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

/* Body */
body {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background: linear-gradient(135deg, #f0f0f5, #d0d4ff);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    text-align: center;
    color: #333;
}

/* Container */
.container {
    background: #fff;
    padding: 50px 40px;
    border-radius: 15px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
    max-width: 600px;
    width: 90%;
}

/* Titres et paragraphes */
h1 {
    font-size: 2rem;
    color: #2c3e50;
    margin-bottom: 20px;
}
p {
    font-size: 1rem;
    color: #555;
    margin-bottom: 20px;
    line-height: 1.5;
}

/* Boutons */
.btn-group {
    margin-top: 20px;
}
.btn {
    display: inline-block;
    padding: 12px 24px;
    margin: 5px;
    text-decoration: none;
    border-radius: 8px;
    font-weight: bold;
    background-color: #3498db;
    color: white;
    transition: transform 0.3s ease, opacity 0.3s ease;
}
.btn:hover {
    transform: translateY(-3px);
    opacity: 0.9;
}

/* Footer */
.footer {
    margin-top: 30px;
    font-size: 0.8rem;
    color: #aaa;
}