@layer base {
  .card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-6);
    box-shadow: var(--shadow);
    transition: all var(--animation-duration-normal) ease;
  }

  .card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
  }

  .header {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
  }

  .meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-3);
  }

  .date {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    color: var(--muted-foreground);
    font-size: 0.875rem;
  }

  .title {
    font-family: var(--font-family-heading);
    font-size: 1.5rem;
    font-weight: 600;
    line-height: 1.3;
    color: var(--foreground);
    margin: 0;
  }

  .summary {
    color: var(--muted-foreground);
    line-height: 1.6;
    margin: 0;
  }

  .expandButton {
    align-self: flex-start;
    margin-top: var(--spacing-2);
  }

  .content {
    margin-top: var(--spacing-6);
    padding-top: var(--spacing-6);
    border-top: 1px solid var(--border);
  }

  .fullContent {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
  }

  .paragraph {
    line-height: 1.7;
    color: var(--foreground);
    margin: 0;
  }

  /* Responsive design */
  @media (max-width: 768px) {
    .card {
      padding: var(--spacing-4);
    }

    .meta {
      flex-direction: column;
      align-items: flex-start;
      gap: var(--spacing-2);
    }

    .title {
      font-size: 1.25rem;
    }
  }
}