/* ============================================================
   Bob IBM i Blogs — Shared Stylesheet
   IBM Carbon Design System, Light Theme
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;600&family=IBM+Plex+Sans:ital,wght@0,400;0,600;0,700;1,400&display=swap');

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

/* ── IBM Design Language tokens ──────────────────────────── */
:root {
  --ibm-blue-60:    #0f62fe;
  --ibm-blue-70:    #0043ce;
  --ibm-blue-10:    #edf5ff;
  --ibm-gray-100:   #161616;
  --ibm-gray-70:    #525252;
  --ibm-gray-30:    #c6c6c6;
  --ibm-gray-20:    #e0e0e0;
  --ibm-gray-10:    #f4f4f4;
  --ibm-white:      #ffffff;
  --ibm-green-60:   #198038;
  --ibm-green-10:   #defbe6;
  --ibm-red-60:     #da1e28;
  --ibm-red-10:     #fff1f1;
  --ibm-yellow-30:  #f1c21b;
  --ibm-yellow-10:  #fdf6dd;

  --blue:        var(--ibm-blue-60);
  --blue-dark:   var(--ibm-blue-70);
  --green:       var(--ibm-green-60);
  --green-light: var(--ibm-green-10);
  --red:         var(--ibm-red-60);
  --red-light:   var(--ibm-red-10);
  --yellow:      var(--ibm-yellow-30);
  --yellow-bg:   var(--ibm-yellow-10);
  --gray-100:    var(--ibm-gray-10);
  --gray-200:    var(--ibm-gray-20);
  --gray-700:    var(--ibm-gray-70);
  --gray-900:    var(--ibm-gray-100);
  --white:       var(--ibm-white);
  --terminal-bg: #161616;

  --font-sans: 'IBM Plex Sans', 'Segoe UI', Arial, sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;
  --max-width: 860px;
  --radius:    4px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--gray-900);
  background: var(--white);
}

/* ── Site Header ──────────────────────────────────────────── */
.site-header {
  background: #0f62fe;
  color: var(--white);
  padding: 56px 24px 48px;
  text-align: center;
  border-bottom: 4px solid #0043ce;
}
.site-header .badge {
  display: inline-block;
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.35);
  border-radius: 2px;
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: 4px 12px;
  margin-bottom: 20px;
  font-family: var(--font-mono);
}
.site-header h1 {
  font-size: clamp(1.75rem, 4vw, 2.625rem);
  font-weight: 600;
  line-height: 1.2;
  max-width: 760px;
  margin: 0 auto 14px;
  letter-spacing: -.01em;
}
.site-header .subtitle {
  font-size: 1rem;
  opacity: .85;
  margin-bottom: 24px;
  font-weight: 400;
}
.site-header .meta {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  font-size: .875rem;
  opacity: .75;
}
.site-header .meta span::before { content: '· '; }
.site-header .meta span:first-child::before { content: ''; }

/* ── Bob avatar ───────────────────────────────────────────── */
.bob-avatar-wrap { display: flex; justify-content: center; margin-bottom: 20px; }
.bob-avatar-img {
  width: 110px;
  height: 110px;
  object-fit: contain;
  filter: drop-shadow(0 4px 16px rgba(0,0,0,.35));
}

/* ── Page layout ──────────────────────────────────────────── */
.page-wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px 80px;
}

/* ── Headings ─────────────────────────────────────────────── */
h2 {
  font-size: 2rem;
  font-weight: 600;
  color: var(--gray-900);
  margin: 56px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--gray-200);
  letter-spacing: -.01em;
}
h3 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--gray-900);
  margin: 32px 0 10px;
}
h4 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-900);
  margin: 24px 0 8px;
}
p { margin-bottom: 16px; font-size: 1rem; line-height: 1.6; }
a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-dark); text-decoration: underline; }
strong { font-weight: 600; }
ul, ol { padding-left: 24px; margin-bottom: 16px; }
li { margin-bottom: 4px; line-height: 1.6; }

/* ── Inline code ──────────────────────────────────────────── */
code {
  font-family: var(--font-mono);
  font-size: .875rem;
  background: var(--ibm-gray-10);
  color: var(--gray-900);
  padding: 1px 6px;
  border-radius: 2px;
  border: 1px solid var(--gray-200);
}

/* ── Code blocks ──────────────────────────────────────────── */
.code-block {
  margin: 24px 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid #393939;
  box-shadow: 0 2px 8px rgba(0,0,0,.15);
}
.code-block .code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #262626;
  padding: 8px 16px;
  border-bottom: 1px solid #393939;
}
.code-block .code-lang {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: #a8a8a8;
  text-transform: uppercase;
  letter-spacing: .1em;
}
.code-block .code-dots { display: flex; gap: 6px; }
.code-block .code-dots span { width: 11px; height: 11px; border-radius: 50%; }
.code-block .code-dots span:nth-child(1) { background: #ff5f56; }
.code-block .code-dots span:nth-child(2) { background: #ffbd2e; }
.code-block .code-dots span:nth-child(3) { background: #27c93f; }
.code-block pre {
  background: var(--terminal-bg);
  color: #f4f4f4;
  padding: 20px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: .875rem;
  line-height: 1.6;
  margin: 0;
}

/* ── Callouts ─────────────────────────────────────────────── */
.callout {
  border-radius: var(--radius);
  padding: 14px 18px;
  margin: 20px 0;
  font-size: .9375rem;
  line-height: 1.5;
}
.callout.info    { background: var(--ibm-blue-10);   border-left: 4px solid var(--blue); }
.callout.warn    { background: var(--ibm-yellow-10); border-left: 4px solid var(--yellow); }
.callout.success { background: var(--ibm-green-10);  border-left: 4px solid var(--green); }
.callout.error   { background: var(--ibm-red-10);    border-left: 4px solid var(--red); }
.callout strong  { display: block; margin-bottom: 4px; font-weight: 600; color: var(--gray-900); }

/* ── Tables ───────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; margin: 16px 0; }
table { width: 100%; border-collapse: collapse; font-size: .9375rem; }
thead tr { background: #0f62fe; color: var(--white); }
thead th { padding: 12px 16px; text-align: left; font-weight: 600; font-size: .875rem; letter-spacing: .01em; }
tbody tr { border-bottom: 1px solid var(--gray-200); }
tbody tr:nth-child(even) { background: var(--ibm-gray-10); }
tbody tr:hover { background: var(--ibm-blue-10); }
tbody td { padding: 12px 16px; font-size: .9375rem; vertical-align: top; }

/* ── Footer ───────────────────────────────────────────────── */
.site-footer {
  background: #161616;
  color: #a8a8a8;
  text-align: center;
  padding: 32px 24px;
  font-size: .875rem;
  font-family: var(--font-mono);
  border-top: 4px solid var(--blue);
}
.site-footer .tags span {
  display: inline-block;
  background: #262626;
  border: 1px solid #393939;
  border-radius: 2px;
  padding: 3px 10px; margin: 3px;
  font-size: .75rem; color: #a8a8a8;
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 600px) {
  .site-header { padding: 40px 16px 32px; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }
  .page-wrap { padding: 0 16px 60px; }
}