.page-courses {
  background: #f5f6f8;
}

.page-courses .main-content {
  background: #f5f6f8;
}

.courses-banner {
  width: 100%;
  line-height: 0;
  overflow: hidden;
}

.courses-banner img {
  width: 100%;
  height: auto;
  display: block;
  max-height: 280px;
  object-fit: cover;
}

.courses-breadcrumb {
  background: transparent;
  padding: var(--spacing-lg) 0 var(--spacing-md);
}

.courses-breadcrumb__inner {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.courses-breadcrumb__icon {
  width: 26px;
  height: 26px;
  object-fit: contain;
  flex-shrink: 0;
}

.courses-breadcrumb__list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  font-size: var(--font-size-base);
  color: var(--color-text-light);
}

.courses-breadcrumb__list li {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.courses-breadcrumb__list li:not(:last-child)::after {
  content: ">";
  color: var(--color-text-muted);
}

.courses-breadcrumb__list a:hover {
  color: var(--color-primary);
}

.courses-breadcrumb__list li:last-child span {
  color: var(--color-text);
}

.courses-main {
  padding: var(--spacing-lg) 0 var(--spacing-3xl);
}

.courses-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: var(--spacing-xl);
  align-items: start;
}

.filter-panel {
  background: #ffffff;
  padding: var(--spacing-xl);
  border: 1px solid var(--color-border-light);
  position: sticky;
  top: var(--spacing-lg);
}

.filter-panel__title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid #58a6f7;
}

.filter-group {
  margin-bottom: var(--spacing-lg);
}

.filter-group__label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.filter-group__input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  outline: none;
  transition: border-color var(--transition-fast);
}

.filter-group__input:focus {
  border-color: #58a6f7;
}

.filter-group__options {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.filter-option {
  padding: 0.35rem 0.85rem;
  font-size: var(--font-size-sm);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: #ffffff;
  color: var(--color-text-light);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.filter-option:hover,
.filter-option--active {
  background: #58a6f7;
  color: #ffffff;
  border-color: #58a6f7;
}

.courses-content__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
  gap: var(--spacing-md);
  background: #ffffff;
  padding: var(--spacing-lg) var(--spacing-xl);
  border: 1px solid var(--color-border-light);
}

.courses-content__count {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

.courses-content__count strong {
  color: #58a6f7;
  font-size: var(--font-size-lg);
}

.courses-content__sort select {
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  outline: none;
  cursor: pointer;
  background: #ffffff;
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.courses-grid .course-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: #ffffff;
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

.courses-grid .course-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.courses-grid .course-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.courses-grid .course-card__footer {
  margin-top: auto;
  justify-content: space-between;
}

.courses-grid .course-card__cover-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #bbbbbb;
  background: #f0f0f0;
}

.courses-grid .course-card__cover-icon {
  width: 40px;
  height: 40px;
  opacity: 0.6;
}

.courses-grid .course-card__class-type {
  font-size: var(--font-size-sm);
  color: #999999;
}

.courses-content .pagination {
  margin-top: var(--spacing-xl);
}

@media (max-width: 1024px) {
  .courses-layout {
    grid-template-columns: 1fr;
  }

  .filter-panel {
    position: static;
  }

  .courses-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .courses-banner img {
    max-height: 160px;
  }

  .courses-grid {
    grid-template-columns: 1fr;
  }
}