/* practice.css - Danh sách Part, Đề, Bộ lọc và Chế độ Học từng câu */
.part-header-banner {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.35rem 1.5rem;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.filter-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  background: var(--bg-surface);
  padding: 0.85rem 1.1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}
.filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.filter-pill {
  padding: 0.38rem 0.8rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-elevated);
  border: 1px solid transparent;
  transition: all 0.15s;
}
.filter-pill.active {
  background: var(--primary-500);
  color: #fff;
}
.tests-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.1rem;
}
.test-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1rem;
}
.test-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
}
.test-card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}
.test-card-meta {
  display: flex;
  gap: 0.85rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}
.test-card-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}