@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  --black: #0d1112;
  --panel: #151b1d;
  --paper: #edf0ea;
  --cyan: #8ed8df;
  --acid: #cedc72;
  --orange: #e67f45;
  --muted: #98a3a5;
  --line: rgba(237, 240, 234, 0.15);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--black);
  color: var(--paper);
  font-family: 'Space Grotesk', sans-serif;
}

header {
  padding: 20px clamp(20px, 4vw, 60px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  border-bottom: 1px solid var(--line);
}

.brand {
  color: var(--acid);
  font-family: 'JetBrains Mono', monospace;
  text-decoration: none;
}

header ul,
footer ul {
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  list-style: none;
}

header a,
footer a {
  color: inherit;
  text-decoration: none;
}

header nav a[aria-current='page'],
header nav a:hover {
  color: var(--cyan);
}

main {
  width: min(1280px, calc(100% - 40px));
  margin: 0 auto;
}

.lab-intro {
  padding: 90px 0 70px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 70px;
  align-items: end;
}

.code-label {
  margin: 0 0 15px;
  color: var(--orange);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.73rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: clamp(4rem, 8vw, 8rem);
  line-height: 0.87;
  letter-spacing: -0.055em;
}

.lab-intro > p,
.decoder-copy > p,
.lab-notes p,
.translation-problem p,
.closing p {
  color: var(--muted);
  line-height: 1.8;
}

.term-types {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.term-types article {
  min-height: 360px;
  padding: 28px;
  border: 1px solid var(--line);
  background: var(--panel);
}

.term-types article > span {
  color: var(--cyan);
  font-family: 'JetBrains Mono', monospace;
}

.term-types h2 {
  margin: 70px 0 18px;
  font-size: 2.2rem;
}

.term-types p:last-child {
  color: var(--muted);
  line-height: 1.7;
}

.decoder,
.lab-notes,
.translation-problem,
.closing {
  margin: 100px 0;
}

.decoder {
  padding: clamp(30px, 6vw, 68px);
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 50px;
  border: 1px solid var(--line);
  background: var(--panel);
}

.decoder h2,
.translation-problem h2,
.closing h2 {
  margin-bottom: 22px;
  font-size: clamp(3rem, 6vw, 6rem);
  line-height: 0.94;
}

.decoder-buttons {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.decoder-buttons button {
  padding: 11px 14px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--paper);
  cursor: pointer;
  font: inherit;
}

.decoder-buttons button:hover,
.decoder-buttons button.is-active {
  background: var(--acid);
  border-color: var(--acid);
  color: var(--black);
}

.decoder-result {
  padding: 30px;
  background: var(--paper);
  color: var(--black);
}

.decoder-result > span {
  color: #587014;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  text-transform: uppercase;
}

.decoder-result h3 {
  margin: 50px 0 18px;
  font-size: 2.5rem;
}

.decoder-result p {
  line-height: 1.75;
}

.lab-notes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.lab-notes article {
  padding: 32px;
  background: var(--black);
}

.lab-notes h2 {
  margin: 65px 0 20px;
  font-size: 2.3rem;
}

.translation-problem {
  padding: clamp(30px, 6vw, 68px);
  background: var(--paper);
  color: var(--black);
}

.translation-problem h2 {
  max-width: 1000px;
}

.translation-problem > div {
  columns: 2;
  column-gap: 60px;
}

.translation-problem p {
  margin-top: 0;
  color: #394044;
}

.closing {
  max-width: 920px;
  margin-right: auto;
  margin-left: auto;
}

footer {
  padding: 36px;
  display: flex;
  justify-content: center;
  border-top: 1px solid var(--line);
}

@media (max-width: 900px) {
  header {
    align-items: flex-start;
    flex-direction: column;
  }

  .lab-intro,
  .decoder {
    grid-template-columns: 1fr;
  }

  .term-types,
  .lab-notes {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 600px) {
  .term-types,
  .lab-notes {
    grid-template-columns: 1fr;
  }

  .translation-problem > div {
    columns: 1;
  }
}