/* ========================================
   一般社団法人NOヘルスイノベーション協議会
   共通スタイルシート
   ======================================== */

/* ---- ベース設定 ---- */
:root {
  --color-primary: #1a5f7a;
  --color-primary-dark: #134b61;
  --color-secondary: #57c5b6;
  --color-accent: #159895;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-bg: #ffffff;
  --color-bg-light: #f8f9fa;
  --color-border: #e0e0e0;
  --font-base: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Meiryo', sans-serif;
  --font-heading: 'Noto Serif JP', 'Hiragino Mincho ProN', 'Yu Mincho', serif;
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --transition: all 0.3s ease;
}

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

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

body {
  font-family: var(--font-base);
  color: var(--color-text);
  line-height: 1.8;
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

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

/* ---- レイアウト ---- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.section-light {
  background-color: var(--color-bg-light);
}

/* ---- ヘッダー ---- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo-img {
  height: 60px;
  width: auto;
  display: block;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

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

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

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

.nav-link:hover {
  color: var(--color-primary);
}

/* ハンバーガーメニュー */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}

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

/* ---- ヒーローセクション ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1a5f7a 0%, #159895 50%, #57c5b6 100%);
  overflow: hidden;
  padding-top: 72px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.3;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: #fff;
  padding: 40px 24px;
  max-width: 800px;
}

.hero-subtitle {
  font-size: 0.9rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  margin-bottom: 16px;
  opacity: 0.9;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 24px;
}

.hero-lead {
  font-size: 1.1rem;
  line-height: 1.9;
  opacity: 0.95;
  max-width: 640px;
  margin: 0 auto 40px;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background-color: #fff;
  color: var(--color-primary);
  font-weight: 600;
  border-radius: 4px;
  transition: var(--transition);
}

.hero-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: var(--color-primary);
}

/* ---- セクション見出し ---- */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.4;
  margin-bottom: 16px;
}

.section-desc {
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto;
}

/* ---- カード ---- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.card {
  background: #fff;
  border-radius: 8px;
  padding: 32px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.card-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.25rem;
  margin-bottom: 20px;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.card-text {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ---- Aboutページ固有 ---- */
.about-hero {
  position: relative;
  padding: 160px 0 80px;
  background: linear-gradient(135deg, #1a5f7a 0%, #159895 100%);
  color: #fff;
  text-align: center;
}

.about-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.about-hero-content {
  position: relative;
  z-index: 1;
}

.about-hero-title {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.about-hero-lead {
  font-size: 1rem;
  opacity: 0.95;
  max-width: 680px;
  margin: 0 auto;
  line-height: 1.9;
}

/* リード文ブロック */
.lead-block {
  background-color: var(--color-bg-light);
  padding: 48px 40px;
  border-radius: 8px;
  border-left: 4px solid var(--color-accent);
  margin-bottom: 64px;
}

.lead-block p {
  font-size: 1.05rem;
  line-height: 2;
  color: var(--color-text);
}

.lead-block strong {
  color: var(--color-primary);
}

/* コンテンツセクション */
.content-section {
  margin-bottom: 64px;
}

.content-section:last-child {
  margin-bottom: 0;
}

.content-heading {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-border);
}

.content-text {
  font-size: 1rem;
  line-height: 2;
  color: var(--color-text);
}

.content-text p + p {
  margin-top: 1.5em;
}

/* 番号付きリスト */
.numbered-list {
  list-style: none;
  counter-reset: item;
}

.numbered-list li {
  position: relative;
  padding-left: 56px;
  margin-bottom: 32px;
}

.numbered-list li::before {
  counter-increment: item;
  content: counter(item);
  position: absolute;
  left: 0;
  top: 0;
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
}

.list-title {
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
  font-size: 1.05rem;
}

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

/* 価値観グリッド */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 32px;
}

.value-item {
  text-align: center;
  padding: 32px 24px;
  background: #fff;
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.value-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.value-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.25rem;
  margin: 0 auto 20px;
}

.value-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.value-text {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ビジョンボックス */
.vision-box {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  padding: 48px 40px;
  border-radius: 12px;
  text-align: center;
  margin-top: 32px;
}

.vision-box p {
  font-size: 1.05rem;
  line-height: 2;
  opacity: 0.95;
}

/* 締めのメッセージ */
.closing-message {
  background-color: var(--color-bg-light);
  padding: 48px 40px;
  border-radius: 8px;
  text-align: center;
  margin-top: 48px;
}

.closing-message p {
  font-size: 1.05rem;
  line-height: 2;
  color: var(--color-text);
}

/* ---- トップページ固有 ---- */
.top-about {
  padding: 80px 0;
}

.top-about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.top-about-image {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.top-about-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.top-about-content {
  padding: 24px 0;
}

.top-about-title {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 20px;
  line-height: 1.4;
}

.top-about-text {
  color: var(--color-text-light);
  line-height: 2;
  margin-bottom: 28px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background-color: var(--color-primary);
  color: #fff;
  font-weight: 600;
  border-radius: 4px;
  transition: var(--transition);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: #fff;
}

/* 活動概要 */
.activity-preview {
  padding: 80px 0;
  background-color: var(--color-bg-light);
}

/* ---- フッター ---- */
.footer {
  background-color: #1a3a4a;
  color: #fff;
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-logo {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.4;
}

.footer-logo span {
  display: block;
  font-size: 0.75rem;
  font-weight: 400;
  opacity: 0.7;
  font-family: var(--font-base);
  margin-top: 4px;
}

.footer-desc {
  font-size: 0.85rem;
  opacity: 0.8;
  line-height: 1.8;
}

.footer-heading {
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: 0.05em;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: rgba(255,255,255,0.8);
  font-size: 0.85rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: #fff;
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  text-align: center;
  font-size: 0.8rem;
  opacity: 0.6;
}

/* ---- ユーティリティ ---- */
.text-center {
  text-align: center;
}

.mt-4 {
  margin-top: 16px;
}

.mt-8 {
  margin-top: 32px;
}

/* ---- アニメーション ---- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---- レスポンシブ ---- */
@media (max-width: 1024px) {
  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: 64px;
  }

  .logo-img {
    height: 52px;
  }

  .nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background-color: #fff;
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    box-shadow: var(--shadow-md);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
  }

  .nav.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .menu-toggle {
    display: flex;
  }

  .hero {
    min-height: auto;
    padding: 120px 0 80px;
  }

  .hero-title {
    font-size: 1.8rem;
  }

  .hero-lead {
    font-size: 1rem;
  }

  .section {
    padding: 56px 0;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .top-about-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .top-about-image img {
    height: 280px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

  .about-hero {
    padding: 120px 0 56px;
  }

  .about-hero-title {
    font-size: 1.6rem;
  }

  .lead-block {
    padding: 32px 24px;
  }

  .numbered-list li {
    padding-left: 48px;
  }

  .vision-box {
    padding: 32px 24px;
  }

  .closing-message {
    padding: 32px 24px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero-title {
    font-size: 1.5rem;
  }

  .card {
    padding: 24px;
  }
}