/* ==========================================================================
   Learning Business Central — shared stylesheet
   Design language: VS Code "Dark+" editor chrome, since the content is
   about agentic AL development inside VS Code / GitHub Copilot.
   ========================================================================== */

:root {
  --bg-primary: #1e1e1e;
  --bg-secondary: #252526;
  --bg-tertiary: #2d2d30;
  --border: #3c3c3c;
  --text-primary: #d4d4d4;
  --text-secondary: #9aa0a6;
  --accent-blue: #569cd6;
  --accent-yellow: #dcdcaa;
  --accent-orange: #ce9178;
  --accent-green: #6a9955;

  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --radius: 6px;
  --max-width: 760px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-blue); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent-blue); outline-offset: 2px; }

img { max-width: 100%; border-radius: var(--radius); display: block; }

/* ---------- "Editor window" chrome used on every page ---------- */

.titlebar {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  padding: 10px 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.titlebar .dot { width: 11px; height: 11px; border-radius: 50%; }
.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }

.titlebar .path {
  margin-left: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
}

.tabbar {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  display: flex;
  overflow-x: auto;
}

.tab {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-secondary);
  padding: 10px 18px;
  border-right: 1px solid var(--border);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
}

.tab .ext { color: var(--accent-orange); }
.tab.active {
  color: var(--text-primary);
  background: var(--bg-primary);
  border-top: 2px solid var(--accent-blue);
}
.tab a { color: inherit; }
.tab a:hover { text-decoration: none; color: var(--text-primary); }

/* ---------- Layout ---------- */

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent-green);
  margin-bottom: 12px;
}
.eyebrow::before { content: "// "; color: var(--text-secondary); }

h1 {
  font-family: var(--font-mono);
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  line-height: 1.3;
  color: #fff;
  margin: 0 0 16px;
}

h2 {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  color: var(--accent-blue);
  margin: 40px 0 16px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

p { color: var(--text-primary); }
p + p { margin-top: 1em; }

.meta {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}
.meta span::after { content: "  •  "; color: var(--border); }
.meta span:last-child::after { content: ""; }

code {
  font-family: var(--font-mono);
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 0.9em;
  color: var(--accent-orange);
}

pre {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.9em;
}
pre code { border: none; background: none; padding: 0; color: var(--text-primary); }

ul, ol { padding-left: 22px; }
li { margin-bottom: 8px; }
li strong { color: var(--accent-yellow); }

figure { margin: 32px 0; }
figcaption {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 8px;
  text-align: center;
}

.video-embed {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  height: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  margin: 16px 0;
}
.video-embed iframe {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: 0;
}

.callout {
  background: var(--bg-tertiary);
  border-left: 3px solid var(--accent-blue);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 16px 20px;
  margin: 24px 0;
  color: var(--text-primary);
  font-size: 0.95em;
}

/* ---------- Post index (home) ---------- */

.post-list { list-style: none; padding: 0; margin: 24px 0; }
.post-card {
  display: block;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.post-card:hover { border-color: var(--accent-blue); text-decoration: none; transform: translateX(2px); }
.post-card .post-title { color: #fff; font-family: var(--font-mono); font-size: 1.05rem; margin: 0 0 6px; }
.post-card .post-date { font-family: var(--font-mono); font-size: 12px; color: var(--accent-green); margin: 0 0 8px; }
.post-card .post-excerpt { color: var(--text-secondary); font-size: 0.95em; margin: 0; }

/* ---------- Footer / status bar ---------- */

.statusbar {
  background: var(--accent-blue);
  color: #1e1e1e;
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 6px 20px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 6px;
}
.statusbar a { color: #1e1e1e; font-weight: 600; }

@media (max-width: 600px) {
  main { padding: 32px 16px 64px; }
  .statusbar { justify-content: center; text-align: center; }
}