/**
 * 共通ナビ・プルダウン（全ページで統一）
 * 行き先別の虹色表示・モバイル開閉を一元管理
 */

/* グローバルナビ */
.global-nav {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border, #e2e8f0);
  position: sticky;
  top: 0;
  z-index: 900;
}
.global-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 1rem;
}

/* ヘッダー検索 */
.header-destination-search { position: relative; max-width: 220px; margin-left: auto; }
.header-destination-search input {
  width: 100%;
  padding: 0.45rem 0.65rem 0.45rem 2rem;
  border: 1px solid var(--border, #e2e8f0);
  border-radius: 8px;
  font-size: 0.85rem;
  font-family: inherit;
  background: var(--bg-primary, #fff) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cline x1='21' y1='21' x2='16.65' y2='16.65'/%3E%3C/svg%3E") no-repeat 0.5rem center;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.header-destination-search input:focus {
  border-color: #0ea5e9;
  box-shadow: 0 0 0 2px rgba(14, 165, 233, 0.15);
}
.header-destination-search input::placeholder { color: var(--text-secondary, #64748b); }
.header-search-suggestions {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 4px;
  background: var(--bg-primary, #fff);
  border: 1px solid var(--border, #e2e8f0);
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  z-index: 1000;
  max-height: 280px;
  overflow-y: auto;
}
.header-search-suggestions[hidden] { display: none !important; }
.header-search-suggestions ul { list-style: none; margin: 0; padding: 0.25rem 0; }
.header-search-suggestions li {
  padding: 0.5rem 0.75rem;
  font-size: 0.88rem;
  cursor: pointer;
  color: var(--text-primary, #1e293b);
}
.header-search-suggestions li:hover,
.header-search-suggestions li.active {
  background: rgba(14, 165, 233, 0.1);
  color: var(--accent, #0ea5e9);
}
@media (max-width: 768px) {
  .header-destination-search { max-width: 140px; }
}

/* ナビロゴ・メニュー */
.nav-logo {
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--accent, #2563eb);
  text-decoration: none;
  margin-right: 1.5rem;
  padding: 0.75rem 0;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.nav-logo .nav-logo-icon { width: 32px; height: 32px; display: block; border-radius: 50%; }
.nav-menu { list-style: none; display: flex; gap: 0; align-items: stretch; }
.nav-item { position: relative; }
.nav-link {
  display: flex;
  align-items: center;
  padding: 0.75rem 1rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary, #1e293b);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s ease, background 0.2s ease;
}
.nav-link:hover { color: var(--accent); background: var(--accent-soft, rgba(37, 99, 235, 0.1)); }
.nav-link--has-dropdown::after {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  margin-left: 0.35rem;
  margin-top: -2px;
  vertical-align: middle;
  transition: transform 0.2s ease;
}
.nav-item:hover .nav-link--has-dropdown::after { transform: rotate(-135deg); }

/* ドロップダウン（共通） */
.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: #fff;
  border: 1px solid var(--border, #e2e8f0);
  border-radius: 12px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
  padding: 0.5rem 0;
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(4px);
  transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
}
.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-dropdown li a {
  display: block;
  padding: 0.55rem 1.25rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary, #1e293b);
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease;
}

/* 行き先別プルダウン：虹色（大陸・カテゴリ別・背景のみで一重に） */
.nav-dropdown .nav-asia a { background: rgba(5, 150, 105, 0.08); }
.nav-dropdown .nav-europe a { background: rgba(37, 99, 235, 0.08); }
.nav-dropdown .nav-north-america a { background: rgba(220, 38, 38, 0.08); }
.nav-dropdown .nav-south-america a { background: rgba(202, 138, 4, 0.1); }
.nav-dropdown .nav-oceania a { background: rgba(8, 145, 178, 0.1); }
.nav-dropdown .nav-africa a { background: rgba(124, 58, 237, 0.1); }
.nav-dropdown .nav-visa-required a { background: rgba(217, 119, 6, 0.1); }
.nav-dropdown .nav-visa-free a { background: rgba(22, 163, 74, 0.1); }
.nav-dropdown .nav-external a { background: rgba(100, 116, 139, 0.1); }
.nav-dropdown li a:hover {
  background: var(--accent-soft, rgba(37, 99, 235, 0.1)) !important;
  color: var(--accent);
}

/* ハンバーガー（モバイル） */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  margin-left: auto;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary, #1e293b);
  margin: 5px 0;
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* モバイル：メニュー開いたとき・プルダウン開閉（全ページ統一） */
@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .nav-menu {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border, #e2e8f0);
    padding: 0.5rem 0;
  }
  .nav-menu.open { display: flex; }
  .nav-link { padding: 0.85rem 1.5rem; }
  /* ドロップダウン：閉じているとき */
  .nav-menu.open .nav-dropdown {
    position: static;
    transform: none;
    margin: 0;
    padding: 0;
    max-height: 0;
    overflow: hidden;
    border: none;
    border-radius: 0 8px 8px 0;
    box-shadow: none;
    background: transparent;
    transition: max-height 0.25s ease;
  }
  /* ドロップダウン：開いているとき */
  .nav-menu.open .nav-item.dropdown-open > .nav-link { color: var(--text-primary, #1e293b); }
  .nav-menu.open .nav-item.dropdown-open .nav-dropdown {
    margin: 0.25rem 0 0.5rem 0;
    padding: 0.35rem 0 0.5rem 0;
    max-height: 80vh;
    overflow: visible;
    display: block !important;
    opacity: 1 !important;
    visibility: visible !important;
  }
  .nav-menu.open .nav-item.dropdown-open .nav-dropdown li a {
    color: var(--text-primary, #1e293b);
    padding: 0.5rem 1rem 0.5rem 2.5rem;
  }
}