/* ================================
   Button Component
   ボタンコンポーネントとバリエーション
================================ */

/* ----- Base Button ----- */
.btn {
  /* Display & Box Model */
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  padding: 1.3rem var(--space-md);

  /* Border & Background */
  border-radius: var(--radius-pill);

  /* Typography */
  font-size: var(--fz-sm);
  font-weight: 600;
  line-height: 1;
  text-align: center;

  /* Other */
  transition: opacity 0.2s ease;
}

.btn span {
  /* Display & Box Model */
  margin-left: var(--space-sm);
}

.btn:hover {
  /* Other */
  opacity: 0.8;
}

/* ----- Button Inner ----- */
.btn__inner {
  /* Display & Box Model */
  width: 100%;

  /* Typography */
  text-align: center;
}

.btn__inner h3 {
  /* Display & Box Model */
  margin-bottom: var(--space-md);
}

/* ----- Button Icon ----- */
.btn__icon {
  /* Display & Box Model */
  display: inline-block;
  width: 1.2em;
  height: auto;

  /* Other */
  transition: transform 0.2s ease;
}

.btn:hover .btn__icon,
.btn:focus .btn__icon {
  transform: translateX(4px);
}

/* ----- Button Variants ----- */
.btn--primary {
  /* Border & Background */
  background: var(--color-primary);

  /* Typography */
  color: var(--color-bg);
}

.btn--primary:hover,
.btn--primary:focus {
  color: var(--color-bg);
}

.btn--secondary {
  /* Border & Background */
  background: var(--color-secondary);

  /* Typography */
  color: var(--color-bg);
}

.btn--outline {
  /* Border & Background */
  background: var(--color-bg);
  border: 2px solid var(--color-primary);

  /* Typography */
  color: var(--color-primary);
}

.btn--outline:hover,
.btn--outline:focus {
  color: var(--color-primary);
}