:root{--bg-base:#06110d;--panel:#0a100dc7;--panel-solid:#101512;--panel-soft:#0c120fb8;--panel-hover:#0e1c14e0;--green:#00d555;--green-2:#0f8;--cyan:#00d5ff;--text:#fff;--muted:#ffffff9e;--line:#00d5552e;--line-soft:#ffffff14;--danger:#ff4d4f;--radius-lg:20px;--radius-md:14px;--shadow-main:0 22px 70px #0000006b, 0 0 34px #00d55514}*{box-sizing:border-box}html,body{min-height:100%;color:var(--text);background:radial-gradient(circle at 18% 18%, #00ff8838, transparent 32%), radial-gradient(circle at 82% 42%, #00d5ff24, transparent 36%), radial-gradient(circle at 52% 92%, #00ff881a, transparent 34%), var(--bg-base);margin:0;padding:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Arial,sans-serif;overflow-x:hidden}body{position:relative}body:before{content:"";pointer-events:none;z-index:0;background-color:#0000;background-image:linear-gradient(#00d5550e 1px,#0000 1px),linear-gradient(90deg,#00d5550e 1px,#0000 1px);background-position:0 0,0 0;background-repeat:repeat,repeat;background-size:42px 42px;background-attachment:scroll,scroll;background-origin:padding-box,padding-box;background-clip:border-box,border-box;position:fixed;inset:0}.aurora-bg,.particles{pointer-events:none;z-index:0;position:fixed;inset:0;overflow:hidden}.aurora{filter:blur(120px);opacity:.2;border-radius:999px;position:absolute}.aurora.a1{background:var(--green-2);width:420px;height:420px;animation:16s ease-in-out infinite auroraMove1;top:8%;left:16%}.aurora.a2{background:var(--cyan);width:380px;height:380px;animation:20s ease-in-out infinite auroraMove2;bottom:12%;right:12%}.aurora.a3{background:var(--green-2);width:260px;height:260px;animation:14s ease-in-out infinite auroraMove3;top:30%;right:35%}@keyframes auroraMove1{50%{transform:translate(-36px,34px)}}@keyframes auroraMove2{50%{transform:translate(34px,-36px)}}@keyframes auroraMove3{50%{transform:translate(-28px,-42px)}}.particle{background:var(--green-2);width:3px;height:3px;box-shadow:0 0 10px var(--green-2);opacity:0;border-radius:999px;animation:10s linear infinite particleRise;position:absolute;bottom:-20px}@keyframes particleRise{0%{opacity:0;transform:translateY(30px)}20%{opacity:.75}80%{opacity:.75}to{opacity:0;transform:translateY(-110vh)}}h1,h2,h3,#form-title{color:var(--text);text-align:center;font-weight:700}h2,h3,#form-title{margin-bottom:24px}#title-heading{z-index:1;text-align:center;letter-spacing:1px;text-shadow:0 0 10px #00d55552,0 0 28px #00d5552e;margin:34px 16px 0;font-weight:900;position:relative}.browser-update-card{color:#f7f7f7;background:linear-gradient(135deg,#ffb70021,#ff740014);border:1px solid #ffbe438c;border-radius:16px;margin:0 0 22px;padding:16px 18px;display:none;box-shadow:0 10px 28px #0000002e}.browser-update-card.is-visible{align-items:flex-start;gap:13px;display:flex}.browser-update-icon{background:#ffbe4329;border-radius:12px;flex:none;place-items:center;width:40px;height:40px;font-size:22px;display:grid}.browser-update-content{flex:1;min-width:0}.browser-update-title{color:#ffd166;margin:0 0 5px;font-size:15px;font-weight:800;line-height:1.35}.browser-update-message{color:#ffffffc7;margin:0;font-size:13px;line-height:1.55}.browser-update-message strong{color:#fff}@media (width<=560px){.browser-update-card{padding:14px}.browser-update-card.is-visible{gap:10px}}#app{z-index:1;position:relative}.login-container{z-index:1;-webkit-backdrop-filter:blur(16px);background:#111111d1;border:1px solid #00d55533;border-radius:16px;width:calc(100% - 32px);max-width:450px;margin:80px auto;padding:40px 30px;transition:border-color .28s,box-shadow .28s,transform .28s;position:relative;overflow:hidden;box-shadow:0 20px 60px #0000006b,0 0 30px #00d55514}.login-container:before,.login-container:after{content:none;display:none}.login-container:hover{border-color:#00d5557a;transform:translateY(-3px);box-shadow:0 22px 66px #0000007a,0 0 34px #00d55529}.login-container input{width:100%;color:var(--text);background:#1f1f1feb;border:1px solid #ffffff1a;border-radius:8px;outline:none;margin:10px 0 18px;padding:14px;font-size:15px;transition:border-color .2s,background .2s,box-shadow .2s}.login-container input:focus{background:#252525f5;border-color:#00d555a6;box-shadow:0 0 0 3px #00d5551f}.login-container button[type=submit],#submit-quiz-btn,#next-quiz-btn{color:#fff;cursor:pointer;background:#0ec055;border:none;border-radius:9px;width:100%;margin-top:10px;padding:14px;font-size:16px;font-weight:800;transition:background .2s,transform .15s,box-shadow .2s}.login-container button[type=submit]:hover,#submit-quiz-btn:hover,#next-quiz-btn:hover{background:#00d555;transform:translateY(-1px);box-shadow:0 0 24px #00d55547}.login-container button[type=submit]:active,#submit-quiz-btn:active,#next-quiz-btn:active{transform:scale(.98)}.tab-container{border-bottom:1px solid #ffffff14;justify-content:center;margin-bottom:30px;display:flex}.tab-btn{color:#888;text-align:center;cursor:pointer;background:0 0;border:none;outline:none;flex:1;padding:14px;font-size:15px;transition:color .2s,border-color .2s}.tab-btn.active{color:var(--green);border-bottom:2px solid var(--green);font-weight:800}.divider{text-align:center;color:#666;align-items:center;margin:20px 0;font-size:13px;display:flex}.divider:before,.divider:after{content:"";border-bottom:1px solid #ffffff1a;flex:1}.divider:not(:empty):before{margin-right:.25em}.divider:not(:empty):after{margin-left:.25em}.google-btn{color:#fff;cursor:pointer;background:#1e1e1eeb;border:1px solid #ffffff1a;border-radius:8px;justify-content:center;align-items:center;gap:10px;width:100%;padding:12px;font-size:15px;font-weight:600;transition:background .2s,border-color .2s;display:flex}.google-btn:hover{background:#252525fa;border-color:#00d55559}.google-icon{width:18px;height:18px}.navbar{z-index:2;-webkit-backdrop-filter:blur(16px);background:#06110dc2;border-bottom:1px solid #00d55529;justify-content:space-between;align-items:center;min-height:52px;padding:12px 30px;display:flex;position:relative;box-shadow:0 4px 20px #00000040}.navbar button{color:var(--danger);cursor:pointer;background:#222222e0;border:1px solid #ff4d4f47;border-radius:7px;padding:8px 16px;font-weight:800}.navbar button:hover{background:#2a1415f5}.app-layout{z-index:1;background:0 0;align-items:stretch;min-height:calc(100vh - 52px);display:flex;position:relative}.main-content{background:0 0;flex:1;padding:0 20px}.container{z-index:1;border-radius:var(--radius-lg);-webkit-backdrop-filter:blur(18px);max-width:700px;box-shadow:var(--shadow-main);background:#0a100dc2;border:1px solid #00d55529;margin:40px auto;padding:40px 30px;position:relative;overflow:hidden}.container>*{z-index:2;position:relative}.container:before,.container:after{content:none}.container.ai-border:before{content:"";border-radius:inherit;pointer-events:none;z-index:1;-webkit-mask-composite:xor;background:conic-gradient(#0000 0deg 70deg,#00ff88f2 110deg,#00d5ffd9 150deg,#0000 220deg 360deg);padding:2px;animation:7s linear infinite borderSpin;position:absolute;inset:0;-webkit-mask-image:linear-gradient(#000 0 0),linear-gradient(#000 0 0);mask-image:linear-gradient(#000 0 0),linear-gradient(#000 0 0);-webkit-mask-position:0 0,0 0;mask-position:0 0,0 0;-webkit-mask-size:auto,auto;mask-size:auto,auto;-webkit-mask-repeat:repeat,repeat;mask-repeat:repeat,repeat;-webkit-mask-clip:content-box,border-box;mask-clip:content-box,border-box;-webkit-mask-origin:content-box,border-box;mask-origin:content-box,border-box;-webkit-mask-composite:xor;mask-composite:exclude;-webkit-mask-source-type:auto,auto;mask-mode:match-source,match-source}@keyframes borderSpin{to{transform:rotate(360deg)}}.upload-section{background:#07120d85;border:1px solid #00d55529;border-radius:18px;margin:20px 0 24px;padding:18px;position:relative;overflow:hidden}.upload-section>*{z-index:2;position:relative}.custom-file-upload{color:#e8e8e8;text-align:center;cursor:pointer;background:#0d1411c2;border:1px solid #00d55547;border-radius:14px;justify-content:center;align-items:center;width:100%;min-height:92px;padding:14px 20px;line-height:1.6;transition:border-color .25s,background .25s,color .25s,transform .25s,box-shadow .25s;display:flex}.custom-file-upload:hover{color:#fff;background:#0d1c14db;border-color:#00ff88b8;transform:translateY(-2px);box-shadow:0 0 24px #00d5552e}input[type=file]{color:#fff;margin-top:14px}input[type=file]::file-selector-button{background:var(--green);color:#06110d;cursor:pointer;border:none;border-radius:10px;margin-right:10px;padding:10px 18px;font-weight:800}input[type=file]::file-selector-button:hover{background:#0ee864}hr{border:none;border-top:1px solid #ffffff24;margin:18px 0}.history-sidebar{z-index:1;-webkit-backdrop-filter:blur(18px);background:#061810b8;border-right:1px solid #00d5552e;border-top-right-radius:26px;border-bottom-right-radius:26px;width:300px;min-width:300px;padding:18px 10px;position:relative;overflow:hidden;box-shadow:10px 0 35px #00000047,inset -1px 0 #ffffff0a}.sidebar-brand{color:#fff;letter-spacing:.2px;text-shadow:0 0 10px #00d5554d,0 0 25px #00d55529;padding:0 6px 14px;font-size:16px;font-weight:800;line-height:1.25}.app-version{color:#ffffff8c;margin-top:4px;font-size:11px;font-weight:500}.sidebar-nav{flex-direction:column;gap:10px;margin-bottom:16px;display:flex}.sidebar-nav-btn{color:#f2f2f2;text-align:center;cursor:pointer;background:#0c0f0ed1;border:1px solid #ffffff14;border-radius:13px;width:100%;min-height:44px;padding:0 16px;font-size:14px;font-weight:800;transition:border-color .2s,background .2s,transform .2s,box-shadow .2s}.sidebar-nav-btn:hover{background:#0c1912e6;border-color:#00d5558c;transform:translateY(-1px)}.sidebar-nav-btn.active{border-color:var(--green);color:var(--green);background:#00d5551f}.sidebar-nav-btn.primary{background:var(--green);color:#06110d;border-color:var(--green);text-align:center;box-shadow:0 0 20px #00d5553d}.sidebar-nav-btn.primary:hover{color:#06110d;background:#0ce763;box-shadow:0 0 28px #00d55561}.history-stats{color:#ffffffc7;background:#0c0f0ed1;border:1px solid #ffffff14;border-radius:14px;margin-bottom:14px;padding:14px 16px;font-size:13px;line-height:1.6}.history-section-title{color:#fff;margin:20px 0 12px;padding:0 8px;font-size:16px;font-weight:800}.history-list{scrollbar-width:thin;scrollbar-color:transparent transparent;max-height:500px;margin-top:10px;padding-right:0;overflow-y:auto}.history-list:hover{scrollbar-color:var(--green) transparent}.history-list::-webkit-scrollbar{width:6px}.history-list::-webkit-scrollbar-track{background:0 0}.history-list::-webkit-scrollbar-thumb{background:0 0;border-radius:999px}.history-list:hover::-webkit-scrollbar-thumb{background:#00d555b3}.history-empty{color:#777;text-align:center;padding:20px 8px;font-size:14px}.history-item{cursor:pointer;background:#0a0d0cdb;border:1px solid #ffffff14;border-radius:15px;min-height:86px;margin-bottom:4px;padding:14px 58px 14px 14px;transition:border-color .2s,background .2s;position:relative}.history-item:hover{background:#0c1611eb;border-color:#00d5556b}.history-item-title{color:#fff;white-space:nowrap;text-overflow:ellipsis;margin-bottom:6px;padding-right:8px;font-size:14px;font-weight:800;overflow:hidden}.history-item-meta{color:#ffffff9e;font-size:12px;line-height:1.5}.history-score{color:var(--green);font-weight:900}.history-actions{z-index:2;flex-direction:column;gap:8px;display:flex;position:absolute;top:12px;right:10px}.history-actions .history-edit-btn,.history-actions .history-delete-btn{cursor:pointer;background:#202020e6;border:1px solid #ffffff1a;border-radius:9px;justify-content:center;align-items:center;width:30px;height:30px;padding:0;font-size:13px;line-height:1;display:flex}.history-actions .history-edit-btn{color:var(--green)}.history-actions .history-edit-btn:hover{border-color:var(--green);background:#00d5551f}.history-actions .history-delete-btn{color:#ff6b6b}.history-actions .history-delete-btn:hover{background:#2a1415;border-color:#ff4d4d}.question-block{background:#0c100ec7;border:1px solid #00d55524;border-radius:16px;margin-bottom:20px;padding:24px}.question-title{color:#fff;margin-bottom:16px;font-size:16px;font-weight:800}.option-item{color:#ccc;cursor:pointer;margin:12px 0;display:block}.option-item input{accent-color:var(--green);margin-right:12px}.option-item.selected{border:2px solid var(--green-2);border-radius:12px;padding:12px 16px;font-weight:900;box-shadow:0 0 18px #00d55573,inset 0 0 8px #fff3;background:var(--green)!important;color:#000!important}.blank-input{border:1px solid var(--green);color:#fff;background:#1e1e1e;border-radius:8px;outline:none;min-width:180px;margin:0 6px;padding:8px 12px;font-size:15px;font-weight:700;display:inline-block}.blank-input:focus{border-color:#0ec055;box-shadow:0 0 0 3px #00d55526}.support-btn{cursor:pointer;justify-content:center;align-items:center;text-decoration:none;display:inline-flex}.history-view-title,.stats-panel,.new-quiz-panel{color:#fff;background:#0c100ec7;border:1px solid #00d55524;border-radius:14px;margin-bottom:20px;padding:16px;line-height:1.6}.history-view-title strong,.stats-panel strong,.new-quiz-panel strong{color:var(--green)}.stats-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:12px;display:grid}.stats-card{background:#0a0d0cdb;border:1px solid #ffffff14;border-radius:12px;padding:14px}.stats-number{color:var(--green);margin-top:6px;font-size:24px;font-weight:900}.app-modal-overlay,#update-modal-overlay{z-index:9999;-webkit-backdrop-filter:blur(4px);background:#000000b8;justify-content:center;align-items:flex-start;padding:72px 24px 24px;display:flex;position:fixed;inset:0}#update-modal-overlay{z-index:99999}.app-modal-box,.update-modal-box{color:#fff;background:#111;border:1px solid #00d55552;border-radius:16px;width:min(420px,100vw - 48px);padding:22px;animation:.18s ease-out modalPop;box-shadow:0 20px 60px #000000a6}.update-modal-box{border-color:#00d55599;padding:24px}@keyframes modalPop{0%{opacity:0;transform:scale(.96)translateY(8px)}to{opacity:1;transform:scale(1)translateY(0)}}.app-modal-title,.update-modal-title{margin-bottom:10px;font-size:18px;font-weight:900}.app-modal-message,.update-modal-message{color:#d0d0d0;margin-bottom:18px;font-size:15px;line-height:1.6}.update-modal-message strong{color:var(--green)}.app-modal-input{color:#fff;background:#1b1b1b;border:1px solid #333;border-radius:10px;outline:none;width:100%;margin-bottom:18px;padding:12px 14px;font-size:15px}.app-modal-input:focus{border-color:var(--green);box-shadow:0 0 0 3px #00d5551f}.app-modal-actions,.update-modal-actions{justify-content:flex-end;gap:10px;display:flex}.app-modal-btn,.update-refresh-btn{cursor:pointer;border:none;border-radius:10px;padding:10px 16px;font-size:14px;font-weight:800;transition:background .2s,transform .2s}.app-modal-btn.secondary{color:#ddd;background:#242424;border:1px solid #333}.app-modal-btn.secondary:hover{background:#303030}.app-modal-btn.primary,.update-refresh-btn{background:var(--green);color:#000}.app-modal-btn.primary:hover,.update-refresh-btn:hover{background:#0ee864;transform:translateY(-1px)}.app-modal-btn.danger{color:#fff;background:#ff4d4d}.app-modal-btn.danger:hover{background:#ff2f2f;transform:translateY(-1px)}.app-modal-box.success{border-color:#00d55599}.app-modal-box.danger{border-color:#ff4d4db3}.app-modal-box.info{border-color:#0096ff99}html{scrollbar-width:thin;scrollbar-color:#00d555b3 transparent}::-webkit-scrollbar{width:5px;height:5px}::-webkit-scrollbar-track{background:#050505}::-webkit-scrollbar-thumb{background:#00d5558c;border:2px solid #050505;border-radius:999px}::-webkit-scrollbar-thumb:hover{background:#00d555e6}::-webkit-scrollbar-corner{background:#050505}@media (width<=768px){#title-heading{margin-top:28px;font-size:24px;line-height:1.25}.login-container{margin:56px auto;padding:32px 22px}.navbar{padding:12px 16px}.app-layout{flex-direction:column}.main-content{order:1;padding:0 12px}.main-content .container{border-radius:22px;margin:24px auto;padding:28px 18px}.history-sidebar{border-top:1px solid #00d5552e;border-right:none;border-radius:24px 24px 0 0;order:2;width:100%;min-width:100%;margin-top:18px;padding:18px 10px}.stats-grid{grid-template-columns:1fr}}.quota-box{color:#2b2b2b;background:#ffffffb8;border:1px solid #ffffffa6;border-radius:14px;margin:12px 0 16px;padding:12px 14px;font-size:14px;line-height:1.55;box-shadow:0 10px 28px #1f26871f}.quota-box strong{font-weight:700}.navbar{justify-content:space-between;align-items:center;gap:16px;display:flex}.navbar-left{align-items:center;gap:14px;min-width:0;display:flex}.navbar-quota{white-space:nowrap;border-radius:999px;align-items:center;gap:10px;margin:0;padding:6px 10px;font-size:13px;line-height:1;display:flex}.navbar-quota span{align-items:center;display:inline-flex}.navbar-quota span:not(:last-child):after{content:"•";opacity:.45;margin-left:10px}@media (width<=768px){.navbar{align-items:flex-start}.navbar-left{flex-direction:column;align-items:flex-start;gap:8px}.navbar-quota{white-space:normal;border-radius:12px;flex-wrap:wrap;line-height:1.4}}.pricing-btn{cursor:pointer;justify-content:center;align-items:center;text-decoration:none;display:inline-flex}@media (width<=768px){.navbar{flex-direction:column;align-items:stretch;gap:10px;padding:10px 12px;display:flex}.navbar-left{flex-direction:column;align-items:stretch;gap:8px;width:100%;min-width:0;display:flex}#user-email{text-overflow:ellipsis;white-space:nowrap;max-width:100%;font-size:13px;overflow:hidden}.navbar-quota{white-space:normal;border-radius:12px;flex-direction:column;align-items:stretch;gap:4px;width:100%;padding:8px 10px;font-size:12px;line-height:1.35;display:flex}.navbar-quota span{display:block}.navbar-quota span:not(:last-child):after{content:"";display:none}#logout-btn{width:100%;min-height:40px}}