/* Home page: an index of things made by hand and with AI, newest first.
 * Courier, black on white, like every page on the site since 2015.
 *
 * Each artifact has a stamp in the left column: a solid "by hand" or an
 * outlined "with AI". The two differ in fill and in words, not only in
 * colour, so they stay distinct for anyone, in either colour scheme. */

:root {
  color-scheme: light dark;
  --ink: #1d1d1d;
  --ink-2: #3b3b3b;
  --muted: #6b6b6b;
  --rule: #e4e4e4;
  --paper: #ffffff;
  --hand: #1d1d1d;
  --ai: #2b6390;
  --focus: #2b6390;
  --mono: "Courier New", Courier, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e8e6e1;
    --ink-2: #c8c5be;
    --muted: #9a978f;
    --rule: #2f2f2f;
    --paper: #141414;
    --hand: #e8e6e1;
    --ai: #7fb8e6;
    --focus: #7fb8e6;
  }
}

* {
  box-sizing: border-box;
}

body {
  max-width: 46rem;
  margin: 0 auto;
  padding: 4rem 1.25rem 2.5rem;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 1rem;
  line-height: 1.55;
  -webkit-text-size-adjust: 100%;
}

a {
  color: inherit;
}

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

/* Text for screen readers only. */
.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* ---- header ---- */

.site h1 {
  margin: 0 0 0.8rem;
  font-size: 1.9rem;
  font-weight: bold;
  line-height: 1.2;
  letter-spacing: 0.01em;
}

.tagline {
  margin: 0;
  color: var(--ink-2);
  line-height: 1.65;
}

/* One sentence to a line. */
.tagline span {
  display: block;
}

/* ---- the stamps ---- */

.stamp {
  display: inline-block;
  padding: 0.34em 0.5em 0.3em 0.64em;
  border: 1.5px solid currentColor;
  border-radius: 2px;
  font-size: 0.66rem;
  font-weight: bold;
  line-height: 1;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  white-space: nowrap;
}

.stamp.hand {
  border-color: var(--hand);
  background: var(--hand);
  color: var(--paper);
}

.stamp.ai {
  color: var(--ai);
}

.stamp.both {
  border-style: dashed;
  color: var(--hand);
}

/* ---- show: everything, by hand, with AI ---- */
/* Plain radio buttons and CSS; no script. */

.filter {
  margin: 2.4rem 0 0;
  padding: 0;
  border: 0;
  font-size: 0.8rem;
  color: var(--muted);
}

.filter legend {
  float: left;
  margin: 0 0.9rem 0 0;
  padding: 0.3rem 0;
  letter-spacing: 0.06em;
}

.filter input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
}

.filter label {
  display: inline-block;
  margin-right: 0.35rem;
  padding: 0.3rem 0.45rem 0.35rem;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  line-height: 1;
}

.filter label:hover {
  border-bottom-color: var(--rule);
}

.filter input:checked + label {
  border-bottom-color: var(--ink);
  color: var(--ink);
}

.filter input:focus-visible + label {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

body:has(#show-hand:checked) .artifact:not([data-by="hand"]):not([data-by="both"]),
body:has(#show-ai:checked) .artifact:not([data-by="ai"]):not([data-by="both"]),
body:has(#show-hand:checked) .year:not(:has([data-by="hand"], [data-by="both"])),
body:has(#show-ai:checked) .year:not(:has([data-by="ai"], [data-by="both"])) {
  display: none;
}

/* A browser that cannot do the filtering above simply shows everything. */
@supports not selector(:has(a)) {
  .filter {
    display: none;
  }
}

/* ---- the years ---- */

.year h2 {
  margin: 3.2rem 0 1.6rem;
  padding-left: 0.3em; /* balances the letter-spacing after the last digit */
  font-size: 0.78rem;
  font-weight: bold;
  letter-spacing: 0.3em;
  text-align: center;
  color: var(--muted);
}

.year h2::before {
  content: "\2014\00a0";
}

.year h2::after {
  content: "\00a0\2014";
}

/* ---- the artifacts ---- */

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

.artifact {
  display: grid;
  grid-template-columns: 5.25rem minmax(0, 1fr);
  column-gap: 1.5rem;
  margin: 0 0 2rem;
}

.gutter {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
  padding-top: 0.22rem;
}

.gutter time {
  padding-left: 0.1rem;
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  color: var(--muted);
}

.entry h3 {
  margin: 0;
  font-size: 1.08rem;
  font-weight: bold;
  line-height: 1.35;
}

.entry h3 a {
  text-decoration: none;
}

.entry h3 a:hover {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

.meta {
  margin: 0.25rem 0 0;
  font-size: 0.8rem;
  color: var(--muted);
}

.summary {
  max-width: 36rem;
  margin: 0.5rem 0 0;
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--ink-2);
}

/* ---- footer ---- */

footer {
  margin-top: 3.5rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--rule);
  font-size: 0.8rem;
  color: var(--muted);
}

footer p {
  margin: 0;
}

footer a {
  text-underline-offset: 0.18em;
}

/* ---- phones ---- */

@media (max-width: 600px) {
  body {
    padding-top: 2.5rem;
  }

  .site h1 {
    font-size: 1.6rem;
  }

  .filter legend {
    float: none;
    padding-bottom: 0.2rem;
  }

  .year h2 {
    margin: 2.6rem 0 1.4rem;
  }

  .artifact {
    grid-template-columns: minmax(0, 1fr);
    margin-bottom: 1.8rem;
  }

  .gutter {
    flex-direction: row;
    align-items: center;
    gap: 0.75rem;
    padding: 0 0 0.45rem;
  }
}