/* ==========================================================================
   moonward — one stylesheet for four pages
   Light is the workshop: enamel panels, ink, a furnace-orange signal.
   Dark is the night bay: the same machine with the lights off.
   ========================================================================== */

:root {
  --bg: #dcd8cd;
  --plate: #f1eee6;
  --plate-2: #e6e2d7;
  --plate-3: #d4d0c4;
  --ink: #121417;
  --dim: #5d6268;
  --faint: #8b8f93;
  --line: #bdb9ac;
  --line-soft: #cfcbc0;
  --hot: #c8410c;
  --hot-soft: #f0d8c8;
  --sig: #0f6f52;
  --sig-soft: #cfe0d6;
  --screen: #0d0f11;
  --screen-2: #141719;
  --screen-ink: #ded9cd;
  --screen-dim: #7d848a;
  --screen-line: #262b2f;
  --amber: #d98a00;
  --screw: #8d8a80;
  --shadow: 0 1px 0 #ffffff80, 0 1px 2px #00000012;
  --chamfer: 14px;
  --gut: 26px;
  --max: 1260px;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0b0d;
    --plate: #121417;
    --plate-2: #181b1f;
    --plate-3: #22262b;
    --ink: #e8e4d9;
    --dim: #8f959c;
    --faint: #666c73;
    --line: #262a30;
    --line-soft: #1c2024;
    --hot: #ff6a1f;
    --hot-soft: #38200f;
    --sig: #35d99a;
    --sig-soft: #10312a;
    --screen: #08090a;
    --screen-2: #101315;
    --screen-ink: #ded9cd;
    --screen-dim: #767d84;
    --screen-line: #22272b;
    --amber: #f0a41c;
    --screw: #3a4046;
    --shadow: 0 1px 0 #ffffff0a, 0 2px 10px #00000060;
    color-scheme: dark;
  }
}

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

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

@supports not selector(::-webkit-scrollbar) {
  html {
    scrollbar-color: var(--hot) var(--plate-2);
    scrollbar-width: thin;
  }
}

@supports not selector(::-webkit-scrollbar) {
  html {
    scrollbar-color: var(--hot) var(--plate-2);
    scrollbar-width: thin;
  }
}

::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}

::-webkit-scrollbar-track {
  background: var(--plate-2);
  border-left: 1px solid var(--line);
}

::-webkit-scrollbar-thumb {
  background: var(--line);
  border: 3px solid var(--plate-2);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--hot);
}

::-webkit-scrollbar-corner {
  background: var(--plate-2);
}

body {
  margin: 0;
  background-color: var(--bg);
  background-image:
    linear-gradient(
      to right,
      color-mix(in oklab, var(--line) 34%, transparent) 0 1px,
      transparent 1px 100%
    ),
    linear-gradient(
      to bottom,
      color-mix(in oklab, var(--line) 34%, transparent) 0 1px,
      transparent 1px 100%
    );
  background-size: 64px 64px, 64px 64px;
  color: var(--ink);
  font-family: Archivo, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  font-kerning: normal;
  text-rendering: optimizeLegibility;
}

samp,
code,
kbd,
pre {
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  font-variant-ligatures: none;
}

a {
  color: inherit;
  text-decoration: none;
}

h1,
h2,
h3,
h4 {
  font-family: "Big Shoulders Display", Archivo, sans-serif;
  font-weight: 800;
  line-height: 0.92;
  letter-spacing: -0.015em;
  margin: 0;
  text-transform: uppercase;
}

p {
  margin: 0;
}

::selection {
  background: var(--hot);
  color: #fff;
}

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

/* --- small pieces ------------------------------------------------------- */

.tag {
  font-family: "IBM Plex Mono", monospace;
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dim);
}

.tag--hot {
  color: var(--hot);
}

.tag--sig {
  color: var(--sig);
}

.mono {
  font-family: "IBM Plex Mono", monospace;
  font-variant-numeric: tabular-nums;
}

.hazard {
  height: 5px;
  background: repeating-linear-gradient(
    45deg,
    color-mix(in oklab, var(--hot) 78%, transparent) 0 5px,
    transparent 5px 11px
  );
  opacity: 0.55;
}

.plate {
  position: relative;
  background: var(--plate);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.screws::before {
  content: "";
  position: absolute;
  inset: 7px;
  pointer-events: none;
  background-image:
    radial-gradient(circle, var(--screw) 0 1.6px, transparent 2px),
    radial-gradient(circle, var(--screw) 0 1.6px, transparent 2px),
    radial-gradient(circle, var(--screw) 0 1.6px, transparent 2px),
    radial-gradient(circle, var(--screw) 0 1.6px, transparent 2px);
  background-repeat: no-repeat;
  background-position:
    left top,
    right top,
    left bottom,
    right bottom;
  opacity: 0.75;
}

.led {
  display: inline-block;
  width: 7px;
  height: 7px;
  background: var(--sig);
  box-shadow: 0 0 0 1px color-mix(in oklab, var(--sig) 40%, transparent);
}

.led--hot {
  background: var(--hot);
  box-shadow: 0 0 0 1px color-mix(in oklab, var(--hot) 40%, transparent);
}

.led--pulse {
  animation: pulse 2.4s var(--ease) infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.25;
  }
}

/* --- shell -------------------------------------------------------------- */

.shell {
  width: min(100% - var(--gut) * 2, var(--max));
  margin-inline: auto;
}

.rail {
  position: sticky;
  top: 0;
  z-index: 60;
  background: color-mix(in oklab, var(--bg) 88%, var(--plate));
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(6px);
}

.rail__in {
  display: flex;
  align-items: stretch;
  gap: 0;
  height: 58px;
  width: min(100% - var(--gut) * 2, var(--max));
  margin-inline: auto;
}

.rail__mark {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-inline: 2px 18px;
  border-right: 1px solid var(--line);
  font-family: "Big Shoulders Display", sans-serif;
  font-size: 21px;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.rail__mark svg {
  width: 18px;
  height: 18px;
  color: var(--hot);
}

.rail__mark span {
  line-height: 1;
}

.rail__ch {
  display: flex;
  align-items: stretch;
  margin-left: auto;
}

.rail__ch a {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  padding-inline: 16px;
  border-left: 1px solid var(--line-soft);
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dim);
  transition: color 0.15s var(--ease), background 0.15s var(--ease);
}

.rail__ch a b {
  font-weight: 500;
  color: var(--faint);
  font-size: 9.5px;
}

.rail__ch a:hover {
  color: var(--ink);
  background: var(--plate-2);
}

.rail__ch a[aria-current="page"] {
  color: var(--ink);
  background: var(--plate);
}

.rail__ch a[aria-current="page"]::after {
  content: "";
  position: absolute;
  inset: auto 0 -1px 0;
  height: 2px;
  background: var(--hot);
}

.rail__git {
  display: flex;
  align-items: center;
  padding-inline: 14px;
  border-left: 1px solid var(--line);
  color: var(--ink);
}

.rail__git svg {
  width: 17px;
  height: 17px;
}

.rail__git:hover {
  background: var(--hot);
  color: #fff;
}

.rail__ver {
  display: flex;
  align-items: center;
  padding-inline: 12px 2px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 10.5px;
  color: var(--faint);
  letter-spacing: 0.06em;
}

/* --- buttons ------------------------------------------------------------ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px 11px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--bg);
  font-family: "IBM Plex Mono", monospace;
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition:
    transform 0.12s var(--ease),
    background 0.15s var(--ease),
    color 0.15s var(--ease);
}

.btn:hover {
  background: var(--hot);
  border-color: var(--hot);
  color: #fff;
}

.btn:active {
  transform: translateY(1px);
}

.btn--ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}

.btn--ghost:hover {
  background: var(--plate-2);
  border-color: var(--ink);
  color: var(--ink);
}

.btn--sm {
  padding: 8px 12px 7px;
  font-size: 10px;
}

/* --- screens (code and terminals live on dark glass in both themes) ----- */

.screen {
  position: relative;
  background: var(--screen);
  border: 1px solid #000;
  color: var(--screen-ink);
  box-shadow:
    inset 0 0 0 1px #ffffff08,
    0 1px 0 #ffffff40;
}

.screen__bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--screen-line);
  font-family: "IBM Plex Mono", monospace;
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--screen-dim);
  background: var(--screen-2);
}

.screen__bar b {
  color: var(--screen-ink);
  font-weight: 500;
}

.screen__bar .spacer {
  margin-left: auto;
}

pre.code,
pre.out {
  margin: 0;
  padding: 16px 18px;
  overflow-x: auto;
  font-size: 12.5px;
  line-height: 1.75;
  tab-size: 2;
  color: var(--screen-ink);
}

pre.code {
  white-space: pre;
}

pre.out {
  white-space: pre;
  color: #a9d6bd;
  background: #00000040;
  border-top: 1px dashed var(--screen-line);
}

pre.out::-webkit-scrollbar,
pre.code::-webkit-scrollbar {
  height: 8px;
}

pre.out::-webkit-scrollbar-thumb,
pre.code::-webkit-scrollbar-thumb {
  background: #394044;
  border: 2px solid var(--screen);
}

.cm {
  color: #5f6b63;
}

.kw {
  color: #ff8f5e;
}

.ty {
  color: #8ec9e8;
}

.st {
  color: #b7d98a;
}

.nu {
  color: #e0b48a;
}

.cal {
  color: #e8e2d2;
}

/* --- page head ---------------------------------------------------------- */

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 10.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--dim);
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--hot);
}

.lede {
  font-size: clamp(15px, 1.4vw, 17.5px);
  line-height: 1.62;
  color: var(--dim);
  max-width: 46ch;
}

/* --- hud frame ---------------------------------------------------------- */

.hud__gauge {
  position: fixed;
  inset: 70px 7px 70px auto;
  width: 2px;
  background: var(--line-soft);
  z-index: 40;
  pointer-events: none;
}

.hud__gauge i {
  display: block;
  width: 100%;
  height: 0;
  background: var(--hot);
  transform-origin: top;
}

.hud__read {
  position: fixed;
  left: 10px;
  bottom: 10px;
  z-index: 40;
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--faint);
  pointer-events: none;
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

.hud__c {
  position: fixed;
  width: 16px;
  height: 16px;
  z-index: 40;
  pointer-events: none;
  border-color: var(--line);
  border-style: solid;
  border-width: 0;
}

.hud__c--br {
  right: 16px;
  bottom: 16px;
  border-right-width: 1px;
  border-bottom-width: 1px;
}

.hud__c--bl {
  left: 16px;
  bottom: 16px;
  border-left-width: 1px;
  border-bottom-width: 1px;
}

@media (width <= 860px) {
  .hud {
    display: none;
  }
}

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

.foot {
  border-top: 1px solid var(--line);
  margin-top: 72px;
  padding-block: 26px 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px 28px;
  align-items: center;
  font-family: "IBM Plex Mono", monospace;
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--faint);
}

.foot a:hover {
  color: var(--hot);
}

.foot .spacer {
  margin-left: auto;
}

@media (width <= 860px) {
  :root {
    --gut: 16px;
  }

  .rail {
    position: fixed;
    inset: auto 0 0 0;
    top: auto;
    border-top: 1px solid var(--line);
    border-bottom: 0;
    background: color-mix(in oklab, var(--bg) 94%, var(--plate));
  }

  .rail__in {
    height: 56px;
  }

  .rail__mark,
  .rail__ver,
  .rail__ch a b {
    display: none;
  }

  .rail__ch {
    flex: 1;
    margin-left: 0;
  }

  .rail__ch a {
    flex: 1;
    justify-content: center;
    padding-inline: 4px;
    font-size: 10px;
    letter-spacing: 0.1em;
    border-left: 1px solid var(--line-soft);
  }

  .rail__ch a:first-child {
    border-left: 0;
  }

  .rail__git {
    padding-inline: 12px;
    border-left: 1px solid var(--line);
  }

  body {
    padding-bottom: 56px;
  }

  .foot {
    padding-bottom: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

html, button, input, textarea, select { font-variant-ligatures: no-contextual; }

/* The page scroll bar shows while the page moves or under the pointer and
   hides a moment after; it keeps its place, so nothing shifts. */
@supports selector(::-webkit-scrollbar) {
  html:not(.scrolling)::-webkit-scrollbar-thumb { background: transparent; border-color: transparent; box-shadow: none; }
}
@supports not selector(::-webkit-scrollbar) {
  html:not(.scrolling) { scrollbar-color: transparent transparent; }
}