*{box-sizing:border-box;margin:0;padding:0}body{color:#1e293b;background:#f0f7ff}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:#e8f1fc}::-webkit-scrollbar-thumb{background:#94b8db;border-radius:3px}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}@keyframes countUp{0%{opacity:0;transform:scale(.5)}to{opacity:1;transform:scale(1)}}.animate-in{opacity:0;animation:.5s ease-out forwards fadeInUp}.stagger-1{animation-delay:50ms}.stagger-2{animation-delay:.1s}.stagger-3{animation-delay:.15s}.stagger-4{animation-delay:.2s}.stagger-5{animation-delay:.25s}.stagger-6{animation-delay:.3s}.mobile-menu-btn{cursor:pointer;background:0 0;border:none;flex-direction:column;gap:5px;padding:4px;display:none}.mobile-menu-btn span{background:#475569;border-radius:2px;width:22px;height:2px;transition:all .3s;display:block}.mobile-menu-btn.open span:first-child{transform:rotate(45deg)translate(5px,5px)}.mobile-menu-btn.open span:nth-child(2){opacity:0}.mobile-menu-btn.open span:nth-child(3){transform:rotate(-45deg)translate(5px,-5px)}.nav-links{align-items:center;gap:4px;display:flex}@media (max-width:640px){.mobile-menu-btn{display:flex}.nav-links{-webkit-backdrop-filter:blur(24px);backdrop-filter:blur(24px);z-index:99;background:#fffffff7;border-bottom:1px solid #e0ecfa;flex-direction:column;gap:4px;padding:12px 16px;display:none;position:absolute;top:64px;left:0;right:0;box-shadow:0 8px 24px #0000000f}.nav-links.open{display:flex}.nav-links button,.nav-links a{width:100%;text-align:left!important;border-radius:10px!important;padding:12px 16px!important}.hero-section{padding:48px 16px 36px!important}.stats-row{gap:24px!important;margin-top:36px!important}.category-grid{grid-template-columns:1fr!important}.stats-grid{grid-template-columns:repeat(2,1fr)!important}.quiz-info-row{flex-direction:column!important;align-items:flex-start!important;gap:10px!important}.score-bar{min-width:unset!important;width:100%!important}.admin-tabs{flex-direction:column!important}.auth-card{padding:28px 20px!important}.quiz-container{padding:16px!important}.results-container{padding:20px 16px!important}.admin-charts{grid-template-columns:1fr!important}.admin-users-table>div{grid-template-columns:1fr 1fr!important}.admin-users-table .hide-mobile{display:none!important}}