*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:Arial, Helvetica, sans-serif;
}

body{
    background:#f5f5f5;
    color:#333;
}

/* HEADER */

header{
    background:white;
    box-shadow:0 2px 8px rgba(0,0,0,.08);
}

.container{
    width:90%;
    margin:auto;
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:20px 0;
}

.logo{
    width:180px;
}

nav a{
    text-decoration:none;
    color:#0b5fa8;
    margin-left:25px;
    font-weight:bold;
    transition:.3s;
}

nav a:hover{
    color:#1ea15c;
}

/* HERO */

.hero{
    width:90%;
    margin:60px auto;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:50px;
}

.hero-text{
    flex:1;
}

.hero-text h1{
    color:#0b5fa8;
    font-size:48px;
    margin-bottom:20px;
}

.hero-text p{
    font-size:18px;
    line-height:1.8;
    margin-bottom:20px;
}

.btn{
    display:inline-block;
    padding:15px 35px;
    background:#1ea15c;
    color:white;
    text-decoration:none;
    border-radius:6px;
    transition:.3s;
}

.btn:hover{
    background:#157844;
}

.hero-image{
    flex:1;
    text-align:center;
}

.hero-image img{
    width:350px;
    max-width:100%;
}

/* CARDS */

.about{
    background:white;
    padding:70px 0;
}

.container-about{
    width:90%;
    margin:auto;
}

.about h2{
    text-align:center;
    color:#0b5fa8;
    margin-bottom:50px;
    font-size:35px;
}

.cards{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
    gap:30px;
}

.card{
    background:#f8f8f8;
    padding:35px;
    border-radius:10px;
    box-shadow:0 5px 15px rgba(0,0,0,.08);
    transition:.3s;
}

.card:hover{
    transform:translateY(-8px);
}

.card h3{
    color:#1ea15c;
    margin-bottom:15px;
}

.card p{
    line-height:1.7;
}

/* FOOTER */

footer{
    background:#0b5fa8;
    color:white;
    text-align:center;
    padding:20px;
}

/* RESPONSIVE */

@media(max-width:768px){

.hero{
    flex-direction:column;
    text-align:center;
}

.container{
    flex-direction:column;
    gap:20px;
}

.hero-text h1{
    font-size:36px;
}

nav{
    display:flex;
    gap:20px;
}

nav a{
    margin:0;
}

}
.modal{
    display:none;
    position:fixed;
    inset:0;
    background:rgba(0,0,0,.6);
    justify-content:center;
    align-items:center;
    z-index:9999;
}

.modal-content{
    background:white;
    padding:40px;
    border-radius:12px;
    width:400px;
    max-width:90%;
    text-align:center;
    position:relative;
}

.modal-content h2{
    margin-bottom:15px;
}

.modal-content input{
    width:100%;
    padding:12px;
    margin:20px 0;
    border:1px solid #ccc;
    border-radius:6px;
}

.modal-content button{
    background:#1c5638;
    color:white;
    border:none;
    padding:12px 25px;
    border-radius:6px;
    cursor:pointer;
}

.modal-content button:hover{
    background:#17492f;
}

.close{
    position:absolute;
    top:15px;
    right:20px;
    font-size:25px;
    cursor:pointer;
}

#mensajeError{
    color:red;
    margin-top:15px;
}