/* BODY & SCROLL */
body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg,#0a0f1c,#1e1e2f);
    color: #fff;
}
html { scroll-behavior: smooth; }

/* HERO */
.hero {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.banner {
    width: 80%;
    max-width: 700px;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0,255,200,0.3);
    margin-bottom: 20px;
    transition: transform 0.3s ease;
}
.banner:hover { transform: scale(1.03); }
.btn {
    padding: 15px 40px;
    background: linear-gradient(90deg,#1e90ff,#00ffc8);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
}
.btn:hover {
    transform: translateY(-3px);
    background: linear-gradient(90deg,orange,#1e90ff);
    box-shadow:0 8px 20px rgba(0,255,200,0.5);
}

/* LOADER + COMPTE À REBOURS */
.loader {
    display: none;
    margin: 20px;
    border: 8px solid rgba(255,255,255,0.2);
    border-top: 8px solid #00ffc8;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    animation: spin 1s linear infinite;
}
@keyframes spin { 0%{transform:rotate(0deg);} 100%{transform:rotate(360deg);} }

.countdown {
    margin-top:10px;
    font-size:20px;
    color:#00ffc8;
    font-weight:bold;
}

/* HEADER */
header { text-align:center; padding:40px; background:#111827; box-shadow:0 4px 20px rgba(0,0,0,0.5);}
header h1 { font-size:42px; color:#00ffc8; margin-bottom:10px;}
header p { font-size:18px; color:#a0f0d8;}

/* NAVIGATION */
nav ul { display:flex; list-style:none; justify-content:center; gap:20px; padding:0; margin-top:20px; }
nav a { text-decoration:none; color:#00ffcc; font-weight:bold; padding:8px 12px; border-radius:5px; transition:all 0.3s ease; }
nav a:hover { color:#ffcc00; background: rgba(255,255,255,0.05); }

/* SECTIONS */
.card { background:#1e1e2f; padding:25px; margin:25px auto; border-radius:15px; box-shadow:0 8px 25px rgba(0,255,200,0.2); max-width:900px; transition:transform 0.3s ease, box-shadow 0.3s ease;}
.card:hover { transform: translateY(-5px); box-shadow:0 12px 30px rgba(0,255,200,0.4);}
./* Titre des sections */
.card h2 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 20px;
    color: white;        /* couleur par défaut */
    cursor: pointer;
    transition: color 0.3s;
}

/* au survol */
.card h2:hover { color:#ffcc00; background: rgba(255,255,255,0.05); }
.card h2 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 20px;
    color: white;      /* texte blanc par défaut */
    cursor: pointer;   /* indique que c'est cliquable */
    transition: color 0.3s;
}
.card h3 { color:#a0f0d8; margin-top:10px;}
ul { padding-left:20px;}
li { margin-bottom:10px;}

/* SELECT */
select { width:100%; max-width:400px; padding:10px 15px; margin-bottom:20px; border-radius:10px; border:2px solid #00ffc8; background-color:#111827; color:white; font-size:16px; cursor:pointer; transition:all 0.3s ease;}
select:hover { border-color:#00ff99; background-color:#1f2937; }
select:focus { outline:none; border-color:#00ffcc; box-shadow:0 0 10px #00ffcc;}

/* BOUTON CV */
.btn-cv { display:inline-block; padding:12px 25px; background: linear-gradient(90deg,#1e90ff,#00ffc8); color:white; text-decoration:none; border-radius:8px; font-weight:bold; transition: all 0.3s ease;}
.btn-cv:hover { transform: translateY(-3px); box-shadow:0 8px 15px rgba(0,255,200,0.4); background: linear-gradient(90deg,#00ffc8,#1e90ff);}

/* FOOTER */
footer { text-align:center; padding:25px; margin-top:30px; background:#111827; color:#a0f0d8; box-shadow:0 -4px 10px rgba(0,0,0,0.3);}