/*
  Portfolio styles.
  Layout: one left-aligned column on a 72rem grid. Projects are stations on
  four colored lines, listed like a timetable. Each line has its own station
  shape, so color is never the only signal. Red marks the current page and the
  main action, and no line uses red.
*/
:root {
  --bg: #eef0f2;
  --tile: #e3e7ea;
  --ink: #1b1f23;
  --ink-2: #4d555e;
  --rule: #c8ced3;
  --signal: #d6001c;
  --on-signal: #ffffff;
  --maps: #1d63c9;
  --on-maps: #ffffff;
  --concepts: #eb9800;
  --on-concepts: #1b1f23;
  --apps: #17794a;
  --on-apps: #ffffff;
  --tools: #6b3fb5;
  --on-tools: #ffffff;
  --font: "Public Sans", "Helvetica Neue", Arial, system-ui, sans-serif;
  --gutter: clamp(1rem, 4vw, 2rem);
  --measure: 62ch;
  --rail: 2rem;
}

@media (min-width: 48rem) {
  :root {
    --rail: 2.75rem;
  }
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #111417;
    --tile: #1b2025;
    --ink: #eef0f2;
    --ink-2: #a5adb5;
    --rule: #2c333a;
    --signal: #ff4a57;
    --on-signal: #111417;
    --maps: #6aa6ff;
    --on-maps: #111417;
    --concepts: #ffc23d;
    --on-concepts: #111417;
    --apps: #45d08a;
    --on-apps: #111417;
    --tools: #b199ff;
    --on-tools: #111417;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #111417;
  --tile: #1b2025;
  --ink: #eef0f2;
  --ink-2: #a5adb5;
  --rule: #2c333a;
  --signal: #ff4a57;
  --on-signal: #111417;
  --maps: #6aa6ff;
  --on-maps: #111417;
  --concepts: #ffc23d;
  --on-concepts: #111417;
  --apps: #45d08a;
  --on-apps: #111417;
  --tools: #b199ff;
  --on-tools: #111417;
  color-scheme: dark;
}

[data-line="maps"] {
  --line: var(--maps);
  --on-line: var(--on-maps);
}

[data-line="concepts"] {
  --line: var(--concepts);
  --on-line: var(--on-concepts);
}

[data-line="apps"] {
  --line: var(--apps);
  --on-line: var(--on-apps);
}

[data-line="tools"] {
  --line: var(--tools);
  --on-line: var(--on-tools);
}

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

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

body {
  margin: 0;
  padding-inline: var(--gutter);
  background: var(--bg);
  color: var(--ink);
  font: 400 1rem/1.55 var(--font);
}

a {
  color: var(--ink);
}

a:focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: 3px;
  border-radius: 2px;
}

strong {
  font-weight: 600;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip {
  position: absolute;
  left: -999px;
  top: 0;
}

.skip:focus {
  left: var(--gutter);
  top: 1rem;
  z-index: 10;
  padding: 0.75rem 1rem;
  background: var(--ink);
  color: var(--bg);
}

.wrap {
  max-width: 72rem;
  margin-inline: auto;
}

/* Station shapes */
.st {
  flex: none;
  width: 1.25rem;
  height: 1.25rem;
  fill: var(--bg);
  stroke: var(--ink);
  stroke-width: 2.25;
  stroke-linejoin: round;
  overflow: visible;
}

/* Logo mark: a waterline with three pilings on a flat tile.
   Swap the tile color with --mark-bg / --mark-fg (e.g. var(--maps) / var(--on-maps)). */
.logo {
  flex: none;
  width: 2.25rem;
  height: 2.25rem;
  --mark-bg: var(--ink);
  --mark-fg: var(--bg);
}

.logo .tile {
  fill: var(--mark-bg);
}

.logo .glyph {
  fill: none;
  stroke: var(--mark-fg);
  stroke-width: 2.2;
  stroke-linecap: round;
}

/* Line badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 2.25rem;
  padding-inline: 0.875rem 1rem;
  border-radius: 999px;
  background: var(--line);
  color: var(--on-line);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
}

a.badge {
  min-height: 2.75rem;
  padding-inline: 1rem 1.125rem;
}

a.badge:hover {
  filter: brightness(0.94);
}

.badge .st {
  width: 1.125rem;
  height: 1.125rem;
  fill: none;
  stroke: var(--on-line);
}

.badge .count {
  font-weight: 400;
}

/* Header */
.top {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4rem;
  border-bottom: 1px solid var(--rule);
}

.mark {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  color: var(--ink);
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.nav {
  display: flex;
  align-items: stretch;
}

.nav a {
  display: inline-flex;
  align-items: center;
  padding-inline: 0.75rem;
  margin-bottom: -1px;
  border-bottom: 3px solid transparent;
  color: var(--ink);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
}

.nav a:hover {
  background: var(--tile);
}

.nav a[aria-current] {
  border-bottom-color: var(--signal);
}

/* Hero */
.hero {
  display: grid;
  gap: 1.5rem;
  padding-block: clamp(2.5rem, 8vw, 5.5rem) clamp(2rem, 5vw, 3.5rem);
}

.display {
  max-width: 20ch;
  margin: 0;
  font-size: clamp(2.25rem, 6.4vw, 4.5rem);
  font-weight: 300;
  line-height: 1.04;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

.display.sm {
  font-size: clamp(2rem, 5vw, 3.25rem);
  max-width: 24ch;
}

.lede {
  max-width: var(--measure);
  margin: 0;
  font-size: 1.25rem;
  line-height: 1.5;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1.5rem;
}

.page > .actions {
  margin: 1.5rem 0 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding-inline: 1.5rem;
  border-radius: 999px;
  background: var(--signal);
  color: var(--on-signal);
  font-weight: 600;
  text-decoration: none;
}

.btn:hover {
  filter: brightness(0.92);
}

/* Secondary button: outlined, with a small icon before the label */
.btn.ghost {
  gap: 0.5rem;
  padding-inline: 1.25rem;
  border: 1.5px solid var(--ink);
  background: transparent;
  color: var(--ink);
}

.btn.ghost:hover {
  background: var(--tile);
  filter: none;
}

.ico {
  flex: none;
  width: 1.25rem;
  height: 1.25rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.textlink {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  font-weight: 600;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

.lines {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* Sections */
.sec {
  padding-block: clamp(2rem, 5vw, 3.5rem);
}

.sec > h2,
.prose > h2 {
  margin: 0 0 1.25rem;
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.prose {
  margin-top: 2.5rem;
}

.prose > h2 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.prose > p {
  max-width: var(--measure);
  margin: 0 0 1rem;
}

/* Project board: each group is a line, each row a station */
.board-head {
  display: none;
}

.group {
  margin-bottom: 2.5rem;
}

.group:last-child {
  margin-bottom: 0;
}

.line-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 1rem;
  margin: 0;
  padding-block: 1rem 0.75rem;
  border-top: 4px solid var(--line);
  font-size: 1rem;
  font-weight: 400;
}

.line-note {
  color: var(--ink-2);
  font-size: 0.9375rem;
}

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

.row {
  position: relative;
  display: grid;
  grid-template-columns: var(--rail) minmax(0, 1fr) 1.25rem;
  grid-template-areas:
    "rail name chev"
    "rail made chev"
    "rail status chev";
  gap: 0.375rem 1rem;
  align-items: center;
  min-height: 4.5rem;
  padding-block: 1rem;
  border-top: 1px solid var(--rule);
  color: var(--ink);
  text-decoration: none;
}

.row::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: calc(var(--rail) / 2 - 3px);
  width: 6px;
  background: var(--line);
}

.board li:first-child .row::before {
  top: 50%;
}

.board li:last-child .row::before {
  bottom: 50%;
}

.board li:last-child .row {
  border-bottom: 1px solid var(--rule);
}

.row:hover {
  background: var(--tile);
  box-shadow: -0.5rem 0 0 var(--tile), 0.5rem 0 0 var(--tile);
}

.row:hover .st {
  fill: var(--tile);
}

.row:focus-visible {
  outline-offset: -3px;
}

.stn {
  grid-area: rail;
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
}

.name {
  grid-area: name;
  min-width: 0;
}

.name strong {
  display: block;
  font-size: 1.125rem;
  line-height: 1.3;
}

.blurb {
  display: block;
  max-width: var(--measure);
  margin-top: 0.125rem;
  color: var(--ink-2);
  font-size: 0.9375rem;
}

.made {
  grid-area: made;
  color: var(--ink-2);
  font-size: 0.9375rem;
}

.status {
  grid-area: status;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 1.75rem;
  padding-inline: 0.75rem;
  border: 1px solid var(--ink-2);
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 600;
  white-space: nowrap;
}

.chev {
  grid-area: chev;
  align-self: center;
  justify-self: end;
  width: 0.6rem;
  height: 0.6rem;
  margin-right: 0.3rem;
  border-top: 2px solid var(--ink);
  border-right: 2px solid var(--ink);
  transform: rotate(45deg);
}

@media (min-width: 48rem) {
  .board-head,
  .row {
    grid-template-columns: var(--rail) minmax(0, 1fr) 15rem 9.5rem 1.25rem;
    grid-template-areas: "rail name made status chev";
    gap: 0 1.5rem;
  }

  .board-head {
    display: grid;
    padding-block: 0.5rem;
    border-top: 1px solid var(--rule);
    color: var(--ink-2);
    font-size: 0.8125rem;
    font-weight: 600;
  }

  .board-head > span {
    font-size: 0.8125rem;
  }

  .hc {
    grid-area: chev;
  }

  .hr {
    grid-area: rail;
  }
}

/* Fact rows */
.facts {
  max-width: 48rem;
  margin: 0;
  border-top: 2px solid var(--ink);
}

.frow {
  display: grid;
  grid-template-columns: 9rem minmax(0, 1fr);
  gap: 1rem;
  padding-block: 0.75rem;
  border-bottom: 1px solid var(--rule);
}

.facts.plain .frow {
  grid-template-columns: 13rem minmax(0, 1fr);
}

.frow dt {
  color: var(--ink-2);
  font-size: 0.9375rem;
}

.frow dd {
  margin: 0;
}

@media (max-width: 40rem) {
  .frow,
  .facts.plain .frow {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.125rem;
  }
}

/* Draft marker for sections that are still being written */
.wip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
  margin: 0 0 1.5rem;
  color: var(--ink-2);
  font-size: 0.9375rem;
}

.pill.draft {
  border-style: dashed;
}

.about {
  display: grid;
  gap: 2rem;
}

.about p {
  max-width: var(--measure);
  margin: 0 0 1rem;
  font-size: 1.125rem;
}

@media (min-width: 48rem) {
  .about {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    gap: 4rem;
  }
}

/* Detail pages */
.page {
  padding-block: 1.5rem 3rem;
}

.page > .where {
  margin: 0.5rem 0 0;
}

.page > h1 {
  margin-top: 1rem;
}

.page > .lede {
  margin-top: 1.25rem;
}

.page > .facts {
  margin-top: 2rem;
  border-top: 4px solid var(--line);
}

.notice {
  max-width: 48rem;
  margin: 2rem 0 0;
  padding: 1rem 1.25rem;
  border: 1px solid var(--rule);
  background: var(--tile);
  font-size: 0.9375rem;
}

.pager {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin-top: 3.5rem;
  border-top: 2px solid var(--ink);
}

.pager a {
  display: block;
  min-height: 4.5rem;
  padding-block: 1rem;
  border-bottom: 1px solid var(--rule);
  color: var(--ink);
  text-decoration: none;
}

.pager a:hover {
  background: var(--tile);
}

.pager .dir {
  display: block;
  color: var(--ink-2);
  font-size: 0.8125rem;
  font-weight: 600;
}

.pager .to {
  display: block;
  font-size: 1.125rem;
  font-weight: 600;
}

@media (min-width: 48rem) {
  .pager {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 2rem;
  }

  .pager .next {
    text-align: right;
  }
}

/* Footer */
.foot {
  padding-block: 2rem 3rem;
  border-top: 1px solid var(--rule);
  color: var(--ink-2);
  font-size: 0.875rem;
}

.foot p {
  max-width: var(--measure);
  margin: 0 0 0.75rem;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }

  .row,
  .nav a,
  .pager a {
    transition: background-color 0.12s;
  }
}