/* ── Difficulty stat cards ───────────────────────────────────────────────── */
.lc-stats {
  display: flex;
  gap: 1rem;
  margin: 1.5rem 0 2rem;
  flex-wrap: wrap;
}

.lc-stat {
  flex: 1;
  min-width: 120px;
  border-radius: 0.6rem;
  padding: 1.4rem 1rem;
  text-align: center;
  background: var(--md-default-bg-color);
  border: 1px solid var(--md-default-fg-color--lightest);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.lc-stat:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.lc-easy   { border-top: 4px solid #4caf50; }
.lc-medium { border-top: 4px solid #ff9800; }
.lc-hard   { border-top: 4px solid #f44336; }

.lc-num {
  display: block;
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
}

.lc-easy   .lc-num { color: #4caf50; }
.lc-medium .lc-num { color: #ff9800; }
.lc-hard   .lc-num { color: #f44336; }

.lc-label {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--md-default-fg-color--light);
}

/* ── Pattern progress bar inside admonitions ─────────────────────────────── */
.lc-progress-bar {
  height: 6px;
  background: var(--md-default-fg-color--lightest);
  border-radius: 3px;
  margin: 0.25rem 0 1rem;
  overflow: hidden;
}

.lc-progress-fill {
  height: 100%;
  background: var(--md-primary-fg-color);
  border-radius: 3px;
  transition: width 0.4s ease;
  min-width: 2px;
}

/* tint fill for success (100%) admonitions */
.md-typeset .admonition.success .lc-progress-fill,
.md-typeset details.success .lc-progress-fill {
  background: #4caf50;
}