/* ===================================
   共創堂 - トップページCSS
   =================================== */

/* --- Hero Section --- */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  max-height: 1000px;
  overflow: hidden;
}

.hero-slider {
  position: relative;
  width: 100%;
  height: 100%;
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1.2s ease-in-out;
}

.hero-slide.active {
  opacity: 1;
}

.hero-slide-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  transform: scale(1.05);
  transition: transform 8s ease-out;
}

.hero-slide.active .hero-slide-bg {
  transform: scale(1);
}

.hero-slide-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    rgba(15, 42, 74, 0.82) 0%,
    rgba(15, 42, 74, 0.55) 50%,
    rgba(13, 148, 136, 0.3) 100%
  );
}

.hero-content {
  position: absolute;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  width: 100%;
  padding: 0 var(--space-xl);
  z-index: 2;
}

.hero-content-inner {
  max-width: var(--container-max);
  margin: 0 auto;
}

.hero-label {
  font-family: var(--font-en);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-teal-light);
  margin-bottom: var(--space-lg);
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.8s 0.3s ease-out;
}

.hero-slide.active .hero-label {
  opacity: 1;
  transform: translateY(0);
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.35;
  margin-bottom: var(--space-xl);
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s 0.5s ease-out;
}

.hero-slide.active .hero-title {
  opacity: 1;
  transform: translateY(0);
}

.hero-title span {
  display: block;
}

.hero-title .highlight {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.8);
  max-width: 550px;
  line-height: 2;
  margin-bottom: var(--space-2xl);
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s 0.7s ease-out;
}

.hero-slide.active .hero-desc {
  opacity: 1;
  transform: translateY(0);
}

.hero-buttons {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s 0.9s ease-out;
}

.hero-slide.active .hero-buttons {
  opacity: 1;
  transform: translateY(0);
}

/* Hero Navigation */
.hero-nav {
  position: absolute;
  bottom: var(--space-3xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  z-index: 3;
}

.hero-dot {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.3);
  cursor: pointer;
  transition: all var(--transition-base);
  border: 2px solid transparent;
}

.hero-dot.active {
  background: var(--color-teal-light);
  border-color: var(--color-teal-light);
  transform: scale(1.2);
}

.hero-dot:hover {
  background: rgba(255, 255, 255, 0.6);
}

/* Hero Scroll Indicator */
.hero-scroll {
  position: absolute;
  bottom: var(--space-xl);
  right: var(--space-2xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  z-index: 3;
}

.hero-scroll-text {
  font-family: var(--font-en);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
  writing-mode: vertical-rl;
}

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

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

@keyframes scrollLine {
  0% { top: -100%; }
  100% { top: 100%; }
}

/* --- News Section --- */
.news-section {
  padding: var(--space-4xl) 0;
  background: var(--color-white);
}

.news-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: var(--space-2xl);
}

.news-list {
  border-top: 1px solid var(--color-border);
}

.news-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-xl);
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-fast);
}

.news-item:hover {
  padding-left: var(--space-md);
  background: var(--color-gray-50);
}

.news-date {
  font-family: var(--font-en);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  min-width: 100px;
  padding-top: 2px;
}

.news-category {
  display: inline-block;
  padding: 2px var(--space-md);
  font-size: 0.72rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  white-space: nowrap;
  min-width: 80px;
  text-align: center;
}

.news-category.cat-news {
  background: rgba(37, 99, 235, 0.1);
  color: var(--color-accent);
}

.news-category.cat-ir {
  background: rgba(13, 148, 136, 0.1);
  color: var(--color-teal);
}

.news-category.cat-release {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
}

.news-category.cat-event {
  background: rgba(168, 85, 247, 0.1);
  color: #a855f7;
}

.news-title {
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--color-text);
  flex: 1;
  line-height: 1.6;
}

.news-item:hover .news-title {
  color: var(--color-accent);
}

.news-more {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-accent);
  transition: all var(--transition-fast);
}

.news-more::after {
  content: '→';
  transition: transform var(--transition-fast);
}

.news-more:hover::after {
  transform: translateX(4px);
}

/* --- Business Section --- */
.business-section {
  padding: var(--space-5xl) 0;
  background: var(--color-off-white);
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
}

.business-grid .card:nth-child(4),
.business-grid .card:nth-child(5) {
  /* Make last two cards slightly wider on large screens */
}

.business-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
}

.business-card-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  transition: transform var(--transition-slow);
}

.business-card:hover .business-card-bg {
  transform: scale(1.08);
}

.business-card-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(15, 42, 74, 0.2) 0%, rgba(15, 42, 74, 0.85) 100%);
  transition: background var(--transition-base);
}

.business-card:hover .business-card-overlay {
  background: linear-gradient(180deg, rgba(15, 42, 74, 0.3) 0%, rgba(15, 42, 74, 0.92) 100%);
}

.business-card-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-xl);
  color: var(--color-white);
  z-index: 1;
}

.business-card-num {
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--color-teal-light);
  margin-bottom: var(--space-sm);
}

.business-card-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--space-sm);
  line-height: 1.4;
}

.business-card-desc {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
  margin-bottom: var(--space-md);
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.business-card:hover .business-card-desc {
  max-height: 100px;
}

.business-card-arrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-teal-light);
  transition: all var(--transition-fast);
}

.business-card:hover .business-card-arrow {
  gap: var(--space-sm);
}

/* --- Message Section --- */
.message-section {
  padding: var(--space-5xl) 0;
  background: var(--color-white);
  overflow: hidden;
}

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

.message-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
  position: relative;
}

.message-image::after {
  content: '';
  position: absolute;
  top: -30%;
  right: -30%;
  width: 60%;
  height: 60%;
  background: radial-gradient(circle, rgba(13, 148, 136, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

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

.message-content .section-label {
  margin-bottom: var(--space-md);
}

.message-content h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: var(--space-xl);
  line-height: 1.5;
}

.message-content p {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 2;
}

.message-content .ceo-name {
  margin-top: var(--space-xl);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.message-content .ceo-name strong {
  display: block;
  font-size: 1.1rem;
  color: var(--color-text);
  margin-top: var(--space-xs);
}

/* --- Recruit Banner --- */
.recruit-banner {
  position: relative;
  padding: var(--space-5xl) 0;
  background: var(--gradient-primary);
  overflow: hidden;
}

.recruit-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.recruit-banner-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--color-white);
}

.recruit-banner-content h2 {
  color: var(--color-white);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  margin-bottom: var(--space-md);
}

.recruit-banner-content p {
  color: rgba(255, 255, 255, 0.75);
  font-size: 1.05rem;
  margin-bottom: var(--space-2xl);
}

/* --- Stats Section --- */
.stats-section {
  padding: var(--space-4xl) 0;
  background: var(--color-white);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
}

.stat-item {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
}

.stat-number {
  font-family: var(--font-en);
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 800;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.stat-number span {
  font-size: 1.2rem;
  font-weight: 500;
  -webkit-text-fill-color: var(--color-text-light);
}

.stat-label {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-top: var(--space-sm);
}

/* --- Contact CTA Section --- */
.contact-cta {
  padding: var(--space-4xl) 0;
  background: var(--color-off-white);
}

.contact-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3xl);
  background: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.contact-cta-text h3 {
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
}

.contact-cta-text p {
  color: var(--color-text-light);
  font-size: 0.95rem;
  margin-bottom: 0;
}

.contact-cta-buttons {
  display: flex;
  gap: var(--space-md);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .business-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .message-grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

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

@media (max-width: 768px) {
  .hero {
    min-height: 500px;
    max-height: 700px;
  }

  .hero-title {
    font-size: clamp(1.5rem, 6vw, 2.2rem);
  }

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

  .hero-scroll {
    display: none;
  }

  .news-item {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .news-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
  }

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

  .business-card {
    aspect-ratio: 16/9;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }

  .contact-cta-inner {
    flex-direction: column;
    text-align: center;
    gap: var(--space-xl);
    padding: var(--space-2xl);
  }

  .contact-cta-buttons {
    flex-direction: column;
    width: 100%;
  }

  .contact-cta-buttons .btn {
    width: 100%;
  }
}