body {
    font-family: Arial, Helvetica, sans-serif;
    background: linear-gradient(135deg, #4facfe, #00f2fe);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Contenedor centrado */
body > * {
    text-align: center;
}

/* Caja principal */
.container {
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0px 10px 25px rgba(0,0,0,0.2);
}

/* Título */
h1 {
    margin-bottom: 25px;
    color: #333;
}

/* Botón */
button {
    padding: 12px 25px;
    border: none;
    border-radius: 25px;
    background: #4facfe;
    color: white;
    font-size: 16px;
    cursor: pointer;
    transition: 0.3s;
}

button:hover {
    background: #0077ff;
    transform: scale(1.05);
}

/* Link cerrar sesión */
a {
    display: inline-block;
    margin-top: 20px;
    text-decoration: none;
    color: #ff4d4d;
    font-weight: bold;
    transition: 0.3s;
}

a:hover {
    color: #6E1D23;
}