/* ========== ヘッダーの基本スタイル（PC向け） ========== */
.header {
  width: 132rem;
  height: 7rem;
  margin: 0 auto;
  display: flex;
  padding: 0 6rem 0 6rem;
  background-color: var(--color-white);
  border-radius: 50rem;
  box-shadow: 0 0.4rem 0.4rem rgba(0, 0, 0, 0.15);
  position: relative;
  z-index: 2;
}

.header__logo img {
  margin: 0.6rem 0 0 0;
  width: 11.955rem;
  height: 5.8rem;
}

.header__nav {
  margin: 1.3rem 0 0 auto;
  display: flex;
  height: 4.3rem;
}

.header__nav-list {
  margin: 1.2rem 0 0 0;
  display: flex;
  height: 1.6rem;
  gap: 2.8rem;
  list-style: none;
  padding: 0;
}

.header__nav-link {
  text-decoration: none;
  color: var(--color-text-primary);
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 700;
  font-size: 1.6rem;
  line-height: 100%;
  letter-spacing: 0;
  vertical-align: middle;
  position: relative;
  transition: color 0.3s ease;
}

.header__nav-link::after {
  content: "";
  position: absolute;
  bottom: -0.2rem;
  left: 0;
  width: 0;
  height: 0.2rem;
  background-color: var(--color-primary-lighter);
  transition: width 0.3s ease;
}

.header__nav-link:hover {
  color: var(--color-primary-lighter);
}

.header__nav-link:hover::after {
  width: 100%;
}

.header__nav-login {
  display: block;
  margin: 0 0 0 4rem;
}

.header__nav-login-button {
  width: 13.9rem;
  height: 4.3rem;
  padding: 0;
  border: 0.2rem solid var(--color-primary);
  border-radius: 99.9rem;
  color: var(--color-primary);
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 700;
  font-size: 1.854rem;
  line-height: 1;
  vertical-align: middle;
  text-decoration: none;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.header__nav-login-button::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    var(--color-primary),
    transparent
  );
  transition: left 0.3s ease;
  z-index: 1;
}

.header__nav-login-button:hover::before {
  left: 100%;
}

.header__nav-login-button:hover {
  background-color: var(--color-primary);
  color: white;
}

.header__nav-login-button span {
  position: relative;
  z-index: 2;
}

/* ========== ログイン状態のヘッダースタイル ========== */
.header__nav-logged-in {
  display: flex;
  align-items: center;
  gap: 1.6rem;
  margin: 0 0 0 4rem;
}

.header__cart {
  position: relative;
}

.header__cart-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 4.4rem;
  height: 4.4rem;
  background-color: #f5f5f5;
  border-radius: 0.8rem;
  text-decoration: none;
  transition: background-color 0.3s ease;
}

.header__cart-link:hover {
  background-color: #e0e0e0;
}

.header__cart-icon {
  position: relative;
  color: #333;
}

.header__cart-count {
  position: absolute;
  top: -0.8rem;
  right: -0.8rem;
  background-color: #ff4444;
  color: white;
  font-size: 1.2rem;
  font-weight: 700;
  min-width: 1.8rem;
  height: 1.8rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.header__mypage {
  display: flex;
  align-items: center;
}

.header__mypage-button {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.8rem 1.6rem;
  background-color: white;
  border: 0.2rem solid #e0e0e0;
  border-radius: 2.4rem;
  text-decoration: none;
  color: #333;
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 700;
  font-size: 1.4rem;
  transition: all 0.3s ease;
}

.header__mypage-button:hover {
  background-color: #f5f5f5;
  border-color: #ccc;
}

.header__mypage-icon {
  color: #333;
  display: flex;
  align-items: center;
  justify-content: center;
}

.header__mypage-text {
  color: #333;
}

/* ハンバーガーはPCでは非表示 */
.header__menu-icon {
  display: none;
}

/* ========== SP表示（〜768px = 768px） ========== */
@media screen and (max-width: 768px) {
  .header {
    width: 36.9rem;
    height: 5.4rem;
    margin: 0 auto;
    padding: 1.5rem 2.4rem;
    background-color: var(--color-white);
    border-radius: 50rem;
    box-shadow: 0 0.4rem 0.4rem rgba(0, 0, 0, 0.15);
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0;
  }

  .header__logo {
    display: block;
    margin: 0;
  }

  .header__logo img {
    width: 8.2rem;
    height: auto;
    margin: 0;
  }

  .header__nav,
  .header__nav-login {
    display: none;
  }

  /* 独立したハンバーガーメニュー */
  .header__hamburger-standalone,
  .header__hamburger {
    display: block;
    width: 2.5rem;
    height: 2.6rem;
    cursor: pointer;
    position: absolute;
    top: 4.5rem;
    right: 3.8rem;
    z-index: 1002;
  }

  .header__hamburger-standalone::before,
  .header__hamburger-standalone::after,
  .header__hamburger-standalone span,
  .header__hamburger::before,
  .header__hamburger::after,
  .header__hamburger span {
    content: "";
    position: absolute;
    left: 0rem;
    width: 2.8rem;
    height: 0.2rem;
    background-color: var(--color-primary-lighter);
    transition: all 0.3s ease;
    pointer-events: none;
  }

  .header__hamburger-standalone::before,
  .header__hamburger::before {
    top: 0.3rem;
  }

  .header__hamburger-standalone span,
  .header__hamburger span {
    top: 0.9rem;
  }

  .header__hamburger-standalone::after,
  .header__hamburger::after {
    top: 1.5rem;
  }

  /* ハンバーガーメニューのアニメーション */
  .header__hamburger-standalone.active::before,
  .header__hamburger-standalone.active::after,
  .header__hamburger-standalone.active span,
  .header__hamburger.active::before,
  .header__hamburger.active::after,
  .header__hamburger.active span {
    background-color: #fff;
  }

  .header__hamburger-standalone.active::before,
  .header__hamburger.active::before {
    transform: rotate(45deg) translate(0.5rem, 0.3rem);
  }

  .header__hamburger-standalone.active span,
  .header__hamburger.active span {
    opacity: 0;
  }

  .header__hamburger-standalone.active::after,
  .header__hamburger.active::after {
    transform: rotate(-45deg) translate(0.5rem, -0.3rem);
  }

  /* オーバーレイメニュー */
  .header__overlay-menu {
    position: fixed;
    top: 0rem;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-primary);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: clip-path 0.5s ease-out;
    clip-path: circle(0 at var(--menu-x, 90%) var(--menu-y, 3.5rem));
    will-change: clip-path, opacity;
  }

  .header__overlay-menu.active {
    opacity: 1;
    visibility: visible;
    clip-path: circle(150% at var(--menu-x, 90%) var(--menu-y, 3.5rem));
  }

  /* 閉じるアニメーション（フェードせず収縮） */
  .header__overlay-menu.closing {
    opacity: 1;
    visibility: visible;
    clip-path: circle(0 at var(--menu-x, 90%) var(--menu-y, 3.5rem));
  }

  .header__overlay-content {
    position: absolute;
    top: 0rem;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
  }

  .header__overlay-nav {
    text-align: center;
  }

  .header__overlay-nav-list {
    list-style: none;
    padding: 0;
    margin: 0 0 4.2rem 0;
    border: 0; /* 囲い線を無効化 */
    box-shadow: none; /* 囲い影を無効化 */
    background: transparent; /* 背景の囲い感を無効化 */
  }

  .header__overlay-nav-item {
    margin-bottom: 2.2rem;
  }

  /* メニュー項目のフェードイン（カート・マイページの後に表示） */
  .header__overlay-nav-item {
    opacity: 0;
    transform: translateX(-1.6rem);
    transition: opacity 0.35s ease, transform 0.35s ease;
  }
  .header__overlay-menu.active .header__overlay-nav-item {
    opacity: 1;
    transform: translateX(0);
  }
  .header__overlay-menu.active .header__overlay-nav-item:nth-child(1) {
    transition-delay: 0.15s;
  }
  .header__overlay-menu.active .header__overlay-nav-item:nth-child(2) {
    transition-delay: 0.2s;
  }
  .header__overlay-menu.active .header__overlay-nav-item:nth-child(3) {
    transition-delay: 0.25s;
  }
  .header__overlay-menu.active .header__overlay-nav-item:nth-child(4) {
    transition-delay: 0.3s;
  }
  .header__overlay-menu.active .header__overlay-nav-item:nth-child(5) {
    transition-delay: 0.35s;
  }

  .header__overlay-nav-link {
    color: var(--color-white);
    font-size: 2rem;
    font-weight: 700;
    text-decoration: none;
    transition: color 0.3s ease;
    display: inline-block;
    padding: 0.2rem 0; /* ヒット領域を確保 */
    -webkit-tap-highlight-color: transparent; /* モバイルのタップハイライト除去 */
  }

  .header__overlay-nav-link:hover {
    color: var(--color-primary);
  }

  /* フォーカス可視化の見た目を控えめに（下線のみ） */
  .header__overlay-nav-link:focus {
    outline: none;
  }
  .header__overlay-nav-link:focus-visible {
    outline: none;
    text-decoration: underline;
    text-underline-offset: 0.2em;
  }
  .header__overlay-nav-link:active {
    background: transparent;
  }

  .header__overlay-login-button {
    display: inline-block;
    height: 4.4rem;
    background-color: var(--color-white);
    color: var(--color-primary);
    font-size: 2.4rem;
    font-weight: 700;
    padding: 0.4rem 3rem;
    border-radius: 99.9rem;
    text-decoration: none;
    transition: background-color 0.3s ease;
  }

  .header__overlay-login-button:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
  }

  .header__overlay-register {
    margin-top: 1.8rem;
  }

  /* ボタン（ログイン・登録）も左から順にスライド＋フェードイン */
  .header__overlay-login,
  .header__overlay-register {
    opacity: 0;
    transform: translateX(-1.6rem);
    transition: opacity 0.35s ease, transform 0.35s ease;
  }
  .header__overlay-menu.active .header__overlay-login {
    opacity: 1;
    transform: translateX(0);
    transition-delay: 0.4s; /* メニュー項目(最大0.35s)の後に続く */
  }
  .header__overlay-menu.active .header__overlay-register {
    opacity: 1;
    transform: translateX(0);
    transition-delay: 0.45s;
  }

  .header__overlay-register-button {
    display: inline-flex;
    height: 5.6rem;
    align-items: center;
    gap: 1rem;
    background: linear-gradient(to left, #f48c41, #fe6c03);
    color: var(--color-white);
    font-size: 2.4rem;
    font-weight: 500;
    padding: 1.5rem 3rem;
    border-radius: 99.9rem;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    border: 0.2rem solid var(--color-white);
    z-index: 3;
  }

  .header__overlay-register-button:hover {
    filter: brightness(1.05);
    transform: translateY(-0.1rem);
  }

  /* ========== ログイン状態のオーバーレイスタイル ========== */
  .header__overlay-logged-in {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-bottom: 4.2rem;
  }

  .header__overlay-cart-button,
  .header__overlay-mypage-button {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    background-color: var(--color-white);
    color: var(--color-primary);
    font-size: 2rem;
    font-weight: 700;
    padding: 1.2rem 2.4rem;
    border-radius: 99.9rem;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 0.2rem solid var(--color-white);
  }

  .header__overlay-cart-button:hover,
  .header__overlay-mypage-button:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
  }

  .header__overlay-cart-icon,
  .header__overlay-mypage-icon {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .header__overlay-cart-count {
    position: absolute;
    top: -0.8rem;
    right: -0.8rem;
    background-color: #ff4444;
    color: white;
    font-size: 1.2rem;
    font-weight: 700;
    min-width: 1.8rem;
    height: 1.8rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
  }

  /* ログイン状態のオーバーレイ要素のアニメーション（マイページが最初、カートがその次） */
  .header__overlay-cart,
  .header__overlay-mypage {
    opacity: 0;
    transform: translateX(-1.6rem);
    transition: opacity 0.35s ease, transform 0.35s ease;
  }
  .header__overlay-menu.active .header__overlay-mypage {
    opacity: 1;
    transform: translateX(0);
    transition-delay: 0.05s;
  }
  .header__overlay-menu.active .header__overlay-cart {
    opacity: 1;
    transform: translateX(0);
    transition-delay: 0.1s;
  }

  /* ハンバーガーメニューのアニメーション */
  .header__menu-icon.active::before {
    transform: rotate(45deg) translate(0.55rem, 0.55rem);
  }

  .header__menu-icon.active span {
    opacity: 0;
  }

  .header__menu-icon.active::after {
    transform: rotate(-45deg) translate(0.55rem, -0.55rem);
  }
}