/* ============================================
   LOOPETS - Main Stylesheet
   洗練された遊び心のあるデザイン
   ============================================ */

/* --------------------------------------------
   CSS Custom Properties
   -------------------------------------------- */
:root {
  /* Colors */
  --color-primary: #0a0a0a;
  --color-secondary: #8b7355;
  --color-accent: #e8dcc4;
  --color-background: #f8f6f3;
  --color-background-alt: #efeae3;
  --color-text: #1a1a1a;
  --color-text-light: #555555;
  --color-text-muted: #888888;
  --color-white: #ffffff;
  --color-border: #d4cfc6;

  /* Typography */
  --font-family-sans: 'Noto Sans JP', -apple-system, sans-serif;
  --font-family-display: 'Inter', sans-serif;

  /* Font Sizes */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3.5rem;
  --font-size-6xl: 5rem;
  --font-size-7xl: 7rem;
  --font-size-8xl: 10rem;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  --spacing-4xl: 8rem;
  --spacing-section: clamp(100px, 15vw, 200px);

  /* Container */
  --container-max-width: 1400px;
  --container-padding: clamp(20px, 5vw, 60px);

  /* Transitions */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);

  /* Z-index */
  --z-cursor: 9999;
  --z-header: 1000;
  --z-modal: 2000;
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

html.lenis, html.lenis body {
  height: auto;
}

.lenis.lenis-smooth {
  scroll-behavior: auto !important;
}

body {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-base);
  line-height: 2;
  letter-spacing: 0.05em;
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a, button {
  cursor: pointer;
}

img, picture, video, svg {
  display: block;
  max-width: 100%;
}

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

button {
  font: inherit;
  background: none;
  border: none;
  cursor: none;
}

ul, ol {
  list-style: none;
}

/* Selection */
::selection {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* --------------------------------------------
   Typography
   -------------------------------------------- */
.text-display {
  font-family: var(--font-family-display);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.03em;
}

.text-body {
  line-height: 2;
  letter-spacing: 0.04em;
}

.text-label {
  font-family: var(--font-family-display);
  font-size: var(--font-size-xs);
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

/* Split Text Animation */
.split-text {
  overflow: hidden;
}

.split-text .char {
  display: inline-block;
  transform: translateY(100%);
  opacity: 0;
}

.split-text.is-visible .char {
  transform: translateY(0);
  opacity: 1;
}

/* --------------------------------------------
   Layout
   -------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

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

/* --------------------------------------------
   Header
   -------------------------------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  padding: var(--spacing-md) 0;
  mix-blend-mode: difference;
}

.header__inner {
  display: flex;
  align-items: center;
}

.header__logo {
  margin-right: auto;
}

.header__logo-img {
  height: 24px;
  width: auto;
}

.header__nav {
  display: flex;
  gap: var(--spacing-xl);
  margin-right: var(--spacing-xl);
}

.header__nav-link {
  font-size: var(--font-size-xs);
  letter-spacing: 0.15em;
  color: var(--color-white);
  position: relative;
  padding: 4px 0;
}

.header__nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--color-white);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.5s var(--ease-out-expo);
}

.header__nav-link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

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

.header__menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.header__menu-btn span {
  width: 24px;
  height: 1px;
  background: var(--color-white);
  transition: transform 0.4s var(--ease-out-expo);
}

@media (max-width: 768px) {
  .header__nav { display: none; }
  .header__menu-btn { display: flex; }
}

/* Custom Cart Icon in Header */
.header__cart-btn {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
  transition: opacity 0.3s ease;
}

.header__cart-btn:hover {
  opacity: 0.7;
}

.header__cart-btn svg {
  width: 22px;
  height: 22px;
  stroke: var(--color-white);
  fill: none;
}

.header__cart-count {
  position: absolute;
  top: 2px;
  right: 2px;
  min-width: 16px;
  height: 16px;
  padding: 0 4px;
  background: var(--color-secondary);
  color: var(--color-white);
  font-size: 10px;
  font-weight: 600;
  line-height: 16px;
  text-align: center;
  border-radius: 8px;
  opacity: 0;
  transform: scale(0.5);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.header__cart-count.is-visible {
  opacity: 1;
  transform: scale(1);
}

/* Hide Shopify default toggle icon */
#shopify-cart-container {
  display: none;
}

/* Ensure Shopify cart drawer still works */
.shopify-buy-frame--cart {
  z-index: var(--z-modal) !important;
}

/* Shopify Buy Button - Product Page */
.product-actions [id^="product-component"] {
  text-align: left;
}

.product-actions [id^="product-component"] iframe {
  margin-left: 0 !important;
}

.product-actions .shopify-buy-frame--product {
  margin-left: 0 !important;
}

@media (max-width: 768px) {
  .product-actions [id^="product-component"] {
    text-align: center;
  }

  .product-actions [id^="product-component"] iframe {
    margin-left: auto !important;
    margin-right: auto !important;
  }

  .product-actions .shopify-buy-frame--product {
    margin-left: auto !important;
    margin-right: auto !important;
  }
}


/* Mobile Nav */
.mobile-nav {
  position: fixed;
  inset: 0;
  background: var(--color-primary);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.6s var(--ease-out-expo), visibility 0.6s;
}

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

.mobile-nav__close {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  width: 48px;
  height: 48px;
  color: var(--color-white);
}

.mobile-nav__list {
  text-align: center;
}

.mobile-nav__link {
  display: block;
  font-family: var(--font-family-display);
  font-size: var(--font-size-3xl);
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--color-white);
  padding: var(--spacing-md) 0;
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.6s var(--ease-out-expo), transform 0.6s var(--ease-out-expo);
}

.mobile-nav.is-open .mobile-nav__link {
  opacity: 1;
  transform: translateY(0);
}

.mobile-nav.is-open .mobile-nav__link:nth-child(1) { transition-delay: 0.1s; }
.mobile-nav.is-open .mobile-nav__link:nth-child(2) { transition-delay: 0.15s; }
.mobile-nav.is-open .mobile-nav__link:nth-child(3) { transition-delay: 0.2s; }
.mobile-nav.is-open .mobile-nav__link:nth-child(4) { transition-delay: 0.25s; }

/* --------------------------------------------
   Hero
   -------------------------------------------- */
.hero {
  min-height: 100vh;
  min-height: 100dvh;
  position: relative;
  overflow: hidden;
}

.hero__images {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.hero__image-left,
.hero__image-right {
  position: relative;
  overflow: hidden;
}

.hero__image-left img,
.hero__image-right img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__gradient {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to right, rgba(10,10,10,0.1) 0%, rgba(10,10,10,0.5) 35%, rgba(10,10,10,0.5) 65%, rgba(10,10,10,0.1) 100%),
    linear-gradient(to bottom, transparent 70%, rgba(10,10,10,0.7) 100%);
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 2;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: var(--spacing-4xl) var(--container-padding);
}

.hero__label {
  font-family: var(--font-family-display);
  font-size: var(--font-size-xs);
  font-weight: 400;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--spacing-xl);
}

.hero__title {
  font-family: var(--font-family-sans);
  font-size: clamp(var(--font-size-3xl), 6vw, var(--font-size-5xl));
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0.08em;
  color: var(--color-white);
  margin-bottom: var(--spacing-xl);
}

.hero__title-line {
  display: block;
  overflow: hidden;
}

.hero__title-text {
  display: block;
}

.hero__subtitle {
  font-size: var(--font-size-base);
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.7);
  margin-bottom: var(--spacing-2xl);
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-md);
  color: var(--color-white);
  font-size: var(--font-size-xs);
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.hero__cta-icon {
  width: 48px;
  height: 48px;
  border: 1px solid rgba(255,255,255,0.4);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.4s var(--ease-out-expo), border-color 0.4s;
}

.hero__cta:hover .hero__cta-icon {
  background-color: var(--color-white);
  border-color: var(--color-white);
}

.hero__cta:hover .hero__cta-icon svg {
  stroke: var(--color-primary);
}

.hero__cta-icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--color-white);
  transition: stroke 0.4s;
}

/* Scroll Indicator */
.hero__scroll {
  position: absolute;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: rgba(255,255,255,0.5);
  font-size: var(--font-size-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.hero__scroll-line {
  width: 60px;
  height: 1px;
  background: rgba(255,255,255,0.2);
  position: relative;
  overflow: hidden;
}

.hero__scroll-line::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: var(--color-white);
  animation: scroll-progress 2s var(--ease-in-out) infinite;
}

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

@media (max-width: 768px) {
  .hero__images {
    grid-template-columns: 1fr;
  }

  .hero__image-right {
    display: none;
  }

  .hero__title {
    font-size: clamp(var(--font-size-2xl), 8vw, var(--font-size-4xl));
  }
}

/* --------------------------------------------
   Story Section
   -------------------------------------------- */
.story {
  background: var(--color-background);
}

.story__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4xl);
  align-items: center;
}

.story__content {
  max-width: 500px;
}

.story__label {
  margin-bottom: var(--spacing-md);
}

.story__title {
  font-family: var(--font-family-sans);
  font-size: clamp(var(--font-size-2xl), 4vw, var(--font-size-3xl));
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0.06em;
  margin-bottom: var(--spacing-xl);
}

.story__text {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-xl);
}

.story__text p + p {
  margin-top: var(--spacing-md);
}

.story__visual {
  position: relative;
  height: 600px;
}

.story__image {
  position: absolute;
  overflow: hidden;
  border-radius: 8px;
}

.story__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1s var(--ease-out-expo);
}

.story__image:hover img {
  transform: scale(1.05);
}

.story__image--1 {
  width: 70%;
  height: 70%;
  top: 0;
  left: 0;
  z-index: 2;
}

.story__image--2 {
  width: 50%;
  height: 50%;
  bottom: 0;
  right: 0;
  z-index: 1;
}

@media (max-width: 768px) {
  .story__inner {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  .story__visual {
    height: 400px;
    order: -1;
  }
}

/* --------------------------------------------
   Products Section
   -------------------------------------------- */
.products {
  background: var(--color-primary);
  color: var(--color-white);
}

.products__header {
  display: flex;
  justify-content: space-between;
  align-items: end;
  margin-bottom: var(--spacing-3xl);
}

.products__title {
  font-family: var(--font-family-display);
  font-size: clamp(var(--font-size-2xl), 5vw, var(--font-size-4xl));
  font-weight: 300;
  letter-spacing: 0.15em;
}

.products__link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.5;
  transition: opacity 0.4s;
}

.products__link:hover {
  opacity: 1;
}

.products__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

@media (max-width: 992px) {
  .products__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .products__grid {
    grid-template-columns: 1fr;
  }

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

/* Product Card */
.product-card {
  position: relative;
  background: rgba(255,255,255,0.05);
  border-radius: 12px;
  overflow: hidden;
  transition: background-color 0.4s var(--ease-out-expo);
}

.product-card:hover {
  background: rgba(255,255,255,0.1);
}

.product-card__image {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
}

.product-card__image-inner {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-accent) 100%);
  transition: transform 0.5s ease-out;
  will-change: transform;
}

.product-card:hover .product-card__image-inner {
  transform: scale(1.1);
}

.product-card__badge {
  position: absolute;
  top: var(--spacing-md);
  left: var(--spacing-md);
  padding: 6px 12px;
  background: var(--color-white);
  color: var(--color-primary);
  font-size: var(--font-size-xs);
  font-weight: 500;
  letter-spacing: 0.05em;
  border-radius: 4px;
}

.product-card__content {
  padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-xl);
}

.product-card__category {
  font-size: var(--font-size-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.5;
  margin-bottom: var(--spacing-sm);
}

.product-card__title {
  font-size: var(--font-size-lg);
  font-weight: 500;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-sm);
}

.product-card__price {
  font-family: var(--font-family-display);
  font-size: var(--font-size-base);
  font-weight: 400;
  letter-spacing: 0.08em;
}

.product-card__arrow {
  position: absolute;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateX(-10px);
  transition: opacity 0.4s var(--ease-out-expo), transform 0.4s var(--ease-out-expo), background-color 0.4s;
}

.product-card:hover .product-card__arrow {
  opacity: 1;
  transform: translateX(0);
}

.product-card__arrow:hover {
  background: var(--color-white);
}

.product-card__arrow:hover svg {
  stroke: var(--color-primary);
}

.product-card__arrow svg {
  width: 16px;
  height: 16px;
  stroke: var(--color-white);
  transition: stroke 0.4s;
}

/* --------------------------------------------
   Quality Section
   -------------------------------------------- */
.quality {
  background: var(--color-background-alt);
  overflow: hidden;
}

.quality__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.quality__content {
  max-width: 540px;
}

.quality__title {
  font-family: var(--font-family-sans);
  font-size: clamp(var(--font-size-2xl), 4vw, var(--font-size-3xl));
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0.06em;
  margin-bottom: var(--spacing-2xl);
}

.quality__list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

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

.quality__item-number {
  font-family: var(--font-family-display);
  font-size: clamp(3rem, 6vw, 4.5rem);
  font-weight: 300;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-primary);
  opacity: 0.9;
  flex-shrink: 0;
}

.quality__item-content {
  padding-top: 0.5rem;
}

.quality__item-title {
  font-weight: 500;
  font-size: var(--font-size-base);
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-xs);
}

.quality__item-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 1.8;
  letter-spacing: 0.04em;
}

.quality__visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.quality__wagyu-image {
  width: 100%;
  max-width: 560px;
  height: auto;
  object-fit: contain;
  border-radius: 12px;
}

@media (max-width: 768px) {
  .quality__inner {
    grid-template-columns: 1fr;
  }

  .quality__visual {
    order: -1;
    margin-bottom: var(--spacing-xl);
  }

  .quality__wagyu-image {
    max-width: 100%;
  }

  .quality__item-number {
    font-size: 3rem;
  }
}

/* --------------------------------------------
   CTA Section
   -------------------------------------------- */
.cta {
  background: var(--color-primary);
  color: var(--color-white);
  text-align: center;
  padding: var(--spacing-4xl) 0;
}

.cta__title {
  font-family: var(--font-family-sans);
  font-size: clamp(var(--font-size-2xl), 5vw, var(--font-size-4xl));
  font-weight: 500;
  letter-spacing: 0.08em;
  margin-bottom: var(--spacing-xl);
}

.cta__text {
  color: rgba(255,255,255,0.6);
  max-width: 400px;
  letter-spacing: 0.06em;
  line-height: 2;
  margin: 0 auto var(--spacing-2xl);
}

/* --------------------------------------------
   Footer
   -------------------------------------------- */
.footer {
  background: var(--color-background);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-3xl);
}

.footer__brand {
  max-width: 280px;
}

.footer__logo {
  display: block;
  margin-bottom: var(--spacing-lg);
}

.footer__logo-img {
  height: 72px;
  width: auto;
}

.footer__tagline {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 2;
  letter-spacing: 0.04em;
}

.footer__heading {
  font-size: var(--font-size-xs);
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--spacing-md);
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer__link {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  letter-spacing: 0.04em;
  transition: color 0.3s;
}

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

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border);
}

.footer__copyright {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.footer__social {
  display: flex;
  gap: var(--spacing-md);
}

.footer__social-link {
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.3s, background-color 0.3s;
}

.footer__social-link:hover {
  border-color: var(--color-primary);
  background-color: var(--color-primary);
}

.footer__social-link:hover svg {
  stroke: var(--color-white);
}

.footer__social-link svg {
  width: 18px;
  height: 18px;
  stroke: var(--color-text);
  transition: stroke 0.3s;
}

@media (max-width: 768px) {
  .footer__inner {
    grid-template-columns: 1fr 1fr;
  }

  .footer__brand {
    grid-column: span 2;
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--spacing-md);
  }
}

/* --------------------------------------------
   Buttons
   -------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 18px 40px;
  font-size: var(--font-size-xs);
  font-weight: 400;
  letter-spacing: 0.15em;
  border-radius: 4px;
  transition: all 0.4s var(--ease-out-expo);
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--color-white);
  color: var(--color-primary);
}

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

.btn--outline {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.btn--outline:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

.btn--dark {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn--dark:hover {
  background: var(--color-secondary);
}

/* --------------------------------------------
   Utilities
   -------------------------------------------- */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* Placeholder Image */
.placeholder-image {
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-accent) 100%);
}

/* Image Cover */
.image-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* --------------------------------------------
   Animation Initial States (FOUC防止)
   -------------------------------------------- */
.story__image,
.story__content,
.product-card,
.quality__item,
.products__title,
.quality__title,
.story__title,
.quality__wagyu-image {
  opacity: 0;
}

.story__image {
  transform: translateY(100px);
}

.story__content {
  transform: translateX(-60px);
}

.product-card {
  transform: translateY(80px);
}

.quality__item {
  transform: translateY(40px);
}

.products__title,
.quality__title,
.story__title {
  transform: translateY(60px);
}

.quality__wagyu-image {
  transform: translateY(30px);
}

/* Reduced motion: 初期状態を解除 */
@media (prefers-reduced-motion: reduce) {
  .story__image,
  .story__content,
  .product-card,
  .quality__item,
  .products__title,
  .quality__title,
  .story__title,
  .quality__wagyu-image {
    opacity: 1;
    transform: none;
  }
}

/* --------------------------------------------
   Reduced Motion
   -------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .marquee__track {
    animation: none;
  }

  .hero__scroll-line::after {
    animation: none;
  }
}

/* --------------------------------------------
   Product Page Specific
   -------------------------------------------- */
.product-hero {
  padding-top: 120px;
  padding-bottom: var(--spacing-3xl);
  background: var(--color-background);
}

.product-hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: start;
}

.product-gallery__main {
  aspect-ratio: 1;
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: var(--spacing-md);
  background: var(--color-background-alt);
}

.product-gallery__main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-gallery__thumbs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-sm);
}

.product-gallery__thumb {
  aspect-ratio: 1;
  border-radius: 8px;
  overflow: hidden;
  opacity: 0.5;
  transition: opacity 0.3s;
  cursor: pointer;
  background: var(--color-background-alt);
}

.product-gallery__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-gallery__thumb.is-active,
.product-gallery__thumb:hover {
  opacity: 1;
}

.product-info__category {
  font-size: var(--font-size-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
}

.product-info__title {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-2xl);
  font-weight: 500;
  letter-spacing: 0.06em;
  margin-bottom: var(--spacing-lg);
}

.product-info__price {
  font-family: var(--font-family-display);
  font-size: var(--font-size-xl);
  font-weight: 400;
  letter-spacing: 0.08em;
  margin-bottom: var(--spacing-xl);
}

.product-info__description {
  color: var(--color-text-light);
  letter-spacing: 0.04em;
  line-height: 2;
  margin-bottom: var(--spacing-xl);
}

.product-info__features {
  padding: var(--spacing-lg);
  background: var(--color-background-alt);
  border-radius: 12px;
  margin-bottom: var(--spacing-xl);
}

.product-info__features-title {
  font-size: var(--font-size-sm);
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
}

.product-info__features-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.product-info__features-item {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.product-info__features-item::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-secondary);
  border-radius: 50%;
}

.product-quantity {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.product-quantity__label {
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.product-quantity__controls {
  display: flex;
  align-items: center;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
}

.product-quantity__btn {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  transition: background-color 0.3s;
  cursor: pointer;
}

.product-quantity__btn:hover {
  background: var(--color-background-alt);
}

.product-quantity__value {
  width: 60px;
  text-align: center;
  font-weight: 500;
  border-left: 1px solid var(--color-border);
  border-right: 1px solid var(--color-border);
}

.shopify-buy-button .btn {
  width: 100%;
}

@media (max-width: 768px) {
  .product-hero__inner {
    grid-template-columns: 1fr;
  }
}

/* Product Details Tabs */
.product-details {
  padding: var(--spacing-3xl) 0;
  border-top: 1px solid var(--color-border);
}

.product-details__tabs {
  display: flex;
  gap: var(--spacing-xl);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--spacing-xl);
}

.product-details__tab {
  padding: var(--spacing-md) 0;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  position: relative;
  cursor: pointer;
  transition: color 0.3s;
}

.product-details__tab::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transition: transform 0.4s var(--ease-out-expo);
}

.product-details__tab.is-active,
.product-details__tab:hover {
  color: var(--color-text);
}

.product-details__tab.is-active::after {
  transform: scaleX(1);
}

.product-details__content {
  display: none;
  max-width: 800px;
}

.product-details__content.is-active {
  display: block;
}

.product-details__table {
  width: 100%;
  border-collapse: collapse;
}

.product-details__table th,
.product-details__table td {
  padding: var(--spacing-sm);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--font-size-sm);
}

.product-details__table th {
  width: 30%;
  font-weight: 500;
}

.product-details__table td {
  color: var(--color-text-light);
}

/* Related Products */
.related-products {
  background: var(--color-background-alt);
  padding: var(--spacing-3xl) 0;
}

.related-products .section-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.related-products .section-header__label {
  font-size: var(--font-size-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-sm);
}

.related-products .section-header__title {
  font-family: var(--font-family-display);
  font-size: var(--font-size-2xl);
  font-weight: 600;
}

.related-products .products-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
  max-width: 800px;
  margin: 0 auto;
}

.related-products .product-card {
  background: var(--color-white);
}

.related-products .product-card:hover {
  background: var(--color-white);
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.related-products .product-card__content {
  color: var(--color-text);
}

.related-products .product-card__arrow {
  border-color: var(--color-border);
}

.related-products .product-card__arrow svg {
  stroke: var(--color-text);
}