/* ========================
   ベーススタイル
========================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  font-family: 'Poppins', 'Noto Sans JP', sans-serif;
  background-color: #f6f9ff;
  color: #333;
  display: flex;
  flex-direction: column;
  padding: 0 20px;
  min-width: 320px;
  width: 100%;
  line-height: 1.6;
}

/* ========================
   ヘッダー
========================= */
.header {
  background-color: #fff;
  text-align: center;
  padding: 40px 20px;
}

.logo img {
  max-width: 90px;
  margin-bottom: 10px;
}

.main-title {
  font-size: 2.8rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: #333;
  background-color: #D4FF00;
  margin-top: 10px;
}

.catchphrase {
  font-size: 1.2rem;
  font-weight: 400;
  margin-top: 20px;
  color: #000;
  padding: 5px;
  border-radius: 5px;
}

/* ========================
   ヒーローセクション
========================= */
.hero-section {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 60px;
  position: relative;
  width: 100%;
}

.hero-post {
  display: flex;
  align-items: center;
  width: 100%;
  position: relative;
}

.hero-image {
  width: 100%;
  border-radius: 12px;
}

.hero-section::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 5%;
  background: linear-gradient(to right, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 1) 100%);
  pointer-events: none;
}

.hero-text {
  flex: 1;
  padding: 20px;
  color: #333;
  font-size: 1.2em;
  border-radius: 12px;
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 45%;
  z-index: 1;
}

.hero-text h1 {
  font-size: 2em;
}

.hero-text p {
  font-size: 1.1em;
  margin: 20px 0;
}

.hero-text .btn {
  background-color: #FFFB00;
  color: #333;
  padding: 10px 20px;
  border-radius: 20px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease;
}

.hero-text .btn:hover {
  background-color: #d8d800;
  color: #fff;
}

/* ========================
   投稿カード・スライダー
========================= */
.dynamic-content {
  margin-top: 60px;
  width: 100%;
}

.content-slider {
  display: flex;
  flex-direction: column;
  align-items: center;   /* 子要素（post）を中央に寄せる */
  justify-content: center;
  gap: 20px;
  padding: 15px;
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
}


.content-slider::-webkit-scrollbar {
  height: 8px;
}

.content-slider::-webkit-scrollbar-thumb {
  background-color: #D4FF00;
  border-radius: 10px;
}

.content-slider::-webkit-scrollbar-thumb:hover {
  background-color: #C4FF00;
}

.post {
  width: 100%;
  max-width: 600px;
  margin: 0 auto;  /* 念のため中央寄せ */
  background: #fff;
  border-radius: 12px;
  padding: 20px;
  box-sizing: border-box;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}


.post:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
}

.post-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 8px;
}

.read-more {
  display: inline-block;
  margin-top: 15px;
  padding: 14px 35px;
  background-color: #D4FF00;
  color: #565656;
  text-decoration: none;
  border-radius: 50px;
  border: 1px solid #333;
  transition: background 0.3s, transform 0.3s, box-shadow 0.3s;
  font-weight: 600;
  letter-spacing: 1px;
}

.read-more:hover {
  background-color: #C4FF00;
  transform: scale(1.05);
}

/* ========================
   モーダル
========================= */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(5px);
  padding: 20px;
}

.modal.show {
  display: flex;
  opacity: 1;
}

.modal-content {
  background-color: #fff;
  margin: 2% auto 0;
  padding: 20px;
  border-radius: 10px;
  width: 90%;
  max-width: 600px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  font-family: 'Noto Sans JP', sans-serif;
  color: #333;
  animation: fadeIn 0.3s ease-in-out;
}

.modal-content h2 {
  font-size: 1.8rem;
  margin-bottom: 15px;
  color: #222;
  border-bottom: 2px solid #ccc;
  padding-bottom: 10px;
}

.modal-content p {
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 15px;
}

.modal-image,
.modal-content img {
  width: 100%;
  height: auto;
  border-radius: 8px;
}

.close-btn {
  position: absolute;
  top: 10px;
  right: 40px;
  font-size: 1.5rem;
  font-weight: bold;
  color: #666;
  cursor: pointer;
  transition: color 0.3s ease;
}

.close-btn:hover {
  color: #D4FF00;
}

/* ========================
   フッター
========================= */
.footer {
  background-color: #fff;
  color: #333;
  text-align: center;
  padding: 20px;
  margin-top: 60px;
  border-top: 2px solid #ddd;
  font-size: 0.9em;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.footer .social-links {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-bottom: 15px;
}

.footer .social-links a {
  color: #333;
  text-decoration: none;
  font-size: 1em;
  transition: color 0.3s ease;
}

.footer .social-links a:hover {
  color: #D4FF00;
}

.footer p {
  margin-top: 10px;
}

/* ========================
   レスポンシブ対応
========================= */
@media (max-width: 768px) {
  html {
    font-size: 15px;
  }

  .hero-text {
    position: static;
    transform: none;
    width: 100%;
    text-align: center;
    background-color: rgba(255, 255, 255, 0.8);
    margin-top: 20px;
  }

  .post {
    width: 100%;
  }

  .content-slider {
    gap: 15px;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }

  body {
    padding: 0 10px;
  }

  .main-title {
    font-size: 2rem;
  }

  .catchphrase {
    font-size: 1rem;
  }

  .modal-content {
    width: 95%;
  }

  .content-slider {
    flex-wrap: wrap;
    justify-content: center;
  }

  .post {
    width: 90%;
  }
}

/* ========================
   スクロールバー共通
========================= */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: #e0e0e0;
}

::-webkit-scrollbar-thumb {
  background: #D4FF00;
}

::-webkit-scrollbar-thumb:hover {
  background: #C4FF00;
}

/* ========================
   アニメーション
========================= */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}