/* ============================================
   LESSON 13 — SPECIFIC STYLES
   Identifying Distractors
   ============================================ */

/* ── Question List ── */
.l13-qlist {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 8px;
}

.l13-qrow {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
}

.l13-qrow-top {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

/* ── Inline explanation panels ── */
.l13-exp-inline {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  border-radius: var(--radius);
  padding: 10px 14px;
  font-size: .97rem;
  line-height: 1.6;
}
.l13-exp-ok {
  background: rgba(72,199,116,.1);
  border: 1px solid rgba(72,199,116,.3);
  color: var(--success);
}
.l13-exp-err {
  background: rgba(255,100,100,.08);
  border: 1px solid rgba(255,100,100,.25);
  color: var(--text);
}
.l13-exp-icon {
  flex-shrink: 0;
  font-size: 1rem;
  margin-top: 2px;
}
.l13-exp-ok .l13-exp-icon { color: var(--success); }
.l13-exp-err .l13-exp-icon { color: var(--error); }
.l13-exp-correct-lbl { color: var(--success); font-weight: 600; margin-bottom: 3px; }
.l13-exp-note { color: var(--text-muted); font-size: 1rem; }
  padding: 14px 16px;
  background: var(--bg-card-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  flex-wrap: wrap;
}

.l13-qnum {
  font-weight: 800;
  color: var(--gold);
  font-size: 1rem;
  min-width: 20px;
  flex-shrink: 0;
}

.l13-qlabel {
  flex: 1;
  font-size: 1rem;
  color: var(--text);
  line-height: 1.5;
  min-width: 160px;
}

/* ── Input ── */
.l13-inp {
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 1rem;
  padding: 6px 12px;
  width: 180px;
  transition: border-color .2s, box-shadow .2s;
  outline: none;
  flex-shrink: 0;
}
.l13-inp:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(201,168,76,.15);
}
.l13-inp.l13-correct {
  border-color: var(--success) !important;
  background: rgba(72,199,116,.1) !important;
  color: var(--success) !important;
}
.l13-inp.l13-wrong {
  border-color: var(--error) !important;
  background: rgba(255,100,100,.08) !important;
  color: var(--error) !important;
}

/* ── Shake ── */
@keyframes l13shake {
  0%,100% { transform: translateX(0); }
  20%     { transform: translateX(-6px); }
  40%     { transform: translateX(6px); }
  60%     { transform: translateX(-4px); }
  80%     { transform: translateX(4px); }
}
.l13-shake { animation: l13shake .45s ease; }

/* ── Explanation ── */
.l13-exp-card {
  background: var(--bg-card-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 10px;
}
.l13-exp-top {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}
.l13-exp-num {
  font-weight: 800;
  color: var(--gold);
  font-size: 1rem;
  min-width: 18px;
}
.l13-exp-correct {
  font-weight: 700;
  color: var(--success);
  font-size: 1rem;
}
.l13-exp-dist {
  font-size: 1rem;
  color: var(--error);
  opacity: .85;
  letter-spacing: .02em;
}
.l13-exp-why {
  font-size: .97rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

/* ── Study Tip ── */
.l13-tip-alert {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: rgba(201,168,76,.08);
  border: 1px solid rgba(201,168,76,.3);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 20px;
}

.l13-tip-rules {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.l13-tr-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 14px 16px;
  background: var(--bg-card-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.l13-tr-icon  { color: var(--success); font-size: 1.25rem; margin-top: 2px; flex-shrink: 0; }
.l13-tr-title { font-weight: 600; color: var(--text); margin-bottom: 4px; font-size: 1rem; }
.l13-tr-body  { font-size: .97rem; color: var(--text-muted); line-height: 1.6; margin: 0; }

/* ── Responsive ── */
@media (max-width: 500px) {
  .l13-qrow  { flex-direction: column; align-items: flex-start; }
  .l13-inp   { width: 100%; }
}