:root {
  --paper: #edf0e9;
  --navy: #102a35;
  --cyan: #45bfc1;
  --teal: #356f73;
  --gold: #a78d45;
  --red: #b54d43;
  --muted: #6f7e83;
  --line: rgba(16, 42, 53, 0.2);
  --mono: "IBM Plex Mono", monospace;
  --sans: "Inter", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  background-color: var(--paper);
  background-image: radial-gradient(circle, rgba(16, 42, 53, 0.12) 1px, transparent 1.25px);
  background-size: 28px 28px;
  color: var(--navy);
  font-family: var(--sans);
}

body::before {
  position: fixed;
  z-index: 20;
  top: 0;
  bottom: 0;
  left: clamp(28px, 3vw, 52px);
  width: 2px;
  background: rgba(181, 77, 67, 0.62);
  content: "";
  pointer-events: none;
}

a { color: inherit; }

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem;
  background: var(--navy);
  color: var(--paper);
  font: 500 0.75rem/1 var(--mono);
  transform: translateY(-180%);
}

.skip-link:focus { transform: translateY(0); }

.playground-header {
  display: grid;
  width: min(1280px, calc(100% - 48px));
  min-height: 152px;
  margin-inline: auto;
  padding-inline: 2rem;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  border-bottom: 1px solid var(--line);
}

.playground-header__brand {
  font: 700 1.5rem/1 var(--sans);
  letter-spacing: 0.08em;
  text-decoration: none;
}

.playground-header > p,
.playground-header__back,
.playground-intro__eyebrow,
.playground-intro__status,
.record-module__copy,
.playground-footer {
  font-family: var(--mono);
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.playground-header > p {
  margin: 0;
  color: var(--muted);
  font-size: 0.72rem;
}

.playground-header__back {
  justify-self: end;
  font-size: 0.68rem;
  text-decoration: none;
}

main {
  width: min(1280px, calc(100% - 48px));
  margin-inline: auto;
  padding: clamp(2rem, 3.5vw, 3.5rem) 2rem clamp(4rem, 7vw, 7rem);
}

.playground-intro {
  display: grid;
  grid-template-columns: minmax(24rem, 0.9fr) minmax(22rem, 1.1fr);
  gap: 0.75rem clamp(2rem, 6vw, 6rem);
  align-items: center;
  padding-bottom: clamp(1.75rem, 3vw, 2.75rem);
  border-bottom: 1px solid var(--navy);
}

.playground-intro__eyebrow {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--teal);
  font-size: 0.72rem;
}

.playground-intro h1 {
  max-width: none;
  margin: 0;
  font-size: clamp(2rem, 3vw, 3.15rem);
  line-height: 0.95;
  letter-spacing: -0.045em;
  white-space: nowrap;
}

.playground-intro__copy {
  max-width: 34rem;
  margin: 0 0 0.65rem;
  font-size: clamp(1rem, 1.25vw, 1.18rem);
  line-height: 1.5;
}

.playground-intro__status {
  grid-column: 2;
  display: flex;
  gap: 0.65rem;
  align-items: center;
  margin: 0;
  color: var(--muted);
  font-size: 0.66rem;
}

.playground-intro__status span {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--cyan);
}

.record-library {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) repeat(3, minmax(11rem, 0.65fr));
  gap: clamp(1.5rem, 3vw, 3rem);
  align-items: start;
  min-height: 42rem;
  padding-top: clamp(2.25rem, 4vw, 3.75rem);
}

.record-module {
  position: relative;
  display: grid;
  min-width: 0;
  margin: 0;
  color: var(--navy);
  text-decoration: none;
}

.record-module--active {
  grid-template-columns: minmax(0, 1fr);
  min-height: 35rem;
}

.record-module__sleeve {
  position: absolute;
  z-index: 0;
  top: 1.4rem;
  left: 0;
  display: grid;
  width: min(74%, 27rem);
  aspect-ratio: 1;
  padding: 1.25rem;
  border: 1px solid var(--navy);
  background:
    linear-gradient(135deg, transparent 63%, rgba(69, 191, 193, 0.14) 63%),
    rgba(237, 240, 233, 0.92);
  align-content: space-between;
  font-family: var(--mono);
}

.record-module__sleeve i,
.record-module__sleeve small {
  color: var(--muted);
  font-size: 0.62rem;
  font-style: normal;
  letter-spacing: 0.07em;
}

.record-module__sleeve b {
  font: 700 clamp(2rem, 4vw, 4rem)/0.9 var(--sans);
  letter-spacing: -0.055em;
}

.record {
  position: relative;
  z-index: 2;
  display: grid;
  width: 100%;
  aspect-ratio: 1;
  border: 1px solid rgba(237, 240, 233, 0.4);
  border-radius: 50%;
  background:
    repeating-radial-gradient(circle, transparent 0 5px, rgba(237, 240, 233, 0.08) 6px, transparent 7px),
    radial-gradient(circle at 42% 38%, #24424d, var(--navy) 52%, #07171e 100%);
  place-items: center;
  box-shadow: 0 1.25rem 2.8rem rgba(16, 42, 53, 0.16);
  transition: transform 480ms cubic-bezier(0.2, 0.7, 0.2, 1), box-shadow 480ms ease;
}

.record::after {
  position: absolute;
  width: 1.05rem;
  aspect-ratio: 1;
  border: 1px solid rgba(237, 240, 233, 0.7);
  border-radius: 50%;
  background: var(--navy);
  content: "";
}

.record--coupling {
  width: min(82%, 29rem);
  margin-left: 18%;
}

.record__label {
  display: grid;
  width: 31%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--cyan);
  color: var(--navy);
  place-content: center;
  text-align: center;
}

.record__label b { font: 700 clamp(1.25rem, 2.3vw, 2.2rem)/1 var(--sans); }
.record__label i { font: 500 0.58rem/1.5 var(--mono); font-style: normal; letter-spacing: 0.05em; }
.record__label small { font: 400 0.48rem/1 var(--mono); }

.record-module__copy {
  display: grid;
  gap: 0.45rem;
  margin-top: 1.35rem;
  font-size: 0.62rem;
  line-height: 1.5;
}

.record-module__copy strong {
  font: 700 clamp(1.35rem, 2.3vw, 2.2rem)/1 var(--sans);
  letter-spacing: -0.035em;
}

.record-module__copy > span:not(.record-module__index) {
  color: var(--muted);
}

.record-module__copy > b {
  width: max-content;
  margin-top: 0.35rem;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid var(--cyan);
  font-weight: 500;
}

.record-module--active:is(:hover, :focus-visible) .record {
  transform: translate(4%, -2%) rotate(8deg);
  box-shadow: 0 1.75rem 3.4rem rgba(16, 42, 53, 0.22);
}

.record-module--available {
  margin-top: clamp(6rem, 10vw, 10rem);
}

.record-module--available .record { width: 92%; }

.record-module--available:is(:hover, :focus-visible) .record {
  transform: translateY(-4%) rotate(-7deg);
  box-shadow: 0 1.5rem 3rem rgba(16, 42, 53, 0.2);
}

.record-module--available:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 0.75rem;
}

.record-module--active:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 0.75rem;
}

.record-module--future {
  margin-top: clamp(6rem, 10vw, 10rem);
  opacity: 0.64;
}

.record-module--future-offset { margin-top: clamp(1rem, 4vw, 4rem); }

.record-module--future .record { width: 92%; }
.record--future-cyan .record__label { background: var(--teal); color: var(--paper); }
.record--future-gold .record__label { background: var(--gold); }
.record--future-red .record__label { background: var(--red); color: var(--paper); }
.record-module--quaternary { margin-top: clamp(2rem, 5vw, 5rem); }

.playground-footer {
  display: flex;
  width: min(1280px, calc(100% - 48px));
  min-height: 7rem;
  margin-inline: auto;
  padding: 1.5rem 2rem;
  border-top: 1px solid var(--line);
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.62rem;
}

@media (prefers-reduced-motion: no-preference) {
  .record-module--active .record { animation: record-idle 16s linear infinite; }
  .record-module--active:is(:hover, :focus-visible) .record { animation-play-state: paused; }
}

@keyframes record-idle {
  to { rotate: 360deg; }
}

@media (max-width: 70rem) {
  .record-library { grid-template-columns: minmax(0, 1.25fr) minmax(13rem, 0.75fr); }
  .record-module--future-offset,
  .record-module--quaternary { grid-column: 2; }
}

@media (max-width: 48rem) {
  .playground-header,
  main,
  .playground-footer {
    width: auto;
    margin-left: 44px;
    margin-right: 16px;
  }

  .playground-header {
    min-height: 110px;
    padding-inline: 0;
    grid-template-columns: 1fr auto;
  }

  .playground-header > p { display: none; }
  main { padding-inline: 0; }
  .playground-intro { grid-template-columns: 1fr; }
  .playground-intro h1 { white-space: normal; }
  .playground-intro__status { grid-column: 1; }
  .record-library { grid-template-columns: 1fr; min-height: 0; }
  .record-module--active { min-height: 0; }
  .record-module--future,
  .record-module--available,
  .record-module--future-offset,
  .record-module--quaternary { grid-column: auto; margin-top: 2rem; }
  .record-module--future .record,
  .record-module--available .record { width: min(76%, 21rem); }
  .playground-footer { padding-inline: 0; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .record { transition: none; }
}