/* ==========================================================================
   Lytvem - Modern Enterprise Design System (JP Locale)
   ========================================================================== */

:root {
  --primary: #0F2B48;
  --primary-light: #1A3E63;
  --primary-dark: #091B2F;
  --accent: #00A896;
  --accent-hover: #028090;
  --accent-light: #E6F8F6;
  
  --bg-main: #FFFFFF;
  --bg-alt: #F8FAFC;
  --card-bg: #FFFFFF;
  
  --text-main: #1E293B;
  --text-muted: #64748B;
  --text-light: #94A3B8;
  
  --border: #E2E8F0;
  --border-focus: #00A896;
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(15, 43, 72, 0.08);
  --shadow-lg: 0 12px 32px rgba(15, 43, 72, 0.12);
  
  --font-base: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-display: 'Plus Jakarta Sans', 'Noto Sans JP', sans-serif;
}

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

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

body {
  font-family: var(--font-base);
  color: var(--text-main);
  background-color: var(--bg-main);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* Layout Utilities */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-sm {
  max-width: 800px;
}

.section {
  padding: 80px 0;
}

.bg-alt {
  background-color: var(--bg-alt);
}

.text-center {
  text-align: center;
}

.section-header {
  margin-bottom: 56px;
}

.section-subtitle {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--accent);
  margin-bottom: 8px;
  text-transform: uppercase;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.35;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  text-align: center;
  line-height: 1.2;
}

.btn-primary {
  background-color: var(--accent);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(0, 168, 150, 0.3);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 168, 150, 0.4);
}

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

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

.btn-lg {
  padding: 16px 32px;
  font-size: 1.05rem;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}

.btn-block {
  width: 100%;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: all 0.3s ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.site-logo {
  height: 38px;
  width: auto;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 28px;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-main);
  padding: 8px 0;
  position: relative;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent);
  transition: width 0.25s ease;
}

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

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-toggle .bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--primary);
  margin: 5px 0;
  transition: 0.3s;
}

/* Hero Section */
.hero-section {
  padding: 80px 0 100px;
  background: linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 100%);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background-color: var(--accent-light);
  border: 1px solid rgba(0, 168, 150, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-hover);
  margin-bottom: 24px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(0, 168, 150, 0.7);
  animation: pulse 1.8s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 168, 150, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(0, 168, 150, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 168, 150, 0); }
}

.hero-title {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.3;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.text-highlight {
  color: var(--accent);
  background: linear-gradient(120deg, rgba(0,168,150,0.15) 0%, rgba(0,168,150,0) 100%);
  padding: 0 4px;
}

.hero-lead {
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 36px;
}

.hero-cta-group {
  display: flex;
  gap: 16px;
  margin-bottom: 40px;
}

.hero-trust-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  border-top: 1px solid var(--border);
  padding-top: 24px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.trust-icon {
  color: var(--accent);
  font-weight: 900;
}

.visual-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background-color: var(--primary);
}

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

.floating-badge {
  position: absolute;
  bottom: 20px;
  left: 20px;
  right: 20px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  padding: 16px 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 16px;
}

.badge-icon {
  width: 44px;
  height: 44px;
  background-color: var(--accent-light);
  color: var(--accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.badge-text strong {
  display: block;
  font-size: 0.95rem;
  color: var(--primary);
}

.badge-text span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Grids */
.grid {
  display: grid;
  gap: 28px;
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

/* Value Cards */
.value-card {
  background-color: var(--card-bg);
  padding: 36px 28px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.value-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}

.value-icon {
  width: 60px;
  height: 60px;
  background-color: var(--accent-light);
  color: var(--accent);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.value-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
}

.value-text {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* Services */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.service-item {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.service-image-box img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.service-content {
  padding: 28px;
}

.service-tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.service-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}

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

/* Process */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.process-step {
  background: var(--card-bg);
  padding: 32px 24px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  position: relative;
}

.step-badge {
  width: 48px;
  height: 48px;
  background-color: var(--primary);
  color: #FFFFFF;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 800;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.step-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}

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

/* Cases */
.case-card {
  background: var(--card-bg);
  padding: 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.client-meta {
  margin-bottom: 16px;
}

.client-role {
  display: block;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary);
}

.client-type {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.case-quote {
  font-size: 0.95rem;
  color: var(--text-main);
  line-height: 1.75;
  margin-bottom: 20px;
  font-style: normal;
}

.case-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tag {
  font-size: 0.8rem;
  color: var(--accent-hover);
  background-color: var(--accent-light);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

/* FAQ */
.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s;
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  background: none;
  border: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary);
  text-align: left;
  cursor: pointer;
}

.faq-icon {
  font-size: 1.4rem;
  color: var(--accent);
  transition: transform 0.25s ease;
}

.faq-question[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer p {
  padding: 0 24px 20px;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: center;
}

.about-img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  width: 100%;
  height: 380px;
  object-fit: cover;
}

.about-text {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.8;
}

.about-highlights {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.highlight-item strong {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.highlight-item span {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--primary);
}

/* Form Section */
.form-wrapper {
  background: var(--card-bg);
  padding: 48px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.required {
  color: #DC2626;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.95rem;
  font-family: inherit;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background-color: #FAFAFA;
  transition: all 0.2s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--accent);
  background-color: #FFFFFF;
  box-shadow: 0 0 0 3px rgba(0, 168, 150, 0.15);
}

.phone-input-group {
  display: flex;
  align-items: center;
}

.phone-prefix {
  padding: 12px 14px;
  background-color: var(--bg-alt);
  border: 1px solid var(--border);
  border-right: none;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  font-weight: 700;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.phone-input-group .form-control {
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

textarea.form-control {
  resize: vertical;
}

.checkbox-container {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  position: relative;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.checkbox-container input {
  margin-top: 4px;
  cursor: pointer;
}

.error-feedback {
  font-size: 0.8rem;
  color: #DC2626;
  margin-top: 4px;
  min-height: 18px;
}

.form-reassurance {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.form-response {
  margin-top: 24px;
  padding: 24px;
  border-radius: var(--radius-md);
  text-align: center;
}

.success-card {
  background-color: var(--accent-light);
  border: 1px solid var(--accent);
}

.error-card {
  background-color: #FEF2F2;
  border: 1px solid #DC2626;
}

.response-icon {
  width: 44px;
  height: 44px;
  margin: 0 auto 12px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.2rem;
}

.success-card .response-icon {
  background-color: var(--accent);
  color: #FFFFFF;
}

.error-card .response-icon {
  background-color: #DC2626;
  color: #FFFFFF;
}

.response-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.response-text {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Footer */
.site-footer {
  background-color: var(--primary);
  color: #F8FAFC;
  padding-top: 64px;
}

.footer-top {
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
}

.footer-logo {
  height: 38px;
  width: auto;
  filter: brightness(0) invert(1);
  margin-bottom: 16px;
}

.footer-tagline {
  font-size: 0.95rem;
  color: #94A3B8;
  margin-bottom: 20px;
  max-width: 380px;
}

.footer-contact-info p {
  font-size: 0.85rem;
  color: #CBD5E1;
  margin-bottom: 4px;
}

.footer-contact-info a {
  color: #00E5BC;
}

.footer-heading {
  font-size: 1rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 16px;
}

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

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  font-size: 0.9rem;
  color: #94A3B8;
  transition: color 0.2s;
}

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

.footer-bottom {
  padding: 24px 0;
}

.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: #94A3B8;
}

.back-to-top {
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: #FFFFFF;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s;
}

.back-to-top:hover {
  background: var(--accent);
}

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(15, 43, 72, 0.96);
  color: #FFFFFF;
  padding: 16px 0;
  z-index: 9999;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.cookie-banner-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.cookie-text {
  font-size: 0.88rem;
  color: #E2E8F0;
  line-height: 1.5;
}

.cookie-text a {
  color: #00E5BC;
  text-decoration: underline;
}

/* Responsive */
@media (max-width: 992px) {
  .hero-grid, .about-grid {
    grid-template-columns: 1fr;
  }
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.1rem;
  }
  .section {
    padding: 56px 0;
  }
  .services-grid, .grid-3, .process-steps {
    grid-template-columns: 1fr;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .form-wrapper {
    padding: 28px 20px;
  }
  .main-nav {
    display: none;
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: #FFFFFF;
    border-bottom: 1px solid var(--border);
    padding: 20px;
  }
  .main-nav.active {
    display: block;
  }
  .nav-list {
    flex-direction: column;
    gap: 16px;
  }
  .mobile-toggle {
    display: block;
  }
  .header-cta {
    display: none;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .cookie-banner-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}