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

html, body {
    height: 100%;
}

body {
    background: #000;
    color: white;
    font-family: 'Segoe UI', sans-serif;
    overflow-x: hidden;

    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

/* BACKGROUND ANIMATION */
.background-animation {
    position: fixed;
    width: 250%;
    height: 250%;
    background:
        radial-gradient(circle at 20% 30%, #ff00ff66, transparent 40%),
        radial-gradient(circle at 80% 70%, #00ffff66, transparent 40%),
        radial-gradient(circle at 50% 50%, #ffffff10, transparent 60%);
    animation: moveBg 18s infinite alternate ease-in-out;
    z-index: -1;
}

@keyframes moveBg {
    0% {
        transform: translate(0%, 0%) scale(1) rotate(0deg);
    }
    50% {
        transform: translate(-5%, -5%) scale(1.1) rotate(2deg);
    }
    100% {
        transform: translate(-12%, -10%) scale(1.2) rotate(-2deg);
    }
}

/* HEADER */
header {
    text-align: center;
    margin-bottom: 40px;
}

h1 {
    font-size: 4rem;
    letter-spacing: 8px;
    background: linear-gradient(90deg, #ff00ff, #00ffff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* HERO */
.hero {
    text-align: center;
    padding: 20px;
}

.hero h2 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.hero p {
    max-width: 700px;
    margin: auto;
    opacity: 0.85;
    line-height: 1.6;
}

/* BUTTONS */
.buttons {
    margin-top: 40px;
}

.btn {
    display: inline-block;
    padding: 14px 35px;
    margin: 10px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    transition: 0.3s ease;
}

/* Bouton Cyan */
.primary {
    border: 2px solid #00ffff;
    color: #00ffff;
}

/* Bouton Magenta */
.secondary {
    border: 2px solid #ff00ff;
    color: #ff00ff;
}

.btn:hover {
    transform: scale(1.08);
    background: rgba(255,255,255,0.05);
}

/* FOOTER */
footer {
    position: absolute;
    bottom: 20px;
    text-align: center;
    opacity: 0.6;
    font-size: 0.9rem;
}