:root {
  --bg-color: #ffffff;
  --text-color: #333333;
  --link-color: #0056b3;
  --link-hover: #004494;
  --code-bg: #f8f9fa;
  --border-color: #e0e0e0;
  --sidebar-bg: #f8f9fa;
  --header-height: 60px;
  --font-body: 'Inter', 'Roboto', sans-serif;
  --font-code: 'Fira Code', 'Consolas', monospace;
  --ide-bg: #2d2d2d;
  --ide-fg: #f8f8f2;
}

/* Reset & Base */
* { box-sizing: border-box; }
body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  color: var(--text-color);
  background-color: var(--bg-color);
  line-height: 1.6;
}

a { color: var(--link-color); text-decoration: none; }
a:hover { text-decoration: underline; color: var(--link-hover); }

/* Typography */
h1, h2, h3, h4, h5, h6 { margin-top: 1.5em; margin-bottom: 0.5em; font-weight: 700; color: #111; }
h1 { font-size: 2.2rem; }
h2 { font-size: 1.8rem; border-bottom: 2px solid var(--border-color); padding-bottom: 0.3rem; }
h3 { font-size: 1.5rem; }

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Navbar */
.navbar {
  height: var(--header-height);
  background: white;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
}
.navbar-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}
.site-title { font-weight: 700; font-size: 1.25rem; color: #111; }
.nav-links a { margin-left: 1.5rem; font-weight: 500; color: #555; }
.nav-links a:hover { color: var(--link-color); }

/* Main Content */
.main-wrapper {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  padding: 2rem 0;
  min-height: calc(100vh - var(--header-height) - 100px); /* Adjust for footer */
}

.content-column {
  flex: 1 1 70%; /* Grow, shrink, basis */
  min-width: 0; /* Prevent overflow issues */
}

.sidebar-column {
  flex: 0 0 300px; /* Fixed width sidebar preferred, or generic 25% */
}

@media (max-width: 768px) {
  .main-wrapper { flex-direction: column; }
  .sidebar-column { flex: 1 1 auto; width: 100%; order: 2; } /* Sidebar to bottom */
  .content-column { order: 1; }
}

/* Post Styling */
.post-header { margin-bottom: 2rem; }
.post-meta { color: #666; font-size: 0.9rem; margin-bottom: 0.5rem; }
.post-tags { margin-bottom: 1rem; }
.post-tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  margin-right: 0.5rem;
  background-color: #e9ecef;
  color: #495057;
  border-radius: 20px;
  font-size: 0.8rem;
  text-decoration: none;
  font-weight: 500;
  transition: background-color 0.2s;
}
.post-tag:hover {
  background-color: #dee2e6;
  color: #212529;
  text-decoration: none;
}
.post-content p { margin-bottom: 1.25em; }
.post-content img {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  margin: 1rem 0;
  display: block; /* Prevents inline spacing issues */
}

/* Code Blocks (IDE Style) */
pre, .highlight {
  background-color: var(--ide-bg);
  color: var(--ide-fg);
  border-radius: 6px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  font-family: var(--font-code);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}
pre {
  padding: 1rem;
  overflow-x: auto;
}
/* When Rouge wraps pre in a div.highlight */
.highlight pre {
  margin: 0;
  box-shadow: none;
  background-color: transparent; /* Inherit from container */
}
code {
  font-family: var(--font-code);
  background-color: var(--code-bg);
  padding: 0.2em 0.4em;
  border-radius: 3px;
  font-size: 0.9em;
  color: #d63384; /* Highlight inline code distinct from block */
}
pre code {
  background-color: transparent;
  padding: 0;
  color: inherit;
  font-size: 100%;
}

/* Language Switcher */
.btn-lang-switch {
  display: inline-block;
  padding: 0.4rem 0.8rem;
  margin: 0.5rem 0;
  color: var(--link-color);
  border: 1px solid var(--link-color);
  background-color: transparent;
  border-radius: 4px;
  font-weight: 500;
  text-decoration: none;
  font-size: 0.9rem;
  transition: all 0.2s ease;
}
.btn-lang-switch:hover {
  background-color: var(--link-color);
  color: white;
  text-decoration: none;
}

/* Sidebar Components */
.sidebar-widget {
  margin-bottom: 2rem;
  padding: 1.5rem;
  background: var(--sidebar-bg);
  border-radius: 4px;
  border: 1px solid var(--border-color);
}
.sidebar-title {
  margin-top: 0;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: #555;
  border-bottom: 1px solid #ddd;
  padding-bottom: 0.5rem;
  margin-bottom: 1rem;
}
.ad-placeholder {
  width: 100%;
  height: 250px;
  background-color: #e9ecef;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #999;
  font-weight: bold;
  border: 1px dashed #ccc;
}

/* AdSense Placeholder in Content */
.content-ad-slot {
  margin: 2rem 0;
  padding: 1rem;
  background: #f8f9fa;
  border: 1px dashed #ccc;
  text-align: center;
  color: #777;
  font-size: 0.9rem;
  min-height: 120px; /* Reduce CLS by reserving space */
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

/* Footer */
.site-footer {
  background: #f1f1f1;
  padding: 2rem 0;
  text-align: center;
  color: #666;
  margin-top: auto;
  border-top: 1px solid var(--border-color);
}

/* Tag System */
.tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
  padding: 1.5rem;
  background-color: white;
  border-radius: 6px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.tag-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 1rem;
  background-color: #eef2f7;
  color: #0056b3;
  border-radius: 50px; /* Pill shape */
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: all 0.2s ease;
}

.tag-pill .count {
  margin-left: 0.5rem;
  font-size: 0.8em;
  opacity: 0.8;
}

.tag-pill:hover {
  background-color: #0056b3;
  color: white;
  text-decoration: none;
}

.tag-group {
  margin-bottom: 2.5rem;
  scroll-margin-top: 100px; /* Offset for sticky header */
}

.tag-header {
  border-bottom: 2px solid #eef2f7;
  padding-bottom: 0.5rem;
  color: #0056b3;
  margin-bottom: 1rem;
}

.sidebar-tags-container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.sidebar-tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  background-color: #eef2f7;
  color: #0056b3;
  border-radius: 15px; /* Pill shape */
  font-size: 0.85rem;
  text-decoration: none;
  transition: all 0.2s;
}

.sidebar-tag:hover {
  background-color: #0056b3;
  color: white;
  text-decoration: none;
}