/* Course Section Styles */
.kn-course {
  padding: var(--spacing-2xl) 0;
  background-color: var(--bg-primary);
}

/* Header Styles */
.kn-course-header {
  margin-bottom: var(--spacing-xl);
  text-align: center;
}

.kn-course-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--secondary-color);
  margin-bottom: var(--spacing-md);
  line-height: 1.5;
}

.kn-course-subtitle {
  font-size: 1.125rem;
  color: #475569;
}

/* Navigation Styles */
.kn-course-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xl);
  border-bottom: 2px solid var(--text-color);
  padding-bottom: var(--spacing-lg);
}

.kn-course-nav-left {
  display: flex;
  gap: var(--spacing-lg);
}

.kn-course-nav-item {
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--text-color);
  cursor: pointer;
}

.kn-course-nav-item.kn-course-nav-item--active {
  color: var(--secondary-color);
  font-weight: 700;
}

.kn-course-nav-item:hover {
  color: var(--secondary-color);
  font-weight: 700;
}

.kn-course-nav-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.kn-course-nav-text {
  font-size: var(--font-size-base);
  color: var(--text-color);
  font-weight: 500;
}

.kn-course-nav-link {
  font-size: var(--font-size-base);
  color: var(--secondary-color);
  text-decoration: none;
  font-weight: 500;
}

.kn-course-nav-link:hover {
  text-decoration: underline;
}

/* Course List Styles */
.kn-course-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  max-height: calc(3 * (120px + var(--spacing-lg)));
  overflow-y: auto;
  padding-right: var(--spacing-xs);
}

.kn-course-list::-webkit-scrollbar {
  width: 6px;
}

.kn-course-list::-webkit-scrollbar-track {
  background: var(--bg-secondary);
  border-radius: var(--border-radius-sm);
}

.kn-course-list::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: var(--border-radius-sm);
}

.kn-course-list::-webkit-scrollbar-thumb:hover {
  background: var(--border-dark);
}

.kn-course-item {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr 170px;
  align-items: center;
  padding: var(--spacing-lg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  transition: var(--transition-normal);
  gap: var(--spacing-lg);
  min-height: 120px;
}

.kn-course-item:hover {
  border-color: var(--secondary-color);
  box-shadow: 0 4px 6px -1px rgba(18, 110, 175, 0.1);
}

/* Course Info Column */
.kn-course-info {
  display: flex;
  flex-direction: column;
}

.kn-course-date {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-color);
  margin-bottom: 2px;
}

.kn-course-time {
  font-size: var(--font-size-sm);
  color: var(--text-light);
}

/* Course Name Column */
.kn-course-name-col {
  display: flex;
  align-items: center;
}

.kn-course-name {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-color);
}

/* Course Duration Column */
.kn-course-duration {
  text-align: center;
}

.kn-course-hours {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--text-color);
}

.kn-course-hours-label {
  font-size: var(--font-size-sm);
  color: var(--text-light);
  margin-top: 2px;
}

/* Course Status Column */
.kn-course-status {
  text-align: center;
}

.kn-course-status-link {
  font-size: var(--font-size-sm);
  color: var(--secondary-color);
  text-decoration: none;
  font-weight: 500;
}

.kn-course-status-link:hover {
  text-decoration: underline;
}

.kn-course-price {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--secondary-color);
}

/* Course Action Column */

.kn-course-btn-icon {
  display: flex;
  align-items: center;
}
.kn-course-btn-icon i {
  font-size: 12px;
}

/* Empty State */
.kn-course-empty {
  text-align: center;
  padding: var(--spacing-2xl);
  color: var(--text-light);
}

/* Responsive Styles */

/* Tablet */
@media (max-width: 1024px) {
  .kn-course {
    padding: 3rem 0;
  }
  .kn-course-item {
    min-height: unset;
  }

  .kn-course-title {
    font-size: 2rem;
  }

  .kn-course-item {
    grid-template-columns: 1fr auto;
    gap: var(--spacing-sm);
  }
  .kn-course-name-col {
    justify-content: center;
  }
  .kn-course-duration,
  .kn-course-status {
    display: none;
  }
}

/* Mobile */
@media (max-width: 768px) {
  .kn-course-title {
    font-size: 1.75rem;
  }
  .kn-course-subtitle {
    font-size: 1rem;
  }

  .kn-course-nav {
    flex-direction: column;
    gap: var(--spacing-lg);
    align-items: stretch;
  }

  .kn-course-nav-left {
    justify-content: center;
  }

  .kn-course-nav-right {
    justify-content: center;
  }

  .kn-course-item {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--spacing-md);
  }

  .kn-course-action {
    text-align: center;
  }

  .kn-course-btn {
    width: 100%;
    justify-content: center;
  }
}

/* Mobile Small */
@media (max-width: 480px) {
  .kn-course {
    padding: 2rem 0;
  }

  .kn-course-nav-left {
    align-items: center;
    gap: var(--spacing-sm);
  }

  .kn-course-nav-right {
    flex-direction: column;
  }

  .kn-course-item {
    padding: var(--spacing-sm);
    min-height: auto;
  }

  .kn-course-date {
    font-size: var(--font-size-sm);
  }

  .kn-course-time {
    font-size: var(--font-size-xs);
  }

  .kn-course-name {
    font-size: var(--font-size-sm);
  }
}