.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  font-family: var(--font);
  font-size: 13.5px;
  font-weight: 500;
  line-height: 1;
  border: 1px solid transparent;
  border-radius: var(--r-md);
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
  transition: background var(--transition), color var(--transition),
              border-color var(--transition), box-shadow var(--transition);
  -webkit-user-select: none;
  user-select: none;
}

.btn:focus-visible {
  outline: 2px solid var(--brand-primary);
  outline-offset: 2px;
}

.btn:disabled,
.btn[disabled] {
  opacity: .45;
  cursor: not-allowed;
  pointer-events: none;
}

/* Variants */
.btn-primary {
  background: var(--brand-primary);
  color: #fff;
  border-color: var(--brand-primary);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: var(--brand-primary-hover);
  border-color: var(--brand-primary-hover);
  color: #fff;
}

.btn-secondary {
  background: #fff;
  color: var(--gray-700);
  border-color: var(--gray-200);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--gray-50);
  border-color: var(--gray-300);
  color: var(--gray-900);
}

.btn-danger {
  background: var(--danger-bg);
  color: var(--danger-text);
  border-color: transparent;
}

.btn-danger:hover {
  background: #fecaca;
  color: var(--danger-text);
}

.btn-ghost {
  background: transparent;
  color: var(--gray-500);
  border-color: transparent;
}

.btn-ghost:hover {
  background: var(--gray-100);
  color: var(--gray-700);
}

.btn-ghost-dark {
  background: rgba(255, 255, 255, .1);
  color: rgba(253, 240, 213, .85);
  border-color: rgba(255, 255, 255, .15);
}

.btn-ghost-dark:hover {
  background: rgba(255, 255, 255, .2);
  color: #fdf0d5;
}

.btn-dark {
  background: var(--brand-dark);
  color: #fff;
  border-color: var(--brand-dark);
}

.btn-dark:hover {
  background: var(--brand-dark-hover);
  color: #fff;
}

/* Sizes */
.btn-sm {
  padding: 5px 10px;
  font-size: 12.5px;
  border-radius: var(--r-sm);
  gap: 4px;
}

.btn-lg {
  padding: 11px 20px;
  font-size: 15px;
  border-radius: var(--r-lg);
}

/* Icon-only button */
.btn-icon {
  padding: 7px;
  aspect-ratio: 1;
}

.btn-icon.btn-sm {
  padding: 5px;
}

/* Button with icon inherits gap from .btn */
.btn i,
.btn svg {
  flex-shrink: 0;
  font-size: 1em;
  width: 1em;
  height: 1em;
}