:root{--header-height:64px;--sidebar-width:240px;--bg-color:#f8fafc;--sidebar-bg:#fff;--header-bg:#fff;--text-main:#1e293b;--text-muted:#64748b;--primary-color:#3b82f6;--border-color:#e2e8f0;--active-bg:#f1f5f9;--card-bg:#fff}.dark{--bg-color:#0f172a;--sidebar-bg:#1e293b;--header-bg:#1e293b;--text-main:#f1f5f9;--text-muted:#94a3b8;--primary-color:#60a5fa;--border-color:#334155;--active-bg:#334155;--card-bg:#1e293b}.layout-container{background-color:var(--bg-color);min-height:100vh}.main-header{height:var(--header-height);background-color:var(--header-bg);border-bottom:1px solid var(--border-color);z-index:100;justify-content:space-between;align-items:center;padding:0 24px;display:flex;position:fixed;top:0;left:0;right:0}.header-left{align-items:center;gap:16px;display:flex}.menu-toggle{color:var(--text-main);cursor:pointer;background:0 0;border:none;border-radius:4px;padding:4px;transition:background .2s;display:flex}.menu-toggle:hover{background-color:var(--active-bg)}.logo-container{color:var(--text-main);align-items:center;gap:8px;width:94px;font-size:20px;font-weight:700;text-decoration:none;display:flex}.header-center{flex:1;max-width:400px;margin:0 32px}.search-wrapper{align-items:center;display:flex;position:relative}.search-icon-wrapper{color:var(--text-muted);position:absolute;left:12px}.search-input{background-color:#f1f5f9;border:1px solid #0000;border-radius:8px;outline:none;width:100%;padding:8px 12px 8px 36px;font-size:14px;transition:all .2s}.search-input:focus{border-color:var(--primary-color);background-color:#fff;box-shadow:0 0 0 2px #3b82f61a}.search-shortcut{color:var(--text-muted);border:1px solid var(--border-color);background:#fff;border-radius:4px;padding:2px 4px;font-size:11px;position:absolute;right:12px}.header-right{align-items:center;gap:12px;display:flex}.header-btn{color:var(--text-main);cursor:pointer;background:0 0;border:none;border-radius:8px;align-items:center;gap:8px;padding:8px;font-size:14px;font-weight:500;transition:background .2s;display:flex}.header-btn:hover{background-color:var(--active-bg)}.notification-btn{position:relative}.notification-dot{background-color:#ef4444;border:2px solid #fff;border-radius:50%;width:8px;height:8px;position:absolute;top:8px;right:8px}.user-profile{cursor:pointer;border-radius:8px;align-items:center;gap:10px;padding:4px 8px;display:flex}.user-profile:hover{background-color:var(--active-bg)}.user-avatar{background-color:var(--primary-color);color:#fff;border-radius:8px;justify-content:center;align-items:center;width:32px;height:32px;font-size:12px;font-weight:600;display:flex}.header-dropdown-container{position:relative}.dropdown-menu{background:var(--card-bg);border:1px solid var(--border-color);z-index:1000;border-radius:12px;flex-direction:column;min-width:200px;margin-top:8px;padding:8px;display:flex;position:absolute;top:100%;right:0;box-shadow:0 10px 15px -3px #0000001a}.dropdown-item{color:var(--text-main);cursor:pointer;text-align:left;background:0 0;border:none;border-radius:8px;align-items:center;gap:12px;width:100%;padding:10px 12px;font-size:14px;transition:all .2s;display:flex}.dropdown-item:hover{background-color:var(--active-bg)}.dropdown-divider{background-color:var(--border-color);height:1px;margin:4px 8px}.search-suggestions{background:var(--card-bg);border:1px solid var(--border-color);z-index:999;border-radius:12px;max-height:400px;margin-top:8px;position:absolute;top:100%;left:0;right:0;overflow-y:auto;box-shadow:0 10px 15px -3px #0000001a}.suggestion-group{padding:8px}.suggestion-title{color:var(--text-muted);text-transform:uppercase;padding:4px 12px;font-size:11px;font-weight:600}.suggestion-item{color:var(--text-main);cursor:pointer;border-radius:8px;align-items:center;gap:12px;padding:8px 12px;display:flex}.suggestion-item:hover{background-color:var(--active-bg)}.suggestion-icon{background:var(--active-bg);width:28px;height:28px;color:var(--primary-color);border-radius:6px;justify-content:center;align-items:center;display:flex}.side-nav{width:var(--sidebar-width);background-color:var(--sidebar-bg);border-right:1px solid var(--border-color);top:var(--header-height);z-index:90;flex-direction:column;padding:24px 16px;display:flex;position:fixed;bottom:0;left:0;overflow-y:auto}.nav-section{margin-bottom:24px}.nav-section-title{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:12px;padding-left:12px;font-size:11px;font-weight:600}.nav-list{margin:0;padding:0;list-style:none}.nav-item{cursor:pointer;margin-bottom:4px}.nav-link{color:var(--text-main);border-radius:8px;justify-content:space-between;align-items:center;padding:10px 12px;font-size:14px;font-weight:500;text-decoration:none;transition:all .2s;display:flex}.nav-link-content{align-items:center;gap:12px;display:flex}.nav-link:hover{background-color:var(--active-bg)}.nav-link.active{background-color:var(--active-bg);color:var(--primary-color)}.logout-container{border-top:1px solid var(--border-color);margin-top:auto;padding-top:24px}.main-content{margin-left:var(--sidebar-width);margin-top:var(--header-height);min-height:calc(100vh - var(--header-height));padding:32px}@media (max-width:1024px){.side-nav{transition:transform .3s;transform:translate(-100%)}.main-content{margin-left:0}}