:root{--primary-color: #6366f1;--primary-hover: #4f46e5;--secondary-color: #8b5cf6;--success-color: #10b981;--success-hover: #059669;--danger-color: #ef4444;--danger-hover: #dc2626;--bg-gradient-start: #0f172a;--bg-gradient-end: #1e1b4b;--panel-bg: rgba(30, 41, 59, .6);--panel-bg-inner: rgba(15, 23, 42, .4);--panel-border: rgba(255, 255, 255, .1);--panel-border-focus: rgba(99, 102, 241, .5);--input-bg: rgba(0, 0, 0, .2);--text-primary: #f8fafc;--text-secondary: #cbd5e1;--text-muted: #94a3b8;--shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-md: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04);--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Outfit,sans-serif;background:linear-gradient(135deg,var(--bg-gradient-start),var(--bg-gradient-end));background-attachment:fixed;color:var(--text-primary);min-height:100vh;overflow-y:overlay}::-webkit-scrollbar{width:10px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#fff3;border-radius:10px}::-webkit-scrollbar-thumb:hover{background:#ffffff4d}#app{width:100%;max-width:900px;margin:0 auto;padding:30px 20px;display:flex;flex-direction:column;gap:24px}.glass-panel{background:var(--panel-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--panel-border);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg)}.glass-panel-inner{background:var(--panel-bg-inner);border:1px solid var(--panel-border);border-radius:var(--radius-lg);padding:24px;transition:border-color .3s ease,transform .2s ease}.glass-panel-inner:hover{border-color:#fff3}.app-header{padding:20px 30px;position:sticky;top:20px;z-index:100}.header-content{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px}h1{font-size:2rem;font-weight:700;background:linear-gradient(to right,var(--primary-color),#c084fc);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;margin:0}.header-actions{display:flex;gap:12px}h2{font-size:1.5rem;font-weight:600;color:var(--text-primary)}h3{font-size:1.1rem;font-weight:500;color:var(--text-secondary)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:none;padding:10px 20px;font-size:1rem;font-family:inherit;font-weight:500;border-radius:50px;cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1);outline:none}.btn:active{transform:scale(.95)}.btn-primary{background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));color:#fff;box-shadow:0 4px 12px #6366f14d}.btn-primary:hover{background:linear-gradient(135deg,var(--primary-hover),var(--secondary-color));box-shadow:0 6px 16px #6366f166;transform:translateY(-1px)}.btn-secondary{background:#ffffff1a;color:#fff;border:1px solid rgba(255,255,255,.1)}.btn-secondary:hover{background:#ffffff26;border-color:#fff3}.lang-options{display:flex;flex-direction:column;gap:12px;align-items:stretch;margin-top:16px}.lang-options .btn{justify-content:center}.btn-icon,.btn-icon-small{padding:0;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s ease;border:none}.btn-icon{width:40px;height:40px}.btn-icon-small{width:32px;height:32px;flex-shrink:0}.btn-success{background:var(--success-color);color:#fff;box-shadow:0 4px 10px #10b9814d}.btn-success:hover{background:var(--success-hover);transform:translateY(-1px) scale(1.05)}.btn-danger{background:transparent;color:var(--text-muted)}.btn-danger:hover{background:#ef44441a;color:var(--danger-color);transform:scale(1.05)}.material-icons-round{font-size:20px}.quiz-container{padding:30px;display:flex;flex-direction:column;gap:30px}.form-group-row{display:flex;gap:20px;flex-wrap:wrap}.flex-1{flex:1;min-width:200px}.flex-2{flex:2;min-width:300px}.form-group{display:flex;flex-direction:column;gap:8px}label{font-size:.9rem;font-weight:500;color:var(--text-secondary);margin-left:4px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}.input-field{width:100%;background:var(--input-bg);border:1px solid var(--panel-border);border-radius:var(--radius-md);padding:12px 16px;color:var(--text-primary);font-family:inherit;font-size:1rem;transition:all .3s ease;outline:none}.input-field:focus{border-color:var(--panel-border-focus);background:#0000004d;box-shadow:0 0 0 3px #6366f11a}.input-field::placeholder{color:#ffffff4d}.section-header,.section-header-small{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;padding-bottom:10px;border-bottom:1px solid var(--panel-border)}.section-header-small{margin-bottom:15px;padding-bottom:8px;border-bottom-color:#ffffff0d;margin-top:20px}#questions-list{display:flex;flex-direction:column;gap:24px}.question-card{animation:slideIn .3s ease-out}.question-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.question-number{font-size:1.1rem;font-weight:600;color:var(--primary-color);background:#6366f126;padding:4px 12px;border-radius:20px}.answers-list{display:flex;flex-direction:column;gap:12px}.answer-item{display:flex;align-items:center;gap:12px;background:#ffffff08;padding:10px 16px;border-radius:var(--radius-md);border:1px solid transparent;transition:all .2s ease;animation:fadeIn .3s ease-out}.answer-inputs{flex-grow:1}.answer-item:hover{background:#ffffff0d;border-color:#ffffff14}.answer-item.is-correct{background:#10b9810d;border-color:#10b98133}.answer-item.is-correct .answer-text{color:var(--success-color);font-weight:500}.custom-radio{display:block;position:relative;padding-left:24px;cursor:pointer;font-size:22px;-webkit-user-select:none;user-select:none;height:24px}.custom-radio input{position:absolute;opacity:0;cursor:pointer}.radio-mark{position:absolute;top:0;left:0;height:24px;width:24px;background-color:var(--input-bg);border:2px solid rgba(255,255,255,.3);border-radius:50%;transition:all .2s ease}.custom-radio:hover input~.radio-mark{border-color:#ffffff80}.custom-radio input:checked~.radio-mark{border-color:var(--success-color)}.radio-mark:after{content:"";position:absolute;display:none}.custom-radio input:checked~.radio-mark:after{display:block}.custom-radio .radio-mark:after{top:5px;left:5px;width:10px;height:10px;border-radius:50%;background:var(--success-color);box-shadow:0 0 8px var(--success-color)}@keyframes slideIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0;transform:translate(-10px)}to{opacity:1;transform:translate(0)}}.tooltip{position:relative}.tooltip:after{content:attr(data-tooltip);position:absolute;bottom:100%;left:50%;transform:translate(-50%) translateY(-8px);background:#000;color:#fff;padding:4px 8px;border-radius:4px;font-size:12px;white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:1000}.tooltip:hover:after{opacity:1;transform:translate(-50%) translateY(-4px)}.modal-overlay{position:fixed;top:0;left:0;width:100vw;height:100vh;background:#0009;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);display:flex;justify-content:center;align-items:center;z-index:9999;opacity:1;visibility:visible;transition:opacity .3s ease,visibility .3s ease}.modal-overlay.hidden{opacity:0;visibility:hidden;pointer-events:none}.modal-card{width:90%;max-width:400px;padding:30px;border-radius:var(--radius-xl);text-align:center;transform:scale(1);transition:transform .3s cubic-bezier(.175,.885,.32,1.275)}.modal-overlay.hidden .modal-card{transform:scale(.9)}.modal-card h3{font-size:1.5rem;margin-bottom:12px;color:var(--text-primary)}.modal-card p{font-size:1rem;color:var(--text-secondary);margin-bottom:24px}.modal-actions{display:flex;justify-content:center;gap:16px}.modal-actions .btn{padding:10px 24px}