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

body{
    background:#0b0b0b;
    color:#f2f2f2;
    font-family:Arial,sans-serif;
    line-height:1.7;
    overflow-x:hidden;
    text-align:center;
	padding: 5%;
}

/* HEADER */

header{
    position:relative;
    top:0;
    width:100%;
    z-index:1000;
    background:rgba(0,0,0,0.85);
    backdrop-filter:blur(8px);
    padding:20px 40px;
}

nav{
    display:flex;
    justify-content:center;
    gap:30px;
    flex-wrap:wrap;
}

nav a{
    color:#e8e8e8;
    text-decoration:none;
    letter-spacing:2px;
    transition:0.3s;
    font-size:0.95em;
}

nav a:hover{
    color:white;
}

/* HERO */

.hero{
    height:100vh;
    background:
    linear-gradient(rgba(0,0,0,0.65),rgba(0,0,0,0.8)),
    url("images/hero.jpg") center/cover no-repeat;
    display:flex;
    align-items:center;
    justify-content:center;
    text-align:center;
    padding:40px;
}

.hero-content{
    max-width:900px;
}

.hero h1{
    font-size:5em;
    letter-spacing:6px;
    text-transform:uppercase;
    margin-bottom:30px;
}

.hero p{
    font-size:1.3em;
    color:#ddd;
}

.button{
    display:inline-block;
    margin-top:40px;
    padding:14px 35px;
    border:1px solid white;
    color:white;
    text-decoration:none;
    transition:0.4s;
}

.button:hover{
    background:white;
    color:black;
}

/* SECTIONS */

.section{
    padding:120px 5%;
}

.section-title{
    font-size:3em;
    margin-bottom:50px;
    text-transform:uppercase;
    letter-spacing:4px;
    text-align:center;
}

/* GRID */

.grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(320px,1fr));
    gap:40px;
}

.card{
    background:#111;
    border-radius:10px;
    overflow:hidden;
    transition:0.5s;
}

.card:hover{
    transform:translateY(-8px);
}

.card img{
    width:100%;
    aspect-ratio:4/3;
    object-fit:cover;
    border-radius:10px;
    transition:0.5s;
}

.card:hover img{
    transform:scale(1.05);
    opacity:0.8;
}

.card-content{
    padding:25px;
}

.card-content h3{
    margin-bottom:15px;
    font-size:1.7em;
}

.card-content p{
    color:#ccc;
}

a.back {
  display: inline-block;
  margin: 20px;
  padding: 10px 15px;
  background: white;
  text-decoration: none;
  font-weight: bold;
  color: #333;
  border: 1px solid #000;
  margin-top: 60px;
}

/* VIDEO PLEINE LARGEUR */

.video-container{
    position:relative;
    width:100%;
    max-width:1400px;
    margin:40px auto;
    padding-bottom:56.25%;
    height:0;
    overflow:hidden;
}

.video-container iframe{
    position:absolute;
    top:0;
    left:0;
    width:100%;
    height:100%;
    border:none;
}

/* FOOTER */

footer{
    text-align:center;
    padding:60px 20px;
    background:black;
    color:#777;
}

/* MOBILE */

@media(max-width:768px){

body{
    padding:0;
}

header{
    padding:12px 10px;
}

nav{
    gap:10px;
}

nav a{
    font-size:0.85em;
    letter-spacing:1px;
}

.hero{
    min-height:80vh;
    height:auto;
    padding:60px 20px;
}

.hero h1{
    font-size:2.1em;
    letter-spacing:2px;
    line-height:1.2;
}

.hero p{
    font-size:1em;
}

.button{
    display:block;
    width:90%;
    max-width:300px;
    margin:20px auto 0 auto;
    padding:12px 20px;
}

.section-title{
    font-size:1.8em;
    letter-spacing:2px;
    margin:40px 15px 25px;
}

.grid{
    grid-template-columns:1fr;
    gap:25px;
    padding:0 15px;
}

.card-content h3{
    font-size:1.4em;
}

footer{
    padding:40px 15px;
}

.section{
    padding:30px 0;
}

.video-container{
    width:100vw;
    margin-left:50%;
    transform:translateX(-50%);
    border-radius:0;
}

}