.reading-passage {
  background: rgba(47, 159, 232, 0.06);
  border: 1px solid rgba(47, 159, 232, 0.18);
  border-radius: 16px;
  padding: 24px 28px;
  margin-bottom: 28px;
  display: flex;
  flex-direction: column;
}

/* ── Dialogue chat bubbles ── */
.dialogue-line {
  display: flex;
  flex-direction: column;
  margin-bottom: 12px;
  max-width: 82%;
}
.dialogue-line--a { align-items: flex-start; }
.dialogue-line--b { align-items: flex-end; margin-left: auto; }

.dialogue-name {
  font-size: 0.7rem;
  font-weight: 800;
  font-family: "Nunito", sans-serif;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
  padding: 0 4px;
}
.dialogue-bubble {
  padding: 10px 14px;
  border-radius: 16px;
  font-size: 0.98rem;
  font-weight: 600;
  font-family: "Source Sans 3", sans-serif;
  color: var(--text);
  line-height: 1.5;
}
.dialogue-line--a .dialogue-bubble {
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(47, 159, 232, 0.15);
  border-bottom-left-radius: 4px;
}
.dialogue-line--b .dialogue-bubble {
  background: rgba(47, 159, 232, 0.12);
  border: 1px solid rgba(47, 159, 232, 0.25);
  border-bottom-right-radius: 4px;
}

.passage-text {
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.85;
  margin: 0;
  font-family: "Source Sans 3", sans-serif;
}

.passage-trans-btn {
  display: inline-flex;
  align-items: center;
  margin-top: 14px;
  padding: 5px 14px;
  border-radius: 8px;
  border: 1px solid rgba(47, 159, 232, 0.28);
  background: transparent;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
  font-family: "Nunito", sans-serif;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.passage-trans-btn:hover { background: rgba(255, 255, 255, 0.6); color: var(--text); }

.passage-trans-wrap {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.38s cubic-bezier(0.22, 1, 0.36, 1);
}
.passage-trans-wrap.open {
  grid-template-rows: 1fr;
}
.passage-trans-inner {
  overflow: hidden;
}

.passage-translation {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--muted);
  line-height: 1.75;
  margin: 14px 0 0;
  padding-top: 14px;
  border-top: 1px solid rgba(47, 159, 232, 0.15);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.28s ease 0.1s, transform 0.28s ease 0.1s;
}
.passage-trans-wrap.open .passage-translation {
  opacity: 1;
  transform: translateY(0);
}


.reading-question {
  margin-bottom: 8px;
}

.rq-label {
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 8px;
}

.rq-text {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  font-family: "Nunito", sans-serif;
  margin: 0 0 20px;
  line-height: 1.4;
}

.q-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 14px;
}

.q-opt {
  padding: 14px 18px;
  border-radius: 14px;
  border: 1.5px solid var(--line);
  background: rgba(255, 255, 255, 0.8);
  color: var(--text);
  font-size: 1rem;
  font-weight: 700;
  font-family: "Nunito", sans-serif;
  cursor: pointer;
  text-align: left;
  transition: background 0.15s, border-color 0.15s, transform 0.15s;
}

.q-opt:hover:not(:disabled) {
  background: rgba(47, 159, 232, 0.08);
  border-color: var(--primary);
  transform: translateX(3px);
}

.q-opt--correct  { background: rgba(52, 201, 137, 0.15); border-color: #34c989; color: #1a7a50; }
.q-opt--wrong    { background: rgba(240, 92, 92, 0.12);  border-color: #f05c5c; color: #b83232; }
.q-opt--disabled { opacity: 0.42; }

.q-feedback {
  font-size: 0.95rem;
  font-weight: 700;
  padding: 10px 14px;
  border-radius: 10px;
  margin-top: 4px;
}
.q-feedback--correct { background: rgba(52, 201, 137, 0.12); color: #1a7a50; }
.q-feedback--wrong   { background: rgba(240, 92, 92, 0.1);  color: #b83232; }

@media (max-width: 640px) {
  .reading-passage { padding: 16px; border-radius: 12px; margin-bottom: 20px; }
  .passage-text { font-size: 0.97rem; }
  .dialogue-line { max-width: 90%; margin-bottom: 10px; }
  .dialogue-bubble { font-size: 0.92rem; padding: 9px 12px; }
  .dialogue-name { font-size: 0.65rem; }
  .passage-trans-btn { margin-top: 10px; font-size: 0.78rem; }
  .rq-text { font-size: 1rem; margin: 0 0 16px; }
  .q-opt { padding: 12px 14px; font-size: 0.92rem; border-radius: 12px; }
  .rq-label { font-size: 0.72rem; }
}