/* ── Token defaults ────────────────────────────────────────────────────────
   All values here are fallbacks. Theme files override via [data-theme="x"].
   Components reference only these tokens — never raw values.
   ───────────────────────────────────────────────────────────────────────── */
:root {
    --color-bg:              #ffffff;
    --color-surface:         #f5f5f5;
    --color-text:            #000000;
    --color-text-muted:      #555555;
    --color-text-subtle:     #888888;
    --color-border:          #cccccc;
    --color-border-strong:   #000000;
    --color-accent:          #000000;
    --color-accent-muted:    rgba(0, 0, 0, 0.1);
    --color-accent-fg:       #ffffff;
    --font-body:             Arial, Helvetica, sans-serif;
    --font-display:          Arial, Helvetica, sans-serif;
    --font-mono:             monospace;
    --gutter:                16px;
    --col-read:              680px;
    --nav-h:                 40px;

    /* Legacy aliases */
    --text-color:            var(--color-text);
    --background-color:      var(--color-bg);
    --accent-color:          var(--color-accent);
    --accent-fg:             var(--color-accent-fg);
}

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

body {
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-text);
    overflow-x: hidden;
}

/* Container utility */
.container {
    max-width: 960px;
    margin: 0 auto;
}

/* Site nav */
.site-nav {
    padding: 14px var(--gutter);
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 32px;
}

.site-nav .nav-links {
    display: flex;
    gap: 24px;
    list-style: none;
}

/* Content section */
.content-section {
    padding: 40px var(--gutter) 100px;
}

@media (max-width: 768px) {
    .site-nav {
        padding: 10px 20px;
        gap: 16px;
    }

    .site-nav .nav-links {
        gap: 18px;
    }

    .content-section {
        padding: 24px 20px 60px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}
/* Post list */
.post-list {
  list-style: none;
}

.post-list-item {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 0 24px;
  align-items: baseline;
  padding: 13px 0;
}

.post-item-meta {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-top: 5px;
  flex-wrap: wrap;
}

.post-item-excerpt {
  margin: 5px 0 0;
  max-width: 70ch;
}

/* Tags */
.post-tag {
  display: inline-block;
  margin-right: 4px;
}

/* Tag filter bar */
.tag-filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 24px;
  padding: 11px 16px;
}

.tag-filter-bar[hidden] {
  display: none;
}

.tag-filter-clear {
  margin-left: auto;
}

/* Post meta */
.post-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding-bottom: 20px;
}

.post-meta .post-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

/* Post content */
.post-content {
  display: flow-root;
}

.post-content h2,
.post-content h3,
.post-content h4 {
  margin-top: 1.8em;
  margin-bottom: 0.6em;
  line-height: 1.3;
}

.post-content p {
  margin-bottom: 1.2em;
}

.post-content img {
  max-width: 100%;
  height: auto;
  margin: 2em 0;
  display: block;
}

.post-content ul,
.post-content ol {
  padding-left: 1.5em;
  margin-top: 0.4em;
  margin-bottom: 1.2em;
  margin-left: 0;
}

.post-content li {
  margin-bottom: 0.4em;
}

.post-content blockquote {
  margin: 2.2em 0;
}

.post-content pre {
  padding: 20px;
  overflow-x: auto;
  margin: 1.5em 0;
}

.post-content hr {
  border: none;
  margin: 2em 0;
}

.youtube-embed {
  margin: 2em 0;
  overflow: hidden;
}

/* All posts button */
.all-posts-btn {
  display: inline-block;
  margin-top: 40px;
}

/* Post layout — reading column + sidebar */
.post-masthead + .content-section {
  padding-top: 64px;
}

.post-layout {
  display: grid;
  grid-template-columns: minmax(0, 72ch) 230px;
  gap: 0 56px;
  max-width: calc(72ch + 56px + 230px);
  margin: 0 auto;
  align-items: start;
}

.post-list-wrap {
  max-width: min(960px, 92vw);
  margin: 0 auto;
}

.post-title {
  margin-bottom: 20px;
  padding-top: 8px;
}

/* Image alignment */
img.rightalign {
  float: right !important;
  max-width: 50%;
  width: auto;
  height: auto;
  margin: 0 0 1em 1.5em !important;
  display: block;
}

img.leftalign {
  float: left !important;
  max-width: 50%;
  width: auto;
  height: auto;
  margin: 0 1.5em 1em 0 !important;
  display: block;
}

.post-content img.img-centre {
  display: block;
  float: none;
  margin: 1.5em auto;
  max-width: 65%;
}

/* Post navigation */
.post-nav {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 12px;
  align-items: stretch;
  margin-top: 48px;
  padding-top: 32px;
}

.post-nav .post-nav-item {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 14px 18px;
}

.post-nav-ghost {
  pointer-events: none;
}

.post-nav .post-nav-all {
  align-self: center;
  text-align: center;
  padding: 12px 20px;
  white-space: nowrap;
}

.post-nav .post-nav-direction {
  display: block;
  margin-bottom: 5px;
}

.post-nav .post-nav-title {
  line-height: 1.35;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.post-nav .post-nav-next {
  text-align: right;
}

/* Sidebar */
.post-sidebar {
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.sidebar-label {
  margin-bottom: 9px;
}

.sidebar-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.sidebar-tag {
  display: inline-block;
  padding: 3px 10px;
}

.sidebar-author {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sidebar-avatar {
  width: 75px;
  height: 75px;
  border-radius: 50%;
  object-fit: cover;
  display: block;
}

.sidebar-author-name {
  margin-bottom: 6px;
  line-height: 1.2;
}

.sidebar-social {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

@media (max-width: 900px) {
  .post-layout {
    grid-template-columns: 1fr;
    max-width: 72ch;
  }

  .post-sidebar {
    padding-top: 36px;
    margin-top: 52px;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 32px;
    align-items: flex-start;
  }

  .sidebar-block {
    flex: 1 1 180px;
  }

  .sidebar-block--date {
    display: none;
  }
}

@media (max-width: 768px) {
  .post-nav {
    grid-template-columns: 1fr;
  }

  .post-nav-ghost {
    display: none;
  }

  .post-nav .post-nav-next {
    text-align: left;
  }

  .post-nav .post-nav-all {
    text-align: left;
    padding: 12px 18px;
  }

  .post-list-item {
    grid-template-columns: 1fr;
    gap: 3px;
  }

  .post-list-item time {
    min-width: 0;
  }
}

@media (max-width: 560px) {
  .post-content img.rightalign,
  .post-content img.leftalign {
    float: none;
    width: 100%;
    max-width: 100%;
    margin: 1em 0;
  }

  .post-sidebar {
    flex-direction: column;
  }

  .sidebar-block {
    flex: none;
    width: 100%;
  }
}

/* Post masthead */
.post-masthead {
  padding: 24px var(--gutter) 52px;
}

.post-masthead-inner {
  max-width: calc(72ch + 56px + 230px);
  margin: 0 auto;
}

.post-masthead-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.post-masthead-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* Blog index masthead */
.index-masthead {
  padding: 24px var(--gutter) 52px;
}

/* CMS page header */
.page-header .site-nav {
  padding-left: 0;
  padding-right: 0;
}

.page-header {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: start;
  padding: 0 var(--gutter);
}

.page-header-left {
  padding-bottom: 52px;
}

.page-header-title {
  text-align: right;
  padding-top: 8px;
  padding-left: 32px;
  max-width: 55vw;
  word-break: break-word;
}

.page-content {
  max-width: 85ch;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

@media (max-width: 768px) {
  .page-header {
    grid-template-columns: 1fr;
  }

  .page-header-left {
    padding-bottom: 0;
  }

  .page-header-title {
    text-align: left;
    padding-left: 0;
    padding-top: 16px;
    padding-bottom: 40px;
    max-width: 100%;
  }
}

/* Tags box */
.tags-box {
  margin-top: 48px;
  padding: 20px 24px;
}

.tags-box .tag-filter-bar {
  margin-bottom: 16px;
}

/* Tag cloud */
.tags-section {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tag-chip {
  display: inline-block;
  padding: 3px 10px;
}

/* Footer */
.footer {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  text-align: left;
  padding: 52px var(--gutter);
}

.footer-left {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}

.footer-nav {
  display: flex;
  gap: 22px;
}

.footer-bottom-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.footer-rss {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.footer-signal {
  display: inline-flex;
  align-items: center;
}

.footer-rss-icon {
  width: 14px;
  height: 14px;
  fill: currentColor;
  flex-shrink: 0;
}

.footer-signal-icon {
  width: 22px;
  height: 22px;
  fill: currentColor;
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-right {
    align-items: flex-start;
  }
}

/* Post stats bar */
.post-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 24px 36px;
  margin: 32px 0;
  padding: 18px 0 16px;
}

.post-stat strong {
  display: block;
  line-height: 1;
}

.post-stat span {
  display: block;
  margin-top: 5px;
}

/* Threads grid */
.post-threads {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 32px 0;
}

.post-thread {
  padding-top: 14px;
}

.post-thread h4 {
  margin: 0 0 8px;
  line-height: 1.2;
}

.post-thread p {
  margin: 0;
}

@media (max-width: 600px) {
  .post-threads {
    grid-template-columns: 1fr;
  }
}

/* Timeline */
.tl {
  position: relative;
  margin: 32px 0;
  padding-top: 4px;
}

.tl::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 60px;
  width: 1px;
  content: '';
}

.tl-entry {
  display: grid;
  grid-template-columns: 48px 36px 1fr;
  min-height: 46px;
  align-items: start;
}

.tl-mark {
  position: relative;
  min-height: 46px;
}

.tl-mark::before {
  position: absolute;
  top: 10px;
  left: 18px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  transform: translateX(-50%);
  content: '';
}

.tl-copy {
  padding-bottom: 14px;
}

.tl-copy h3 {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px;
  margin: 0 0 3px;
  line-height: 1.2;
}

.tl-copy p {
  margin: 0;
}

.tl-copy p span {
  padding: 0 3px;
}

.tl-tag {
  display: inline-block;
  padding: 2px 6px;
  border-radius: 999px;
  line-height: 1;
  transform: translateY(-1px);
}

/* Post masthead reading time */
.post-masthead-readtime::before {
  content: '·';
  margin-right: 8px;
}

/* Prev/next navigation */
.post-prevnext {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 12px;
  margin-top: 52px;
}

.prevnext-item {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 16px 20px;
}

.prevnext-item.prevnext-next {
  text-align: right;
  align-items: flex-end;
}

.prevnext-item.prevnext-all {
  align-items: center;
  justify-content: center;
  min-width: 110px;
  justify-self: center;
}

.prevnext-placeholder {
  pointer-events: none;
}

.prevnext-title {
  max-width: 28ch;
}

@media (max-width: 600px) {
  .post-prevnext {
    grid-template-columns: 1fr;
  }

  .prevnext-item.prevnext-all {
    min-width: 0;
  }

  .prevnext-item.prevnext-next {
    text-align: left;
    align-items: flex-start;
  }
}

/* Related posts */
.related-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 0;
  padding: 0;
}