/* Reset & Base Typography */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: #121316;
  color: #d1d5db;
  font-family: Georgia, 'Times New Roman', Times, serif;
  font-size: 15px;
  line-height: 1.6;
  padding: 20px 10px;
}

/* Links */
a {
  color: #60a5fa;
  text-decoration: underline;
}

a:visited {
  color: #c084fc;
}

a:hover {
  color: #f87171;
}

/* Main Container */
#container {
  max-width: 980px;
  margin: 0 auto;
  background-color: #1a1c22;
  border: 1px solid #2d3139;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.45);
  padding: 25px 30px;
}

/* Header Banner */
header {
  border-bottom: 2px solid #3f444e;
  padding-bottom: 12px;
  margin-bottom: 25px;
}

header h1 {
  font-size: 26px;
  font-weight: bold;
  letter-spacing: -0.5px;
}

header h1 a {
  color: #f3f4f6;
  text-decoration: none;
}

header .subtitle {
  font-size: 13px;
  color: #9ca3af;
  font-style: italic;
  margin-top: 4px;
}

/* Layout Columns */
#layout {
  display: flex;
  flex-direction: row;
  gap: 30px;
}

/* Main Content Area */
main {
  flex: 1;
  min-width: 0;
}

/* Sidebar Navigation */
aside {
  width: 200px;
  flex-shrink: 0;
  font-family: 'Lucida Grande', Verdana, Geneva, sans-serif;
  font-size: 12px;
  line-height: 1.5;
  border-right: 1px solid #2d3139;
  padding-right: 15px;
}

aside section {
  margin-bottom: 20px;
}

aside h3 {
  font-size: 13px;
  font-weight: bold;
  color: #e5e7eb;
  border-bottom: 1px solid #374151;
  padding-bottom: 3px;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

aside ul {
  list-style-type: none;
}

aside li {
  margin-bottom: 4px;
}

aside a {
  color: #93c5fd;
  text-decoration: none;
}

aside a:visited {
  color: #d8b4fe;
}

aside a:hover {
  text-decoration: underline;
  color: #fca5a5;
}

/* Blog Post Styles */
.post {
  margin-bottom: 40px;
}

.post-title {
  font-size: 22px;
  font-weight: bold;
  margin-bottom: 4px;
  line-height: 1.25;
}

.post-title a {
  color: #93c5fd;
  text-decoration: none;
}

.post-title a:hover {
  text-decoration: underline;
}

.post-meta {
  font-family: 'Lucida Grande', Verdana, Geneva, sans-serif;
  font-size: 11px;
  color: #9ca3af;
  margin-bottom: 16px;
  border-bottom: 1px dotted #374151;
  padding-bottom: 4px;
}

.post-body p {
  margin-bottom: 14px;
}

.post-body h2 {
  font-size: 18px;
  color: #f3f4f6;
  margin: 22px 0 10px 0;
  border-bottom: 1px solid #374151;
  padding-bottom: 4px;
}

.post-body h3 {
  font-size: 15px;
  color: #e5e7eb;
  margin: 16px 0 8px 0;
}

/* Terminal & Code Blocks */
pre, code {
  font-family: 'Courier New', Courier, monospace;
  font-size: 13px;
}

p code {
  background-color: #262930;
  color: #38bdf8;
  padding: 2px 5px;
  border: 1px solid #374151;
  border-radius: 2px;
}

pre {
  background-color: #0d0e11;
  border: 1px solid #2d3139;
  border-left: 3px solid #38bdf8;
  color: #e2e8f0;
  padding: 12px;
  overflow-x: auto;
  margin: 16px 0;
  line-height: 1.45;
}

/* Diagrams & Visual Placeholders */
.figure {
  text-align: center;
  margin: 20px 0;
}

.figure .placeholder {
  background: #111317;
  border: 1px dashed #475569;
  color: #94a3b8;
  padding: 40px;
  font-family: 'Courier New', Courier, monospace;
  font-size: 13px;
}

.figure img {
  max-width: 100%;
  height: auto;
  border: 1px solid #374151;
}

.figure-caption {
  font-size: 12px;
  font-style: italic;
  color: #9ca3af;
  margin-top: 5px;
}

/* Footer */
footer {
  border-top: 1px solid #2d3139;
  margin-top: 30px;
  padding-top: 15px;
  font-family: 'Lucida Grande', Verdana, Geneva, sans-serif;
  font-size: 11px;
  color: #6b7280;
  text-align: center;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  #layout {
    flex-direction: column-reverse;
  }
  aside {
    width: 100%;
    border-right: none;
    border-top: 1px solid #2d3139;
    padding-top: 20px;
  }
}