:root {
    /* Palette de couleurs améliorée */
    --color-light-gray-blue: #CCDBDC;
    --color-light-teal: #9AD1D4;
    --color-medium-sky-blue: #80CED7;
    --color-dark-teal: #007EA7;
    --color-dark-navy: #003249;
    
    /* Couleurs principales */
    --primary-blue: var(--color-dark-teal);
    --secondary-blue: var(--color-medium-sky-blue);
    --accent-blue: var(--color-light-teal);
    --background-dark: var(--color-dark-navy);
    --text-light: var(--color-light-gray-blue);
    
    /* Couleurs spéciales */
    --star-gold: #FFD700;
    --star-silver: #C0C0C0;
    --star-blue: #87CEEB;
    --star-purple: #DDA0DD;
    --star-pink: #FFB6C1;
    
    /* Polices */
    --font-primary: 'Oswald', sans-serif;
    --font-secondary: 'Karla', sans-serif;
    --font-display: 'Orbitron', sans-serif;
}

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

body {
    font-family: var(--font-secondary);
    background: 
        radial-gradient(circle at 20% 80%, rgba(0, 126, 167, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(128, 206, 215, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(154, 209, 212, 0.08) 0%, transparent 50%),
        linear-gradient(135deg, #0a0e27 0%, #1a1d3a 50%, #0f1419 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--text-light);
    overflow: hidden;
    position: relative;
}

/* Champ d'étoiles magique */
body::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(1px 1px at 20px 30px, var(--star-gold), transparent),
        radial-gradient(1px 1px at 40px 70px, var(--star-silver), transparent),
        radial-gradient(1px 1px at 90px 40px, var(--star-blue), transparent),
        radial-gradient(1px 1px at 130px 80px, var(--star-purple), transparent),
        radial-gradient(1px 1px at 160px 30px, var(--star-pink), transparent),
        radial-gradient(1px 1px at 200px 60px, var(--star-gold), transparent),
        radial-gradient(1px 1px at 250px 20px, var(--star-silver), transparent),
        radial-gradient(1px 1px at 300px 90px, var(--star-blue), transparent),
        radial-gradient(1px 1px at 350px 50px, var(--star-purple), transparent),
        radial-gradient(1px 1px at 400px 10px, var(--star-pink), transparent);
    background-repeat: repeat;
    background-size: 500px 500px;
    opacity: 0.8;
}

/* Étoiles brillantes spéciales */
body::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(3px 3px at 15% 25%, var(--star-gold), transparent),
        radial-gradient(2px 2px at 85% 75%, var(--star-silver), transparent),
        radial-gradient(4px 4px at 45% 15%, var(--star-blue), transparent),
        radial-gradient(2px 2px at 75% 45%, var(--star-purple), transparent),
        radial-gradient(3px 3px at 25% 85%, var(--star-pink), transparent);
    background-repeat: no-repeat;
    opacity: 0.9;
}

.container {
    text-align: center;
    padding: 2rem;
    max-width: 700px;
    width: 100%;
    position: relative;
    z-index: 10;
}

.card {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.1) 0%, 
        rgba(154, 209, 212, 0.2) 25%,
        rgba(128, 206, 215, 0.15) 50%,
        rgba(0, 126, 167, 0.1) 75%,
        rgba(0, 50, 73, 0.2) 100%);
    backdrop-filter: blur(20px);
    border-radius: 40px;
    padding: 4rem 3rem;
    border: 2px solid rgba(255, 215, 0, 0.3);
    box-shadow: 
        0 25px 80px rgba(0, 0, 0, 0.4),
        0 0 60px rgba(255, 215, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
    position: relative;
    overflow: hidden;
}

/* Effet de constellation sur la card */
.card::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 20px;
    right: 20px;
    bottom: 20px;
    background: 
        radial-gradient(1px 1px at 30px 40px, var(--star-gold), transparent),
        radial-gradient(1px 1px at 80px 20px, var(--star-silver), transparent),
        radial-gradient(1px 1px at 120px 60px, var(--star-blue), transparent),
        radial-gradient(1px 1px at 200px 30px, var(--star-purple), transparent),
        radial-gradient(1px 1px at 250px 80px, var(--star-pink), transparent);
    background-repeat: no-repeat;
    opacity: 0.6;
    pointer-events: none;
}

.logo-container {
    margin-bottom: 3rem;
    position: relative;
}

.logo {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    border: 4px solid var(--star-gold);
    box-shadow: 
        0 0 30px var(--star-gold),
        0 0 60px rgba(255, 215, 0, 0.4),
        inset 0 0 20px rgba(255, 215, 0, 0.2);
    object-fit: cover;
    position: relative;
    background: linear-gradient(45deg, var(--star-gold), var(--star-silver));
}

/* Anneau d'étoiles autour du logo */
.logo::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    right: -20px;
    bottom: -20px;
    border-radius: 50%;
    background: 
        radial-gradient(2px 2px at 0deg 0deg, var(--star-gold), transparent),
        radial-gradient(2px 2px at 72deg 0deg, var(--star-silver), transparent),
        radial-gradient(2px 2px at 144deg 0deg, var(--star-blue), transparent),
        radial-gradient(2px 2px at 216deg 0deg, var(--star-purple), transparent),
        radial-gradient(2px 2px at 288deg 0deg, var(--star-pink), transparent);
    background-repeat: no-repeat;
    opacity: 0.8;
}

.title {
    font-family: var(--font-display);
    font-size: 4.5rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
    background: linear-gradient(45deg, 
        var(--star-gold) 0%, 
        var(--star-silver) 25%, 
        var(--star-blue) 50%, 
        var(--star-purple) 75%, 
        var(--star-pink) 100%);
    background-size: 300% 300%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 6px;
    text-shadow: 0 0 30px rgba(255, 215, 0, 0.5);
    position: relative;
}

.subtitle {
    font-family: var(--font-primary);
    font-size: 1.6rem;
    font-weight: 300;
    margin-bottom: 0;
    color: var(--star-silver);
    letter-spacing: 2px;
    text-transform: uppercase;
    text-shadow: 0 0 20px rgba(192, 192, 192, 0.6);
}

/* Effet de particules flottantes */
.container::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(1px 1px at 20% 30%, var(--star-gold), transparent),
        radial-gradient(1px 1px at 80% 70%, var(--star-silver), transparent),
        radial-gradient(1px 1px at 40% 60%, var(--star-blue), transparent),
        radial-gradient(1px 1px at 60% 20%, var(--star-purple), transparent),
        radial-gradient(1px 1px at 90% 40%, var(--star-pink), transparent);
    background-repeat: no-repeat;
    opacity: 0.4;
    pointer-events: none;
}

/* Particules flottantes magiques */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--star-gold);
    border-radius: 50%;
    box-shadow: 0 0 8px currentColor;
    animation: particleFloat 12s ease-in-out infinite;
    will-change: transform, opacity;
}

.particle:nth-child(2n) {
    background: var(--star-silver);
    animation-duration: 15s;
    animation-timing-function: ease-out;
}

.particle:nth-child(3n) {
    background: var(--star-blue);
    animation-duration: 18s;
    animation-timing-function: ease-in-out;
}

.particle:nth-child(4n) {
    background: var(--star-purple);
    animation-duration: 14s;
    animation-timing-function: ease-in;
}

.particle:nth-child(5n) {
    background: var(--star-pink);
    animation-duration: 16s;
    animation-timing-function: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

@keyframes particleFloat {
    0% {
        transform: translateY(100vh) translateX(0px) rotate(0deg) scale(0.5);
        opacity: 0;
    }
    10% {
        opacity: 1;
        transform: translateY(90vh) translateX(10px) rotate(36deg) scale(1);
    }
    25% {
        transform: translateY(75vh) translateX(-20px) rotate(90deg) scale(1.2);
    }
    50% {
        transform: translateY(50vh) translateX(30px) rotate(180deg) scale(0.8);
    }
    75% {
        transform: translateY(25vh) translateX(-15px) rotate(270deg) scale(1.1);
    }
    90% {
        opacity: 1;
        transform: translateY(10vh) translateX(5px) rotate(324deg) scale(0.9);
    }
    100% {
        transform: translateY(-100px) translateX(50px) rotate(360deg) scale(0);
        opacity: 0;
    }
}