body {
	background-color: #ecf0f1;
	font-family: Arial, sans-serif;
	display: flex;
	justify-content: center;
	align-items: center;
	height: 100vh;
	margin: 0;
}
.login-container {
	width: 100%;
	max-width: 400px;
}
.login-form {
	background-color: #fff;
	padding: 40px;
	border-radius: 8px;
	box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}
.login-form h2 {
	text-align: center;
	margin-bottom: 30px;
	color: #2c3e50;
}
.form-group {
	margin-bottom: 20px;
}
.form-group label {
	display: block;
	margin-bottom: 5px;
	color: #34495e;
}
.form-group input {
	width: 100%;
	padding: 12px;
	border: 1px solid #bdc3c7;
	border-radius: 5px;
	box-sizing: border-box;
}
.btn-login {
	width: 100%;
	padding: 12px;
	background-color: #3498db;
	color: white;
	border: none;
	border-radius: 5px;
	cursor: pointer;
	font-size: 16px;
	font-weight: bold;
	transition: background-color 0.3s;
}
.btn-login:hover {
	background-color: #2980b9;
}
.error-message {
	background-color: #e74c3c;
	color: white;
	padding: 10px;
	border-radius: 5px;
	text-align: center;
	margin-bottom: 20px;
}
/* Googleサインインボタン用のスタイル */
.google-login-separator {
	display: flex;
	align-items: center;
	text-align: center;
	color: #888;
	margin: 20px 0;
}
/* 線の部分 */
.google-login-separator::before,
.google-login-separator::after {
	content: '';
	flex: 1;
	border-bottom: 1px solid #ddd;
}
/* 「または」の文字の両脇にスペースを設ける */
.google-login-separator:not(:empty)::before {
	margin-right: .5em;
}
.google-login-separator:not(:empty)::after {
	margin-left: .5em;
}
.btn-google-login {
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 15px;
	width: 100%;
	padding: 10px;
	background-color: #ffffff;
	color: #444;
	border: 1px solid #ddd;
	border-radius: 5px;
	cursor: pointer;
	font-size: 15px;
	font-weight: bold;
	text-decoration: none;
	transition: background-color 0.3s, border-color 0.3s;
	box-sizing: border-box;
}
.btn-google-login:hover, .btn-line-login:hover {
	background-color: #f7f7f7;
	border-color: #ccc;
}
.btn-google-login svg {
	width: 20px;
	height: 20px;
}
.btn-line-login {
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 15px;
	width: 100%;
	padding: 10px;
	color: #06C755;
	border: 1px solid #ddd;
	border-radius: 5px;
	cursor: pointer;
	font-size: 15px;
	font-weight: bold;
	text-decoration: none;
	transition: background-color 0.3s;
	box-sizing: border-box;
	margin-top: 10px;
}
.btn-line-login .line-icon {
	width: 22px;
	height: 22px;
}
/* テキスト選択の無効化 */
.btn-login,
.btn-google-login,
.btn-line-login,
label {
	-webkit-user-select: none;
	-moz-user-select: none;
	-ms-user-select: none;
	user-select: none;
}