/* ==============================================
   ヘッダーコンポーネント専用CSS
   ============================================== */

/* --- CSS変数定義（全ページで必要） --- */
:root {
  --main-color: #000;
  --text-color: #fff;
  --border-color: #fff;
  --hover-color: #202020;
  --theme-yellow: #FFBA36;
  --hover-text-color: #ffba36;
  --transition-speed: .3s;
  --transition-speed-fast: .1s;
  --font-family-base: "Arial", "Noto Sans JP", sans-serif;
  --sp-breakpoint: 1200px;
  --pc-header-height: 60px;
  --sp-header-height: 50px;
  --blur-bg: rgba(0, 0, 0, 0.6);
  --blur-value: 15px;
  --z-index-pc-header: 1000;
  --z-index-sp-header: 1001;
  --z-index-sp-modal: 1002;
  --z-index-sp-header-ui: 1003;
  --z-index-dropdown: 10;
}

/* --- PC/SP表示切替（全ページで必要） --- */
.pc-only {
  display: block;
}

@media (max-width: 1200px) {
  .pc-only {
    display: none !important;
  }
}

.sp-only {
  display: none;
}

@media (max-width: 1200px) {
  .sp-only {
    display: block !important;
  }
}

/* --- ヘッダー専用のグローバルリセット --- */
.header ul,
.sp-header ul {
  list-style: none;
}

.header a,
.sp-header a {
  text-decoration: none;
  color: var(--text-color);
}

.header img,
.sp-header img {
  max-width: 100%;
}

/* ==============================================
   PC Header
   ============================================== */
.header {
  width: 100%;
  position: fixed;
  top: 0;
  left: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  z-index: var(--z-index-pc-header);
  font-family: var(--font-family-base);
}

.header__wrap {
  max-width: 1200px;
  width: 100%;
  margin: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  line-height: 1;
  height: var(--pc-header-height);
}

.header__wrap > a > img {
  display: block;
}

.header__list {
  display: flex;
  justify-content: center;
  gap: 30px;
}

.header__list-item {
  height: var(--pc-header-height);
  transition: background-color var(--transition-speed);
  padding: 0 10px;
}

@media (hover: hover) {
  .header__list-item:hover {
    background: rgba(54, 54, 54, 0.6);
  }
  
  .header__list-item:hover .drop-menu__list {
    transform: scaleY(1);
    opacity: 1;
    visibility: visible;
    transition: transform var(--transition-speed), opacity var(--transition-speed), visibility 0s;
  }
}

/* --- ドロップダウンメニュー --- */
.drop-menu {
  position: relative;
}

.drop-menu__list {
  left: 0;
  position: absolute;
  top: 100%;
  transform: scaleY(0);
  transform-origin: center top;
  width: max-content;
  z-index: var(--z-index-dropdown);
  opacity: 0;
  visibility: hidden;
  transition: transform var(--transition-speed), opacity var(--transition-speed), visibility 0s var(--transition-speed);
}

.drop-menu__item {
  background: rgba(54, 54, 54, 0.95);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  transition: opacity var(--transition-speed);
  padding: 0 14px;
}

.drop-menu__link,
.drop-menu__list-link {
  align-items: center;
  color: var(--text-color);
  display: inline-flex;
  height: var(--pc-header-height);
  justify-content: flex-start;
  transition: color var(--transition-speed);
  font-size: 16px;
}

@media (hover: hover) {
  .drop-menu__link:hover,
  .drop-menu__list-link:hover {
    color: var(--hover-text-color);
  }
}

/* --- アコーディオン（PC用） --- */
.accordion__title {
  align-items: center;
  color: var(--text-color);
  display: inline-flex;
  height: 50px;
  justify-content: flex-start;
  cursor: pointer;
  transition: color var(--transition-speed);
  font-size: 16px;
}

@media (hover: hover) {
  .accordion__title:hover {
    color: var(--hover-text-color);
  }
}

.accordion__link-wrap {
  display: flex;
  flex-direction: column;
  padding: 0 20px 15px;
}

.accordion__link {
  cursor: pointer;
  align-items: center;
  color: var(--text-color);
  display: inline-flex;
  height: 30px;
  transition: color var(--transition-speed);
  font-size: 14px;
}

@media (hover: hover) {
  .accordion__link:hover {
    color: var(--hover-text-color);
  }
}

.accordion__title-icon {
  transition: var(--transition-speed-fast);
  margin: 0 0 0 5px;
}

.accordion__details {
  display: inline;
}

.accordion__details[open] .accordion__title-icon {
  transform: rotate(180deg);
}

/* ==============================================
   SP Header
   ============================================== */
.sp-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--sp-header-height);
  z-index: var(--z-index-sp-header);
  background: var(--main-color);
  background: rgba(0, 0, 0, 0.8);
  font-family: var(--font-family-base);
}

.sp-header__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding: 0 20px;
  position: relative;
}

.sp-header__logo {
  width: 160px;
  z-index: var(--z-index-sp-header-ui);
}

.sp-header__logo img {
  display: block;
  width: 100%;
}

.sp-header__hamburger {
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  z-index: var(--z-index-sp-header-ui);
}

.sp-header__hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-color);
  transition: all var(--transition-speed) ease;
}

.sp-header__checkbox {
  display: none;
}

.sp-header__checkbox:checked + .sp-header__hamburger span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

.sp-header__checkbox:checked + .sp-header__hamburger span:nth-child(2) {
  opacity: 0;
}

.sp-header__checkbox:checked + .sp-header__hamburger span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

.sp-header__checkbox:checked ~ .sp-modal {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition: opacity var(--transition-speed) ease-out, transform var(--transition-speed) cubic-bezier(0.25, 0.46, 0.45, 0.94), visibility 0s;
}

.sp-header__checkbox:checked ~ .sp-modal .sp-modal__list {
  opacity: 1;
  transform: translateY(0);
}

/* ==============================================
   SP Modal
   ============================================== */
.sp-modal {
  position: fixed;
  inset: 0;
  background: var(--blur-bg);
  backdrop-filter: blur(var(--blur-value));
  -webkit-backdrop-filter: blur(var(--blur-value));
  padding-top: calc(var(--sp-header-height) + 20px);
  z-index: var(--z-index-sp-modal);
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transform: translateY(100%);
  transition: opacity var(--transition-speed) ease-in, transform var(--transition-speed) cubic-bezier(0.55, 0.055, 0.675, 0.19), visibility 0s var(--transition-speed);
}

.sp-modal__inner {
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

.sp-modal__list {
  padding: 20px 30px;
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-speed) ease-in;
}

.sp-modal__item {
  margin-bottom: 25px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.05em;
}

.sp-modal__item a {
  color: var(--text-color);
  display: block;
}

.sp-modal__sns {
  padding: 0 30px 60px;
}

.sp-modal__sns .modal-sns-icon {
  display: inline-block;
  width: 35px;
}

/* ==============================================
   SP Accordion
   ============================================== */
.sp-accordion__title {
  display: flex;
  align-items: center;
  list-style: none;
  cursor: pointer;
  color: var(--text-color);
}

.sp-accordion__title::-webkit-details-marker {
  display: none;
}

.sp-accordion__title .material-icons-outlined {
  font-size: 24px;
  margin-left: 5px;
  transition: transform var(--transition-speed);
}

.sp-accordion__content {
  padding: 0 0 0 15px;
}

.sp-accordion__link {
  display: block;
  font-size: 18px;
  padding: 10px 0;
  font-weight: 700;
  color: var(--text-color);
}

.sp-accordion__link::before {
  content: "•";
  margin-right: 12px;
}

.sp-accordion__link.no-bullet::before {
  content: "";
  margin: 0;
}

.sp-accordion.is-sub .sp-accordion__title {
  font-size: 18px;
  font-weight: 700;
  padding: 8px 0;
}

.sp-accordion.is-sub .sp-accordion__title::before {
  content: "•";
  margin-right: 12px;
}

.sp-accordion.is-sub .sp-accordion__content {
  padding-left: 20px;
}

.sp-accordion[open] > .sp-accordion__title .material-icons-outlined {
  transform: rotate(180deg);
}