/* 全体のリセットと基本設定 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Helvetica Neue', 'Arial', sans-serif;
    background: linear-gradient(135deg,rgb(181, 234, 224), #ccc);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

/* ログインコンテナ */
.login-container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 40px 30px;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 400px;
    text-align: center;
    animation: fadeIn 1s ease-in-out;
}

/* 見出し */
.login-container h1 {
    margin-bottom: 30px;
    color: #333;
    font-size: 32px;
    font-weight: bold;
}

/* 入力フィールド */
.login-container input[type="text"],
.login-container input[type="password"] {
    width: 100%;
    padding: 14px 12px;
    margin-bottom: 20px;
    border: 1px solid #ccc;
    border-radius: 12px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.login-container input[type="text"]:focus,
.login-container input[type="password"]:focus {
    border-color: #4A90E2;
    outline: none;
}

/* ログインボタン */
.login-container button {
    width: 100%;
    padding: 14px 0;
    background: linear-gradient(135deg, #4A90E2, #007aff);
    border: none;
    border-radius: 12px;
    color: white;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s;
}

.login-container button:hover {
    background: linear-gradient(135deg, #357ABD, #0051cc);
}

/* 新規登録ボタン */
.register-btn {
    display: inline-block;
    margin-top: 20px;
    color: #4A90E2;
    font-weight: bold;
    text-decoration: none;
    font-size: 16px;
    transition: color 0.3s;
}

.register-btn:hover {
    color: #357ABD;
    text-decoration: underline;
}

/* レスポンシブ対応 */
@media (max-width: 480px) {
    .login-container {
        padding: 30px 20px;
    }

    .login-container h1 {
        font-size: 26px;
    }
}