/* 基本樣式 */
body {
    background-color: #f8f9fa;
    font-family: "Microsoft JhengHei", "微軟正黑體", "Heiti TC", "黑體", sans-serif;
}

.card {
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
    border: none;
    border-radius: 10px;
}

.card-header {
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
    padding: 15px 20px;
}

.card-body {
    padding: 30px;
}

.btn-primary {
    background-color: #007bff;
    border-color: #007bff;
}

.btn-primary:hover {
    background-color: #0069d9;
    border-color: #0062cc;
}

/* 表單樣式 */
.form-control {
    border-radius: 5px;
    padding: 10px 15px;
    border: 1px solid #ced4da;
}

.form-control:focus {
    border-color: #80bdff;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

/* 登入表單樣式 */
.form-signin {
    width: 100%;
    max-width: 420px;
    padding: 15px;
    margin: auto;
}

/* 成功頁面樣式 */
.success-icon {
    font-size: 5rem;
    color: #28a745;
    margin-bottom: 20px;
}

/* 響應式調整 */
@media (max-width: 768px) {
    .card-body {
        padding: 20px;
    }
}