/* ============================================
   QUIZ CARDS
   ============================================ */
.quiz-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.25rem}
.quiz-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:all .3s;cursor:pointer;display:flex;flex-direction:column}
.quiz-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--primary)}
.quiz-card-img{aspect-ratio:16/9;background-size:cover;background-position:center;position:relative}
.quiz-card-img::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 60%,rgba(0,0,0,.3) 100%)}
.quiz-card-badge{position:absolute;top:.75rem;left:.75rem;padding:.35rem .7rem;background:rgba(0,0,0,.7);backdrop-filter:blur(8px);border-radius:100px;font-size:.75rem;font-weight:600;color:#fff;z-index:1}
.quiz-card-body{padding:1.25rem;flex:1;display:flex;flex-direction:column}
.quiz-card-title{font-weight:700;font-size:1.05rem;margin-bottom:.5rem;line-height:1.35}
.quiz-card-desc{font-size:.88rem;color:var(--text-muted);margin-bottom:1rem;flex:1;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.quiz-card-meta{display:flex;align-items:center;gap:1rem;font-size:.8rem;color:var(--text-muted);padding-top:.75rem;border-top:1px solid var(--border)}
.quiz-card-meta span{display:flex;align-items:center;gap:.3rem}

/* Difficulty badges */
.difficulty{display:inline-flex;align-items:center;gap:.3rem;padding:.2rem .6rem;border-radius:100px;font-size:.72rem;font-weight:600}
.diff-easy{background:color-mix(in srgb,var(--success) 15%,transparent);color:var(--success)}
.diff-medium{background:color-mix(in srgb,var(--warning) 15%,transparent);color:var(--warning)}
.diff-hard{background:color-mix(in srgb,var(--danger) 15%,transparent);color:var(--danger)}

/* ============================================
   QUIZ PAGE
   ============================================ */
.quiz-layout{max-width:800px;margin:0 auto;padding:2rem 0}
.quiz-header{margin-bottom:2rem}
.quiz-progress{height:8px;background:var(--border);border-radius:100px;overflow:hidden;margin-bottom:1rem}
.quiz-progress-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--accent));transition:width .4s;border-radius:100px}
.quiz-progress-info{display:flex;justify-content:space-between;font-size:.85rem;color:var(--text-muted);margin-bottom:1.5rem}
.quiz-question{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:2rem;margin-bottom:1.5rem;box-shadow:var(--shadow)}
.quiz-question-num{display:inline-block;padding:.3rem .8rem;background:var(--primary);color:#fff;border-radius:100px;font-size:.8rem;font-weight:600;margin-bottom:1rem}
.quiz-question-text{font-size:1.25rem;font-weight:700;line-height:1.4;margin-bottom:1.5rem}
.quiz-options{display:flex;flex-direction:column;gap:.75rem}
.quiz-option{display:flex;align-items:center;gap:1rem;padding:1rem 1.25rem;background:var(--bg-alt);border:2px solid var(--border);border-radius:var(--radius);cursor:pointer;transition:all .2s;font-size:.95rem;text-align:left;width:100%}
.quiz-option:hover:not(:disabled){border-color:var(--primary);background:color-mix(in srgb,var(--primary) 5%,var(--bg-alt))}
.quiz-option.selected{border-color:var(--primary);background:color-mix(in srgb,var(--primary) 10%,var(--bg-alt))}
.quiz-option.correct{border-color:var(--success);background:color-mix(in srgb,var(--success) 10%,var(--bg-alt))}
.quiz-option.wrong{border-color:var(--danger);background:color-mix(in srgb,var(--danger) 10%,var(--bg-alt))}
.quiz-option-letter{width:32px;height:32px;border-radius:8px;background:var(--bg-card);border:1px solid var(--border);display:grid;place-items:center;font-weight:700;font-size:.9rem;flex-shrink:0}
.quiz-option.selected .quiz-option-letter{background:var(--primary);color:#fff;border-color:var(--primary)}
.quiz-option.correct .quiz-option-letter{background:var(--success);color:#fff;border-color:var(--success)}
.quiz-option.wrong .quiz-option-letter{background:var(--danger);color:#fff;border-color:var(--danger)}
.quiz-explanation{margin-top:1rem;padding:1rem;background:color-mix(in srgb,var(--primary) 8%,var(--bg-alt));border-left:4px solid var(--primary);border-radius:8px;font-size:.9rem;color:var(--text)}
.quiz-actions{display:flex;justify-content:space-between;gap:1rem;margin-top:1.5rem}

/* Result */
.quiz-result{text-align:center;padding:3rem 2rem;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg)}
.quiz-result-icon{width:100px;height:100px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));display:grid;place-items:center;margin:0 auto 1.5rem;font-size:3rem;color:#fff;animation:pop .5s}
.quiz-result h2{font-size:1.8rem;font-weight:800;margin-bottom:.5rem}
.quiz-result-score{font-size:3rem;font-weight:900;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;margin:1rem 0}
.quiz-result-msg{font-size:1.1rem;color:var(--text-muted);margin-bottom:2rem}
.quiz-result-actions{display:flex;gap:.75rem;justify-content:center;flex-wrap:wrap}