/* ===================================================
   index.html 専用スタイル
=================================================== */

/* --- スクロールアニメーション --- */
[data-anim] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
[data-anim].anim-in {
  opacity: 1;
  transform: translateY(0);
}

/* --- HERO --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #0d2238 0%, #1a3a5c 55%, #1e4e7a 100%);
  overflow: hidden;
  padding-top: var(--header-h);
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero-diagonal {
  position: absolute;
  bottom: -80px;
  right: -80px;
  width: 600px;
  height: 600px;
  background: linear-gradient(135deg, rgba(200,134,30,0.12) 0%, transparent 60%);
  border-radius: 50%;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 60px;
  align-items: center;
  padding: 80px 0;
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
}

.hero-content {
  opacity: 1 !important;
  transform: none !important;
}

.hero-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 20px;
  padding: 6px 14px;
  border: 1px solid rgba(200,134,30,0.4);
  border-radius: 20px;
}

.hero-title {
  font-family: 'Noto Serif JP', serif;
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.35;
  margin-bottom: 24px;
  letter-spacing: 0.02em;
}

.hero-desc {
  color: rgba(255,255,255,0.72);
  font-size: clamp(0.9rem, 1.5vw, 1rem);
  line-height: 2;
  margin-bottom: 36px;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  flex-direction: column;
  gap: 24px;
  opacity: 1 !important;
  transform: none !important;
}

.hero-stat {
  text-align: center;
  padding: 24px 32px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(4px);
}

.stat-num {
  display: block;
  font-family: 'Noto Serif JP', serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.05em;
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.4);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
}

.hero-scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.4), transparent);
  animation: scrollLine 1.6s ease-in-out infinite;
}

@keyframes scrollLine {
  0%, 100% { transform: scaleY(1); opacity: 0.5; }
  50% { transform: scaleY(0.5); opacity: 0.2; }
}

/* --- FEATURES --- */
.section-features {
  padding: 60px 0;
  background: var(--primary-dark);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}

.feature-item {
  padding: 40px 36px;
  text-align: center;
  border-right: 1px solid rgba(255,255,255,0.06);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.feature-item:last-child { border-right: none; }

.feature-item.anim-in {
  opacity: 1;
  transform: translateY(0);
}

.feature-item:nth-child(2).anim-in { transition-delay: 0.1s; }
.feature-item:nth-child(3).anim-in { transition-delay: 0.2s; }

.feature-icon {
  width: 72px;
  height: 72px;
  background: rgba(255,255,255,0.06);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.feature-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}

.feature-desc {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.8;
}

/* --- SERVICE GRID --- */
.service-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.service-card {
  display: block;
  cursor: pointer;
}

.service-card-visual {
  height: 180px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  position: relative;
  overflow: hidden;
}

.service-card-visual.civil {
  background: linear-gradient(135deg, #1a3a5c 0%, #2a5a8c 100%);
}
.service-card-visual.shirasu {
  background: linear-gradient(135deg, #7a5c30 0%, #c8861e 100%);
}
.service-card-visual.exterior {
  background: linear-gradient(135deg, #2d5a3d 0%, #4a8a5c 100%);
}
.service-card-visual.design {
  background: linear-gradient(135deg, #4a2d6a 0%, #7a4a9a 100%);
}
.service-card-visual.pavement {
  background: linear-gradient(135deg, #3a3a3a 0%, #6a6a72 100%);
}

.service-card-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    -45deg,
    transparent 0, transparent 20px,
    rgba(255,255,255,0.04) 20px, rgba(255,255,255,0.04) 40px
  );
}

.service-card-visual::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 40px;
  background: linear-gradient(to top, var(--white), transparent);
}

.service-card-body {
  padding: 24px 28px 28px;
}

.service-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 10px;
}

.service-card-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 16px;
}

.service-card-link {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.05em;
}

/* --- ABOUT LAYOUT --- */
.about-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 72px;
  align-items: center;
}

.about-img-wrap {
  position: relative;
  padding-bottom: 40px;
  padding-right: 40px;
}

.about-img-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--section-alt) 0%, #dde4ef 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px dashed var(--border);
}

.about-img-inner {
  text-align: center;
  color: var(--text-muted);
}

.about-img-inner svg {
  margin: 0 auto 12px;
}

.about-img-inner p {
  font-size: 0.82rem;
  font-weight: 700;
}

.about-badge {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 96px;
  height: 96px;
  background: var(--accent);
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(200,134,30,0.35);
}

.about-badge-num {
  font-size: 2rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1;
}

.about-badge-text {
  font-size: 0.7rem;
  color: rgba(255,255,255,0.8);
  letter-spacing: 0.1em;
}

.about-text {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 16px;
  line-height: 1.9;
}

.about-highlights {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.about-highlight {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
  font-weight: 500;
}

.ah-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  background: var(--accent);
  color: var(--white);
  border-radius: 50%;
  font-size: 0.72rem;
  font-weight: 700;
  flex-shrink: 0;
}

/* --- WORKS GRID --- */
.works-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.work-item {
  display: block;
  overflow: hidden;
}

.work-thumb {
  height: 160px;
  position: relative;
  display: flex;
  align-items: flex-end;
  padding: 12px;
}

.work-thumb.type-a { background: linear-gradient(160deg, #1a3a5c 0%, #2a6a9c 100%); }
.work-thumb.type-b { background: linear-gradient(160deg, #3a2800 0%, #8a6020 100%); }
.work-thumb.type-c { background: linear-gradient(160deg, #1a3a2c 0%, #2a6a4c 100%); }
.work-thumb.type-d { background: linear-gradient(160deg, #2c1a3a 0%, #5c3a7a 100%); }

.work-thumb::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    -45deg,
    transparent 0, transparent 18px,
    rgba(255,255,255,0.03) 18px, rgba(255,255,255,0.03) 36px
  );
}

.work-tag {
  position: relative;
  z-index: 1;
  font-size: 0.72rem;
  font-weight: 700;
  background: rgba(255,255,255,0.15);
  color: var(--white);
  padding: 4px 10px;
  border-radius: 20px;
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,0.2);
}

.work-info {
  padding: 16px 20px 20px;
}

.work-location {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.work-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text);
}

/* --- RECRUIT BANNER --- */
.section-recruit-banner {
  background: var(--primary);
  padding: 72px 0;
}

.recruit-banner-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.recruit-banner-text {
  flex: 1;
  min-width: 260px;
}

.recruit-banner-title {
  font-family: 'Noto Serif JP', serif;
  font-size: clamp(1.3rem, 2.5vw, 1.7rem);
  color: var(--white);
  font-weight: 700;
  margin: 8px 0 12px;
  line-height: 1.4;
}

.recruit-banner-text p {
  color: rgba(255,255,255,0.65);
  font-size: 0.9rem;
}

/* --- CONTACT CTA --- */
.section-contact-cta {
  background: var(--light-bg);
}

.contact-cta-box {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
  padding: 48px;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.cta-tel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.cta-tel-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.cta-tel-num {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-dark);
  letter-spacing: 0.05em;
  line-height: 1.2;
  font-family: 'Noto Serif JP', serif;
}

.cta-tel-hours {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.cta-divider {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.1em;
}

/* ===================================================
   RESPONSIVE
=================================================== */
@media (max-width: 1024px) {
  .works-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-inner {
    grid-template-columns: 1fr;
  }
  .hero-stats {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
  }
  .hero-stat {
    flex: 1 1 140px;
  }
}

@media (max-width: 768px) {
  .features-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .feature-item {
    border-right: none;
    border-bottom: 1px solid rgba(255,255,255,0.06);
  }
  .feature-item:last-child { border-bottom: none; }

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

  .about-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-img-wrap {
    padding-bottom: 24px;
    padding-right: 24px;
  }

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

  .contact-cta-box {
    padding: 32px 24px;
    gap: 32px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }
  .works-grid {
    grid-template-columns: 1fr;
  }
  .hero-actions {
    flex-direction: column;
  }
}