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var(--border-color);justify-content:space-between;margin-bottom:1.5rem;padding-bottom:1rem;font-size:.9rem;font-weight:600;display:flex}.quiz-score{color:var(--primary-color);opacity:1}.quiz-question{margin-bottom:2rem;font-size:1.35rem;line-height:1.5}.quiz-options{flex-direction:column;gap:1rem;display:flex}.quiz-option{background-color:var(--bg-color);border:2px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-color);text-align:left;justify-content:space-between;align-items:center;padding:1.25rem 1.5rem;font-size:1rem;font-weight:500;transition:all .2s;display:flex}.quiz-option:hover:not(:disabled){border-color:var(--primary-color);transform:translate(5px)}.quiz-option:disabled{cursor:default}.quiz-option.correct{border-color:var(--success-color);color:var(--success-color);background-color:#10b9811a}.quiz-option.incorrect{border-color:var(--danger-color);color:var(--danger-color);opacity:.7;background-color:#ef44441a}.quiz-results{background-color:var(--card-bg);border:1px solid var(--border-color);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);text-align:center;flex-direction:column;align-items:center;gap:1.5rem;padding:3rem 2rem;animation:.5s slideUp;display:flex}.quiz-results h3{margin:0;font-size:2rem}.final-score{color:var(--text-color);font-size:1.25rem;font-weight:600}.badge-earned{background-color:var(--bg-color);border-radius:var(--radius-md);border:1px dashed var(--border-color);width:100%;max-width:300px;padding:1.5rem}.badge-earned p{opacity:.8;margin-bottom:.5rem;font-size:.9rem}.badge-badge{color:var(--primary-color);font-size:1.5rem;font-weight:700}.reset-btn{background-color:var(--primary-color);color:#fff;border-radius:var(--radius-md);margin-top:1rem;padding:.75rem 2rem;font-size:1.1rem;font-weight:600;transition:background-color .2s}.reset-btn:hover{background-color:var(--primary-hover)}.flashcards-container{flex-direction:column;display:flex}.flashcard-deck{flex-direction:column;align-items:center;gap:2rem;width:100%;max-width:600px;margin:0 auto;display:flex}.flashcard{perspective:1000px;cursor:pointer;background-color:#0000;width:100%;height:350px}.flashcard-inner{text-align:center;width:100%;height:100%;transform-style:preserve-3d;box-shadow:var(--shadow-lg);border-radius:var(--radius-xl);transition:transform .6s cubic-bezier(.4,0,.2,1);position:relative}.flashcard.flipped .flashcard-inner{transform:rotateY(180deg)}.flashcard-front,.flashcard-back{backface-visibility:hidden;border-radius:var(--radius-xl);border:1px solid var(--border-color);flex-direction:column;justify-content:center;align-items:center;width:100%;height:100%;padding:2rem;display:flex;position:absolute}.flashcard-front{background:linear-gradient(145deg, var(--card-bg), var(--bg-color));color:var(--text-color)}.flashcard-back{background:linear-gradient(145deg, var(--primary-color), var(--primary-hover));color:#fff;transform:rotateY(180deg)}.card-category{text-transform:uppercase;letter-spacing:1px;opacity:.7;font-size:.85rem;font-weight:600;position:absolute;top:1.5rem;left:1.5rem}.flashcard-front h3{background:linear-gradient(135deg, var(--primary-color), var(--secondary-color));-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin:0;font-size:2rem}[data-theme=dark] .flashcard-front h3{background:linear-gradient(135deg,#818cf8,#38bdf8);-webkit-text-fill-color:transparent;-webkit-background-clip:text}.definition-text{font-size:1.25rem;font-weight:500;line-height:1.6}.flip-hint{opacity:.6;color:var(--text-color);align-items:center;gap:.5rem;font-size:.9rem;display:flex;position:absolute;bottom:1.5rem}.flashcard-controls{background-color:var(--card-bg);border-radius:var(--radius-lg);border:1px solid var(--border-color);width:100%;box-shadow:var(--shadow-sm);justify-content:space-between;align-items:center;padding:1rem;display:flex}.nav-btn{background-color:var(--bg-color);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-color);align-items:center;gap:.5rem;padding:.75rem 1.25rem;font-weight:600;transition:all .2s;display:flex}.nav-btn:hover{background-color:var(--primary-color);color:#fff;border-color:var(--primary-color)}.card-counter{color:var(--text-color);font-size:1.1rem;font-weight:600}