/* ヘッダー。ロゴ・主ナビ・ユーティリティ(マイページ/カート)を 1 本の nav で出し、
   狭い画面では同じ nav を全画面ドロワーにする。 */
.c-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--se-paper);
  border-bottom: var(--se-rule);
}

.c-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--se-space-5);
  min-height: var(--se-header-h);
}

/* --- ロゴ --- */
.c-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--se-space-3);
  flex-shrink: 0;
}

.c-logo__mark {
  width: 28px;
  height: 28px;
}

.c-logo__text {
  display: grid;
  line-height: 1.2;
}

.c-logo__name {
  font-family: var(--se-font-en);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.c-logo__sub {
  font-family: var(--se-font-en);
  font-size: 9px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--se-ink-sub);
}

/* --- ナビ --- */
.c-nav {
  display: flex;
  align-items: center;
  gap: var(--se-space-7);
  margin-left: auto;
}

.c-nav__list {
  display: flex;
  align-items: center;
  gap: var(--se-space-6);
}

.c-nav__item {
  position: relative;
}

.c-nav__link {
  display: inline-flex;
  align-items: center;
  gap: var(--se-space-2);
  padding-block: var(--se-space-2);
  font-size: var(--se-text-sm);
  letter-spacing: 0.1em;
  border-bottom: 1px solid transparent;
  white-space: nowrap;
}

.c-nav__link:hover,
.c-nav__link.is-active {
  color: var(--se-ink);
  border-bottom-color: var(--se-ink);
}

.c-nav__icon {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
}

.c-nav__caret {
  width: 10px;
  height: 10px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  transition: transform 0.2s;
}

.c-nav__item.is-open .c-nav__caret {
  transform: rotate(180deg);
}

/* ドロワー専用の語尾(「マイページ（ログイン）」「カートを見る」)。PC では隠す */
.c-nav__suffix {
  display: none;
}

.c-nav__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding-inline: 5px;
  background: var(--se-ink);
  color: var(--se-paper);
  font-family: var(--se-font-en);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0;
  line-height: 1;
}

.c-nav__badge[data-count="0"] {
  background: transparent;
  color: var(--se-ink-sub);
  box-shadow: inset 0 0 0 1px var(--se-line);
}

/* --- ドロップダウン(PC) --- */
.c-nav__dropdown {
  position: absolute;
  top: 100%;
  left: calc(var(--se-space-4) * -1);
  min-width: 240px;
  padding-block: var(--se-space-2);
  background: var(--se-surface);
  border: var(--se-rule);
  box-shadow: var(--se-pop-shadow);
  visibility: hidden;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 0.15s, transform 0.15s, visibility 0.15s;
}

.c-nav__item.is-open .c-nav__dropdown {
  visibility: visible;
  opacity: 1;
  transform: none;
}

.c-nav__sublink {
  display: block;
  padding: var(--se-space-3) var(--se-space-4);
  font-size: var(--se-text-sm);
  letter-spacing: 0.08em;
}

.c-nav__sublink:hover,
.c-nav__sublink.is-active {
  background: var(--se-paper);
  color: var(--se-ink);
}

/* --- トグル(狭い画面のみ) --- */
.c-header__toggle {
  display: none;
  position: relative;
  width: 44px;
  height: 44px;
  margin-right: -10px;
}

.c-header__toggle span {
  position: absolute;
  left: 11px;
  right: 11px;
  height: 1px;
  background: var(--se-ink);
  transition: transform 0.2s, top 0.2s;
}

.c-header__toggle span:nth-child(1) {
  top: 18px;
}

.c-header__toggle span:nth-child(2) {
  top: 25px;
}

.c-header__toggle[aria-expanded="true"] span:nth-child(1) {
  top: 22px;
  transform: rotate(45deg);
}

.c-header__toggle[aria-expanded="true"] span:nth-child(2) {
  top: 22px;
  transform: rotate(-45deg);
}

@media (max-width: 899px) {
  .c-header__toggle {
    display: block;
  }

  .c-nav {
    position: fixed;
    inset: var(--se-header-h) 0 0 0;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    margin: 0;
    padding: var(--se-space-4) var(--se-gutter) var(--se-space-8);
    overflow-y: auto;
    background: var(--se-paper);
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.2s, visibility 0.2s;
  }

  .c-header.is-menu-open .c-nav {
    visibility: visible;
    opacity: 1;
  }

  .c-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .c-nav__list + .c-nav__list {
    margin-top: var(--se-space-5);
    border-top: var(--se-rule-strong);
  }

  .c-nav__item {
    border-bottom: var(--se-rule);
  }

  .c-nav__link {
    display: flex;
    justify-content: flex-start;
    width: 100%;
    padding-block: var(--se-space-4);
    font-size: var(--se-text);
    border-bottom: 0;
  }

  .c-nav__link:hover,
  .c-nav__link.is-active {
    border-bottom-color: transparent;
    color: var(--se-accent);
  }

  .c-nav__suffix {
    display: inline;
  }

  .c-nav__caret,
  .c-nav__badge {
    margin-left: auto;
  }

  .c-nav__dropdown {
    position: static;
    min-width: 0;
    max-height: 0;
    padding: 0;
    overflow: hidden;
    border: 0;
    box-shadow: none;
    background: transparent;
    visibility: visible;
    opacity: 1;
    transform: none;
    transition: max-height 0.25s;
  }

  .c-nav__item.is-open .c-nav__dropdown {
    max-height: 320px;
  }

  .c-nav__sublink {
    padding: var(--se-space-3) var(--se-space-4);
    color: var(--se-ink-sub);
  }
}