/* Button component — primary (blue), secondary (outline), danger (call emphasis), ghost link. */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.95em 1.9em;
  font-size: var(--fs-sm);
  font-weight: 700;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  white-space: nowrap;
  transition: transform var(--duration-fast) var(--ease-premium),
    box-shadow var(--duration-fast) var(--ease-premium),
    background-color var(--duration-fast) var(--ease-premium),
    border-color var(--duration-fast) var(--ease-premium),
    color var(--duration-fast) var(--ease-premium);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background: linear-gradient(180deg, var(--color-accent-hover), var(--color-accent));
  color: var(--color-black);
}

.btn--primary:hover {
  box-shadow: var(--shadow-blue-glow);
}

.btn--danger {
  background: linear-gradient(180deg, var(--color-red-soft), var(--color-red));
  color: var(--color-black);
}

.btn--danger:hover {
  box-shadow: var(--shadow-red-glow);
}

.btn--secondary {
  background: rgb(244 246 249 / 6%);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  color: var(--color-text);
  border-color: rgb(244 246 249 / 25%);
}

.btn--secondary:hover {
  background: rgb(244 246 249 / 12%);
  border-color: var(--color-accent);
  color: var(--color-accent-hover);
}

.btn--ghost {
  background: transparent;
  color: var(--color-accent);
  padding: 0.4em 0;
  border-radius: 0;
  position: relative;
}

.btn--ghost::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0.4);
  transform-origin: left;
  transition: transform var(--duration-fast) var(--ease-premium);
}

.btn--ghost:hover::after {
  transform: scaleX(1);
}

.btn--block {
  width: 100%;
}

.btn__icon {
  display: inline-flex;
  width: 1.1em;
  height: 1.1em;
  flex-shrink: 0;
}

.btn__icon svg {
  width: 100%;
  height: 100%;
}

@media (prefers-reduced-motion: reduce) {
  .btn:hover {
    transform: none;
  }
}