/* Johnattan's Laboratory: layout and components. Values come from tokens.css. */

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

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

body {
  margin: 0;
  background: var(--c-surface);
  color: var(--c-text);
  font-family: var(--font-family-body);
  font-size: var(--font-size-body);
  line-height: var(--font-leading-body);
  text-rendering: optimizeLegibility;
}

img { display: block; max-width: 100%; height: auto; }

h1, h2, h3 {
  font-family: var(--font-family-display);
  font-weight: 750;
  line-height: var(--font-leading-snug);
  letter-spacing: -0.02em;
  text-wrap: balance;
  margin: 0;
}

p, li, dd { text-wrap: pretty; }

a { color: var(--c-link); text-decoration-thickness: 1.5px; text-underline-offset: 0.18em; }
a:hover { text-decoration-thickness: 3px; }

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

.skip {
  position: absolute; left: var(--space-4); top: -4rem; z-index: 10;
  background: var(--c-text); color: var(--c-surface);
  padding: var(--space-2) var(--space-4); font-weight: 700;
}
.skip:focus { top: var(--space-4); }

.wrap {
  width: min(100% - 2 * var(--layout-gutter), var(--layout-page));
  margin-inline: auto;
}

mark {
  background: linear-gradient(transparent 12%, var(--c-highlight) 12%, var(--c-highlight) 88%, transparent 88%);
  color: var(--c-highlight-text);
  padding: 0 0.15em;
  border-radius: 2px;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

/* ---------- Navigation ---------- */

.nav {
  border-bottom: var(--line-rule) solid var(--c-rule);
  background: var(--c-surface);
}
.nav .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-5); min-height: 4rem;
}
.wordmark {
  font-family: var(--font-family-display);
  font-weight: 800; font-size: 1.25rem; letter-spacing: -0.02em;
  color: var(--c-text); text-decoration: none;
}
.nav ul { display: flex; gap: clamp(var(--space-4), 3vw, var(--space-6)); list-style: none; margin: 0; padding: 0; }
.nav ul a { color: var(--c-text); text-decoration: none; font-weight: 600; font-size: var(--font-size-small); }
.nav ul a:hover, .nav ul a[aria-current="page"] { text-decoration: underline; text-decoration-thickness: 3px; text-decoration-color: var(--c-stamp); }

/* ---------- Hero: the secret lab ---------- */

.hero {
  position: relative;
  background: var(--c-lab-wall);
  overflow: hidden;
  isolation: isolate;
}
.hero__art {
  width: 100%;
  height: clamp(28rem, min(calc(100svh - 4rem), 66vw), 52rem);
  object-fit: cover;
  object-position: 40% 30%;
}
.poster {
  position: absolute;
  left: 29%;
  top: clamp(1.5rem, 7%, 5rem);
  width: clamp(19rem, 35vw, 33rem);
  padding: clamp(1.25rem, 2.2vw, 2rem);
  background: var(--c-paper);
  color: var(--c-ink);
  border: var(--line-outline) solid var(--c-ink);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-pinned);
  rotate: -1.5deg;
}
/* tape strips */
.poster::before, .poster::after {
  content: ""; position: absolute; top: -0.9rem;
  width: 4.5rem; height: 1.6rem;
  background: color-mix(in srgb, var(--c-highlight) 70%, transparent);
  border: 1.5px solid color-mix(in srgb, var(--c-ink) 35%, transparent);
}
.poster::before { left: 1.25rem; rotate: -6deg; }
.poster::after { right: 1.25rem; rotate: 5deg; }
.poster h1 {
  font-size: clamp(2.4rem, 1rem + 3.7vw, 4.4rem);
  font-weight: 800;
  line-height: var(--font-leading-tight);
  letter-spacing: -0.035em;
}
.poster p {
  margin: var(--space-4) 0 var(--space-5);
  font-size: var(--font-size-lead);
  line-height: 1.4;
  max-width: 26ch;
}
.button {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-family: var(--font-family-display); font-weight: 750; font-size: 1.0625rem;
  color: var(--c-paper); background: var(--c-ink);
  padding: 0.7em 1.15em;
  border: var(--line-outline) solid var(--c-ink);
  border-radius: var(--radius-sm);
  box-shadow: 4px 4px 0 var(--c-stamp);
  text-decoration: none;
  transition: translate var(--motion-quick) var(--motion-ease), box-shadow var(--motion-quick) var(--motion-ease);
}
.button:hover { translate: -1px -1px; box-shadow: 6px 6px 0 var(--c-stamp); text-decoration: none; }
.button:active { translate: 3px 3px; box-shadow: 1px 1px 0 var(--c-stamp); }

/* ---------- Stamps and tags ---------- */

.stamp {
  display: inline-block;
  font-family: var(--font-family-display);
  font-stretch: 75%;
  font-weight: 800;
  font-size: 1.5rem;
  line-height: 1;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--c-stamp);
  border: var(--line-stamp) solid currentColor;
  border-radius: var(--radius-sm);
  padding: 0.3em 0.5em 0.25em;
  rotate: -6deg;
  white-space: nowrap;
  opacity: 0.94;
}
.stamp--running { color: var(--c-heading-accent); }
.stamp--progress { color: var(--c-text-muted); rotate: 4deg; }
.stamp--big { font-size: clamp(1.75rem, 1rem + 2.2vw, 2.6rem); white-space: normal; text-align: center; line-height: 0.95; }
.stamp--big small { display: block; font-size: 0.58em; letter-spacing: 0.06em; }

.exp-no {
  font-family: var(--font-family-display);
  font-weight: 750; font-size: var(--font-size-small);
  font-variant-numeric: tabular-nums; letter-spacing: 0.04em;
  color: var(--c-stamp-text);
}
.tag {
  display: inline-block;
  font-family: var(--font-family-display); font-weight: 800;
  font-size: 1rem; letter-spacing: 0.06em;
  background: var(--c-orange); color: var(--c-ink);
  padding: 0.2em 0.6em; border-radius: var(--radius-sm);
}

/* ---------- Homepage: experiments ---------- */

.section { padding-block: clamp(var(--space-7), 7vw, var(--space-9)); }
.section h2 { font-size: var(--font-size-h2); }
.intro { margin: var(--space-3) 0 0; max-width: 44ch; color: var(--c-text-muted); font-size: var(--font-size-lead); line-height: 1.45; }

.experiments { list-style: none; margin: var(--space-7) 0 0; padding: 0; }
.experiment {
  display: grid;
  grid-template-columns: clamp(8rem, 15vw, 12.5rem) minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(var(--space-4), 3vw, var(--space-7));
  padding-block: var(--space-5);
  border-top: var(--line-rule) solid color-mix(in srgb, var(--c-rule) 35%, transparent);
  position: relative;
}
.experiment:first-child { border-top: 0; }
.experiment__machine { transition: rotate var(--motion-quick) var(--motion-ease), translate var(--motion-quick) var(--motion-ease); }
.experiment h3 { font-size: clamp(1.3rem, 1rem + 0.9vw, 1.65rem); margin-top: var(--space-1); max-width: 30ch; }
.experiment h3 a { color: inherit; text-decoration: none; }
.experiment h3 a::after { content: ""; position: absolute; inset: 0; } /* whole row clickable */
.experiment h3 a:hover { text-decoration: underline; text-decoration-color: var(--c-stamp); text-decoration-thickness: 3px; }
.experiment p { margin: var(--space-2) 0 0; color: var(--c-text-muted); max-width: 52ch; }
.experiment .soon { display: block; margin-top: var(--space-2); font-size: var(--font-size-note); color: var(--c-text-muted); }
.experiment:hover .experiment__machine { rotate: -3deg; translate: 0 -4px; }
.experiment .stamp { justify-self: end; margin-right: var(--space-2); }

/* ---------- Homepage: about ---------- */

.about { display: grid; grid-template-columns: minmax(0, 40rem) minmax(0, 1fr); gap: var(--space-7); align-items: start; border-top: var(--line-rule) solid var(--c-rule); }
.about p { margin: var(--space-4) 0 0; font-size: var(--font-size-lead); line-height: 1.5; }

.hand {
  font-family: var(--font-family-hand);
  font-size: 1.05rem; line-height: 1.35;
  color: var(--c-heading-accent);
  rotate: -2deg;
  max-width: 17rem;
}
.hand strong { font-weight: 400; background: var(--c-highlight); color: var(--c-ink); padding: 0 0.2em; }
.hand::after {
  content: ""; display: block; width: 5rem; height: 3px; margin-top: var(--space-2);
  background: var(--c-heading-accent); border-radius: 3px; rotate: -3deg;
}

/* ---------- Footer: lab wall strip ---------- */

.footer {
  background: var(--c-lab-wall) url("../assets/img/footer-lab.webp") left bottom / auto 100% no-repeat;
  color: var(--c-paper);
  min-height: 15rem;
  display: flex; align-items: center;
  margin-top: var(--space-8);
}
.footer .wrap { display: grid; justify-items: end; gap: var(--space-3); padding-block: var(--space-6); text-align: right; }
.footer .wordmark { color: var(--c-paper); font-size: 1.6rem; }
.footer ul { display: flex; gap: var(--space-5); list-style: none; margin: 0; padding: 0; }
.footer a { color: var(--c-paper); }
.footer small { font-size: var(--font-size-note); opacity: 0.85; }
.footer :focus-visible { outline-color: var(--c-lime); }

/* ---------- Experiment page ---------- */

.write-up {
  display: grid;
  grid-template-columns: minmax(0, var(--layout-measure)) minmax(11rem, 15rem) 10rem;
  column-gap: clamp(var(--space-5), 3vw, var(--space-7));
  padding-top: var(--space-6);
}
.write-up > * { grid-column: 1; }
.back { font-weight: 700; font-size: var(--font-size-small); text-decoration: none; color: var(--c-text); }
.back:hover { text-decoration: underline; }

.wu-head { grid-row: 1; padding-bottom: var(--space-6); }
.wu-head .tag { margin-top: var(--space-5); }
.wu-head h1 { font-size: clamp(2.1rem, 1.2rem + 2.6vw, 3.4rem); line-height: 1.05; letter-spacing: -0.03em; margin-top: var(--space-4); }
.dek { font-size: var(--font-size-lead); line-height: 1.45; margin: var(--space-4) 0 0; color: var(--c-text-muted); max-width: 38ch; }

.wu-machine {
  grid-column: 2 / 4; grid-row: 1;
  align-self: end; justify-self: end;
  position: relative; z-index: 2;
  width: min(100%, 22rem);
  margin-bottom: -2.5rem;
}
.wu-machine .stamp { position: absolute; left: -7.5rem; top: 0.5rem; background: var(--c-surface); }

.wu-section { padding-block: var(--space-6) var(--space-5); }
.tab {
  display: flex; align-items: end;
  border-bottom: var(--line-rule) solid var(--c-rule);
  margin-bottom: var(--space-5);
}
.tab h2 {
  font-size: var(--font-size-note) !important;
  font-weight: 800; letter-spacing: 0.14em; text-transform: uppercase; line-height: 1;
  background: var(--c-tab-bg); color: var(--c-tab-text);
  padding: 0.7em 1.15em 0.6em;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}
.wu-section p { margin: 0 0 var(--space-4); }
.wu-section .lead { font-size: var(--font-size-lead); line-height: 1.5; }

.apparatus { display: grid; grid-template-columns: max-content 1fr; gap: var(--space-3) var(--space-5); margin: 0; }
.apparatus dt { font-weight: 700; }
.apparatus dt::before { content: ""; display: inline-block; width: 0.7em; height: 0.7em; margin-right: 0.55em; border-radius: 50%; background: var(--c-highlight); border: 2px solid var(--c-ink); vertical-align: 0.02em; }
.apparatus dd { margin: 0; color: var(--c-text-muted); }

.procedure { list-style: none; counter-reset: step; margin: 0; padding: 0; display: grid; gap: var(--space-5); }
.procedure li { counter-increment: step; display: grid; grid-template-columns: 2.4rem 1fr; gap: var(--space-4); align-items: start; position: relative; }
.procedure li::before {
  content: counter(step);
  display: grid; place-items: center; width: 2.4rem; height: 2.4rem;
  font-family: var(--font-family-display); font-weight: 800; font-size: 1.1rem;
  background: var(--c-orange); color: var(--c-ink);
  border: var(--line-outline) solid var(--c-ink); border-radius: 50%;
}
.procedure li:not(:last-child)::after {
  content: ""; position: absolute; left: calc(1.2rem - 1px); top: 2.6rem; bottom: calc(-1 * var(--space-5) + 0.2rem);
  border-left: 2px dashed var(--c-text-muted);
}

.margin-note { grid-column: 2; align-self: start; margin-top: var(--space-8); }

/* Results spans the reading column and the margin */
.wu-results { grid-column: 1 / 3; }
.chart-title { font-size: var(--font-size-h3); margin-bottom: var(--space-2); }
.chart-sub { margin: 0 0 var(--space-4) !important; color: var(--c-text-muted); font-size: var(--font-size-small); }
.chart { position: relative; }
.chart svg { display: block; width: 100%; height: auto; overflow: visible; font-family: var(--font-family-body); }
.chart .axis text { fill: var(--c-text-muted); font-size: 13px; }
.chart .grid line { stroke: color-mix(in srgb, var(--c-rule) 14%, transparent); }
.chart .baseline { stroke: var(--c-rule); stroke-width: 1.5; }
.chart .series { fill: none; stroke-width: 3.5; stroke-linejoin: round; stroke-linecap: round; }
.chart .series--a { stroke: var(--c-series-a); }
.chart .series--b { stroke: var(--c-series-b); }
.chart .label { font-family: var(--font-family-display); font-weight: 750; font-size: 15px; }
.chart .label--a { fill: var(--c-series-a); }
.chart .label--b { fill: var(--c-series-b); }
.chart .cursor { stroke: var(--c-text); stroke-width: 1.5; stroke-dasharray: 4 4; }
.chart .dot { stroke: var(--c-surface); stroke-width: 3; }
.chart .dot--a { fill: var(--c-series-a); }
.chart .dot--b { fill: var(--c-series-b); }

.scrub { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: var(--space-4); margin-top: var(--space-4); }
.scrub label { font-weight: 700; font-size: var(--font-size-small); }
.scrub span { font-variant-numeric: tabular-nums; font-size: var(--font-size-small); color: var(--c-text-muted); }
.readout {
  margin-top: var(--space-4); padding: var(--space-4) var(--space-5);
  background: var(--c-surface-quiet); border-radius: var(--radius-md);
  font-variant-numeric: tabular-nums;
}
.readout strong { font-family: var(--font-family-display); }
.source { font-size: var(--font-size-note); color: var(--c-text-muted); margin-top: var(--space-4) !important; }

input[type="range"] {
  -webkit-appearance: none; appearance: none; width: 100%; height: 2.25rem; background: transparent; margin: 0;
}
input[type="range"]::-webkit-slider-runnable-track { height: 8px; background: var(--c-heading-accent); border-radius: 999px; }
input[type="range"]::-moz-range-track { height: 8px; background: var(--c-heading-accent); border-radius: 999px; }
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 26px; height: 26px; margin-top: -9px; border-radius: 50%;
  background: var(--c-highlight); border: var(--line-outline) solid var(--c-ink); cursor: grab;
}
input[type="range"]::-moz-range-thumb { width: 22px; height: 22px; border-radius: 50%; background: var(--c-highlight); border: var(--line-outline) solid var(--c-ink); cursor: grab; }

.notes { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-7); }
.notes h3 { font-size: var(--font-size-h3); margin-bottom: var(--space-3); }
.notes h3 mark { padding: 0 0.3em; }
.wu-notes { grid-column: 1 / 3; }

/* The pipe: runs down the rail from the header machine to the results machine */
.pipe {
  grid-column: 3; grid-row: 2 / 5;
  justify-self: center;
  width: 30px;
  margin-top: -0.5rem;
  background:
    repeating-linear-gradient(to bottom, transparent 0 230px, var(--c-orange) 230px 250px, var(--c-ink) 250px 253px, transparent 253px 480px),
    var(--c-steel);
  border-inline: var(--line-outline) solid var(--c-ink);
  position: relative;
}
.pipe::after { /* glass window with flowing liquid */
  content: ""; position: absolute; inset: 0 8px;
  background: repeating-linear-gradient(to bottom, var(--c-lime) 0 14px, transparent 14px 34px), var(--c-ink);
  background-size: 100% 34px;
  opacity: 0.9;
  -webkit-mask: repeating-linear-gradient(to bottom, #000 0 180px, transparent 180px 300px);
          mask: repeating-linear-gradient(to bottom, #000 0 180px, transparent 180px 300px);
}
.results-machine { grid-column: 3; grid-row: 5; align-self: start; justify-self: center; width: 10rem; margin-top: -0.25rem; }
.wu-results { grid-row: 5; }
.wu-notes { grid-row: 6; }
.r2 { grid-row: 2; } .r3 { grid-row: 3; } .r4 { grid-row: 4; }

/* ---------- Motion (only when the reader allows it) ---------- */

@media (prefers-reduced-motion: no-preference) {
  .hero__art { animation: settle var(--motion-slow) var(--motion-ease) both; }
  .poster { animation: pin 900ms var(--motion-ease) 250ms both; }
  .js [data-reveal] { opacity: 0; translate: 0 18px; transition: opacity 600ms var(--motion-ease), translate 600ms var(--motion-ease); }
  .js [data-reveal].is-in { opacity: 1; translate: 0 0; }
  .js .stamp[data-reveal] { scale: 1.35; opacity: 0; transition: scale 350ms cubic-bezier(.3,1.6,.5,1), opacity 200ms linear; }
  .js .stamp[data-reveal].is-in { scale: 1; opacity: 0.94; }
  .pipe::after { animation: flow 1.6s linear infinite; }
}
@keyframes settle { from { scale: 1.05; opacity: 0.4; } to { scale: 1; opacity: 1; } }
@keyframes pin { from { opacity: 0; translate: 0 -28px; rotate: 3deg; } to { opacity: 1; translate: 0 0; rotate: -1.5deg; } }
@keyframes flow { to { background-position: 0 34px; } }

/* ---------- Narrow screens ---------- */

@media (max-width: 1100px) {
  .write-up { grid-template-columns: minmax(0, 1fr); }
  .write-up > *, .wu-results, .wu-notes, .r2, .r3, .r4 { grid-column: 1; grid-row: auto; }
  .pipe, .results-machine { display: none; }
  .wu-machine { grid-row: auto; justify-self: start; width: min(100%, 19rem); margin: var(--space-2) 0 var(--space-4); }
  .wu-machine .stamp { left: auto; right: -5rem; top: 1rem; }
  .margin-note { grid-column: 1; margin: 0 0 var(--space-5) var(--space-2); }
}

@media (max-width: 760px) {
  .hero__art { height: auto; aspect-ratio: 4 / 3; object-position: 12% 50%; }
  .poster { position: relative; left: auto; top: auto; width: auto; margin: -3.5rem var(--layout-gutter) var(--space-6); rotate: -1deg; }
  .hero { padding-bottom: var(--space-2); }
  .experiment { grid-template-columns: 6.5rem minmax(0, 1fr); align-items: start; }
  .experiment .stamp { grid-column: 2; justify-self: start; font-size: 1.15rem; margin-top: var(--space-1); }
  .about { grid-template-columns: 1fr; gap: var(--space-5); }
  .notes { grid-template-columns: 1fr; gap: var(--space-5); }
  .wu-machine .stamp { right: -1rem; top: auto; bottom: 1rem; font-size: 1.4rem; }
  .scrub { grid-template-columns: 1fr; gap: var(--space-2); }
  .footer { background-size: auto 55%; align-items: start; min-height: 17rem; }
  .footer .wrap { justify-items: start; text-align: left; }
  .nav ul { gap: var(--space-4); }
}

/* Reading measure inside the wide results block */
.wu-results > p:not(.readout) { max-width: var(--layout-measure); }
/* the inlet sits at 62% of the machine's width; centre it under the pipe */
.results-machine { translate: -12.1% 0; }

/* Phone nav: keep the wordmark on one line */
.wordmark { white-space: nowrap; }
@media (max-width: 480px) {
  .nav .wordmark { font-size: 1.05rem; }
  .nav ul { gap: var(--space-3); }
  .nav ul a { font-size: 0.875rem; }
}


@media (max-width: 760px) {
  .apparatus { grid-template-columns: 1fr; gap: 0; }
  .apparatus dd { margin: 0 0 var(--space-3) 1.25em; }
  .wu-machine .stamp { right: -0.5rem; top: -0.5rem; bottom: auto; font-size: 1.25rem; }
}

/* Lab mark beside the wordmark */
.wordmark { display: inline-flex; align-items: center; gap: 0.5em; }
.wordmark .mark { width: auto; height: 1.6em; }
.footer .wordmark .mark { height: 1.4em; }

/* ================= Lab journal (v0.2) ================= */

/* Date stamps replace status stamps */
.stamp--date { text-align: center; line-height: 0.95; }
.stamp--date small { display: block; font-size: 0.55em; letter-spacing: 0.08em; margin-bottom: 0.15em; }
.experiment .stamp--date { font-size: 1.25rem; }

/* Topic tags */
.tags { display: flex; flex-wrap: wrap; gap: var(--space-2); list-style: none; margin: var(--space-3) 0 0; padding: 0; }
.tag-chip {
  font-family: var(--font-family-display); font-weight: 700; font-size: 0.8125rem; letter-spacing: 0.02em;
  padding: 0.2em 0.65em; border-radius: var(--radius-sm);
  background: var(--c-surface-quiet); color: var(--c-text);
  border: 1.5px solid color-mix(in srgb, var(--c-rule) 25%, transparent);
}

/* Links out to a project's own page or repo */
.out-links { display: flex; flex-wrap: wrap; gap: var(--space-4); margin: var(--space-3) 0 0 !important; position: relative; z-index: 1; }
.out-links a { font-weight: 700; font-size: var(--font-size-small); display: inline-flex; align-items: center; gap: 0.3em; }
.out-links svg { width: 0.95em; height: 0.95em; fill: currentColor; }

/* Topic filter */
.filter { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-6); }
.filter-chip {
  font: 700 0.875rem/1 var(--font-family-display); letter-spacing: 0.02em;
  padding: 0.6em 1em; border-radius: var(--radius-pill); cursor: pointer;
  color: var(--c-text); background: transparent;
  border: 2px solid var(--c-text);
  transition: background var(--motion-quick) var(--motion-ease), color var(--motion-quick) var(--motion-ease);
}
.filter-chip:hover { background: var(--c-surface-quiet); }
.filter-chip[aria-pressed="true"] { background: var(--c-text); color: var(--c-surface); }
.experiments { margin-top: var(--space-6); }
.experiment[hidden] { display: none; }

/* Lab notes log */
.log { list-style: none; margin: 0; padding: 0; }
.log-entry {
  display: grid; grid-template-columns: 7.5rem minmax(0, 1fr); gap: var(--space-5);
  padding-block: var(--space-4);
  border-top: var(--line-rule) solid color-mix(in srgb, var(--c-rule) 18%, transparent);
}
.log-entry:first-child { border-top: 0; }
.log-date {
  font-family: var(--font-family-display); font-weight: 750; font-size: var(--font-size-small);
  font-variant-numeric: tabular-nums; color: var(--c-stamp-text); padding-top: 0.15em;
}
.log-body p { margin: 0; max-width: var(--layout-measure); }
.log-exp { display: block; font-family: var(--font-family-display); font-weight: 700; font-size: var(--font-size-small); margin-bottom: var(--space-1); text-decoration: none; }
.log-exp:hover { text-decoration: underline; }
.log-month {
  font-family: var(--font-family-display); font-weight: 800; font-size: var(--font-size-note);
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--c-heading-accent);
  padding: var(--space-6) 0 var(--space-2); border-bottom: var(--line-rule) solid var(--c-rule);
}
.log-month:first-child { padding-top: 0; }
.log--full .log-month + .log-entry { border-top: 0; }

.latest { border-top: var(--line-rule) solid var(--c-rule); }
.latest__head { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-4); margin-bottom: var(--space-5); }
.more { font-weight: 700; }

/* Inner pages */
.page { padding-block: var(--space-7) var(--space-8); }
.page-head { margin-bottom: var(--space-6); }
.page-head h1 { font-size: var(--font-size-h1); line-height: 1.05; letter-spacing: -0.03em; }
.page-head .dek { max-width: 44ch; }

/* Equipment */
.gear-group { padding-block: var(--space-5) var(--space-6); }
.gear { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr)); gap: var(--space-5) var(--space-7); }
.gear-item { border-top: 3px solid var(--c-text); padding-top: var(--space-3); scroll-margin-top: var(--space-6); }
.gear-item:target { border-top-color: var(--c-stamp); }
.gear-item h3 { font-size: 1.2rem; }
.gear-item h3 a { color: var(--c-text); text-decoration-color: var(--c-stamp); }
.gear-item p { margin: var(--space-2) 0 0; }
.gear-maker { font-size: var(--font-size-note); color: var(--c-text-muted); margin-top: var(--space-1) !important; }
.gear-used { font-size: var(--font-size-small); color: var(--c-text-muted); }
.gear-used a { font-weight: 600; }

/* Equipment list on an experiment page */
.gear-list { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-3); }
.gear-list li { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0 var(--space-3); }
.gear-list li::before { content: ""; width: 0.7em; height: 0.7em; border-radius: 50%; background: var(--c-highlight); border: 2px solid var(--c-ink); flex: none; translate: 0 0.05em; }
.gear-list a { text-decoration-color: color-mix(in srgb, var(--c-link) 40%, transparent); }
.gear-list span { color: var(--c-text-muted); font-size: var(--font-size-small); }

/* Experiment page rows (each section and its margin note share a row) */
.wu-row { grid-column: 1 / 3; display: grid; grid-template-columns: subgrid; align-items: start; }
.wu-row > .wu-section { grid-column: 1; }
.wu-row > .margin-note { grid-column: 2; }
.wu-row--wide > .wu-section { grid-column: 1 / 3; }
.wu-row--wide .wu-section > p:not(.readout) { max-width: var(--layout-measure); }
.wu-head .back { display: inline-block; margin-bottom: var(--space-4); }
.wu-head h1 { margin-top: 0; }
.wu-head .out-links { margin-top: var(--space-4) !important; }

/* About */
.about-head { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: var(--space-7); align-items: center; }
.about-mark { width: clamp(6rem, 14vw, 11rem); height: auto; rotate: 6deg; }
.profile-links { display: flex; flex-wrap: wrap; gap: var(--space-3) var(--space-5); list-style: none; margin: var(--space-5) 0 0; padding: 0; }
.profile-links a { display: inline-flex; align-items: center; gap: 0.35em; font-weight: 700; }
.profile-links svg { width: 1.1em; height: 1.1em; fill: currentColor; }
.about-page .wu-section { max-width: var(--layout-measure); }
.about-page .wu-section p { font-size: var(--font-size-lead); line-height: 1.55; }
.reach-out { background: var(--c-surface-quiet); border-radius: var(--radius-md); padding: var(--space-5) var(--space-6) var(--space-6) !important; margin-top: var(--space-5); }
.reach-out .tab { border-bottom: 0; }

/* Footer: social icons, then the copyright row */
.footer { margin-bottom: 0; }
.footer-nav { display: flex; gap: var(--space-5); list-style: none; margin: 0; padding: 0; }
.social { display: flex; gap: var(--space-4); list-style: none; margin: var(--space-2) 0 0; padding: 0; }
.social a { display: grid; place-items: center; width: 2.75rem; height: 2.75rem; border-radius: 50%; border: 2px solid color-mix(in srgb, var(--c-paper) 55%, transparent); transition: background var(--motion-quick) var(--motion-ease), border-color var(--motion-quick) var(--motion-ease); }
.social a:hover { background: var(--c-lime); border-color: var(--c-lime); }
.social a:hover svg { fill: var(--c-ink); }
.social svg { width: 1.35rem; height: 1.35rem; fill: var(--c-paper); }
.colophon { background: var(--c-ink); color: color-mix(in srgb, var(--c-paper) 82%, transparent); }
.colophon .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--space-2) var(--space-5); padding-block: var(--space-4); }
.colophon small { font-size: var(--font-size-note); }

@media (max-width: 1100px) {
  .wu-row { display: block; grid-column: 1; }
}
@media (max-width: 760px) {
  .log-entry { grid-template-columns: 1fr; gap: var(--space-1); }
  .about-head { grid-template-columns: 1fr; }
  .about-mark { display: none; }
  .experiment .stamp--date { font-size: 1rem; }
  .footer-nav { flex-wrap: wrap; gap: var(--space-2) var(--space-4); }
}

/* Phone nav: wordmark on top, the four links on their own row */
@media (max-width: 640px) {
  .nav .wrap { flex-wrap: wrap; gap: 0; min-height: 0; padding-block: var(--space-3) var(--space-2); }
  .nav nav { width: 100%; }
  .nav ul { justify-content: space-between; padding-top: var(--space-2); }
  .nav ul a { display: inline-block; padding-block: var(--space-2); font-size: 0.9375rem; }
}

/* Machines fill their slot (SVG width attributes are only for aspect ratio) */
.wu-machine img, .experiment__machine { width: 100%; height: auto; }

/* Phone footer: content first, the lab bench artwork below it */
@media (max-width: 760px) {
  .footer { background-size: auto 7.5rem; background-position: left bottom; min-height: 0; }
  .footer .wrap { padding-block: var(--space-6) 8.5rem; }
}

/* ================= Experiments as a card grid (v0.3, 31 experiments) ================= */
.experiments {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(19rem, 1fr));
  gap: var(--space-7) var(--space-6);
}
.experiment {
  display: flex; flex-direction: column; align-items: flex-start; gap: 0;
  padding: var(--space-4) 0 0;
  border-top: 3px solid var(--c-text);
}
.experiment:first-child { border-top: 3px solid var(--c-text); }
.experiment__machine { width: 9rem; margin-bottom: var(--space-3); }
.experiment h3 { font-size: 1.2rem; line-height: 1.2; max-width: none; }
.experiment > div > p:not(.out-links) {
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
  font-size: var(--font-size-small); line-height: 1.5;
}
.experiment .tags { margin-top: var(--space-3); }
.experiment .stamp--date {
  position: absolute; top: var(--space-5); right: 0;
  font-size: 0.85rem; margin: 0; justify-self: auto;
}
@media (max-width: 760px) {
  .experiments { grid-template-columns: 1fr; gap: var(--space-6); }
  .experiment { display: grid; grid-template-columns: 5.5rem minmax(0, 1fr); column-gap: var(--space-4); align-items: start; }
  .experiment__machine { width: 100%; margin: 0; }
  .experiment .stamp--date { position: static; grid-column: 2; justify-self: start; margin-top: var(--space-3); font-size: 0.8rem; }
  .experiment > div > p:not(.out-links) { -webkit-line-clamp: 2; }
}

/* ================= Snapshots ================= */
.snaps { padding-top: 0 !important; }
.snaps__grid { display: grid; gap: var(--space-5); }
.snaps__grid--2 { grid-template-columns: 1fr 1fr; }
.snaps__grid--3 { grid-template-columns: 2fr 1fr; grid-template-rows: auto auto; }
.snaps__grid--3 .snap:first-child { grid-row: span 2; }
.snap { margin: 0; }
.snap__link { display: block; border: var(--line-outline) solid var(--c-text); border-radius: var(--radius-md); overflow: hidden; background: var(--c-surface-quiet); box-shadow: 5px 5px 0 color-mix(in srgb, var(--c-text) 85%, transparent); transition: translate var(--motion-quick) var(--motion-ease), box-shadow var(--motion-quick) var(--motion-ease); }
.snap__link:hover { translate: -2px -2px; box-shadow: 7px 7px 0 var(--c-text); }
.snap img { width: 100%; height: auto; display: block; }
.snaps__grid--3 .snap:not(:first-child) img, .snaps__grid--2 img { aspect-ratio: 4 / 3; object-fit: cover; object-position: top; }
.snap figcaption { font-size: var(--font-size-note); color: var(--c-text-muted); margin-top: calc(var(--space-4) + 2px); line-height: 1.45; }
.lightbox { border: 0; padding: 0; background: transparent; max-width: min(94vw, 1600px); max-height: 94vh; }
.lightbox::backdrop { background: color-mix(in srgb, var(--c-ink) 88%, transparent); }
.lightbox img { max-width: 100%; max-height: 84vh; display: block; margin: 0 auto; border-radius: var(--radius-md); }
.lightbox__caption { color: var(--c-paper); text-align: center; margin: var(--space-3) 0 0; font-size: var(--font-size-small); }
.lightbox__close { position: fixed; top: var(--space-4); right: var(--space-5); width: 2.75rem; height: 2.75rem; border-radius: 50%; border: 2px solid var(--c-paper); background: transparent; color: var(--c-paper); font-size: 1.6rem; line-height: 1; cursor: pointer; }
@media (max-width: 760px) {
  .snaps__grid--2, .snaps__grid--3 { grid-template-columns: 1fr; }
  .snaps__grid--3 .snap:first-child { grid-row: auto; }
}

/* ---------- 404 ---------- */
.not-found { padding-block: var(--space-8, 4rem); text-align: center; display: grid; justify-items: center; gap: var(--space-4, 1rem); }
.not-found__machine { width: min(14rem, 60%); height: auto; }
.not-found h1 { font-family: var(--font-family-display); font-size: clamp(2rem, 1rem + 3vw, 3.2rem); font-weight: 800; letter-spacing: -0.03em; text-wrap: balance; }

/* ---------- equipment wall (v0.5): plates on a pegboard, a pinned note card per plate ---------- */
.wall {
  position: relative;
  background-color: var(--c-lab-wall);
  background-image: radial-gradient(circle at 50% 50%, rgba(10, 4, 24, .55) 0 2.2px, transparent 2.8px);
  background-size: 26px 26px;
  border-block: 6px solid var(--c-ink);
  padding-block: var(--space-7) calc(var(--space-7) + 26px);
}
.wall::after {                                   /* hazard strip along the floor */
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 22px;
  background: repeating-linear-gradient(-45deg, var(--c-ink) 0 18px, #FF5B1F 18px 36px);
  border-top: 4px solid var(--c-ink);
}
.wall__inner { display: grid; gap: var(--space-7); }
.rack__label {
  display: inline-block; margin: 0 0 var(--space-4);
  padding: 0.35rem 0.9rem 0.3rem;
  background: var(--c-paper); color: var(--c-ink);
  border: 3px solid var(--c-ink); border-radius: 3px; box-shadow: 3px 3px 0 var(--c-ink);
  font-family: var(--font-family-display); font-weight: 800; font-stretch: 78%;
  font-size: 1.05rem; letter-spacing: 0.09em; text-transform: uppercase;
}
.rack__plates {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(7.5rem, 1fr)); gap: var(--space-4);
}
.rack__slot { scroll-margin-block: 6rem; }
.plate {
  position: relative; width: 100%; aspect-ratio: 1 / 1.08;
  display: grid; grid-template-rows: 1fr auto; justify-items: center; align-items: center;
  gap: 0.35rem; padding: 0.9rem 0.55rem 0.7rem;
  background: var(--c-paper); color: var(--c-ink);
  border: 3px solid var(--c-ink); border-radius: 7px; box-shadow: 4px 4px 0 var(--c-ink);
  font: inherit; cursor: pointer;
  transition: transform 160ms var(--motion-ease, ease), box-shadow 160ms var(--motion-ease, ease);
}
.plate::before, .plate::after {                  /* two screws on the top corners */
  content: ""; position: absolute; top: 6px; width: 7px; height: 7px; border-radius: 50%;
  background: radial-gradient(circle, var(--c-steel-ink) 0 1px, #b9bdc9 1.5px);
  border: 1.5px solid var(--c-ink);
}
.plate::before { left: 6px; } .plate::after { right: 6px; }
.plate__logo { display: grid; place-items: center; width: 3.5rem; height: 3.5rem; }
.plate__logo img { width: 100%; height: 100%; object-fit: contain; }
.plate__mark {
  display: grid; place-items: center; width: 3.5rem; height: 3.5rem;
  border: 3px solid var(--c-ink); border-radius: 50%; background: var(--c-highlight); color: var(--c-ink);
  font-family: var(--font-family-display); font-weight: 800; font-size: 1.15rem; letter-spacing: -0.02em;
}
.plate__mark--long { font-size: 0.8rem; }
.plate__mark--small { width: 2.5rem; height: 2.5rem; font-size: 0.75rem; border-width: 2px; }
.plate__name {
  font-family: var(--font-family-display); font-weight: 700; font-size: 0.82rem; line-height: 1.15;
  text-align: center; text-wrap: balance;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.plate:hover, .plate:focus-visible, .plate.is-open {
  transform: translate(-2px, -3px);
  box-shadow: 6px 7px 0 var(--c-ink), 0 0 0 4px var(--c-highlight), 0 0 22px 6px color-mix(in srgb, var(--c-highlight) 70%, transparent);
  outline: none;
}

/* the note card: paper pinned to the wall, beside its plate on wide screens, a sheet on phones */
.note-card {
  position: fixed; inset: auto; margin: 0;
  width: min(23rem, calc(100vw - 24px)); max-height: calc(100vh - 24px); overflow: auto;
  padding: 1.4rem 1.4rem 1.2rem;
  background: var(--c-paper); color: var(--c-ink);
  border: 3px solid var(--c-ink); border-radius: 6px; box-shadow: var(--shadow-pinned);
  font-size: 0.95rem; line-height: 1.45; rotate: -0.6deg;
}
.note-card::before {                             /* the pin */
  content: ""; position: absolute; top: 9px; left: 50%; width: 14px; height: 14px; margin-left: -7px;
  border-radius: 50%; background: #FF5B1F; border: 2.5px solid var(--c-ink);
}
@media (min-width: 720px) { html.js .note-card:popover-open:not([data-placed]) { visibility: hidden; } }
.note-card::backdrop { background: rgba(10, 4, 24, .18); }
.note-card__close {
  position: absolute; top: 6px; right: 8px; width: 2rem; height: 2rem;
  border: 0; background: none; color: var(--c-ink); font-size: 1.6rem; line-height: 1; cursor: pointer;
}
.note-card__head { display: flex; gap: 0.8rem; align-items: center; margin: 0.6rem 2rem 0.6rem 0; }
.note-card__logo { flex: none; display: grid; place-items: center; width: 2.75rem; height: 2.75rem; }
.note-card__logo img { width: 100%; height: 100%; object-fit: contain; }
.note-card h3 { font-family: var(--font-family-display); font-weight: 800; font-size: 1.3rem; line-height: 1.1; letter-spacing: -0.02em; }
.note-card p { margin: 0.55rem 0 0; }
.note-card__maker { margin: 0.15rem 0 0 !important; font-size: 0.82rem; color: #5A6074; }
.note-card__maker span { white-space: nowrap; }
.note-card__details { list-style: none; margin: 0.7rem 0 0; padding: 0.6rem 0 0; border-top: 2px dashed rgba(26, 20, 36, .35); display: grid; gap: 0.45rem; font-size: 0.88rem; }
.note-card__details strong { display: block; font-family: var(--font-family-display); }
.note-card__version { font-size: 0.85rem; color: #5A6074; }
.note-card__link { font-weight: 700; color: #3D1E6D; text-decoration-thickness: 2px; text-decoration-color: #FF5B1F; }
.note-card__used {
  margin-top: 0.9rem !important; padding-top: 0.6rem; border-top: 2px solid var(--c-ink);
  font-family: var(--font-family-display); font-weight: 800; font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase;
}
.note-card__exps { list-style: none; margin: 0.3rem 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.35rem 0.5rem; }
.note-card__exps a {
  display: inline-block; padding: 0.15rem 0.55rem; border: 2px solid var(--c-ink); border-radius: 999px;
  background: #fff; color: var(--c-ink); font-size: 0.82rem; font-weight: 600; text-decoration: none;
}
.note-card__exps a:hover, .note-card__exps a:focus-visible { background: var(--c-highlight); }
@media (max-width: 719px) {
  .rack__plates { grid-template-columns: repeat(auto-fill, minmax(6.4rem, 1fr)); gap: var(--space-3); }
  .note-card { left: 12px; right: 12px; bottom: 12px; top: auto; width: auto; rotate: 0deg; max-height: 70vh; }
}
@media (prefers-reduced-motion: reduce) { .plate { transition: none; } }
.page--wall { padding-bottom: 0; }
/* focus inside the paper card: dark ring, whatever the page theme (lime on paper is too faint) */
.note-card :focus-visible { outline: 3px solid #3D1E6D; outline-offset: 2px; }

/* ---------- vertical rhythm inside write-up sections (2026-10-22) ----------
   The reset zeroes every margin; only paragraphs had space back, so lists, tables and whatever
   followed them sat tight. One rule now: 1rem between paragraphs, 1.5rem around blocks
   (lists, tables, figures, charts), 0.5rem between list items, nothing after the section tab. */
.wu-section > .tab ~ * { margin-block: 0; }
.wu-section > .tab ~ * + * { margin-top: var(--space-4); }
.wu-section > .tab ~ * + :is(ul, ol, table, figure, pre, blockquote, dl, div),
.wu-section > .tab ~ :is(ul, ol, table, figure, pre, blockquote, dl, div) + * { margin-top: var(--space-5); }
.wu-section > .tab ~ :is(ul, ol):not(.procedure, .gear-list, .log) { padding-left: 1.35em; }
.wu-section :is(ul, ol):not(.procedure, .gear-list, .log) > li + li { margin-top: var(--space-2); }
.wu-section li > :is(ul, ol) { margin-top: var(--space-2); }
.wu-section table { border-collapse: collapse; }
.wu-section :is(th, td) { padding: 0.45em 0.9em 0.45em 0; vertical-align: top; text-align: left; }
.wu-section thead th { border-bottom: 2px solid var(--c-rule); }
.wu-section tbody tr + tr :is(th, td) { border-top: 1px solid color-mix(in srgb, var(--c-rule) 35%, transparent); }

/* equipment list on experiment pages: the bullet hangs, long names wrap under the name, not under the bullet */
.gear-list li { display: block; position: relative; padding-left: 1.35em; }
.gear-list li::before { position: absolute; left: 0; top: 0.42em; }
.gear-list li span { margin-left: 0.5em; }
.wu-section :is(td, th):first-child { white-space: nowrap; }
@media (max-width: 640px) { .wu-section table { display: block; max-width: 100%; overflow-x: auto; } }
.footer .wordmark { font-size: clamp(1.15rem, 0.6rem + 3vw, 1.6rem); }
@media (max-width: 380px) { .wu-machine .stamp { right: 0; font-size: 1.2rem; } }