.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  height: 44px;
  padding: 0 var(--space-12);
  border-radius: var(--radius-8);
  border: 1px solid transparent;
  font-weight: var(--weight-700);
  cursor: pointer;
  user-select: none;
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 14px;
  line-height: 44px;
  transition: background 0.15s ease;
}
.btn:disabled,
.btn.is-disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
.btn--primary {
  background: var(--color-btn-main--default);
  color: #fff;
}
.btn--ghost {
  background: var(--color-btn-second--default);
  box-shadow: var(--shadow-xs);
}
/* Hover/active: в UI-kit можно форсить классами */
.btn:hover,
.btn.is-hover {
  filter: brightness(1.03);
}
.btn--primary:hover,
.btn--primary.is-hover {
  background: var(--color-btn-main--hover);
  filter: none;
}
.btn:active,
.btn.is-active {
  transform: translateY(1px);
}
.btn:focus-visible,
.btn.is-focus {
  box-shadow: var(--focus-ring);
}
.btn--primary:disabled,
.btn--primary.is-disabled {
  background: var(--color-btn-main--disabled);
  opacity: 1;
}
.btn--linear {
  background: var(--color-bg);
  border: 2px solid #171717;
}
.btn--linear-white-tr {
  background: transparent;
  border: 2px solid #fff;
  color: #fff;
}
.btn--linear-black-tr {
  background: transparent;
  border: 2px solid #171717;
  color: #171717;
}
@media(hover: hover) {
.btn--linear-black-tr:hover,
.btn--linear-white-tr:hover {
  border-color: var(--color-btn-main--default);
  color: var(--color-btn-main--default);
}
.btn--linear:hover {
  opacity: 0.7;
}
.btn--glass:hover {
  background: rgba(255, 255, 255, 0.4);
}
.btn--soft:hover,
.btn--soft.is-hover {
  background: linear-gradient(
    180deg,
    #ffffff 0%,
    rgba(255, 255, 255, 0.94) 72%,
    rgba(236, 236, 236, 0.8) 100%
  );
  border-top-color: #fff;
  border-bottom-color: rgba(160, 160, 160, 0.55);
  filter: none;
}
}
.btn--glass {
  background: rgba(255, 255, 255, 0.15);
  font-weight: 700;
  color: #FFFFFF;
  backdrop-filter: blur(10px);
  box-shadow: inset 4px 1px 0px -3px rgba(255, 255, 255, 0.8), inset 1px 4px 0px -3px rgba(255, 255, 255, 0.8), inset -3px -4px 0px -4px rgba(255, 255, 255, 0.8), 0 15px 35px rgba(0, 0, 0, 0.2);
}

/* Glass soft: почти белый корпус, серый только нижний край */
.btn--soft {
  position: relative;
  color: #171717;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.95) 0%,
    rgba(255, 255, 255, 0.88) 72%,
    rgba(242, 242, 242, 0.72) 100%
  );
  -webkit-backdrop-filter: blur(30px);
  backdrop-filter: blur(30px);
  border: 1px solid transparent;
  border-top-color: #ffffff;
  border-right-color: rgba(255, 255, 255, 0.65);
  border-bottom-color: rgba(180, 180, 180, 0.55);
  border-left-color: rgba(255, 255, 255, 0.65);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.12);
}
.btn-to-catalog {
  display: flex;
  height: 52px;
  max-width: 290px;
  margin: 20px auto 0;
  padding: 0 20px;
  gap: 10px;
  font-size: 16px;
  line-height: normal;
}
.btn-to-catalog svg {
  flex-shrink: 0;
  width: 18px;
  height: 15px;
}