/* Site layout for the Northline project pages. Component styles live in the
   distributable stylesheet at /northline/1.4.2/northline.css. */

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  background: var(--nl-bg);
  border-bottom: 1px solid var(--nl-line);
}

.header-inner {
  min-height: 64px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--nl-ink);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.3px;
  text-decoration: none;
  margin-right: auto;
}

.brand:hover { text-decoration: none; }
.brand img { width: 28px; height: 28px; }

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

.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--nl-muted);
  font-size: 14px;
  text-decoration: none;
}

.site-nav a[aria-current="page"],
.site-nav a:hover {
  color: var(--nl-ink);
  text-decoration: none;
}

.nav-toggle,
.theme-toggle {
  display: none;
}

@media (max-width: 760px) {
  .nav-toggle,
  .theme-toggle {
    display: inline-flex;
  }
  .site-nav {
    display: none;
    order: 3;
    width: 100%;
    flex-direction: column;
    gap: 0;
    padding-bottom: 8px;
  }
  .site-nav.is-open { display: flex; }
  .site-nav a { border-top: 1px solid var(--nl-line); }
  .header-inner { flex-wrap: wrap; padding-top: 8px; }
}

main { padding: 48px 0 64px; }

.hero {
  display: grid;
  grid-template-columns: 1.25fr 0.9fr;
  gap: 48px;
  align-items: center;
  padding: 32px 0 56px;
}

.hero h1 { font-size: clamp(2rem, 4vw, 2.9rem); }
.hero p { color: var(--nl-muted); font-size: 1.05rem; }
.hero .actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }

.hero .panel {
  border: 1px solid var(--nl-line);
  border-radius: var(--nl-radius);
  overflow: hidden;
}

.panel__bar {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--nl-line);
  background: var(--nl-surface);
  color: var(--nl-muted);
  font-size: 12px;
}

.panel__body { padding: 18px 20px 22px; }

.quick-note { margin: 0; font-size: 14px; }

.page-head { padding: 20px 0 8px; }
.page-head h1 { margin-bottom: 0.35em; }
.page-head p { color: var(--nl-muted); font-size: 1.05rem; max-width: 720px; }

.article { max-width: 760px; }
.article p,
.article li { color: var(--nl-muted); }
.article li { margin-bottom: 6px; }
.article h2:first-child { margin-top: 0; }

.section { padding: 40px 0; border-top: 1px solid var(--nl-line); }
.section > h2 { margin-top: 0; }

.file-list {
  list-style: none;
  padding: 0;
  margin: 0;
  border: 1px solid var(--nl-line);
  border-radius: var(--nl-radius);
  overflow: hidden;
}

.file-list li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--nl-line);
}

.file-list li:last-child { border-bottom: 0; }
.file-list code { background: none; padding: 0; }
.file-list small { display: block; color: var(--nl-muted); margin-top: 2px; }

.toc { display: flex; gap: 8px 22px; flex-wrap: wrap; font-size: 14px; margin: 20px 0 0; }

.changelog { list-style: none; padding: 0; margin: 0; }
.changelog > li {
  padding: 22px 0;
  border-top: 1px solid var(--nl-line);
}
.changelog h3 { margin: 0 0 4px; }
.changelog time { color: var(--nl-muted); font-size: 13px; }
.changelog ul { margin: 10px 0 0; padding-left: 20px; }

.demo-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 18px;
  border: 1px solid var(--nl-line);
  border-radius: var(--nl-radius);
  margin-bottom: 16px;
}

.site-footer {
  border-top: 1px solid var(--nl-line);
  padding: 28px 0;
  font-size: 13px;
  color: var(--nl-muted);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.site-footer p { margin: 0; }
.site-footer nav { display: flex; gap: 16px; flex-wrap: wrap; }
.site-footer a { color: var(--nl-muted); }

.empty { padding: 80px 0 60px; max-width: 620px; }
.empty .actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 20px; }

@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; gap: 32px; padding: 16px 0 40px; }
  main { padding: 28px 0 48px; }
  .file-list li { flex-direction: column; gap: 4px; }
}