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

/* Material Design CSS for 生化学解析センター */
:root {
  /* Material Design Colors */
  --primary-color: #1976d2;
  --primary-light: #42a5f5;
  --primary-dark: #1565c0;
  --secondary-color: #388e3c;
  --secondary-light: #66bb6a;
  --secondary-dark: #2e7d32;
  --accent-color: #ff5722;
  --background-color: #fafafa;
  --surface-color: #ffffff;
  --text-primary: #212121;
  --text-secondary: #757575;
  --text-hint: #9e9e9e;
  --divider-color: #e0e0e0;
  
  /* Shadows */
  --elevation-1: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
  --elevation-2: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23);
  --elevation-3: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);
  --elevation-4: 0 14px 28px rgba(0,0,0,0.25), 0 10px 10px rgba(0,0,0,0.22);
  
  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: 'Roboto', 'Noto Sans JP', sans-serif;
  font-weight: 400;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--background-color);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
.display-1 {
  font-size: 3.5rem;
  font-weight: 300;
  letter-spacing: -0.02em;
}

.display-2 {
  font-size: 2.8rem;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.headline {
  font-size: 2rem;
  font-weight: 400;
  letter-spacing: 0;
}

.title {
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.subheading {
  font-size: 1.125rem;
  font-weight: 400;
  letter-spacing: 0.01em;
}

.body-1 {
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.03em;
}

.body-2 {
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.caption {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
}

/* Header */
header {
  background-color: var(--surface-color);
  box-shadow: var(--elevation-2);
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--primary-color);
  text-decoration: none;
}

/* Navigation */
.nav-container {
  background-color: var(--primary-color);
  color: white;
  position: fixed;
  top: 80px;
  width: 100%;
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--primary-color);
  cursor: pointer;
  padding: var(--spacing-sm);
  position: absolute;
  left: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  z-index: 1001;
}

.hamburger .material-icons {
  font-size: 28px;
}

.nav-menu {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  list-style: none;
  overflow-x: auto;
  padding: 0 var(--spacing-lg);
}

.nav-item {
  white-space: nowrap;
}

.nav-link {
  display: block;
  padding: var(--spacing-md) var(--spacing-lg);
  color: white;
  text-decoration: none;
  transition: background-color 0.3s ease;
  border-radius: 4px;
  margin: var(--spacing-xs);
}

.nav-link:hover,
.nav-link.active {
  background-color: rgba(255, 255, 255, 0.1);
  text-decoration: none;
}

/* Main Content */
main {
  margin-top: 140px;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding: 0 var(--spacing-lg);
}

/* Sections */
.section {
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-lg) 0;
}

.section:first-child {
  padding-top: var(--spacing-lg);
}

.section-title {
  font-size: 2rem;
  font-weight: 500;
  color: var(--primary-color);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--primary-color);
}

/* Cards */
.card {
  background-color: var(--surface-color);
  border-radius: 8px;
  box-shadow: var(--elevation-1);
  margin-bottom: var(--spacing-md);
  transition: box-shadow 0.3s ease;
}

.card:hover {
  box-shadow: var(--elevation-2);
}

.card-content {
  padding: var(--spacing-lg);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

/* Grid Layout */
.grid {
  display: grid;
  gap: var(--spacing-md);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Equipment Lists */
.equipment-category {
  margin-bottom: var(--spacing-xl);
}

.equipment-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--divider-color);
  margin-bottom: var(--spacing-md);
  transition: background-color 0.3s ease;
}

.equipment-header:hover {
  background-color: rgba(0, 0, 0, 0.04);
  padding-left: var(--spacing-sm);
  padding-right: var(--spacing-sm);
  border-radius: 4px;
}

.equipment-category h3 {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--secondary-color);
  margin-bottom: 0;
}

.toggle-icon {
  font-size: 1rem;
  color: var(--text-secondary);
  transition: transform 0.3s ease;
}

.equipment-content {
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.equipment-list {
  list-style: none;
  padding-left: 0;
}

.equipment-item {
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--divider-color);
  color: var(--text-secondary);
}

.equipment-item:last-child {
  border-bottom: none;
}

/* Member Cards */
.member-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

.member-card {
  background-color: var(--surface-color);
  border-radius: 8px;
  box-shadow: var(--elevation-1);
  padding: var(--spacing-lg);
  text-align: center;
  transition: box-shadow 0.3s ease;
}

.member-card:hover {
  box-shadow: var(--elevation-2);
}

.member-status {
  color: var(--secondary-color);
  font-weight: 500;
  font-size: 0.875rem;
  margin-bottom: var(--spacing-sm);
}

.member-name {
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
}

.member-post {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.member-specialty {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-top: var(--spacing-sm);
}

/* Contact Info */
.contact-card {
  background-color: var(--primary-color);
  color: white;
  padding: var(--spacing-xl);
  border-radius: 8px;
  margin-bottom: var(--spacing-lg);
}

.contact-card h3 {
  margin-bottom: var(--spacing-md);
}

.contact-info {
  line-height: 1.8;
}

/* Footer */
footer {
  background-color: var(--text-primary);
  color: white;
  padding: var(--spacing-xl) 0;
  margin-top: var(--spacing-xxl);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  text-align: center;
}

.footer-address {
  margin-bottom: var(--spacing-md);
  line-height: 1.8;
}

.footer-copyright {
  font-size: 0.875rem;
  color: var(--text-hint);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  border-radius: 4px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
}

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

.btn-primary:hover {
  background-color: var(--primary-dark);
  box-shadow: var(--elevation-2);
}

.btn-secondary {
  background-color: var(--secondary-color);
  color: white;
}

.btn-secondary:hover {
  background-color: var(--secondary-dark);
  box-shadow: var(--elevation-2);
}

/* Utility Classes */
.text-center {
  text-align: center;
}

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

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

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

/* Responsive Design */
@media (max-width: 768px) {
  .header-container {
    padding: var(--spacing-sm) var(--spacing-md);
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .nav-container {
    top: 120px;
  }
  
  main {
    margin-top: 180px;
    padding: 0 var(--spacing-md);
  }
  
  /* Hamburger menu for mobile */
  .hamburger {
    display: block;
  }
  
  .nav-menu {
    position: fixed;
    top: 120px;
    left: -100%;
    width: 80%;
    max-width: 300px;
    height: calc(100vh - 120px);
    background-color: var(--primary-color);
    flex-direction: column;
    padding: var(--spacing-lg);
    transition: left 0.3s ease;
    overflow-y: auto;
    box-shadow: var(--elevation-4);
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-link {
    margin: var(--spacing-xs) 0;
    width: 100%;
  }
  
  .section-title {
    font-size: 1.5rem;
  }
  
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
  
  .member-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .display-1 {
    font-size: 2.5rem;
  }
  
  .display-2 {
    font-size: 2rem;
  }
  
  .headline {
    font-size: 1.5rem;
  }
  
  main {
    padding: 0 var(--spacing-sm);
  }
  
  .card-content {
    padding: var(--spacing-md);
  }
  
  .contact-card {
    padding: var(--spacing-lg);
  }
}

/* 学内限定バッジ */
a[href^="inside/"]::after {
  content: "🔒 学内限定";
  font-size: 0.6rem;
  font-weight: 800;
  padding: 2px 5px;
  border-radius: 3px;
  margin-left: 6px;
  letter-spacing: 0.04em;
  line-height: 1.4;
  display: inline-block;
  vertical-align: middle;
  white-space: nowrap;
  background-color: white;
  color: #e65100;
  border: 1px solid #e65100;
}

/* File Type Badges */
a[href$=".pdf"]::before,
a[href$=".doc"]::before,
a[href$=".docx"]::before,
a[href$=".xlsx"]::before,
a[href$=".xls"]::before {
  font-size: 0.6rem;
  font-weight: 800;
  padding: 2px 5px;
  border-radius: 3px;
  margin-right: 6px;
  letter-spacing: 0.04em;
  line-height: 1.4;
  display: inline-block;
  vertical-align: middle;
  white-space: nowrap;
}

a[href$=".pdf"]::before {
  content: "PDF";
  background-color: white;
  color: #c62828;
}

a[href$=".doc"]::before,
a[href$=".docx"]::before {
  content: "Word";
  background-color: white;
  color: #1565c0;
}

a[href$=".xlsx"]::before,
a[href$=".xls"]::before {
  content: "Excel";
  background-color: white;
  color: #2e7d32;
}

/* Print Styles */
@media print {
  header,
  .nav-container {
    display: none;
  }
  
  main {
    margin-top: 0;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid var(--divider-color);
  }
}