/* Fonts */
@font-face {
  font-family: 'IBM Plex Sans';
  src: url('media/fonts/IBMPlexSans/IBMPlexSans-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Sans';
  src: url('media/fonts/IBMPlexSans/IBMPlexSans-Bold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { background: #1a1a1a; }

body {
  font-family: 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  max-width: 44em;
  margin: 0 auto;
  padding: 2em 1.5em;
  background: #1f1f1f;
  color: #ccc;
  font-size: 1.05em;
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

/* Navigation */
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1em;
  border-bottom: 1px solid #333;
  margin-bottom: 1.5em;
  flex-wrap: wrap;
  gap: 0.5em;
}

.brand a {
  font-size: 1.3em;
  text-decoration: none;
  color: #e6e6e6;
}
.brand small {
  font-size: 0.7em;
  color: #888;
}

.nav-links {
  display: flex;
  gap: 1.2em;
}

.nav-links a {
  color: #80bfff;
  text-decoration: none;
}
.nav-links a:hover {
  text-decoration: underline;
}

/* Content */
h1 { color: #e6e6e6; margin: 0.8em 0 0.5em; font-size: 1.8em; }
h2 { color: #e6e6e6; margin: 1.2em 0 0.4em; font-size: 1.4em; }
h3 { color: #e6e6e6; margin: 1em 0 0.3em; font-size: 1.15em; }

p { margin: 0.8em 0; }

a { color: #80bfff; }
a:visited { color: #b3b3ff; }

section { margin: 1.5em 0; }

ul, ol { padding-left: 1.5em; margin: 0.6em 0; }
li { margin: 0.3em 0; }

code {
  font-family: 'Fira Code', Menlo, 'Courier New', monospace;
  font-size: 0.88em;
  background: #222;
  color: #ffecb3;
  padding: 0.15em 0.3em;
  border-radius: 3px;
}

img {
  max-width: 100%;
  height: auto;
}

hr { border: none; border-top: 1px solid #333; margin: 1.5em 0; }

/* Footer */
footer {
  margin-top: 2em;
  padding-top: 1em;
  border-top: 1px solid #333;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.8em;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 0.8em;
}

.footer-links a {
  display: flex;
  align-items: center;
}

.footer-links svg {
  display: block;
  transition: opacity 0.15s;
}
.footer-links a:hover svg {
  opacity: 0.7;
}

.footer-copy {
  color: #666;
  font-size: 0.85em;
}

/* Responsive */
@media (max-width: 600px) {
  body {
    font-size: 0.95em;
    padding: 1em;
  }
  nav {
    flex-direction: column;
    align-items: flex-start;
  }
  h1 { font-size: 1.5em; }
  h2 { font-size: 1.2em; }
}