/* Interview Q&A — outstanding reader experience */
.iqa-hero {
    padding: 1.5rem 0 2.5rem;
    background: linear-gradient(165deg, rgba(99, 102, 241, 0.12) 0%, rgba(15, 15, 35, 0) 55%);
}
.iqa-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin-top: 1.5rem;
}
.iqa-stat {
    padding: 0.75rem 1.25rem;
    border-radius: 999px;
    border: 1px solid var(--border-color);
    background: var(--bg-glass);
    font-size: 0.88rem;
}
.iqa-stat strong { color: var(--primary-light); }

.iqa-toolbar {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 1rem;
    padding: 1.25rem;
    margin-bottom: 1.5rem;
}
.iqa-chip-row { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1rem; }
.iqa-chip {
    font-size: 0.82rem;
    padding: 0.35rem 0.85rem;
    border-radius: 999px;
    border: 1px solid var(--border-color);
    text-decoration: none;
    color: var(--text-secondary);
    background: var(--bg-glass);
    transition: border-color 0.15s, color 0.15s;
}
.iqa-chip:hover, .iqa-chip.active {
    border-color: var(--primary);
    color: var(--primary-light);
}
.iqa-chip.active { background: rgba(99, 102, 241, 0.12); }

.iqa-view-toggle .btn.active { background: var(--primary); border-color: var(--primary); color: #fff; }

.iqa-card {
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    background: var(--bg-glass);
    padding: 1.25rem;
    height: 100%;
    transition: border-color 0.15s, transform 0.15s;
}
.iqa-card:hover { border-color: rgba(99, 102, 241, 0.45); transform: translateY(-2px); }
.iqa-card-premium { border-left: 3px solid #22c55e; }
.iqa-card-question { font-weight: 600; font-size: 1rem; line-height: 1.45; margin-bottom: 0.75rem; }
.iqa-card-preview { font-size: 0.88rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 1rem; }

.interview-answer {
    font-size: 1.05rem;
    line-height: 1.85;
    color: var(--text-secondary);
}
.interview-answer h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-top: 1.5rem;
    margin-bottom: 0.65rem;
    color: var(--text-primary);
}
.interview-answer h3:first-child { margin-top: 0; }
.interview-answer ol, .interview-answer ul { padding-left: 1.35rem; margin-bottom: 1rem; }
.interview-answer li { margin-bottom: 0.4rem; }
.interview-answer pre, .interview-answer code {
    font-size: 0.88rem;
}
.interview-answer pre {
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1rem;
    overflow-x: auto;
}
.interview-answer blockquote {
    border-left: 3px solid #f59e0b;
    padding-left: 1rem;
    margin: 1.25rem 0;
    color: var(--text-muted);
}
.interview-answer p strong:first-child { color: var(--text-primary); }

.iqa-show-layout { display: grid; grid-template-columns: 1fr; gap: 2rem; }
@media (min-width: 992px) {
    .iqa-show-layout { grid-template-columns: minmax(0, 1fr) 280px; }
}
.iqa-show-sidebar {
    position: sticky;
    top: 100px;
    align-self: start;
}
.iqa-framework-card {
    border: 1px solid rgba(99, 102, 241, 0.25);
    border-radius: 1rem;
    padding: 1.25rem;
    background: rgba(99, 102, 241, 0.06);
    margin-bottom: 1rem;
}
.iqa-framework-card ol { padding-left: 1.2rem; margin: 0; font-size: 0.88rem; }
.iqa-framework-card li { margin-bottom: 0.35rem; color: var(--text-secondary); }

#interviewAccordion .accordion-button:not(.collapsed) {
    background: rgba(99, 102, 241, 0.15) !important;
    color: var(--text-primary) !important;
    box-shadow: none;
}
#interviewAccordion .accordion-button { font-weight: 600; line-height: 1.45; }

.lesson-interview-qa {
    margin-top: 2rem;
    padding: 1.5rem;
    border-radius: 1rem;
    border: 1px solid rgba(245, 158, 11, 0.25);
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.08), rgba(99, 102, 241, 0.05));
}
.lesson-interview-qa-item {
    display: block;
    padding: 0.85rem 1rem;
    border-radius: 0.65rem;
    border: 1px solid var(--border-color);
    background: var(--bg-glass);
    text-decoration: none;
    color: inherit;
    margin-bottom: 0.65rem;
    transition: border-color 0.15s;
}
.lesson-interview-qa-item:hover { border-color: var(--primary); color: inherit; }
.lesson-interview-qa-item:last-child { margin-bottom: 0; }