.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast),
    transform var(--transition-fast),
    box-shadow var(--transition-base);
  min-height: 44px;
}

.btn:active {
  transform: scale(0.97);
}

.btn .icon {
  flex-shrink: 0;
}

/* Primary */
.btn-primary {
  background-color: var(--color-primary);
  color: var(--white);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  box-shadow: var(--shadow-hover);
  transform: translateY(-1px);
  color: var(--white);
}

.btn-primary:active {
  transform: translateY(0) scale(0.97);
  box-shadow: var(--shadow-sm);
}

/* Secondary */
.btn-secondary {
  background-color: transparent;
  color: var(--color-text-secondary);
  border: 1.5px solid var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-surface-alt);
  border-color: var(--color-text-muted);
  color: var(--color-text);
}

/* Ghost */
.btn-ghost {
  background-color: transparent;
  color: var(--color-text-secondary);
}

.btn-ghost:hover {
  background-color: var(--color-surface-alt);
  color: var(--color-text);
}

/* Full width variant */
.btn-block {
  width: 100%;
}

/* Disabled */
.btn:disabled,
.btn[disabled] {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}