/* ========================================
   野崎エコ産業株式会社 - Corporate Website
   Design: Japanese Traditional + Modern
   Color: Indigo, Vermillion, Gold, Washi
   ======================================== */

/* --- CSS Variables --- */
:root {
  --color-indigo: #1a2332;
  --color-indigo-light: #2a3a52;
  --color-vermillion: #C53D43;
  --color-vermillion-dark: #9E2F34;
  --color-gold: #C9A96E;
  --color-gold-light: #DFC59A;
  --color-washi: #F5F0E8;
  --color-washi-dark: #E8E0D0;
  --color-ink: #1a1a1a;
  --color-ink-light: #3a3a3a;
  --color-snow: #FAFAFA;
  --color-cloud: #F0EDE6;

  --font-serif: 'Zen Old Mincho', 'Noto Serif JP', serif;
  --font-sans: 'Noto Sans JP', sans-serif;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  --spacing-xxl: 10rem;

  --max-width: 1200px;
  --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--color-ink);
  background: var(--color-snow);
  line-height: 1.8;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

/* --- Navigation --- */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.2rem 0;
  transition: var(--transition);
}

#navbar.scrolled {
  background: rgba(26, 35, 50, 0.95);
  backdrop-filter: blur(12px);
  padding: 0.8rem 0;
  box-shadow: 0 2px 20px rgba(0,0,0,0.15);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.logo-kanji {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.logo-sub {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--color-gold-light);
  letter-spacing: 0.15em;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2.5rem;
}

.nav-links a {
  color: rgba(255,255,255,0.85);
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  position: relative;
  transition: color 0.3s;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-gold);
  transition: width 0.3s;
}

.nav-links a:hover {
  color: #fff;
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: #fff;
  transition: var(--transition);
}

/* --- Hero Section --- */
#hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

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

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  transform: scale(1.05);
  animation: heroZoom 20s ease-out forwards;
}

@keyframes heroZoom {
  from { transform: scale(1.1); }
  to { transform: scale(1.0); }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(26, 35, 50, 0.4) 0%,
    rgba(26, 35, 50, 0.2) 40%,
    rgba(26, 35, 50, 0.5) 80%,
    rgba(26, 35, 50, 0.8) 100%
  );
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: #fff;
  padding: 0 2rem;
}

.hero-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2rem;
  opacity: 0;
  animation: fadeInUp 1s 0.5s forwards;
}

.badge-line {
  display: block;
  width: 40px;
  height: 1px;
  background: var(--color-gold);
}

.badge-text {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  color: var(--color-gold-light);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.12em;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeInUp 1s 0.8s forwards;
}

.title-main {
  display: block;
}

.hero-subtitle {
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
  letter-spacing: 0.3em;
  color: var(--color-gold-light);
  margin-bottom: 0.5rem;
  opacity: 0;
  animation: fadeInUp 1s 1.1s forwards;
}

.hero-en {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  letter-spacing: 0.25em;
  color: rgba(255,255,255,0.6);
  opacity: 0;
  animation: fadeInUp 1s 1.3s forwards;
}

.hero-scroll {
  position: absolute;
  bottom: 3rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255,255,255,0.5);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  opacity: 0;
  animation: fadeInUp 1s 1.8s forwards;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-gold), transparent);
  animation: scrollPulse 2s infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 1; transform: scaleY(1); }
  50% { opacity: 0.5; transform: scaleY(0.6); }
}

.hero-seal {
  position: absolute;
  top: 2rem;
  right: 3rem;
  width: 80px;
  height: 80px;
  z-index: 2;
  opacity: 0;
  animation: fadeInUp 1s 1.5s forwards;
}

/* --- Section Common --- */
.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-xxl) 2rem;
}

.section-header {
  display: flex;
  align-items: flex-end;
  gap: 1.5rem;
  margin-bottom: var(--spacing-xl);
}

.section-header.light {
  color: #fff;
}

.section-number {
  font-family: var(--font-serif);
  font-size: 4rem;
  font-weight: 700;
  color: var(--color-washi-dark);
  line-height: 1;
}

.section-header.light .section-number {
  color: rgba(255,255,255,0.15);
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 600;
  letter-spacing: 0.1em;
  line-height: 1.3;
}

.section-title-en {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  color: var(--color-gold);
  margin-top: 0.3rem;
}

.section-header.light .section-title-en {
  color: var(--color-gold-light);
}

/* --- About Section --- */
#about {
  background: var(--color-snow);
}

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

.about-image {
  position: relative;
  overflow: hidden;
}

.about-image img {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
  transition: transform 0.8s ease;
}

.about-image:hover img {
  transform: scale(1.03);
}

.image-frame {
  position: absolute;
  inset: 12px;
  border: 1px solid rgba(197, 61, 67, 0.3);
  pointer-events: none;
}

.about-lead {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  line-height: 2;
  margin-bottom: var(--spacing-md);
  color: var(--color-ink);
  letter-spacing: 0.05em;
}

.about-text {
  font-size: 0.95rem;
  line-height: 2;
  color: var(--color-ink-light);
  margin-bottom: 1.5rem;
}

.about-info-grid {
  margin-top: var(--spacing-lg);
  border-top: 1px solid var(--color-washi-dark);
  padding-top: var(--spacing-md);
}

.info-item {
  display: flex;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--color-cloud);
}

.info-label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-vermillion);
  min-width: 100px;
  letter-spacing: 0.05em;
}

.info-value {
  font-size: 0.9rem;
  color: var(--color-ink-light);
}

/* --- Business Section --- */
#business {
  position: relative;
  background: var(--color-indigo);
  overflow: hidden;
}

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

.business-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.08;
}

.business-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(26, 35, 50, 0.95),
    rgba(42, 58, 82, 0.9)
  );
  z-index: 1;
}

#business .section-inner {
  position: relative;
  z-index: 2;
}

.business-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.biz-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 2.5rem 2rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.biz-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
  opacity: 0;
  transition: opacity 0.4s;
}

.biz-card:hover {
  background: rgba(255,255,255,0.08);
  transform: translateY(-4px);
}

.biz-card:hover::before {
  opacity: 1;
}

.biz-card-icon {
  width: 60px;
  height: 60px;
  margin-bottom: 1.5rem;
  color: var(--color-gold);
}

.biz-card-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.08em;
  margin-bottom: 0.3rem;
}

.biz-card-sub {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--color-gold);
  letter-spacing: 0.15em;
  margin-bottom: 1.2rem;
}

.biz-card-desc {
  font-size: 0.88rem;
  line-height: 1.9;
  color: rgba(255,255,255,0.7);
}

.biz-card-line {
  width: 40px;
  height: 1px;
  background: var(--color-vermillion);
  margin-top: 1.5rem;
}

/* --- Vision Section --- */
#vision {
  background: var(--color-washi);
}

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

.vision-image {
  overflow: hidden;
  position: relative;
}

.vision-image img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
}

.vision-image::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid rgba(197, 61, 67, 0.2);
  margin: 8px;
  pointer-events: none;
}

.vision-lead {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  line-height: 1.8;
  color: var(--color-indigo);
  letter-spacing: 0.08em;
  margin-bottom: var(--spacing-md);
}

.vision-text {
  font-size: 0.95rem;
  line-height: 2;
  color: var(--color-ink-light);
  margin-bottom: 1.5rem;
}

.vision-pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-washi-dark);
}

.pillar {
  text-align: center;
  padding: 1.2rem 0.5rem;
}

.pillar-icon {
  width: 40px;
  height: 40px;
  margin: 0 auto 1rem;
}

.pillar h4 {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-ink);
  letter-spacing: 0.05em;
  margin-bottom: 0.3rem;
}

.pillar p {
  font-size: 0.8rem;
  color: var(--color-ink-light);
  letter-spacing: 0.05em;
}

/* --- Scenic Band --- */
#scenic {
  overflow: hidden;
}

.scenic-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  height: 280px;
}

.scenic-item {
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.scenic-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s ease;
  filter: saturate(0.85);
}

.scenic-item:hover img {
  transform: scale(1.1);
  filter: saturate(1);
}

.scenic-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2rem 1rem 1rem;
  background: linear-gradient(to top, rgba(26,35,50,0.7), transparent);
  color: #fff;
  font-family: var(--font-serif);
  font-size: 0.9rem;
  letter-spacing: 0.2em;
  text-align: center;
  opacity: 0;
  transform: translateY(10px);
  transition: var(--transition);
}

.scenic-item:hover .scenic-caption {
  opacity: 1;
  transform: translateY(0);
}

/* --- Access Section --- */
#access {
  background: var(--color-snow);
}

.access-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
}

.access-map {
  overflow: hidden;
  position: relative;
}

.access-map img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  filter: saturate(0.7);
}

.access-details {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.detail-block {
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-cloud);
}

.detail-block:last-child {
  border-bottom: none;
}

.detail-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-indigo);
  letter-spacing: 0.08em;
  margin-bottom: 0.8rem;
}

.detail-text {
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--color-ink-light);
}

.detail-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.detail-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.detail-label {
  font-size: 0.8rem;
  color: var(--color-vermillion);
  min-width: 140px;
  letter-spacing: 0.05em;
}

.detail-value {
  font-size: 0.9rem;
  color: var(--color-ink-light);
}

a.detail-value:hover {
  color: var(--color-vermillion);
}

/* --- Contact Section --- */
#contact {
  position: relative;
  overflow: hidden;
}

.contact-bg {
  position: absolute;
  inset: 0;
}

.contact-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.5);
}

.contact-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(26, 35, 50, 0.92),
    rgba(197, 61, 67, 0.85)
  );
}

#contact .section-inner {
  position: relative;
  z-index: 2;
}

.contact-content {
  text-align: center;
  color: #fff;
  max-width: 600px;
  margin: 0 auto;
  padding: var(--spacing-lg) 0;
}

.contact-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 600;
  letter-spacing: 0.12em;
  margin-bottom: var(--spacing-sm);
}

.contact-text {
  font-size: 1rem;
  line-height: 2;
  color: rgba(255,255,255,0.85);
  margin-bottom: var(--spacing-lg);
  letter-spacing: 0.05em;
}

.contact-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1rem 2.5rem;
  border: 1px solid var(--color-gold);
  color: var(--color-gold-light);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  transition: var(--transition);
}

.contact-btn:hover {
  background: var(--color-gold);
  color: var(--color-indigo);
}

/* --- Footer --- */
#footer {
  background: var(--color-indigo);
  color: rgba(255,255,255,0.6);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2.5rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand {
  display: flex;
  flex-direction: column;
}

.footer-logo-kanji {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: #fff;
  letter-spacing: 0.1em;
}

.footer-logo-en {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--color-gold);
  margin-top: 0.3rem;
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  transition: color 0.3s;
}

.footer-links a:hover {
  color: var(--color-gold);
}

.footer-bottom {
  padding: 1.5rem 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

/* --- Animations --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Scroll animations */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .business-cards {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }

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

  .scenic-item {
    height: 200px;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-xxl: 5rem;
    --spacing-xl: 3rem;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(26, 35, 50, 0.98);
    flex-direction: column;
    padding: 5rem 2rem 2rem;
    gap: 1.5rem;
    transition: right 0.4s ease;
  }

  .nav-links.active {
    right: 0;
  }

  .nav-toggle {
    display: flex;
    z-index: 1001;
  }

  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
  }
  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
  }

  .hero-seal {
    display: none;
  }

  .about-grid,
  .vision-grid,
  .access-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .about-image img {
    aspect-ratio: 16/9;
  }

  .vision-image img {
    aspect-ratio: 16/9;
  }

  .vision-pillars {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .pillar {
    display: flex;
    align-items: center;
    gap: 1rem;
    text-align: left;
    padding: 0.5rem 0;
  }

  .pillar-icon {
    margin: 0;
    flex-shrink: 0;
  }

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

  .scenic-item {
    height: 160px;
  }

  .footer-top {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }

  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .section-number {
    font-size: 2.5rem;
  }
}

@media (max-width: 480px) {
  .hero-title {
    letter-spacing: 0.05em;
  }

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

  .scenic-item {
    height: 120px;
  }

  .info-item {
    flex-direction: column;
    gap: 0.3rem;
  }

  .detail-item {
    flex-direction: column;
    gap: 0.2rem;
    align-items: flex-start;
  }
}