html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
}

.header {
    background-color: lightblue;
    color: white;
    text-align: center;
    padding: 20px;
    border: 2px solid white;
}

.menubar {
    background-color: lightblue;
    padding: 10px;
    text-align: center;
    border: 2px solid white;
}

.menubar a {
    color: white;
    margin: 0 15px;
    text-decoration: none;
}

.menubar a:hover {
    text-decoration: underline;
}

.main {
    display: flex;
    flex-direction: row-reverse; 
    min-height: 400px;   
}

.sidemenu {
    width: 15%;
    background-color: lightblue;
    color: white;
    padding: 20px;        
    text-align: center;
    border: 2px solid white;
}
.content {
    width: 85%;
    padding: 50px;
    background-color: None; 
    border: 2px solid white;
}

.content1 {
    background-color: rgb(104, 242, 237);
    padding: 80px;
    margin-bottom: 15px;
    text-align: center;
    border: 2px solid lightpink;
    border-radius: 10%
}

.content2 {
    background-color:rgb(104, 242, 237);
    padding: 80px;
    text-align: center;
    border: 2px solid white;
    border-radius: 10%

}

.footer {
    background-color: lightblue;
    color: white;
    text-align: center;
    padding: 20px;
    border: 2px solid white;
    min-height: 250px;

}

input, button {
    padding: 5px;
    margin: 5px;
}

button {
    cursor: pointer;
}

.activity{
display:none;
}

#a1{
display:block;
}

.activity{
display:none;
background: pink;
padding:20px;
border-radius:10px;
box-shadow:0 0 10px rgba(0,0,0,0.1);
}

.profile{
display:flex;
align-items:center;
justify-content:center;
gap:20px;
}

.profile-pic{
width:100px;
height:100px;
border-radius:50%;
border:3px solid white;
object-fit:cover;
}

.profile-info h1{
margin:0;
}

.profile-info p{
margin:0;
font-size:14px;
}

/* ===== YELLOW MODE (Activity 8) ===== */
.yellow-mode .header,
.yellow-mode .menubar,
.yellow-mode .sidemenu,
.yellow-mode .content,
.yellow-mode .footer {
    background-color: violet;
    color: black;
}

/* ===== DARK MODE (Activity 9) ===== */
.dark-mode .header,
.dark-mode .menubar,
.dark-mode .sidemenu,
.dark-mode .content,
.dark-mode .footer {
    background-color: #222;
    color: white;
}