:root {
  --text: #e6e6e6;
  --muted: #c8c8c8;
  --line: #2a2a2a;
  --bg: #0e0e10;
  --accent: #4ab8d6;
  --tag-bg: #1c1c1f;
}

* { box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  margin: 0;
  padding: 0 16px 48px;
  -webkit-text-size-adjust: 100%;
}

.container { max-width: 760px; margin: 0 auto; }

nav.section-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 -16px 32px;
  padding: 10px 16px;
  font-size: 0.9rem;
  background: rgba(14, 14, 16, 0.85);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line);
}
nav.section-nav .nav-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}
nav.section-nav a {
  color: #5fff5f;
  text-decoration: none;
  padding: 4px 14px;
  transition: color 0.15s;
}
nav.section-nav a:hover { color: var(--accent); }
nav.section-nav span.sep {
  color: #5fff5f;
  user-select: none;
}
nav.section-nav a.home-link {
  color: #5fff5f;
  padding: 4px 8px;
  white-space: nowrap;
}
nav.section-nav a.home-link:hover { text-decoration: underline; }

.tag {
  font-size: 0.75rem;
  background: var(--tag-bg);
  color: var(--muted);
  padding: 2px 8px;
  border-radius: 3px;
  white-space: nowrap;
}

/* News listing (news.html) */
section { margin-bottom: 40px; }
section h2 {
  font-size: 1.05rem;
  border-left: 3px solid var(--accent);
  padding-left: 10px;
  margin: 0 0 16px;
  color: #5fff5f;
  scroll-margin-top: 60px;
}
ul.entries { list-style: none; padding: 0; margin: 0; }
ul.entries > li {
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 110px auto 1fr;
  column-gap: 12px;
  align-items: baseline;
}
ul.entries > li:last-child { border-bottom: none; }
ul.entries .date {
  font-variant-numeric: tabular-nums;
  color: var(--muted);
  font-size: 0.85rem;
  white-space: nowrap;
}
ul.entries .tag { justify-self: start; }
.title { font-size: 0.95rem; line-height: 1.5; }
.title a {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s, color 0.15s;
}
.title a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.title a[target="_blank"]::after {
  content: " ↗";
  font-size: 0.75em;
  color: var(--muted);
  vertical-align: super;
}
.meta {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 2px;
}
.quote {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 4px;
}

/* Article pages */
article { line-height: 1.8; }
article header.article-header {
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}
.meta-row {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 10px;
  font-size: 0.85rem;
  color: var(--muted);
}
.meta-row .date { font-variant-numeric: tabular-nums; }
article h1.article-title {
  font-size: 1.4rem;
  line-height: 1.5;
  margin: 0;
  font-weight: 600;
}
section.article-section { margin-bottom: 32px; }
section.article-section h2 {
  font-size: 1.05rem;
  border-left: 3px solid var(--accent);
  padding-left: 10px;
  margin: 0 0 16px;
  color: #5fff5f;
}
ul.bullets { list-style: none; padding: 0; margin: 0; }
ul.bullets > li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 12px;
  font-size: 0.95rem;
}
ul.bullets > li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.7em;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}
ul.bullets ul { list-style: none; padding: 0; margin: 10px 0 0; }
ul.bullets ul > li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 8px;
  font-size: 0.9rem;
  color: var(--muted);
}
ul.bullets ul > li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.75em;
  width: 6px;
  height: 1px;
  background: var(--muted);
}
dl.info {
  margin: 0;
  display: grid;
  grid-template-columns: 130px 1fr;
  row-gap: 8px;
  column-gap: 12px;
  font-size: 0.95rem;
}
dl.info dt {
  color: var(--muted);
  font-size: 0.85rem;
  padding-top: 2px;
}
dl.info dd { margin: 0; }
ul.bullets + dl.info { margin-top: 16px; }
ul.bullets a,
dl.info a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s;
}
ul.bullets a:hover,
dl.info a:hover { border-bottom-color: var(--accent); }
a[target="_blank"]::after {
  content: " ↗";
  font-size: 0.75em;
  color: var(--muted);
  vertical-align: super;
}

@media (max-width: 600px) {
  ul.entries > li {
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
    column-gap: 10px;
    row-gap: 4px;
  }
  ul.entries .date {
    font-size: 0.8rem;
    grid-column: 1;
    grid-row: 1;
  }
  ul.entries .tag {
    grid-column: 2;
    grid-row: 1;
  }
  .title {
    grid-column: 1 / -1;
    grid-row: 2;
  }
  dl.info { grid-template-columns: 100px 1fr; }
  article h1.article-title { font-size: 1.2rem; }
  nav.section-nav { font-size: 0.8rem; }
  nav.section-nav a { padding: 4px 8px; }
  nav.section-nav a.home-link { padding: 4px 6px; }
}