/* ============================================================
   BayBridge Inc. — Main Stylesheet
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Jost:wght@300;400;500;600;700&family=Noto+Sans+JP:wght@300;400;500;700&display=swap');

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

:root {
  --color-primary:    #10A6C0;
  --color-dark:       #393D43;
  --color-bg:         #fbfbfb;
  --color-text:       #757575;
  --color-heading:    #222222;
  --color-white:      #ffffff;
  --font-en:          'Jost', sans-serif;
  --font-ja:          'Noto Sans JP', sans-serif;
  --max-width:        1140px;
  --transition:       0.25s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-ja);
  font-size: 17px;
  line-height: 1.8;
  color: var(--color-text);
  background: var(--color-bg);
}

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

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

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

ul {
  list-style: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--color-dark);
  box-shadow: 0 2px 12px rgba(0,0,0,.18);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.site-logo {
  font-family: var(--font-en);
  font-size: 26px;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: 1px;
}

.site-logo span {
  color: var(--color-primary);
}

/* Nav */
.site-nav ul {
  display: flex;
  gap: 32px;
  align-items: center;
}

.site-nav a {
  font-family: var(--font-en);
  font-size: 15px;
  font-weight: 500;
  color: var(--color-white);
  letter-spacing: 0.5px;
  position: relative;
  padding-bottom: 4px;
}

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

.site-nav a:hover,
.site-nav a.active {
  color: var(--color-primary);
}

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

/* Hamburger */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  transition: var(--transition);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--color-dark) 0%, #1a2a3a 60%, #0d2b35 100%);
  overflow: hidden;
  padding-top: 70px;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 80% 50%, rgba(16,166,192,.18) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 20% 80%, rgba(16,166,192,.10) 0%, transparent 60%);
  pointer-events: none;
}

/* Grid lines decoration */
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(16,166,192,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16,166,192,.06) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.hero-eyebrow {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 20px;
  border: 1px solid rgba(16,166,192,.4);
  padding: 6px 16px;
  border-radius: 2px;
}

.hero h1 {
  font-family: var(--font-en);
  font-size: clamp(38px, 5vw, 60px);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.2;
  margin-bottom: 28px;
}

.hero h1 em {
  font-style: normal;
  color: var(--color-primary);
}

.hero-subtitle {
  font-size: 18px;
  color: rgba(255,255,255,.75);
  max-width: 620px;
  margin-bottom: 48px;
  line-height: 1.9;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-en);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.5px;
  padding: 14px 32px;
  border-radius: 4px;
  transition: all 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: transparent;
  color: var(--color-primary);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,.5);
}

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

/* ---------- Section Commons ---------- */
section {
  padding: 96px 0;
}

.section-label {
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-en);
  font-size: clamp(28px, 3vw, 44px);
  font-weight: 700;
  color: var(--color-heading);
  line-height: 1.25;
  margin-bottom: 20px;
}

.section-desc {
  font-size: 17px;
  color: var(--color-text);
  max-width: 640px;
  line-height: 1.9;
}

/* ---------- About / Message ---------- */
.about {
  background: var(--color-white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

.about-visual {
  position: relative;
}

.about-visual-inner {
  background: linear-gradient(135deg, var(--color-dark), #0d2b35);
  border-radius: 8px;
  padding: 56px 48px;
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}

.about-visual-inner::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(16,166,192,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16,166,192,.08) 1px, transparent 1px);
  background-size: 40px 40px;
}

.about-quote {
  position: relative;
  z-index: 1;
  font-size: clamp(22px, 2.5vw, 32px);
  font-weight: 700;
  line-height: 1.5;
}

.about-quote span {
  color: var(--color-primary);
}

.about-badge {
  position: absolute;
  bottom: -20px;
  right: 32px;
  background: var(--color-primary);
  color: var(--color-white);
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 10px 20px;
  border-radius: 4px;
  z-index: 1;
}

.about-text p {
  margin-bottom: 20px;
}

.about-text p:last-of-type {
  margin-bottom: 32px;
}

/* ---------- Services ---------- */
.services {
  background: var(--color-bg);
}

.services-header {
  text-align: center;
  margin-bottom: 64px;
}

.services-header .section-desc {
  margin: 0 auto;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.service-card {
  background: var(--color-white);
  border-radius: 8px;
  padding: 40px 32px;
  border: 1px solid rgba(0,0,0,.06);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-primary);
  transform: scaleX(0);
  transition: transform var(--transition);
  transform-origin: left;
}

.service-card:hover {
  box-shadow: 0 12px 40px rgba(0,0,0,.10);
  transform: translateY(-4px);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 56px;
  height: 56px;
  background: rgba(16,166,192,.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.service-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--color-primary);
  fill: none;
}

.service-card h3 {
  font-family: var(--font-en);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-heading);
  margin-bottom: 14px;
}

.service-card p {
  font-size: 15px;
  line-height: 1.8;
}

.service-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  margin-top: 20px;
}

.service-card .card-link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition);
}

.service-card:hover .card-link svg {
  transform: translateX(4px);
}

/* ---------- Features / Why ---------- */
.features {
  background: var(--color-dark);
  color: var(--color-white);
}

.features .section-title {
  color: var(--color-white);
}

.features-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.features-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin-top: 40px;
}

.feature-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.feature-num {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 2px solid var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-primary);
}

.feature-item h4 {
  font-family: var(--font-en);
  font-size: 17px;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 6px;
}

.feature-item p {
  font-size: 15px;
  color: rgba(255,255,255,.65);
  line-height: 1.8;
}

.features-visual {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(16,166,192,.2);
  border-radius: 8px;
  padding: 48px;
  position: relative;
  overflow: hidden;
}

.features-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(16,166,192,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16,166,192,.06) 1px, transparent 1px);
  background-size: 40px 40px;
}

.stat-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

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

.stat-num {
  font-family: var(--font-en);
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 14px;
  color: rgba(255,255,255,.6);
}

/* ---------- Company ---------- */
.company {
  background: var(--color-white);
}

.company-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 64px;
  align-items: start;
}

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

.company-table tr {
  border-bottom: 1px solid rgba(0,0,0,.07);
}

.company-table th,
.company-table td {
  padding: 16px 0;
  font-size: 15px;
  text-align: left;
  vertical-align: top;
}

.company-table th {
  font-weight: 600;
  color: var(--color-heading);
  width: 130px;
  white-space: nowrap;
}

.company-table td {
  color: var(--color-text);
}

/* ---------- Contact ---------- */
.contact {
  background: var(--color-bg);
}

.contact-inner {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
}

.contact-inner .section-title {
  margin-bottom: 16px;
}

.contact-inner .section-desc {
  margin: 0 auto 48px;
}

.contact-form {
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-heading);
}

.form-group input,
.form-group textarea,
.form-group select {
  padding: 12px 16px;
  border: 1px solid rgba(0,0,0,.15);
  border-radius: 4px;
  font-family: var(--font-ja);
  font-size: 16px;
  color: var(--color-heading);
  background: var(--color-white);
  transition: border-color var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(16,166,192,.12);
}

.form-group textarea {
  resize: vertical;
  min-height: 140px;
}

.form-submit {
  text-align: center;
  margin-top: 8px;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-dark);
  color: rgba(255,255,255,.65);
  padding: 72px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 56px;
  padding-bottom: 56px;
}

.footer-brand .site-logo {
  margin-bottom: 16px;
  display: inline-block;
}

.footer-brand p {
  font-size: 15px;
  line-height: 1.8;
  max-width: 320px;
  margin-bottom: 24px;
}

.social-links {
  display: flex;
  gap: 12px;
}

.social-link {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.2);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.social-link:hover {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: var(--color-white);
}

.social-link svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.footer-col h4 {
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--color-white);
  margin-bottom: 20px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  font-size: 15px;
  color: rgba(255,255,255,.55);
}

.footer-col a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 14px;
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .about-grid,
  .features-inner,
  .company-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

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

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

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 680px) {
  section {
    padding: 64px 0;
  }

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

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .menu-toggle {
    display: flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--color-dark);
    padding: 24px;
    border-top: 1px solid rgba(255,255,255,.08);
  }

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

  .site-nav ul {
    flex-direction: column;
    gap: 0;
    align-items: flex-start;
  }

  .site-nav li {
    width: 100%;
    border-bottom: 1px solid rgba(255,255,255,.06);
  }

  .site-nav a {
    display: block;
    padding: 14px 0;
  }

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