/*
Theme Name: Goto Lab Child
Template: twentytwentyfive
Version: 1.0
Author: Lab Web Team
Description: Goto Laboratory Official Website - Child Theme of Twenty Twenty-Five
*/

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

:root {
  --color-primary: #1a3c6e;
  --color-accent: #e8b741;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-bg: #ffffff;
  --color-bg-secondary: #f5f7fa;
  --color-border: #e0e0e0;
  --font-jp: 'Noto Sans JP', sans-serif;
  --font-en: 'Oswald', sans-serif;
  --content-width: 1200px;
  --section-spacing: 80px;
  --transition: all 0.3s ease;
}

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

body {
  font-family: var(--font-jp);
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-jp);
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-primary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

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

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

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

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

.section { padding: var(--section-spacing) 0; }
.section-alt { background-color: var(--color-bg-secondary); }

.site-header {
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  transition: var(--transition);
}

.site-header.scrolled {
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.header-inner {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.site-logo {
  font-family: var(--font-en);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

.site-logo span {
  font-family: var(--font-jp);
  font-size: 0.9rem;
  font-weight: 400;
  display: block;
  color: var(--color-text-light);
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: 32px;
}

.main-nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: var(--transition);
}

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

.lang-switcher {
  display: flex;
  gap: 8px;
  align-items: center;
}

.lang-switcher a {
  font-size: 0.8rem;
  font-weight: 500;
  padding: 4px 8px;
  border-radius: 4px;
}

.lang-switcher a.active {
  background-color: var(--color-primary);
  color: var(--color-bg);
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 10px;
}

.mobile-menu-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background-color: var(--color-primary);
  transition: var(--transition);
}

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, #2c5282 100%);
  color: var(--color-bg);
  text-align: center;
  overflow: hidden;
}

.hero h1 {
  font-family: var(--font-en);
  font-size: 3.5rem;
  font-weight: 300;
  color: var(--color-bg);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.hero .subtitle {
  font-size: 1.25rem;
  font-weight: 300;
  margin-bottom: 24px;
  opacity: 0.9;
}

.hero .lab-name {
  font-size: 1rem;
  font-weight: 400;
  opacity: 0.8;
  margin-bottom: 40px;
}

.section-title {
  text-align: center;
  margin-bottom: 60px;
}

.section-title h2 {
  font-family: var(--font-en);
  font-size: 2.5rem;
  font-weight: 300;
  color: var(--color-primary);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.section-title h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background-color: var(--color-accent);
  margin: 16px auto 0;
}

.section-title .subtitle {
  font-size: 1rem;
  color: var(--color-text-light);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.card {
  background: var(--color-bg);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card-content { padding: 24px; }

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

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

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

.news-item {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
}

.news-date {
  font-family: var(--font-en);
  font-size: 0.85rem;
  color: var(--color-text-light);
  min-width: 100px;
  flex-shrink: 0;
}

.news-title {
  font-size: 1rem;
  color: var(--color-text);
}

.member-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 40px;
}

.member-card {
  text-align: center;
  padding: 40px 24px;
  background: var(--color-bg);
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.member-photo {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 20px;
  border: 4px solid var(--color-bg-secondary);
}

.member-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.member-name-en {
  font-family: var(--font-en);
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.member-role {
  font-size: 0.9rem;
  color: var(--color-accent);
  font-weight: 500;
}

.form-group { margin-bottom: 24px; }

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-family: var(--font-jp);
  font-size: 1rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26, 60, 110, 0.1);
}

.btn-primary {
  display: inline-block;
  padding: 14px 40px;
  background-color: var(--color-primary);
  color: var(--color-bg);
  font-weight: 500;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary:hover {
  background-color: var(--color-accent);
  color: var(--color-primary);
}

.site-footer {
  background-color: var(--color-primary);
  color: var(--color-bg);
  padding: 60px 0 20px;
}

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

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-logo {
  font-family: var(--font-en);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-desc {
  font-size: 0.9rem;
  opacity: 0.8;
  line-height: 1.7;
}

.footer-links h4 {
  color: var(--color-bg);
  font-size: 1rem;
  margin-bottom: 16px;
}

.footer-links ul { list-style: none; }
.footer-links li { margin-bottom: 8px; }

.footer-links a {
  color: var(--color-bg);
  opacity: 0.8;
  font-size: 0.9rem;
}

.footer-links a:hover {
  opacity: 1;
  color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
  text-align: center;
  font-size: 0.8rem;
  opacity: 0.6;
}

@media (max-width: 768px) {
  .header-inner { height: 60px; }
  .main-nav {
    display: none;
    position: absolute;
    top: 60px;
    left: 0; right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 20px;
  }
  .main-nav.active { display: block; }
  .main-nav ul { flex-direction: column; gap: 16px; }
  .mobile-menu-toggle { display: flex; }
  .hero h1 { font-size: 2rem; }
  .section-title h2 { font-size: 1.75rem; }
  .card-grid, .member-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .news-item { flex-direction: column; gap: 8px; }
}