* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: #f5f7fb;
  color: #1a1a1a;
  line-height: 1.6;
}

.blog-options {
  margin-top: 0;
  display: flex;
  justify-content: space-around;
  align-items: center;
}

.blog-options span {
  cursor: pointer;
  font-size: 1.5em;
  color: #666;
  transition: color 0.2s;
  padding: 0.2em;
  border-radius: 8px;
  border: 1px solid #eee;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.blog-card {
  max-width: 100%;
  margin: 3em auto;
  padding: 2em;
  background: #ffffff;
  border-radius: 18px;
  box-shadow: 0 10px 35px rgba(0, 0, 0, 0.08);
}

.blog-card h1 {
  font-size: 2.2em;
  margin-bottom: 0.6em;
  line-height: 1.3;
}

.blog-meta {
  font-size: 0.9em;
  color: #666;
  margin-bottom: 1.8em;
}

.blog-content p {
  margin: 1em 0;
  font-size: 1.05em;
  color: #333;
}

.blog-content figure {
  margin: 2em 0;
}

.blog-content img {
  width: 100%;
  border-radius: 12px;
  display: block;
}

.blog-content figcaption {
  font-size: 0.85em;
  color: #777;
  margin-top: 0.5em;
  text-align: center;
}

.blog-tags {
  margin-top: 2em;
}

.blog-tags a {
  display: inline-block;
  margin: 4px 6px 4px 0;
  padding: 6px 12px;
  font-size: 0.85em;
  background: #eef2ff;
  color: #4f46e5;
  border-radius: 999px;
  text-decoration: none;
  transition: 0.2s;
}

.blog-tags a:hover {
  background: #4f46e5;
  color: #fff;
}

.external-links {
  margin-top: 2.5em;
  padding-top: 1.5em;
  border-top: 1px solid #eee;
}

.external-links h3 {
  font-size: 1.1em;
  margin-bottom: 0.8em;
}

.external-links ul {
  padding-left: 1.2em;
}

.external-links a {
  color: #0d6efd;
  text-decoration: none;
}

.external-links a:hover {
  text-decoration: underline;
}

.back-link {
  display: inline-block;
  margin-top: 2.5em;
  font-size: 0.9em;
  color: #0d6efd;
  text-decoration: none;
}

.back-link:hover {
  text-decoration: underline;
}

@media (max-width: 768px) {
  .blog-card {
    margin: 1.2em;
    padding: 1.5em;
  }

  .blog-card h1 {
    font-size: 1.6em;
  }
}