/* 学习统计页 */

.stats-overview {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 18px;
  padding: 20px;
  border: 1px solid rgba(120, 128, 150, .14);
  border-radius: 16px;
  background: var(--card, #fff);
}

.stats-overview-main {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.stats-overview-main strong {
  font-size: 40px;
  letter-spacing: -0.04em;
}

.stats-overview-main span {
  color: var(--muted);
  font-size: 14px;
}

.stats-overview-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  color: var(--muted);
  font-size: 13px;
}

.stats-card {
  margin-bottom: 18px;
  padding: 18px;
  border: 1px solid rgba(120, 128, 150, .14);
  border-radius: 16px;
  background: var(--card, #fff);
}

.stats-card h3 {
  margin: 0 0 14px;
  font-size: 17px;
}

.stats-chart {
  display: block;
  width: 100%;
  height: auto;
}

.stats-error-block {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px;
  border: 1px solid rgba(227, 79, 79, .3);
  border-radius: 12px;
  background: rgba(227, 79, 79, .06);
  color: var(--danger, #e34f4f);
  font-size: 13px;
}

.loading-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 24px 0;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 560px) {
  .stats-overview {
    flex-direction: column;
    align-items: flex-start;
  }
}