* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh; 
    background-color: #f4f4f4;
    color: #333;
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('images/IT-photo.jpg') no-repeat center center;
    background-size: cover;
    opacity: 0.1; 
    pointer-events: none;
    z-index: 0;
}

header {
    background-color: #273c75; 
    color: white;
    padding: 20px 10px;
    text-align: center;
    margin-left: 200px; 
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

header h1 {
    margin-bottom: 10px;
    font-size: 2em;
}

header p {
    font-size: 1.1em;
}


nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 200px;
    height: 100vh;
    background-color: #273c75; 
    padding-top: 50px; 
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    z-index: 1000;
    box-shadow: 2px 0 8px rgba(0,0,0,0.2);
}

nav ul {
    list-style: none;
    width: 100%;
    padding-left: 0;
}

nav ul li {
    width: 100%;
}

nav ul li a {
    color: white;
    text-decoration: none;
    padding: 12px 20px;
    display: block;
    transition: background-color 0.3s ease;
    border-radius: 0;
}

nav ul li a:hover,
nav ul li a.active {
    background-color: #1e2a56;
}

main {
    flex: 1;
    margin-left: 200px; 
    padding: 20px;
    max-width: calc(100% - 200px);
}

section {
    background-color: rgba(255, 255, 255, 0.9); 
    margin-bottom: 20px;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

section h2 {
    margin-bottom: 10px;
    color: #273c75;
}

section p {
    margin-bottom: 15px;
}

section ul {
    list-style: disc;
    padding-left: 20px;
}

section ul li {
    margin-bottom: 8px;
}

.button {
    background-color: #273c75;
    color: white;
    padding: 12px 25px;
    text-decoration: none;
    font-weight: bold;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

.button:hover {
    background-color: #1e2a56;
}


footer {
    background-color: #273c75; 
    color: white;
    text-align: center;
    padding: 20px 10px;
    font-size: 0.95em;
    margin-left: 200px; 
    box-shadow: 0 -2px 8px rgba(0,0,0,0.2);
}