* {
    margin: 0;
    padding: 0;
}

body {
    background: url('../img/fondo.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
}

@keyframes slideInFromRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutToLeft {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(-100%);
        opacity: 0;
    }
}

.nav-2.active li {
    animation: slideInFromRight 0.6s forwards;
}

.nav-2.closing li {
    animation: slideOutToLeft 0.6s forwards;
}

.nav-2.active li:nth-child(1) { animation-delay: 0.1s; }
.nav-2.active li:nth-child(2) { animation-delay: 0.2s; }
.nav-2.active li:nth-child(3) { animation-delay: 0.3s; }
.nav-2.active li:nth-child(4) { animation-delay: 0.4s; }
.nav-2.active li:nth-child(5) { animation-delay: 0.5s; }
.nav-2.active li:nth-child(6) { animation-delay: 0.6s; }


@keyframes slideDown {
    0% {
        transform: translateY(-100%);
        /* Inicia fuera de la pantalla */
        opacity: 0;
        /* Opcional: Hace que el overlay aparezca gradualmente */
    }

    100% {
        transform: translateY(0);
        /* Llega a su posición original */
        opacity: 1;
    }
}

#overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    /* Fondo semi-transparente */
    z-index: 10;
    transform: translateY(-100%);
    /* Comienza fuera de la pantalla, arriba */
    transition: transform 0.5s ease-out;
    /* Transición suave */
    display: none;
    /* Inicialmente oculto */
}

#overlay.active {
    display: block;
    /* Mostrar overlay cuando esté activo */
    transform: translateY(0);
    /* Mover overlay a la posición original */
}

#overlay.closing {
    transform: translateY(-100%);
    /* Mover overlay hacia arriba al cerrar */
}

/* video de fondo */

.video-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    z-index: -1;
}

.video-background::before {
    content: '';
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.video-background video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

header {
    height: 10rem;
    width: 100%;
    display: flex;
    justify-content: space-between;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    transition: top 0.6s ease-in-out;
}

header ul {
    width: 100%;
    display: flex;
    justify-content: space-around;
    align-items: center;
}

header li {
    list-style: none;
    box-shadow: 0 0 8px #000000b3;
}

header a {
    font-family: sans-serif;
    font-size: 19px;
    display: flex;
    align-items: center;
    text-decoration: none;
    padding: 5px;
    border-radius: 20px;
    color: #ffffff;
    transition: text-shadow 0.3s ease, background-color 0.3s ease;
    /* Combinar transiciones */
}

header a:hover {
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.7);
}

.logo-section {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 90%;
    max-height: 135px;
    aspect-ratio: 1/1;
    box-shadow: 0 0 10px #000;
    border-radius: 100px;
    margin-left: 10px;
    background-color: #0003;
    z-index: 3;
    transition: ease-in-out .3s;
    cursor: pointer;
}

#kennedy-logo {
    height: 100%;
    transition: transform 0.3s ease-in-out;
}


#kennedy-logo:hover {
    transform: scale(1.2);
}

.logo-section:hover {
    background-color: #0009;
}

.icon {
    width: 26px;
    padding: 2px;
    border-radius: 5px;
    -webkit-user-select: none;
    user-select: none;
    filter: invert(100%);
}

.add {
    width: 10vw;
    height: 5vh;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 15px;
    padding: 10px 20px;
    cursor: pointer;
    box-shadow: 0 0 8px #000000b3;
    position: relative;
    z-index: 1;
    overflow: hidden;
    gap: 10px;
}

.add::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background-color: #222e55;
    z-index: -1;
    transition: width 0.4s ease;
    border-radius: 16px;
}

.add:hover::before {
    width: 100%;
    border-radius: 16px;
}

/* Menú */
.menu {
    display: flex;
    align-items: center;
    margin: 0 2rem 0 0;
}

.burger {
    display: none;
    position: relative;
    width: 45px;
    height: 33px;
    background: transparent;
    cursor: pointer;
    margin-left: 150px;
}

.burger input {
    display: none;
}

.burger span {
    display: block;
    position: absolute;
    height: 4px;
    width: 100%;
    background: white;
    border-radius: 9px;
    opacity: 1;
    left: 0;
    transform: rotate(0deg);
    transition: .25s ease-in-out;
}

.burger span:nth-of-type(1) {
    top: 0px;
    transform-origin: left center;
}

.burger span:nth-of-type(2) {
    top: 50%;
    transform: translateY(-50%);
    transform-origin: left center;
}

.burger span:nth-of-type(3) {
    top: 100%;
    transform-origin: left center;
    transform: translateY(-100%);
}

.burger input:checked~span:nth-of-type(1) {
    transform: rotate(45deg);
    top: -3px;
    left: 5px;
}

.burger input:checked~span:nth-of-type(2) {
    width: 0%;
    opacity: 0;
}

.burger input:checked~span:nth-of-type(3) {
    transform: rotate(-45deg);
    top: 28px;
    left: 5px;
}

/* Main */

.presentacion {
    position: relative;
    width: 100%;
    height: 72vh;
    margin-top: 11%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1;
}

.presentacion .titulo {
    font-family: "Jost", sans-serif;
    font-size: clamp(2.4rem, 4.2vw, 5rem);
    ;
    border-radius: 10px;
    color: #dcdcdc;
    text-shadow: 5px 5px 5px rgba(0, 0, 0, 0.5);
    transition: ease-in-out .2s;
    letter-spacing: 2px;
    animation: fadeInTitle 0.5s ease-in-out forwards;
    margin-top: 20px;
}

.presentacion .subtitulo {
    color: #900;
    text-shadow: 5px 5px 5px rgba(0, 0, 0, 0.5);
    text-decoration: overline 5px;
    font-family: "Playfair Display", serif;
    font-size: 7cap;
    align-self: center;
    transition: ease-in-out .2s;
    animation: fadeInSubtitle 1s ease-in-out forwards;
    margin-top: 1rem;
}

@keyframes fadeInTitle {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }

    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInSubtitle {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }

    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* botones */

.articulo {
    margin-top: 10%;
}

.artselec {
    margin: 1em auto;
    width: 800px;
    box-shadow: 0px 2px 10px rgba(0, 0, 0, 0.3);
    display: grid;
    place-items: center;
    background: rgba(0, 0, 0, 0.6);
    transition: all 0.3s;
}

.artselec:hover {
    background: rgba(43, 48, 117, 0.6);
    color: #eef;
}

.tex {
    padding: 0.5rem 0.7rem;
    width: 100%;
    text-align: center;
    font-size: 25px;
    text-decoration: none;
    font-family: sans-serif;
    color: #eee;
}

/* Slider */

.main {
    display: flex;
    align-items: center;
    margin: 6% auto;
    position: relative;
    width: 80%;
}

.slider {
    display: flex;
    overflow: hidden;
    width: 100%;
    position: relative;
}

.slide {
    min-width: 100%;
    transition: 10s ease;
    border-radius: 15px;
}

.slide img {
    width: 100%;
    height: auto;
    object-fit: cover;
    border-radius: 15px;
    transition: 10s ease;
}

button {
    border: none;
    background-color: rgba(0, 0, 0, 0.6);
    border-radius: 50%;
    padding: 12px;
    cursor: pointer;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    transition: all 0.4s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    border: 2px solid transparent;
}

button.left {
    left: -80px;
}

button.right {
    right: -80px;
}

button img {
    height: 35px;
    filter: invert(100%);
}

button:hover {
    background: rgba(43, 48, 117, 0.6);
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.6);
    border: 2px solid white;
}

button:hover::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(43, 48, 117, 0.4);
    border-radius: 50%;
    z-index: -1;
    transition: all 0.4s ease;
}

/* Footer */

.ft {
    font-family: "Montserrat", sans-serif;
    width: 100%;
    background: radial-gradient(at right top, #455897, #1d2749);
    margin-top: 20px;

    .cluster {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    p {
        color: #ffffff;
        font-size: 18px;
        text-align: center;
        margin: 15px 0;
    }

    .negri {
        font-weight: bold;
    }
}

/* Responsive */

@media screen and (max-width: 768px) {
    header a {
        padding: 16px;
    }
    .nav-2 li {
        opacity: 0;
    }

    .nav-2 {
        display: none;
        opacity: 0;
    }

    .nav-2.active {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        position: absolute;
        gap: 1.5rem;
        top: 120%;
        left: 0;
        opacity: 1;
    }

    .add {
        width: 38vw;
        height: 7vh;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 15px;
        padding: 9px 32px;
        cursor: pointer;
        box-shadow: 0 0 8px #ffffffb3;
        position: relative;
        z-index: 1;
        overflow: hidden;
        gap: 10px;
    }
    
 header{
    a{
        font-size: 23px;
    }

}

    .burger {
        display: block;
    }

    .presentacion {
        height: 90vh;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        text-align: center;

        & .titulo {
            text-align: center;
        }

        & .subtitulo {
            font-size: 45px;
            text-align: center;
        }
    }

    .articulo{
        margin-top: 15%;
    }

    .artselec {
        width: 75%;
        height: 60px;
        border-radius: 14px;

        & .tex {
            font-size: 15px;
        }
    }

    .cuadroc {
        flex-direction: column;
        gap: 5px;
    }

    .cluster {
        flex-direction: column;
    }

    button {
        display: none;
        opacity: 0;
    }

    button.left {
        left: -35px;
    }

    button.right {
        right: -35px;
    }

    button img {
        height: 24px;
    }

/* 
    .video-background video {
       
        width: 100%;
        height: auto;
    } 
*/

}