/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: #fff; color: #111827; line-height: 1.6; min-height: 100vh;
  display: flex; flex-direction: column;
}
main { flex: 1; }
a { color: inherit; text-decoration: none; }

/* Navbar */
.navbar {
  position: sticky; top: 0; z-index: 50;
  border-bottom: 1px solid #e5e7eb;
  background: rgba(255,255,255,0.85); backdrop-filter: blur(8px);
}
.nav-container {
  max-width: 72rem; margin: 0 auto; padding: 0 1rem;
  display: flex; align-items: center; justify-content: space-between; height: 3.5rem;
}
.nav-brand { display: flex; align-items: center; gap: 0.5rem; font-weight: 700; font-size: 1.125rem; color: #111827; }
.nav-logo-img {
  width: 2rem; height: 2rem; border-radius: 0.5rem;
  object-fit: cover;
}
.nav-links { display: flex; align-items: center; gap: 0.25rem; }
.nav-links a {
  padding: 0.5rem 0.75rem; border-radius: 0.375rem; font-size: 0.875rem;
  font-weight: 500; color: #4b5563; transition: all 0.15s;
}
.nav-links a:hover { background: #f3f4f6; color: #111827; }
.nav-links a.active { color: #2563eb; background: #eff6ff; }

/* Container */
.container { max-width: 72rem; margin: 0 auto; padding: 3rem 1rem; }
.container-narrow { max-width: 48rem; margin: 0 auto; padding: 2.5rem 1rem; }
.container-wide { max-width: 56rem; margin: 0 auto; padding: 2.5rem 1rem; }

/* Typography */
h1 { font-size: 2.25rem; font-weight: 800; color: #111827; margin-bottom: 1rem; }
h2 { font-size: 1.5rem; font-weight: 700; color: #111827; margin: 2.5rem 0 1rem; padding-bottom: 0.5rem; border-bottom: 1px solid #f3f4f6; }
h3 { font-size: 1.25rem; font-weight: 600; color: #111827; margin: 1.5rem 0 0.75rem; }
p { margin-bottom: 1rem; color: #4b5563; line-height: 1.75; }
ul, ol { margin: 0 0 1rem 1.5rem; color: #4b5563; }
li { margin-bottom: 0.25rem; line-height: 1.75; }
hr { border: none; border-top: 1px solid #e5e7eb; margin: 2rem 0; }

/* Links */
.content a { color: #2563eb; text-decoration: underline; }
.content a:hover { color: #1d4ed8; }

/* Code */
code {
  background: #f3f4f6; padding: 0.125rem 0.375rem; border-radius: 0.25rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.875em; color: #374151;
}
pre {
  background: #111827; color: #f3f4f6; padding: 1rem; border-radius: 0.5rem;
  overflow-x: auto; margin-bottom: 1rem; font-size: 0.875rem; line-height: 1.6;
}
pre code { background: none; padding: 0; color: inherit; }

/* Tables */
table { width: 100%; border-collapse: collapse; margin-bottom: 1rem; font-size: 0.875rem; }
th, td { border: 1px solid #d1d5db; padding: 0.5rem 0.75rem; text-align: left; }
th { background: #f9fafb; font-weight: 600; color: #374151; }
td { color: #4b5563; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.625rem 1.25rem; border-radius: 0.5rem; font-size: 0.875rem;
  font-weight: 600; transition: all 0.15s; cursor: pointer; border: none;
}
.btn-primary { background: #2563eb; color: #fff; }
.btn-primary:hover { background: #1d4ed8; }
.btn-secondary { background: #fff; color: #374151; border: 1px solid #d1d5db; }
.btn-secondary:hover { background: #f9fafb; }

/* Hero */
.hero { text-align: center; padding: 4rem 1rem 3rem; }
.hero-logo-img {
  width: 4rem; height: 4rem; border-radius: 1rem;
  object-fit: cover;
  margin-bottom: 1.5rem; box-shadow: 0 10px 15px -3px rgba(37,99,235,0.3);
}
.hero-title { font-size: 3rem; font-weight: 800; color: #111827; margin-bottom: 1rem; }
.hero-desc { font-size: 1.25rem; color: #6b7280; max-width: 42rem; margin: 0 auto 2rem; }
.hero-actions { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; }

/* Latest Version Banner */
.latest-banner {
  background: #f8fafc; border: 1px solid #e2e8f0; border-radius: 1rem;
  padding: 1.5rem; margin-bottom: 3rem;
}
.latest-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1rem; flex-wrap: wrap; gap: 0.5rem; }
.latest-title { display: flex; align-items: center; gap: 0.75rem; }
.latest-title h2 { margin: 0; border: none; font-size: 1.25rem; }
.latest-meta { font-size: 0.875rem; color: #9ca3af; }
.latest-link { font-size: 0.875rem; font-weight: 500; color: #2563eb; }
.latest-link:hover { color: #1d4ed8; }

/* Version Card */
.version-card {
  border: 1px solid #e5e7eb; border-radius: 0.75rem; background: #fff;
  transition: box-shadow 0.2s; margin-bottom: 1rem; overflow: hidden;
}
.version-card:hover { box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1); }
.version-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.25rem 1.25rem 0.75rem;
}
.version-title { display: flex; align-items: center; gap: 0.75rem; }
.version-title h3 { margin: 0; font-size: 1.125rem; }
.badge {
  display: inline-block; padding: 0.125rem 0.625rem; border-radius: 9999px;
  font-size: 0.75rem; font-weight: 600;
}
.badge-latest { background: #dbeafe; color: #1d4ed8; }
.badge-prerelease { background: #fef3c7; color: #b45309; }
.version-date { font-size: 0.875rem; color: #9ca3af; }
.version-downloads { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; padding: 0 1.25rem 1.25rem; }
@media (max-width: 640px) { .version-downloads { grid-template-columns: 1fr; } }

/* Download Button */
.dl-btn {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.75rem 1rem; border-radius: 0.5rem; border: 1px solid #e5e7eb;
  background: #fff; transition: all 0.15s;
}
.dl-btn:hover { background: #f8fafc; }
.dl-btn.disabled { opacity: 0.5; pointer-events: none; background: #f9fafb; }
.dl-icon { width: 1.25rem; height: 1.25rem; color: #9ca3af; flex-shrink: 0; }
.dl-btn:hover .dl-icon { color: inherit; }
.dl-info { min-width: 0; flex: 1; }
.dl-label { font-size: 0.875rem; font-weight: 500; display: flex; align-items: center; gap: 0.5rem; }
.dl-size { font-size: 0.75rem; color: #9ca3af; }
.dl-filename { font-size: 0.75rem; color: #9ca3af; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.dl-arrow { width: 1rem; height: 1rem; color: #d1d5db; flex-shrink: 0; }
.dl-btn:hover .dl-arrow { color: inherit; }
.dl-btn.windows:hover { border-color: #0078D4; background: #eff6ff; color: #0078D4; }
.dl-btn.linux:hover { border-color: #E95420; background: #fff7ed; color: #E95420; }
.dl-btn.vsix:hover { border-color: #2563eb; background: #eff6ff; color: #2563eb; }

/* Changelog */
.changelog-wrap {
  max-height: 0; opacity: 0; overflow: hidden;
  transition: max-height 0.3s ease-out, opacity 0.2s ease-out;
}
.version-card:hover .changelog-wrap,
.version-card.expanded .changelog-wrap {
  max-height: 500px; opacity: 1;
}
.changelog-inner {
  border-top: 1px solid #f3f4f6; padding: 1rem 1.25rem; background: #fafafa;
}
.changelog-title {
  font-size: 0.75rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.05em; color: #9ca3af; margin-bottom: 0.75rem;
}
.changelog-item { display: flex; align-items: flex-start; gap: 0.5rem; margin-bottom: 0.5rem; }
.changelog-item:last-child { margin-bottom: 0; }
.cl-tag {
  display: inline-block; padding: 0.125rem 0.5rem; border-radius: 9999px;
  font-size: 0.75rem; font-weight: 500; border: 1px solid; white-space: nowrap;
  margin-top: 0.125rem;
}
.cl-tag-feature { background: #ecfdf5; color: #047857; border-color: #a7f3d0; }
.cl-tag-fix     { background: #eff6ff; color: #1d4ed8; border-color: #bfdbfe; }
.cl-tag-improve { background: #faf5ff; color: #7c3aed; border-color: #ddd6fe; }
.cl-tag-breaking{ background: #fef2f2; color: #b91c1c; border-color: #fecaca; }
.cl-tag-deprecate{background: #fffbeb; color: #b45309; border-color: #fde68a; }
.cl-text { font-size: 0.875rem; color: #374151; line-height: 1.5; }

/* Mobile toggle hint */
.mobile-hint {
  display: none; text-align: center; padding: 0.5rem 1.25rem;
  border-top: 1px solid #f3f4f6; font-size: 0.75rem; color: #9ca3af;
}
@media (max-width: 768px) {
  .mobile-hint { display: block; }
  .changelog-wrap { max-height: none; }
  .version-card:not(.expanded) .changelog-wrap { max-height: 0; opacity: 0; }
  .version-card.expanded .changelog-wrap { max-height: 500px; opacity: 1; }
}

/* Footer */
.footer { border-top: 1px solid #e5e7eb; background: #f9fafb; }
.footer-container {
  max-width: 72rem; margin: 0 auto; padding: 2rem 1rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  font-size: 0.875rem; color: #6b7280; flex-wrap: wrap;
}
.footer-links { display: flex; gap: 1rem; }
.footer-links a:hover { color: #111827; }

/* Doc list */
.doc-list { display: flex; flex-direction: column; gap: 1rem; }
.doc-card {
  display: flex; align-items: center; gap: 1rem;
  padding: 1.25rem; border-radius: 0.75rem; border: 1px solid #e5e7eb;
  background: #fff; transition: all 0.15s;
}
.doc-card:hover { box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1); border-color: #d1d5db; }
.doc-num {
  display: flex; align-items: center; justify-content: center;
  width: 2.5rem; height: 2.5rem; border-radius: 0.5rem;
  background: #eff6ff; color: #2563eb; font-weight: 700; font-size: 0.875rem;
  flex-shrink: 0;
}
.doc-info { flex: 1; min-width: 0; }
.doc-title { font-size: 1.125rem; font-weight: 600; color: #111827; }
.doc-card:hover .doc-title { color: #2563eb; }
.doc-desc { font-size: 0.875rem; color: #6b7280; margin-top: 0.25rem; }
.doc-arrow { width: 1.25rem; height: 1.25rem; color: #d1d5db; flex-shrink: 0; }
.doc-card:hover .doc-arrow { color: #2563eb; }

/* Pagination */
.pagination {
  display: flex; align-items: center; justify-content: space-between;
  border-top: 1px solid #e5e7eb; padding-top: 1.5rem; margin-top: 2rem;
}
.pag-link { display: flex; align-items: center; gap: 0.5rem; font-size: 0.875rem; color: #6b7280; transition: color 0.15s; }
.pag-link:hover { color: #111827; }
.pag-label { display: block; font-size: 0.75rem; color: #9ca3af; }
.pag-link:hover .pag-title { color: #2563eb; }

/* Breadcrumb */
.breadcrumb { margin-bottom: 1.5rem; }
.breadcrumb a { display: inline-flex; align-items: center; gap: 0.25rem; font-size: 0.875rem; color: #6b7280; transition: color 0.15s; }
.breadcrumb a:hover { color: #111827; }

/* Selection */
::selection { background: #dbeafe; color: #1e3a8a; }

/* Scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #d1d5db; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #9ca3af; }