/*=======================
  ヘッダー
==========================*/

main {
  margin-top: 80px;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: #f7fff6;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  z-index: 1000;
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ロゴスタイル */
.logo-container {
  display: flex;
  align-items: center;
  margin-right: 20px;
}

header .logo {
  height: 60px;
  margin-right: 10px;
}

/* ナビゲーションスタイル */
.main-nav ul {
  display: flex;
  list-style: none;
  flex-wrap: nowrap;
}

.main-nav li {
  margin: 0 15px;
  position: relative;
  white-space: nowrap;
  padding-top: 10px;
}

.main-nav li:last-of-type {
  padding-top: 4px;
}

.main-nav p,
.main-nav a {
  color: #333;
  display: flex;
  flex-direction: column;
  transition: color 0.3s;
  padding-bottom: 5px;
  align-items: center;
  position: relative;
}

.main-nav a {
  text-decoration: none;
}

.main-nav p {
  line-height: 1;
}
/* レスポンシブデザイン */

.main-nav a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: #4a8c3f;
  transition: width 0.3s ease;
}

.main-nav a:hover {
  color: #4a8c3f; /* 大和合金の緑色 */
}

.main-nav a:hover::after {
  width: 100%;
}

.main-nav span {
  font-size: 0.8rem;
  color: #999;
}

/* サブメニュースタイル */
.submenu-container {
  position: absolute;
  top: 100%;
  left: 0;
  transform: translateY(10px);
  width: 300px;
  background-color: #f7fff6;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 1001;
  padding: 10px 0;
}

.main-nav li:hover .submenu-container {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.submenu {
  display: flex;
  flex-direction: column;
  list-style: none;
  width: 100%;
}

.submenu li {
  margin: 0;
  width: 100%;
}

.submenu a {
  padding: 8px 20px;
  display: block;
  text-align: left;
  align-items: flex-start;
  white-space: nowrap;
  font-size: 14px;
  color: #333;
}

.submenu a:hover {
  color: #4a8c3f;
  background-color: rgba(74, 140, 63, 0.05);
}

.submenu a::after {
  display: none;
}

.submenu a:hover::after {
  width: 0;
}

/* 現在のページを示すスタイル */
.main-nav li.active > a {
  color: #4a8c3f;
}

.main-nav li.active > a::after {
  width: 100%;
}

/* 現在のサブメニュー項目を示すスタイル */
.submenu li.active a {
  color: #4a8c3f;
  background-color: rgba(74, 140, 63, 0.05);
}

.submenu li.active a::after {
  width: 0;
}

/* お問い合わせボタン */
.main-nav li .contact-button {
  margin: 0;
  width: 100%;
  text-align: center;
}

.contact-button a {
  display: inline-block;
  background-color: #fff;
  color: #4a8c3f;
  border: 2px solid #4a8c3f;
  border-radius: 30px;
  padding: 8px 20px;
  text-decoration: none;
  font-weight: bold;
  transition: all 0.3s;
  width: auto;
}

.contact-button a::after,
.main-nav li .contact-button a::after {
  display: none !important;
  width: 0 !important;
  height: 0 !important;
}

.contact-button a:hover {
  background-color: #4a8c3f;
  color: #fff;
}

.contact-button a:hover::after {
  width: 0 !important;
}

/* ハンバーガーメニュー */
.hamburger {
  display: none;
  cursor: pointer;
  width: 30px;
  height: 20px;
  position: relative;
  z-index: 1002;
}

.hamburger span {
  display: block;
  position: absolute;
  height: 3px;
  width: 100%;
  background: #4a8c3f;
  border-radius: 3px;
  opacity: 1;
  left: 0;
  transform: rotate(0deg);
  transition: 0.25s ease-in-out;
}

.hamburger span:nth-child(1) {
  top: 0px;
}

.hamburger span:nth-child(2),
.hamburger span:nth-child(3) {
  top: 8px;
}

.hamburger span:nth-child(4) {
  top: 16px;
}

.hamburger.open span:nth-child(1) {
  top: 8px;
  width: 0%;
  left: 50%;
}

.hamburger.open span:nth-child(2) {
  transform: rotate(45deg);
}

.hamburger.open span:nth-child(3) {
  transform: rotate(-45deg);
}

.hamburger.open span:nth-child(4) {
  top: 8px;
  width: 0%;
  left: 50%;
}

/* メインコンテンツ */
.overlay {
  display: none;
}

/*=======================
  レスポンシブ
==========================*/
@media (max-width: 1200px) {
  main {
    margin-top: 65px;
  }

  header .logo {
    height: 40px;
  }

  .main-nav p,
  .main-nav a {
    font-size: 0.9rem;
  }
}

@media (max-width: 1024px) {
  main {
    margin-top: 60px;
  }

  .main-nav p {
    align-items: start;
    display: block;
  }

  .main-nav p,
  .main-nav a {
    font-size: 1.6rem;
  }

  .header-container {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding: 10px 15px;
  }

  .logo-container {
    margin-right: 0; /* タブレットサイズでは余白をなくす */
  }

  .hamburger {
    display: block;
  }

  .main-nav {
    position: fixed;
    top: 0;
    right: -620px;
    width: 480px;
    height: 100vh;
    background-color: #f7fff6;
    transition: right 0.3s ease;
    z-index: 1001;
    overflow-y: auto;
    padding-top: 60px;
  }

  .main-nav.open {
    right: 0;
  }

  .main-nav ul {
    flex-direction: column;
    align-items: flex-start;
    padding: 0 40px;
    margin-top: 0;
    flex-wrap: wrap; /* タブレットサイズでは必要に応じて折り返し可能に */
  }

  .main-nav li {
    margin: 10px 0;
    width: 100%;
    white-space: normal; /* タブレットサイズでは改行を許可 */
  }

  .main-nav > ul > li {
    border-top: 1px dotted #4a8c3f;
    padding-top: 20px;
    padding-left: 10px;
  }

  .main-nav a:not(.contact-button a):before {
    content: "";
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 6px 0 6px 8px;
    border-color: transparent transparent transparent #4a8c3f;
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    margin: auto;
  }

  .main-nav a {
    padding: 5px 0 5px 20px;
    display: block;
    width: 100%;
  }

  .main-nav span {
    margin-left: 10px;
  }

  .main-nav .submenu-container ul {
    padding: 0 30px;
  }

  .submenu-container {
    position: static;
    width: 100%;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    padding: 10px 0;
  }

  .submenu {
    flex-direction: column;
    align-items: flex-start;
  }

  .submenu li {
    margin: 2px 0;
    width: 100%;
  }

  .main-nav li:hover .submenu-container {
    display: block;
  }

  .main-nav li .contact-button {
    margin-top: 10px;
    width: 100%;
    text-align: center;
  }

  ul.submenu a {
    font-size: 1.1rem;
  }

  .contact-button a {
    padding: 15px;
    width: 80%;
    margin: 40px auto;
  }

  .overlay {
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease;
  }

  .overlay.open {
    opacity: 1;
    visibility: visible;
  }
}

@media (max-width: 620px) {
  main {
    margin-top: 50px;
  }

  .header-container {
    padding: 5px 10px; /* 左右のパディングを調整 */
  }
  .main-nav {
    width: 100%;
  }
  .main-nav ul {
    padding: 0 16px;
  }

  .main-nav .submenu-container ul {
    padding: 0 8px;
  }

  ul.submenu a {
    font-size: 1rem;
  }

  .main-nav a:not(.contact-button a):before {
    border-width: 4px 0 4px 5px;
  }
  .main-nav > ul > li {
    padding-top: 15px;
  }

  .main-nav a {
    padding: 5px 0 5px 14px;
  }

  .contact-button a {
    padding: 12px;
    font-size: 1.4rem;
    margin: 30px auto 100px auto;
  }
}