.header{
    width: 100%;
    height:100vh;
    position: relative;
    background: #00122e;
      }
nav {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    background: #182842;
    width: 120px;
    padding: 10px 0;
}


nav .logo {
    width: 56px;
    display: block;
    margin: auto;
    cursor: pointer;
}

nav ul {
    margin-top: 160px;
}

nav ul li {
    list-style: none;
}

nav ul li img {
    width: 50px;
    display: block;
    margin: 10px auto; 
    padding: 10px;
    border-radius: 10px;
    cursor: pointer;
    opacity: 0.5;
    transition: opacity 0.5s, background 0.5s;
}

nav ul li img:hover {
    opacity: 1;
    background: #4d6181;
}


nav ul li .active {
    opacity: 1;
    background: #4d6181;
}

.container {
    margin-left: 120px;
    padding: 0 2.5%;
}

.top-icons {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: 25px 0;
}

.top-icons img {
    width: 25px;
    margin-left: 40px;
    cursor: pointer;
}

.row {
    margin-top: 15px;
    display: flex;
    justify-content: space-between;
}

.col-1 {
    flex-basis: 65%;
}

.col-2 {
    flex-basis: 33%;
}


.host-img {
    width: 100%;
    border-radius: 15px;
}

.controls {
    display: flex;
    align-items: center;
    justify-content: center;
}

.controls img {
    width: 40px;
    margin: 20px 10px;
    cursor: pointer;
    transition: transform 0.5s;
}



.controls img:hover {
    transform: translateY(-10px);
}

.joined {
    background-color: #182842;
    border-radius: 15px;
    padding: 30px 40px 50px;
    color: #fff;
}

.joined div {
    margin-top: 20px;
    display: grid;
    grid-template-columns: auto auto auto;
    grid-gap: 20px;
}

.joined img {
    width: 100%;
    border-radius: 10px;
    cursor: pointer;
}

.invite {
    background-color: #182842;
    border-radius: 15px;
    padding: 30px 40px 50px;
    color: #fff;
    margin-top: 20px;
}

.invite img {
    margin-top: 20px;
    width: 50px;
    margin-left: 5px;
    border-radius: 50%;
    cursor: pointer;
}
nav ul {
    display: flex;
    flex-direction: column;
    align-items: center; 
    list-style: none;
    margin: 0; 
    padding: 0; 
}