/* ============================================
   LESSON 30 – Signposting Words
   ============================================ */

/* ── Inline explanation panels ── */
.l30-inline-exp {
  margin: 4px 0 10px 0;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: .97rem;
  line-height: 1.8;
  border: 1px solid var(--border);
}
.l30-exp-ok  { background: rgba(72,199,116,.08); border-color: var(--success); }
.l30-exp-err { background: rgba(255,100,100,.07); border-color: var(--error); }

/* Legend */
.l30-legend {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 10px;
  padding: 12px 16px;
  margin-bottom: 20px;
}
.l30-legend-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1rem;
}
.l30-legend-letter {
  font-weight: 700;
  color: var(--gold);
  min-width: 20px;
}
.l30-legend-text { color: var(--text-muted); }

/* Row list */
.l30-row-list { display: flex; flex-direction: column; gap: 14px; }

.l30-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 10px;
  padding: 12px 14px;
}

.l30-row-num {
  font-weight: 700;
  color: var(--gold);
  min-width: 22px;
  padding-top: 4px;
  font-size: 1rem;
}

/* Dropdown wrapper */
.l30-ddw {
  border-radius: 6px;
  border: 1.5px solid rgba(255,255,255,0.15);
  overflow: hidden;
  min-width: 64px;
}
.l30-ddw.l30-correct { border-color: var(--success); background: rgba(74,222,128,0.1); }
.l30-ddw.l30-wrong   { border-color: var(--error);   background: rgba(248,113,113,0.1); }

.l30-dd {
  background: transparent;
  color: var(--text-primary);
  border: none;
  padding: 6px 8px;
  font-size: .97rem;
  cursor: pointer;
  outline: none;
  width: 100%;
}
.l30-dd option { background: #1a1a1a; color: var(--text-primary); }

/* Extract area */
.l30-extract {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  flex: 1;
  font-size: 1rem;
  color: var(--text-primary);
  line-height: 1.6;
}
.l30-ctx { color: var(--text-muted); }

/* Blank input */
.l30-blank {
  background: rgba(255,255,255,0.06);
  border: 1.5px solid rgba(255,255,255,0.15);
  border-radius: 6px;
  color: var(--text-primary);
  padding: 5px 10px;
  font-size: .97rem;
  min-width: 140px;
  max-width: 240px;
  outline: none;
  transition: border-color .2s;
}
.l30-blank:focus { border-color: var(--gold); }
.l30-blank.l30-correct { border-color: var(--success); background: rgba(74,222,128,0.1); color: var(--success); }
.l30-blank.l30-wrong   { border-color: var(--error);   background: rgba(248,113,113,0.1); }

/* Shake animation */
@keyframes l30-shake {
  0%,100%{ transform:translateX(0); }
  20%    { transform:translateX(-5px); }
  40%    { transform:translateX(5px); }
  60%    { transform:translateX(-4px); }
  80%    { transform:translateX(4px); }
}
.l30-shake { animation: l30-shake .45s ease; }

/* Explanation */
.l30-exp-list { display: flex; flex-direction: column; gap: 10px; }
.l30-exp-row {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 1rem;
}
.l30-exp-phrase { color: var(--gold); font-weight: 600; min-width: 180px; }
.l30-exp-arrow  { color: var(--text-muted); }
.l30-exp-use    { color: var(--text-primary); }

/* Study Tip */
.l30-tip-intro {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 18px;
}
.l30-tip-box {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.l30-tip-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 10px;
  padding: 14px;
}
.l30-tip-icon { font-size: 1.3rem; padding-top: 2px; }
.l30-tip-title {
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 8px;
  font-size: 1rem;
}
.l30-tip-body { color: var(--text-muted); font-size: .97rem; margin: 0; }

/* Chips */
.l30-chip-row { display: flex; flex-wrap: wrap; gap: 6px; }
.l30-chip {
  padding: 3px 10px;
  border-radius: 20px;
  font-size: .8rem;
  font-weight: 600;
}
.l30-chip-start  { background: rgba(74,222,128,0.15); color: #4ade80; }
.l30-chip-change { background: rgba(96,165,250,0.15); color: #60a5fa; }
.l30-chip-end    { background: rgba(251,191,36,0.15);  color: var(--gold); }