/* ── Reset & base ─────────────────────────────────────────────────────────── */

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

:root {
  --font-mono: 'IBM Plex Mono', monospace;
  --font-serif: 'IBM Plex Serif', serif;

  --color-bg: #f8f7f4;
  --color-surface: #ffffff;
  --color-text: #1a1a18;
  --color-text-muted: #6b6b68;
  --color-border: #e0ddd6;
  --color-accent-builder: #1a1a18;
  --color-accent-ernest: #8b0000;
  --color-accent-link: #1a3a8f;

  --col-sidebar-width: 260px;
  --col-center-width: 480px;
  --layout-gap: 2rem;
  --header-height: 56px;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-serif);
  line-height: 1.6;
}

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

a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
  display: block;
}

/* ── Site header ──────────────────────────────────────────────────────────── */

.site-header {
  height: var(--header-height);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header-inner {
  max-width: calc(var(--col-sidebar-width) * 2 + var(--col-center-width) + var(--layout-gap) * 4);
  margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-title {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-text);
  text-transform: lowercase;
}

.site-nav {
  display: flex;
  gap: 1.5rem;
}

.site-nav a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  letter-spacing: 0.03em;
}

.site-nav a:hover {
  color: var(--color-text);
  text-decoration: none;
}

/* ── Three-column layout ──────────────────────────────────────────────────── */

.site-main {
  max-width: calc(var(--col-sidebar-width) * 2 + var(--col-center-width) + var(--layout-gap) * 4);
  margin: 0 auto;
  padding: 2.5rem 2rem;
}

.three-col-layout {
  display: grid;
  grid-template-columns: var(--col-sidebar-width) var(--col-center-width) var(--col-sidebar-width);
  grid-template-areas: "left center right";
  gap: var(--layout-gap);
  align-items: start;
}

.col-left  { grid-area: left; }
.col-center { grid-area: center; }
.col-right { grid-area: right; }

/* ── Column labels ────────────────────────────────────────────────────────── */

.col-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding-bottom: 0.75rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.col-left .col-label {
  color: var(--color-accent-builder);
  border-bottom-color: var(--color-accent-builder);
}

.col-right .col-label {
  color: var(--color-accent-ernest);
  border-bottom-color: var(--color-accent-ernest);
}

/* ── Post cards (sidebars) ────────────────────────────────────────────────── */

.post-card {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-border);
}

.post-card:last-child {
  border-bottom: none;
}

.post-date {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
}

.post-card-title {
  font-size: 0.9rem;
  font-weight: 400;
  line-height: 1.4;
  margin-bottom: 0.35rem;
}

.post-card-title a {
  color: var(--color-text);
}

.post-card-title a:hover {
  color: var(--color-accent-link);
  text-decoration: none;
}

.post-card--ernest .post-card-title a:hover {
  color: var(--color-accent-ernest);
}

.post-card-excerpt {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ── Center column: author block ──────────────────────────────────────────── */

.author-block {
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
}

.author-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  margin-bottom: 1rem;
  object-fit: cover;
}

.author-name {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.author-bio {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 0.75rem;
}

.author-link {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* ── Center column: featured post ────────────────────────────────────────── */

.featured-post {
  /* empty on purpose — inherits from post-card styles below */
}

.featured-image {
  width: 100%;
  margin-bottom: 1.25rem;
}

.featured-title {
  font-size: 1.3rem;
  font-weight: 500;
  line-height: 1.3;
  margin-bottom: 0.75rem;
}

.featured-title a {
  color: var(--color-text);
}

.featured-excerpt {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: 1rem;
}

.read-more {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  color: var(--color-accent-link);
}

/* ── Site footer ──────────────────────────────────────────────────────────── */

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 1.5rem 2rem;
  text-align: center;
}

.copyright {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* ── Post page layout ─────────────────────────────────────────────────────── */

.post-main {
  padding: 3rem 2rem;
}

.post-layout {
  max-width: 680px;
  margin: 0 auto;
}

.post-tags {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.post-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: lowercase;
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  color: var(--color-text-muted);
}

.post-tag--builder {
  border-color: var(--color-accent-builder);
  color: var(--color-accent-builder);
}

.post-tag--ernest {
  border-color: var(--color-accent-ernest);
  color: var(--color-accent-ernest);
}

.post-title {
  font-size: 2rem;
  font-weight: 500;
  line-height: 1.2;
  margin-bottom: 0.75rem;
}

.post-meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
}

.post-meta-sep {
  margin: 0 0.4rem;
}

.post-feature-image {
  margin-bottom: 2.5rem;
}

.post-feature-image figcaption {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-align: center;
  margin-top: 0.5rem;
  font-style: italic;
}

/* ── Post content (Ghost renders this) ───────────────────────────────────── */

.gh-content {
  font-size: 1rem;
  line-height: 1.75;
}

.gh-content p {
  margin-bottom: 1.25rem;
}

.gh-content h2 {
  font-size: 1.35rem;
  font-weight: 500;
  margin: 2rem 0 0.75rem;
}

.gh-content h3 {
  font-size: 1.1rem;
  font-weight: 500;
  margin: 1.5rem 0 0.5rem;
}

.gh-content a {
  color: var(--color-accent-link);
  text-decoration: underline;
}

.gh-content img {
  max-width: 100%;
  margin: 1.5rem 0;
}

.gh-content blockquote {
  border-left: 3px solid var(--color-border);
  padding-left: 1.25rem;
  color: var(--color-text-muted);
  font-style: italic;
  margin: 1.5rem 0;
}

.gh-content code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-border);
  padding: 0.15em 0.35em;
  border-radius: 2px;
}

.gh-content pre {
  background: #1a1a18;
  color: #f8f7f4;
  padding: 1.25rem;
  overflow-x: auto;
  margin: 1.5rem 0;
  border-radius: 4px;
}

.gh-content pre code {
  background: none;
  padding: 0;
  color: inherit;
}

/* ── Post footer ──────────────────────────────────────────────────────────── */

.post-footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.post-tags-footer {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.post-tag-link {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: 2px;
}

.post-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.post-nav a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  max-width: 45%;
  line-height: 1.4;
}

.post-nav a:hover {
  color: var(--color-text);
  text-decoration: none;
}

/* ── Responsive ───────────────────────────────────────────────────────────── */

@media (max-width: 1100px) {
  .three-col-layout {
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
      "center center"
      "left right";
  }
}

@media (max-width: 680px) {
  .three-col-layout {
    grid-template-columns: 1fr;
    grid-template-areas:
      "center"
      "left"
      "right";
  }

  .post-title {
    font-size: 1.5rem;
  }
}

/* ── Ghost Koenig editor image widths (required) ──────────────────────────── */

.kg-width-wide {
  position: relative;
  width: 85vw;
  min-width: 100%;
  margin: 1.5rem calc(50% - 42.5vw);
}

.kg-width-full {
  position: relative;
  width: 100vw;
  min-width: 100%;
  margin: 1.5rem calc(50% - 50vw);
}

.kg-image {
  max-width: 100%;
  height: auto;
}

/* ── Column subtitle ──────────────────────────────────────────────────────── */

.col-subtitle {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  margin-top: -0.75rem;
  margin-bottom: 1.5rem;
}

/* ── Latest post in column ────────────────────────────────────────────────── */

.col-latest-post {
  margin-bottom: 1.5rem;
}

.col-latest-title {
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.4;
  margin: 0.35rem 0 0.75rem;
}

.col-latest-content {
  font-size: 0.875rem;
  line-height: 1.7;
}

.col-latest-content p {
  margin-bottom: 1rem;
}

/* ── Archive link ─────────────────────────────────────────────────────────── */

.col-archive-link {
  display: inline-block;
  margin-top: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.03em;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
  padding-top: 1rem;
  width: 100%;
}

.col-archive-link:hover {
  color: var(--color-accent-link);
  text-decoration: none;
}

.col-archive-link--ernest:hover {
  color: var(--color-accent-ernest);
}