/* ============================================
   CSS Variables
============================================ */
:root {
  --color-primary:     #1565C0;
  --color-primary-mid: #1E88E5;
  --color-primary-lt:  #E3F2FD;
  --color-accent:      #00ACC1;
  --color-accent-lt:   #E0F7FA;
  --color-text:        #1A2636;
  --color-text-muted:  #5C6B7A;
  --color-border:      #D0E4F5;
  --color-bg:          #F7FBFF;
  --color-white:       #FFFFFF;

  --font-base: 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;

  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  16px;

  --shadow-sm: 0 1px 4px rgba(21, 101, 192, 0.08);
  --shadow-md: 0 4px 16px rgba(21, 101, 192, 0.12);
  --shadow-lg: 0 8px 32px rgba(21, 101, 192, 0.16);

  --transition: 0.3s ease;

  --container-max: 1100px;
  --header-h:      68px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-base);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ============================================
   Container
============================================ */
.container {
  width: 92%;
  max-width: var(--container-max);
  margin: 0 auto;
}

/* ============================================
   Scroll Animation
============================================ */
.scroll-fade {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.scroll-fade.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ファーストビュー初期アニメーション */
.fade-in-up {
  opacity: 0;
  transform: translateY(32px);
  animation: fadeInUp 0.85s ease 0.2s forwards;
}

@keyframes fadeInUp {
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   Buttons
============================================ */
.btn {
  display: inline-block;
  padding: 12px 32px;
  border-radius: 100px;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: background var(--transition), color var(--transition),
              box-shadow var(--transition), transform var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}
.btn-primary:hover {
  background: var(--color-primary-mid);
  border-color: var(--color-primary-mid);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary-lt);
  transform: translateY(-1px);
}

/* ============================================
   Header
============================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  width: 92%;
  max-width: var(--container-max);
  margin: 0 auto;
}

.logo a {
  display: flex;
  align-items: baseline;
  gap: 6px;
}
.logo-text {
  font-size: 1.7rem;
  font-weight: 900;
  color: var(--color-primary);
  letter-spacing: 0.05em;
}
.logo-sub {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.global-nav ul {
  display: flex;
  gap: 4px;
}
.global-nav a {
  display: block;
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  font-weight: 500;
  transition: color var(--transition), background var(--transition);
}
.global-nav a:hover,
.global-nav a.active {
  color: var(--color-primary);
  background: var(--color-primary-lt);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ============================================
   First View
============================================ */
.fv {
  margin-top: var(--header-h);
  background-image: url('../images/fv-bg.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  min-height: calc(90vh - var(--header-h));
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.fv::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10, 40, 80, 0.72) 0%, rgba(10, 40, 80, 0.55) 100%);
  z-index: 1;
}

.fv-inner {
  width: 92%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 80px 0 120px;
  position: relative;
  z-index: 2;
  color: var(--color-white);
}

.fv-label {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.4);
  padding: 4px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
}

.fv-title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 900;
  color: var(--color-white);
  line-height: 1.35;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

.fv-desc {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 36px;
  line-height: 1.8;
}

.fv-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Wave decoration */
.fv-decoration {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1;
}

.wave-wrap {
  position: relative;
  height: 80px;
}

.wave {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 80px;
}

.wave1 { fill: rgba(21, 101, 192, 0.08); }
.wave2 { fill: rgba(0, 172, 193, 0.06); }

/* ============================================
   Section Common
============================================ */
.section {
  padding: 88px 0;
}

.section-head {
  text-align: center;
  margin-bottom: 56px;
}

.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--color-accent);
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 900;
  color: var(--color-primary);
  margin-bottom: 14px;
  letter-spacing: 0.03em;
}

.section-desc {
  color: var(--color-text-muted);
  font-size: 0.97rem;
}

/* ============================================
   Service Grid
============================================ */
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.service-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: box-shadow var(--transition), transform var(--transition),
              border-color var(--transition);
}

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

.service-card--wide {
  grid-column: span 3;
  display: flex;
  align-items: flex-start;
  gap: 24px;
}

.service-card--wide .service-icon {
  flex-shrink: 0;
}

.service-icon {
  width: 48px;
  height: 48px;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.service-card--wide .service-icon {
  margin-bottom: 0;
}

.service-name {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 10px;
  letter-spacing: 0.02em;
}

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

/* ============================================
   About Banner
============================================ */
.about-banner {
  background: linear-gradient(120deg, var(--color-primary) 0%, #0D47A1 100%);
  padding: 72px 0;
}

.about-banner-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.about-banner-text .section-label {
  color: rgba(255,255,255,0.6);
}

.about-banner-text h2 {
  font-size: clamp(1.3rem, 2.5vw, 1.75rem);
  font-weight: 900;
  color: var(--color-white);
  margin-bottom: 10px;
}

.about-banner-text p {
  color: rgba(255,255,255,0.75);
  font-size: 0.95rem;
}

.about-banner .btn-primary {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
  white-space: nowrap;
}

.about-banner .btn-primary:hover {
  background: var(--color-primary-lt);
  border-color: var(--color-primary-lt);
}

/* ============================================
   Contact
============================================ */
.contact-box {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.contact-tel,
.contact-form-link {
  flex: 1;
  padding: 48px 40px;
  text-align: center;
}

.contact-label {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.tel-number {
  display: block;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 900;
  color: var(--color-primary);
  letter-spacing: 0.06em;
  margin-bottom: 8px;
  transition: color var(--transition);
}
.tel-number:hover { color: var(--color-accent); }

.contact-hours {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.contact-box--tel-only {
  justify-content: center;
}
.contact-box--tel-only .contact-tel {
  flex: none;
  padding: 56px 80px;
}

/* ============================================
   Footer
============================================ */
.site-footer {
  background: var(--color-text);
  color: rgba(255,255,255,0.6);
  padding: 48px 0 24px;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.footer-logo {
  display: flex;
  align-items: baseline;
  gap: 6px;
}
.footer-logo .logo-text { color: var(--color-white); font-size: 1.4rem; }
.footer-logo .logo-sub  { color: rgba(255,255,255,0.5); font-size: 0.78rem; }

.footer-nav ul {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
.footer-nav a {
  display: block;
  padding: 4px 12px;
  font-size: 0.87rem;
  color: rgba(255,255,255,0.6);
  border-radius: 4px;
  transition: color var(--transition);
}
.footer-nav a:hover { color: var(--color-white); }

.copyright {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.35);
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.08);
}

/* ============================================
   Company Page
============================================ */
.page-hero {
  margin-top: var(--header-h);
  background: linear-gradient(135deg, #EBF5FF 0%, #DEEEFF 100%);
  padding: 72px 0;
  border-bottom: 1px solid var(--color-border);
}

.page-hero .section-label { display: block; margin-bottom: 10px; }

.page-hero h1 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 900;
  color: var(--color-primary);
  letter-spacing: 0.03em;
}

.company-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.97rem;
}

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

.company-table th {
  width: 200px;
  padding: 20px 16px;
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-primary-lt);
  text-align: left;
  vertical-align: top;
}

.company-table td {
  padding: 20px 24px;
  color: var(--color-text);
  vertical-align: top;
  line-height: 1.75;
}

.company-table tr:first-child th { border-radius: var(--radius-sm) 0 0 0; }
.company-table tr:first-child td { border-radius: 0 var(--radius-sm) 0 0; }

/* ============================================
   Responsive
============================================ */
@media (max-width: 900px) {
  .service-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .service-card--wide {
    grid-column: span 2;
  }
}

@media (max-width: 640px) {
  :root { --header-h: 60px; }

  .global-nav {
    display: none;
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    padding: 16px;
    box-shadow: var(--shadow-md);
  }

  .global-nav.open { display: block; }

  .global-nav ul {
    flex-direction: column;
  }

  .global-nav a {
    padding: 12px 16px;
    font-size: 1rem;
  }

  .nav-toggle { display: flex; }

  .fv-inner { padding: 56px 0 100px; }

  .section { padding: 64px 0; }

  .service-grid {
    grid-template-columns: 1fr;
  }

  .service-card--wide {
    grid-column: span 1;
    flex-direction: column;
    gap: 16px;
  }

  .about-banner-inner {
    flex-direction: column;
    text-align: center;
  }

  .contact-box {
    flex-direction: column;
  }

  .contact-tel, .contact-form-link {
    padding: 36px 24px;
  }

  .contact-divider {
    padding: 0;
  }
  .contact-divider::before,
  .contact-divider::after {
    width: 60px;
    height: 1px;
    display: inline-block;
    vertical-align: middle;
    margin: 0 10px;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .company-table th {
    width: 120px;
    font-size: 0.88rem;
  }
}