.btn-flash {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.9rem;
  min-height: 3.6rem;
  padding: 0.85rem 0.95rem 0.85rem 1.8rem;
  color: var(--mocha-deep) !important;
  text-decoration: none;
  letter-spacing: 0.01em;
  background:
    radial-gradient(circle at 18% 10%, rgba(255, 255, 255, 0.96), transparent 36%),
    linear-gradient(
      135deg,
      color-mix(in oklab, white 96%, var(--cream)) 0%,
      color-mix(in oklab, var(--cream) 88%, var(--lavender)) 52%,
      color-mix(in oklab, var(--steel) 34%, white) 100%
    );
  border: 1px solid color-mix(in oklab, var(--steel-deep) 42%, white);
  box-shadow:
    0 24px 55px -22px color-mix(in oklab, var(--mocha-deep) 72%, transparent),
    0 8px 22px -14px color-mix(in oklab, var(--steel-deep) 70%, transparent),
    inset 0 1px 0 rgba(255, 255, 255, 0.96),
    inset 0 0 0 1px rgba(255, 255, 255, 0.32);
  backdrop-filter: blur(14px) saturate(1.08);
  -webkit-backdrop-filter: blur(14px) saturate(1.08);
  transition:
    transform 260ms cubic-bezier(0.2, 0.8, 0.2, 1),
    box-shadow 260ms ease,
    border-color 260ms ease,
    filter 260ms ease;
}

.btn-flash::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(
    110deg,
    transparent 0%,
    transparent 34%,
    rgba(255, 255, 255, 0.72) 48%,
    transparent 62%,
    transparent 100%
  );
  transform: translateX(-145%);
  transition: transform 720ms cubic-bezier(0.2, 0.75, 0.2, 1);
  pointer-events: none;
}

.btn-flash::after {
  content: "";
  position: absolute;
  inset: 4px;
  z-index: -1;
  border-radius: inherit;
  border: 1px solid rgba(255, 255, 255, 0.52);
  pointer-events: none;
}

.btn-flash:hover {
  transform: translateY(-2px) scale(1.015);
  border-color: color-mix(in oklab, var(--steel-deep) 64%, white);
  box-shadow:
    0 32px 70px -26px color-mix(in oklab, var(--mocha-deep) 78%, transparent),
    0 12px 28px -16px color-mix(in oklab, var(--steel-deep) 82%, transparent),
    inset 0 1px 0 rgba(255, 255, 255, 1),
    0 0 0 1px color-mix(in oklab, var(--lavender) 36%, transparent);
  filter: brightness(1.025);
}

.btn-flash:hover::before {
  transform: translateX(145%);
}

.btn-flash svg {
  width: 2.35rem;
  height: 2.35rem;
  flex: 0 0 auto;
  padding: 0.64rem;
  border-radius: 9999px;
  color: var(--cream);
  background: linear-gradient(
    135deg,
    var(--mocha-deep) 0%,
    color-mix(in oklab, var(--mocha) 76%, var(--steel-deep)) 100%
  );
  border: 1px solid color-mix(in oklab, white 20%, transparent);
  box-shadow:
    0 8px 18px -8px color-mix(in oklab, var(--mocha-deep) 88%, transparent),
    inset 0 1px 0 rgba(255, 255, 255, 0.18);
  transition:
    transform 260ms cubic-bezier(0.2, 0.8, 0.2, 1),
    box-shadow 260ms ease;
}

.btn-flash:hover svg {
  transform: translateX(4px);
  box-shadow:
    0 10px 22px -8px color-mix(in oklab, var(--mocha-deep) 94%, transparent),
    inset 0 1px 0 rgba(255, 255, 255, 0.22);
}

.btn-flash:focus-visible {
  outline: 3px solid color-mix(in oklab, var(--steel-deep) 58%, white);
  outline-offset: 4px;
}

@media (max-width: 640px) {
  .btn-flash {
    min-height: 3.35rem;
    padding: 0.75rem 0.8rem 0.75rem 1.35rem;
    gap: 0.7rem;
  }

  .btn-flash svg {
    width: 2.1rem;
    height: 2.1rem;
    padding: 0.56rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .btn-flash,
  .btn-flash::before,
  .btn-flash svg {
    transition: none;
  }

  .btn-flash:hover {
    transform: none;
  }
}