/* =========================================================
   DIAMONDS — 10, coming next
   ========================================================= */

.diamonds {
  position: relative;
  background: var(--ink-000);
  overflow: hidden;
}

.diamonds__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  align-items: center;
  gap: clamp(2rem, 6vw, 6rem);
}

@media (max-width: 900px) {
  .diamonds__grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

/* ---------------- the gem ---------------- */

.diamonds__stage {
  position: relative;
  aspect-ratio: 1 / 1;
  display: grid;
  place-items: center;
  max-width: 460px;
  justify-self: center;
  width: 100%;
}

.diamonds__stage::before {
  content: "";
  position: absolute;
  inset: 12%;
  border-radius: 50%;
  background: radial-gradient(
    circle at 46% 40%,
    rgba(233, 217, 163, 0.14) 0%,
    rgba(91, 118, 142, 0.08) 40%,
    transparent 70%
  );
  filter: blur(24px);
}

.diamonds__facets {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  will-change: transform;
}

.diamonds__facets--inner {
  inset: 8%;
  width: 84%;
  height: 84%;
}

/* A single travelling highlight, so the drawn gem still catches light */
.diamonds__glint {
  position: absolute;
  width: 34%;
  height: 34%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 250, 235, 0.5) 0%, transparent 62%);
  filter: blur(14px);
  transform: translate(-18%, -22%);
  animation: glint 9s var(--ease-in-out) infinite;
}

@keyframes glint {
  0%,
  100% {
    transform: translate(-18%, -22%) scale(1);
    opacity: 0.55;
  }
  50% {
    transform: translate(16%, 14%) scale(1.24);
    opacity: 0.9;
  }
}

/* ---------------- copy ---------------- */

.diamonds__copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.35rem;
}

.diamonds__title {
  color: var(--bone-100);
}

.diamonds__lede {
  max-width: 48ch;
  font-size: var(--step-0);
}

.diamonds__colours {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(1rem, 2.6vw, 2.5rem);
  padding-block: 0.5rem;
}

.diamonds__colour {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-rows: auto auto;
  column-gap: 0.75rem;
  align-items: center;
}

.diamonds__swatch {
  grid-row: 1 / 3;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 50%;
  /* A gem is not a flat circle of colour: bright at the crown, dark at the
     girdle, with one specular pinprick. */
  background: radial-gradient(circle at 34% 28%, #fff 0%, var(--gem) 34%, rgba(0, 0, 0, 0.65) 100%);
  box-shadow: 0 0 0 1px rgba(237, 231, 219, 0.14), 0 6px 16px -6px var(--gem);
}

.diamonds__colour-n {
  font-family: var(--font-display);
  font-size: var(--step-1);
  line-height: 1;
  color: var(--bone-100);
}

.diamonds__colour-d {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--bone-500);
}

.diamonds__note {
  color: var(--bone-500);
  max-width: 40ch;
  line-height: 1.6;
}

/* ---------------- form ---------------- */

.diamonds__form {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  width: 100%;
  max-width: 30rem;
  margin-top: 0.25rem;
}

.diamonds__form input {
  flex: 1;
  min-width: 12rem;
  padding: 1.05em 1.35em;
  font-family: var(--font-mono);
  font-size: var(--step--2);
  letter-spacing: 0.08em;
  color: var(--bone-100);
  background: transparent;
  border: 1px solid var(--rule-strong);
  border-radius: 999px;
  transition: border-color 0.4s var(--ease-out);
}

.diamonds__form input::placeholder {
  color: var(--bone-500);
}

.diamonds__form input:focus {
  outline: none;
  border-color: var(--gold-300);
}