/* ========================================
   EfaYukacoonar - Common Header
   ======================================== */


/* ---------- 基本設定 ---------- */

:root {
  --header-height: 64px;
  --header-bg: rgba(10, 10, 16, 0.94);
  --header-border: rgba(255, 255, 255, 0.16);
  --header-text: #ffffff;
  --header-accent: #d4af37;
  --drawer-bg: #111118;
  --drawer-width: min(360px, 86vw);
  --transition-fast: 180ms ease;
  --transition-normal: 280ms ease;
}

* {
  box-sizing: border-box;
}


/* ---------- ヘッダー ---------- */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1000;

  width: 100%;
  height: var(--header-height);

  color: var(--header-text);
  background: var(--header-bg);
  border-bottom: 1px solid var(--header-border);

  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);

  transition:
    background-color var(--transition-normal),
    border-color var(--transition-normal);
}

.header-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;

  width: 100%;
  height: 100%;
  padding: 0 20px;
}

.header-left,
.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-left {
  justify-self: start;
}

.header-right {
  justify-self: end;
}


/* ---------- Efaロゴ ---------- */

.site-brand {
  color: var(--header-text);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  white-space: nowrap;

  transition:
    color var(--transition-fast),
    opacity var(--transition-fast);
}

.site-brand:hover,
.site-brand:focus-visible {
  color: var(--header-accent);
}

.brand-short {
  display: none;
}


/* ---------- 現在のエリア名 ---------- */

.current-area {
  justify-self: center;

  color: var(--header-accent);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-align: center;
  text-transform: uppercase;
}


/* ---------- ボタン ---------- */

.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;

  width: 40px;
  height: 40px;
  padding: 0;

  color: var(--header-text);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;

  cursor: pointer;
  font: inherit;

  transition:
    background-color var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast);
}

.icon-button:hover,
.icon-button:focus-visible {
  color: var(--header-accent);
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--header-border);
}

.icon-button:focus-visible,
.drawer-link:focus-visible,
.search-form input:focus-visible {
  outline: 2px solid var(--header-accent);
  outline-offset: 3px;
}


/* ---------- ハンバーガー ---------- */

.hamburger-icon {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;

  width: 22px;
}

.hamburger-icon span {
  display: block;

  width: 100%;
  height: 2px;

  background: currentColor;
  border-radius: 2px;

  transition: transform var(--transition-fast);
}


/* ---------- 検索 ---------- */

.search-container {
  position: relative;
  display: flex;
  align-items: center;
}

.search-form {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;

  display: flex;
  align-items: center;
  gap: 6px;

  width: min(300px, 80vw);
  padding: 6px;

  background: var(--drawer-bg);
  border: 1px solid var(--header-border);
  border-radius: 10px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);

  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  pointer-events: none;

  transition:
    opacity var(--transition-fast),
    visibility var(--transition-fast),
    transform var(--transition-fast);
}

.search-container.is-open .search-form {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.search-form input {
  min-width: 0;
  width: 100%;
  padding: 10px;

  color: var(--header-text);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid transparent;
  border-radius: 6px;

  font: inherit;
}

.search-form input::placeholder {
  color: rgba(255, 255, 255, 0.55);
}

.search-form button {
  width: 36px;
  height: 36px;

  color: var(--header-text);
  background: transparent;
  border: 0;
  border-radius: 6px;

  cursor: pointer;
  font-size: 1.2rem;
}

.search-form button:hover,
.search-form button:focus-visible {
  color: var(--header-accent);
  background: rgba(255, 255, 255, 0.08);
}


/* ---------- 背景オーバーレイ ---------- */

.drawer-backdrop {
  position: fixed;
  inset: 0;
  z-index: 1090;

  background: rgba(0, 0, 0, 0.7);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.drawer-backdrop.is-visible {
  opacity: 1;
}


/* ---------- サイドメニュー ---------- */

.site-drawer {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1100;

  display: flex;
  flex-direction: column;

  width: var(--drawer-width);
  height: 100dvh;
  padding: 20px;

  color: var(--header-text);
  background: var(--drawer-bg);
  border-right: 1px solid var(--header-border);
  box-shadow: 12px 0 40px rgba(0, 0, 0, 0.3);

  transform: translateX(-105%);
  visibility: hidden;

  transition:
    transform var(--transition-normal),
    visibility var(--transition-normal);
}

.site-drawer.is-open {
  transform: translateX(0);
  visibility: visible;
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;

  min-height: 44px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--header-border);
}

.drawer-title {
  color: var(--header-accent);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.drawer-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;

  padding-top: 24px;
}

.drawer-link {
  display: flex;
  align-items: center;
  justify-content: space-between;

  padding: 16px 12px;

  color: var(--header-text);
  border-radius: 8px;

  font-size: 1rem;
  text-decoration: none;

  transition:
    color var(--transition-fast),
    background-color var(--transition-fast),
    padding-left var(--transition-fast);
}

.drawer-link:hover,
.drawer-link:focus-visible {
  padding-left: 20px;
  color: var(--header-accent);
  background: rgba(255, 255, 255, 0.08);
}

.drawer-footer {
  margin-top: auto;
  padding-top: 20px;

  color: rgba(255, 255, 255, 0.5);
  border-top: 1px solid var(--header-border);

  font-size: 0.8rem;
}


/* ---------- メインコンテンツの余白 ---------- */

/*
  固定ヘッダーと本文が重ならないようにする。
  既存のページで個別設定がある場合は調整可能。
*/

main {
  padding-top: var(--header-height);
}


/* ---------- アクセシビリティ ---------- */

.sr-only {
  position: absolute;

  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;

  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}


/* ---------- スマートフォン ---------- */

@media (max-width: 600px) {
  :root {
    --header-height: 56px;
  }

  .header-inner {
    padding: 0 10px;
  }

  .brand-full {
    display: none;
  }

  .brand-short {
    display: inline;
  }

  .site-brand {
    font-size: 1.1rem;
  }

  .current-area {
    font-size: 0.85rem;
    letter-spacing: 0.08em;
  }

  .icon-button {
    width: 36px;
    height: 36px;
  }
}


/* ---------- モーション低減設定 ---------- */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}