/* --- 全局設定 --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: "Microsoft JhengHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
}

body {
    background-color: #f0f2f5;
    min-height: 100vh;
    /* 調整上邊距，讓小卡片在畫面中更置中一些 */
    padding-top: 30px;
    padding-bottom: 40px;
    padding-left: 20px;
    padding-right: 20px;
}

/* --- 卡片主體 (變小核心) --- */
.login-card {
    background-color: #ffffff;
    width: 100%;
    margin: 0 auto;
    /* [修改] 寬度從 600px 改為 420px，看起來更精緻 */
    max-width: 420px;
    /* [修改] 內距從 60px 70px 改為 40px，減少留白 */
    padding: 40px;
    border-radius: 20px; /* 圓角稍微縮小一點以配合尺寸 */
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

/* --- 標題區域 --- */
.header {
    display: flex;
    justify-content: center;
    align-items: center;
   /* margin-bottom: 30px; *//* [修改] 間距縮小 */
    gap: 15px;
}

.logo svg {
    /* [修改] Logo 變小 */
    width: 60px;
    height: 60px;
}

.header h1 {
    color: #3c4043;
    /* [修改] 字體變小 */
    font-size: 28px;
    font-weight: bold;
    letter-spacing: 2px;
}

/* --- 錯誤訊息 --- */
.alert-error {
    color: #d93025;
    background-color: #fce8e6;
    padding: 10px;
    border-radius: 8px;
    margin-bottom: 20px;
    text-align: center;
    font-size: 14px;
    border: 1px solid #fad2cf;
}

/* --- 表單區域 --- */
.form-group {
    margin-bottom: 20px; /* [修改] 間距縮小 */
}

    .form-group label {
        display: block;
        margin-bottom: 8px;
        color: #3c4043;
        font-size: 15px; /* [修改] 字體微調 */
        font-weight: 600;
    }

.form-input {
    width: 100%;
    /* [修改] 輸入框高度變矮，Padding 縮小 */
    padding: 12px 16px;
    background-color: #f0f2f5;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    color: #333;
    outline: none;
    transition: background-color 0.2s;
}

    .form-input::placeholder {
        color: #b0b0b0;
        font-size: 14px;
    }

    .form-input:focus {
        background-color: #e4e6e9;
    }

/* --- 按鈕 --- */
.submit-btn {
    width: 100%;
    /* [修改] 按鈕變矮 */
    padding: 12px;
    background-color: #006eb3;
    color: white;
    border: none;
    border-radius: 50px;
    font-size: 18px; /* [修改] 字體微調 */
    font-weight: bold;
    letter-spacing: 1px;
    cursor: pointer;
    margin-top: 10px;
    transition: background-color 0.2s;
    display: flex;
    justify-content: center;
    align-items: center;
}

    .submit-btn:hover {
        background-color: #005a91;
    }

    .submit-btn:disabled {
        background-color: #9ac2dc;
        cursor: not-allowed;
    }

/* --- 底部連結 --- */
.footer-links {
    margin-top: 30px;
    display: flex;
    justify-content: center;
    gap: 20px;
}

    .footer-links a {
        color: #006eb3;
        text-decoration: none;
        font-size: 14px; /* [修改] 字體微調 */
        transition: opacity 0.2s;
    }

        .footer-links a:hover {
            opacity: 0.8;
        }

.spinner {
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top: 2px solid #fff;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
    margin-right: 10px;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}
.fixed-footer {
    position: fixed; /* 固定定位 */
    left: 0;
    bottom: 0;
    width: 100%;
    text-align: center;
    padding: 15px 0;
    background-color: transparent; /* 若需要背景色可改為 #ffffff */
    color: #888; /* 文字顏色，建議用淺灰 */
    font-size: 0.85rem;
    z-index: 1000; /* 確保在最上層 */
}

/* 避免 Footer 遮擋住登入卡片 (如果螢幕很小) */
@media (max-height: 600px) {
    .fixed-footer {
        position: relative; /* 螢幕太矮時取消固定，避免蓋住按鈕 */
        margin-top: 20px;
    }
}