/* ============================================================================
   VIXEL — catppuccin mocha · matklad-simple layout
   ========================================================================== */

:root {
  --bg:          #1e1e2e;
  --bg-raised:   #181825;
  --bg-inset:    #11111b;
  --ink:         #cdd6f4;
  --ink-dim:     #a6adc8;
  --ink-faint:   #6c7086;
  --line:        #313244;
  --line-strong: #45475a;
  --acc:         #a6e3a1;
  --acc-deep:    #3d5440;
  --warn:        #fab387;
  --info:        #89dceb;
  --err:         #f38ba8;
  --font-body:   "IBM Plex Serif", Georgia, serif;
  --font-disp:   "IBM Plex Sans Condensed", "Arial Narrow", sans-serif;
  --font-mono:   "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --measure:     68ch;
}

*, *::before, *::after { box-sizing: border-box; }

html { scrollbar-color: var(--line-strong) var(--bg); }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 20px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--acc); color: var(--bg); }

a {
  color: var(--acc);
  text-decoration: none;
}
a:hover { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; text-decoration-color: var(--acc-deep); }

/* NAV ---------------------------------------------------------------------- */

nav {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px 20px 0;
  display: flex;
  align-items: baseline;
  gap: 24px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 12px;
}

.nav-brand {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
}
.nav-brand:hover { color: var(--acc); text-decoration: none; }

.nav-links {
  display: flex;
  gap: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.nav-links a { color: var(--ink-dim); }
.nav-links a:hover { color: var(--ink); text-decoration: none; }
.nav-links a.active { color: var(--acc); }

/* MAIN --------------------------------------------------------------------- */

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

/* ABOUT --------------------------------------------------------------------- */

.about {
  margin: 0 0 44px;
  background: var(--bg-inset);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 18px 20px;
  font-family: var(--font-mono);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink-dim);
  text-align: left;
  white-space: pre-wrap;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.about-cm {
  color: var(--ink-faint);
  font-style: italic;
}

.about .about-label {
  color: var(--acc);
  font-weight: 700;
}

.about a {
  color: var(--ink);
}
.about a:hover { color: var(--acc); }

/* POST LIST ---------------------------------------------------------------- */

.post-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.post-list li {
  padding: 10px 0;
  border-bottom: 1px dotted var(--line);
  display: flex;
  gap: 16px;
  align-items: baseline;
}

.post-list li:last-child { border-bottom: 0; }

.post-date {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-faint);
  white-space: nowrap;
  flex-shrink: 0;
}

.post-list a {
  color: var(--ink);
  font-size: 17px;
}

.post-list a:hover { color: var(--acc); text-decoration: none; }

/* PROJECTS ----------------------------------------------------------------- */

.project-list {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.project-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-raised);
  overflow: hidden;
  transition: border-color 0.2s;
}
.project-card:hover { border-color: var(--line-strong); }

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px 0;
}

.project-name {
  font-family: var(--font-disp);
  font-weight: 700;
  font-size: 22px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 0;
  line-height: 1.2;
}
.project-name a { color: var(--ink); text-decoration: none; }
.project-name a:hover { color: var(--acc); }

.project-header-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.project-source {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
  text-decoration: none;
}
.project-source:hover { color: var(--acc); text-decoration: none; }

.project-timeline {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-faint);
  flex-shrink: 0;
}

.project-body {
  padding: 20px 24px;
}

.project-tagline {
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 14px;
  max-width: var(--measure);
  line-height: 1.5;
}

.project-card strong {
  color: var(--acc) !important;
  font-weight: 400 !important;
}

.project-desc {
  max-width: var(--measure);
  margin: 0 0 20px;
  font-size: 0.95em;
  color: var(--ink-faint);
  line-height: 1.7;
}

.project-section-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 10px;
  font-weight: 400;
}

.project-features {
  list-style: none;
  padding: 0;
  margin: 0;
  max-width: var(--measure);
}
.project-features li {
  position: relative;
  padding: 3px 0 3px 24px;
  font-size: 0.92em;
  color: var(--ink-dim);
}
.project-features li::before {
  content: "\2014";
  color: var(--acc);
  position: absolute;
  left: 0;
  font-size: 10px;
}

.project-stack {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
  padding: 12px 24px;
  border-top: 1px solid var(--line);
}

/* POST --------------------------------------------------------------------- */

.post-header { margin-bottom: 32px; }

.post-header h1 {
  font-family: var(--font-disp);
  font-weight: 700;
  font-size: 36px;
  line-height: 1.15;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  margin: 0 0 12px;
  color: var(--ink);
}

.post-meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-faint);
  letter-spacing: 0.06em;
}

.tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  border: 1px solid var(--line);
  padding: 1px 6px;
  margin-left: 4px;
}

/* MARKDOWN ----------------------------------------------------------------- */

.md > * + * { margin-top: 1.1em; }
.md p { max-width: var(--measure); }

.md h1, .md h2, .md h3 {
  font-family: var(--font-disp);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  line-height: 1.2;
  color: var(--ink);
  scroll-margin-top: 24px;
}

.md h1 a, .md h2 a, .md h3 a {
  color: inherit;
  text-decoration: none;
  border-bottom: 0;
}
.md h1 a:hover, .md h2 a:hover, .md h3 a:hover {
  background: none;
  color: var(--acc);
}
.md h1 a::after, .md h2 a::after, .md h3 a::after {
  content: " #";
  color: var(--acc);
  opacity: 0;
}
.md h1 a:hover::after, .md h2 a:hover::after, .md h3 a:hover::after {
  opacity: 1;
}

.md h1 {
  font-size: 24px;
  margin-top: 2em;
  padding-top: 14px;
  border-top: 3px double var(--line-strong);
}

.md h2 {
  font-size: 19px;
  margin-top: 1.9em;
}
.md h2::before {
  content: "\00a7\00a0";
  color: var(--acc);
}

.md h3 { font-size: 16px; }

.md a {
  border-bottom: 1px solid var(--acc-deep);
  color: var(--ink);
}
.md a:hover { background: var(--acc); color: var(--bg); text-decoration: none; border-bottom-color: var(--acc); }

.md code {
  font-family: var(--font-mono);
  font-size: 0.82em;
  background: var(--bg-raised);
  border: 1px solid var(--line);
  padding: 1px 5px;
  color: var(--warn);
  white-space: nowrap;
}

.md pre {
  border: 1px solid var(--line-strong);
  background: var(--bg-inset);
  margin: 1.8em 0;
  overflow-x: auto;
  padding: 16px;
}

.md ul, .md ol {
  list-style: none;
  padding: 0;
  max-width: var(--measure);
}

.md ul li, .md ol li {
  display: flex;
  gap: 12px;
  padding-block: 4px;
}

.md ul li::before {
  content: "\2014";
  color: var(--acc);
  flex-shrink: 0;
  font-size: 10px;
  padding-top: 7px;
}

.md ol li {
  counter-increment: list;
}
.md ol { counter-reset: list; }
.md ol li::before {
  content: counter(list) ".";
  color: var(--acc);
  font-family: var(--font-mono);
  font-size: 12px;
  flex-shrink: 0;
  padding-top: 6px;
  width: 24px;
}

.md blockquote {
  margin: 1.6em 0;
  border-left: 3px solid var(--acc);
  padding: 4px 0 4px 20px;
  font-style: italic;
  font-size: 1.06em;
  color: var(--ink);
  max-width: calc(var(--measure) - 23px);
}
.md blockquote p { max-width: none; }
.md blockquote p + p { margin-top: 0.7em; }

.md hr {
  border: 0;
  border-top: 3px double var(--line-strong);
  margin: 2.2em auto;
  width: 100%;
}

.md strong { color: var(--acc); font-weight: 400; }
.md em { color: var(--ink-dim); }
.md .accent { color: var(--acc); }

/* IMAGES ------------------------------------------------------------------- */

.md figure.img {
  margin: 2em auto;
  max-width: 100%;
}
.md figure.img img {
  display: block;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  margin: 0 auto;
}
.md figure.img figcaption {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-faint);
  text-align: center;
  margin-top: 8px;
  letter-spacing: 0.04em;
}

/* TABLES ------------------------------------------------------------------- */

.md table {
  width: 100%;
  max-width: var(--measure);
  border-collapse: collapse;
  margin: 1.6em 0;
  font-size: 0.95em;
}
.md thead th {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--acc);
  text-align: left;
  padding: 8px 12px;
  border-bottom: 2px solid var(--line-strong);
}
.md tbody td {
  padding: 7px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.md tbody tr:last-child td { border-bottom: 0; }
.md table code {
  font-size: 0.85em;
  white-space: nowrap;
}

/* SIDENOTES ---------------------------------------------------------------- */

.md .sidenote {
  display: inline;
  color: var(--ink-dim);
}
.md .sidenote .sn-marker {
  color: var(--acc);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.72em;
  vertical-align: super;
  line-height: 0;
  text-decoration: none;
  cursor: pointer;
  padding: 0 0.15em;
}
.md .sidenote .sn-body { display: none; } /* collapsed on mobile; opened as popup */
.md .sidenote .sn-close { display: none; } /* shown only inside the popup */

/* The number that prefixes a note (shown in the gutter on desktop and in the
   popup on mobile), matching the superscript number in the body text. */
.md .sidenote .sn-num {
  color: var(--acc);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85em;
  margin-right: 6px;
}

/* MOBILE / any narrow screen: the note collapses to a marker that opens a
   centred popup when tapped ("open it up as a pop up"). */
@media (max-width: 999px) {
  .md .sidenote.open .sn-body {
    display: block;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20rem;
    max-width: 82vw;
    max-height: 68vh;
    overflow: auto;
    padding: 20px 22px;
    background: var(--bg-raised);
    border: 1px solid var(--line-strong);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
    z-index: 60;
    font-size: 1em;
    line-height: 1.5;
    color: var(--ink);
  }
  .md .sidenote.open .sn-close {
    display: block;
    position: absolute;
    top: 8px;
    right: 12px;
    color: var(--ink-faint);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 13px;
  }
}

/* WIDE article layout: the article BODY fills ~70% of the page width and hugs
   the left. Margin notes are pulled out to the right into the remaining
   ~30% of the page, so they never overlap the body. */
@media (min-width: 1000px) {
  main.article {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 32px 16px 64px;
  }
  main.article article .md {
    box-sizing: border-box;
    width: 74vw;
    max-width: 1040px;
    padding-right: 3%;        /* small gap before the note gutter */
    margin-left: 0;
  }
  /* Every flow block stays within the body column. */
  main.article .md p,
  main.article .md li,
  main.article .md pre,
  main.article .md table,
  main.article .md figure.img {
    max-width: 100%;
  }
  /* The superscript number stays inline in the text where the note is
     referenced; only the note body floats out to the gutter on the right. */
  main.article .md .sidenote {
    display: inline;
  }
  main.article .md .sidenote .sn-body {
    display: block;
    float: right;
    clear: right;
    width: 28%;
    margin-right: -30%;
    margin-top: 0.3em;
    font-size: 0.95em;
    line-height: 1.55;
    color: var(--ink-dim);
    border-left: 1px solid var(--acc-deep);
    padding-left: 14px;
  }
  main.article .md .sidenote .sn-close { display: none; }
}

/* CODE BLOCKS -------------------------------------------------------------- */

.md pre {
  position: relative;
  max-width: 100%;
  overflow-x: auto;
}
.md pre code {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink);
  background: none;
  border: 0;
  padding: 0;
  white-space: pre;
}
.md code.hljs { background: transparent; }

/* RESPONSIVE --------------------------------------------------------------- */

@media (max-width: 720px) {
  body { font-size: 18px; }
  nav { flex-wrap: wrap; padding-top: 16px; }
  .nav-links { gap: 14px; }
  .post-header h1 { font-size: 28px; }
  .about { font-size: 13.5px; padding: 14px 16px; }
  .project-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 16px 16px 0;
  }
  .project-body { padding: 16px; }
}

@media print {
  :root {
    --bg: #fff;
    --ink: #111;
    --ink-dim: #333;
    --ink-faint: #777;
    --line: #bbb;
    --line-strong: #888;
    --acc: #000;
    --acc-deep: #555;
    --bg-raised: #fff;
    --bg-inset: #f5f5f5;
  }
  nav { display: none; }
  body { font-size: 11pt; }
}