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.9rem;background:#fff;border-bottom:1px solid #f1f5f9;position:sticky;top:0;z-index:10}.quiz-lesson-title{flex:1;font-size:.95rem;font-weight:600;color:#1e293b;text-align:center}.quiz-count{font-size:.82rem;font-weight:600;color:#6366f1;background:#6366f11a;padding:.25rem .6rem;border-radius:8px}.quiz-progress-wrap{padding:0 1.25rem 1rem;background:#fff}.quiz-progress-bar{height:6px;background:#e2e8f0;border-radius:999px;overflow:hidden}.quiz-progress-fill{height:100%;background:linear-gradient(90deg,#6366f1,#a855f7);border-radius:999px;transition:width .5s ease}.quiz-body{padding:1rem 1.25rem 1.5rem;display:flex;flex-direction:column;gap:1rem;position:relative;z-index:1}.question-card{background:#ffffffa6;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-radius:18px;padding:1.25rem;box-shadow:0 4px 16px #00000014;position:relative;overflow:hidden;border:1px solid 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1.5rem;border-radius:14px;font-size:1rem;font-weight:700;animation:slideUp .3s ease}.feedback-toast.correct{background:#22c55e1f;color:#15803d;border:1.5px solid rgba(34,197,94,.3)}.feedback-toast.wrong{background:#ef44441f;color:#b91c1c;border:1.5px solid rgba(239,68,68,.3)}@keyframes slideUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.result-screen{background:linear-gradient(160deg,#6366f1,#7c3aed,#a855f7);justify-content:center}.result-body{display:flex;flex-direction:column;align-items:center;justify-content:center;flex:1;padding:2rem 1.75rem;gap:.75rem;text-align:center}.result-emoji{font-size:4rem;filter:drop-shadow(0 8px 24px rgba(0,0,0,.3));animation:float 3s ease-in-out infinite}.result-msg{font-size:1.75rem;font-weight:800;color:#fff;letter-spacing:-.5px}.result-lesson{font-size:.9rem;color:#ffffffb3}.result-score-ring{position:relative;width:130px;height:130px;margin:1rem 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.back-btn{color:#fff!important}.lessons-screen-transparent,.quiz-screen-transparent,.result-screen-transparent{width:100%;max-width:100%;min-height:100vh;display:flex;flex-direction:column;background:transparent;overflow-y:auto;overflow-x:hidden;position:relative}@media (min-width: 480px){.lessons-screen-transparent,.quiz-screen-transparent,.result-screen-transparent{max-width:560px;min-height:85vh;max-height:95vh;border-radius:36px;background:#0f0f1a73;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);box-shadow:0 40px 80px #00000080,0 0 0 1.5px #ffffff14}}.lessons-header-glass{display:flex;align-items:center;gap:1rem;padding:1.4rem 1.25rem 1rem;background:#00000059;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid 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480px){.result-screen-transparent{background:#0f0f1a8c}}.desktop-quiz-container{width:100%;min-height:100vh;display:flex;flex-direction:column;margin:0 auto;position:relative;background:transparent}@media (min-width: 768px){.desktop-quiz-container-wrapper{display:flex!important;align-items:center;justify-content:center;padding:2rem}.desktop-quiz-container{max-width:560px;min-height:auto;height:85vh;max-height:850px;border-radius:32px;background:transparent;overflow-y:auto!important;overflow-x:hidden}}