:root{--sidebar-width: 280px;--header-height: 64px;--transition-speed: .3s}body.has-unified-header{padding-top:var(--header-height)}body.has-unified-header main{min-height:calc(100vh - var(--header-height));padding-top:var(--spacing-xl)}.sidebar{position:fixed;top:var(--header-height);left:0;width:var(--sidebar-width);height:calc(100vh - var(--header-height));background:#fff;border-right:1px solid var(--gray-200);transform:translate(-100%);transition:transform var(--transition-speed) ease;z-index:99;display:flex;flex-direction:column;overflow-y:auto}.sidebar.active{transform:translate(0);box-shadow:4px 0 20px #0000001a}.sidebar-overlay{position:fixed;top:var(--header-height);left:0;right:0;bottom:0;background:#00000080;opacity:0;visibility:hidden;transition:all var(--transition-speed);z-index:98}.sidebar-overlay.active{opacity:1;visibility:visible}.sidebar-header{padding:var(--spacing-xl);border-bottom:1px solid var(--gray-200)}.user-profile{display:flex;align-items:center;gap:var(--spacing-md)}.sidebar-avatar{width:56px;height:56px;border-radius:50%;object-fit:cover;border:2px solid var(--gray-200)}.user-info h4{margin:0;font-size:1rem;font-weight:600;color:var(--gray-900)}.user-info p{margin:0;font-size:.75rem;color:var(--gray-500)}.sidebar-nav{flex:1;padding:var(--spacing-lg) 0}.nav-item{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-md) var(--spacing-xl);color:var(--gray-700);text-decoration:none;transition:all .2s;border-left:3px solid transparent}.nav-item:hover{background:var(--gray-50);color:var(--primary-600);border-left-color:var(--primary-600)}.nav-item.active{background:var(--primary-50);color:var(--primary-600);border-left-color:var(--primary-600);font-weight:600}.nav-item .icon{font-size:1.25rem;width:24px;text-align:center}.nav-item .text{font-size:.875rem}.sidebar-footer{padding:var(--spacing-lg);border-top:1px solid var(--gray-200)}.logout-btn{display:flex;align-items:center;gap:var(--spacing-md);width:100%;padding:var(--spacing-md) var(--spacing-lg);background:var(--danger-50);color:var(--danger-600);border:none;border-radius:var(--radius-lg);cursor:pointer;font-size:.875rem;font-weight:600;transition:all .2s}.logout-btn:hover{background:var(--danger-100);transform:translate(4px)}.guest-login-btn{display:inline-flex;align-items:center;justify-content:center;padding:.5rem 1rem;border-radius:var(--radius-lg);background:var(--primary-600);color:#fff;text-decoration:none;font-weight:600;font-size:.875rem;transition:all .2s}.guest-login-btn:hover{background:var(--primary-700)}.logout-btn .icon{font-size:1.25rem}@media (min-width: 1024px){.sidebar{transform:translate(-100%)}.sidebar.active{transform:translate(0)}.sidebar-overlay.active{opacity:1;visibility:visible}}@media (max-width: 1023px){.sidebar{transform:translate(-100%)}.sidebar.active{transform:translate(0)}}