/* Blauwdruk, a blueprint-style theme for Zola =). Perpetually work in progress, probably anyways. */

:root {
  color-scheme: light dark;

  --paper: light-dark(#f7f5ef, #0d1433);
  --ink: light-dark(#242c48, #dde2f4);
  --muted: light-dark(#5d6890, #97a2cc);
  --blue: light-dark(#0b1fd6, #8fa3ff);
  --blue-deep: light-dark(#051290, #c3cdff);
  --grey: light-dark(#6b6b6b, #9b9b9b);
  --grey-deep: light-dark(#3a3a3a, #cacaca);
}

:root[data-theme="light"] {
  color-scheme: light;
}

:root[data-theme="dark"] {
  color-scheme: dark;
}

:root {
  --line: color-mix(in srgb, var(--blue) 38%, transparent);
  --accent: color-mix(in srgb, var(--blue) 65%, var(--paper));
  --grid: color-mix(in srgb, var(--blue) 10%, transparent);
  --grid-major: color-mix(in srgb, var(--blue) 17%, transparent);
  --wash: color-mix(in srgb, var(--blue) 6%, var(--paper));

  --mono: ui-monospace, "Cascadia Mono", "JetBrains Mono", Menlo, Consolas,
    "Liberation Mono", monospace;
  --sans: system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --cell: 1.5rem;
  --cell-major: calc(var(--cell) * 5);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background-color: var(--paper);
  /* Graph paper in the page margin: a minor line every cell and a major line every five cells */
  background-image:
    linear-gradient(var(--grid-major) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-major) 1px, transparent 1px),
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size:
    var(--cell-major) var(--cell-major),
    var(--cell-major) var(--cell-major),
    var(--cell) var(--cell),
    var(--cell) var(--cell);
  /* A percentage offset is relative to (page width - tile width), so adding half a tile
     puts a vertical line exactly on the page center, where the sheet is centered too */
  background-position:
    calc(50% + var(--cell-major) / 2) 0,
    calc(50% + var(--cell-major) / 2) 0,
    calc(50% + var(--cell) / 2) 0,
    calc(50% + var(--cell) / 2) 0;
  font: 400 1rem/1.7 var(--sans);
  -webkit-text-size-adjust: 100%;
}

.sheet {
  position: relative;
  /* Whole cells on both sides of the center line, so the sheet edges land on grid lines */
  max-width: calc(var(--cell) * 34);
  margin: calc(var(--cell) * 3) auto;
  padding: clamp(1.25rem, 4.5vw, 3rem);
  background: var(--paper);
  border: 1px solid var(--line);
}

@media (max-width: 540px) {
  .sheet {
    margin-block: var(--cell);
  }
}

.sheet::before,
.sheet::after {
  content: "";
  position: absolute;
  width: 15px;
  height: 15px;
  background:
    linear-gradient(var(--blue), var(--blue)) center / 100% 1px no-repeat,
    linear-gradient(var(--blue), var(--blue)) center / 1px 100% no-repeat;
}

.sheet::before {
  top: -8px;
  left: -8px;
}

.sheet::after {
  bottom: -8px;
  right: -8px;
}

/* Links and focus */
a {
  color: var(--blue);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--blue-deep);
  text-decoration-thickness: 2px;
}

:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

::selection {
  background: var(--blue);
  color: var(--paper);
}

/* Header */
.titlebar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 0.75rem;
  border-bottom: 3px double var(--line);
  margin-bottom: 2.25rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.titlebar .site-name {
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
}

.titlebar .site-name:hover {
  color: var(--blue-deep);
}

.titlebar-start {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.titlebar nav {
  display: flex;
  gap: 1.25rem;
}

.theme-switch {
  --dot: 0.8rem;
  position: relative;
  flex: none;
  width: 2.5rem;
  aspect-ratio: 44 / 40;
  margin: -0.5rem 0;
  padding: 0;
  border: 0;
}

.theme-switch[hidden] {
  display: none;
}

.theme-switch svg {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.theme-switch .edge {
  stroke: var(--blue);
}

.theme-switch .construction {
  stroke: var(--line);
  stroke-dasharray: 2 2;
}

.theme-switch .glyph {
  color: color-mix(in srgb, var(--muted) 60%, var(--paper));
  transition: color 300ms ease;
}

.theme-switch .knockout {
  fill: var(--paper);
  stroke: none;
}

.theme-switch:has([value="system"]:checked) .glyph.system,
.theme-switch:has([value="light"]:checked) .glyph.light,
.theme-switch:has([value="dark"]:checked) .glyph.dark {
  color: var(--blue);
}

.theme-switch:has([value="system"]:hover) .glyph.system,
.theme-switch:has([value="light"]:hover) .glyph.light,
.theme-switch:has([value="dark"]:hover) .glyph.dark {
  color: var(--blue-deep);
}

.theme-switch .indicator {
  stroke: var(--accent);
  transition: translate 300ms ease-in-out;
}

.theme-switch:has([value="light"]:checked) .indicator {
  /* ugh, how would I do this without raw pixel values, in css? */
  translate: -15px 26px;
}

.theme-switch:has([value="dark"]:checked) .indicator {
  translate: 15px 26px;
}

.theme-switch input {
  appearance: none;
  position: absolute;
  left: calc(100% * var(--x) / 44 - var(--dot) / 2);
  top: calc(100% * var(--y) / 40 - var(--dot) / 2);
  width: var(--dot);
  height: var(--dot);
  margin: 0;
  border: 0;
  border-radius: 50%;
  background: none;
  cursor: pointer;
}

.theme-switch input[value="system"] {
  --x: 22;
  --y: 7;
}

.theme-switch input[value="light"] {
  --x: 7;
  --y: 33;
}

.theme-switch input[value="dark"] {
  --x: 37;
  --y: 33;
}

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

.titlebar nav a {
  text-decoration: none;
}

.titlebar nav a:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-title {
  font-family: var(--mono);
  font-size: clamp(1.25rem, 3.5vw, 1.6rem);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-wrap: balance;
  margin: 0 0 0.5rem;
}

/* Intro text on list pages. */
.intro {
  margin-bottom: 2.25rem;
}

/* The sheet index */
.sheet-index {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sheet-index li + li {
  margin-top: 0.7rem;
}

.sheet-index a {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  color: var(--ink);
  text-decoration: none;
}

.sheet-index .t {
  font-weight: 600;
}

.sheet-index a:hover .t {
  color: var(--blue-deep);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.sheet-index .leader {
  flex: 1 1 2rem;
  border-bottom: 1px dotted var(--line);
}

.sheet-index time,
.sheet-index .count {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* Post metadat */
.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.1rem;
  margin: 0 0 2.25rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--muted);
}

.meta .mark {
  color: var(--blue);
}

.meta .human {
  color: var(--muted);
}


/* Article body. */
.prose {
  overflow-wrap: break-word;
}

.prose > :first-child {
  margin-top: 0;
}

.prose > :last-child {
  margin-bottom: 0;
}

.prose h2,
.prose h3 {
  font-family: var(--mono);
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  text-wrap: balance;
  margin: 2.4rem 0 0.8rem;
}

.prose h2 {
  font-size: 0.95rem;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.35rem;
}

.prose h3 {
  font-size: 0.85rem;
  color: var(--muted);
}

.prose blockquote {
  margin: 1.5rem 0;
  padding: 0.2rem 0 0.2rem 1.1rem;
  border-left: 2px solid var(--blue);
  color: var(--muted);
}

.prose code {
  font-family: var(--mono);
  font-size: 0.875em;
  background: var(--wash);
  padding: 0.1em 0.35em;
  border-radius: 2px;
}

.prose pre {
  background: var(--wash);
  border: 1px solid var(--line);
  padding: 1rem 1.1rem;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.55;
}

.prose pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  font-size: inherit;
}

.prose table {
  border-collapse: collapse;
  width: 100%;
  margin: 1.5rem 0;
  font-size: 0.9rem;
  font-variant-numeric: tabular-nums;
}

.prose th {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-align: left;
}

.prose th,
.prose td {
  border: 1px solid var(--line);
  padding: 0.45rem 0.65rem;
}

.prose hr {
  border: 0;
  border-top: 1px dashed var(--line);
  margin: 2.5rem 0;
}

.prose img {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
}

.prose ul,
.prose ol {
  padding-left: 1.4rem;
}

.prose li + li {
  margin-top: 0.3rem;
}

/* Archive (compact list of posts grouped by year) */
.archive-year {
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  margin: 2.2rem 0 0.5rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--line);
}

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

.archive li {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  gap: 0.9rem;
  padding: 0.45rem 0;
  border-bottom: 1px dotted var(--line);
  font-size: 0.95rem;
}

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

.archive time {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.archive li > a {
  color: var(--ink);
  font-weight: 500;
  text-decoration: none;
}

.archive li > a:hover {
  color: var(--blue-deep);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.archive .tags {
  display: flex;
  gap: 0.6rem;
  font-family: var(--mono);
  font-size: 0.75rem;
}

.archive .tags a {
  text-decoration: none;
}

.archive .tags a:hover {
  text-decoration: underline;
}

@media (max-width: 540px) {
  .archive li {
    grid-template-columns: auto 1fr;
  }

  .archive .tags {
    grid-column: 2;
  }
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  margin-top: 1rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.pagination .page-no {
  color: var(--muted);
}

/* Footer */
.titleblock {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 3rem;
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.78rem;
}

.titleblock > div {
  padding: 0.55rem 0.8rem;
}

.titleblock > div + div {
  border-left: 1px solid var(--line);
}

.titleblock .label,
.specblock .label {
  display: block;
  font-size: 0.62rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.1rem;
}

@media (max-width: 480px) {
  .titleblock {
    grid-template-columns: 1fr;
  }

  .titleblock > div + div {
    border-left: 0;
    border-top: 1px solid var(--line);
  }
}


.masthead {
  margin: 0 0 2.25rem;
}

.masthead svg {
  display: block;
  width: 100%;
  height: auto;
  color: var(--blue);
}

.masthead .art {
  display: none;
}

.masthead:not(.js) .art:first-child {
  display: block;
}

.masthead.js .art.show {
  display: block;
}

.fig-caption {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: center;
  margin-top: 0.6rem;
}

.colophon {
  text-align: center;
  color: var(--blue);
  margin-top: 3rem;
}

.colophon svg {
  max-width: 100%;
  height: auto;
}

.colophon + .titleblock {
  margin-top: 0.9rem;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(13rem, 1fr));
  gap: 1.25rem;
}

.plot-card {
  display: block;
  border: 1px solid var(--line);
  padding: 0.75rem;
  color: var(--ink);
  text-decoration: none;
}

a.plot-card:hover {
  border-color: var(--blue);
}

.plot-card img,
.plot-card svg {
  display: block;
  width: 100%;
  height: auto;
}

.plot-card .plot-title {
  display: block;
  margin-top: 0.6rem;
  font-weight: 600;
  font-size: 0.9rem;
}

.plot-card .plot-meta {
  display: block;
  margin-top: 0.2rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.plot-figure {
  margin: 0 0 1.5rem;
  padding: 1rem;
  border: 1px solid var(--line);
}

.plot-figure img,
.plot-figure svg {
  display: block;
  width: 100%;
  height: auto;
}

.specblock {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
  margin-top: 1.75rem;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.78rem;
}

.specblock > div {
  padding: 0.55rem 0.8rem;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.svg {
  display: block;
  background: var(--blue);
  -webkit-mask: var(--shape) center / contain no-repeat;
  mask: var(--shape) center / contain no-repeat;
}

.clock {
  display: block;
  color: var(--blue);
  width: min(100%, 440px);
  aspect-ratio: 480 / 40;
  margin: clamp(2.4rem, 7vw, 3.6rem) auto;
}

.ridgeline {
  --shape: url("./img/ridgeline.svg");
  mask-mode: luminance;
  width: 100%;
  aspect-ratio: 560 / 160;
  margin: 0.9rem auto 0;
}

.projects-status {
  margin: 0 0 1.5rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.projects-status:empty {
  display: none;
}

.projects-heading,
.home-heading {
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  margin: 2.2rem 0 1rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--line);
}

.projects {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(max(min(100%, 18rem), calc((100% - var(--cell)) / 2)), 1fr));
  gap: var(--cell);
  list-style: none;
  margin: 0;
  padding: 0;
}

.project {
  display: flex;
  flex-direction: column;
  padding: 0.9rem 1rem;
  border: 1px solid var(--blue);
}

.project-name {
  font-family: var(--mono);
  font-weight: 700;
  overflow-wrap: anywhere;
}

.project-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.project-badge {
  flex: none;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
}

.project-badge::after {
  content: "";
  width: 1.4rem;
  height: 1.4rem;
  background: var(--blue);
  -webkit-mask: url("./img/heart.svg") center / contain no-repeat;
  mask: url("./img/heart.svg") center / contain no-repeat;
}

.project.featured .project-name {
  font-size: 1.05rem;
}

.project.featured .project-details {
  margin-top: auto;
}

.project-desc {
  margin: 0.4rem 0 0;
  font-size: 0.9rem;
  line-height: 1.55;
}

.project-desc:empty {
  display: none;
}

.project-details {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  margin: 0;
  padding-top: 0.9rem;
  font-family: var(--mono);
  font-size: 0.75rem;
}

.project-details[hidden] {
  display: none;
}

.project:not(.featured) {
  grid-column: 1 / -1;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.4rem 1.5rem;
  padding-block: 0.6rem;
}

.project:not(.featured) .project-desc {
  display: none;
}

.project:not(.featured) .project-details {
  gap: 1.5rem;
  padding-top: 0;
}

.project:not(.featured) .project-details > div {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
}

.projects-passive {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 10rem), 1fr));
  gap: 0.4rem var(--cell);
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--mono);
  font-size: 0.85rem;
}

.projects-passive a {
  overflow-wrap: anywhere;
}

.projects-passive.archived a {
  color: var(--grey);
}

.projects-passive.archived a:hover {
  color: var(--grey-deep);
}

.fun-icon {
  display: inline-block;
  width: 1.3em;
  height: 1.3em;
  margin-left: 0.3em;
  vertical-align: -0.3em;
  background: var(--blue);
  -webkit-mask: url("./img/die.svg") center / contain no-repeat;
  mask: url("./img/die.svg") center / contain no-repeat;
}

.project-details dt {
  font-size: 0.62rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
}

.project-details dd {
  margin: 0;
  font-variant-numeric: tabular-nums;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}