:root{
    --padding-color: rgba(255, 255, 255, 0.3);
    --background-gradient: linear-gradient(135deg, rgb(255, 232, 30) 0%, rgba(254, 12, 12, 0.568) 100%);
}


body {
margin: 0;
font-family: Arial, sans-serif;
background: var(--background-gradient);
color: white;
}

.screen {
height: 100vh;
display: flex;
justify-content: center;
align-items: center;
}

.hidden {
display: none;
}

.card {
background: var(--padding-color);
padding: 30px;
border-radius: 12px;
width: 300px;
text-align: center;
}

input {
width: 100%;
padding: 10px;
margin-top: 10px;
border-radius: 8px;
border: none;
outline: none;
box-sizing: border-box;
}

button {
margin-top: 15px;
width: 100%;
padding: 10px;
border: none;
background: var(--background-gradient);
color: white;
border-radius: 8px;
cursor: pointer;
}

header {
padding: 20px;
background: var(--padding-color);
text-align: center;
border-radius: 8px;
display: inline-block;
}

#greeting {
font-size: 34px;
font-family: Lexend Deca, sans-serif;
}

.content-box {
    display: none; /* Empiezan escondidos */
    background: #f0f0f0;
    padding: 20px;
    border: 1px solid #ccc;
    border-radius: 15px;
    margin: 10px 0;
}

.menu-btn {
    width: 100%;
    padding: 10px;
    border-radius: 20px;
    border: 1px solid black;
    background: white;
    cursor: pointer;
    font-weight: bold;
    margin-bottom: 5px;
    margin-top: 20px;
}