@charset "UTF-8";

/* ==========================================
   共通ベース設定
========================================== */
body {
	margin: 0;
	font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
	background-color: #f8fafc;
	color: dimgray;
	min-height: 100vh;
	display: flex;
	justify-content: center;
	align-items: center;
	padding: 16px;
	box-sizing: border-box;
}

/* ==========================================
	ログインカード
========================================== */
.login-form {
	background: white;
	width: 100%;
	max-width: 380px;
	padding: 2.5rem 2rem;
	border-radius: 16px;
	border: 1px solid #e2e8f0;
	box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.04),
		0 8px 10px -6px rgba(0, 0, 0, 0.02);
	box-sizing: border-box; /* パディングによるはみ出しを防止 */
}

#do-login {
	display: flex;
	flex-direction: column;
	gap: 1.25rem;
}

/* 入力欄やボタンを親要素の幅に綺麗に収める設定 */
#do-login div {
	width: 100%;
	box-sizing: border-box;
}

.name-form,
.pass-form {
	width: 100%;
	height: 48px;
	padding: 0 1rem;
	background-color: white;
	border: 1.5px solid #cbd5e1;
	border-radius: 10px;
	outline: none;
	box-sizing: border-box; /* パディングが幅に食い込むのを防ぐ */
	font-size: 1rem;
}

.name-form:focus,
.pass-form:focus {
	border-color: #3b82f6;
	box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
}

.login-submit {
	width: 100%;
	height: 48px;
	margin-top: 0.5rem;
	font-weight: 600;
	color: white;
	background-color: royalblue;
	border: none;
	border-radius: 10px;
	box-sizing: border-box;
	cursor: pointer;
	font-size: 1rem;
}

.login-submit:hover {
	box-shadow: 0 6px 16px rgba(79, 70, 229, 0.35);
}

/* ==========================================
	エラー・ログアウトメッセージ
========================================== */
.validation-message,
.logout-message {
	color: red;
	text-align: center;
	font-size: 0.875rem;
}

/* ==========================================
   スマホ・タブレット向けレスポンシブ対応 (max-width: 992px)
========================================== */
@media screen and (max-width: 992px) {
	body {
		padding: 20px;
	}

	/* 枠の幅を広げる（max-widthを440pxに拡大、widthも92%でゆったりさせる） */
	.login-form {
		width: 92%;
		max-width: 440px;
		padding: 2.5rem 2rem;
		border-radius: 16px;
	}

	#do-login {
		gap: 1.25rem;
	}

	.name-form,
	.pass-form {
		height: 48px;
		font-size: 16px;
	}

	.login-submit {
		height: 48px;
		font-size: 1rem;
	}
}