* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    background-color: white;  /* este es el fondo de la pagina web creo xd */
    display: flex;
    justify-content: center;
    padding: 2rem;
}

.container {
    display: flex;
    flex-direction: row;
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px;
    max-width: 1000px;
    width: 100%;
}

.formulario {
    flex: 1;
    padding-right: 2rem;
}

.formulario h2 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
}

.campo {
    margin-bottom: 1.2rem;
}

.campo label {
    display: block;
    margin-bottom: 0.4rem;
    font-weight: bold;
}

.campo input, .campo select{
    width: 100;
    padding: 0.8rem;
    font-size: 1rem;
    border: 1px solid #4168e1;
    border-radius: 100px;
    outline: none;
}

.colores {
    display: flex;   /*  pone los circulos rectos el flex */
    gap: 10px;
    margin-top: 0.5rem;
}

.color-option{
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    border: 1px solid black;
    transition: transform 0.2s ease;
}

.color-option input {
    display: none;
}

.color-option:hover{ /*hace que haga como un efecto que se agranda */ 
    transform: scale(1.1);
}

.color-option input:checked + span,
.color-option input:checked {
    outline: 2px solid #333;
    box-shadow: 0 0 0 3px white, 0 0 0 5px #4168e1;
    border: 2px solid #4168e1;
}

.btn {
    background-color: #4168e1;
    color: white;
    border: none;
    padding: 0.9rem 1.2rem;
    font-size: 1rem;
    border-radius: 50px;
    cursor: pointer;
    width: 100%;
    margin-top: 1rem;
}

.btn:disabled {
    background-color: #cccccc;
    cursor: not-allowed;
    color: #666666;
}

.preview {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-left: 2px solid #eee;
    padding-left: 2rem;
}

.phone-frame {
    width: 300px;
    height: 540px;
    border: 16px solid #000;
    border-radius: 40px;
    position: relative;
    background: #fff;
    overflow: hidden;
}

.phone-frame::before {
    content: "";
    position: absolute;
    top:  -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 8px;
    background: #333;
    border-radius: 10px;
}

.qr-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    padding: 1rem;
    text-align: center;
}

.qr-container canvas {
    margin-bottom: 1rem;
}

.qr-container p {
    font-weight: bold;
    color: #333;
}

@media (max-width: 768px) {
    .container {
        flex-direction: column;
        padding: 1rem;
    }

    .formulario {
        padding-right: 0;
        margin-bottom: 2rem;
    }

    .preview {
        border-left: none;
        padding-left: 0;
    }
}