:root{
    --color-primario:#2C3639;
    --color-secundario:#d5cebb;
    --color-terciario:#a27b5c;
    --color-hover:#3b5249;
    --color-blanco:#ffffff;
}

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

body{
    font-family:Arial, sans-serif;
    background-color:#f3f1ec;
    color:var(--color-primario);
}

.contenedor{
    min-height:100vh;
    display:flex;
    justify-content:center;
    align-items:center;
    padding:40px;
}

.cardRegistro{
    width:100%;
    max-width:500px;
    background-color:white;
    padding:40px;
    border-radius:20px;
    box-shadow:0 10px 25px rgba(0,0,0,0.1);
}

.cardRegistro h1{
    font-size:40px;
    margin-bottom:10px;
    color:var(--color-primario);
}

.subtitulo{
    color:#666;
    margin-bottom:30px;
    line-height:1.6;
}

.grupoInput{
    margin-bottom:25px;
}

.grupoInput label{
    display:block;
    margin-bottom:10px;
    font-weight:bold;
}

.grupoInput input{
    width:100%;
    padding:14px;
    border:2px solid #ddd;
    border-radius:12px;
    font-size:16px;
    transition:0.3s;
}

.grupoInput input:focus{
    outline:none;
    border-color:var(--color-terciario);
    box-shadow:0 0 10px rgba(162,123,92,0.2);
}

.btnRegistrar{
    width:100%;
    padding:15px;
    border:none;
    border-radius:12px;
    background-color:var(--color-terciario);
    color:white;
    font-size:16px;
    font-weight:bold;
    cursor:pointer;
    transition:0.3s;
    margin-top:10px;
}

.btnRegistrar:hover{
    background-color:var(--color-hover);
    transform:scale(1.02);
}

.btnVolver{
    display:block;
    text-align:center;
    margin-top:20px;
    text-decoration:none;
    color:var(--color-primario);
    font-weight:bold;
}

.btnVolver:hover{
    color:var(--color-terciario);
}

.mensaje{
    background-color:#f7f5f0;
    border-left:5px solid var(--color-terciario);
    padding:15px;
    border-radius:10px;
    margin-bottom:25px;
    line-height:1.5;
}

@media(max-width:600px){

    .cardRegistro{
        padding:30px;
    }

    .cardRegistro h1{
        font-size:32px;
    }
}