.flashcard{perspective:1000px;cursor:pointer;height:250px;margin:1rem 0}.flashcard-inner{width:100%;height:100%;transform-style:preserve-3d;transition:transform .6s;position:relative}.flashcard.flipped .flashcard-inner{transform:rotateY(180deg)}.flashcard-front,.flashcard-back{backface-visibility:hidden;text-align:center;border-radius:12px;justify-content:center;align-items:center;padding:1.5rem;line-height:1.6;display:flex;position:absolute;inset:0}.flashcard-front{background:rgba(var(--emerald-rgb),.1);border:1px solid rgba(var(--emerald-rgb),.2);font-size:1.1rem}.flashcard-back{background:rgba(var(--gold-rgb,212,175,55),.1);border:1px solid rgba(var(--gold-rgb,212,175,55),.2);color:var(--text-muted);font-size:.95rem;transform:rotateY(180deg)}.flashcard-nav{justify-content:center;align-items:center;gap:1rem;margin-top:1rem;display:flex}.flashcard-nav button{color:var(--cream);cursor:pointer;background:#ffffff0d;border:1px solid #ffffff1a;border-radius:8px;padding:.5rem 1rem}[data-theme=light] .flashcard-front{border-color:rgba(var(--emerald-rgb),.3);color:var(--text-body)}[data-theme=light] .flashcard-back{color:var(--text-body)}[data-theme=light] .flashcard-nav button{color:var(--text-body);background:#00000008;border-color:#0000001a}.quiz-single{max-width:600px;margin:0 auto}.quiz-header{justify-content:space-between;align-items:center;margin-bottom:.5rem;display:flex}.quiz-header h2{margin:0}.quiz-progress{color:var(--text-muted);font-variant-numeric:tabular-nums;font-size:.85rem}.quiz-progress-bar{background:#ffffff14;border-radius:2px;height:3px;margin-bottom:1.5rem;overflow:hidden}.quiz-progress-fill{background:var(--gold);border-radius:2px;height:100%;transition:width .3s}.quiz-question-text{margin-bottom:1.25rem;font-size:1.05rem;font-weight:500;line-height:1.6}.quiz-options{flex-direction:column;gap:.5rem;display:flex}.quiz-option{cursor:pointer;text-align:left;background:#ffffff08;border:1px solid #ffffff1a;border-radius:8px;align-items:flex-start;gap:.75rem;padding:.75rem 1rem;line-height:1.5;transition:border-color .2s,background .2s,opacity .2s;display:flex}.quiz-option:not(:disabled):hover{border-color:var(--gold)}.quiz-option:disabled{cursor:default}.quiz-option.dimmed{opacity:.4}.quiz-option-letter{border:1px solid #fff3;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:24px;height:24px;margin-top:1px;font-size:.75rem;font-weight:600;display:flex}.quiz-option.correct{border-color:var(--emerald-deep);background:rgba(var(--emerald-rgb),.1)}.quiz-option.correct .quiz-option-letter{background:var(--emerald-deep);border-color:var(--emerald-deep);color:#fff}.quiz-option.incorrect{background:#e76f511a;border-color:#e76f51}.quiz-option.incorrect .quiz-option-letter{color:#fff;background:#e76f51;border-color:#e76f51}.quiz-explanation{background:rgba(var(--emerald-rgb),.06);border-left:3px solid var(--emerald-deep);color:var(--text-muted);border-radius:0 8px 8px 0;margin-top:1rem;padding:.75rem 1rem;font-size:.9rem;line-height:1.6}.quiz-explanation strong{color:var(--cream)}.quiz-nav{justify-content:center;align-items:center;gap:1rem;margin-top:1.5rem;display:flex}.quiz-nav button{color:var(--cream);cursor:pointer;background:#ffffff0d;border:1px solid #ffffff1a;border-radius:8px;padding:.5rem 1.25rem;transition:border-color .2s}.quiz-nav button:hover:not(:disabled){border-color:var(--gold)}.quiz-nav button:disabled{opacity:.3;cursor:default}.quiz-score{color:var(--gold);font-size:.85rem;font-weight:600}[data-theme=light] .quiz-option{background:#00000005;border-color:#0000001a}[data-theme=light] .quiz-option-letter{border-color:#00000026}[data-theme=light] .quiz-explanation{background:rgba(var(--emerald-rgb),.05);color:var(--text-body)}[data-theme=light] .quiz-explanation strong{color:var(--text-body)}[data-theme=light] .quiz-progress-bar{background:#0000000f}[data-theme=light] .quiz-nav button{color:var(--text-body);background:#00000008;border-color:#0000001a}.slideshow{text-align:center}.slideshow img{border-radius:8px;max-width:100%;max-height:70vh}.slideshow-nav{justify-content:center;align-items:center;gap:1rem;margin-top:1rem;display:flex}.slideshow-nav button{color:var(--cream);cursor:pointer;background:#ffffff0d;border:1px solid #ffffff1a;border-radius:8px;padding:.5rem 1rem}[data-theme=light] .slideshow-nav button{color:var(--text-body);background:#00000008;border-color:#0000001a}