@font-face {
  font-family: "Bricolage Grotesque";
  font-style: normal;
  font-weight: 200 800;
  font-display: swap;
  src: url("fonts/bricolage-grotesque-latin.woff2") format("woff2");
}

@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 100 700;
  font-display: swap;
  src: url("fonts/ibm-plex-sans-latin.woff2") format("woff2");
}

@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/ibm-plex-mono-400-latin.woff2") format("woff2");
}

@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("fonts/ibm-plex-mono-500-latin.woff2") format("woff2");
}

:root {
  --bg: #131519;
  --card: #1B1E24;
  --border: #252932;
  --border-strong: #333945;
  --row-line: rgba(37, 41, 50, 0.5);
  --well: #22262E;
  --text: #E6E8EC;
  --text-dim: #9BA3AF;
  --green: #4ADE80;
  --amber: #F0B03E;
  --copper: #E8A33D;
  color-scheme: dark;
}

:root[data-theme="light"] {
  --bg: #F5F3EF;
  --card: #FFFFFF;
  --border: #E3DFD7;
  --border-strong: #C9C3B8;
  --row-line: #EEEBE5;
  --well: #ECE8E1;
  --text: #1B1E24;
  --text-dim: #57606A;
  --copper: #9C5209;
  color-scheme: light;
}

:root[data-theme="light"] a:hover {
  color: #7A4207;
}

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

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: "IBM Plex Sans", sans-serif;
  line-height: 1.65;
}

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

a:hover {
  color: #FFC46B;
}

b,
strong {
  font-weight: 500;
}

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

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

.skip-link {
  position: absolute;
  top: -100%;
  left: 24px;
  z-index: 100;
  padding: 10px 16px;
  background-color: var(--copper);
  color: var(--bg);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.78rem;
  text-decoration: none;
  border-radius: 0 0 6px 6px;
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: 0;
}

header {
  border-bottom: 1px solid var(--border);
  padding: 18px 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  align-items: center;

  position: sticky;
  top: 0;
  background-color: var(--bg);
  z-index: 10;
}

header h1 {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.nav-wrap {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
}

nav a {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.78rem;
  color: var(--text-dim);
  text-decoration: none;
}

nav a:hover {
  color: var(--copper);
}

nav a.active {
  color: var(--copper);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  background-color: transparent;
  color: var(--text-dim);
  cursor: pointer;
}

.theme-toggle:hover {
  color: var(--copper);
  border-color: var(--border-strong);
}

.theme-toggle svg {
  width: 16px;
  height: 16px;
}

.theme-toggle .icon-moon {
  display: none;
}

:root[data-theme="light"] .theme-toggle .icon-sun {
  display: none;
}

:root[data-theme="light"] .theme-toggle .icon-moon {
  display: block;
}

section {
  max-width: 900px;
  margin: 0 auto;
  padding: 70px 24px;
  border-bottom: 1px solid var(--border);
}

section[id],
.notes .note {
  scroll-margin-top: 90px;
}

.label {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--copper);
  margin-bottom: 10px;
}

h2 {
  font-family: "Bricolage Grotesque", sans-serif;
  font-weight: 800;
  font-size: 2.3rem;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

h3 {
  font-family: "Bricolage Grotesque", sans-serif;
  font-weight: 600;
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.lede {
  color: var(--text-dim);
  font-size: 1.05rem;
  max-width: 55ch;
  margin-bottom: 14px;
}

.panel {
  background-color: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-top: 34px;
  max-width: 460px;
  overflow: hidden;
}

.panel-top {
  display: flex;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.services {
  list-style: none;
}

.services li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 16px;
  border-bottom: 1px solid var(--row-line);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.82rem;
}

.services li:last-child {
  border-bottom: none;
}

.services i {
  margin-left: auto;
  font-style: normal;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
}

.key {
  display: flex;
  gap: 18px;
  padding: 11px 16px;
  border-top: 1px solid var(--border);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.68rem;
  color: var(--text-dim);
}

.key span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.led {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: #5A6373;
  flex-shrink: 0;
  display: inline-block;
}

.led.on {
  background-color: var(--green);
  box-shadow: 0 0 9px -1px var(--green);
}

.led.work {
  background-color: var(--amber);
  box-shadow: 0 0 9px -1px var(--amber);
  animation: breathe 2.4s infinite;
}

@keyframes breathe {
  50% { opacity: 0.35; }
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.card {
  background-color: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
}

.card:hover {
  border-color: var(--border-strong);
}

.card p {
  color: var(--text-dim);
  font-size: 0.95rem;
}

.kicker {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 14px;
}

.step {
  border-left: 1px solid var(--border);
  padding: 0 0 30px 24px;
  position: relative;
}

.step::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 9px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: var(--border-strong);
  border: 2px solid var(--bg);
}

.step.last {
  border-left-color: transparent;
  padding-bottom: 0;
}

.step.last::before {
  background-color: var(--copper);
  box-shadow: 0 0 10px -1px var(--copper);
}

.when {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--copper);
  margin-bottom: 4px;
}

.step p:last-child {
  color: var(--text-dim);
  font-size: 0.95rem;
  max-width: 60ch;
}

.shots {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

figure {
  background-color: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

.shots img {
  width: 100%;
  height: 190px;
  object-fit: cover;
  display: block;
  background-color: var(--well);
}

.shot-placeholder {
  height: 190px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background-color: var(--well);
  color: var(--text-dim);
}

.shot-placeholder[hidden] {
  display: none;
}

.shot-placeholder svg {
  width: 28px;
  height: 28px;
  opacity: 0.6;
}

.shot-placeholder span {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

figcaption {
  padding: 12px 16px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  color: var(--text-dim);
}

.note {
  background-color: var(--card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--copper);
  border-radius: 0 10px 10px 0;
  padding: 24px;
  max-width: 60ch;
}

.note h3 {
  margin-bottom: 12px;
}

.note p {
  color: var(--text-dim);
}

.note p + p {
  margin-top: 14px;
}

.note code {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.9em;
  color: var(--text);
  background-color: var(--bg);
  padding: 2px 5px;
  border-radius: 4px;
}

.note figure {
  margin-top: 14px;
  width: fit-content;
  max-width: 100%;
}

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

.note pre {
  position: relative;
  background-color: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 14px 16px;
  margin-top: 14px;
  overflow-x: auto;
}

.note pre code {
  background-color: transparent;
  padding: 0;
  color: var(--text-dim);
  white-space: pre;
}

/* field notes */
.notes-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 26px;
  max-width: 68ch;
}

.note-search {
  flex: 1 1 240px;
  min-width: 0;
  padding: 9px 14px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.82rem;
  color: var(--text);
  background-color: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.note-search::placeholder {
  color: var(--text-dim);
}

.note-search:focus-visible {
  outline-offset: 0;
}

.tool-btn {
  padding: 9px 14px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-dim);
  background-color: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
}

.tool-btn:hover {
  color: var(--copper);
  border-color: var(--border-strong);
}

.notes-empty {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-bottom: 12px;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 20px;
}

.filter {
  padding: 6px 12px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-dim);
  background-color: transparent;
  border: 1px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
}

.filter:hover {
  color: var(--copper);
  border-color: var(--border-strong);
}

.filter.active {
  color: var(--bg);
  background-color: var(--copper);
  border-color: var(--copper);
}

.filter .count {
  opacity: 0.75;
}

.notes {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.notes .note {
  max-width: 68ch;
  padding: 0;
}

.notes .note[hidden] {
  display: none;
}

.note summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  padding: 18px 48px 18px 24px;
  cursor: pointer;
  list-style: none;
  position: relative;
}

.note summary::-webkit-details-marker {
  display: none;
}

.note summary::after {
  content: "+";
  position: absolute;
  right: 22px;
  top: 50%;
  transform: translateY(-50%);
  font-family: "IBM Plex Mono", monospace;
  font-size: 1.1rem;
  color: var(--text-dim);
}

.note[open] summary::after {
  content: "\2212";
  color: var(--copper);
}

.note summary:hover h3 {
  color: var(--copper);
}

.notes .note summary h3 {
  margin: 0;
  font-size: 1.1rem;
}

.notes .note > :not(summary) {
  margin-left: 24px;
  margin-right: 24px;
}

.notes .note > :last-child {
  margin-bottom: 24px;
}

.permalink {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.8rem;
  color: var(--text-dim);
  text-decoration: none;
  opacity: 0;
}

.note summary:hover .permalink,
.permalink:focus-visible {
  opacity: 1;
}

.permalink:hover {
  color: var(--copper);
}

@media (hover: none) {
  .permalink {
    opacity: 0.6;
  }
}

.updated {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.tag {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--copper);
  min-width: 7.5em;
}

.notes .note .nl {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text);
  margin-top: 16px;
  margin-bottom: 4px;
}

.notes .note .nl + p {
  margin-top: 0;
}

.notes .note summary + .nl {
  margin-top: 0;
}

.copy-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 4px 10px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-dim);
  background-color: var(--card);
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
}

.copy-btn:hover {
  color: var(--copper);
  border-color: var(--border-strong);
}

/* setup */
.diagram {
  margin-top: 30px;
}

.diagram-scroll {
  overflow-x: auto;
}

.diagram svg {
  display: block;
  width: 100%;
  min-width: 700px;
  height: auto;
}

.d-box {
  fill: var(--card);
  stroke: var(--border);
  stroke-width: 1.5;
}

.d-accent {
  stroke: var(--copper);
  stroke-opacity: 0.6;
}

.d-disk {
  fill: var(--bg);
}

.d-zone {
  fill: none;
  stroke: var(--border);
  stroke-width: 1.5;
  stroke-dasharray: 5 5;
}

.d-zone-main {
  fill: var(--bg);
  stroke-dasharray: none;
}

.d-zone-label {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  fill: var(--copper);
}

.d-title {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 13px;
  font-weight: 500;
  fill: var(--text);
}

.d-sub,
.d-label {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  fill: var(--text-dim);
}

.d-edge {
  fill: none;
  stroke: var(--text-dim);
  stroke-width: 1.5;
}

.d-dashed {
  stroke-dasharray: 3 3;
}

.d-arrow {
  fill: var(--text-dim);
}

.specs-panel {
  max-width: 560px;
}

.specs div {
  display: flex;
  flex-wrap: wrap;
  gap: 2px 14px;
  padding: 9px 16px;
  border-bottom: 1px solid var(--row-line);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.82rem;
}

.specs dt {
  width: 6.5em;
  flex-shrink: 0;
  color: var(--text-dim);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  line-height: 2;
}

.specs dd i {
  font-style: normal;
  color: var(--text-dim);
  margin-left: 6px;
}

.specs-note {
  padding: 11px 16px;
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* site log */
.log {
  list-style: none;
  max-width: 60ch;
}

.log li {
  display: flex;
  gap: 18px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.log li:last-child {
  border-bottom: none;
}

.log time {
  flex-shrink: 0;
  width: 6.5em;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--copper);
  line-height: 2.2;
}

.log p {
  color: var(--text-dim);
}

/* photo lightbox */
img.zoomable {
  cursor: zoom-in;
}

.lightbox {
  margin: auto;
  padding: 0;
  max-width: min(1100px, calc(100vw - 32px));
  max-height: calc(100vh - 32px);
  background-color: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: auto;
}

.lightbox::backdrop {
  background-color: rgba(0, 0, 0, 0.75);
}

.lightbox img {
  display: block;
  max-width: 100%;
  max-height: calc(100vh - 110px);
  margin: 0 auto;
}

.lightbox-caption {
  padding: 12px 16px 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem;
  color: var(--text-dim);
}

.lightbox-bar {
  display: flex;
  justify-content: flex-end;
  padding: 10px 16px 14px;
}

.lede-gap {
  margin-top: 30px;
}

footer {
  text-align: center;
  padding: 34px 24px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem;
  color: var(--text-dim);
}

.fine-print {
  max-width: 60ch;
  margin: 10px auto 0;
  font-size: 0.68rem;
  opacity: 0.8;
}

#back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 50%;
  background-color: var(--card);
  color: var(--text-dim);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
}

#back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#back-to-top:hover {
  color: var(--copper);
  border-color: var(--border-strong);
}

#back-to-top svg {
  width: 18px;
  height: 18px;
}

@media (max-width: 640px) {
  h2 {
    font-size: 1.8rem;
  }

  section {
    padding: 48px 20px;
  }

  nav {
    gap: 6px 14px;
  }

  section[id],
  .notes .note {
    scroll-margin-top: 130px;
  }
}

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

@media print {
  body {
    background: #fff;
    color: #111;
  }

  header {
    position: static;
    background: #fff;
  }

  a {
    color: #111;
    text-decoration: underline;
  }

  .panel,
  .card,
  figure,
  .note,
  .shot-placeholder {
    background: #fff;
    border-color: #999;
  }

  .card:hover {
    border-color: #999;
  }

  .led {
    box-shadow: none;
    animation: none;
  }

  .filters,
  .notes-tools,
  .notes-empty,
  .permalink,
  .lightbox,
  .note summary::after,
  .skip-link,
  .theme-toggle,
  .copy-btn,
  #back-to-top {
    display: none;
  }
}