/* ===========================
   CONFIGURACIÓN GENERAL
=========================== */

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

html{
    scroll-behavior:smooth;
}

body{
    background:#f4f7fb;
    color:#333;
    line-height:1.6;
}

/* ===========================
   HEADER
=========================== */

.header{
    width:100%;
    background:#0f172a;
    position:fixed;
    top:0;
    left:0;
    z-index:1000;
    box-shadow:0 2px 8px rgba(0,0,0,.2);
}

.navbar{
    max-width:1200px;
    margin:auto;
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:10px 20px;
}

.logo{
    display:flex;
    align-items:center;
    gap:15px;
    color:white;
}

/* Logo */

.logo img{
    width:85px;
    height:85px;
    border-radius:50%;
    object-fit:cover;
    border:3px solid #f9fbfc;
    box-shadow:0 0 15px rgba(56,189,248,.6);
    transition:.3s;
}

.logo img:hover{
    transform:scale(1.08);
    box-shadow:0 0 25px rgba(56,189,248,.9);
}

/* Texto */

.logo-texto{
    display:flex;
    flex-direction:column;
}

.logo-texto h2{
    font-size:28px;
    margin:0;
    line-height:1.1;
}

.logo-texto p{
    font-size:14px;
    color:#38bdf8;
    margin-top:4px;
    letter-spacing:1px;
}

.menu{
    list-style:none;
    display:flex;
    gap:30px;
}

.menu a{
    color:white;
    text-decoration:none;
    transition:.3s;
    font-weight:500;
}

.menu a:hover{
    color:#38bdf8;
}

/* ===========================
   HERO
=========================== */

.hero{
    height:100vh;
    background:linear-gradient(rgba(15,23,42,.75),rgba(15,23,42,.75)),
    url("../img/hero.png") center/cover;
    display:flex;
    justify-content:center;
    align-items:center;
    text-align:center;
    color:white;
    padding:20px;
}

.hero-contenido{
    max-width:700px;
}

.hero h1{
    font-size:60px;
    margin-bottom:20px;
}

.hero p{
    font-size:20px;
    margin-bottom:30px;
}

.btn{
    display:inline-block;
    padding:14px 30px;
    background:#2563eb;
    color:white;
    text-decoration:none;
    border:none;
    border-radius:8px;
    cursor:pointer;
    transition:.3s;
    font-size:17px;
}

.btn:hover{
    background:#1d4ed8;
    transform:translateY(-3px);
}

/* ===========================
   PONENTES
=========================== */

.ponentes{
    padding:100px 20px;
    text-align:center;
}

.ponentes h2{
    font-size:38px;
    margin-bottom:50px;
    color:#0f172a;
}

.contenedor-ponentes{
    max-width:1200px;
    margin:auto;
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:30px;
}

.card{
    background:white;
    border-radius:15px;
    overflow:hidden;
    box-shadow:0 8px 20px rgba(0,0,0,.1);
    transition:.3s;
}

.card:hover{
    transform:translateY(-10px);
}

.card img{
    width:100%;
    height:300px;
    object-fit:cover;
}

.card h3{
    margin-top:20px;
    color:#2563eb;
}

.card h4{
    margin:10px;
    color:#555;
}

.card p{
    padding:0 20px 25px;
}

/* ===========================
   FORMULARIO
=========================== */

.formulario{
    background:#eaf2ff;
    padding:100px 20px;
}

.formulario h2{
    text-align:center;
    margin-bottom:40px;
    color:#0f172a;
}

form{
    max-width:600px;
    margin:auto;
    display:flex;
    flex-direction:column;
    gap:20px;
}

input,
select{
    padding:15px;
    border:1px solid #ccc;
    border-radius:8px;
    font-size:16px;
}

input:focus,
select:focus{
    outline:none;
    border-color:#2563eb;
}

.check{
    display:flex;
    align-items:center;
    gap:10px;
    font-size:15px;
}

/* ===========================
   FOOTER
=========================== */

footer{
    background:#0f172a;
    color:white;
    text-align:center;
    padding:40px 20px;
}

/* Footer de 3 columnas */

.footer-contenedor{

    max-width:1200px;

    margin:auto;

    display:grid;

    grid-template-columns:repeat(3,1fr);

    gap:50px;

    text-align:left;

    margin-bottom:35px;

}

.footer-col h3{

    margin-bottom:18px;

    color:#38bdf8;

}

.footer-col p{

    margin-bottom:12px;

    color:#d1d5db;

}

.footer-col ul{

    list-style:none;

}

.footer-col ul li{

    margin-bottom:12px;

}

.footer-col ul li a{

    color:#d1d5db;

    text-decoration:none;

    transition:.3s;

}

.footer-col ul li a:hover{

    color:#38bdf8;

    padding-left:6px;

}

.footer-col i{

    color:#38bdf8;

    margin-right:8px;

}

hr{

    margin:25px auto;

    border:none;

    border-top:1px solid rgba(255,255,255,.2);

    max-width:1200px;

}

.copyright{

    color:#d1d5db;

    margin-top:10px;

}

.redes{
    margin-top:20px;
}

.redes a{
    color:white;
    font-size:28px;
    margin:0 12px;
    transition:.3s;
}

.redes a:hover{
    color:#38bdf8;
}

/* ===========================
   RESPONSIVE TABLET
=========================== */

@media(max-width:992px){

    .contenedor-ponentes{
        grid-template-columns:repeat(2,1fr);
    }

    .hero h1{
        font-size:48px;
    }

}

/* ===========================
   RESPONSIVE CELULAR
=========================== */

@media(max-width:768px){

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

    .menu{
        flex-direction:column;
        text-align:center;
        gap:15px;
    }

    .hero{
        height:auto;
        padding:170px 20px 100px;
    }

    .hero h1{
        font-size:38px;
    }

    .hero p{
        font-size:18px;
    }

    .contenedor-ponentes{
        grid-template-columns:1fr;
    }
        .footer-contenedor{
        grid-template-columns:1fr;
        text-align:center;
    }

    .footer-col{
        margin-bottom:25px;
    }

}