:root{--primary-bg: #0f172a;--secondary-bg: #1e293b;--accent-bg: #334155;--text-primary: #ffffff;--text-secondary: #cbd5e1;--text-muted: #94a3b8;--accent-color: #3b82f6;--success-color: #10b981;--warning-color: #f59e0b;--error-color: #ef4444;--border-color: #475569;--shadow-color: rgba(0, 0, 0, .5);--border-radius: .5rem;--transition: all .3s ease}*{box-sizing:border-box;margin:0;padding:0}body{overscroll-behavior:none;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;color:var(--text-primary);line-height:1.6;overflow-x:hidden;background:#020617}main{background-image:linear-gradient(to right,rgba(71,85,105,.3) 1px,transparent 1px),linear-gradient(to bottom,rgba(71,85,105,.3) 1px,transparent 1px),radial-gradient(circle at 50% 50%,rgba(139,92,246,.15) 0%,transparent 70%);background-size:32px 32px,32px 32px,100% 100%}button,input,select,textarea{transition:var(--transition)}button:focus,input:focus,select:focus,textarea:focus{outline:2px solid var(--accent-color);outline-offset:2px}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--secondary-bg)}::-webkit-scrollbar-thumb{background:var(--accent-bg);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--border-color)}.fade-in{animation:fadeIn .5s ease-in}.slide-up{animation:slideUp .3s ease-out}.scale-in{animation:scaleIn .2s ease-out}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}@keyframes scaleIn{0%{transform:scale(.95);opacity:0}to{transform:scale(1);opacity:1}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.7}}@keyframes shake{0%,to{transform:translate(0)}10%,30%,50%,70%,90%{transform:translate(-4px)}20%,40%,60%,80%{transform:translate(4px)}}.glass-effect{background:#1e293b66;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);border:1px solid var(--border-color);border-radius:var(--border-radius)}.card-shadow{box-shadow:0 10px 25px var(--shadow-color)}.button-hover:hover{transform:translateY(-2px);box-shadow:0 5px 15px #3b82f64d}.question-correct{animation:pulse .6s ease-in-out;background-color:var(--success-color)!important}.question-incorrect{animation:shake .5s ease-in-out;background-color:var(--error-color)!important}.spinner{width:20px;height:20px;border:2px solid var(--accent-bg);border-top:2px solid var(--accent-color);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media(max-width:640px){body{font-size:14px}}@media(min-width:641px)and (max-width:1024px){body{font-size:16px}}@media(min-width:1025px){body{font-size:18px}}@media print{body{background:#fff!important;color:#000!important}.no-print{display:none!important}}@media(prefers-contrast:high){:root{--primary-bg: #000000;--text-primary: #ffffff;--accent-color: #ffff00}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}.mt-0{margin-top:0!important}select{cursor:pointer}#footer a img{width:150px;height:51px}.mmap[disabled]{opacity:.2;cursor:not-allowed}