/*===== GOOGLE FONTS =====*/
@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@400;600;700&display=swap");
/*===== VARIABLES CSS =====*/
:root{
  --header-height: 3rem;
  --font-semi: 600;
}

/*===== Colores =====*/
:root{
  --first-color: #4070F4;
  --second-color: #0E2431;
}

/*===== Fuente y tipografia =====*/
:root{
  --body-font: 'Poppins', sans-serif;
  --big-font-size: 2rem;
  --h2-font-size: 1.25rem;
  --normal-font-size: 0.938rem;
}
@media screen and (min-width: 768px){
  :root{
    --big-font-size: 3.5rem;
    --h2-font-size: 2rem;
    --normal-font-size: 1rem;
  }
}

/*===== Margenes =====*/
:root{
  --mb-1: 0.5rem;
  --mb-2: 1rem;
  --mb-3: 1.5rem;
  --mb-4: 2rem;
  --mb-5: 2.5rem;
  --mb-6: 3rem;
}

/*===== z index =====*/
:root{
  --z-back: -10;
  --z-normal: 1;
  --z-tooltip: 10;
  --z-fixed: 100;
}

/*===== BASE =====*/
*,::before,::after{
  box-sizing: border-box;
}
html{
  scroll-behavior: smooth;
}
body{
  margin: var(--header-height) 0 0 0;
  font-family: var(--body-font);
  font-size: var(--normal-font-size);
  color: var(--second-color);
}
h1,h2,p{
  margin: 0;
}
ul{
  margin: 0;
  padding: 0;
  list-style: none;
}
a{
  text-decoration: none;
}
img{
  max-width: 100%;
  height: auto;
  display: block;
}

/*===== CLASS CSS ===== */
.section-title{
  position: relative;
  font-size: var(--h2-font-size);
  color: var(--first-color);
  margin-top: var(--mb-2);
  margin-bottom: var(--mb-4);
  text-align: center;
}
.section-title::after{
  position: absolute;
  content: "";
  /* width: 64px;
  height: 0.18rem;
  left: 0;
  right: 0;
  margin: auto;
  top: 2rem;
  background-color: var(--first-color); */
}
.section{
  padding-top: 3rem;
  padding-bottom: 2rem;
}

/*===== LAYOUT =====*/
.bd-grid{
  max-width: 1024px;
  display: grid;
  grid-template-columns: 100%;
  grid-column-gap: 2rem;
  width: calc(100% - 2rem);
  margin-left: var(--mb-2);
  margin-right: var(--mb-2);
}
.l-header{
  width: 100%;
  position: fixed;
  top: 0;
  left: 0;
  z-index: var(--z-fixed);
  background-color: #fff;
  box-shadow: 0 1px 4px rgba(146,161,176,.15);
}

/*===== NAV =====*/
.nav{
  height: var(--header-height);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: var(--font-semi);
}
@media screen and (max-width: 768px){
  .nav__menu{
    position: fixed;
    top: var(--header-height);
    right: -100%;
    width: 80%;
    height: 100%;
    padding: 2rem;
    background-color: var(--second-color);
    transition: .5s;
  }
}
.nav__item{
  margin-bottom: var(--mb-4);
}
.nav__link{
  position: relative;
  color: #fff;
}
.nav__link:hover{
  position: relative;
}
.nav__link:hover::after{
  position: absolute;
  content: "";
  width: 100%;
  height: 0.18rem;
  left: 0;
  top: 2rem;
  background-color: var(--first-color);
}
.nav__logo{
  color: var(--second-color);
}
.nav__toggle{
  color: var(--second-color);
  font-size: 1.5rem;
  cursor: pointer;
}

/*Active menu*/
.active::after{
  position: absolute;
  content: "";
  width: 100%;
  height: 0.18rem;
  left: 0;
  top: 2rem;
  background-color: var(--first-color);
}

/*=== Show menu ===*/
.show{
  right: 0;
}

/*===== HOME =====*/
.home{
  height: calc(100vh - 3rem);
  row-gap: 1rem;
}
.home__data{
  align-self: center;
}
.home__title{
  font-size: var(--big-font-size);
  margin-bottom: var(--mb-5);
}
.home__title-color{
  color: var(--first-color);
}
.home__social{
  display: flex;
  flex-direction: column;
}
.home__social-icon{
  width: max-content;
  margin-bottom: var(--mb-2);
  font-size: 1.5rem;
  color: var(--second-color);
}
.home__social-icon:hover{
  color: var(--first-color);
}
.home__img{
  position: absolute;
  right: 0;
  bottom: 0;
  width: 295px;
}

/*BUTTONS*/
.button{
  display: inline-block;
  background-color: var(--first-color);
  color: #fff;
  padding: .75rem 2.5rem;
  font-weight: var(--font-semi);
  border-radius: .5rem;
}
.button:hover{
  box-shadow: 0 10px 36px rgba(0,0,0,.15);
}

/* ===== ABOUT =====*/
.about__container{
  row-gap: 2rem;
  text-align: center;
}
.about__subtitle{
  margin-bottom: var(--mb-2);
}
.about__img{
  justify-self: center;
}
.about__img img{
  width: 200px;
  border-radius: .5rem;
}



/* ===== SKILLS =====*/
/* .skills__container{
  row-gap: 2rem;
  text-align: center;
}
.skills__subtitle{
  margin-bottom: var(--mb-2);
}
.skills__text{
  margin-bottom: var(--mb-4);
}
.skills__data{
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  font-weight: var(--font-semi);
  padding: .5rem 1rem;
  margin-bottom: var(--mb-1);
  border-radius: .5rem;
  box-shadow: 0 4px 25px rgba(14,36,49,.15);
}
.skills__icon{
  font-size: 2rem;
  margin-right: var(--mb-2);
  color: var(--first-color);
}
.skills__names{
  display: flex;
  align-items: center;
}
.skills__bar{
  position: absolute;
  left: 0;
  bottom: 0;
  background-color: var(--first-color);
  height: .25rem;
  border-radius: .5rem;
  z-index: var(--z-back);
}
.skills__html{
  width: 95%;
}
.skills__css{
  width: 85%;
}
.skills__js{
  width: 65%;
}
.skills__ux{
  width: 85%;
}
.skills__img{
  border-radius: .5rem;
} */

/* Skills Section Styles */
/* Skills Section Styles */
/* Skills Section Styles */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr); /* 3 columns */
  grid-gap: 20px; /* Space between items */
  max-width: 800px;
  margin: 0 auto; /* Center grid on page */
  text-align: center;
}

.skill {
  position: relative;
}

.skill-button {
  background-color: #0066cc; /* Button color */
  color: white;
  padding: 10px;
  width: 100%;
  border: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: bold;
  display: flex;
  align-items: center;
  justify-content: center;
}

.skill-button:hover {
  background-color: #0052a3; /* Darker shade on hover */
}

/* Icon Style */
.dropdown-icon {
  margin-left: 10px;
  font-size: 12px;
  transition: transform 0.3s ease;
}

/* Rotate icon when dropdown is active */
.skill.active .dropdown-icon {
  transform: rotate(180deg); /* Upside-down arrow */
}

.skill-dropdown {
  display: none; /* Hide by default */
  padding: 10px;
  font-size: 15px;
  color: #333;
  text-align: left; /* Align text inside dropdown */
  background-color: #f9f9f9;
  border: 1px solid #ddd;
  margin-top: 5px;
}

/* Show the dropdown when clicked */
.skill.active .skill-dropdown {
  display: block;
}



/* ===== WORK =====*/
/* .work__container{
  row-gap: 2rem;
}
.work__img{
  box-shadow: 0 4px 25px rgba(14,36,49,.15);
  border-radius: .5rem;
  overflow: hidden;
}
.work__img img{
  transition: 1s;
  cursor: pointer;
}
.work__img img:hover{
  transform: scale(1.1);
} */


/* General styling for project container */
.work__container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

/* Each project item */
.work__item {
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

/* Project image */
.work__content img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  transition: transform 0.3s ease;
}

/* Overlay content */
.work__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

/* Overlay text and video link */
.work__overlay h3 {
  font-size: 1.5rem;
  margin-bottom: 10px;
}

.work__overlay p {
  font-size: 1rem;
  margin-bottom: 15px;
}

.work__overlay a {
  color: #4caf50;
  text-decoration: none;
  font-size: 1rem;
  border: 2px solid #4caf50;
  padding: 5px 10px;
  border-radius: 5px;
  transition: background 0.3s, color 0.3s;
}

.work__overlay a:hover {
  background: #4caf50;
  color: #fff;
}

/* Hover Effects */
.work__item:hover img {
  transform: scale(1.1);
}

.work__item:hover .work__overlay {
  opacity: 1;
}


/* ===== CONTACT =====*/
.contact__input{
  width: 100%;
  font-size: var(--normal-font-size);
  font-weight: var(--font-semi);
  padding: 1rem;
  border-radius: .5rem;
  border: 1.5px solid var(--second-color);
  outline: none;
  margin-bottom: var(--mb-4);
}
.contact__button{
  display: block;
  border: none;
  outline: none;
  font-size: var(--normal-font-size);
  cursor: pointer;
  margin-left: auto;
}

/* ===== FOOTER =====*/
.footer{
  background-color: var(--second-color);
  color: #fff;
  text-align: center;
  font-weight: var(--font-semi);
  padding: 2rem 0;
}
.footer__title{
  font-size: 2rem;
  margin-bottom: var(--mb-4);
}
.footer__social{
  margin-bottom: var(--mb-4);
}
.footer__icon{
  font-size: 1.5rem;
  color: #fff;
  margin: 0 var(--mb-2)
}

/* ===== MEDIA QUERIES=====*/
@media screen and (min-width: 768px){
  body{
    margin: 0;
  }
  .section{
    padding-top: 4rem;
    padding-bottom: 3rem;
  }
  .section-title{
    margin-bottom: var(--mb-6);
  }
  .section-title::after{
    width: 80px;
    top: 3rem;
  }

  .nav{
    height: calc(var(--header-height) + 1rem);
  }
  .nav__list{
    display: flex;
    padding-top: 0;
  }
  .nav__item{
    margin-left: var(--mb-6);
    margin-bottom: 0;
  }
  .nav__toggle{
    display: none;
  }
  .nav__link{
    color: var(--second-color);
  }

  .home{
    height: 100vh;
  }
  .home__data{
    align-self: flex-end;
  }
  .home__social{
    padding-top: 0;
    padding-bottom: 2.5rem;
    flex-direction: row;
    align-self: flex-end;
  }
  .home__social-icon{
    margin-bottom: 0;
    margin-right: var(--mb-4);
  }
  .home__img{
    width: 457px;
    bottom: 15%;
  }

  .about__container, .skills__container{
    grid-template-columns: repeat(2,1fr);
    align-items: center;
    text-align: initial;
  }
  .about__img img{
    width: 300px;
  }
  .work__container{
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2,1fr);
    column-gap: 2rem;
  }
  .contact__form{
    width: 360px;
  }
  .contact__container{
    justify-items: center;
  }
}

@media screen and (min-width: 1024px){
  .bd-grid{
    margin-left: auto;
    margin-right: auto;
  }
  .home__img{
    right: 10%;
  }
}


/* ############### */

/* Center Title */
/* Center Title */
.section-title {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 2rem;
}

/* Center the Timeline Section */
.timeline {
  display: flex;
  justify-content: center;
}

/* Center the Timeline Container */
.timeline__container {
  position: relative;
  width: 60%; /* Adjust as needed */
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Centered Vertical Line */
.timeline__container::before {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 100%;
  background-color: #333;
  z-index: 0; /* Ensures it stays behind the circles */
}

/* Alternating Timeline Events */
.timeline__event {
  margin-bottom: 2rem;
  position: relative;
  width: 45%;
}

.timeline__event--left {
  align-self: flex-end;
  text-align: left;
  padding-right: 2rem;
}

.timeline__event--right {
  align-self: flex-start;
  text-align: left;
  padding-left: 2rem;
}

/* Date Styling */
.timeline__date {
  font-weight: bold;
  color: #333;
  margin-bottom: 0.5rem;
}

/* Content Box Styling */
.timeline__content {
  background-color: #fff;
  padding: 1rem;
  border-radius: 5px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  position: relative;
  z-index: 1; /* Ensures it stays on top of the timeline line */
}

/* Circle for Each Event on the Line */
.timeline__event::before {
  content: "";
  width: 14px;
  height: 14px;
  background-color: #333; /* Color of the circle */
  border-radius: 50%;
  position: absolute;
  left: 50%;
  transform: translate(-50%, 0); /* Center the circle horizontally over the line */
  top: 0; /* Position at the top of the event */
  z-index: 1; /* Ensures the circle sits above the line */
}

/* Mobile Responsiveness */
@media screen and (max-width: 768px) {
  .timeline__container {
    width: 90%; /* Adjust width for smaller screens */
  }

  .timeline__event {
    width: 100%; /* Make events full width on mobile */
    margin-left: 0;
    margin-right: 0;
  }

  .timeline__event--left,
  .timeline__event--right {
    align-self: center;
    text-align: center;
    padding: 1rem; /* Adjust padding for better readability */
  }

  /* Vertical line adjustment */
  .timeline__container::before {
    height: auto; /* Allow it to adjust height dynamically */
    margin-top: 1rem; /* Provide space on top */
  }
}

/* Achievements Section Styles */
/* Achievements Section Styles */




/* Research Section Styles */
/* ===== RESEARCH ===== */
.research {
  padding-top: 3rem;
  padding-bottom: 2rem;
  margin-left: var(--mb-2); /* Matches left margin for the grid layout */
  margin-right: var(--mb-2); /* Matches right margin for the grid layout */
  width: 100%; /* Ensure it takes up full width, respecting grid layout */
  max-width: 1024px; /* Limit width similar to the grid system */
  margin-left: auto;
  margin-right: auto; /* Center-align it */
}

.research-content {
  border: 2px solid #ccc; /* Add a border for the box */
  border-radius: 8px; /* Rounded corners for the box */
  padding: 15px; /* Padding inside the box */
  margin: 10px 0; /* Margin above and below the box */
  background-color: #f9f9f9; /* Light background color for contrast */
}

.research-list {
  list-style-type: none; /* Remove bullet points */
  padding: 0; /* Remove default padding */
}

.publication {
  margin-bottom: var(--mb-1); /* Spacing between publications */
}

/* Optional: Style for links */
.publication a {
  color: #0066cc; /* Change link color */
  text-decoration: none; /* Remove underline from links */
}

.publication a:hover {
  text-decoration: underline; /* Underline on hover for better UX */
}




/* Section Styling */
.interests {
  padding: 40px;
  text-align: center;
}



/* Slider Styling */
.interests-slider {
  overflow: hidden;
  width: 100%;
  margin: auto;
  position: relative;
  max-width: 1000px; /* Set a max width */
}

.slide-track {
  display: flex;
  width: calc(250px * 12); /* Width based on image width and number of images */
  animation: scrollLeft 20s linear infinite;
}

.interests-slider img {
  width: 250px; /* Fixed width for each image */
  margin: 0 10px;
  height: auto;
  border-radius: 10px;
  object-fit: cover;
  box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.2);
}

/* Animation for scrolling */
@keyframes scrollLeft {
  from {
      transform: translateX(0);
  }
  to {
      transform: translateX(-50%);
  }
}

.bullet-list {
  list-style-type: disc; /* Ensures bullets are displayed */
  margin-left: 20px; /* Adds indentation to the list */
  padding-left: 0; /* Removes default padding */
}

.bullet-list li {
  margin-bottom: 5px; /* Adds spacing between list items */
}