/* ==========================================================================
   Groxru Japan - Production CSS
   Palette: Deep Slate (#0F172A), Tech Blue (#0284C7), Teal (#0D9488), Light (#F8FAFC)
   ========================================================================== */

:root {
  --primary: #0284C7;
  --primary-dark: #0369A1;
  --secondary: #0D9488;
  --bg-dark: #0F172A;
  --bg-dark-light: #1E293B;
  --bg-light: #F8FAFC;
  --bg-white: #FFFFFF;
  --text-main: #1E293B;
  --text-muted: #64748B;
  --text-light: #F1F5F9;
  --border-color: #E2E8F0;
  --border-focus: #38BDF8;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 25px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -2px rgba(15, 23, 42, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 10px 10px -5px rgba(15, 23, 42, 0.04);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: all 0.25s ease-in-out;
  --container-max: 1200px;
}

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

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

body {
  font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: var(--text-main);
  background-color: var(--bg-light);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
  color: var(--primary-dark);
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header & Navigation */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-img {
  height: 44px;
  width: auto;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-main);
}

.nav-link:hover {
  color: var(--primary);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.btn-primary {
  background-color: var(--primary);
  color: #FFFFFF !important;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.35);
}

.btn-primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(2, 132, 199, 0.45);
}

.btn-secondary {
  background-color: #FFFFFF;
  color: var(--text-main);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background-color: var(--bg-light);
  border-color: #CBD5E1;
}

.nav-cta {
  padding: 0.6rem 1.25rem;
  font-size: 0.9rem;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-main);
  cursor: pointer;
}

.nav-mobile {
  display: none;
  flex-direction: column;
  padding: 1.5rem;
  background-color: #FFFFFF;
  border-bottom: 1px solid var(--border-color);
  gap: 1rem;
}

.nav-mobile.active {
  display: flex;
}

/* Hero Section */
.hero {
  position: relative;
  padding: 5rem 0 4rem;
  background: linear-gradient(135deg, #F0FDF4 0%, #F0F9FF 50%, #F8FAFC 100%);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background-color: rgba(2, 132, 199, 0.1);
  color: var(--primary-dark);
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: 9999px;
  margin-bottom: 1.25rem;
}

.hero-title {
  font-size: 2.75rem;
  font-weight: 900;
  line-height: 1.3;
  color: var(--bg-dark);
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.trust-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: #334155;
}

.trust-icon {
  width: 18px;
  height: 18px;
  color: var(--secondary);
  flex-shrink: 0;
}

.hero-media {
  position: relative;
}

.hero-img-wrap {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  background-color: var(--bg-dark);
}

.hero-img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.hero-img-wrap:hover .hero-img {
  transform: scale(1.02);
}

.hero-floating-card {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background-color: #FFFFFF;
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  max-width: 260px;
}

.floating-card-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--bg-dark);
  margin-bottom: 0.25rem;
}

.floating-card-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Section Common */
.section {
  padding: 5.5rem 0;
}

.section-alt {
  background-color: #FFFFFF;
}

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

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 4rem;
}

.section-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--bg-dark);
  line-height: 1.35;
  margin-bottom: 1rem;
}

.section-dark .section-title {
  color: #FFFFFF;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.8;
}

.section-dark .section-desc {
  color: #94A3B8;
}

/* Value Proposition / Benefits */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 2rem;
}

.benefit-card {
  background-color: #FFFFFF;
  padding: 2.25rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.benefit-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: #BAE6FD;
}

.benefit-icon-box {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(2, 132, 199, 0.1) 0%, rgba(13, 148, 136, 0.15) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 1.5rem;
}

.benefit-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--bg-dark);
  margin-bottom: 1rem;
}

.benefit-text {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.8;
}

/* How It Works */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  position: relative;
}

.step-card {
  position: relative;
  background-color: var(--bg-light);
  padding: 2.25rem 1.75rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--primary);
  color: #FFFFFF;
  font-weight: 800;
  font-size: 1.1rem;
  margin-bottom: 1.25rem;
}

.step-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--bg-dark);
  margin-bottom: 0.75rem;
}

.step-text {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.75;
}

/* Services / Features */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 2rem;
}

.service-card {
  background-color: #FFFFFF;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.service-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.service-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.service-content {
  padding: 1.75rem;
}

.service-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--bg-dark);
  margin-bottom: 0.75rem;
}

.service-text {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 1.25rem;
}

.service-list {
  list-style: none;
}

.service-list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: #334155;
  margin-bottom: 0.4rem;
}

.service-list svg {
  width: 14px;
  height: 14px;
  color: var(--secondary);
  flex-shrink: 0;
}

/* Social Proof */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.testimonial-card {
  background-color: var(--bg-dark-light);
  padding: 2.25rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.testimonial-quote {
  font-size: 0.95rem;
  color: #E2E8F0;
  line-height: 1.8;
  margin-bottom: 1.75rem;
  position: relative;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.25rem;
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #FFFFFF;
}

.author-info h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #FFFFFF;
}

.author-info p {
  font-size: 0.8rem;
  color: #94A3B8;
}

/* About Section */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-img-wrap {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about-img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

.about-content h3 {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--bg-dark);
  margin-bottom: 1.25rem;
}

.about-content p {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.85;
  margin-bottom: 1.25rem;
}

/* FAQ Accordion */
.faq-wrap {
  max-width: 840px;
  margin: 0 auto;
}

.faq-item {
  background-color: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  overflow: hidden;
  transition: var(--transition);
}

.faq-question {
  width: 100%;
  padding: 1.5rem 1.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: none;
  border: none;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--bg-dark);
  text-align: left;
  cursor: pointer;
}

.faq-icon {
  width: 20px;
  height: 20px;
  transition: transform 0.3s ease;
  color: var(--primary);
  flex-shrink: 0;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 1.75rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.8;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 1.75rem 1.5rem;
}

/* Lead Form Section */
.form-section {
  background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
  color: #FFFFFF;
  padding: 6rem 0;
}

.form-wrapper {
  max-width: 720px;
  margin: 0 auto;
  background-color: #FFFFFF;
  color: var(--text-main);
  padding: 3.5rem;
  border-radius: var(--radius-xl);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.35);
}

.form-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.form-header h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--bg-dark);
  margin-bottom: 0.75rem;
}

.form-header p {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.lead-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: #334155;
}

.form-label span.req {
  color: #EF4444;
  margin-left: 0.2rem;
}

.form-input, .form-textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  font-size: 0.95rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: #F8FAFC;
  color: var(--text-main);
  transition: var(--transition);
  font-family: inherit;
}

.form-input:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--border-focus);
  background-color: #FFFFFF;
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

.form-checkbox-wrap {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  margin: 0.5rem 0;
}

.form-checkbox-wrap input[type="checkbox"] {
  margin-top: 0.25rem;
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.form-checkbox-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.form-submit-btn {
  width: 100%;
  padding: 1.1rem;
  font-size: 1.05rem;
  font-weight: 800;
  margin-top: 0.5rem;
}

.form-notice {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 0.75rem;
  line-height: 1.5;
}

.form-feedback {
  display: none;
  padding: 1.5rem;
  border-radius: var(--radius-md);
  text-align: center;
  margin-top: 1.5rem;
}

.form-feedback.success {
  display: block;
  background-color: #F0FDF4;
  border: 1px solid #BBF7D0;
  color: #166534;
}

.form-feedback.error {
  display: block;
  background-color: #FEF2F2;
  border: 1px solid #FECACA;
  color: #991B1B;
}

/* Footer */
.footer {
  background-color: var(--bg-dark);
  color: #94A3B8;
  padding: 4.5rem 0 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.8;
  margin-top: 1rem;
  color: #94A3B8;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.6rem;
}

.footer-links a {
  color: #94A3B8;
  font-size: 0.85rem;
}

.footer-links a:hover {
  color: #FFFFFF;
}

.footer-transparency {
  font-size: 0.85rem;
  line-height: 1.8;
  color: #94A3B8;
}

.footer-transparency strong {
  color: #F1F5F9;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.8rem;
}

.footer-bottom a {
  color: #94A3B8;
}

.footer-bottom a:hover {
  color: #FFFFFF;
}

/* Cookie Notice Banner */
.cookie-banner {
  position: fixed;
  bottom: 1.5rem;
  left: 1.5rem;
  right: 1.5rem;
  max-width: 560px;
  background-color: #FFFFFF;
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.15);
  z-index: 9999;
  display: none;
}

.cookie-banner.active {
  display: block;
}

.cookie-content h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--bg-dark);
  margin-bottom: 0.5rem;
}

.cookie-content p {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.cookie-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

.btn-cookie {
  padding: 0.5rem 1.25rem;
  font-size: 0.8rem;
}

/* Back to top button */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--primary);
  color: #FFFFFF;
  border: none;
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 900;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background-color: var(--primary-dark);
  transform: translateY(-3px);
}

/* Legal Page Common */
.legal-page-header {
  background-color: var(--bg-dark);
  color: #FFFFFF;
  padding: 4rem 0;
  text-align: center;
}

.legal-page-header h1 {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.legal-page-header p {
  font-size: 0.9rem;
  color: #94A3B8;
}

.legal-content-wrap {
  padding: 4.5rem 0;
  max-width: 860px;
  margin: 0 auto;
}

.legal-content h2 {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--bg-dark);
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid #E2E8F0;
}

.legal-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--bg-dark);
  margin: 1.5rem 0 0.75rem;
}

.legal-content p {
  font-size: 0.95rem;
  color: #334155;
  line-height: 1.85;
  margin-bottom: 1.25rem;
}

.legal-content ul, .legal-content ol {
  margin: 0 0 1.5rem 1.5rem;
  color: #334155;
  font-size: 0.95rem;
  line-height: 1.8;
}

.legal-content li {
  margin-bottom: 0.5rem;
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .hero-grid, .about-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .hero-img-wrap, .about-img-wrap {
    max-width: 600px;
    margin: 0 auto;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-desktop {
    display: none;
  }
  .menu-toggle {
    display: block;
  }
  .hero-title {
    font-size: 2rem;
  }
  .section-title {
    font-size: 1.75rem;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .form-wrapper {
    padding: 2rem 1.5rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}