/* 共通レイアウト */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  background-color: #f0f0f0;
}

body {
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  background-color: #fff;
  font-family: "Hiragino Kaku Gothic ProN", "Meiryo", sans-serif;
  line-height: 1.6;
  color: #333;
  height: 100vh; /* 追加 */
  display: flex; /* 追加 */
  flex-direction: column; /* 追加 */
}

h1 {
  margin: 0px;
  padding: 0px;
}

/* ヘッダー */
.site-header {
  padding: 5px 5px;
}

.site-title {
  font-size: 24px;
  margin: 0;
  height: 65px;
}

.site-logo {
  height: 60px;
}

/* ナビゲーション */
.site-nav {
  background: #e0e0e0;
  display: flex;
  align-items: center;
  height: 55px;
}

.site-nav a {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 48px;
  height: 48px;
  margin: 0 3px;
}

.site-nav a img {
  width: 48px;
  height: 48px;
}

.site-nav a.active {
  background: #b5e7b2;
}

.site-nav .left-icon {
  margin-left: auto;
}


/*
.site-nav a:hover {
  background: #444;
}
*/

/* メインコンテンツ */
.site-main {
  flex: 1; /* 修正 */
  overflow-y: auto; /* 追加 */
  padding: 5px;
/* margin: 10px;*/
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 5px;
  background-color: #e6eff7;
/*  border: 1px solid #bfbfbf;*/
/*  margin-bottom: 10px;*/
}

.page-title {
  font-weight: bold;
}

.page-user {
  text-align: right;
}

.login-container {
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.login-button {
  display: inline-block;
  padding: 10px 20px;
  background-color: #4285f4;
  color: #fff;
  border-radius: 4px;
  text-decoration: none;
}

.login-button.disabled {
  pointer-events: none;
  opacity: 0.6;
}


/* フッター */
.site-footer {
  background: #333;
  color: #fff;
  text-align: center;
  padding: 10px;
}

@media (max-width: 768px) {
  .site-nav ul {
    flex-direction: column;
  }
  .site-nav .dropdown-menu {
    position: static;
  }
}