/* ===================================
   Header Component Styles
   だいほう合同会社 ヘッダー
=================================== */

/* ヘッダー基本設定 */
.site-header {
  position: relative;
  z-index: 1030; /* Bootstrap modal (1050) より下、他コンテンツより上 */
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
}

/* fixed-topクラスが付いた場合の追加スタイル */
.site-header .navbar.fixed-top {
  z-index: 1030;
}

.site-header .navbar {
  background: transparent !important;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
  padding: 0.75rem 0;
  min-height: 70px;
}

/* スクロール時のヘッダー */
.site-header.scrolled .navbar {
  background: rgba(255, 255, 255, 0.95) !important;
  backdrop-filter: blur(20px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  padding: 0.5rem 0;
}

/* ロゴスタイル */
.navbar-brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color) !important;
  text-decoration: none;
  display: flex;
  align-items: center;
  transition: all 0.3s ease;
}

.navbar-brand:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
}

.navbar-brand img {
  transition: all 0.3s ease;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.navbar-brand:hover img {
  transform: scale(1.05);
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.15));
}

/* テキストロゴ（画像ロゴがない場合のフォールバック） */
.navbar-brand-text {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-family: system-ui, sans-serif;
  letter-spacing: 0.5px;
}

/* ナビゲーションメニュー */
.navbar-nav {
  align-items: center;
}

.navbar-nav .nav-link {
  color: var(--text-dark) !important;
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.75rem 1rem !important;
  margin: 0 0.25rem;
  border-radius: 8px;
  transition: all 0.3s ease;
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.navbar-nav .nav-link i {
  font-size: 0.9rem;
  opacity: 0.8;
  transition: all 0.3s ease;
}

.navbar-nav .nav-link:hover {
  color: var(--primary-color) !important;
  background: rgba(var(--primary-rgb), 0.1);
  transform: translateY(-2px);
}

.navbar-nav .nav-link:hover i {
  opacity: 1;
  transform: scale(1.1);
}

.navbar-nav .nav-link.active {
  color: var(--primary-color) !important;
  background: rgba(var(--primary-rgb), 0.15);
  font-weight: 600;
}

.navbar-nav .nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 3px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 2px;
}

/* ドロップダウンメニュー */
.dropdown-menu {
  border: none;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
  border-radius: 12px;
  padding: 0.75rem 0;
  margin-top: 0.5rem;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  min-width: 220px;
}

.dropdown-menu::before {
  content: '';
  position: absolute;
  top: -8px;
  left: 20px;
  width: 0;
  height: 0;
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-bottom: 8px solid rgba(255, 255, 255, 0.95);
}

.dropdown-item {
  color: var(--text-dark);
  padding: 0.75rem 1.5rem;
  font-weight: 400;
  font-size: 0.9rem;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.dropdown-item:hover {
  background: rgba(var(--primary-rgb), 0.1);
  color: var(--primary-color);
  transform: translateX(5px);
}

.dropdown-item i {
  font-size: 0.8rem;
  width: 16px;
  opacity: 0.7;
  transition: all 0.3s ease;
}

.dropdown-item:hover i {
  opacity: 1;
  transform: scale(1.1);
}

/* モバイルハンバーガーメニュー */
.navbar-toggler {
  border: none;
  padding: 0.5rem;
  border-radius: 8px;
  transition: all 0.3s ease;
  background: rgba(var(--primary-rgb), 0.1);
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.25);
}

.navbar-toggler-icon {
  background-image: none;
  position: relative;
  width: 24px;
  height: 18px;
}

.navbar-toggler-icon::before,
.navbar-toggler-icon::after,
.navbar-toggler-icon {
  background: var(--primary-color);
}

.navbar-toggler-icon::before,
.navbar-toggler-icon::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  transition: all 0.3s ease;
}

.navbar-toggler-icon::before {
  top: 0;
}

.navbar-toggler-icon::after {
  bottom: 0;
}

.navbar-toggler-icon {
  background: var(--primary-color);
  height: 2px;
  border-radius: 2px;
  margin: 8px 0;
}

/* ハンバーガーメニューアニメーション */
.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon {
  background: transparent;
}

.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::before {
  transform: rotate(45deg);
  top: 8px;
}

.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::after {
  transform: rotate(-45deg);
  bottom: 8px;
}

/* モバイルメニュー */
@media (max-width: 991.98px) {
  .navbar-collapse {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-radius: 12px;
    margin-top: 1rem;
    padding: 1.5rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
  }
  
  .navbar-nav {
    gap: 0.5rem;
  }
  
  .navbar-nav .nav-link {
    padding: 1rem !important;
    margin: 0;
    border-radius: 8px;
    justify-content: center;
    text-align: center;
  }
  
  .dropdown-menu {
    position: static;
    float: none;
    box-shadow: none;
    background: rgba(var(--primary-rgb), 0.05);
    margin: 0.5rem 0;
    border-radius: 8px;
  }
  
  .dropdown-menu::before {
    display: none;
  }
  
  .dropdown-item {
    padding: 0.75rem 1rem;
    justify-content: center;
  }
}

/* アニメーション効果 */
@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.navbar-collapse.show {
  animation: slideInDown 0.3s ease;
}

/* アクセシビリティ対応 */
.navbar-nav .nav-link:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--primary-color);
  color: white;
  padding: 8px;
  text-decoration: none;
  border-radius: 4px;
  z-index: 10000;
  transition: all 0.3s ease;
}

.skip-link:focus {
  top: 6px;
  color: white;
}

/* 高解像度ディスプレイ対応 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .navbar-brand img {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
  }
}

/* ダークモード対応（将来実装用） */
@media (prefers-color-scheme: dark) {
  .site-header {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
  }
  
  .site-header .navbar {
    background: rgba(26, 26, 26, 0.95) !important;
  }
  
  .navbar-nav .nav-link {
    color: #e0e0e0 !important;
  }
  
  .dropdown-menu {
    background: rgba(26, 26, 26, 0.95);
    color: #e0e0e0;
  }
  
  .dropdown-item {
    color: #e0e0e0;
  }
}