body {
    margin: 0;
    padding: 0;
    font-family: Arial, Helvetica, sans-serif;
    color: lightgray;
}

html {
    scroll-behavior: smooth;
}

.container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 100px;
    background-color: #001f7c38;
}

.back-vid {
    position: fixed;
    right: 0;
    bottom: 0;
    z-index: -1;
    mix-blend-mode: overlay;
    mix-blend-mode: lighten;
}

header {
    display: flex;
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    background-color: rgba(255, 255, 255, 0.123);
    backdrop-filter: blur(10px);
    padding: 0 30px;
    box-shadow: 0 0 15px #72a1de68;
    z-index: 999;
}

.left {
    display: flex;
    align-items: center;
}

.left img {
    width: 40px;
    margin: 0 15px;
}

header ul {
    display: flex;
    justify-content: space-between;
    width: 30%;
    padding: 15px 15px;
    border-radius: 50px;
    background-color: rgba(0, 0, 69, 0.30);
    backdrop-filter: blur(10px);
    box-shadow: 0 0 10px #727fde65;
}

header ul li {
    list-style: none;
}

header ul a {
    text-decoration: none;
    color: white;
    font-weight: 700;
    margin: 0 10px;
}

.box-icons {
    display: flex;
    gap: 40px;
}

.box-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    width: 30px;
    height: 30px;
    border: 2px solid #727fde;
    text-decoration: none;
    color: lightgray;
    border-radius: 50%;
    transition: 0.3s;
}

.box-icons a:hover {
    background-color: #727fde;
    color: black;
    box-shadow: 0 0 15px #727fde6f;
}

.blackhole-box {
    z-index: -1;
    position: absolute;
    top: 0;
    width: 100%;
    justify-content: center;
    mix-blend-mode: lighten;
}

.blackhole-box video {
    width: 100%;
    margin-top: -23.5%;
}

.hero {
    position: relative;
    display: flex;
    width: 100%;
    height: 100vh;
    align-items: center;
    justify-content: space-between;
}

.hero-info {
    position: absolute;
    left: 5%;
}

.hero-info .hero-info-title {
    color: #727fde;
    padding: 8px 5px;
    border: 1px solid #727fde77;
    width: 240px;
    background-color: #2200493d;
    box-shadow: 0 0 5px #727fde88;
    border-radius: 50px;
}

.hero-info h1{
    font-size: 60px;
    max-width: 600px;
    font-weight: 700;
    line-height: 70px;
    margin-top: 40px;
    margin-bottom: 30px;
}

.hero-info p{
    max-width: 550px;
    line-height: 25px;
    margin-bottom: 40px;
    font-size: 20px;
}

.hero-info button {
    color: white;
    padding: 15px 35px;
    border-radius: 10px;
    border: 1px solid #727fdeb4;
    background-color: #2200493d;
    box-shadow: 0 0 5px #727fde86;
    cursor: pointer;
    transition: 0.3s;
}

.hero-info button:hover {
     box-shadow: 0 0 15px #727fde86;

}

/* Gradient animated */

.gradient {
    background: linear-gradient(to right, #008baa, #7e42a7, #6600c5, #6070fd, #2a46ff, #0099ff, #008ead);
    background-size: 200%;
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: animate-gradient 2.5s linear infinite;
}

@keyframes animate-gradient {
    to{
        background-position: 200%;
    }
}

.hero-vid-box {
    position: absolute;
    right: 0%;
}

.hero-vid-box video {
    height: 900px;
    mix-blend-mode: lighten;
}

.scroll-down {
    height: 50px;
    width: 30px;
    border: 2px solid lightgray;
    position: absolute;
    left: 49%;
    bottom: 8%;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: 0 0 15px rgba(211, 211, 211, 0.477);
}

.scroll-down::before,
.scroll-down::after {
    content: "";
    position: absolute;
    top: 20%;
    left: 49%;
    height: 10px;
    width: 10px;
    border: 2px solid lightgray;
    transform: translate(-50%, -100%) rotate(45deg);
    border-top: transparent;
    border-left: transparent;
    animation: scroll-down 2s ease-in-out infinite;
}

.scroll-down::before {
    top: 30%;
    animation-delay: 0.5s;
}

@keyframes scroll-down {
    0% {
        opacity: 0;
    }
    30%, 60% {
        opacity: 1;
    }
    100% {
        top: 90%;
        opacity: 0;
    }
}

.info-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 80%;
    margin-top: 100px;
}

.section-title {
    font-size: 40px;
    font-weight: 700;
}

.info-cards {
    display: grid;
    grid-template-columns: auto auto auto;
    gap: 20px;
    width: 100%;
    height: 100%;
    margin-top: 30px;
}

.card {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    position: relative;
    width: auto;
    height: 40vh;
    overflow: hidden;
    border: 1px solid gray;
    background-color: #080020b7;
    border-radius: 20px;
    transition: 0.3s;
}

.card img{
    width: 80%;
    height: 50%;
    object-fit: cover;
}

.card h1 {
    position: absolute;
    margin: 0;
    bottom: 40%;
    left: 5%;
    font-size: 25px;
    z-index: 1;
    color: lightgray;
}

.card p {
    position: absolute;
    bottom: 3%;
    left: 5%;
    z-index: 1;
    max-width: 450px;
    color: gray;
    font-size: 13px;
    line-height: 20px;
    margin-top: 90%;
}

.card video {
    margin-top: 10%;
    width: 70%;
    height: 50%;
    object-fit: cover;
    mix-blend-mode: lighten;
}

.card button {
    color: white;
    padding: 10px 15px;
    border-radius: 10px;
    border: 1px solid #727fdeb4;
    background-color: #2200493d;
    box-shadow: 0 0 5px #727fde86;
    cursor: pointer;
    transition: 0.3s;
    position: absolute;
    bottom: 5%;
    left: 5%;
}

.card button:hover {
    box-shadow: 0 0 15px #727fde86;
    opacity: 0.7;
}

.card:hover {
    box-shadow: 0 0 15px rgba(211, 211, 211, 0.5);
}

.card:nth-child(3){
    grid-row: span 2;
    height: 83vh;
}

.card:nth-child(3) p{
    bottom: 12%;
}

.card:nth-child(3) h1{
    bottom: 21%;
}

.card:nth-child(4){
    grid-column: span 2;
}

.card:nth-child(4) P{
    max-width: 650px;
}

.card:nth-child(4) h1{
    bottom: 35%;
}

/* My projects David */

.my-projects {
    display: flex;
    flex-direction: column;
    gap: 10%;
    align-items: center;
    position: relative;
    width: 80%;
    height: auto;
    margin-top: 200px;
    margin-bottom: 700px;
}

.project-card {
    display: flex;
    width: 100%;
    height: 35vh;
    margin-bottom: 80px;
    align-items: center;
    gap: 10%;
    justify-content: center;
}

.project-vidbox {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50%;
    position: relative;
    cursor: pointer;
    min-width: 400px;
    transition: 0.5s;
    mix-blend-mode: exclusion;
}

.project-vidbox video {
    object-fit: cover;
    width: 100%;
    box-shadow: 0 0 10px lightgray;
    border-radius: 20px;
    transition: 0.5s;
}

.project-vidbox video:hover{
    box-shadow: 0 0 20px lightgray;
}

.project-info {
    display: flex;
    flex-direction: column;
    align-items: start;
    justify-content: center;
    width: 50%;
    padding-left: 10%;
}

.project-info h1 {
    width: 90%;
    font-size: 25px;
    font-weight: bold;
    text-wrap: nowrap;
    margin-bottom: 10px;
    margin-top: 0;
    max-width: 450px;
}

.project-info p {
    width: 90%;
    max-width: 400px;
    min-width: 300px;
    margin-bottom: 50px;
    margin-top: 0;
}

.project-info button {
    color: white;
    padding: 10px 15px;
    border-radius: 10px;
    border: 1px solid #727fdeb4;
    background-color: #2200493d;
    box-shadow: 0 0 5px #727fde86;
    cursor: pointer;
    transition: 0.3s;
}

.project-info button:hover {
    box-shadow: 0 0 15px #727fde86;
    opacity: 0.7;
}

.hover-sign {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30%;
  height: 100px;
  pointer-events: none;
}

.hover-sign::before,
.hover-sign::after {
  content: "👆";
  text-align: center;
  position: absolute;
  font-size: 50px;
  top: 20%;
  left: 40%;
  border-radius: 50%;
  animation: hoverAnimation 2s ease-in-out infinite;
  opacity: 0.8;
}

@keyframes hoverAnimation {
  0% {
    box-shadow: 0 0 5px lightgray;
    transform: translate(100%, 50%) rotate(30deg);
  }
  100% {
    box-shadow: 0 0 5px lightgray;
    transform: translateX(80%, 50%) rotate(0deg);
  }
}

.hover-sign.active {
  display: none;
}

/* My Skills Section */

.skills-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}

.skills-box {
    width: 100%;
    height: 90vh;
    position: relative;
    display: flex;
    align-items: start;
    justify-content: center;
}

.skills-image {
    width: 70%;
    mix-blend-mode: lighten;
    opacity: 0.7;
}

.analyst {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: start;
    top: 25%;
    left: 5%;
    max-width: 300px;
}

.coder {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: start;
    top: 25%;
    right: 5%;
    max-width: 300px;
}

.skills-box h1 {
    font-size: 50px;
    display: flex;
    align-self: center;
}

.skills-box p {
    line-height: 23px;
}

/* Slider Configuracion */

.slider {
    position: absolute;
    bottom: 5%;
    right: 20%;
    width: 60%;
    height: var(--height);
    overflow: hidden;
    mask-image: linear-gradient(
        to right,
        transparent,
        #000 10% 90%,
        transparent
    );
    mix-blend-mode: difference;
    opacity: 0.8;
}

.slider .list {
    display: flex;
    width: 100%;
    min-width: calc(var(--width)* var(--quantity));
    position: relative;
}

.slider .list .item {
    width: var(--width);
    height: var(--height);
    position: absolute;
    left: 100%;
    animation: autoRun 10s linear infinite;
    transition: filter 0.5s;
    animation-delay: calc( (10s / var(--quantity)) * (var(--position) - 1) - 10s  )!important;
}

.slider .list .item img {
    width: 100%;
}

@keyframes autoRun {
    from {
        left: 100%;
    }to{
        left: calc(var(--width) * -1);
    }
}

.slider:hover .item {
    animation-play-state: paused!important;
    filter: grayscale(1);
}

.slider .item:hover {
   filter: grayscale(0);
}

/* Contact Me */

.contact-section {
    width: 80%;
    height: 100vh;
    display: flex;
    justify-content: center;
    gap: 10%;
    align-items: center;
    position: relative;
}

.contact-section h1 {
    position: absolute;
    top: 10%;
    left: 40%;
}

.social-box {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.social-box a {
    color: lightgray;
    text-decoration: none;
    font-size: 20px;
    text-wrap: nowrap;
}

.social-box i {
    color: #727fde;
    font-size: 30px;
    margin-right: 10px;
}

.social-box icons a i {
    color: white;
    margin-top: 40px;
}

footer {
    display: flex;
    position: absolute;
    bottom: 0;
    right: 0;
    left: 0;
    align-items: center;
    justify-content: center;
    height: 70px;
    background-color: rgba(255, 255, 255, 0.128);
    backdrop-filter: blur(10px);
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.356);
    z-index: 999;
}

footer h1 {
    font-size: 30px;
}

.menu-icon {
    font-size: 35px;
    cursor: pointer;
    display: none;
}

/* Blur Effect */

.autoBlur {
    animation: autoBlurAnimation linear both;
    animation-timeline: view();
}

@keyframes autoBlurAnimation {
    0% {
        filter: blur(40px);
        opacity: 0;
    }
    35%, 65% {
        filter: blur(0px);
        opacity: 1;
    }
    100% {
        filter: blur(40px);
        opacity: 0;
    }
}

/* Auto Display*/

.autoDisplay {
    animation: autoDisplayAnimation both;
    animation-timeline: view();
}

@keyframes autoDisplayAnimation {
    from {
        filter: blur(10px);
        transform: translateY(-200px) scale(0);
        opacity: 0.2;
    }
    50% {
        opacity: 1;
        filter: blur(0);
        transform: translateX(0) scale(1);
    }
}

/* Fadein left */

.fadein-left{
    animation: fadeInLeftAnimation both;
    animation-timeline: view();
}

@keyframes fadeInLeftAnimation{
    0%{
        opacity: 0;
        transform: translateX(-500px) scale(0.2);
        filter: blur(10px);
    } 35%,65%{
        opacity: 1;
        transform: translateX(0) scale(1);
        filter: blur(0px);
    }100%{
        filter: blur(10px);
    }
}

/* Sidebar */

.menu-icon{
    font-size: 35px;
    cursor: pointer;
    display: none;
}


.sidebar{
    position: fixed;
    right: 0;
    top: 0;
    bottom: 70%;
    width: 0%;
    background-color: #000000b8;
    z-index: 999;
    box-shadow: 0 0 25px rgba(255, 255, 255, 0.479);
    backdrop-filter: blur(10px);
    opacity: 0;
    border-bottom-left-radius: 100%;

}

.close-icon{
    font-size: 50px;
    color: lightgray;
    padding-left: 10px;
    cursor: pointer;
}

.sidebar ul{
    padding-left: 20px;
}

.sidebar ul li{
    list-style: none;
    margin-bottom: 30px;
}

.sidebar ul li a{
    text-decoration: none;
    color: lightgray;
    font-size: 30px;
    font-weight: 900;
    text-shadow:0 0 15px #4c4c4c;
}

.social-sidebar{
    padding-left: 20px;
    margin-top: 60px;
    text-wrap: nowrap;
}

.social-sidebar a{
    font-size: 35px;
    padding: 5px 5px;
    cursor: pointer;
    transition: 0.5s;
}

/* Sidebar Open ANimation */
.sidebar.open-sidebar{
    animation: openSideBarAnimation 1.5s forwards;
}

@keyframes openSideBarAnimation {
    to{
        width: 80%;
        opacity: 1;
        bottom: 0;
        border-radius: 0;
    }
}

/* Sidebar close ANimation */

.sidebar.close-sidebar{
    animation: closeSideBarAnimation 1.5s forwards;
}

@keyframes closeSideBarAnimation {
    from{
        width: 80%;
        opacity: 1;
        bottom: 0;
        border-radius: 0;
    }
    to{
        width: 0;
        opacity: 0;
        bottom: 70%;
        border-bottom-left-radius: 50%;
    }
}






@media (max-aspect-ratio: 16/9){
    .back-vid{
        width: auto;
        height: 100%;
    }
}

@media (min-aspect-ratio: 16/9){
    .back-vid{
        width: 100%;
        height: auto;
    }
}


@media screen and (max-width: 1200px){
    .blackhole-box video{
        margin-top: -20%;
    }

    .hero-info h1{
        font-size: 40px;
        max-width: 400px;
        line-height: 40px;
    }

    .hero-info P{
        max-width: 300px;
    }

    .skills-video-box{
        right: 0%;
    }

    .skills-video-box video{
        height: 500px;
    }

    .info-cards{
        grid-template-columns: auto;
    }

    .card:nth-child(3){
        grid-column: span 2;
        height: 70vh;
    }

    .info-cards .card h1{
        font-size: 20px;
    }

    .info-cards .card:nth-child(3) h1{
        bottom: 25%;
    }

    .card video{
        height: 60%;

        margin-top: 5%;
    }

    .my-project{
        margin-bottom: 200px;
        scale: 0.8;
    }

    .contact-section .section-title {
        left: 30%;
    }
}

@media screen and (max-width: 700px){
    header {
        position: fixed;
        height: 50px;
    }

    header ul{
        display: none;
    }

    header .box-icons{
        display: none;
    }

    .menu-icon{
        display: inline;
    }

    .blackhole-box video {
        width: 100%;
        margin-top: -15%;
    }

    .autoBlur{
        animation: none;
    }

    .hero{
        flex-direction: column;
        top:0;
        bottom: 0;
        left: 0;
        right:0;

    }
    .hero-info{
        bottom: 5%;
    }

    .scroll-down{
        bottom: 5%;
    }

    .hero .skills-video-box{
        height: 200px;
        top: 5%;
    }



    .info-cards{
        grid-template-columns: auto;
    }

    .card:nth-child(3){
        grid-column: span 2;
        height: 70vh;
    }

    .card video{
        width: 100%;
    }

    .container{
        height: 100%;
    }

    .project-vidbox video{
        width: 250px;
        margin-left: -100px;
    }

    .project-info{
        overflow: hidden;
        padding-left: 0;
        margin-left: -50px;
    }

    .project-info h1{
        font-size: 20px;
        max-width: 200px;
        text-wrap: wrap;
    }

    .project-info p{
        font-size: 10px;
        text-wrap: wrap;
        max-width: 200px;
        min-width: 0;
    }

    .project-info button{
        padding: 5px 10px;
    }

    .my-project{
        margin-bottom: 600px;
    }

    .project-card{
        flex-direction: column;
        margin-left: 25%;
        gap: 30px;
    }

    .project-vidbox{
        min-width: 200px;
    }

    .project-info{
        width: 85%;
    }

    .project-info h1{
        text-wrap: nowrap;
    }

    .project-info p{
        max-width: 300px;
    }

    .Designer{
        top: 15%;
        left: 18%;
    }

    .Designer h1{
        margin-bottom: 0;
        margin-top: 70px;
    }

    .coder{
        top: 50%;
        left: 18%;
    }

    .coder h1{
        margin-bottom: 0;
    }

    .slider .list .item img{
        width: 70%;
    }

    .contact-section{
        flex-direction: column;
        margin-top: 100px;
        margin-bottom: 50px;
    }

    .footer{
        font-size: 10px;
    }

    .social-box{
        margin-left: -90px;
    }
}


@media screen and (max-width: 480px) {

    .hero .skills-video-box {
        display: none;

    }

    .blackhole-box {
        overflow: hidden;
    }

    .blackhole-box video {
        width: 140%;
        margin-top: -27%;

    }

    .left {
        scale: 0.9;
        margin-left: -30px;
    }

    .left h2 {
        font-size: 20px;
    }

    .hero {
        scale: 0.9;
    }

    .hero-info{
        bottom: 15%;
    }

    .hero-info h1{
        font-size: 35px;
    }

    .scroll-down{
        bottom: 15%;
        left: 60%;
    }

    .section-title {
        font-size: 25px;
    }

    .info-cards{
        display: flex;
        flex-direction: column;
    }

    .card {
        min-height: 20rem;
    }

    .card h1{
        bottom: 30%;
        font-size: 5px;
    }

    .project-card {
        height: 50%;
    }

    .project-info p{
        margin-bottom: 15px;
    }

    .project-info{
        margin-left: -80px;
    }

    .skills-box{
        height: 120vh;
        margin-right: 30px;
    }

    .slider{
        bottom: 0%;
    }

    .contact-section{
        scale: 0.9;
        height: 120vh;
    }

    .contact-section .section-title {
        top: -30px;
        left: 25%;
    }

    .footer{
        padding: 15px;
    }

    .footer h1{
        max-width: 150px;
    }

    .footer .box-icons{
        gap: 10px;
    }
}

#pagination-controls {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 2rem;
}

.pagination-btn {
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid #444;
  color: #ccc;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.3s ease;
  backdrop-filter: blur(4px);
}

.pagination-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  transform: scale(1.05);
}

.active-page {
  background: linear-gradient(45deg, #00c6ff, #0072ff);
  color: white;
  border: none;
  font-weight: bold;
  box-shadow: 0 0 10px rgba(0, 114, 255, 0.6);
 }