/* Réinitialisation de base et styles globaux */
body, html {
    margin: 0;
    padding: 0;
    height: 100%;
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #ffffff;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}

/* Conteneur principal */
.container {
    padding: 2rem;
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 15px;
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.18);
    max-width: 90%;
    width: 500px;
}

/* Titres */
h1 {
    font-size: 3rem;
    font-weight: 600;
    margin: 0;
    letter-spacing: 2px;
}

h2 {
    font-size: 1.5rem;
    font-weight: 300;
    margin: 0 0 2rem 0;
    opacity: 0.9;
}

/* Contenu principal */
.announcement {
    font-size: 1.2rem;
    font-weight: 600;
}

.details {
    font-size: 1rem;
    font-weight: 300;
    opacity: 0.8;
}

/* Pied de page */
footer {
    margin-top: 2.5rem;
    font-size: 0.8rem;
    opacity: 0.6;
}