/* 1. 全体ベーススタイル設定 */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
    background-color: #f4f7f6;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

/* 2. ログインカード */
.login-card {
    background-color: #ffffff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    width: 100%;
    max-width: 400px;
}

.login-card h2 {
    text-align: center;
    margin-bottom: 24px;
    color: #333333;
    font-size: 24px;
}

/* 3. 入力フォーム */
.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    color: #666666;
    font-size: 14px;
}

.input-group input[type="text"],
.input-group input[type="password"] {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    background-color: #f9f9f9;
    transition: all 0.3s ease;
}

/* フォーカス時のエフェクト */
.input-group input:focus {
    outline: none;
    border-color: #0066cc;
    background-color: #ffffff;
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

/* 4. オプションエリア */
.options-group {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    font-size: 14px;
}

.remember-me {
    display: flex;
    align-items: center;
    cursor: pointer;
    color: #555555;
    user-select: none;
}

.remember-me input {
    margin-right: 8px;
    width: 16px;
    height: 16px;
    accent-color: #0066cc;
    cursor: pointer;
}

.forgot-password {
    color: #0066cc;
    text-decoration: none;
}

.forgot-password:hover {
    text-decoration: underline;
}

/* 5. ログインボタン */
.login-btn {
    width: 100%;
    padding: 14px;
    background-color: #0066cc;
    color: #ffffff;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.login-btn:hover {
    background-color: #0052a3;
}

/* 6. アカウント作成へのリンク */
.signup-link {
    text-align: center;
    margin-top: 24px;
    font-size: 14px;
    color: #666666;
}

.signup-link a {
    color: #0066cc;
    text-decoration: none;
    font-weight: bold;
}

.signup-link a:hover {
    text-decoration: underline;
}