/* F-MINUS 社内HP - 共通スタイル */
:root {
  --color-primary: #1a1a2e;
  --color-secondary: #16213e;
  --color-accent: #0f3460;
  --color-highlight: #e94560;
  --color-bg: #f8f9fa;
  --color-text: #2d3436;
  --color-text-light: #636e72;
  --color-border: #dfe6e9;
  --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans JP', sans-serif;
}

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

body {
  font-family: var(--font-main);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}

/* ナビゲーション */
.nav {
  background: var(--color-primary);
  padding: 0.75rem 2rem;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-logo {
  color: #fff;
  font-size: 1.1rem;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.nav-links a {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: #fff;
}

/* メインコンテンツ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--color-primary);
}

.page-subtitle {
  color: var(--color-text-light);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

/* カードグリッド */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.5rem;
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.2s, transform 0.1s;
}

.card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.card-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.card-desc {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.card-tag {
  display: inline-block;
  font-size: 0.7rem;
  background: var(--color-accent);
  color: #fff;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  margin-bottom: 0.75rem;
}

/* フッター */
.footer {
  text-align: center;
  padding: 2rem;
  color: var(--color-text-light);
  font-size: 0.8rem;
  border-top: 1px solid var(--color-border);
  margin-top: 3rem;
}