/* ===== HEADER ===== */
.site-header {
  width: 100%;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: clamp(64px, 6vw, 80px);
  background: #333;
  z-index: var(--z-header, 1000);
}

.site-header__inner {
  max-width: 1400px;
  width: 100%;
  height: 100%;
  margin: 0 auto;
  padding: 0 clamp(12px, 4vw, 40px);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-header__logo {
  font-size: clamp(1rem, 2.5vw, 2rem);
  font-weight: bold;
  color: var(--light-text);
}

/* ハンバーガーはPCでは非表示 */
body.no-scroll {
  overflow: hidden;
}

.site-header__nav-toggle {
  display: none;
  /* モバイルのみ表示 */
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 0;
  background: transparent;
  cursor: pointer;
  color: var(--light-text);
}

.site-header__nav-toggle__bar {
  height: 2px;
  background: #fff;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.site-header__nav-drawer__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  z-index: var(--z-overlay, 900);
}

.site-header__nav-list {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  gap: clamp(12px, 2vw, 25px);
}

.site-header__nav-link {
  color: var(--light-text);
  text-decoration: none;
  font-size: clamp(0.9rem, 1.4vw, 1.2rem);
  transition: color 0.3s;
  color: rgba(255,255,255,1);
  font-weight: 500;
  border-bottom: none;
  cursor: pointer;
  pointer-events: auto;
}

.site-header__nav-link:hover {
  color: var(--main-yellow-deep);
}

/* Desktop（1025px〜1439px） */
@media (min-width: 1025px) and (max-width: 1439px) {}

/* Tablet（768px〜1023px） */
@media (min-width: 768px) and (max-width: 1023px) {}

/* Mobile（〜767px） */
@media (max-width: 767px) {

  /* ===== HEADER ===== */
  .site-header__inner {
    gap: 8px;
    overflow: visible;
  }

  .site-header__logo {
    flex: 0 1 auto;   
    min-width: 0; 
    max-width: calc(100% - 52px); 
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: flex;
    align-items: center;
    line-height: 1;
    height: auto;
  }

  .site-header__nav-drawer__overlay {
    background: rgba(0, 0, 0, 0.25);
  }

  .site-header__nav {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    max-width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transform: translateX(100%);
    transition: transform 0.25s ease;
    z-index: var(--z-drawer, 1100);
    padding: 24px;
    box-sizing: border-box;
    display: flex;
    justify-content: center;
    align-items: center;
    pointer-events: auto;
  }

  .site-header__nav-toggle {
    position: relative;
    width: 32px;
    height: 32px;
    border: 0;
    background: transparent;
    color: #fff;
    cursor: pointer;
    z-index: var(--z-toggle, 1200);
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    align-self: center;
    overflow: visible;
  }

  .site-header__nav-toggle__bar {
    position: absolute;
    right: 6px;
    width: 18px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: all 0.3s ease;
    transform-origin: right center;
    margin-top: -1px;
  }

  .site-header__nav-toggle__bar:nth-child(1) {
    top: 9px;
  }

  .site-header__nav-toggle__bar:nth-child(2) {
    top: 15px;
  }

  .site-header__nav-toggle__bar:nth-child(3) {
    top: 21px;
  }

  .site-header__nav-list {
    flex-direction: column;
    align-items: center;
    max-width: 260px;
    margin: 0 auto;
  }

  .site-header__nav-link {
    display: block;
    width: 100%;
    padding: 12px 2px;
    color: rgba(255,255,255,1);
    font-weight: 500;
    border-bottom: 1px solid rgba(255,255,255,0.15);
    cursor: pointer;
    pointer-events: auto;
  }

  /* 開いたときの状態 */
  body.nav-open .site-header__nav {
    transform: translateX(0);
    box-sizing: border-box;
  }

  body.nav-open .site-header__nav-drawer__overlay {
    opacity: 1;
    pointer-events: auto;
  }

  /* ハンバーガー → × に変形 */
  body.nav-open .site-header__nav-toggle__bar {
    width: 18px;
    right: auto;
    left: 50%;
    transform-origin: center;
  }
  
  body.nav-open .site-header__nav-toggle__bar:nth-child(1) {
    top: 15px;
    transform: translateX(-50%) rotate(45deg);
  }
  
  body.nav-open .site-header__nav-toggle__bar:nth-child(2) {
    opacity: 0;
  }
  
  body.nav-open .site-header__nav-toggle__bar:nth-child(3) {
    top: 15px;
    transform: translateX(-50%) rotate(-45deg);
  }
  
  /* ×変形時の見切れ防止 */
  body.nav-open .site-header__nav-toggle {
    overflow: visible;
  }
  
  /* ヘッダー全体の見切れ防止 */
  body.nav-open .site-header,
  body.nav-open .site-header__inner {
    overflow: visible;
  }

}