/* =========================================================
   Components CSS
   - ヘッダー、ナビゲーション、ローダー、ボタン、カード、アコーディオン、フッターなど
   - v4: 薄グレー背景 + 白い情報面 のトーンに再調整
   - mobile footer redesign
========================================================= */

/* =========================
   Loader
========================= */
.loader__progress {
  width: min(100%, 32rem);
  margin-top: var(--space-xs);
}

.loader__progress-track {
  position: relative;
  width: 100%;
  height: 6px;
  overflow: hidden;
  border-radius: var(--radius-pill);
  background: rgba(17, 17, 17, 0.08);
}

.loader__progress-bar {
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: var(--gradient-brand);
  box-shadow: 0 0 18px rgba(0, 129, 204, 0.14);
  transition: width var(--transition-base);
}

.loader__progress-text {
  margin-top: 1rem;
  color: var(--color-text-subtle);
  font-family: var(--font-family-en);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  text-align: center;
}

/* =========================
   Header / Navigation
========================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid rgba(17, 17, 17, 0.06);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  min-height: var(--header-height);
}

.site-logo {
  width: 15%;
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  flex-shrink: 0;
  font-family: var(--font-family-en);
  font-size: 2rem;
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.08em;
  line-height: 1;
}

.site-logo__main {
  color: var(--color-text-strong);
}

.site-logo__accent {
  color: var(--color-brand-red);
}

.site-logo:hover,
.site-logo:focus-visible {
  opacity: 0.82;
}

.global-nav {
  margin-left: auto;
}

.global-nav__header {
  display: none;
}

.global-nav__body {
  display: block;
}

.global-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2vw, 32px);
}

.global-nav__list a {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--color-text);
  font-family: var(--font-family-en);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
}

.global-nav__list a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 7px;
  width: 100%;
  height: 2px;
  background: var(--gradient-brand);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--transition-fast);
}

.global-nav__list a:hover::after,
.global-nav__list a:focus-visible::after,
.global-nav__list a[aria-current="page"]::after {
  transform: scaleX(1);
}

.menu-toggle {
  display: none;
  position: relative;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(17, 17, 17, 0.08);
  background: rgba(255, 255, 255, 0.9);
}

.menu-toggle__line {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: var(--radius-pill);
  background: var(--color-text-strong);
  transition:
    transform var(--transition-fast),
    opacity var(--transition-fast);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__line:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] .menu-toggle__line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.global-nav__title {
  color: var(--color-text-subtle);
  font-family: var(--font-family-en);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-wider);
  text-transform: uppercase;
}

.global-nav__close {
  display: inline-flex;
  position: relative;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(17, 17, 17, 0.08);
  background: rgba(255, 255, 255, 0.86);
}

.global-nav__close-line {
  position: absolute;
  width: 18px;
  height: 2px;
  border-radius: var(--radius-pill);
  background: var(--color-text-strong);
}

.global-nav__close-line:first-child {
  transform: rotate(45deg);
}

.global-nav__close-line:last-child {
  transform: rotate(-45deg);
}

.menu-backdrop {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  background: rgba(17, 17, 17, 0.34);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.menu-backdrop.is-visible {
  opacity: 1;
  pointer-events: auto;
}

/* =========================
   Button
========================= */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  min-height: 52px;
  padding: 0 2rem;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  letter-spacing: var(--letter-spacing-wide);
  text-align: center;
  white-space: nowrap;
}

.button--primary {
  color: var(--color-text-on-dark);
  background: var(--color-brand-red);
  box-shadow: 0 10px 26px rgba(230, 0, 19, 0.18);
}

.button--primary:hover,
.button--primary:focus-visible {
  transform: translateY(-1px);
  background: #cf0011;
  box-shadow: 0 14px 34px rgba(230, 0, 19, 0.24);
}

.button--secondary {
  color: var(--color-brand-blue);
  background: rgba(255, 255, 255, 0.92);
  border-color: rgba(0, 129, 204, 0.22);
  box-shadow: 0 6px 18px rgba(0, 129, 204, 0.06);
}

.button--secondary:hover,
.button--secondary:focus-visible {
  background: rgba(255, 255, 255, 1);
  border-color: rgba(0, 129, 204, 0.38);
}

/* =========================
   Card / White Panels
========================= */
.feature-card,
.page-link-card,
.hero-card,
.information-card,
.home-trust__panel,
.accordion-item {
  background: var(--color-surface);
  border: 1px solid rgba(17, 17, 17, 0.06);
  box-shadow: 0 14px 34px rgba(17, 17, 17, 0.06);
}

.feature-card,
.page-link-card,
.information-card {
  display: grid;
  gap: var(--space-md);
  padding: clamp(24px, 3vw, 36px);
  border-radius: var(--radius-lg);
}

.feature-card__number,
.page-link-card__label,
.hero-card__label,
.information-card__label {
  color: var(--color-text-subtle);
  font-family: var(--font-family-en);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-wider);
  text-transform: uppercase;
}

.feature-card__title,
.page-link-card__title,
.information-card__title {
  font-size: clamp(2rem, 1.8rem + 0.5vw, 2.6rem);
}

.feature-card__text,
.page-link-card__text,
.hero-card__text,
.information-card__text {
  color: var(--color-text-muted);
}

.page-link-card .text-link {
  margin-top: var(--space-xs);
}

/* =========================
   Accordion
========================= */
.issues__accordion {
  display: grid;
  gap: var(--space-md);
}

.accordion-item {
  border-radius: var(--radius-md);
  overflow: clip;
}

.accordion-trigger {
  position: relative;
  width: 100%;
  padding: 2rem 5.6rem 2rem 2rem;
  text-align: left;
  color: var(--color-text-strong);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-snug);
}

.accordion-trigger::before,
.accordion-trigger::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 2rem;
  width: 16px;
  height: 2px;
  border-radius: var(--radius-pill);
  background: var(--color-text-strong);
  transform: translateY(-50%);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.accordion-trigger::after {
  transform: translateY(-50%) rotate(90deg);
}

.accordion-trigger[aria-expanded="true"]::after {
  opacity: 0;
}

.accordion-panel {
  padding: 0 2rem 2rem;
}

.accordion-panel p {
  color: var(--color-text-muted);
}

/* =========================
   Text Links
========================= */
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  color: var(--color-text-strong);
  font-family: var(--font-family-en);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
}

.text-link::after {
  content: "→";
  transform: translateX(0);
  transition: transform var(--transition-fast);
}

.text-link:hover::after,
.text-link:focus-visible::after {
  transform: translateX(4px);
}

/* =========================
   Footer
========================= */
.site-footer {
  padding-top: var(--section-space-y-sm);
  padding-bottom: var(--space-xl);
  background: var(--color-bg-muted);
  border-top: 1px solid rgba(17, 17, 17, 0.06);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-2xl);
  align-items: start;
}

.site-footer__brand {
  display: grid;
  gap: var(--space-md);
  max-width: 48rem;
}

.site-logo--footer {
  width: 35%;
  font-size: 1.8rem;
}

.site-footer__text,
.site-footer__copy {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.footer-nav__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 1.2rem 2rem;
}

.footer-nav__list a {
  color: var(--color-text);
  font-family: var(--font-family-en);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
}

.footer-nav__list a:hover,
.footer-nav__list a:focus-visible {
  color: var(--color-brand-blue);
}

.site-footer__bottom {
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(17, 17, 17, 0.08);
}

/* =========================
   Utility / State
========================= */
.is-open > .accordion-panel {
  display: block;
}

/* =========================
   Responsive
========================= */
@media (max-width: 991px) {
  .site-header__inner {
    min-height: var(--header-height-mobile);
  }
  
  a.site-logo {
    width: 25%;
  }

  .menu-toggle {
    display: inline-flex;
    z-index: var(--z-drawer);
  }

  .global-nav {
    position: fixed;
    inset: 0;
    z-index: var(--z-drawer);
    display: grid;
    grid-template-rows: auto 1fr;
    width: 100%;
    height: 100dvh;
    margin-left: 0;
    padding: 1.6rem var(--container-padding) 2.4rem;
    background: rgba(243, 243, 241, 0.98);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition:
      opacity var(--transition-base),
      visibility var(--transition-base);
    overflow: hidden;
  }

  .global-nav.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .global-nav__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    min-height: var(--header-height-mobile);
    padding-bottom: 1.2rem;
    border-bottom: 1px solid rgba(17, 17, 17, 0.08);
  }

  .global-nav__body {
    overflow-y: auto;
    padding-top: 2rem;
    padding-bottom: 2rem;
  }

  .global-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.8rem;
  }

  .global-nav__list li {
    width: 100%;
  }

  .global-nav__list a {
    width: 100%;
    min-height: 60px;
    padding: 0.8rem 0;
    font-size: clamp(2rem, 1.7rem + 0.6vw, 2.6rem);
    letter-spacing: 0.06em;
  }

  .global-nav__list a::after {
    bottom: 10px;
  }

  .site-footer__inner {
    grid-template-columns: 1fr;
  }

  .footer-nav__list {
    justify-content: flex-start;
  }
}

@media (max-width: 767px) {
  a.site-logo {
    width: 40%;
  }

  .loader__progress {
    width: min(100%, 26rem);
  }

  .loader__progress-text {
    font-size: 1.2rem;
  }

  .button {
    width: 100%;
    min-height: 48px;
    padding-inline: 1.6rem;
  }

  .accordion-trigger {
    padding: 1.8rem 4.8rem 1.8rem 1.6rem;
    font-size: 1.5rem;
  }

  .accordion-trigger::before,
  .accordion-trigger::after {
    right: 1.6rem;
  }

  .accordion-panel {
    padding: 0 1.6rem 1.8rem;
  }

  .site-footer {
    padding-top: 4.8rem;
    padding-bottom: 2.4rem;
    background: var(--color-bg-muted);
    border-top-color: rgba(17, 17, 17, 0.06);
  }

  .site-footer__inner {
    gap: 2.4rem;
  }

  .site-footer__brand {
    gap: 1.2rem;
    max-width: none;
  }

  .site-footer .site-logo__main {
    color: var(--color-text-strong);
  }

  .site-footer__text {
    color: var(--color-text-muted);
    font-size: 1.4rem;
    line-height: 1.8;
  }

  .footer-nav__list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    border-top: 1px solid rgba(17, 17, 17, 0.08);
    border-bottom: 1px solid rgba(17, 17, 17, 0.08);
  }

  .footer-nav__list li {
    border-top: 1px solid rgba(17, 17, 17, 0.06);
  }

  .footer-nav__list li:first-child {
    border-top: 0;
  }

  .footer-nav__list a {
    display: block;
    padding: 1.6rem 0;
    color: var(--color-text);
    font-size: 1.7rem;
    font-weight: var(--font-weight-medium);
    letter-spacing: 0.04em;
    text-transform: uppercase;
  }

  .footer-nav__list a:hover,
  .footer-nav__list a:focus-visible {
    color: var(--color-brand-blue);
    opacity: 1;
  }

  .site-footer__bottom {
    margin-top: 2rem;
    padding-top: 1.6rem;
    border-top-color: rgba(17, 17, 17, 0.08);
  }

  .site-footer__copy {
    color: var(--color-text-muted);
    font-size: 1.3rem;
    line-height: 1.7;
  }
}

@media (prefers-reduced-motion: reduce) {
  .loader__progress-bar,
  .menu-toggle__line,
  .menu-backdrop,
  .global-nav,
  .button,
  .accordion-trigger::before,
  .accordion-trigger::after,
  .global-nav__list a::after,
  .text-link::after {
    transition: none;
  }
}