar-text-primary);transform:translateY(-1px)}.sidebar-v2__nav-item.is-active{background:var(--sidebar-item-active);font-weight:600}.sidebar-v2__nav-item.is-active,.sidebar-v2__nav-item.is-active .sidebar-v2__nav-icon{color:var(--sidebar-text-active)}.sidebar-v2:not(:hover):not(.is-expanded):not(.is-mobile-open) .sidebar-v2__nav-item{justify-content:center;padding:.875rem .5rem}.sidebar-v2:not(:hover):not(.is-expanded):not(.is-mobile-open) .sidebar-v2__nav-text{display:none}.sidebar-v2__nav-icon{width:1.25rem;height:1.25rem;flex-shrink:0;transition:var(--sidebar-transition);display:flex;align-items:center;justify-content:center}.sidebar-v2__nav-text{margin-left:.75rem;font-size:.875rem;font-weight:500;white-space:nowrap;opacity:0;visibility:hidden;transition:var(--sidebar-transition-slow)}.sidebar-v2.is-expanded .sidebar-v2__nav-text,.sidebar-v2:hover .sidebar-v2__nav-text{opacity:1;visibility:visible}.sidebar-v2__auth{padding:var(--sidebar-padding);border-top:1px solid rgba(148,163,184,.2);margin-top:auto}.sidebar-v2__auth-container{position:relative;width:100%}.sidebar-v2__auth-collapsed{display:flex;align-items:center;justify-content:center;width:100%;background:none;border:none;cursor:pointer;transition:var(--sidebar-transition);opacity:1;visibility:visible;padding:.25rem}.sidebar-v2__auth-collapsed:hover{transform:translateY(-1px) scale(1.05)}.sidebar-v2__auth-expanded{display:flex;align-items:center;justify-content:center;width:100%;padding:var(--sidebar-item-padding);background:linear-gradient(135deg,var(--brand-green-light),var(--brand-green-primary));color:#fff;border:none;border-radius:var(--sidebar-border-radius);cursor:pointer;transition:var(--sidebar-transition);font-weight:600;font-size:.875rem;box-shadow:0 2px 4px -1px rgba(16,185,129,.2);min-height:2.75rem;position:absolute;top:0;left:0;opacity:0;visibility:hidden;overflow:hidden}.sidebar-v2__auth-expanded:hover{background:linear-gradient(135deg,var(--brand-green-primary),var(--brand-green-dark));transform:translateY(-1px) scale(1.01);box-shadow:0 4px 8px -2px rgba(16,185,129,.3)}.sidebar-v2.is-expanded .sidebar-v2__auth-expanded,.sidebar-v2:hover .sidebar-v2__auth-expanded{opacity:1;visibility:visible}.sidebar-v2.is-expanded .sidebar-v2__auth-collapsed,.sidebar-v2:hover .sidebar-v2__auth-collapsed{opacity:0;visibility:hidden}.sidebar-v2__auth-text{margin-left:.5rem;white-space:nowrap}.sidebar-v2__mobile-btn{position:fixed;top:1rem;left:1rem;z-index:50;background:var(--brand-green-primary);color:#fff;border:none;padding:.75rem;border-radius:var(--sidebar-border-radius);cursor:pointer;transition:var(--sidebar-transition);box-shadow:0 4px 6px -1px rgba(0,0,0,.1);display:none}.sidebar-v2__mobile-btn:hover{background:var(--brand-green-dark);transform:scale(1.05)}@media (max-width:1023px){.sidebar-v2__mobile-btn{display:block}.sidebar-v2{transform:translateX(-100%)}.sidebar-v2.is-mobile-open{transform:translateX(0)}}@media (min-width:1024px){.sidebar-v2__close-btn{display:none}}@keyframes slideIn{0%{opacity:0;transform:translateX(-1rem)}to{opacity:1;transform:translateX(0)}}@keyframes shimmer{0%{transform:translateX(-100%)}to{transform:translateX(100%)}}.sidebar-v2__nav-item{animation:slideIn .3s ease-out}.sidebar-v2__nav-item:first-child{animation-delay:.1s}.sidebar-v2__nav-item:nth-child(2){animation-delay:.2s}.sidebar-v2__nav-item:nth-child(3){animation-delay:.3s}.sidebar-v2__nav-item:nth-child(4){animation-delay:.4s}.sidebar-v2__auth-btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,hsla(0,0%,100%,.2),transparent);animation:shimmer 2s infinite}.sidebar-v2__auth-btn:focus,.sidebar-v2__mobile-btn:focus,.sidebar-v2__nav-item:focus{outline:2px solid var(--brand-green-primary);outline-offset:2px}@media (prefers-reduced-motion:reduce){.sidebar-v2,.sidebar-v2__auth-btn,.sidebar-v2__auth-text,.sidebar-v2__logo-collapsed,.sidebar-v2__logo-expanded,.sidebar-v2__nav-item,.sidebar-v2__nav-text{transition:none;animation:none}}