/* ==========================================================================
   Class 11 Chemistry — supplementary styles
   Additive only: reuses design tokens (--green, --ochre, --rust, --surface,
   --ink, --line, --radius, --shadow-card, --font-display/body) already
   defined in the shared css/style.css. Does not override any existing rule.
   ========================================================================== */

.formula-box, .reaction-box {
  background: var(--surface-strong);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin: 22px 0;
}

.formula-box h4, .reaction-box h4 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--green-deep);
}
[data-theme="dark"] .formula-box h4, [data-theme="dark"] .reaction-box h4 { color: var(--green); }

.formula-box ul, .reaction-box ul {
  margin: 0;
  padding-left: 0;
  list-style: none;
}

.formula-box li {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  padding: 7px 0;
  border-bottom: 1px dashed var(--line-soft);
  color: var(--ink);
}
.formula-box li:last-child { border-bottom: none; }

.reaction-box li { padding: 6px 0; }
.reaction-eq {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--rust);
  background: var(--rust-tint);
  padding: 3px 8px;
  border-radius: 6px;
  display: inline-block;
  line-height: 1.5;
}

.diagram-section { margin: 26px 0 10px; }
.diagram-section h4 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--green-deep);
}
[data-theme="dark"] .diagram-section h4 { color: var(--green); }

.diagram-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

.diagram-card {
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 12px;
  box-shadow: var(--shadow-card);
}

.diagram-svg-wrap { width: 100%; }
.diagram-svg-wrap svg { width: 100%; height: auto; display: block; }

.diagram-title {
  margin-top: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink-soft);
  text-align: center;
}

.numerical-card summary { font-family: var(--font-mono); }

.neet-tag, .practice-tag, .jee-tag {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 2px 8px;
  border-radius: 20px;
  margin-bottom: 8px;
}
.neet-tag { background: var(--green-tint); color: var(--green-deep); }
[data-theme="dark"] .neet-tag { background: var(--green-tint); color: var(--green); }
.practice-tag, .jee-tag { background: var(--ochre-tint); color: var(--ochre); }

@media (max-width: 480px) {
  .diagram-grid { grid-template-columns: 1fr; }
  .formula-box, .reaction-box { padding: 14px 16px; }
}

/* --- Responsive safety net (added): prevent long reaction equations from
   causing horizontal overflow on narrow screens. Additive only. --- */
.reaction-eq {
  overflow-wrap: break-word;
  word-break: break-word;
  white-space: normal;
}