/* Basic page style */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #1a1a1a;
    color: #fff;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(20, 20, 20, 0.9);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    transition: top 0.3s;
    z-index: 1000;
}

.navbar.hidden {
    top: -70px; /* hide up-top */
}

.navbar .logo {
    height: 40px;
}

.navbar ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}

.navbar li {
    margin: 0 15px;
}

.navbar a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s;
}

.navbar a:hover {
    color: #ff00008f;
}

.navbar a.active {
    color: #2BB497;
    border-bottom: 2px solid #2BB497;
}

/* For content under navigation */
.page-content {
    margin-top: 80px;
    padding: 20px;
}
.btn {
    display: inline-block;
    background-color: #2BB497;
    color: #000;
    padding: 8px 15px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
}
.btn:hover {
    background-color: #811d1d;
    color: #fff;
}