@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@200;300;400;500;600;700&family=Noto+Sans+JP:wght@300;400;500;600;700&display=swap');
@import url('variables.css');

/* ========================================
   Reset
======================================== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-ja);
  font-size: var(--font-size-base);
  line-height: 1.8;
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

ul, ol {
  list-style: none;
}

/* ========================================
   Utilities
======================================== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-3xl) 0;
  position: relative;
}

.section-label {
  font-family: var(--font-en);
  font-size: var(--font-size-xs);
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--spacing-md);
}

.section-title {
  font-family: var(--font-en);
  font-size: var(--font-size-2xl);
  font-weight: 300;
  letter-spacing: 0.08em;
  color: var(--color-white);
  margin-bottom: var(--spacing-xl);
}

.divider {
  width: 40px;
  height: 1px;
  background: var(--color-accent);
  margin-bottom: var(--spacing-lg);
}

/* ========================================
   Fade-in animations
======================================== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }

/* ========================================
   Header
======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  transition: background var(--transition-base), border-color var(--transition-base);
  border-bottom: 1px solid transparent;
}

.header.is-scrolled {
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--color-border);
}

.header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__logo {
  font-family: var(--font-en);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--color-white);
  transition: opacity var(--transition-fast);
}

.header__logo:hover {
  opacity: 0.7;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.header__nav-link {
  font-size: var(--font-size-sm);
  font-weight: 400;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  letter-spacing: 0.03em;
}

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

.header__contact-btn {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-accent);
  padding: 8px 20px;
  border: 1px solid var(--color-accent);
  border-radius: 2px;
  transition: all var(--transition-fast);
  letter-spacing: 0.03em;
}

.header__contact-btn:hover {
  background: var(--color-accent);
  color: var(--color-bg);
}

/* Hamburger */
.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.hamburger__line {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--color-white);
  margin: 6px 0;
  transition: all var(--transition-base);
}

.hamburger.is-active .hamburger__line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.hamburger.is-active .hamburger__line:nth-child(2) {
  opacity: 0;
}
.hamburger.is-active .hamburger__line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-lg);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

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

.mobile-menu__link {
  font-size: var(--font-size-xl);
  font-weight: 300;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  letter-spacing: 0.05em;
}

.mobile-menu__link:hover {
  color: var(--color-white);
}

/* ========================================
   Hero
======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__gradient {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.07;
  animation: float 20s ease-in-out infinite;
}

.hero__gradient--1 {
  background: #7eb8ff;
  top: 20%;
  left: 10%;
  animation-delay: 0s;
}

.hero__gradient--2 {
  background: #a78bfa;
  bottom: 20%;
  right: 10%;
  animation-delay: -7s;
  width: 500px;
  height: 500px;
}

.hero__gradient--3 {
  background: #34d399;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: -14s;
  width: 400px;
  height: 400px;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 80px 80px;
}

.hero__noise {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 0 var(--spacing-md);
}

.hero__title {
  font-family: var(--font-en);
  font-size: var(--font-size-hero);
  font-weight: 200;
  letter-spacing: 0.08em;
  color: var(--color-white);
  line-height: 1.1;
  margin-bottom: var(--spacing-md);
}

.hero__sub {
  font-size: var(--font-size-sm);
  font-weight: 300;
  color: var(--color-text-secondary);
  letter-spacing: 0.15em;
}

.hero__scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
}

.hero__scroll-line {
  display: block;
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--color-accent), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0% { opacity: 0; transform: scaleY(0); transform-origin: top; }
  50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
  51% { transform-origin: bottom; }
  100% { opacity: 0; transform: scaleY(0); transform-origin: bottom; }
}

/* ========================================
   About
======================================== */
.about__text {
  font-size: var(--font-size-lg);
  font-weight: 300;
  line-height: 2.2;
  color: var(--color-text-secondary);
  max-width: 640px;
}

.about__text strong {
  color: var(--color-text);
  font-weight: 400;
}

/* ========================================
   Numbers
======================================== */
.numbers {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin-top: var(--spacing-xl);
  overflow: hidden;
}

.numbers__item {
  background: var(--color-bg);
  padding: var(--spacing-lg) var(--spacing-md);
  text-align: center;
  transition: background var(--transition-base);
}

.numbers__item:hover {
  background: var(--color-bg-elevated);
}

.numbers__value {
  font-family: var(--font-en);
  font-size: var(--font-size-3xl);
  font-weight: 200;
  color: var(--color-white);
  letter-spacing: -0.02em;
  line-height: 1;
}

.numbers__unit {
  font-family: var(--font-en);
  font-size: var(--font-size-xl);
  font-weight: 300;
  color: var(--color-accent);
}

.numbers__label {
  display: block;
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-top: var(--spacing-xs);
}

/* ========================================
   Business
======================================== */
.business__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.business__item {
  background: var(--color-bg);
  padding: var(--spacing-lg);
  transition: background var(--transition-base);
}

.business__item:hover {
  background: var(--color-bg-elevated);
}

.business__num {
  font-family: var(--font-en);
  font-size: var(--font-size-xs);
  font-weight: 400;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-md);
}

.business__item-title {
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
  letter-spacing: 0.03em;
}

.business__item-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* ========================================
   Products
======================================== */
.products__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.product {
  background: var(--color-bg);
  padding: var(--spacing-lg);
  transition: background var(--transition-base);
  display: flex;
  flex-direction: column;
}

.product:hover {
  background: var(--color-bg-elevated);
}

.product__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-sm);
}

.product__icon {
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 700;
  color: var(--color-accent);
  background: var(--color-accent-dim);
  padding: 4px 10px;
  border-radius: 2px;
  letter-spacing: 0.08em;
}

.product__status {
  font-family: var(--font-en);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 2px;
}

.product__status--live {
  color: #34d399;
  background: rgba(52, 211, 153, 0.1);
  border: 1px solid rgba(52, 211, 153, 0.2);
}

.product__name {
  font-family: var(--font-en);
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: var(--spacing-xs);
  letter-spacing: 0.02em;
}

.product__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-sm);
  flex: 1;
}

.product__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.product__tag {
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 500;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  padding: 2px 8px;
  border-radius: 2px;
  letter-spacing: 0.03em;
}

.products__more {
  font-family: var(--font-en);
  font-size: var(--font-size-sm);
  font-weight: 400;
  font-style: italic;
  color: var(--color-text-muted);
  text-align: center;
  margin-top: var(--spacing-lg);
  letter-spacing: 0.05em;
}

/* ========================================
   Technology
======================================== */
.tech__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.tech__category {
  background: var(--color-bg);
  padding: var(--spacing-lg);
}

.tech__category-title {
  font-family: var(--font-en);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--spacing-sm);
}

.tech__items {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tech__item {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  padding: 4px 10px;
  border-radius: 2px;
  letter-spacing: 0.02em;
  transition: all var(--transition-fast);
}

.tech__item:hover {
  background: var(--color-accent-dim);
  border-color: rgba(126, 184, 255, 0.2);
  color: var(--color-white);
}

/* ========================================
   Members
======================================== */
.members__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.member {
  background: var(--color-bg);
  padding: var(--spacing-lg);
  display: flex;
  gap: var(--spacing-md);
  transition: background var(--transition-base);
}

.member:hover {
  background: var(--color-bg-elevated);
}

.member__avatar {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(126, 184, 255, 0.2), rgba(167, 139, 250, 0.2));
  border: 1px solid rgba(126, 184, 255, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
}

.member__initials {
  font-family: var(--font-en);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.05em;
}

.member__info {
  flex: 1;
  min-width: 0;
}

.member__name {
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--color-white);
  margin-bottom: 2px;
  letter-spacing: 0.03em;
}

.member__role {
  font-family: var(--font-en);
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--color-accent);
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-xs);
}

.member__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: var(--spacing-xs);
}

.member__tag {
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 2px 8px;
  border-radius: 2px;
  letter-spacing: 0.03em;
}

.member__bio {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* ========================================
   Company
======================================== */
.company__table {
  width: 100%;
  max-width: 600px;
}

.company__row {
  display: flex;
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-sm) 0;
}

.company__label {
  flex: 0 0 120px;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  font-weight: 400;
}

.company__value {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  font-weight: 400;
}

/* ========================================
   Contact
======================================== */
.contact {
  border-top: 1px solid var(--color-border);
}

.contact__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
}

.contact__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.contact__link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-family: var(--font-en);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-accent);
  letter-spacing: 0.05em;
  padding: 12px 32px;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
  flex-shrink: 0;
}

.contact__link:hover {
  background: var(--color-accent);
  color: var(--color-bg);
}

.contact__arrow {
  transition: transform var(--transition-fast);
}

.contact__link:hover .contact__arrow {
  transform: translateX(4px);
}

/* ========================================
   Footer
======================================== */
.footer {
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer__logo {
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--color-text-muted);
}

.footer__links {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.footer__link {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-text-secondary);
}

.footer__copyright {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-align: center;
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border-light);
}

/* ========================================
   Privacy Policy Page
======================================== */
.page-header {
  padding-top: calc(var(--header-height) + var(--spacing-3xl));
  padding-bottom: var(--spacing-xl);
}

.page-header__title {
  font-family: var(--font-en);
  font-size: var(--font-size-2xl);
  font-weight: 300;
  letter-spacing: 0.08em;
  color: var(--color-white);
  margin-bottom: var(--spacing-xs);
}

.page-header__subtitle {
  font-family: var(--font-en);
  font-size: var(--font-size-xs);
  font-weight: 400;
  letter-spacing: 0.2em;
  color: var(--color-text-muted);
  text-transform: uppercase;
}

.privacy-content {
  max-width: 720px;
  padding-bottom: var(--spacing-3xl);
}

.privacy-content p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 2;
  margin-bottom: var(--spacing-md);
}

.privacy-content h2 {
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--color-white);
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

.privacy-content ul {
  padding-left: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.privacy-content li {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 2;
  position: relative;
  padding-left: var(--spacing-sm);
}

.privacy-content li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-text-muted);
}

/* ========================================
   Responsive
======================================== */
@media (max-width: 767px) {
  .header__nav {
    display: none;
  }

  .hamburger {
    display: block;
  }

  .mobile-menu {
    display: flex;
  }

  .hero__title {
    font-size: clamp(36px, 12vw, 64px);
  }

  .section {
    padding: var(--spacing-2xl) 0;
  }

  .numbers {
    grid-template-columns: repeat(2, 1fr);
  }

  .business__grid {
    grid-template-columns: 1fr;
  }

  .products__grid {
    grid-template-columns: 1fr;
  }

  .tech__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .members__grid {
    grid-template-columns: 1fr;
  }

  .member {
    flex-direction: column;
    align-items: flex-start;
  }

  .contact__inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
  }

  .company__label {
    flex: 0 0 100px;
  }
}