:root {
  --bg: #ffffff;
  --fg: #000000;
  --muted: #5c5c5c;
  --rule: #000000;
  --faint: #e6e6e6;
  --code-bg: #f4f4f4;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Charter, "Bitstream Charter", Georgia, serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --sans-he: system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #000000;
  --fg: #ffffff;
  --muted: #a3a3a3;
  --rule: #ffffff;
  --faint: #262626;
  --code-bg: #0f0f0f;
  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #000000;
    --fg: #ffffff;
    --muted: #a3a3a3;
    --rule: #ffffff;
    --faint: #262626;
    --code-bg: #0f0f0f;
    color-scheme: dark;
  }
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--serif);
  font-size: 1.1875rem;
  line-height: 1.65;
  font-kerning: normal;
  text-rendering: optimizeLegibility;
}

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

.page {
  max-width: 42rem;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 3rem;
}

/* links */

a {
  color: inherit;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

a:hover {
  background: var(--fg);
  color: var(--bg);
  text-decoration: none;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--fg);
  outline-offset: 2px;
}

button.link {
  appearance: none;
  background: none;
  border: 0;
  padding: 0;
  margin: 0;
  color: inherit;
  font: inherit;
  cursor: pointer;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

button.link:hover {
  background: var(--fg);
  color: var(--bg);
  text-decoration: none;
}

.icon {
  width: 1em;
  height: 1em;
  flex: none;
  fill: currentColor;
}

/* header */

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  padding-bottom: 0.9rem;
  margin-bottom: 3rem;
  border-bottom: 3px solid var(--rule);
  font-family: var(--mono);
}

.site-title {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.theme-toggle {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.3em;
  border: 0;
  background: none;
  color: var(--fg);
  font-size: 0.95rem;
  cursor: pointer;
}

.theme-toggle:hover {
  background: var(--fg);
  color: var(--bg);
}

.theme-toggle .icon {
  display: none;
}

.theme-toggle[data-mode="auto"] .mode-auto,
.theme-toggle[data-mode="light"] .mode-light,
.theme-toggle[data-mode="dark"] .mode-dark {
  display: block;
}

.site-nav ul {
  display: flex;
  gap: 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.95rem;
}

.site-nav li + li {
  margin-top: 0;
}

.site-nav a {
  text-decoration: none;
  padding: 0.1em 0.3em;
}

.site-nav a[aria-current="page"] {
  background: var(--fg);
  color: var(--bg);
}

/* typography */

h1,
h2,
h3,
h4 {
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.01em;
}

h1 {
  font-size: 2.25rem;
  margin: 0 0 0.5rem;
}

.prose h2 {
  font-size: 1.5rem;
  margin: 2.5rem 0 0.75rem;
}

.prose h3 {
  font-size: 1.2rem;
  margin: 2rem 0 0.5rem;
}

.prose h4 {
  font-size: 1rem;
  margin: 1.5rem 0 0.5rem;
}

p,
ul,
ol,
pre,
blockquote,
table,
figure {
  margin: 0 0 1.25rem;
}

ul,
ol {
  padding-inline-start: 1.5rem;
}

li + li {
  margin-top: 0.25rem;
}

hr {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 2.5rem 0;
}

blockquote {
  margin-inline: 0;
  padding-inline-start: 1.25rem;
  border-inline-start: 3px solid var(--rule);
  font-style: italic;
}

img,
video {
  max-width: 100%;
  height: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95em;
}

th,
td {
  padding: 0.4rem 0.6rem;
  border-bottom: 1px solid var(--faint);
  text-align: start;
}

th {
  border-bottom: 2px solid var(--rule);
}

.meta {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--muted);
  letter-spacing: 0.01em;
}

.meta a {
  color: var(--fg);
}

/* code */

code,
kbd,
samp,
pre {
  font-family: var(--mono);
  font-size: 0.82em;
}

:not(pre) > code {
  padding: 0.1em 0.3em;
  background: var(--code-bg);
  border: 1px solid var(--faint);
  overflow-wrap: break-word;
}

pre {
  padding: 1rem 1.1rem;
  overflow-x: auto;
  line-height: 1.5;
  background: var(--code-bg);
  border: 1px solid var(--faint);
  border-inline-start: 3px solid var(--rule);
  direction: ltr;
  text-align: left;
}

pre code {
  font-size: inherit;
}

.highlight {
  margin-bottom: 1.25rem;
}

.highlight pre {
  margin: 0;
}

.highlight .c,
.highlight .ch,
.highlight .cm,
.highlight .c1,
.highlight .cs,
.highlight .cp,
.highlight .cpf {
  color: var(--muted);
  font-style: italic;
}

.highlight .k,
.highlight .kc,
.highlight .kd,
.highlight .kn,
.highlight .kp,
.highlight .kr,
.highlight .kt,
.highlight .nt,
.highlight .ow {
  font-weight: 700;
}

.highlight .nf,
.highlight .fm,
.highlight .nc,
.highlight .gh,
.highlight .gu {
  text-decoration: underline;
  text-decoration-color: var(--muted);
  text-underline-offset: 0.2em;
}

.highlight .s,
.highlight .sa,
.highlight .sb,
.highlight .sc,
.highlight .dl,
.highlight .sd,
.highlight .s2,
.highlight .se,
.highlight .sh,
.highlight .si,
.highlight .sx,
.highlight .sr,
.highlight .s1,
.highlight .ss {
  color: var(--muted);
}

.highlight .gd {
  text-decoration: line-through;
}

.highlight .gi {
  font-weight: 700;
}

.highlight .hll {
  display: block;
  background: var(--faint);
}

/* blog index */

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

.entry {
  margin: 0 0 3rem;
}

.entry + .entry {
  padding-top: 2.5rem;
  border-top: 1px solid var(--faint);
}

.entry-title {
  font-size: 1.6rem;
  margin: 0 0 0.25rem;
}

.entry-title a {
  text-decoration: none;
}

.entry .meta {
  margin: 0 0 1rem;
}

.entry .summary p:last-child {
  margin-bottom: 0.75rem;
}

.entry .more {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.85rem;
}

.pagination {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 0.9rem;
}

.empty {
  color: var(--muted);
}

/* articles */

.article > h1 {
  margin-bottom: 2rem;
}

.article > h1 + .meta {
  margin: -1.5rem 0 2.5rem;
}

.article .tags {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--faint);
}

.portrait {
  float: inline-end;
  width: 11rem;
  height: auto;
  margin: 0.4rem 0 1rem 1.5rem;
  filter: grayscale(1) contrast(1.05);
  border: 1px solid var(--rule);
}

.prose::after {
  content: "";
  display: table;
  clear: both;
}

[dir="rtl"] {
  font-family: var(--sans-he);
}

[dir="rtl"] .portrait {
  margin: 0.4rem 1.5rem 1rem 0;
}

/* tags and archives */

.tag-cloud,
.archive {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 2rem;
}

.archive li {
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: 1rem;
  align-items: baseline;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
}

.tag-cloud li + li {
  margin-top: 0;
}

/* heatmaps */

.profile {
  margin: 1.25rem 0;
}

.heatmap {
  margin: 1.75rem 0 2rem;
}

.profile figcaption {
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 700;
}

.heatmap figcaption {
  margin-bottom: 0.5rem;
}

.profile-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
}

.profile-link .icon {
  width: 1.1em;
  height: 1.1em;
}

.heatmap-subtitle {
  display: block;
  margin-top: 0.15rem;
  font-weight: 400;
  color: var(--muted);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.heatmap-scroll {
  overflow-x: auto;
  direction: ltr;
}

.heatmap-scroll svg {
  display: block;
  width: 100%;
  min-width: 560px;
  height: auto;
}

.heatmap text {
  fill: var(--muted);
  font-family: var(--mono);
  font-size: 9px;
}

.heatmap.github {
  --h0: #ebedf0;
  --h1: #9be9a8;
  --h2: #40c463;
  --h3: #30a14e;
  --h4: #216e39;
}

.heatmap.strava {
  --h0: #ebedf0;
  --h1: #ffd3bb;
  --h2: #fea578;
  --h3: #fd7a3d;
  --h4: #fc4c02;
}

:root[data-theme="dark"] .heatmap.github {
  --h0: #1a1a1a;
  --h1: #0e4429;
  --h2: #006d32;
  --h3: #26a641;
  --h4: #39d353;
}

:root[data-theme="dark"] .heatmap.strava {
  --h0: #1a1a1a;
  --h1: #4a1d07;
  --h2: #8a3207;
  --h3: #c94104;
  --h4: #fc4c02;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .heatmap.github {
    --h0: #1a1a1a;
    --h1: #0e4429;
    --h2: #006d32;
    --h3: #26a641;
    --h4: #39d353;
  }

  :root:not([data-theme="light"]) .heatmap.strava {
    --h0: #1a1a1a;
    --h1: #4a1d07;
    --h2: #8a3207;
    --h3: #c94104;
    --h4: #fc4c02;
  }
}

.heatmap .l0 {
  fill: var(--h0);
  background: var(--h0);
}

.heatmap .l1 {
  fill: var(--h1);
  background: var(--h1);
}

.heatmap .l2 {
  fill: var(--h2);
  background: var(--h2);
}

.heatmap .l3 {
  fill: var(--h3);
  background: var(--h3);
}

.heatmap .l4 {
  fill: var(--h4);
  background: var(--h4);
}


.heatmap.x {
  --h0: #ebedf0;
  --h1: #c8c8c8;
  --h2: #969696;
  --h3: #5c5c5c;
  --h4: #111111;
}

:root[data-theme="dark"] .heatmap.x {
  --h0: #1a1a1a;
  --h1: #3d3d3d;
  --h2: #6e6e6e;
  --h3: #a8a8a8;
  --h4: #f2f2f2;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .heatmap.x {
    --h0: #1a1a1a;
    --h1: #3d3d3d;
    --h2: #6e6e6e;
    --h3: #a8a8a8;
    --h4: #f2f2f2;
  }
}

.heatmap.garmin {
  --h0: #ebedf0;
  --h1: #ddd0fb;
  --h2: #b9a0f5;
  --h3: #8f66ea;
  --h4: #6633cc;
}

:root[data-theme="dark"] .heatmap.garmin {
  --h0: #1a1a1a;
  --h1: #2e1d57;
  --h2: #4c2f91;
  --h3: #7448d4;
  --h4: #a47cff;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .heatmap.garmin {
    --h0: #1a1a1a;
    --h1: #2e1d57;
    --h2: #4c2f91;
    --h3: #7448d4;
    --h4: #a47cff;
  }
}

.heatmap.linkedin {
  --h0: #ebedf0;
  --h1: #b6d4f2;
  --h2: #6fa6e0;
  --h3: #2f7fd0;
  --h4: #0a66c2;
}

:root[data-theme="dark"] .heatmap.linkedin {
  --h0: #1a1a1a;
  --h1: #0a2540;
  --h2: #0d3f73;
  --h3: #1060ad;
  --h4: #378fe9;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .heatmap.linkedin {
    --h0: #1a1a1a;
    --h1: #0a2540;
    --h2: #0d3f73;
    --h3: #1060ad;
    --h4: #378fe9;
  }
}

.heatmap rect {
  rx: 2px;
  cursor: default;
}

.heatmap.travel {
  --h0: #ebedf0;
}

:root[data-theme="dark"] .heatmap.travel {
  --h0: #1a1a1a;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .heatmap.travel {
    --h0: #1a1a1a;
  }
}

.heatmap image.flag {
  clip-path: inset(0 round 2px);
  pointer-events: none;
}

.heatmap rect.flag {
  fill: transparent;
  stroke: rgb(128 128 128 / 0.35);
  stroke-width: 0.5;
}

.heatmap rect.abroad {
  fill: var(--muted);
}

.legend.flags {
  flex-wrap: wrap;
  gap: 0.2rem 0.6rem;
}

.flag-key {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.flag-key img {
  border-radius: 2px;
  box-shadow: 0 0 0 0.5px rgb(128 128 128 / 0.5);
}

.heatmap rect:hover {
  stroke: var(--fg);
  stroke-width: 1;
}

.heatmap-tip {
  position: fixed;
  z-index: 10;
  pointer-events: none;
  padding: 0.45rem 0.65rem;
  background: var(--fg);
  color: var(--bg);
  font-family: var(--mono);
  font-size: 0.72rem;
  line-height: 1.55;
  white-space: pre;
}

.heatmap-tip[hidden] {
  display: none;
}

.heatmap-tip-title {
  font-weight: 700;
}

.heatmap-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.25rem 1rem;
  margin: 0.5rem 0 0;
}

.legend {
  display: inline-flex;
  align-items: center;
  gap: 3px;
}

.legend .l0 {
  margin-inline-start: 0.4em;
}

.legend .l4 {
  margin-inline-end: 0.4em;
}

.legend .cell {
  display: inline-block;
  width: 10px;
  height: 10px;
}

/* comments */

.comments {
  margin-top: 3rem;
}

/* footer */

.site-footer {
  margin-top: 4rem;
  padding-top: 1.25rem;
  border-top: 3px solid var(--rule);
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--muted);
}

.site-footer p {
  margin: 0 0 0.35rem;
}

.site-footer a,
.site-footer button.link {
  color: var(--fg);
}

.site-footer .page-actions {
  margin-bottom: 1rem;
}

@media (max-width: 540px) {
  body {
    font-size: 1.0625rem;
  }

  .page {
    padding-top: 1.5rem;
  }

  .site-header {
    margin-bottom: 2rem;
  }

  h1 {
    font-size: 1.85rem;
  }

  .entry-title {
    font-size: 1.35rem;
  }

  .portrait {
    width: 8rem;
  }

  .archive li {
    grid-template-columns: 1fr;
    gap: 0;
  }
}

@media print {
  .site-nav,
  .site-footer,
  .comments {
    display: none;
  }
}