*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
}

html, body{
    height: 100%;
    width: 100%;
    overflow-x: hidden;
}
body{
    padding: 0px 100px 10px 160px; 
}

.nav{
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 160px;
    background: linear-gradient(180deg, rgb(47, 28, 28) 0%, rgb(156, 112, 35) 45%, rgb(156, 112, 35) 100%);
    display: flex;
    align-items: flex-start; 
    justify-content: center;
    z-index: 9999;
    transition: width .25s ease;
}
.nav ul{
    list-style: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start; 
    gap: 30px;
    padding: 36px 0; 
    width: 100%;
}
.nav li{
    display:flex;
    align-items:center;
    justify-content:center;
    width: auto;
    height: auto;
    padding: 2px 8px;
    gap: 12px;
}
.nav li:hover{ 
    transform: none;
}
.nav li i{
    color: white;
    font-size: 40px;
    opacity: 0.9;
    transition: opacity .2s ease, transform .2s ease, filter .2s ease, color .2s ease;
    cursor: pointer;
}
.nav li:hover i{
    opacity: 1;
    transform: translateY(-2px) scale(1.08);
}


.nav .label{
    opacity: 0;
    width: 0;
    white-space: nowrap;
    overflow: hidden;
    color: rgba(255,255,255,0.92);
    font-weight: 600;
    font-size: 16px;
    line-height: 1;
    letter-spacing: 0.2px;
    margin-left: 4px;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(0,0,0,0.25);
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    transition: opacity .2s ease .05s, width .25s ease, color .2s ease, background .2s ease, box-shadow .2s ease;
}

.nav:hover{
    width: 260px;
}
.nav:hover .label{
    opacity: 1;
    width: auto;
    color: white;
}
.nav li:hover .label{
    background: rgba(0,0,0,0.35);
    box-shadow: 0 4px 12px rgba(0,0,0,0.25);
}body{
    transition: padding-left .25s ease;
}
body.nav-expanded{
    padding-left: 260px;
}

.nav li:active i,
.nav li:focus-within i{
    transform: translateY(0) scale(0.98);
}

.header{
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 12px 40px 80px 80px;
}
.header section{
    max-width: 780px;
    background: rgba(54, 53, 53, 0.376);
    padding: 32px 40px;
    border-radius: 16px;
    box-shadow: 0 6px 24px black;
}
.header h1{
    color: white;
    font-size: 52px;
    line-height: 1.15;
}
.header h2{
    color: orange;
    font-size: 44px;
    line-height: 1.15;
}
.header p{
    color: white;
    margin-top: 10px;
}
.buttons{
    display: flex;
    gap: 16px;
    margin-top: 22px;
}
.ontdek{
    background:orange;
    color:white;
    border:0;
    padding:12px 22px;
    border-radius: 10px;
    cursor:pointer;
}
.demo{
    background: black;
    color:white;
    border:1px solid gray;
    padding:12px 22px;
    border-radius: 10px;
    cursor:pointer;
}
.ontdek:hover{
    background:orange;
}
.demo:hover{
    background: black;
}

main{
    position: relative;
    z-index: 10;
}

.video-background{
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    overflow: hidden;
}
.video-background iframe{
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100vw;            
    height: 56.25vw;         
    transform: translate(-50%, -50%);
    min-width: 100%;
    min-height: 100%;
    border: 0;
    pointer-events: none;
}

@media (max-aspect-ratio: 16/9){
    .video-background iframe{
        width: 177.78vh;  
        height: 100vh;
    }
}