:root{--primary:#6366f1;--primary-hover:#4f46e5;--secondary:#10b981;--secondary-hover:#059669;--danger:#ef4444;--danger-hover:#dc2626;--bg-color:#0b0f19;--bg-gradient:radial-gradient(circle at 10% 20%, #1e1b4b 0%, #0b0f19 50%, #0f172a 100%);--card-bg:#11182799;--card-border:#ffffff14;--text-main:#f8fafc;--text-muted:#94a3b8}*{box-sizing:border-box;margin:0;padding:0;font-family:Inter,system-ui,-apple-system,sans-serif}body{background:var(--bg-gradient);color:var(--text-main);background-attachment:fixed;justify-content:center;align-items:center;min-height:100vh;display:flex}#root{width:100%;max-width:900px;padding:20px}.app-container{flex-direction:column;align-items:center;width:100%;display:flex}.navbar{border:1px solid var(--card-border);-webkit-backdrop-filter:blur(16px);background:#1e293b66;border-radius:20px;gap:15px;margin-bottom:30px;padding:8px;display:flex;box-shadow:0 4px 30px #0000004d}.nav-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:14px;padding:12px 24px;font-size:1.05rem;font-weight:600;transition:all .3s cubic-bezier(.4,0,.2,1)}.nav-btn:hover{color:var(--text-main);background:#ffffff0d}.nav-btn.active{background:linear-gradient(135deg, var(--primary), #8b5cf6);color:#fff;box-shadow:0 8px 20px #6366f14d}.glass-panel{background:var(--card-bg);-webkit-backdrop-filter:blur(20px);border:1px solid var(--card-border);border-radius:28px;padding:40px;animation:.5s ease-out fadeIn;box-shadow:0 25px 50px -12px #00000080,inset 0 1px #ffffff1a}.wide-panel{width:100%;max-width:900px}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.title{background:linear-gradient(90deg,#818cf8,#d8b4fe);color:#0000;text-align:center;letter-spacing:-1px;-webkit-background-clip:text;margin-bottom:15px;font-size:2.8rem;font-weight:800}.subtitle{text-align:center;color:var(--text-muted);margin-bottom:30px;font-size:1.15rem}.btn{background:linear-gradient(135deg, var(--primary), #8b5cf6);color:#fff;cursor:pointer;border:none;border-radius:14px;width:100%;padding:14px 28px;font-size:1.05rem;font-weight:600;transition:all .3s}.btn:hover{transform:translateY(-2px);box-shadow:0 10px 25px -5px #6366f166}.btn:active{transform:translateY(0)}.btn-secondary{border:1px solid var(--card-border);color:var(--text-main);background:0 0}.btn-secondary:hover{box-shadow:none;background:#ffffff0d}.category-list{grid-template-columns:1fr;gap:15px;max-height:55vh;padding-right:10px;display:grid;overflow-y:auto}.category-list::-webkit-scrollbar{width:6px}.category-list::-webkit-scrollbar-track{background:0 0}.category-list::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:10px}.category-btn{border:1px solid var(--card-border);color:var(--text-main);text-align:left;cursor:pointer;background:#ffffff05;border-radius:18px;justify-content:space-between;align-items:center;padding:22px;font-size:1.1rem;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex}.category-btn:hover{background:#ffffff0d;border-color:#ffffff4d;transform:translate(8px);box-shadow:0 10px 20px #0003}.btn-icon{border:1px solid var(--card-border);color:var(--text-muted);cursor:pointer;background:#ffffff0d;border-radius:10px;padding:8px 16px;font-weight:600;transition:all .2s}.btn-icon:hover{color:var(--text-main);background:#ffffff1a}.didattica-list{flex-direction:column;gap:40px;margin-top:20px;margin-bottom:40px;display:flex}.didattica-card{background:#0f172a99;border:1px solid #ffffff0d;border-radius:20px;overflow:hidden;box-shadow:0 15px 35px #0003}.didattica-header{background:#ffffff05;border-bottom:1px solid #ffffff0d;padding:20px 25px}.badge{color:#34d399;text-transform:uppercase;letter-spacing:.5px;background:#10b98126;border:1px solid #10b9814d;border-radius:20px;padding:6px 12px;font-size:.8rem;font-weight:700}.didattica-question{color:#f8fafc;margin:25px;font-size:1.35rem;font-weight:600;line-height:1.6}.didattica-answer{border-left:4px solid var(--secondary);color:var(--text-main);background:linear-gradient(90deg,#10b9811a 0%,#10b98105 100%);border-radius:0 12px 12px 0;margin:0 25px 25px;padding:20px;font-size:1.1rem}.didattica-answer strong{text-transform:uppercase;letter-spacing:1px;color:var(--secondary);margin-bottom:8px;font-size:.85rem;display:block}.didattica-explanation{border-left:4px solid var(--primary);color:#cbd5e1;background:linear-gradient(90deg,#6366f11a 0%,#6366f105 100%);border-radius:0 12px 12px 0;margin:0 25px 25px;padding:25px;font-size:1.05rem;line-height:1.7}.didattica-explanation h3{color:#a5b4fc;margin-bottom:12px;font-size:1.2rem;font-weight:700}.didattica-explanation strong{color:#e2e8f0}.pagination{border-top:1px solid var(--card-border);justify-content:space-between;align-items:center;padding-top:30px;display:flex}.page-info{color:var(--text-main);background:#ffffff0d;border-radius:20px;padding:10px 20px;font-size:1.1rem;font-weight:600}.quiz-header{color:var(--text-muted);justify-content:space-between;align-items:center;margin-bottom:25px;font-size:1rem;display:flex}.progress-bar{background:#ffffff0d;border-radius:4px;width:100%;height:8px;margin-bottom:40px;overflow:hidden;box-shadow:inset 0 1px 2px #0000004d}.progress-fill{background:linear-gradient(90deg, var(--primary), #d8b4fe);border-radius:4px;height:100%;transition:width .4s cubic-bezier(.4,0,.2,1)}.question-text{margin-bottom:40px;font-size:1.4rem;font-weight:600;line-height:1.6}.options-list{flex-direction:column;gap:15px;margin-bottom:40px;display:flex}.option-btn{border:1px solid var(--card-border);color:var(--text-main);text-align:left;cursor:pointer;background:#ffffff08;border-radius:16px;padding:20px 25px;font-size:1.1rem;line-height:1.5;transition:all .2s}.option-btn:hover:not(:disabled){background:#ffffff14;border-color:#fff3;transform:translateY(-2px)}.option-btn.selected{background:var(--primary);border-color:var(--primary-hover)}.option-btn.correct{border-color:var(--secondary);color:#34d399;background:#10b98133}.option-btn.wrong{border-color:var(--danger);color:#f87171;background:#ef444433}.result-container{text-align:center}.score-circle{border:10px solid var(--primary);background:#ffffff08;border-radius:50%;flex-direction:column;justify-content:center;align-items:center;width:200px;height:200px;margin:0 auto 40px;display:flex;box-shadow:0 0 40px #6366f133,inset 0 0 20px #6366f11a}.score-circle.pass{border-color:var(--secondary);box-shadow:0 0 40px #10b98133,inset 0 0 20px #10b9811a}.score-circle.fail{border-color:var(--danger);box-shadow:0 0 40px #ef444433,inset 0 0 20px #ef44441a}.score-value{font-size:4rem;font-weight:800;line-height:1}.score-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:1px;margin-top:5px;font-size:1.1rem}.result-status{letter-spacing:-.5px;margin-bottom:30px;font-size:2rem;font-weight:800}.status-pass{color:var(--secondary)}.status-fail{color:var(--danger)}.stats-grid{grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:40px;display:grid}.stat-box{border:1px solid var(--card-border);background:#ffffff05;border-radius:16px;padding:20px}.stat-value{margin-bottom:5px;font-size:2.2rem;font-weight:800}.stat-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;font-size:.9rem}.text-correct{color:var(--secondary)}.text-wrong{color:var(--danger)}.text-skipped{color:var(--text-muted)}.loader-container{flex-direction:column;justify-content:center;align-items:center;height:50vh;display:flex}.loader{border:4px solid #ffffff0d;border-bottom-color:var(--primary);box-sizing:border-box;border-radius:50%;width:60px;height:60px;margin-bottom:20px;animation:1s linear infinite rotation;display:inline-block}@keyframes rotation{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media (width<=768px){.navbar{flex-wrap:wrap;justify-content:center;padding:12px}.nav-btn{text-align:center;flex:auto;padding:10px 15px;font-size:.95rem}.glass-panel{padding:25px 15px}.title{font-size:1.8rem}.subtitle{font-size:1rem}.stats-grid{grid-template-columns:repeat(2,1fr);gap:12px}.stat-value{font-size:1.6rem}.stat-label{font-size:.75rem}.score-circle{width:150px;height:150px}.score-value{font-size:3rem}.quiz-header{flex-direction:column;gap:15px;align-items:stretch!important}.quiz-header>div{justify-content:space-between;width:100%;display:flex}.didattica-question{margin:15px;font-size:1.15rem}.didattica-answer,.didattica-explanation{margin:0 15px 15px;padding:15px}.pagination{flex-direction:column;gap:15px}.pagination button{width:100%!important}.history-table-container{background:0 0!important;padding:0!important}.history-table,.history-table thead,.history-table tbody,.history-table th,.history-table td,.history-table tr{box-sizing:border-box;width:100%;display:block}.history-table thead tr{position:absolute;top:-9999px;left:-9999px}.history-table tr.history-row{border:1px solid var(--card-border);background:#0003;border-radius:12px;margin-bottom:15px;padding:10px}.history-table td.history-cell{text-align:right;word-break:break-word;border:none;border-bottom:1px solid #ffffff0d;justify-content:flex-end;align-items:center;min-height:44px;display:flex;position:relative;padding:12px 12px 12px 40%!important}.history-table tr.history-row td:last-child{border-bottom:none}.history-table td.history-cell:before{white-space:pre-wrap;text-align:left;width:35%;color:var(--text-muted);padding-right:10px;font-size:.85rem;font-weight:600;position:absolute;top:50%;left:10px;transform:translateY(-50%)}.history-table td.history-cell:first-of-type:before{content:"Data"}.history-table td.history-cell:nth-of-type(2):before{content:"Mod."}.history-table td.history-cell:nth-of-type(3):before{content:"Materia"}.history-table td.history-cell:nth-of-type(4):before{content:"Punti"}.history-table td.history-cell:nth-of-type(5):before{content:"Esito"}.history-table tr.history-error-row{background:0 0;border:none;margin-top:-10px;margin-bottom:20px}.history-table tr.history-error-row td{text-align:left;display:block;padding:0!important}.history-table tr.history-error-row td:before{content:none!important}}@keyframes shake{0%,to{transform:translate(0)}20%,60%{transform:translate(-5px)}40%,80%{transform:translate(5px)}}@keyframes pop{0%{transform:scale(1)}50%{transform:scale(1.05)}to{transform:scale(1)}}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.animate-shake{animation:.4s cubic-bezier(.36,.07,.19,.97) both shake}.animate-pop{animation:.3s ease-in-out both pop}.animate-slide-up{animation:.6s ease-out forwards slideUp}