:root {
    --primary: #452676;
    --step2: #5A3794;
    --step3: #6C4AB6;
    --step4: #8D72E1;
    --step5: #B9A7F5;
    --step6: #EDE9FF;
    --white: #FFFFFF;
}

body {
    background: linear-gradient(135deg, var(--primary), var(--step2), var(--step3));
    color: var(--primary);
    height: 100vh;
    overflow: hidden;
    font-family: 'Inter', sans-serif;
}

.star {
    position: fixed;
    background: var(--white);
    border-radius: 50%;
    animation: twinkle 2s infinite;
}
.star-1 { width: 2px; height: 2px; top: 15%; left: 20%; }
.star-2 { width: 3px; height: 3px; top: 25%; left: 75%; animation-delay: 1s; }
.star-3 { width: 2px; height: 2px; top: 45%; left: 85%; animation-delay: 0.5s; }
.star-4 { width: 2px; height: 2px; top: 65%; left: 15%; }
.star-5 { width: 3px; height: 3px; top: 80%; left: 45%; animation-delay: 1.5s; }
.star-6 { width: 2px; height: 2px; top: 35%; left: 50%; animation-delay: 0.8s; }
.star-7 { width: 2px; height: 2px; top: 55%; left: 35%; }
.star-8 { width: 3px; height: 3px; top: 70%; left: 90%; animation-delay: 0.3s; }
.star-9 { width: 2px; height: 2px; top: 10%; left: 55%; animation-delay: 1.2s; }
.star-10 { width: 2px; height: 2px; top: 90%; left: 70%; }

.planet-1 {
    position: fixed;
    width: 180px;
    height: 180px;
    bottom: 5%;
    left: -60px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 35%, var(--step5), var(--step3));
    box-shadow: 0 0 30px rgba(185, 167, 245, 0.5);
    animation: planetFloat 8s ease-in-out infinite;
    z-index: 0;
}
.planet-1::before {
    content: '';
    position: absolute;
    width: 240px;
    height: 40px;
    background: radial-gradient(ellipse, rgba(185, 167, 245, 0.6), transparent);
    border-radius: 50%;
    top: 50%;
    left: -30px;
    transform: translateY(-50%) rotate(15deg);
    filter: blur(4px);
}
.planet-1::after {
    content: '';
    position: absolute;
    width: 220px;
    height: 30px;
    background: radial-gradient(ellipse, rgba(141, 114, 225, 0.5), transparent);
    border-radius: 50%;
    top: 50%;
    left: -20px;
    transform: translateY(-50%) rotate(-5deg);
    filter: blur(3px);
}

.planet-2 {
    position: fixed;
    width: 100px;
    height: 100px;
    top: 20%;
    right: 10%;
    border-radius: 50%;
    background: radial-gradient(circle at 65% 40%, var(--step4), var(--step2));
    box-shadow: 0 0 25px rgba(108, 74, 182, 0.5);
    animation: planetSpin 12s linear infinite, planetFloat 6s ease-in-out infinite;
    z-index: 0;
}
.planet-2::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 50%;
    top: 25%;
    left: 20%;
    box-shadow: 35px 40px 0 0 rgba(0, 0, 0, 0.15), 55px 15px 0 0 rgba(0, 0, 0, 0.1), 15px 65px 0 0 rgba(0, 0, 0, 0.12);
}

.planet-3 {
    position: fixed;
    width: 140px;
    height: 140px;
    top: 55%;
    right: 25%;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--step5), var(--step3), var(--step4));
    box-shadow: 0 0 30px rgba(141, 114, 225, 0.6);
    animation: planetFloat 7s ease-in-out infinite reverse;
    z-index: 0;
}
.planet-3::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 20px;
    background: rgba(255, 255, 255, 0.3);
    top: 30%;
    left: 0;
    border-radius: 10px;
    filter: blur(3px);
}
.planet-3::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 15px;
    background: rgba(255, 255, 255, 0.2);
    top: 60%;
    left: 0;
    border-radius: 10px;
    filter: blur(2px);
}

.moon {
    position: fixed;
    width: 45px;
    height: 45px;
    top: 70%;
    left: 20%;
    border-radius: 50%;
    background: radial-gradient(circle at 40% 45%, var(--step6), var(--step4));
    box-shadow: 0 0 15px rgba(185, 167, 245, 0.5);
    animation: moonOrbit 15s linear infinite;
    z-index: 0;
}
.moon::before {
    content: '';
    position: absolute;
    width: 8px;
    height: 8px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 50%;
    top: 30%;
    left: 25%;
    box-shadow: 12px 20px 0 0 rgba(0, 0, 0, 0.15), 25px 10px 0 0 rgba(0, 0, 0, 0.1);
}

.planet-5 {
    position: fixed;
    width: 110px;
    height: 110px;
    bottom: 20%;
    right: 40%;
    border-radius: 50%;
    background: radial-gradient(circle at 35% 30%, var(--step6), var(--step3));
    box-shadow: 0 0 20px rgba(185, 167, 245, 0.6);
    animation: planetFloat 9s ease-in-out infinite;
    z-index: 0;
}
.planet-5::before {
    content: '';
    position: absolute;
    width: 150px;
    height: 25px;
    background: radial-gradient(ellipse, rgba(255, 255, 255, 0.5), transparent);
    border-radius: 50%;
    top: 50%;
    left: -20px;
    transform: translateY(-50%) rotate(35deg);
    filter: blur(3px);
}

.orbit-ring {
    position: fixed;
    width: 280px;
    height: 280px;
    top: 35%;
    left: 50%;
    transform: translateX(-50%);
    border: 2px solid rgba(185, 167, 245, 0.3);
    border-radius: 50%;
    animation: orbitRotate 20s linear infinite;
    z-index: 0;
}
.orbit-ring::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--step5);
    border-radius: 50%;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    box-shadow: 0 0 15px var(--step5);
}

.shooting-star {
    position: fixed;
    width: 2px;
    height: 2px;
    background: white;
    border-radius: 50%;
    box-shadow: 0 0 10px white;
    animation: shootingStar 3s linear infinite;
    opacity: 0;
    z-index: 0;
}
.shooting-star-1 { top: 10%; left: -20px; animation-delay: 0s; }
.shooting-star-2 { top: 30%; left: -20px; animation-delay: 2s; }
.shooting-star-3 { top: 50%; left: -20px; animation-delay: 4s; }

.rocket {
    position: fixed;
    z-index: 5;
    animation: rocketFloat 3s ease-in-out infinite;
}
.rocket img {
    width: 70px;
    filter: drop-shadow(0 5px 15px rgba(0,0,0,0.3));
    transition: transform 0.3s;
}
.rocket:hover img {
    transform: scale(1.1);
}
.rocket-1 { bottom: 15%; left: 5%; animation-delay: 0s; }
.rocket-2 { top: 20%; right: 8%; animation-delay: 1s; animation-duration: 4s; }
.rocket-3 { bottom: 35%; right: 15%; animation-delay: 2s; animation-duration: 3.5s; }
.rocket-4 { top: 55%; left: 12%; animation-delay: 0.5s; animation-duration: 4.5s; }
.rocket-5 { bottom: 60%; left: 20%; animation-delay: 1.5s; animation-duration: 3s; }
.rocket-6 { top: 75%; right: 20%; animation-delay: 2.5s; animation-duration: 5s; }

/* Hero */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 10;
}

/* Carte blanche */
.card {
    background: var(--white);
    border-radius: 40px;
    padding: 60px 70px;
    text-align: center;
    max-width: 900px;
    width: 90%;
    box-shadow: 0 30px 60px rgba(0,0,0,0.2);
    animation: fadeIn 0.6s ease;
    position: relative;
    z-index: 20;
}

.brand-header img {
    width: 300px;
    margin-bottom: 20px;
    filter: drop-shadow(0 10px 15px rgba(69, 38, 118, 0.1));
}

.card h1 {
    font-size: 42px;
    font-weight: 800;
    color: var(--step4);
    margin-bottom: 20px;
    white-space: nowrap;
}

.card p {
    font-size: 18px;
    color: var(--step3);
    margin-bottom: 35px;
    white-space: nowrap;
}

.btn {
    background: linear-gradient(135deg, var(--primary), var(--step2));
    color: var(--white);
    padding: 16px 48px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 16px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    cursor: pointer;
    border: none;
    width: auto;
    margin: 0 auto;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(69,38,118,0.4);
    color: var(--white);
    background: linear-gradient(135deg, var(--primary), var(--step2));
}

@keyframes twinkle {
    0%,100% { opacity: 0.3; }
    50% { opacity: 1; }
}
@keyframes planetFloat {
    0%,100% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
}
@keyframes planetSpin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}
@keyframes moonOrbit {
    from { transform: rotate(0deg) translateX(80px) rotate(0deg); }
    to { transform: rotate(360deg) translateX(80px) rotate(-360deg); }
}
@keyframes orbitRotate {
    from { transform: translateX(-50%) rotate(0deg); }
    to { transform: translateX(-50%) rotate(360deg); }
}
@keyframes shootingStar {
    0% {
        transform: translateX(0) translateY(0);
        opacity: 0;
        width: 2px;
    }
    10% {
        opacity: 1;
    }
    80% {
        opacity: 1;
    }
    100% {
        transform: translateX(500px) translateY(150px);
        opacity: 0;
        width: 0;
    }
}
@keyframes rocketFloat {
    0%,100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 1024px) {
    .card { padding: 50px 40px; max-width: 700px; }
    .card h1 { font-size: 36px; white-space: normal; }
    .card p { font-size: 16px; white-space: normal; }
}

@media (max-width: 768px) {
    .card { padding: 40px 30px; width: 90%; }
    .card h1 { font-size: 28px; }
    .card p { font-size: 14px; }
    .rocket img { width: 50px; }
    .planet-1, .planet-2, .planet-3, .planet-5 { transform: scale(0.6); }
    .orbit-ring { transform: translateX(-50%) scale(0.6); }
    .brand-header img { width: 200px; }
    .btn { padding: 12px 32px; font-size: 14px; }
}