/* Base Styles */
:root {
  --primary-color: #005baa;
  --secondary-color: #f08300;
  --dark-color: #333333;
  --light-color: #f5f5f5;
  --border-color: #dddddd;
  --success-color: #28a745;
  --warning-color: #ffc107;
  --danger-color: #dc3545;
  --gray-color: #6c757d;
  --white-color: #ffffff;
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Noto Sans JP', 'Noto Sans', sans-serif;
  line-height: 1.6;
  color: var(--dark-color);
  background-color: var(--white-color);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

a {
  text-decoration: none;
  color: var(--primary-color);
  transition: var(--transition);
}

a:hover {
  color: #003d71;
}

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

ul {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 1rem;
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

h3 {
  font-size: 1.5rem;
}

p {
  margin-bottom: 1rem;
}

.btn {
  display: inline-block;
  background-color: var(--primary-color);
  color: var(--white-color);
  padding: 0.75rem 1.5rem;
  border-radius: 4px;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.btn:hover {
  background-color: #003d71;
  color: var(--white-color);
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.1rem;
}

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

.btn-secondary:hover {
  background-color: #5a6268;
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
}

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

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

.btn-primary:hover {
  background-color: #c56d00;
}

header {
  background-color: var(--light-color);
  padding: 0.5rem 0;
  box-shadow: var(--shadow);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo img {
  display: block;
}

nav ul {
  display: flex;
  gap: 1rem;
}

nav ul li a {
  color: var(--dark-color);
  padding: 0.5rem;
  font-weight: 500;
}

nav ul li a.active {
  color: var(--primary-color);
  font-weight: 700;
  border-bottom: 2px solid var(--primary-color);
}

.hero {
  position: relative;
  height: 300px;
  overflow: hidden;
}

.hero-content {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--white-color);
  z-index: 1;
}

.solution-nav {
  background-color: var(--light-color);
  padding: 2rem 0;
  text-align: center;
}

.solution-nav .container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.solution-nav h2 {
  margin-bottom: 1rem;
}

.nav-options {
  display: flex;
  gap: 1rem;
}

.nav-tab {
  padding: 0.5rem 1rem;
  cursor: pointer;
  background-color: var(--white-color);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-weight: 500;
}

.nav-tab.active {
  background-color: var(--primary-color);
  color: var(--white-color);
}

.nav-tab:hover {
  background-color: var(--primary-color);
  color: var(--white-color);
}

/* Solution Sections */
.solution-section {
  display: none;
}

.solution-section.active {
  display: block;
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.solution-card {
  background-color: var(--white-color);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.solution-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.card-image {
  height: 200px;
  overflow: hidden;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.solution-card:hover .card-image img {
  transform: scale(1.05);
}

.card-content {
  padding: 1.5rem;
}

.card-content h3 {
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.card-content ul {
  margin: 1rem 0;
  padding-left: 1.2rem;
}

.card-content ul li {
  list-style: disc;
  margin-bottom: 0.5rem;
  color: var(--gray-color);
}

.card-content .btn {
  margin-top: 1rem;
}

/* Before/After labels styling */
.before-label {
  color: var(--danger-color);
}

.after-label {
  color: var(--success-color);
}

/* Product Finder */
.product-finder {
  background-color: var(--light-color);
  text-align: center;
}

.finder-form {
  background-color: var(--white-color);
  padding: 2rem;
  border-radius: 8px;
  box-shadow: var(--shadow);
  max-width: 800px;
  margin: 2rem auto 0;
}

.form-group {
  margin-bottom: 1.5rem;
  text-align: left;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.form-group select {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--white-color);
  font-size: 1rem;
}

.form-action {
  margin-top: 2rem;
  display: flex;
  justify-content: center;
  gap: 1rem;
}

/* Contact Section */
.contact-section {
  background-color: var(--light-color);
}

.contact-grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
}

.contact-info {
  flex: 2;
}

.contact-info h2 {
  color: var(--primary-color);
}

.contact-info p {
  margin: 1rem 0;
  line-height: 1.8;
}

.contact-list {
  margin-top: 1rem;
}

.contact-list li {
  margin-bottom: 0.5rem;
  color: var(--dark-color);
}

.contact-list li i {
  margin-right: 0.5rem;
  color: var(--primary-color);
}

.contact-cta {
  flex: 1;
  text-align: center;
}

.contact-cta .btn {
  margin-bottom: 0.5rem;
  width: 100%;
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  padding: 2rem 0;
}

.footer-logo {
  flex: 1;
}

.footer-logo p {
  margin-top: 0.5rem;
  color: var(--gray-color);
}

.footer-links, .footer-products, .footer-contact {
  flex: 1;
}

.footer-links ul, .footer-products ul {
  margin-top: 0.5rem;
}

.footer-links ul li, .footer-products ul li {
  margin-bottom: 0.5rem;
}

.footer-links ul li a, .footer-products ul li a {
  color: var(--dark-color);
}

.footer-links ul li a:hover, .footer-products ul li a:hover {
  text-decoration: underline;
}

.footer-contact address {
  font-style: normal;
  line-height: 1.8;
  color: var(--dark-color);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding: 1rem 0;
  text-align: center;
  color: var(--gray-color);
  font-size: 0.9rem;
}

/* モーダルウィンドウのスタイル */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-container {
    background-color: var(--white-color);
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    max-width: 90%;
    max-height: 90%;
    width: 800px;
    overflow: hidden;
    transform: translateY(-20px);
    transition: transform 0.3s ease;
}

.modal-overlay.active .modal-container {
    transform: translateY(0);
}

.modal-header {
    background-color: var(--primary-color);
    color: var(--white-color);
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
    font-size: 1.5rem;
}

.modal-close {
    background: none;
    border: none;
    color: var(--white-color);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color 0.3s ease;
}

.modal-close:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.modal-content {
    padding: 2rem;
    max-height: 70vh;
    overflow-y: auto;
}

.modal-category-info {
    margin-bottom: 2rem;
    text-align: center;
}

.modal-category-info h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.modal-category-info p {
    color: var(--gray-color);
    font-size: 1.1rem;
    line-height: 1.6;
}

.modal-product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.modal-product-item {
    background-color: var(--light-color);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.modal-product-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.modal-product-item h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.modal-product-item p {
    color: var(--dark-color);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.modal-product-item .btn {
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
}

.btn-sm {
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .modal-container {
        width: 95%;
        margin: 1rem;
    }
    
    .modal-header {
        padding: 1rem;
    }
    
    .modal-content {
        padding: 1rem;
    }
    
    .modal-product-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .modal-product-item {
        padding: 1rem;
    }
}

/* Responsive Design */
@media (max-width: 992px) {
  .nav-options {
      flex-direction: column;
  }
  
  .nav-tab {
      margin: 0.5rem 0;
  }
  
  .contact-grid {
      flex-direction: column;
      text-align: center;
  }
  
  .contact-list li {
      display: inline-block;
      margin: 0 1rem 1rem;
  }
  
  .modal-product-grid {
      grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  }
}

@media (max-width: 768px) {
  .header-container {
      flex-direction: column;
  }
  
  nav ul {
      margin-top: 1rem;
      justify-content: center;
  }
  
  nav ul li {
      margin: 0 0.75rem;
  }
  
  .hero h1 {
      font-size: 2.2rem;
  }
  
  .hero p {
      font-size: 1.2rem;
  }
  
  .modal-container {
      width: 95%;
  }
  
  .modal-product-grid {
      grid-template-columns: 1fr;
  }
  
  .modal-header {
      padding: 1rem;
  }
  
  .modal-content {
      padding: 1rem;
  }
  
  .product-details {
      padding: 1rem;
  }
  
  .product-item {
      padding: 0.75rem 0;
  }
  
  .product-item h4 {
      font-size: 1rem;
  }
}

@media (max-width: 576px) {
  section {
      padding: 2rem 0;
  }
  
  h1 {
      font-size: 2rem;
  }
  
  h2 {
      font-size: 1.7rem;
  }
  
  nav ul {
      flex-wrap: wrap;
  }
  
  nav ul li {
      margin: 0.5rem;
  }
  
  .footer-grid {
      grid-template-columns: 1fr;
  }
}