/**
 * Header Styles - Cocoon Theme Compatible Version
 * ハンバーガーメニュー - Cocoon対策版（確実に動作）
 *
 * @package KairiLab
 * @version 6.0.0 - Cocoon Compatible
 */

/* ===== ヘッダー基本（Cocoonより優先） ===== */
.site-header {
  position: sticky !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  z-index: 99999 !important;
  background: rgba(255, 255, 255, 0.98) !important;
  backdrop-filter: blur(20px) !important;
  -webkit-backdrop-filter: blur(20px) !important;
  border-bottom: 0.5px solid rgba(0, 0, 0, 0.08) !important;
  width: 100% !important;
}

.header-container {
  max-width: 1400px !important;
  margin: 0 auto !important;
  padding: 0 24px !important;
  height: 64px !important;
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
}

/* ===== ロゴ ===== */
.site-logo {
  font-size: 16px !important;
  font-weight: 400 !important;
  color: #1a1a1a !important;
  text-decoration: none !important;
  z-index: 100001 !important;
  white-space: nowrap !important;
  position: relative !important;
}

/* ===== デスクトップナビ ===== */
.desktop-nav {
  display: none !important;
}

.desktop-nav ul {
  display: flex !important;
  gap: 32px !important;
  list-style: none !important;
  margin: 0 !important;
  padding: 0 !important;
}

.desktop-nav a {
  font-size: 15px !important;
  color: #6e6e73 !important;
  text-decoration: none !important;
  transition: color 200ms ease !important;
}

.desktop-nav a:hover {
  color: #007aff !important;
}

/* ===== ハンバーガーボタン（Cocoonより優先） ===== */
.hamburger-btn {
  display: flex !important;
  flex-direction: column !important;
  justify-content: center !important;
  align-items: center !important;
  width: 44px !important;
  height: 44px !important;
  background: none !important;
  border: none !important;
  cursor: pointer !important;
  padding: 0 !important;
  z-index: 100001 !important;
  position: relative !important;
  gap: 0 !important;
}

.hamburger-bar {
  width: 24px !important;
  height: 2px !important;
  background: #1a1a1a !important;
  border-radius: 2px !important;
  transition: all 300ms cubic-bezier(0.4, 0, 0.2, 1) !important;
  position: absolute !important;
  left: 10px !important;
}

.hamburger-bar:nth-child(1) {
  top: 14px !important;
}

.hamburger-bar:nth-child(2) {
  top: 21px !important;
}

.hamburger-bar:nth-child(3) {
  top: 28px !important;
}

/* ハンバーガー開いた状態（×） */
.hamburger-btn.active .hamburger-bar:nth-child(1) {
  top: 21px !important;
  transform: rotate(45deg) !important;
}

.hamburger-btn.active .hamburger-bar:nth-child(2) {
  opacity: 0 !important;
  transform: scaleX(0) !important;
}

.hamburger-btn.active .hamburger-bar:nth-child(3) {
  top: 21px !important;
  transform: rotate(-45deg) !important;
}

/* ===== モバイルメニュー（Cocoon完全対策版） ===== */
.mobile-nav {
  /* 初期状態：display は使わない！ */
  position: fixed !important;
  top: 64px !important;
  left: 0 !important;
  right: 0 !important;
  bottom: 0 !important;
  width: 100% !important;
  height: calc(100vh - 64px) !important;

  /* 背景 */
  background: rgba(255, 255, 255, 0.98) !important;
  backdrop-filter: blur(20px) !important;
  -webkit-backdrop-filter: blur(20px) !important;

  /* 表示制御（display は絶対使わない） */
  opacity: 0 !important;
  visibility: hidden !important;
  pointer-events: none !important;

  /* アニメーション */
  transform: translateY(-20px) !important;
  transition: all 300ms cubic-bezier(0.4, 0, 0.2, 1) !important;

  /* スクロール */
  overflow-y: auto !important;
  -webkit-overflow-scrolling: touch !important;

  /* Cocoonに絶対負けないz-index */
  z-index: 99998 !important;
}

/* メニューが開いた状態（確実に表示） */
.mobile-nav.active {
  opacity: 1 !important;
  visibility: visible !important;
  pointer-events: auto !important;
  transform: translateY(0) !important;
  display: block !important; /* これも念のため */
}

/* メニュー内のナビゲーション */
.mobile-nav nav {
  padding: 40px 24px !important;
  display: block !important;
}

.mobile-nav ul,
.mobile-menu {
  list-style: none !important;
  margin: 0 !important;
  padding: 0 !important;
  display: block !important;
}

.mobile-nav li {
  margin-bottom: 0 !important;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06) !important;
  display: block !important;
}

.mobile-nav li:last-child {
  border-bottom: none !important;
}

.mobile-nav a,
.mobile-nav-link {
  display: block !important;
  padding: 20px 0 !important;
  font-size: 24px !important;
  font-weight: 300 !important;
  color: #1a1a1a !important;
  text-decoration: none !important;
  transition: all 200ms ease !important;
  opacity: 1 !important;
  visibility: visible !important;
}

.mobile-nav a:active,
.mobile-nav-link:active,
.mobile-nav a:hover,
.mobile-nav-link:hover {
  color: #007aff !important;
  background: rgba(0, 122, 255, 0.05) !important;
  padding-left: 12px !important;
}

/* ===== タブレット以上でデスクトップナビ表示 ===== */
@media (min-width: 769px) {
  .desktop-nav {
    display: block !important;
  }

  .hamburger-btn {
    display: none !important;
  }

  .mobile-nav {
    display: none !important;
    opacity: 0 !important;
    visibility: hidden !important;
  }

  .header-container {
    padding: 0 48px !important;
    height: 72px !important;
  }

  .site-logo {
    font-size: 17px !important;
  }
}

/* ===== 小さいスマホ対応 ===== */
@media (max-width: 374px) {
  .header-container {
    padding: 0 16px !important;
  }

  .site-logo {
    font-size: 14px !important;
  }

  .mobile-nav a,
  .mobile-nav-link {
    font-size: 20px !important;
  }
}

/* ===== スクロール時のヘッダー変化 ===== */
.site-header.scrolled {
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05) !important;
}

/* ===== Scroll to Top Button ===== */
.scroll-to-top {
  position: fixed !important;
  bottom: var(--space-xl) !important;
  right: var(--space-xl) !important;
  width: 56px !important;
  height: 56px !important;
  background: var(--accent) !important;
  color: white !important;
  border: none !important;
  border-radius: var(--radius-full) !important;
  font-size: var(--font-2xl) !important;      /* 矢印を大きく */
  font-weight: 300 !important;                /* 軽やかなフォント */
  line-height: 1 !important;
  cursor: pointer !important;
  box-shadow: var(--shadow-lg) !important;
  transition: all var(--transition-fast) !important;
  z-index: 999 !important;
  display: none !important;
  align-items: center !important;
  justify-content: center !important;
  opacity: 0 !important;
  transform: scale(0.8) !important;
}

.scroll-to-top.visible {
  display: flex !important;
  opacity: 1 !important;
  transform: scale(1) !important;
}

.scroll-to-top:hover {
  background: var(--accent-light) !important;
  transform: translateY(-4px) !important;
  box-shadow: var(--shadow-xl) !important;
}

.scroll-to-top:active {
  transform: translateY(-2px) !important;
}

/* ===== Accessibility ===== */
@media (prefers-reduced-motion: reduce) {
  .mobile-nav,
  .hamburger-bar,
  .scroll-to-top {
    transition: none !important;
  }
}

/* ===== Print Styles ===== */
@media print {
  .site-header {
    position: relative !important;
    box-shadow: none !important;
  }

  .hamburger-btn,
  .mobile-nav,
  .scroll-to-top {
    display: none !important;
  }
}

/* ===== Cocoon 特有のリセット ===== */
body.menu-open {
  overflow: hidden !important;
  position: fixed !important;
  width: 100% !important;
  height: 100% !important;
}

/* Cocoonのヘッダーを無効化（必要に応じて） */
#header-container {
  z-index: 99998 !important;
}