:root {
    --main-color: #2f5d50;
    --accent-color: #6fa8a8;
    --text-color: #2f3e3e;
}

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

body {
    font-family: 'Poppins', sans-serif;
    background:
        linear-gradient(rgba(255, 255, 255, .85),
        rgba(255, 255, 255, .92)),
        url("../Bilder/berge.jpg") center / cover fixed;
    color: var(--text-color);
}
/* ── HEADER ── */
header {
    text-align: center;
    padding: 40px 20px;
}

header h1 {
    color: var(--main-color);
    font-size: 3rem;
}

h3{
font-size:clamp(3rem,6vw,5rem);
font-weight:800;
letter-spacing:2px;
color: rgb(0, 0, 0);
}



main{
max-width:1400px;
margin:auto;
padding:50px 25px;
}

.intro-section{
background:rgba(255,255,255,.06);
backdrop-filter:blur(16px);
border:1px solid rgba(255,255,255,.08);
padding:40px;
border-radius:24px;
margin-bottom:60px;
line-height:1.9;
box-shadow:0 20px 40px rgba(0,0,0,.25);
}

.intro-section h2,
.gallery h2{
text-align:center;
margin-bottom:25px;
font-size:2rem;
}

.gallery-grid{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(320px,1fr));
gap:28px;
}

.gallery-card,
.media-box{
height:300px;
overflow:hidden;
border-radius:22px;
position:relative;
background:#111;
box-shadow:0 12px 35px rgba(0,0,0,.3);
}

.gallery-card img,
.media-image,
.media-video{
width:100%;
height:100%;
display:block;
object-fit:cover;
object-position:center center;
transition:all .5s ease;
}

.gallery-card:hover img,
.media-box:hover .media-image{
transform:scale(1.08);
}

.gallery-card::after,
.media-box::after{
content:"";
position:absolute;
inset:0;
background:linear-gradient(to top,rgba(0,0,0,.4),transparent);
pointer-events:none;
}

.media-video{
position:absolute;
inset:0;
opacity:0;
}

.media-box:hover .media-video{opacity:1}
.media-box:hover .media-image{opacity:0}

/* ── BACK BUTTON ── */
.back-btn {
    display: inline-block;
    margin: 40px 0;
    padding: 12px 30px;
    border-radius: 30px;
    text-decoration: none;
    color: white;
    background: linear-gradient(135deg, #2f5d50, #5cc6c6, #6fa8a8);
    transition: opacity 0.3s ease;
}

.back-btn:hover {
    opacity: 0.85;
}

.lightbox{
display:none;
position:fixed;
inset:0;
background:rgba(0,0,0,.92);
justify-content:center;
align-items:center;
z-index:9999;
}

.lightbox.open{display:flex}

.lightbox img{
max-width:92%;
max-height:92%;
border-radius:18px;
}

#close{
position:absolute;
top:20px;
right:35px;
font-size:50px;
cursor:pointer;
}

@media(max-width:768px){
.hero{height:40vh}
.gallery-card,.media-box{height:240px}
.intro-section{padding:25px}
}