/* Page base */
body {
    font-family: Arial, sans-serif;
    background-color: #eef2f7;
    color: #1f2933; /* default text color */
    margin: 20px;
}

/* Layout sections */
header, main {
    background-color: #ffffff;
    padding: 16px;
    border-radius: 10px;
    border: 1px solid #cfd6e0;
}

/* Header */
header p {
    color: #4b5563;
}

/* Headings */
h1 {
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: #1e3a8a; /* dark blue */
}

h2 {
    color: #0f766e; /* teal */
}

h3 {
    margin-top: 24px;
    color: #374151; /* slate gray */
}

/* Paragraph text */
p {
    line-height: 1.6;
    color: #111827; /* near-black */
}

/* Text formatting tags */
strong {
    color: #7c2d12; /* dark red-brown */
}

em {
    color: #1d4ed8; /* blue */
    font-style: italic;
}

span {
    color: #b91c1c; /* deep red */
    font-weight: bold;
}

small {
    color: #6b7280;
}

/* Lists */
ul, ol {
    padding-left: 25px;
}

li {
    margin: 6px 0;
    color: #1f2933;
}

/* Links */
a {
    color: #2563eb; /* bright blue */
    text-decoration: none;
    font-weight: bold;
}

a:hover {
    color: #1e40af;
    text-decoration: underline;
}

/* Highlight paragraph */
.highlight {
    background-color: #e0f2fe;
    border-left: 5px solid #0284c7;
    padding: 10px;
    color: #0c4a6e;
}

/* Center images using margin auto */
.center-image {
    display: block;
    margin: 20px auto;
    width: 90%;
    max-width: 420px;
    border: 2px solid #1f2933;
    border-radius: 10px;
}

/* Smaller linked image */
.icon {
    max-width: 90px;
    border: none;
}

/* Footer */
footer {
    margin-top: 20px;
    text-align: center;
}

footer small {
    color: #374151;
}