/* 
 * Global Side Navigation Styles
 * /ntcir/ 直下のページ用サイドナビゲーション
 * NTCIR-1 〜 NTCIR-19 へのリンク一覧
 * 
 * 注意: NTCIR-19のサイドナビ (.side-nav) とは別のスタイル
 * .global-side-nav-wrapper をセレクタに含めることで競合を防ぐ
 * common.cssのスタイルを上書きするため、詳細度を高めている
 */

/* Wrapper */
main .sections-wrapper .global-side-nav-wrapper {
  width: 220px;
  min-width: 180px;
  flex-shrink: 0;
  margin-top: 60px;
  margin-bottom: 40px;
  align-self: flex-start;
}

/* Nav Container - common.cssのスタイルを上書き */
main .sections-wrapper .global-side-nav-wrapper .side-nav {
  background: linear-gradient(135deg, #ffffff 0%, #f8fbff 100%) !important;
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(0, 56, 141, 0.2) !important;
  padding: 20px 0 !important;
  width: auto !important;
  position: relative;
  overflow: hidden;
}

/* 装飾的なアクセント（左上） */
main .sections-wrapper .global-side-nav-wrapper .side-nav::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, #00388D 0%, #609BF2 100%);
}

/* Nav Title */
main .sections-wrapper .global-side-nav-wrapper .side-nav .nav-title {
  font-size: 14px;
  font-weight: bold;
  color: #00388D;
  padding: 8px 16px 12px;
  border-bottom: 1px solid rgba(0, 56, 141, 0.1) !important;
  margin: 0 0 8px 0;
}

/* List Reset - common.cssのスタイルを上書き */
main .sections-wrapper .global-side-nav-wrapper .side-nav ul {
  list-style: none !important;
  margin: 0 !important;
  padding: 0 !important;
  background: transparent !important;
}

/* List Items - common.cssのスタイルを上書き */
main .sections-wrapper .global-side-nav-wrapper .side-nav ul li {
  margin: 0 !important;
}

/* common.cssのアコーディオン関連の要素を非表示 */
main .sections-wrapper .global-side-nav-wrapper .side-nav .accordion-header,
main .sections-wrapper .global-side-nav-wrapper .side-nav .accordion-toggle-btn,
main .sections-wrapper .global-side-nav-wrapper .side-nav .accordion-arrow,
main .sections-wrapper .global-side-nav-wrapper .side-nav .submenu {
  display: none !important;
}

/* Links - common.cssのスタイルを上書き */
main .sections-wrapper .global-side-nav-wrapper .side-nav ul li a {
  display: flex !important;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px !important;
  color: #444 !important;
  font-size: 14px !important;
  font-weight: 500 !important;
  text-decoration: none !important;
  transition: all 0.25s ease !important;
  border-left: 3px solid transparent !important;
  border-right: none !important;
  border-top: none !important;
  border-bottom: 1px solid rgba(0, 56, 141, 0.08) !important;
  position: relative;
  background: transparent !important;
}

/* ホバー時のグラデーション背景 */
main .sections-wrapper .global-side-nav-wrapper .side-nav ul li a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, rgba(0, 56, 141, 0.08) 0%, transparent 100%);
  opacity: 0;
  transition: opacity 0.25s ease;
  z-index: -1;
}

/* Arrow Icon - common.cssの::afterを上書き */
main .sections-wrapper .global-side-nav-wrapper .side-nav ul li a::after {
  content: "" !important;
  width: 6px !important;
  height: 6px !important;
  border-top: 2px solid #00388D !important;
  border-right: 2px solid #00388D !important;
  border-bottom: none !important;
  border-left: none !important;
  transform: rotate(45deg) translateX(-3px) !important;
  opacity: 0 !important;
  transition: all 0.25s ease !important;
  position: static !important;
  top: auto !important;
  right: auto !important;
  rotate: none !important;
}

/* Hover State - common.cssのスタイルを上書き */
main .sections-wrapper .global-side-nav-wrapper .side-nav ul li a:hover {
  color: #00388D !important;
  border-left-color: #00388D !important;
  padding-left: 24px !important;
}

main .sections-wrapper .global-side-nav-wrapper .side-nav ul li a:hover::before {
  opacity: 1 !important;
}

main .sections-wrapper .global-side-nav-wrapper .side-nav ul li a:hover::after {
  opacity: 1 !important;
  transform: rotate(45deg) translateX(0) !important;
}

/* Active State (current page) - common.cssのスタイルを上書き */
main .sections-wrapper .global-side-nav-wrapper .side-nav ul li a.active {
  background: linear-gradient(90deg, rgba(0, 56, 141, 0.1) 0%, rgba(0, 56, 141, 0.02) 100%) !important;
  color: #00388D !important;
  font-weight: bold !important;
  border-left-color: #00388D !important;
  border-right: none !important;
}

/* 最後の要素のボーダーを消す */
main .sections-wrapper .global-side-nav-wrapper .side-nav ul li:last-child a {
  border-bottom: none !important;
}

/* 最初の要素（NTCIR-19）にアクセントカラー */
main .sections-wrapper .global-side-nav-wrapper .side-nav ul li:first-child a {
  color: #00388D !important;
  font-weight: 600 !important;
}

/* ===========================================
   Responsive Styles
   =========================================== */

@media screen and (max-width: 1024px) {
  main .sections-wrapper .global-side-nav-wrapper {
    width: 180px;
    min-width: 160px;
  }

  main .sections-wrapper .global-side-nav-wrapper .side-nav ul li a {
    padding: 10px 16px !important;
    font-size: 13px !important;
  }

  main .sections-wrapper .global-side-nav-wrapper .side-nav ul li a:hover {
    padding-left: 20px !important;
  }
}

@media screen and (max-width: 780px) {

  /* Hide sidebar on mobile */
  main .sections-wrapper .global-side-nav-wrapper {
    display: none;
  }
}

/*# sourceMappingURL=global-side-nav.css.map */