/* CSS Fonts Demo Styles */
body {
  font-family: 'Segoe UI', Arial, sans-serif;
  background: #f8fafc;
  color: #222;
  margin: 0;
  padding: 0;
}

main {
  max-width: 800px;
  margin: 2rem auto;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.07);
  padding: 2rem 2.5rem;
}

h1 {
  text-align: center;
  color: #3a3a7a;
  margin-bottom: 2rem;
}

section {
  margin-bottom: 2.5rem;
}

.theory {
  background: #e6f0fa;
  border-left: 5px solid #3498db;
  padding: 1rem 1.5rem;
  border-radius: 6px;
  margin-bottom: 0.5rem;
}

.code-example {
  background: #23272e;
  color: #f8f8f2;
  border-radius: 6px;
  padding: 1rem 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 2px 8px rgba(52,152,219,0.07);
}

.code-example pre {
  background: #181a20;
  color: #e6db74;
  padding: 0.75rem 1rem;
  border-radius: 4px;
  overflow-x: auto;
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.code-example .demo-text {
  background: #f4f8fb;
  color: #23272e;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  margin-top: 0.5rem;
  font-size: 1.1em;
  transition: background 0.2s;
}

.code-example .demo-text:hover {
  background: #d6eaff;
}

nav {
  background: #e6f0fa;
  padding: 1rem 0;
  text-align: left;
  border-bottom: 1px solid #d0e2f2;
}

.back-btn {
  background: #3498db;
  color: #fff;
  border: none;
  border-radius: 4px;
  padding: 0.5rem 1.2rem;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s, box-shadow 0.2s;
  box-shadow: 0 2px 8px rgba(52,152,219,0.07);
}

.back-btn:hover, .back-btn:focus {
  background: #217dbb;
  outline: none;
}

@media (max-width: 600px) {
  main {
    padding: 1rem 0.5rem;
  }
  h1 {
    font-size: 1.5rem;
  }
}

/* Demo for @font-face (no actual font file, just for code example) */
@font-face {
  font-family: 'MyFont';
  src: url('MyFont.woff2') format('woff2');
}
.custom-font {
  font-family: 'MyFont', sans-serif;
}

.font-family-demo {
  font-family: 'Segoe UI', Arial, sans-serif;
}
.heading-serif {
  font-family: 'Times New Roman', Times, serif;
  font-size: 1.5rem;
  margin-top: 1rem;
}
.code-mono {
  font-family: 'Fira Mono', 'Consolas', monospace;
  background: #eaeaea;
  padding: 0.2em 0.5em;
  border-radius: 3px;
  font-size: 1.1em;
}

.font-size-large {
  font-size: 2.5rem;
}
.font-size-small {
  font-size: 0.8em;
}
.font-size-keyword {
  font-size: large;
}

.font-weight-bold {
  font-weight: bold;
}
.font-weight-light {
  font-weight: 300;
}
.font-weight-bolder {
  font-weight: bolder;
}

.font-style-italic {
  font-style: italic;
}
.font-style-oblique {
  font-style: oblique;
}

.font-variant-smallcaps {
  font-variant: small-caps;
}

.custom-font-demo {
  font-family: 'MyFont', Arial, sans-serif;
}

.fallback-cursive {
  font-family: 'Pacifico', cursive;
}