/* 
  joken.jp 公式ポータル統合スタイルシート
  コンセプト: デジタル庁風ユニバーサルデザイン (UD) 配慮 & モダン・シンプル
*/

:root {
  --color-bg-main: #FAFAFA;
  --color-bg-surface: #FFFFFF;
  --color-text-main: #111827;
  --color-text-muted: #4B5563;
  --color-text-inverse: #FFFFFF;

  --color-primary: #0F4C81;
  --color-primary-hover: #0A375E;
  --color-primary-light: #EFF6FF;

  --color-accent: #2563EB;
  --color-border: #E5E7EB;
  --color-border-dark: #D1D5DB;

  --font-family-base: 'Inter', 'Noto Sans JP', 'BIZ UDPGothic', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-family-code: 'Courier New', Consolas, monospace;

  --container-max-width: 1120px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.05);
}

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

html {
  font-family: var(--font-family-base);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text-main);
  background-color: var(--color-bg-main);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body { min-height: 100vh; display: flex; flex-direction: column; }

:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 3px; }

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: 0.75rem 1.25rem;
  z-index: 9999;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  font-weight: 700;
  text-decoration: none;
  transition: top 0.2s ease;
}
.skip-link:focus { top: 0; }

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--color-text-main);
  font-weight: 700;
}

.logo-badge {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  letter-spacing: 0.05em;
}

.logo-text { font-size: 1.15rem; letter-spacing: -0.01em; }

.nav-list { display: flex; align-items: center; gap: 1.75rem; list-style: none; }

.nav-link {
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.15s ease;
}
.nav-link:hover { color: var(--color-primary); }

.nav-btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-inverse) !important;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-md);
  transition: background-color 0.15s ease;
}
.nav-btn-primary:hover { background-color: var(--color-primary-hover); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border-dark);
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.hero-section {
  background-color: var(--color-bg-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 5rem 0;
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 3rem;
  align-items: center;
}

.hero-badge-group {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 0.875rem;
  font-weight: 700;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  margin-bottom: 1.5rem;
}

.status-dot {
  width: 8px;
  height: 8px;
  background-color: var(--color-accent);
  border-radius: 50%;
}

.hero-title {
  font-size: 2.75rem;
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text-main);
  margin-bottom: 1.25rem;
}

.hero-lead {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  max-width: 600px;
}

.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.75rem;
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all 0.15s ease;
  cursor: pointer;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  border: 1px solid var(--color-primary);
}
.btn-primary:hover { background-color: var(--color-primary-hover); }

.btn-secondary {
  background-color: var(--color-bg-surface);
  color: var(--color-text-main);
  border: 1px solid var(--color-border-dark);
}
.btn-secondary:hover { background-color: var(--color-bg-main); }

.hero-card {
  background: var(--color-bg-main);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
}

.hero-card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-main);
  border-bottom: 2px solid var(--color-primary);
  padding-bottom: 0.5rem;
  margin-bottom: 1.25rem;
}

.stats-list { display: flex; flex-direction: column; gap: 1rem; }
.stat-item dt { font-size: 0.85rem; color: var(--color-text-muted); }
.stat-item dd { font-size: 1.1rem; font-weight: 700; color: var(--color-text-main); }
.stat-item code {
  font-family: var(--font-family-code);
  background-color: #E2E8F0;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.95rem;
}

.news-section {
  background-color: var(--color-bg-main);
  border-bottom: 1px solid var(--color-border);
  padding: 3rem 0;
}

.news-list {
  list-style: none;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.news-item {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
}
.news-item:last-child { border-bottom: none; }

.news-date {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  font-family: var(--font-family-code);
  font-weight: 500;
  white-space: nowrap;
}

.category-tag {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  white-space: nowrap;
}
.tag-info { background-color: #E0F2FE; color: #0369A1; }

.news-title {
  color: var(--color-text-main);
  text-decoration: none;
  font-weight: 500;
}
.news-title:hover { text-decoration: underline; color: var(--color-primary); }

.section { padding: 5rem 0; }
.section-header { margin-bottom: 3rem; }
.section-title { font-size: 2rem; font-weight: 700; letter-spacing: -0.01em; color: var(--color-text-main); }
.section-lead { font-size: 1.1rem; color: var(--color-text-muted); margin-top: 0.5rem; }

.grid { display: grid; gap: 1.75rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

.card {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

.card-icon { font-size: 2.25rem; margin-bottom: 1rem; }
.card-title { font-size: 1.25rem; font-weight: 700; margin-bottom: 0.75rem; }
.card-text { color: var(--color-text-muted); font-size: 0.95rem; line-height: 1.6; }

.team-card { display: flex; flex-direction: column; position: relative; }
.team-badge {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  align-self: flex-start;
  margin-bottom: 0.75rem;
  letter-spacing: 0.05em;
}
.badge-accent { background-color: #FEF3C7; color: #B45309; }
.team-meta {
  margin-top: auto;
  padding-top: 1.25rem;
  border-top: 1px dashed var(--color-border);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}
.highlight-card { background-color: #FAFAF9; border: 1px solid #E7E5E4; }

.comp-section {
  background-color: var(--color-bg-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.comp-table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}
.comp-table { width: 100%; border-collapse: collapse; text-align: left; background-color: var(--color-bg-surface); font-size: 0.95rem; }
.comp-table th, .comp-table td { padding: 1.1rem 1.25rem; border-bottom: 1px solid var(--color-border); }
.comp-table thead th { background-color: var(--color-primary); color: var(--color-text-inverse); font-weight: 700; font-size: 0.9rem; letter-spacing: 0.03em; }
.comp-table tbody tr:hover { background-color: var(--color-primary-light); }
.table-tag { font-size: 0.8rem; font-weight: 700; padding: 0.2rem 0.5rem; background-color: #F3F4F6; border: 1px solid var(--color-border-dark); border-radius: 4px; color: var(--color-text-main); white-space: nowrap; }

.events-section { background-color: var(--color-bg-main); }
.timeline { display: flex; flex-direction: column; gap: 1.5rem; position: relative; max-width: 800px; margin: 0 auto; }
.timeline-item { display: grid; grid-template-columns: 120px 1fr; gap: 1.5rem; align-items: start; background-color: var(--color-bg-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 1.5rem; box-shadow: var(--shadow-sm); }
.highlight-timeline { border-left: 5px solid var(--color-primary); background-color: #F0F9FF; }
.timeline-marker { font-size: 1.1rem; font-weight: 700; color: var(--color-primary); background-color: var(--color-primary-light); padding: 0.5rem; border-radius: var(--radius-sm); text-align: center; }
.timeline-title { font-size: 1.15rem; font-weight: 700; margin-bottom: 0.35rem; }

.join-box { background-color: var(--color-primary-light); border: 1px solid #BFDBFE; border-radius: var(--radius-lg); padding: 3rem; }
.join-title { font-size: 1.75rem; color: var(--color-primary); margin-bottom: 1rem; }
.join-lead { font-size: 1.05rem; color: var(--color-text-main); margin-bottom: 1.75rem; }
.join-details { display: flex; gap: 2rem; flex-wrap: wrap; border-top: 1px solid #93C5FD; padding-top: 1.25rem; }

.site-footer { background-color: #111827; color: #9CA3AF; margin-top: auto; }
.footer-container { display: flex; justify-content: space-between; align-items: center; padding-top: 3rem; padding-bottom: 3rem; flex-wrap: wrap; gap: 2rem; }
.footer-logo { font-size: 1.25rem; font-weight: 700; color: #FFFFFF; }
.footer-desc { font-size: 0.9rem; margin-top: 0.25rem; }
.footer-links { display: flex; gap: 1.5rem; }
.footer-links a { color: #D1D5DB; text-decoration: none; font-size: 0.95rem; }
.footer-links a:hover { color: #FFFFFF; text-decoration: underline; }
.footer-bottom { border-top: 1px solid #1F2937; padding: 1.5rem 0; font-size: 0.85rem; text-align: center; }

@media (max-width: 900px) {
  .hero-container { grid-template-columns: 1fr; }
  .hero-title { font-size: 2.2rem; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .timeline-item { grid-template-columns: 1fr; gap: 0.75rem; }
  .timeline-marker { text-align: left; display: inline-block; width: fit-content; padding: 0.25rem 0.75rem; }
}

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .primary-nav {
    display: none;
    position: absolute;
    top: 4.5rem;
    left: 0;
    width: 100%;
    background-color: var(--color-bg-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
  }
  .primary-nav.is-open { display: block; }
  .nav-list { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .nav-btn-primary { width: 100%; text-align: center; }
}