@media (min-width:769px){.mobile-only{display:none!important}.desktop-only{display:flex!important}}@media (max-width:768px){.desktop-only{display:none!important}.mobile-only{display:block!important}}.mobile-nav-container{padding:2px 12px;background:var(--bg);position:relative;width:100%;z-index:1000;box-shadow:0 2px 10px rgba(0,0,0,.05)}.mobile-brand{text-align:center;font-family:Poppins,sans-serif;font-weight:800;font-size:20px;color:var(--primary);margin-bottom:4px;display:flex;align-items:center;justify-content:center;gap:8px;text-decoration:none}.mobile-brand img{height:28px;width:28px;border-radius:50%;object-fit:cover;background:var(--glass)}.mobile-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:4px;padding-bottom:4px;position:relative}.nav-btn{display:flex;flex-direction:column;align-items:center;justify-content:center;height:60px;background:var(--bg);border-radius:16px;text-decoration:none;color:var(--text);font-size:10px;font-weight:700;box-shadow:0 4px 12px rgba(0,0,0,.05);transition:all .2s cubic-bezier(.25,.8,.25,1);border:1px solid rgba(0,0,0,.04);position:relative;overflow:hidden;cursor:pointer;letter-spacing:.3px}.nav-btn:hover{transform:translateY(-3px);box-shadow:0 8px 20px rgba(0,0,0,.08);border-color:rgba(0,0,0,.08)}.nav-btn:active{transform:scale(.96)}.nav-btn.active-dropdown{border-color:var(--accent);background:rgba(30,144,255,.05);transform:scale(.98)}.nav-btn i{font-size:18px;margin-bottom:5px;color:var(--primary)}.mobile-grid-dropdown{position:relative;z-index:9999;grid-column:1/-1;background:var(--input-bg);border-radius:12px;padding:10px;margin-top:5px;margin-bottom:5px;border:1px solid var(--border-color);display:grid;grid-template-columns:repeat(2,1fr);gap:8px;animation:slideDown .2s ease-out}.dropdown-item{display:flex;align-items:center;gap:8px;background:var(--bg);padding:8px 10px;border-radius:8px;font-size:11px;font-weight:600;color:var(--text);text-decoration:none;border:1px solid transparent;transition:all .15s}.dropdown-item:hover{border-color:var(--accent);color:var(--accent)}.dropdown-item i{font-size:14px;color:var(--primary);width:16px;text-align:center}@keyframes slideDown{0%{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:translateY(0)}}.dropdown-section{grid-column:1/-1}.theme-btn-inline{background:transparent!important;border:1px dashed var(--accent)}.theme-btn-inline,.theme-btn-inline i{color:var(--accent)}.floating-theme-toggle{position:absolute;top:5px;right:15px;width:32px;height:32px;border-radius:50%;background:rgba(255,255,255,.8);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);border:1px solid var(--border-color);box-shadow:0 2px 8px rgba(0,0,0,.1);display:flex;align-items:center;justify-content:center;font-size:14px;color:#333;z-index:2000;cursor:pointer;transition:all .3s ease}.nav-btn i.fa-home{color:#FF4136}.nav-btn i.fa-book{color:#2EC0CC}.nav-btn i.fa-search{color:#FF851B}.nav-btn i.fa-university{color:#B10DC9}.nav-btn i.fa-layer-group{color:#0074D9}.nav-btn i.fa-th-large{color:#39CCCC}.nav-btn i.fa-sign-in-alt{color:#3D9970}.mobile-floating-nav{position:fixed;bottom:0;top:auto;left:0;width:100%;background:var(--nav-bg);box-shadow:0 -2px 10px rgba(0,0,0,.05);z-index:9000;display:flex;justify-content:space-around;align-items:center;padding:8px 0;animation:slideUpNav .3s ease-out;border-top:1px solid var(--border-color)}@keyframes slideUpNav{0%{transform:translateY(100%)}to{transform:translateY(0)}}.mobile-floating-nav .nav-item{display:flex;flex-direction:column;align-items:center;justify-content:center;text-decoration:none;color:var(--muted);font-size:10px;font-weight:600;gap:4px;padding:4px 8px;border-radius:8px;transition:all .2s;min-width:55px}.mobile-floating-nav .nav-item i{font-size:18px;color:var(--muted);margin-bottom:0}.mobile-floating-nav .nav-item.active,.mobile-floating-nav .nav-item:hover{color:var(--primary);background:rgba(0,31,63,.03)}.mobile-floating-nav .nav-item.active i,.mobile-floating-nav .nav-item:hover i{color:var(--primary)}.nav-btn span{text-transform:uppercase;font-size:9px;margin-top:4px;text-align:center;width:100%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.scroll-to-top-btn{position:fixed;bottom:25px;right:25px;width:50px;height:50px;background:#FF4136;color:white;border:2px solid white;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:20px;box-shadow:0 4px 15px rgba(255,65,54,.4);cursor:pointer;z-index:1000;transition:transform .2s,background .2s}.scroll-to-top-btn:hover{transform:translateY(-3px);background:#E70000;box-shadow:0 6px 20px rgba(231,0,0,.5)}.scroll-to-top-btn:active{transform:scale(.95)}