/* Button #1. Tonal gradient, pointer light, and a quiet five-second sheen. */
.button-1 {
  --x: 50%;
  --y: 50%;
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  min-height: 54px;
  padding: 16px 26px;
  border: 0;
  border-radius: 999px;
  color: var(--button-ink);
  background: linear-gradient(115deg, var(--button-start), var(--button-mid) 42%, var(--button-end));
  font: inherit;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.4;
  cursor: pointer;
  transition: transform .3s;
}
.button-1::before,
.button-1::after {
  content: '';
  position: absolute;
  z-index: -1;
  inset: 0;
  pointer-events: none;
}
.button-1::before {
  background: radial-gradient(ellipse 170px 110px at var(--x) var(--y), color-mix(in srgb, var(--button-highlight) 68%, transparent), transparent 100%);
  opacity: 0;
  transition: opacity .45s;
}
.button-1::after {
  background: linear-gradient(110deg, transparent 25%, color-mix(in srgb, var(--button-sheen) 30%, transparent) 50%, transparent 75%);
  opacity: 0;
}
.button-1:not(:hover):not(:focus-visible):not(:disabled)::after {
  animation: button-1-sheen 5s linear infinite;
}
@keyframes button-1-sheen {
  0%, 38% { transform: translateX(-115%); opacity: 0; }
  48% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateX(115%); opacity: 0; }
}
.button-1:is(:hover, :focus-visible)::before { opacity: 1; }
.button-1:active { transform: translateY(1px); }
.button-1:focus-visible { outline: 2px solid var(--brand1); outline-offset: 5px; }
.button-1:disabled { opacity: .45; cursor: not-allowed; }
.button-1:disabled::before { opacity: 0; }
@media (prefers-reduced-motion: reduce) {
  .button-1, .button-1::before { transition: none; }
  .button-1::after { animation: none !important; }
  .button-1::before { background: radial-gradient(ellipse at center, color-mix(in srgb, var(--button-highlight) 35%, transparent), transparent); }
}