body {
    font-family: 'Poppins', sans-serif;
    background-color: #f0f2f5;
}

.card {
    border-radius: 15px;
    transition: all 0.3s ease-in-out;
}

.card-header {
    border-top-left-radius: 15px;
    border-top-right-radius: 15px;
    background: linear-gradient(45deg, 
        #0d6efd,    /* blue */
        #0dcaf0,    /* cyan */
        #20c997,    /* teal */
        #198754     /* green */
    );
    background-size: 500% 500%; /* slightly larger for smooth movement */
    animation: gradientShift 25s ease infinite; /* slower and smooth */
    color: white;
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.form-label {
    color: #495057;
}

.form-control, .form-select {
    border-radius: 8px;
    padding: 0.75rem 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus, .form-select:focus {
    border-color: #86b7fe;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

/* Style for the simple textarea */
textarea#email-body {
    line-height: 1.6;
    font-size: 0.95rem;
    min-height: 250px;
    resize: none; /* Disables the resize handle */
}

.copy-btn {
    border-top-right-radius: 8px;
    border-bottom-right-radius: 8px;
}

.copy-btn:hover {
    background-color: #000000;
}