#SideNav{position:fixed;left:0;top:0;height:100vh;width:280px;background:linear-gradient(135deg,#f5f7fa 0%,#e4e8eb 100%);box-shadow:5px 0 15px rgba(0,0,0,.1);z-index:1000;overflow-y:auto;transition:transform .2s ease;will-change:transform}#SideNav.collapsed{transform:translateX(-300px)}#SideNav .menu{width:100%;padding:20px 0}#SideNav .menu ul{list-style:none;padding:0;margin:0}#SideNav .menu li{position:relative;margin:5px 0}#SideNav .menu-header{text-align:center;padding:15px 0;margin-bottom:20px;border-bottom:1px solid #e0e0e0}#SideNav .menu-header a{font-size:18px;font-weight:bold;color:#2c3e50;text-transform:uppercase;letter-spacing:1px}#SideNav .menu-item a{display:flex;align-items:center;padding:12px 20px;color:#34495e;text-decoration:none;border-left:3px solid transparent;transition:all .3s ease}#SideNav .menu-item a:hover{background-color:rgba(52,152,219,.1);border-left-color:#3498db;color:#2980b9}#SideNav .menu-icon{margin-right:15px;font-size:18px;width:24px;text-align:center;display:flex;flex-direction:row}#SideNav .menu-title{flex-grow:1}#SideNav .menu-arrow{font-size:12px;transition:transform .3s ease}#SideNav .with-submenu.active .menu-arrow{transform:rotate(180deg)}#SideNav .submenu{display:none;background-color:rgba(255,255,255,.9);border-left:3px solid #3498db;margin-left:20px;box-shadow:0 2px 5px rgba(0,0,0,.05)}#SideNav .with-submenu.active>.submenu{display:block;animation:menuFade .12s ease}#SideNav .submenu-item a{padding:10px 15px 10px 40px;font-size:14px}#SideNav .submenu-arrow{font-size:10px;margin-left:5px;transition:transform .3s ease}#SideNav .with-submenu.active .submenu-arrow{transform:rotate(90deg)}#SideNav .submenu.second-level{position:absolute;left:100%;top:0;background-color:rgba(255,255,255,.95);border-left:3px solid #3498db;box-shadow:2px 2px 5px rgba(0,0,0,.1);min-width:200px;display:none}#SideNav .with-submenu.active .submenu.second-level{display:block}#SideNav .book-gallery{display:grid;grid-template-columns:1fr 1fr;gap:6px;padding:10px}#SideNav .book-icon{min-height:72px;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:4px;border:1px solid #d7dee5;border-radius:9px;background:#fff;color:#2c3e50;text-decoration:none;overflow:hidden;transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease;contain:layout paint}#SideNav .book-icon:hover,#SideNav .book-icon:focus-visible{transform:translateY(-2px);border-color:#3498db;box-shadow:0 4px 10px rgba(0,0,0,.14);color:#2c3e50;outline:none}#SideNav .book-icon svg{width:36px;height:36px;display:block;flex:0 0 36px}#SideNav .book-icon span{font-size:11px;line-height:1;font-weight:700}#SideNav .book-icon.ask{color:#c2185b;background:#fff6fa}#SideNav .book-icon.istanbul{color:#1565c0;background:#f3f9ff}#SideNav .book-icon.hayat{color:#455a64;background:#f7f8f9}#SideNav .book-icon.nefes{color:#2e7d32;background:#f4fff5}#SideNav .menu-badge{background:#e74c3c;color:#fff;font-size:10px;padding:2px 6px;border-radius:10px;margin-left:10px}#SideNav .highlight{background-color:rgba(241,196,15,.1);border-left:3px solid #f1c40f}#SideNav .highlight a{color:#f39c12}#SideNav .menu-footer{text-align:center;padding:20px;margin-top:20px;border-top:1px solid #e0e0e0;font-size:12px;color:#7f8c8d}#SideNav .social-icons{display:flex;justify-content:center;margin-top:10px}#SideNav .social-icon{margin:0 5px;font-size:16px;color:#7f8c8d;transition:color .3s ease}#SideNav .social-icon:hover{color:#3498db}#menuToggle{position:fixed;top:15px;left:15px;background:#1b45ff;color:#fff;border:none;border-radius:6px;padding:8px 12px;font-size:18px;cursor:pointer;z-index:1001}#menuToggle:hover{background:#0e1b2b}#SideNav .sidebar-shortcut-icons{display:flex;align-items:center;justify-content:center;gap:5px;width:100%;margin:0;padding:10px 8px;background:rgba(255,255,255,.30);border-top:1px solid rgba(255,255,255,.55);border-bottom:1px solid #d7dee5;box-sizing:border-box}#SideNav .sidebar-shortcut-icons>a{width:58px;height:58px;flex:0 0 58px;display:flex;align-items:center;justify-content:center;padding:3px;background:#fff;border:1px dashed #c4cbd2;border-radius:9px;overflow:hidden;text-decoration:none;box-sizing:border-box;transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease}#SideNav .sidebar-shortcut-icons>a:hover,#SideNav .sidebar-shortcut-icons>a:focus-visible{transform:translateY(-2px);border-color:#3498db;box-shadow:0 4px 10px rgba(0,0,0,.16);outline:none}#SideNav .sidebar-shortcut-icons img{display:block;width:100%;height:100%;object-fit:contain;border-radius:7px}@keyframes menuFade{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}@media (max-width:1900px){#SideNav,#menuToggle,#SideNav .faaliyet,#SideNav .iletisim{display:none!important;visibility:collapse!important}}@media (prefers-reduced-motion:reduce){#SideNav,#SideNav .menu-arrow,#SideNav .submenu-arrow,#SideNav .gallery-item{transition:none}#SideNav .with-submenu>.submenu{animation:none}}#SideNav .fast-inline-icons{gap:5px}#SideNav .fast-inline-icons>.fast-inline-icon{width:58px;height:64px;flex:0 0 58px;padding:4px 3px 3px;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:2px;overflow:hidden;background:#fff;border:1px solid #cfd8e3;border-radius:9px;box-sizing:border-box;text-decoration:none;transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease}#SideNav .fast-inline-icon svg{display:block;width:40px;height:40px;flex:0 0 40px}#SideNav .fast-inline-label{display:block;width:100%;overflow:hidden;color:#334155;font-size:9px;font-weight:700;line-height:11px;text-align:center;text-overflow:ellipsis;white-space:nowrap}#SideNav .fast-inline-icon:hover,#SideNav .fast-inline-icon:focus-visible{transform:translateY(-2px);border-color:currentColor;box-shadow:0 4px 10px rgba(0,0,0,.15);outline:none}#SideNav .piano-icon,#SideNav .aerolexic-icon,#SideNav .exams-icon,#SideNav .allpages-icon{color:#2563eb}#SideNav .calendar-icon,#SideNav .crm-icon,#SideNav .createexam-icon{color:#dc2626}#SideNav .solar-icon,#SideNav .editor-icon{color:#d97706}#SideNav .quote-icon,#SideNav .crmtr-icon{color:#7c3aed}#SideNav .aviation-icon,#SideNav .testbooks-icon,#SideNav .shortcuts-icon{color:#0f766e}#SideNav .prompt-icon,#SideNav .share-icon{color:#db2777}body.dark-mode #SideNav{background:linear-gradient(135deg,#171717 0%,#232323 100%);box-shadow:5px 0 15px rgba(0,0,0,.35);color:#eaeaea}body.dark-mode #SideNav .menu-header{border-bottom-color:#3a3a3a}body.dark-mode #SideNav .menu-header a,body.dark-mode #SideNav .menu-item a{color:#eaeaea}body.dark-mode #SideNav .menu-item a:hover{background-color:rgba(52,152,219,.18);border-left-color:#3498db;color:#d8ebff}body.dark-mode #SideNav .submenu{background-color:rgba(30,30,30,.96);border-left-color:#3498db;box-shadow:0 2px 5px rgba(0,0,0,.35)}body.dark-mode #SideNav .submenu.second-level{background-color:rgba(35,35,35,.98);border-left-color:#3498db;box-shadow:2px 2px 5px rgba(0,0,0,.35)}body.dark-mode #SideNav .book-icon{background:#242424;border-color:#3a3a3a}body.dark-mode #SideNav .book-icon:hover,body.dark-mode #SideNav .book-icon:focus-visible{border-color:#3498db;box-shadow:0 4px 10px rgba(0,0,0,.35)}body.dark-mode #SideNav .book-icon.ask{color:#ff6fa9;background:#2b1e24}body.dark-mode #SideNav .book-icon.istanbul{color:#6fb7ff;background:#1e2730}body.dark-mode #SideNav .book-icon.hayat{color:#c7d0d5;background:#25282a}body.dark-mode #SideNav .book-icon.nefes{color:#7bd982;background:#1f2a21}body.dark-mode #SideNav .highlight{background-color:rgba(241,196,15,.12);border-left-color:#f1c40f}body.dark-mode #SideNav .highlight a{color:#f7c948}body.dark-mode #SideNav .menu-footer{border-top-color:#3a3a3a;color:#b8b8b8}body.dark-mode #SideNav .social-icon{color:#b8b8b8}body.dark-mode #SideNav .social-icon:hover{color:#6fb7ff}body.dark-mode #SideNav .sidebar-shortcut-icons{background:rgba(255,255,255,.04);border-top-color:rgba(255,255,255,.10);border-bottom-color:#3a3a3a}body.dark-mode #SideNav .sidebar-shortcut-icons>a,body.dark-mode #SideNav .fast-inline-icons>.fast-inline-icon{background:#242424;border-color:#454545}body.dark-mode #SideNav .sidebar-shortcut-icons>a:hover,body.dark-mode #SideNav .sidebar-shortcut-icons>a:focus-visible,body.dark-mode #SideNav .fast-inline-icon:hover,body.dark-mode #SideNav .fast-inline-icon:focus-visible{box-shadow:0 4px 10px rgba(0,0,0,.35)}body.dark-mode #SideNav .fast-inline-label{color:#e2e8f0}