/* ═══════════════════════════════════════════
   UI Components
   ═══════════════════════════════════════════ */

/* ── Buttons ── */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 40px;
  border: 1px solid var(--white);
  color: var(--white);
  font-family: var(--font-en);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  overflow: hidden;
  transition: color var(--duration-normal) var(--ease-out);
  cursor: pointer;
  background: transparent;
  white-space: nowrap;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--white);
  transform: translateY(100%);
  transition: transform var(--duration-normal) var(--ease-out);
}

.btn:hover::before { transform: translateY(0); }
.btn:hover { color: var(--black); }
.btn span { position: relative; z-index: 1; }

/* Dark variant */
.btn--dark {
  border-color: var(--black);
  color: var(--black);
}
.btn--dark::before { background: var(--black); }
.btn--dark:hover { color: var(--white); }

/* Small variant */
.btn--sm {
  padding: 12px 24px;
  font-size: var(--text-xs);
}

/* Ghost variant */
.btn--ghost {
  border-color: var(--gray-700);
  color: var(--gray-400);
}
.btn--ghost:hover { color: var(--black); }

/* Large variant */
.btn--lg {
  font-size: var(--text-base);
  padding: 18px 40px;
}

/* ── Hero Section ── */
.hero-full-viewport {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  padding: 0 var(--space-page);
}

.hero-glow {
  position: absolute;
  top: 0; right: 0; bottom: 0; left: 0;
  inset: 0;
  background: radial-gradient(ellipse at 50% 80%, rgba(26,58,92,0.08) 0%, transparent 60%);
  pointer-events: none;
}

.hero-content--positioned {
  position: relative;
  z-index: 1;
}

.hero-title-font {
  display: block;
  margin-bottom: 4px;
  font-family: 'Futura', 'Tw Cen MT', sans-serif;
}
.hero-title-font:last-child { margin-bottom: 0; }

.hero-label {
  margin-bottom: var(--space-lg);
  letter-spacing: 0.3em;
  color: var(--gray-400);
}

.hero-subtitle-style {
  margin-top: var(--space-lg);
  font-family: var(--font-ja);
  font-size: var(--text-base);
  font-weight: 300;
  letter-spacing: 0.2em;
  color: var(--gray-300);
}

.scroll-indicator-centered {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
}

/* ── Strength Grid Item ── */
.strength-grid-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-lg);
  padding: var(--space-xl) 0;
  border-bottom: 1px solid var(--gray-800);
  align-items: start;
}

/* ── Flow Steps (First Time) ── */
.flow-steps-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  margin-bottom: var(--space-xl);
}

.step-box {
  padding: var(--space-md) var(--space-sm);
  border: 1px solid var(--gray-800);
  border-radius: 4px;
  text-align: center;
}

.step-box-text {
  font-size: 14px;
  line-height: 1.4;
}

/* ── Stat Display ── */
.stat-number {
  font-size: 28px;
  margin-bottom: var(--space-sm);
}

/* ── Slogan ── */
.slogan-style {
  font-family: var(--font-ja);
  font-size: var(--text-2xl);
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--gray-200);
}

/* ── Gallery Grid ── */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

/* ── Heading: multi-line ── */
.heading-multiline {
  white-space: pre-line;
}

/* ── Footer small text ── */
.footer-note {
  font-size: 12px;
  color: var(--gray-600);
  line-height: 1.8;
}
.footnote-text {
  margin-top: var(--space-md);
  font-size: 13px;
}

/* ── Divider margin ── */
.divider-margin {
  margin: var(--space-xl) 0;
}

/* ── Activity flow item ── */
.flow-item-number {
  font-size: 28px;
  margin-bottom: 8px;
}
.flow-item-time {
  font-size: 14px;
  margin-bottom: 8px;
}
.flow-item-desc {
  font-size: 13px;
  color: var(--gray-400);
}

/* ── Header ── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  padding: 0 var(--space-page);
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background var(--duration-normal) ease,
              -webkit-backdrop-filter var(--duration-normal) ease,
              backdrop-filter var(--duration-normal) ease;
}

.header--scrolled {
  background: rgba(0, 0, 0, 0.92);
  -webkit-backdrop-filter: blur(24px);
  backdrop-filter: blur(24px);
}

.header__logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.1em;
  transition: opacity var(--duration-fast);
}

.header__logo:hover { opacity: 0.7; }

.header__nav {
  display: flex;
  align-items: center;
  gap: 36px;
}

.header__nav-link {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-400); /* WCAG AA: 5.01:1 on black */
  transition: color var(--duration-fast);
  white-space: nowrap;
}

.header__nav-desktop {
  display: flex;
  gap: 20px;
}

.header__nav-link:hover,
.header__nav-link--active { color: var(--white); }

.header__ig {
  font-family: var(--font-en);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--gray-400); /* WCAG AA: 5.01:1 on black */
  transition: color var(--duration-fast);
}
.header__ig:hover { color: var(--white); }

/* Hamburger */
.hamburger {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px; /* WCAG 2.5.8: min 24x24px target */
  z-index: calc(var(--z-menu) + 10);
  cursor: pointer;
}

.hamburger__line {
  width: 28px;
  height: 1px;
  background: var(--white);
  transition: all var(--duration-normal) var(--ease-out);
  transform-origin: center;
}

.hamburger--open .hamburger__line:nth-child(1) {
  transform: translateY(3.5px) rotate(45deg);
}
.hamburger--open .hamburger__line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.hamburger--open .hamburger__line:nth-child(3) {
  transform: translateY(-3.5px) rotate(-45deg);
}

/* ── Full-screen Menu ── */
.menu-overlay {
  position: fixed;
  top: 0; right: 0; bottom: 0; left: 0;
  inset: 0;
  background: var(--black);
  z-index: var(--z-menu);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.menu-overlay--open {
  opacity: 1;
  visibility: visible;
}

.menu-overlay__link {
  font-family: var(--font-display);
  font-size: clamp(22px, 4.5vw, 36px);
  font-weight: 700;
  letter-spacing: -0.02em;
  padding: 5px 0;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.5s ease, transform 0.5s ease, color var(--duration-fast);
}

.menu-overlay--open .menu-overlay__link {
  opacity: 1;
  transform: translateY(0);
}

.menu-overlay__link:hover {
  color: var(--gray-400);
}

/* Stagger delay */
.menu-overlay--open .menu-overlay__link:nth-child(1)  { transition-delay: 0.05s; }
.menu-overlay--open .menu-overlay__link:nth-child(2)  { transition-delay: 0.08s; }
.menu-overlay--open .menu-overlay__link:nth-child(3)  { transition-delay: 0.11s; }
.menu-overlay--open .menu-overlay__link:nth-child(4)  { transition-delay: 0.14s; }
.menu-overlay--open .menu-overlay__link:nth-child(5)  { transition-delay: 0.17s; }
.menu-overlay--open .menu-overlay__link:nth-child(6)  { transition-delay: 0.20s; }
.menu-overlay--open .menu-overlay__link:nth-child(7)  { transition-delay: 0.23s; }
.menu-overlay--open .menu-overlay__link:nth-child(8)  { transition-delay: 0.26s; }
.menu-overlay--open .menu-overlay__link:nth-child(9)  { transition-delay: 0.29s; }
.menu-overlay--open .menu-overlay__link:nth-child(10) { transition-delay: 0.32s; }
.menu-overlay--open .menu-overlay__link:nth-child(11) { transition-delay: 0.35s; }

.menu-overlay__ig {
  margin-top: var(--space-lg);
  font-family: var(--font-en);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease 0.4s, transform 0.5s ease 0.4s;
  color: var(--gray-400);
}
.menu-overlay--open .menu-overlay__ig {
  opacity: 1;
  transform: translateY(0);
}
.menu-overlay__ig:hover { color: var(--white); }

/* Close button in menu */
.menu-overlay__close {
  position: absolute;
  top: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  opacity: 0;
  transition: opacity 0.3s ease 0.1s;
}
.menu-overlay--open .menu-overlay__close {
  opacity: 1;
}
.menu-overlay__close::before,
.menu-overlay__close::after {
  content: '';
  position: absolute;
  width: 28px;
  height: 1px;
  background: var(--white);
  transition: background var(--duration-fast);
}
.menu-overlay__close::before { transform: rotate(45deg); }
.menu-overlay__close::after { transform: rotate(-45deg); }
.menu-overlay__close:hover::before,
.menu-overlay__close:hover::after {
  background: var(--gray-400);
}

/* ── Footer ── */
.footer {
  background: var(--black);
  padding: var(--space-3xl) var(--space-page) var(--space-lg);
  border-top: 1px solid var(--gray-900);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(2, 1fr) 1.2fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.footer__brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-3xl);
  margin-bottom: var(--space-sm);
}

.footer__brand-en {
  font-family: var(--font-en);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--gray-500);
}

.footer__brand-slogan {
  font-size: var(--text-sm);
  color: var(--gray-600);
  margin-top: var(--space-sm);
}

.footer__col-title {
  font-family: var(--font-en);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-500);
  margin-bottom: var(--space-md);
}

.footer__link {
  display: block;
  font-family: var(--font-en);
  font-size: var(--text-sm);
  letter-spacing: 0.05em;
  padding: 10px 0; /* WCAG 2.5.8: min 24px target height */
  color: var(--gray-500);
  transition: color var(--duration-fast);
}
.footer__link:hover { color: var(--white); }

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--gray-900);
}

.footer__copyright {
  font-family: var(--font-en);
  font-size: var(--text-xs);
  color: var(--gray-600);
  letter-spacing: 0.05em;
}

/* ── Page Hero ── */
.page-hero {
  min-height: 55vh;
  display: flex;
  align-items: flex-end;
  padding: calc(var(--header-height) + var(--space-3xl)) var(--space-page) var(--space-xl);
}

.page-hero__label {
  margin-bottom: var(--space-md);
}

.page-hero__title {
  margin-bottom: var(--space-sm);
}

.page-hero__subtitle {
  max-width: 560px;
  color: var(--gray-300);
}

/* ── Section Header ── */
.section-header {
  margin-bottom: var(--space-xl);
}

.section-header__label {
  margin-bottom: var(--space-md);
}

.section-header__en {
  font-family: var(--font-en);
  font-size: 14px;
  letter-spacing: 0.1em;
  opacity: 0.35;
  margin-bottom: var(--space-md);
}

.section-header__desc {
  max-width: 600px;
}

/* ── Card ── */
.card {
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--gray-800);
}
.card--light {
  border-top-color: var(--gray-200);
}

/* ── Marquee ── */
.marquee {
  padding: var(--space-lg) 0;
  overflow: hidden;
  border-top: 1px solid var(--gray-900);
  border-bottom: 1px solid var(--gray-900);
}

.marquee__track {
  display: flex;
  gap: 80px;
  animation: marqueeScroll 35s linear infinite;
  white-space: nowrap;
}

.marquee__text {
  font-family: 'Futura', 'Tw Cen MT', var(--font-display);
  font-size: clamp(48px, 8vw, 100px);
  font-weight: 700;
  color: var(--gray-900);
  white-space: nowrap;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

@keyframes marqueeScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ── Stat Block ── */
.stat {
  text-align: center;
}

.stat__number {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(48px, 7vw, 80px);
  line-height: 1;
  letter-spacing: -0.03em;
}

.stat__unit {
  font-size: 0.35em;
  font-weight: 300;
}

.stat__label {
  font-family: var(--font-ja);
  font-size: var(--text-sm);
  margin-top: var(--space-xs);
  color: var(--gray-300);
}

.stat__sub {
  font-family: var(--font-en);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--gray-600);
  margin-top: 4px;
}

/* ── News Item ── */
.news-item {
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--gray-800);
  transition: background var(--duration-fast);
  cursor: pointer;
}
.news-item:hover {
  background: var(--gray-950);
}

.news-item__meta {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
  margin-bottom: var(--space-sm);
}

.news-item__date {
  font-family: var(--font-en);
  font-size: var(--text-sm);
  color: var(--gray-500);
}

.news-item__tag {
  font-family: var(--font-en);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  padding: 3px 10px;
  border: 1px solid var(--gray-700);
  color: var(--gray-400);
}

.news-item__title {
  font-family: var(--font-ja);
  font-size: var(--text-lg);
  font-weight: 500;
  margin-bottom: var(--space-xs);
}

.news-item__desc {
  font-family: var(--font-ja);
  font-size: var(--text-sm);
  color: var(--gray-500);
}

/* ── FAQ ── */
.faq-item {
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--gray-800);
}

.faq-item__q {
  font-family: var(--font-ja);
  font-size: var(--text-lg);
  font-weight: 500;
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
}

.faq-item__q::before {
  content: 'Q';
  font-family: var(--font-en);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--gray-500);
  flex-shrink: 0;
}

.faq-item__a {
  padding-left: calc(var(--space-sm) + 1em);
  color: var(--gray-400);
}

/* ── Step Card ── */
.step-card {
  padding: var(--space-xl) var(--space-lg);
  background: var(--gray-900);
  border-radius: 4px;
  text-align: center;
}

.step-card__label {
  margin-bottom: var(--space-md);
}

.step-card__title {
  font-family: var(--font-ja);
  font-size: var(--text-lg);
  font-weight: 400;
  margin-bottom: var(--space-sm);
}

.step-card__desc {
  font-size: var(--text-sm);
  color: var(--gray-500);
}

/* ── Loader ── */
.loader {
  position: fixed;
  top: 0; right: 0; bottom: 0; left: 0;
  inset: 0;
  background: var(--black);
  z-index: var(--z-loader);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: var(--space-md);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.8s ease, visibility 0.8s ease;
}

body.is-loading .loader {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.loader--hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader__text {
  font-family: 'Futura', 'Tw Cen MT', var(--font-display);
  font-size: clamp(14px, 4vw, 52px);
  font-weight: 700;
  letter-spacing: 0.15em;
  white-space: nowrap;
  opacity: 0;
  transform: translateY(20px);
}

.loader__bar {
  width: 60px;
  height: 1px;
  background: var(--gray-800);
  overflow: hidden;
  opacity: 0;
}

.loader__bar-inner {
  width: 100%;
  height: 100%;
  background: var(--white);
  transform: scaleX(0);
  transform-origin: left;
}

/* ── Custom Cursor ── */
.cursor {
  position: fixed;
  width: 20px;
  height: 20px;
  border: 1px solid rgba(255,255,255,0.35);
  border-radius: 50%;
  pointer-events: none;
  z-index: var(--z-cursor);
  transform: translate(-50%, -50%);
  transition: width 0.3s ease, height 0.3s ease, border-color 0.3s ease, opacity 0.3s ease;
  mix-blend-mode: difference;
  opacity: 0;
}

.cursor--visible { opacity: 1; }
.cursor--hover { width: 48px; height: 48px; border-color: rgba(255,255,255,0.7); }

/* ── Scroll Indicator ── */
.scroll-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.scroll-indicator__text {
  font-family: var(--font-en);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--gray-500);
}

.scroll-indicator__line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--gray-500), transparent);
  animation: scrollPulse 2s ease infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
  50% { opacity: 1; transform: scaleY(1); }
}