/* =====================================================
   Layout: Header
===================================================== */
.header {
  position: fixed; inset-block-start: 0; inset-inline: 0; z-index: 200;
  background: var(--clr-sub);
  transition: box-shadow var(--trans);
}
.header.is-scrolled { box-shadow: 0 2px 16px rgba(136,104,154,.07); }

.header__inner {
  position: relative;
  display: flex; align-items: center;
  height: var(--header-h);
  max-width: 1400px; margin: 0 auto; padding: 0 72px;
}
.header__logo { position: absolute; left: 16px; top: 50%; transform: translateY(-50%); }
.header__logo img { height: 44px; width: auto; }

.header__nav {
  position: absolute; right: 0; top: 50%; transform: translateY(-50%);
  display: flex; align-items: center; gap: 48px;
}
.nav__list { display: flex; align-items: center; gap: 56px; }
.header__cta { font-size: 20px; padding: 10px 44px; white-space: nowrap; }
.nav__list a { font-family: var(--ff-en); font-size: 20px; color: var(--clr-text); position: relative; padding-bottom: 2px; }
.nav__list a::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 1px; background: var(--clr-main); transform: scaleX(0); transition: transform var(--trans); }
.nav__list a:hover::after { transform: scaleX(1); }
.nav__list a:hover { opacity: 1; }

/* Nav hover text swap (PC) */
.nav__list a[data-hover] { position: relative; }
.nav__list a[data-hover]::before {
  content: attr(data-hover);
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--ff-ja); font-size: 16px;
  white-space: nowrap; opacity: 0;
  transition: opacity var(--trans);
  pointer-events: none;
  color: var(--clr-text);
}
.nav__list a[data-hover]:hover { color: transparent !important; opacity: 1; }
.nav__list a[data-hover]:hover::before { opacity: 1; }
@media (max-width: 960px) {
  .nav__list a[data-hover]:hover { color: inherit !important; }
  .nav__list a[data-hover]:hover::before { display: none; }
}

/* Hamburger */
.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; padding: 6px; margin-left: auto; }
.hamburger span { display: block; width: 22px; height: 1.5px; background: var(--clr-main); border-radius: 2px; transition: transform var(--trans), opacity var(--trans); }
.hamburger.is-open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.is-open span:nth-child(2) { opacity: 0; }
.hamburger.is-open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Mobile Nav */
.mobile-nav { display: none; background: var(--clr-sub); padding: 0 28px 28px; border-top: 1px solid rgba(136,104,154,.15); }
.mobile-nav.is-open { display: flex; flex-direction: column; min-height: calc(100vh - var(--header-h)); }
.mobile-nav ul { display: flex; flex-direction: column; gap: 18px; padding-top: 20px; }
.mobile-nav a { font-family: var(--ff-en); font-size: 15px; }

/* Responsive */
@media (max-width: 960px) {
  .header__inner { padding: 0 28px; }
  .header__nav, .header__cta { display: none; }
  .hamburger { display: flex; }
}
@media (max-width: 430px) {
  .header__logo img { height: 32px; }
  .mobile-nav .btn--primary { margin-top: 24px; }
  .mobile-nav .btn--primary,
  .mobile-nav .btn--pink { font-size: 22px; padding: 12px 72px; }
}