/* ============================================
   株式会社ミライノサチ コーポレートサイト
   メインスタイルシート
   ============================================ */

:root {
  --color-primary: #006B4E;
  --color-accent: #C9A24A;
  --color-white: #FFFFFF;
  --color-bg-light: #F8F9FA;
  --color-text-dark: #1A1A1A;
  --color-text-gray: #666666;
  --color-border: #E0E0E0;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 3rem;
  --space-xl: 4rem;
  --space-xxl: 6rem;
  --container-width: 1200px;
  --container-narrow: 800px;
  --transition: all 0.3s ease;
}

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

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

body {
  font-family: var(--font-family);
  color: var(--color-text-dark);
  background-color: var(--color-white);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.05em;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
}

h2 {
  font-size: 2rem;
  margin-bottom: var(--space-md);
}

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

p {
  margin-bottom: var(--space-sm);
  line-height: 1.8;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container-narrow {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: var(--space-xxl) 0;
}

.section-gray {
  background-color: var(--color-bg-light);
}

.header {
  background-color: var(--color-white);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) 0;
  max-width: var(--container-width);
  margin: 0 auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.1em;
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav-links {
  display: flex;
  gap: var(--space-md);
  align-items: center;
}

.nav-link {
  color: var(--color-text-dark);
  font-weight: 500;
  padding: var(--space-xs) 0;
  position: relative;
  white-space: nowrap;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.header-cta {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--space-xs);
  background: none;
  border: none;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background-color: var(--color-primary);
  border-radius: 2px;
  transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(7px, 7px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 0.875rem 1.75rem;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-align: center;
  white-space: nowrap;
  line-height: 1.5;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 4px 12px rgba(0, 107, 78, 0.2);
}

.btn-primary:hover {
  background-color: #005540;
  box-shadow: 0 6px 16px rgba(0, 107, 78, 0.3);
  transform: translateY(-2px);
}

.btn-accent {
  background-color: var(--color-accent);
  color: var(--color-white);
  box-shadow: 0 4px 12px rgba(201, 162, 74, 0.2);
}

.btn-accent:hover {
  background-color: #B89240;
  box-shadow: 0 6px 16px rgba(201, 162, 74, 0.3);
  transform: translateY(-2px);
}

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

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

.btn-white {
  background-color: var(--color-white);
  color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.btn-white:hover {
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 1.125rem 2.5rem;
  font-size: 1.125rem;
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

.btn-icon svg,
.btn-icon img {
  width: 20px;
  height: 20px;
}

.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, #004d38 100%);
  color: var(--color-white);
  padding: var(--space-xxl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.05" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,138.7C960,139,1056,117,1152,106.7C1248,96,1344,96,1392,96L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
  background-size: cover;
  opacity: 0.3;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: var(--space-md);
  line-height: 1.3;
  letter-spacing: 0.08em;
}

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: var(--space-lg);
  opacity: 0.95;
  line-height: 1.8;
}

.hero-cta {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.section-title h2 {
  font-size: 2.25rem;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
  position: relative;
  display: inline-block;
}

.section-title h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background-color: var(--color-accent);
  margin: var(--space-sm) auto 0;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--color-text-gray);
  margin-top: var(--space-sm);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.card {
  background-color: var(--color-white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  transition: var(--transition);
}

.card:hover {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  transform: translateY(-4px);
}

.card-image {
  width: 100%;
  height: 240px;
  object-fit: cover;
  background-color: var(--color-bg-light);
}

.card-content {
  padding: var(--space-md);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--color-primary);
}

.card-text {
  color: var(--color-text-gray);
  margin-bottom: var(--space-md);
}

.card-footer {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.feature-item {
  text-align: center;
  padding: var(--space-md);
}

.feature-icon {
  width: 80px;
  height: 80px;
  background-color: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
  color: var(--color-white);
  font-size: 2rem;
  font-weight: 700;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--color-primary);
}

.feature-text {
  color: var(--color-text-gray);
  line-height: 1.8;
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-lg);
  position: relative;
}

.step-item {
  text-align: center;
  padding: var(--space-md);
  position: relative;
}

.step-number {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--color-primary) 0%, #004d38 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
  color: var(--color-white);
  font-size: 1.5rem;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(0, 107, 78, 0.3);
}

.step-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--color-primary);
}

.step-text {
  color: var(--color-text-gray);
  line-height: 1.8;
}

.faq-list {
  max-width: 800px;
  margin: var(--space-lg) auto 0;
}

.faq-item {
  background-color: var(--color-white);
  border-radius: 8px;
  margin-bottom: var(--space-sm);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.faq-question {
  padding: var(--space-md);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  color: var(--color-primary);
  transition: var(--transition);
}

.faq-question:hover {
  background-color: var(--color-bg-light);
}

.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  transition: transform 0.3s ease;
}

.faq-question.active::after {
  content: '−';
}

.faq-answer {
  padding: 0 var(--space-md) var(--space-md);
  color: var(--color-text-gray);
  line-height: 1.8;
  display: none;
}

.faq-answer.active {
  display: block;
}

.cta-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, #004d38 100%);
  color: var(--color-white);
  padding: var(--space-xxl) 0;
  text-align: center;
}

.cta-section h2 {
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.cta-section p {
  font-size: 1.125rem;
  margin-bottom: var(--space-lg);
  opacity: 0.95;
}

.cta-buttons {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
}

.floating-cta {
  position: fixed;
  bottom: var(--space-md);
  right: var(--space-md);
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.floating-btn {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.875rem 1.5rem;
  background-color: var(--color-primary);
  color: var(--color-white);
  border-radius: 50px;
  box-shadow: 0 4px 16px rgba(0, 107, 78, 0.3);
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
  font-size: 0.875rem;
}

.floating-btn:hover {
  background-color: #005540;
  box-shadow: 0 6px 20px rgba(0, 107, 78, 0.4);
  transform: translateY(-2px);
}

.floating-btn.accent {
  background-color: var(--color-accent);
}

.floating-btn.accent:hover {
  background-color: #B89240;
}

.floating-btn svg,
.floating-btn img {
  width: 24px;
  height: 24px;
}

.footer {
  background-color: var(--color-text-dark);
  color: var(--color-white);
  padding: var(--space-lg) 0 var(--space-md);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.footer-section h3 {
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
  font-size: 1.125rem;
}

.footer-section p,
.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.8;
}

.footer-section a:hover {
  color: var(--color-accent);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.875rem;
}

.badge {
  display: inline-block;
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 4px;
  background-color: var(--color-accent);
  color: var(--color-white);
}

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

.table-wrapper {
  overflow-x: auto;
  margin: var(--space-md) 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--color-white);
}

th, td {
  padding: var(--space-sm) var(--space-md);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

th {
  background-color: var(--color-bg-light);
  font-weight: 600;
  color: var(--color-primary);
}

.info-box {
  background-color: var(--color-bg-light);
  border-left: 4px solid var(--color-primary);
  padding: var(--space-md);
  margin: var(--space-md) 0;
  border-radius: 4px;
}

.info-box-accent {
  border-left-color: var(--color-accent);
}

.info-box-title {
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.copy-button {
  position: absolute;
  top: var(--space-xs);
  right: var(--space-xs);
  background-color: var(--color-accent);
  color: var(--color-white);
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.875rem;
  transition: var(--transition);
}

.copy-button:hover {
  background-color: #B89240;
}

.copy-button.copied {
  background-color: var(--color-primary);
}

.template-box {
  position: relative;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  padding: var(--space-md);
  border-radius: 8px;
  margin: var(--space-md) 0;
  font-family: monospace;
  white-space: pre-wrap;
  line-height: 1.6;
}

@media (max-width: 1024px) {
  :root {
    --space-xxl: 4rem;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  .hero h1 {
    font-size: 2.5rem;
  }
}

@media (max-width: 768px) {
  :root {
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-xxl: 3rem;
  }

  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hamburger {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    flex-direction: column;
    padding: var(--space-md);
    gap: var(--space-sm);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }

  .nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-links {
    flex-direction: column;
    gap: var(--space-sm);
    width: 100%;
  }

  .nav-link {
    padding: var(--space-xs);
  }

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

  .header-cta .btn {
    width: 100%;
  }

  .floating-cta {
    bottom: var(--space-sm);
    right: var(--space-sm);
    left: var(--space-sm);
  }

  .floating-btn {
    width: 100%;
    justify-content: center;
    font-size: 0.8125rem;
    padding: 0.75rem 1rem;
  }

  .card-grid,
  .feature-list,
  .steps {
    grid-template-columns: 1fr;
  }

  .feature-list,
  .steps {
    gap: var(--space-md);
  }

  .hero-cta,
  .cta-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  :root {
    --space-md: 1.5rem;
  }

  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.375rem;
  }

  .hero h1 {
    font-size: 1.75rem;
  }

  .section-title h2 {
    font-size: 1.5rem;
  }

  .btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.9375rem;
  }
}