/*

* The Principles That Changed How I Build for Everyone
* MX-compliant blog post styles
* Optimized for both human readers and machine readability
 * @file principles-changed-how-i-build.css
 * @version 1.0
 * @author Tom Cranstoun
 *
 * @mx:category mx-tools
 * @mx:status active
 * @mx:contentType stylesheet
 * @mx:tags tool
 * @mx:partOf mx-os

 */

/*Reset and Base Styles*/

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: #1f2937;
  background: #ffffff;
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
}

/*Header*/
header {
  background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
  color: white;
  padding: 3rem 2rem;
  margin: -2rem -2rem 3rem -2rem;
  border-radius: 0 0 12px 12px;
}

header h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  font-weight: 700;
  line-height: 1.2;
}

.article-meta {
  color: #e0e7ff;
  font-size: 0.95rem;
}

.article-meta time {
  font-style: italic;
}

.article-meta span {
  margin: 0 0.5rem;
}

/*Main Content*/
main {
  padding: 2rem 0;
}

article {
  background: white;
}

/*Typography*/
h2 {
  color: #1e40af;
  font-size: 2rem;
  margin: 2.5rem 0 1rem 0;
  font-weight: 700;
  line-height: 1.3;
}

h3 {
  color: #2563eb;
  font-size: 1.5rem;
  margin: 2rem 0 0.75rem 0;
  font-weight: 600;
}

p {
  margin-bottom: 1rem;
  color: #374151;
  font-size: 1.1rem;
}

strong {
  color: #1f2937;
  font-weight: 600;
}

em {
  font-style: italic;
  color: #4b5563;
}

/*Links*/
a {
  color: #2563eb;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

a:hover {
  border-bottom-color: #2563eb;
}

a:focus {
  outline: 2px solid #2563eb;
  outline-offset: 2px;
}

/*Horizontal Rules*/
hr {
  border: none;
  border-top: 2px solid #e5e7eb;
  margin: 3rem 0;
}

/*Footer*/
footer {
  background: #f9fafb;
  border-top: 2px solid #e5e7eb;
  border-radius: 12px;
  padding: 2rem;
  margin: 4rem -2rem -2rem -2rem;
  text-align: center;
}

footer p {
  color: #374151;
  margin: 0.5rem 0;
  font-size: 0.95rem;
}

/*Accessibility Improvements*/
@media (prefers-reduced-motion: reduce) {

* {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/*Responsive Design*/
@media (max-width: 768px) {
  body {
    padding: 1rem;
  }

  header {
    margin: -1rem -1rem 2rem -1rem;
    padding: 2rem 1rem;
  }

  header h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.5rem;
    margin: 2rem 0 1rem 0;
  }

  h3 {
    font-size: 1.25rem;
  }

  p {
    font-size: 1rem;
  }

  footer {
    margin: 3rem -1rem -1rem -1rem;
    padding: 1.5rem;
  }
}

/*Print Styles*/
@media print {
  body {
    background: white;
    color: black;
    font-size: 12pt;
  }

  header {
    background: none;
    color: black;
    border-bottom: 2px solid black;
  }

  a {
    color: black;
    text-decoration: underline;
  }

  footer {
    background: none;
    border-top: 2px solid black;
  }
}