@charset "UTF-8";

/* ==========================================================================
   Variables & Design Tokens
   ========================================================================== */
:root {
  --font-sans: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Primary & Accent Colors */
  --color-primary: #0F172A;
  --color-primary-light: #1E293B;
  --color-accent: #0066FF;
  --color-accent-hover: #0052CC;
  --color-accent-cyan: #00B4D8;
  --color-accent-gradient: linear-gradient(135deg, #0066FF 0%, #00B4D8 100%);
  --color-hero-bg: linear-gradient(180deg, #F8FAFC 0%, #EDF2F7 100%);

  /* Neutrals */
  --color-bg: #FFFFFF;
  --color-bg-alt: #F8FAFC;
  --color-card-bg: #FFFFFF;
  --color-text-main: #1E293B;
  --color-text-muted: #64748B;
  --color-text-light: #94A3B8;
  --color-border: #E2E8F0;
  --color-border-subtle: #F1F5F9;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.07), 0 4px 10px -2px rgba(0, 0, 0, 0.03);
  --shadow-accent: 0 4px 14px 0 rgba(0, 102, 255, 0.25);

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Layout */
  --header-height: 110px;
  --max-width: 1100px;
  --section-spacing: 20px;
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text-main);
  background-color: var(--color-bg);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.2s ease;
}

ul, ol {
  list-style: none;
}

button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* ==========================================================================
   Layout Containers
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--section-spacing) 0;
  position: relative;
}

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

/* Section Header */
.section-header {
  text-align: center;
  margin-bottom: 24px;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: rgba(0, 102, 255, 0.08);
  padding: 4px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
  scroll-margin-top: calc(var(--header-height) + 16px);
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.3;
  margin-bottom: 12px;
  color: var(--color-primary);
}

.section-subtitle {
  font-size: 1rem;
  color: var(--color-text-muted);
  max-width: 800px;
  margin: 0 auto;
}

.gradient-text {
  background: var(--color-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow 0.25s ease;
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header-container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
}

.brand-logo img {
  height: 96px;
  width: auto;
  object-fit: contain;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-main);
  padding: 6px 0;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--color-accent);
  transition: width 0.2s ease;
}

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

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.92rem;
  padding: 10px 22px;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-primary {
  background: var(--color-accent-gradient);
  color: #ffffff;
  box-shadow: var(--shadow-accent);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0, 102, 255, 0.35);
}

.btn-secondary {
  background: #ffffff;
  color: var(--color-text-main);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-bg-alt);
  border-color: #CBD5E1;
  transform: translateY(-2px);
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
  z-index: 1001;
}

.mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text-main);
  transition: all 0.25s ease;
  border-radius: 2px;
}

.mobile-toggle.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-toggle.is-active span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  padding-top: calc(var(--header-height) + 30px);
  padding-bottom: 30px;
  background: var(--color-hero-bg);
  border-bottom: 1px solid var(--color-border);
}

.hero-content {
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
}

.hero-text {
  width: 100%;
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.4;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  color: var(--color-primary);
}

.hero-description {
  font-size: 1.08rem;
  line-height: 1.8;
  color: var(--color-text-muted);
  margin: 0 auto 32px;
  max-width: 810px;
}

.hero-description span {
  font-weight: 700;
  color: var(--color-primary);
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about-simple-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.about-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.about-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: rgba(0, 102, 255, 0.08);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--color-primary);
}

.about-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ==========================================================================
   Services Section
   ========================================================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.service-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: #CBD5E1;
}

.service-header {
  margin-bottom: 12px;
}

.service-badge {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  display: inline-block;
  margin-bottom: 6px;
}

.service-card-title {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--color-primary);
}

.service-card-desc {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 22px;
}

.service-details-list {
  border-top: 1px solid var(--color-border-subtle);
  padding-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.service-detail-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--color-text-main);
}

.service-detail-item svg {
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 3px;
}

/* ==========================================================================
   Company Profile
   ========================================================================== */
.company-container {
  max-width: 820px;
  margin: 0 auto;
}

.company-table-wrapper {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.company-table {
  width: 100%;
  border-collapse: collapse;
}

.company-table tr {
  border-bottom: 1px solid var(--color-border-subtle);
}

.company-table tr:last-child {
  border-bottom: none;
}

.company-table th {
  width: 25%;
  padding: 18px 24px;
  text-align: left;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-bg-alt);
  vertical-align: top;
}

.company-table td {
  padding: 18px 24px;
  font-size: 0.92rem;
  color: var(--color-text-main);
  line-height: 1.7;
}

/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact-wrapper {
  max-width: 700px;
  margin: 0 auto;
}

.contact-form-wrapper {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-md);
}

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

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

.form-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--color-primary);
}

.form-label .badge-req {
  background: #EF4444;
  color: #ffffff;
  font-size: 0.68rem;
  padding: 2px 5px;
  border-radius: 3px;
  margin-left: 4px;
}

.form-label .badge-opt {
  background: #94A3B8;
  color: #ffffff;
  font-size: 0.68rem;
  padding: 2px 5px;
  border-radius: 3px;
  margin-left: 4px;
}

.form-control {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--color-bg);
  color: var(--color-text-main);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  outline: none;
}

.form-control:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.12);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

.form-submit-btn {
  width: 100%;
  padding: 14px;
  font-size: 1rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background-color: #34496b;
  color: #bccde5;
  padding: 8px 0 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-brand img {
  height: 96px;
  width: auto;
  object-fit: contain;
  filter: brightness(0) invert(1);
}

.footer-brand p {
  font-size: 0.85rem;
  color: #CBD5E1;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-link {
  font-size: 0.9rem;
  color: #CBD5E1;
}

.footer-link:hover {
  color: #ffffff;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
}

.back-to-top-btn {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

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

/* ==========================================================================
   Animations & Modal
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  padding: 20px;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: #ffffff;
  border-radius: var(--radius-md);
  padding: 32px;
  max-width: 440px;
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow-lg);
  transform: scale(0.94);
  transition: transform 0.25s ease;
}

.modal-overlay.active .modal-card {
  transform: scale(1);
}

.modal-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(0, 102, 255, 0.1);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.modal-title {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.modal-desc {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 20px;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 860px) {
  :root {
    --header-height: 68px;
    --section-spacing: 60px;
  }

  .mobile-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: #ffffff;
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    box-shadow: var(--shadow-lg);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.25s ease;
  }

  .nav-menu.is-active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .brand-logo img {
    height: 64px;
  }

  .hero-title {
    font-size: 1.85rem;
  }

  .hero-actions {
    justify-content: center;
  }

  .about-simple-grid,
  .services-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .company-table th,
  .company-table td {
    display: block;
    width: 100%;
    padding: 12px 18px;
  }

  .company-table th {
    background: var(--color-bg-alt);
    border-bottom: none;
  }

  .footer-content {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }

  .footer-brand img {
    height: 64px;
    margin: 0 auto;
  }

  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
  }
}