:root {
  --max-width: 44rem;
  --width-wide: 64rem;
  --panel-width: 17rem;
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, monospace;

  color-scheme: dark;
  --bg: #0d1117;
  --surface: #161b22;
  --border: #2a313c;
  --fg: #e6edf3;
  --muted: #9198a1;
  --accent: #4493f8;
  --accent-hover: #6cb0ff;

  --radius: 0.5rem;
  --radius-sm: 0.35rem;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #ffffff;
  --surface: #f6f8fa;
  --border: #e4e7eb;
  --fg: #1f2328;
  --muted: #656d76;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--fg);
  background: var(--bg);
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: color-mix(in srgb, var(--accent) 25%, transparent); }

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease;
}
a:hover { color: var(--accent-hover); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

main {
  flex: 1;
  padding-block: 3rem;
}

body.layout-wide { --max-width: var(--width-wide); }

.site-header-inner,
.site-footer-inner { max-width: var(--width-wide); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  padding-block: 1rem;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}

.site-header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-title {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  color: var(--fg);
}
.site-title:hover { color: var(--accent); }

.theme-toggle {
  margin-left: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1;
  cursor: pointer;
}
.theme-toggle:hover { color: var(--fg); }
.theme-toggle .icon-moon,
:root[data-theme="light"] .theme-toggle .icon-sun { display: none; }
:root[data-theme="light"] .theme-toggle .icon-moon { display: block; }

.site-header nav {
  display: flex;
  gap: 1.25rem;
  font-size: 0.95rem;
}
.site-header nav a { color: var(--muted); }
.site-header nav a:hover { color: var(--fg); }

@media (min-width: 48rem) {
  /* Panel layout is full-bleed, so the header controls track the aside edge
     rather than the width-capped container. */
  body:has(main > .panel-grid) .site-header :is(nav, .theme-toggle) {
    position: absolute;
    inset-block: 0;
    align-items: center;
  }
  body:has(main > .panel-grid) .site-header .theme-toggle {
    margin-block: auto;
    right: 1.5rem;
  }
  body:has(main > .panel-grid) .site-header nav {
    right: calc(var(--panel-width) + 1.5rem);
  }
}

.nav-toggle { position: absolute; width: 1px; height: 1px; opacity: 0; }
.nav-burger { display: none; }

@media (max-width: 40rem) {
  .nav-burger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 2.25rem;
    height: 2.25rem;
    padding: 0.5rem;
    cursor: pointer;
    border-radius: var(--radius-sm);
  }
  .nav-burger span {
    display: block;
    height: 2px;
    width: 100%;
    background: var(--fg);
    border-radius: 2px;
    transition: transform 0.2s ease, opacity 0.2s ease;
  }

  .site-header nav {
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    width: 100%;
    padding-block: 0.5rem;
  }
  .site-header nav a { padding: 0.4rem 0; }

  .nav-toggle:checked ~ nav { display: flex; }
  .nav-toggle:focus-visible ~ .nav-burger { outline: 2px solid var(--accent); outline-offset: 2px; }

  .nav-toggle:checked ~ .nav-burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle:checked ~ .nav-burger span:nth-child(2) { opacity: 0; }
  .nav-toggle:checked ~ .nav-burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}

h1, h2, h3, h4 {
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 2.5rem 0 1rem;
}
h1 { font-size: 2.25rem; margin-top: 0; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.2rem; }

.body h1 { font-size: 1.55rem; }
.body h2 { font-size: 1.3rem; }
.body h3 { font-size: 1.1rem; }
.body h4 { font-size: 0.95rem; }

.body :is(h1, h2, h3, h4, h5, h6) { scroll-margin-top: 5rem; }

p, ul, ol { margin: 0 0 1.25rem; }

.body :is(ul, ol) { padding-left: 1.4rem; }
.body li { margin-bottom: 0.4rem; }
.body img { max-width: 100%; height: auto; border-radius: var(--radius); display: block; cursor: zoom-in; }

.lightbox {
  max-width: 92vw;
  max-height: 92vh;
  padding: 0;
  border: none;
  background: none;
  overflow: hidden;
  outline: none; /* showModal() focuses the dialog itself; nothing to keyboard-navigate inside */
}
.lightbox img {
  display: block;
  max-width: 92vw;
  max-height: 92vh;
  width: auto;
  height: auto;
  border-radius: var(--radius);
  cursor: zoom-out;
}
.lightbox::backdrop { background: rgb(0 0 0 / 0.75); }

/* @starting-style gives the opening frame something to animate from; the
   closing frame is held open by the .closing class until transitionend. */
.lightbox,
.lightbox::backdrop {
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.lightbox { transform: scale(0.96); }
.lightbox[open],
.lightbox[open]::backdrop { opacity: 1; }
.lightbox[open] { transform: scale(1); }

@starting-style {
  .lightbox[open],
  .lightbox[open]::backdrop { opacity: 0; }
  .lightbox[open] { transform: scale(0.96); }
}

.lightbox[open].closing,
.lightbox[open].closing::backdrop { opacity: 0; }
.lightbox[open].closing { transform: scale(0.96); }

@media (prefers-reduced-motion: reduce) {
  .lightbox,
  .lightbox::backdrop { transition-duration: 0.01ms; }
}

.body a { text-decoration: underline; text-underline-offset: 0.2em; text-decoration-thickness: 1px; }

.body blockquote {
  margin: 1.5rem 0;
  padding: 0.25rem 0 0.25rem 1.25rem;
  border-left: 3px solid var(--accent);
  color: var(--muted);
}

.body hr { border: none; border-top: 1px solid var(--border); margin: 2.5rem 0; }

.body table {
  display: block;          /* so a wide table scrolls instead of breaking the column */
  overflow-x: auto;
  width: fit-content;
  max-width: 100%;
  margin: 1.75rem 0;
  border-collapse: collapse;
  font-size: 0.92rem;
  line-height: 1.5;
}

.body :is(th, td) {
  padding: 0.55rem 0.85rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.body th {
  background: var(--surface);
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
  border-bottom: 2px solid var(--border);
}

.body tbody tr:last-child :is(th, td) { border-bottom: none; }
.body tbody tr:hover { background: var(--surface); }
.body td code { white-space: nowrap; }

time { color: var(--muted); font-size: 0.85rem; }

.hero { padding-block: 1rem 2.5rem; }
.hero h1 { font-size: 2.5rem; }
.hero p { font-size: 1.15rem; color: var(--muted); margin-bottom: 0; }

.panel-main > .recent + .recent { margin-top: 3rem; }
.panel-main > .recent > h2 {
  margin: 0 0 0.75rem;
  padding-bottom: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
}

main:has(> .panel-grid) {
  display: flex;
  flex-direction: column;
  max-width: none;
  padding: 0;
}

.panel-grid {
  flex: 1;
  display: flex;
  align-items: stretch;
}

.panel-main {
  flex: 1;
  min-width: 0;
  padding: 3rem clamp(1.25rem, 4vw, 3rem);
}
.panel-main > * { max-width: var(--max-width); margin-inline: auto; }

.panel-grid:not(:has(.panel-aside)) .panel-main { margin-right: var(--panel-width); }

.panel-aside {
  flex: 0 0 var(--panel-width);
  background: var(--surface);
  border-left: 1px solid var(--border);
  padding: 3rem 1.5rem;
}
.panel-aside-inner { position: sticky; top: 5rem; }

main:has(> .panel-grid) + .site-footer { margin-top: 0; }

.panel-aside .widget {
  background: none;
  border: none;
  border-radius: 0;
  padding: 0;
}
.panel-aside .widget + .widget {
  margin-top: 1.75rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--border);
}
.widget .tags { margin: 0; }
.widget .tags li a { background: var(--bg); }
.tag-count { color: var(--muted); font-size: 0.75em; }
.widget-title {
  margin: 0 0 0.9rem;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.profile-card { text-align: center; }
.profile-card .avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 0.75rem;
  display: block;
  background: var(--bg);
}
.profile-name { margin: 0 0 0.35rem; font-size: 1.05rem; }
.profile-bio { margin: 0; color: var(--muted); font-size: 0.9rem; line-height: 1.5; }
.socials {
  list-style: none;
  margin: 0.9rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.35rem 0.9rem;
  font-size: 0.85rem;
}
.socials a { color: var(--muted); }
.socials a:hover { color: var(--accent); }

@media (max-width: 48rem) {
  .panel-main { padding: 2rem 1.25rem; }
  .panel-main > * { max-width: none; }
  .panel-aside { display: none; }
  .panel-grid:not(:has(.panel-aside)) .panel-main { margin-right: 0; }
}

.post-list, .project-list, .term-list { list-style: none; padding: 0; margin-block: 0; }

.post-list li, .project-list li {
  padding-block: 1.25rem;
  border-bottom: 1px solid var(--border);
}
.post-list li:last-child, .project-list li:last-child { border-bottom: none; }

.post-list li > a,
.project-list li > a {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--fg);
  letter-spacing: -0.01em;
}
.post-list li > a:hover,
.project-list li > a:hover { color: var(--accent); }

.post-list time { display: block; margin-top: 0.2rem; }
.post-list p, .project-list p { margin: 0.4rem 0 0; color: var(--muted); }

.content-type {
  display: inline-block;
  margin-right: 0.5rem;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.term-list li { margin-bottom: 0.5rem; }

.tags { list-style: none; padding: 0; margin: 1rem 0 0; display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tags li a {
  display: inline-block;
  background: var(--surface);
  box-shadow: inset 0 0 0 1px var(--border);
  color: var(--muted);
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  font-size: 0.8rem;
  transition: box-shadow 0.15s ease, color 0.15s ease;
}
.tags li a:hover { color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }

.post header, .project header { margin-bottom: 2rem; }
.post header h1, .page h1, .project h1 { margin-bottom: 0.5rem; }
.body { margin-top: 1.5rem; }

.toc { font-size: 0.9rem; }
.toc::before {
  content: "In this post";
  display: block;
  margin-bottom: 0.85rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
}
.toc ul { list-style: none; margin: 0; padding: 0; }
.toc li + li { margin-top: 0.5rem; }
.toc a { color: var(--muted); }
.toc a:hover { color: var(--fg); }
.toc-h3 { padding-left: 1.1rem; }
.toc-h4 { padding-left: 2.2rem; }
.toc-h5 { padding-left: 3.3rem; }
.toc-h6 { padding-left: 4.4rem; }

code { font-family: var(--font-mono); font-size: 0.9em; }

:not(pre) > code {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.1rem 0.35rem;
  border-radius: var(--radius-sm);
}

pre {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 1rem 1.15rem;
  border-radius: var(--radius);
  overflow-x: auto;
  line-height: 1.5;
  font-size: 0.9rem;
}
pre code { background: none; border: none; padding: 0; }

.pagination {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.95rem;
}
.pagination span { color: var(--muted); }

.site-footer {
  border-top: 1px solid var(--border);
  padding-block: 2rem;
  margin-top: 2rem;
  color: var(--muted);
  font-size: 0.85rem;
}
.site-footer p { margin: 0; }

.not-found {
  text-align: center;
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.not-found-code {
  font-family: var(--font-mono);
  font-size: 4rem;
  font-weight: 700;
  line-height: 1;
  color: var(--accent);
  margin: 0;
}
.not-found h1 { margin: 0.5rem 0 1rem; }
.not-found p { color: var(--muted); }