/* --- CSS Variables --- */
:root {
  --color-brand-50: #f4f6fc;
  --color-brand-100: #eef2ff;
  --color-brand-300: #c7d2fe;
  --color-brand-500: #818cf8;
  --color-brand-700: #4338ca;
  --color-brand-900: #312e81;
  --color-text-main: #1e293b; /* slate-800 */
  --color-text-sub: #475569; /* slate-600 */
  --color-white: #fff;
  --color-gray-100: #f3f4f6;
  --color-sale-red: #e11d48; /* Sale Color */
  --font-sans: "Noto Sans JP", sans-serif;
  --font-montserrat: "Montserrat", sans-serif;
  --container-width: 1280px;
  --gutter: 1.5rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  line-height: 1.6;
  color: var(--color-text-main);
  background-color: var(--color-brand-50);
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s ease;
}

ul {
  list-style: none;
}

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

/* --- Typography --- */
h1,
h2,
h3,
h4 {
  font-family: var(--font-montserrat);
  line-height: 1.2;
  letter-spacing: 0.05em;
}

.section-title-wrapper {
  margin-bottom: 3rem;
  text-align: center;
}

.section-label {
  display: block;
  margin-bottom: 0.5rem;
  font-family: var(--font-montserrat);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-brand-700);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.section-title {
  font-size: clamp(2rem, 1.885rem + 0.513vw, 2.5rem);
  font-weight: 700;
  color: var(--color-text-main);
}

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

section {
  padding: 4rem 0;
}

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

.bg-brand-50 {
  background-color: var(--color-brand-50);
}

.bg-brand-900 {
  color: var(--color-white);
  background-color: var(--color-brand-900);
}

.grid {
  display: grid;
  gap: 2rem;
}

/* Responsive Grid */
@media (width >= 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}
/* --- Slider (CSS Scroll Snap) --- */
.slider-wrapper {
  position: relative;
  width: auto;
  margin: 0 -1.5rem; /* Mobile: Pull to edges (gutter is 1.5rem) */
}

.product-slider {
  display: flex;
  gap: 1rem;
  padding: 0 1.5rem 2rem; /* Mobile: Add side padding to match gutter */
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  /* Hide scrollbar */
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.product-slider::-webkit-scrollbar {
  display: none;
}

@media (width >= 768px) {
  /* Desktop/Tablet: Reset to container width */
  .slider-wrapper {
    margin: 0;
  }
  .product-slider {
    gap: 2rem;
    padding: 0 0 2rem; /* Remove side padding as it's inside container */
  }
}
.product-slider .product-card {
  flex: 0 0 85%; /* Mobile: 85% width */
  min-width: 0;
  scroll-snap-align: center;
}

@media (width >= 640px) {
  .product-slider .product-card {
    flex: 0 0 45%; /* Tablet: 45% width */
    scroll-snap-align: start;
  }
}
@media (width >= 1024px) {
  .product-slider .product-card {
    flex: 0 0 29%; /* Desktop: Show ~3.2 items */
    scroll-snap-align: start;
  }
}
/* Slider Navigation Buttons */
.slider-nav-btn {
  position: absolute;
  top: 40%; /* Align with image center roughly */
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  font-size: 1.5rem;
  color: var(--color-brand-900);
  cursor: pointer;
  background-color: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--color-brand-100);
  border-radius: 50%;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  transform: translateY(-50%);
  transition: all 0.3s ease;
}

.slider-nav-btn:hover {
  color: var(--color-white);
  background-color: var(--color-brand-900);
}

.slider-nav-btn.prev {
  left: 1rem;
}

.slider-nav-btn.next {
  right: 1rem;
}

/* Hide buttons on mobile if touch is preferred, or keep them.
           Let's keep them visible but ensure they don't block content too much */
@media (width <= 768px) {
  .slider-nav-btn {
    width: 2.5rem;
    height: 2.5rem;
    font-size: 1.25rem;
    background-color: rgba(255, 255, 255, 0.95);
  }
  .slider-nav-btn.prev {
    left: 0.5rem;
  }
  .slider-nav-btn.next {
    right: 0.5rem;
  }
}
/* --- Components --- */
/* Buttons */
.btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  font-family: var(--font-montserrat);
  font-weight: 600;
  text-align: center;
  letter-spacing: 0.1em;
  cursor: pointer;
  border-radius: 2px;
  transition: all 0.3s ease;
}

.btn-primary {
  color: var(--color-white);
  background-color: rgba(49, 46, 129, 0.9); /* brand-900 with opacity */
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  -webkit-backdrop-filter: blur(4px);
          backdrop-filter: blur(4px);
}

.btn-primary:hover {
  background-color: var(--color-brand-700);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
}

.btn-icon {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.25rem;
  font-family: var(--font-montserrat);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-white);
  cursor: pointer;
  background-color: var(--color-brand-900);
  border: none;
  border-radius: 9999px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  transition: background-color 0.3s;
}

.btn-icon i {
  font-size: 1.25rem;
}

.btn-icon:hover {
  background-color: var(--color-brand-700);
}

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

.hero-video-container {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
}

.hero-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  background-image: linear-gradient(to bottom, transparent, rgba(255, 255, 255, 0.5));
}

.hero-content {
  position: relative;
  z-index: 10;
  padding: 0 1rem;
  text-align: center;
}

.hero-logo {
  max-width: 800px;
  margin-inline: auto;
  margin-bottom: 3rem;
  text-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.hero-subtitle {
  margin-bottom: 1rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  letter-spacing: 0.3em;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-title {
  margin-bottom: 1.5rem;
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  color: var(--color-white);
  text-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

.hero-title-br {
  display: block;
}

@media (width >= 768px) {
  .hero-title-br {
    display: none;
  }
}
@media (width >= 768px) {
  .hero-title {
    font-size: 5rem;
  }
  .hero-logo {
    font-size: 2.5rem;
  }
}
@media (width >= 1024px) {
  .hero-title {
    font-size: 7rem;
  }
}
.hero-desc {
  margin-bottom: 2.5rem;
  font-size: 1.125rem;
  font-weight: 500;
  line-height: 1.8;
  color: var(--color-white);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.scroll-down {
  position: absolute;
  right: 0;
  bottom: 2rem;
  left: 0;
  z-index: 10;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  width: -webkit-fit-content;
  width: fit-content;
  margin: 0 auto;
  color: var(--color-white);
  text-decoration: none;
  opacity: 0.8;
  transition: opacity 0.3s;
}
.scroll-down:hover {
  opacity: 1;
}
.scroll-down span {
  font-family: var(--font-montserrat);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
}
.scroll-down .scroll-line {
  position: relative;
  width: 1px;
  height: 4rem;
  overflow: hidden;
  background-color: rgba(255, 255, 255, 0.3);
}
.scroll-down .scroll-line::after {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  content: "";
  background-color: var(--color-white);
  transform: translateY(-100%);
  animation: scroll-line 2.5s cubic-bezier(0.77, 0, 0.175, 1) infinite;
}

@keyframes scroll-line {
  0% {
    transform: translateY(-100%);
  }
  100% {
    transform: translateY(100%);
  }
}
/* --- Content Sections --- */
.flex-center-v {
  display: flex;
  align-items: center;
}

/* Concept */
.concept-image-wrapper {
  position: relative;
  overflow: hidden;
  border-radius: 0.5rem;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.concept-image {
  width: 100%;
  height: auto;
}

.concept-content h3 {
  margin-bottom: 1.5rem;
  font-family: var(--font-sans); /* Japanese heading uses Noto Sans */
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-brand-700);
}

.concept-content p {
  margin-bottom: 1.5rem;
  line-height: 2;
  color: var(--color-text-sub);
}

.divider-box {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.divider-line {
  flex: 1;
  height: 1px;
  background-color: #cbd5e1;
}

.divider-text {
  font-family: var(--font-montserrat);
  font-style: italic;
  font-weight: 500;
  color: #94a3b8;
}

/* Movie */
.movie-container {
  position: relative;
  width: 100%;
  height: 0;
  padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
  overflow: hidden;
  background-color: var(--color-gray-100);
  border-radius: 0.5rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}
.movie-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.movie-note {
  margin-top: 0.5rem;
  font-size: 0.75rem;
  color: var(--color-text-sub);
  text-align: right;
}

/* Features */
.feature-card {
  padding: 2.5rem 1.5rem;
  text-align: left;
  background-color: var(--color-white);
  border-radius: 0.75rem;
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
  transition: box-shadow 0.3s ease;
}

.feature-card:hover {
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3.5rem;
  height: 3.5rem;
  margin-bottom: 1.5rem;
  font-size: 2.25rem; /* Increased size 1.875 * 1.2 */
  color: var(--color-brand-700);
  background-color: var(--color-brand-100);
  border-radius: 50%;
}

.feature-card h3 {
  margin-bottom: 1rem;
  font-family: var(--font-montserrat);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-main);
}

.feature-card p {
  line-height: 1.75;
  color: var(--color-text-sub);
}

/* Products */
.products-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 3rem;
}

/* .view-all-link styles removed */
.product-card {
  position: relative;
}

.product-image-wrapper {
  position: relative;
  aspect-ratio: 1/1;
  margin-bottom: 1.5rem;
  overflow: hidden;
  background-color: var(--color-gray-100);
  border-radius: 0.5rem;
}

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

.badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  padding: 0.25rem 0.75rem;
  font-family: var(--font-montserrat);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  background-color: var(--color-brand-900);
  border-radius: 2px;
}

/* Sale Badge Style */
.badge.sale {
  background-color: var(--color-sale-red);
}

/* .product-info styles removed */
/* .product-action removed */
.product-jp-name {
  display: block;
  margin-bottom: 0.25rem;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-brand-700);
}

.product-title {
  margin-bottom: 0.25rem;
  font-family: var(--font-montserrat); /* English product names */
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--color-text-main);
}

.product-desc {
  margin-bottom: 0.75rem;
  font-size: 0.875rem;
  color: #64748b;
}

/* --- Price & Timer Styles --- */
.product-price-box {
  margin-bottom: 0.5rem;
}

.timer-display {
  display: flex;
  gap: 0.25rem;
  align-items: center;
  margin-bottom: 0.25rem;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-sale-red);
}

.timer-display i {
  font-size: 0.875rem;
}

.price-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: baseline;
}

.product-price {
  font-family: var(--font-montserrat);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-brand-700);
}

/* Sale Styles */
.original-price {
  font-family: var(--font-montserrat);
  font-size: 0.875rem;
  color: var(--color-text-sub);
  text-decoration: line-through;
}

.sale-price {
  font-family: var(--font-montserrat);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-sale-red);
}

/* Expired Sale State */
.product-price-box.expired .timer-display {
  display: none;
}

.product-price-box.expired .sale-price {
  display: none;
}

.product-price-box.expired .original-price {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-brand-700);
  text-decoration: none;
}

.product-price-box.expired ~ .product-image-wrapper .badge.sale {
  display: none;
}

.action-row {
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  margin-top: 0.5rem;
}

.product-detail-link {
  font-family: var(--font-montserrat);
  font-size: 0.75rem;
  color: var(--color-text-sub);
  white-space: nowrap;
  text-decoration: underline;
}

.product-detail-link:hover {
  color: var(--color-brand-700);
}

/* Vision */
.vision-grid {
  display: grid;
  gap: 4rem;
}

@media (width >= 768px) {
  .vision-grid {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
}
.vision-content h2 {
  margin-bottom: 2rem;
  font-family: var(--font-sans); /* Japanese Heading */
  font-size: 2.25rem;
  font-weight: 700;
}

.vision-content p {
  margin-bottom: 1.5rem;
  line-height: 2;
  color: var(--color-brand-100);
}

.check-list li {
  display: flex;
  align-items: center;
  margin-bottom: 1rem;
  color: var(--color-brand-50);
}

.check-list i {
  margin-right: 0.75rem;
  font-size: 1.5rem; /* Increased size 1.25 * 1.2 */
  color: var(--color-brand-300);
}

.vision-image-container {
  position: relative;
  height: 24rem;
  overflow: hidden;
  border: 1px solid var(--color-brand-700);
  border-radius: 0.5rem;
}

@media (width >= 768px) {
  .vision-image-container {
    height: 600px;
  }
}
.vision-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.6;
  transition: opacity 0.7s;
}

.vision-image-container:hover .vision-image {
  opacity: 1;
}

.vision-circle {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.circle-text {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 8rem;
  height: 8rem;
  font-family: var(--font-montserrat);
  font-size: 1.5rem;
  font-weight: 500;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  -webkit-backdrop-filter: blur(4px);
          backdrop-filter: blur(4px);
}

/* Reviews */
.review-card {
  padding: 2rem;
  background-color: var(--color-white);
  border-radius: 0.5rem;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.review-product-name {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  margin-bottom: 1rem;
  font-family: var(--font-montserrat);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-brand-700);
  background-color: var(--color-brand-100);
  border-radius: 9999px;
}

.stars {
  display: flex;
  gap: 2px;
  margin-bottom: 1rem;
  color: #facc15; /* yellow-400 */
}

.review-text {
  margin-bottom: 1.5rem;
  font-style: italic;
  color: var(--color-text-sub);
}

.review-author {
  font-family: var(--font-montserrat);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-text-main);
}

.review-author span {
  margin-left: 0.5rem;
  font-family: var(--font-sans);
  font-weight: 400;
  color: #94a3b8;
}

/* Gallery */
.gallery-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (width >= 768px) {
  .gallery-grid {
    grid-template-rows: 20rem 20rem;
    grid-template-columns: 1.5fr 1fr;
    height: 41.5rem; /* 20 + 20 + 1.5 gap */
  }
  .gallery-item-large {
    grid-row: 1/3;
    grid-column: 1/2;
  }
}
.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 0.5rem;
}

.gallery-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 1.5rem;
  font-family: var(--font-montserrat);
  font-size: 0.875rem;
  color: var(--color-white);
  background: linear-gradient(to top, rgba(0, 0, 0, 0.6), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.gallery-item:hover .gallery-caption {
  opacity: 1;
}

/* FAQ */
.faq-container {
  max-width: 48rem;
  margin: 0 auto;
}

details {
  margin-bottom: 1.5rem;
  overflow: hidden;
  background-color: var(--color-gray-100);
  border-radius: 0.5rem;
}

summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem;
  font-weight: 500;
  cursor: pointer;
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

summary i {
  font-size: 1.25rem; /* Increased arrow size */
  transition: transform 0.3s;
}

details[open] summary i {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 1.5rem 1.5rem;
  line-height: 1.75;
  color: var(--color-text-sub);
}

/* --- Animations --- */
.fade-in-up {
  opacity: 0;
  transform: translateY(20px);
  animation: fade-in-up 0.8s ease-out forwards;
}

@keyframes fade-in-up {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.delay-100 {
  animation-delay: 0.1s;
}

.delay-200 {
  animation-delay: 0.2s;
}

.delay-300 {
  animation-delay: 0.3s;
}/*# sourceMappingURL=brand_airtech.css.map */