/* Quarrywise: limestone, slate and a cut quarry face. No scripts, no external assets. */

:root {
  color-scheme: light dark;

  --bg: #eceee9;
  --surface: #f7f8f5;
  --ink: #1d2a2f;
  --muted: #4a585d;
  --line: #b9c1c0;
  --accent: #1f5576;
  --accent-ink: #f7f8f5;
  --seam: #b9822a;

  /* strata */
  --s1: #f7f8f5;
  --s1-rule: #c6cfcf;
  --s2: #c9c5b8;
  --s2-joint: #948f80;
  --s3: #95a19f;
  --s3-grain: #66726f;
  --s4: #33434a;
  --s4-hatch: #4a5c63;

  --display: "Bahnschrift", "DIN Alternate", "DIN Next", "Avenir Next Condensed", "Roboto Condensed", "Arial Narrow", sans-serif;
  --text: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --code: ui-monospace, "Cascadia Code", "SF Mono", Consolas, "Liberation Mono", monospace;

  --gutter: clamp(16px, 4vw, 56px);
  --measure: 66ch;
  --wide: 74rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1b2529;
    --surface: #222e33;
    --ink: #e2e6e1;
    --muted: #a8b3b3;
    --line: #3b4b51;
    --accent: #8cc4e4;
    --accent-ink: #13212a;
    --seam: #d1a04a;

    --s1: #2a373c;
    --s1-rule: #3d4e54;
    --s2: #4a4a43;
    --s2-joint: #2e2f2a;
    --s3: #3b4846;
    --s3-grain: #586764;
    --s4: #11191c;
    --s4-hatch: #26343a;
  }
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--text);
  font-size: 1.0625rem;
  line-height: 1.6;
  overflow-wrap: break-word;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  text-decoration-thickness: 2px;
}

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

h1,
h2,
h3 {
  font-family: var(--display);
  font-stretch: 85%;
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 0;
  text-wrap: balance;
}

h2 {
  font-size: clamp(1.75rem, 1.2rem + 2vw, 2.4rem);
}

h3 {
  font-size: 1.4rem;
}

p {
  margin: 0 0 1em;
  max-width: var(--measure);
}

code,
pre {
  font-family: var(--code);
  font-size: 0.9em;
}

.skip {
  position: absolute;
  left: 16px;
  top: -4rem;
  z-index: 10;
  padding: 0.5rem 0.9rem;
  background: var(--ink);
  color: var(--bg);
}

.skip:focus {
  top: 0.75rem;
}

.wrap {
  max-width: var(--wide);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* Header */

.site-header {
  border-bottom: 1px solid var(--line);
}

.site-header .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 2rem;
  padding-block: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--ink);
  text-decoration: none;
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.35rem;
  letter-spacing: 0.01em;
}

.brand img {
  width: 30px;
  height: 30px;
}

.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav a {
  color: var(--ink);
  text-decoration: none;
  padding-block: 0.3rem;
  border-bottom: 2px solid transparent;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  border-bottom-color: var(--seam);
}

/* Hero */

.hero {
  padding-block: clamp(3rem, 8vw, 6.5rem) clamp(2.5rem, 6vw, 4.5rem);
}

.hero h1 {
  font-size: clamp(2.6rem, 1.2rem + 6.2vw, 5.6rem);
  font-stretch: 75%;
  line-height: 0.96;
  letter-spacing: -0.02em;
  max-width: 13ch;
  margin-bottom: 1.6rem;
}

.lede {
  font-size: clamp(1.125rem, 1rem + 0.5vw, 1.3rem);
  line-height: 1.55;
  color: var(--muted);
  max-width: 40rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  align-items: center;
  margin-top: 2rem;
}

.button {
  display: inline-block;
  padding: 0.8rem 1.4rem;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
  text-decoration: none;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
}

.button:hover {
  background: var(--ink);
  color: var(--bg);
}

/* The quarry face: four strata, newest on top */

.face {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.stratum {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 7.5rem;
  padding: 2.25rem var(--gutter) 1.75rem;
  margin-top: -14px;
  clip-path: polygon(0 12px, 9% 5px, 22% 14px, 36% 3px, 51% 11px, 64% 2px, 79% 12px, 91% 4px, 100% 9px, 100% 100%, 0 100%);
}

.stratum:first-child {
  margin-top: 0;
  clip-path: none;
}

.stratum-rows {
  min-height: 8.5rem;
  background-color: var(--s1);
  background-image: repeating-linear-gradient(to bottom, transparent 0 27px, var(--s1-rule) 27px 28px),
    repeating-linear-gradient(to right, transparent 0 159px, var(--s1-rule) 159px 160px);
}

.stratum-blocks {
  min-height: 9.5rem;
  background-color: var(--s2);
  background-image: linear-gradient(to bottom, var(--s2-joint) 2px, transparent 2px),
    conic-gradient(at 2px 38px, transparent 0 75%, var(--s2-joint) 75% 100%),
    conic-gradient(at 2px 38px, transparent 0 75%, var(--s2-joint) 75% 100%);
  background-size: 100% 38px, 120px 76px, 120px 76px;
  background-position: 0 0, 0 0, 60px 38px;
}

.stratum-seam {
  min-height: 0;
  height: 30px;
  padding: 0;
  background: var(--seam);
}

.stratum-sediment {
  min-height: 8rem;
  background-color: var(--s3);
  background-image: radial-gradient(circle, var(--s3-grain) 1.3px, transparent 1.8px),
    radial-gradient(circle, var(--s3-grain) 1px, transparent 1.5px);
  background-size: 11px 9px, 17px 13px;
  background-position: 0 0, 5px 4px;
}

.stratum-bedrock {
  min-height: 8rem;
  background-color: var(--s4);
  background-image: repeating-linear-gradient(135deg, var(--s4-hatch) 0 2px, transparent 2px 11px);
}

.stratum .tag {
  max-width: 27rem;
  margin-inline: auto 0;
  padding: 0.8rem 1.1rem;
  background: var(--surface);
  border: 1px solid var(--ink);
}

.stratum:nth-child(even) .tag {
  margin-inline: 0 auto;
}

@media (min-width: 64rem) {
  .stratum .tag {
    margin-inline-end: 12%;
  }

  .stratum:nth-child(even) .tag {
    margin-inline-start: 6%;
  }
}

.tag strong {
  display: block;
  font-family: var(--display);
  font-size: 1.15rem;
  font-weight: 600;
}

.tag span {
  display: block;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.45;
}

.face-caption {
  padding-block: 1rem 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* Sections */

.section {
  padding-block: clamp(3.5rem, 8vw, 6rem);
}

.section + .section {
  background: linear-gradient(var(--line), var(--line)) center top / calc(100% - 2 * var(--gutter)) 1px no-repeat;
}

.section-head {
  margin-bottom: 2.5rem;
}

.section-head h2 {
  margin-bottom: 0.75rem;
}

.section-head p {
  color: var(--muted);
  margin: 0;
}

/* Tool blocks: cut stone with a chamfered corner */

.tools {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 30rem), 1fr));
}

.block {
  position: relative;
  isolation: isolate;
  display: flex;
  flex-direction: column;
  padding: 1.75rem clamp(1.25rem, 3vw, 2rem) 2rem;
  background: var(--ink);
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 0 100%);
}

.block::before {
  content: "";
  position: absolute;
  inset: 1.5px;
  z-index: -1;
  background: var(--surface);
  clip-path: polygon(0 0, calc(100% - 27.4px) 0, 100% 27.4px, 100% 100%, 0 100%);
}

.block .core {
  height: 14px;
  margin: -0.25rem 0 1.4rem;
  border: 1px solid var(--line);
}

.core-sirene {
  background-color: var(--s3);
  background-image: radial-gradient(circle, var(--s3-grain) 1.3px, transparent 1.8px);
  background-size: 9px 7px;
}

.core-jobs {
  background-color: var(--s1);
  background-image: repeating-linear-gradient(to right, var(--s1-rule) 0 1px, transparent 1px 22px);
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.75rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.status::before {
  content: "";
  width: 0.7rem;
  height: 0.7rem;
  border: 2px solid var(--seam);
  border-radius: 50%;
}

.block h3 {
  margin-bottom: 0.3rem;
}

.block .sub {
  font-family: var(--display);
  font-size: 1.1rem;
  color: var(--muted);
  margin-bottom: 1.2rem;
}

.block dl {
  margin: 0.5rem 0 1.5rem;
  border-top: 1px solid var(--line);
}

.block dt {
  margin-top: 0.9rem;
  font-weight: 600;
}

.block dd {
  margin: 0.1rem 0 0;
  color: var(--muted);
}

.block .store {
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 0.95rem;
}

.block .store a {
  font-weight: 600;
}

/* Principles */

.principles {
  display: grid;
  gap: 0 3rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr));
  margin: 0;
}

.principles > div {
  padding-block: 1.25rem 0.5rem;
  border-top: 3px solid var(--ink);
}

.principles dt {
  font-family: var(--display);
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.principles dd {
  margin: 0 0 1rem;
  color: var(--muted);
}

/* Steps: an ordered sequence, so they are numbered */

.steps {
  counter-reset: step;
  display: grid;
  gap: 2rem 3rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 13rem), 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
}

.steps li {
  counter-increment: step;
}

.steps li::before {
  content: counter(step);
  display: block;
  font-family: var(--display);
  font-stretch: 75%;
  font-size: 3rem;
  font-weight: 600;
  line-height: 1;
  color: var(--seam);
  margin-bottom: 0.5rem;
}

.steps h3 {
  font-size: 1.25rem;
  margin-bottom: 0.4rem;
}

.steps p {
  color: var(--muted);
  margin: 0;
}

/* Long-form pages (bot, legal) */

.page-head {
  padding-block: clamp(3rem, 7vw, 5rem) 2rem;
}

.page-head h1 {
  font-size: clamp(2.4rem, 1.4rem + 4.5vw, 4.2rem);
  font-stretch: 75%;
  line-height: 1;
  margin-bottom: 1rem;
}

.prose {
  padding-bottom: clamp(3.5rem, 8vw, 6rem);
}

.prose section {
  max-width: 46rem;
  padding-block: 2rem;
  border-top: 1px solid var(--line);
}

.prose h2 {
  font-size: 1.75rem;
  margin-bottom: 1rem;
}

.prose ul {
  max-width: var(--measure);
  margin: 0 0 1em;
  padding-left: 1.25rem;
}

.prose li + li {
  margin-top: 0.4rem;
}

.prose li::marker {
  color: var(--seam);
}

pre {
  margin: 0 0 1.25rem;
  padding: 1rem 1.2rem;
  overflow-x: auto;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  background: var(--s4);
  color: #e2e6e1;
  border-left: 6px solid var(--seam);
  line-height: 1.5;
}

p code,
li code,
dd code {
  padding: 0.05em 0.3em;
  background: var(--surface);
  border: 1px solid var(--line);
}

.facts {
  margin: 0 0 1.25rem;
  display: grid;
  grid-template-columns: minmax(9rem, max-content) 1fr;
  gap: 0.6rem 1.5rem;
}

.facts dt {
  font-weight: 600;
}

.facts dd {
  margin: 0;
}

@media (max-width: 30rem) {
  .facts {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .facts dd {
    margin-bottom: 0.8rem;
  }
}

.updated {
  color: var(--muted);
  font-size: 0.95rem;
}

/* 404: a faulted section, the layers do not line up */

.fault {
  display: grid;
  grid-template-columns: 1fr 1fr;
  max-width: 28rem;
  height: 7rem;
  margin-block: 2rem 3.75rem;
}

.fault div {
  display: grid;
  grid-template-rows: 1fr 6px 1fr 1fr;
}

.fault div:last-child {
  transform: translateY(1.75rem);
}

.fault span:nth-child(1) {
  background-color: var(--s2);
  background-image: linear-gradient(to bottom, var(--s2-joint) 2px, transparent 2px);
  background-size: 100% 14px;
}

.fault span:nth-child(2) {
  background: var(--seam);
}

.fault span:nth-child(3) {
  background-color: var(--s3);
  background-image: radial-gradient(circle, var(--s3-grain) 1.2px, transparent 1.7px);
  background-size: 9px 7px;
}

.fault span:nth-child(4) {
  background-color: var(--s4);
  background-image: repeating-linear-gradient(135deg, var(--s4-hatch) 0 2px, transparent 2px 9px);
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--surface);
  font-size: 0.95rem;
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1.25rem 2rem;
  padding-block: 2rem 2.5rem;
}

.site-footer p {
  margin: 0;
  color: var(--muted);
}

.site-footer ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

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