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

html{
  scroll-behavior:smooth;
}

body{
  font-family:"Raleway", sans-serif;
  font-weight:300;
  min-height:100vh;
  color:#fff;
  overflow-x:hidden;
}

/* Vollbild-Video im Hintergrund */
.bg-video{
  position:fixed;
  top:0;
  left:0;
  width:100%;
  height:100%;
  object-fit:cover;
  z-index:-2;
}

/* Leichte Abdunklung über dem Video */
body::before{
  content:"";
  position:fixed;
  inset:0;
  background:rgba(0,0,0,.12);
  z-index:-1;
}

/* Schmales vertikales Overlay-Band */
.overlay-column{
  width:min(72vw, 720px);
  min-height:100vh;
  margin:0 auto;
  background:rgba(0,0,0,.40);
  padding:6rem 3rem 3rem 3rem;
  position:relative;
}

/* Abschnitte */
.panel{
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding:2rem 0;
}

/* Innenbereich */
.content-wrapper{
  width:100%;
  max-width:620px;
  margin:0 auto;
}

/* Schrift explizit weiss */
h1, h2, h3, p, a{
  color:#fff;
}

h1{
  font-size:clamp(2rem, 4vw, 3.4rem);
  line-height:1.25;
  font-weight:300;
}

h2{
  font-size:clamp(1.5rem, 3vw, 2.2rem);
  line-height:1.3;
  font-weight:400;
  margin:1.5rem 0;
}

h3{
  font-size:clamp(1.1rem, 2vw, 1.5rem);
  line-height:1.5;
  font-weight:300;
}

p{
  font-size:clamp(1rem, 1.8vw, 1.2rem);
  line-height:1.7;
  margin:0.8rem 0;
}

/* Burgerbutton */
.burger{
  position:fixed;
  top:20px;
  left:20px;
  width:30px;
  height:24px;
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  background:transparent;
  border:none;
  cursor:pointer;
  z-index:1002;
}

.burger span{
  display:block;
  width:100%;
  height:3px;
  background:#fff;
  transition:0.3s;
}

/* Navigation */
.nav{
  position:fixed;
  top:0;
  left:-250px;
  width:220px;
  height:100vh;
  padding:80px 20px;
  display:flex;
  flex-direction:column;
  gap:20px;
  background:rgba(0,0,0,0.88);
  transition:left 0.3s;
  z-index:1001;
}

.nav a{
  color:#fff;
  text-decoration:none;
  font-size:1.4rem;
  font-weight:600;
  font-family:"Raleway", sans-serif;
}

.nav a:hover,
.nav a:focus{
  color:#ffd700;
}

.nav.active{
  left:0;
}

/* Burger zu X */
.burger.active span:nth-child(1){
  transform:translateY(10.5px) rotate(45deg);
}

.burger.active span:nth-child(2){
  opacity:0;
}

.burger.active span:nth-child(3){
  transform:translateY(-10.5px) rotate(-45deg);
}

/* Tablet */
@media (max-width: 900px){
  .overlay-column{
    width:min(78vw, 640px);
    padding:6rem 2.5rem 3rem 2.5rem;
  }

  .content-wrapper{
    max-width:560px;
  }
}

/* Mobile */
@media (max-width: 600px){
  .overlay-column{
    width:min(82vw, 460px);
    padding:5.5rem 1.5rem 2.5rem 1.5rem;
  }

  .panel{
    min-height:100vh;
    padding:1.5rem 0;
  }

  .content-wrapper{
    max-width:100%;
  }

  .nav{
    width:200px;
  }
}