:root{--rail-width:65px;--rail-expanded-width:240px;--rail-bg:#fff;--rail-border:#e2e8f0;--rail-text-primary:#0f172a;--rail-text-secondary:#64748b;--rail-hover-bg:#f1f5f9;--rail-active-bg:#eff6ff;--rail-active-text:#2563eb}.hlm-rail{flex-shrink:0;width:var(--rail-width);height:100vh;height:100dvh;display:flex;flex-direction:column;padding:10px 12px 12px;border-right:1px solid var(--rail-border);background:var(--rail-bg);transition:width .25s cubic-bezier(.4,0,.2,1);z-index:100;position:relative;box-sizing:border-box}.hlm-rail.expanded{width:var(--rail-expanded-width);padding:10px 14px 12px}.hlm-rail-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px;height:40px;flex-shrink:0}.hlm-rail:not(.expanded) .hlm-rail-header{gap:12px}.hlm-rail-logo{display:flex;align-items:center}.hlm-rail-home-icon{width:36px;height:36px;background:#2563eb;border-radius:10px;color:white;transition:all .2s ease}.hlm-rail-frame-icon,.hlm-rail-home-icon{display:flex;align-items:center;justify-content:center}.hlm-rail-frame-icon{opacity:.8;border:none;background:transparent;padding:4px;border-radius:8px;cursor:pointer;transition:background .2s ease,opacity .2s ease}.hlm-rail-frame-icon:focus-visible,.hlm-rail-frame-icon:hover{background:var(--rail-hover-bg);opacity:1}.hlm-rail-frame-icon svg{width:32px;height:auto}.hlm-rail-content{flex:1;justify-content:space-between}.hlm-rail-content,.hlm-rail-top-section{display:flex;flex-direction:column;overflow:hidden;width:100%}.hlm-rail-top-section{gap:32px;flex:1 1 0;min-height:0}.hlm-rail-actions{display:flex;flex-direction:column;gap:8px;width:100%;flex-shrink:0}.hlm-rail-action-btn{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:12px;background:transparent;border:none;cursor:pointer;color:#334155;font-size:14px;font-weight:500;transition:all .2s;width:100%;white-space:nowrap}.hlm-rail-action-btn:hover{background:var(--rail-hover-bg);color:var(--rail-text-primary)}.hlm-rail-action-btn.active{background:var(--rail-active-bg);color:var(--rail-active-text)}.hlm-rail:not(.expanded) .hlm-rail-action-btn{justify-content:center;padding:10px}.hlm-rail-history{display:flex;flex-direction:column;gap:12px;padding-top:8px;animation:fadeIn .3s ease;width:100%;flex:0 1 auto;min-height:0;max-height:calc(100vh - 280px);max-height:calc(100dvh - 280px);overflow:hidden}.hlm-rail-history-header{display:flex;align-items:center;justify-content:space-between;padding:0 12px;color:#94a3b8;font-size:12px;font-weight:500;flex-shrink:0}.hlm-rail-search-btn{display:flex;align-items:center;justify-content:center;padding:4px;border:none;background:transparent;border-radius:6px;cursor:pointer;color:#94a3b8;transition:all .2s ease}.hlm-rail-search-btn:hover{background:var(--rail-hover-bg);color:var(--rail-text-primary)}.hlm-rail-history-list{display:flex;flex-direction:column;gap:4px;overflow-y:auto;overflow-x:hidden;flex:1;min-height:0;max-height:100%;position:relative}.hlm-rail-history-list::-webkit-scrollbar{width:6px}.hlm-rail-history-list::-webkit-scrollbar-track{background:transparent}.hlm-rail-history-list::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:3px}.hlm-rail-history-list::-webkit-scrollbar-thumb:hover{background:#94a3b8}.hlm-rail-history-item{display:flex;align-items:center;gap:8px;padding:10px 12px;font-size:14px;color:var(--rail-text-primary);border-radius:8px;cursor:pointer;transition:background .2s;flex:0 0 auto}.hlm-rail-history-item-title{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.hlm-rail-history-item:hover{background:#f8fafc}.hlm-rail-history-item.active{background:var(--rail-active-bg);color:var(--rail-active-text);font-weight:500}.hlm-rail-history-item-menu-wrapper{position:relative;flex-shrink:0}.hlm-rail-history-item-menu-trigger{width:24px;height:24px;display:flex;align-items:center;justify-content:center;border:none;background:transparent;border-radius:4px;color:#94a3b8;cursor:pointer;transition:background .15s,color .15s,opacity .15s;opacity:0}.hlm-rail-history-item-menu-trigger.is-open,.hlm-rail-history-item:hover .hlm-rail-history-item-menu-trigger{opacity:1}.hlm-rail-history-item-menu-trigger:hover{background:#e2e8f0;color:#0f172a}.hlm-rail-history-loading{display:flex;align-items:center;justify-content:center;gap:6px;padding:12px;color:var(--rail-text-secondary);font-size:12px}.hlm-rail-history-loading .spinning{animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}.hlm-rail-bottom{margin-top:auto;padding-top:8px;padding-bottom:12px;width:100%;flex-shrink:0;display:flex;flex-direction:column;gap:4px}.hlm-rail-avatar-container{display:flex;align-items:center;gap:12px;padding:8px;border-radius:12px;cursor:pointer;transition:background .2s;white-space:nowrap}.hlm-rail-avatar-container:hover{background:#f8fafc}.hlm-rail:not(.expanded) .hlm-rail-avatar-container{justify-content:center;padding:4px}.hlm-rail-avatar{width:40px;height:40px;border-radius:50%;overflow:hidden;flex-shrink:0;border:1px solid #e2e8f0}.hlm-rail-avatar img{width:100%;height:100%;object-fit:cover}.hlm-rail-user-info{display:flex;flex-direction:column;overflow:hidden;line-height:1.3}.hlm-rail-user-name{font-size:14px;font-weight:600;color:var(--rail-text-primary)}.hlm-rail-user-role{font-size:12px;color:var(--rail-text-secondary)}.hlm-rail-icon{width:20px;height:20px;flex-shrink:0}.hlm-rail-icon-sm{width:16px;height:16px}