* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

main {
  max-width: 960px;
  margin: 40px auto;
  padding: 0 20px;
  display: flex;
  flex-direction: column;
  gap: 60px;
}

main section {
  width: 100%;
  text-align: center;
}

html,
body {
  width: 100%;
  color: white;
}

/* Header y navegación */
header {
  display: flex;
  background-color: #050608;
  color: white;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  height: 80px;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.nav-container {
  width: 100%;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
}

.logo {
  position: relative;
  font-weight: 700;
  font-size: 1.5rem;
  color: white;
  padding-left: 50px;
}

.logo::after {
  content: "_";
  position: absolute;
  right: -10px;
  animation: blink 1s steps(2, start) infinite;
  font-weight: 700;
  font-size: 1.5rem;
  color: white;
}

@keyframes blink {
  0%,
  50% {
    opacity: 1;
  }

  51%,
  100% {
    opacity: 0;
  }
}

nav {
  display: flex;
  gap: 35px;
  padding-right: 50px;
}

nav a {
  position: relative;
  color: white;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  overflow: hidden;
  transition:
    color 0.15s ease,
    text-shadow 0.15s ease;
}

nav a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: #61dafb;
  border-radius: 2px;
  transform-origin: center;
  transform: scaleX(0);
  transition: transform 0.15s ease;
}

nav a:hover {
  color: #61dafb;
  text-shadow:
    0 0 5px #61dafb,
    0 0 10px #61dafb,
    0 0 15px #61dafb;
}

nav a:hover::after {
  transform: scaleX(1);
}

@keyframes shine {
  from {
    background-position: 200% 0;
  }

  to {
    background-position: -200% 0;
  }
}

#studies h2 {
  transform: translateX(-20px);
  padding-bottom: 20px;
  color: #61dafb;
}

#experience h2 {
  transform: translateX(-20px);
  padding-bottom: 20px;
  color: #61dafb;
}

.container-languages,
.container-technologies {
  overflow-x: hidden;
  overflow-y: visible;
  margin: 0 auto;
  padding: 30px 0 20px;
  white-space: nowrap;
  width: 600px;
}

.container-languages ul,
.container-technologies ul {
  display: flex;
  gap: 20px;
  padding: 0;
  margin: 0;
  list-style: none;
  width: max-content;
}

.container-languages li,
.container-technologies li {
  flex: 0 0 auto;
}

.container-languages img,
.container-technologies img {
  display: block;
}

.about-container {
  display: flex;
  align-items: center;
  gap: 30px;
  margin: 0 auto 40px auto;
  text-align: left;
}

.scroll-arrow {
  margin-top: 20px;
  display: flex;
  justify-content: center;
  transition: opacity 0.4s ease;
}

.scroll-arrow span {
  display: block;
  width: 12px;
  height: 12px;
  border-bottom: 3px solid white;
  border-right: 3px solid white;
  transform: rotate(45deg);
  animation: arrowBounce 1.2s infinite;
}

@keyframes arrowBounce {
  0% {
    transform: rotate(45deg) translate(0, 0);
    opacity: 1;
  }

  50% {
    transform: rotate(45deg) translate(5px, 5px);
    opacity: 0.6;
  }

  100% {
    transform: rotate(45deg) translate(0, 0);
    opacity: 1;
  }
}

.scroll-arrow.hidden {
  opacity: 0 !important;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.about-image img {
  width: 200px;
  height: 200px;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid #61dafb;
  object-position: center 20%;
}

.about-text h1 {
  margin-bottom: 10px;
  font-size: 5rem;
  color: #61dafb;
}

.about-text p {
  font-size: 1.1rem;
  line-height: 1.5;
  color: white;
  width: 100%;
  max-width: 500px;
}

.container-languages ul li img,
.container-technologies ul li img {
  width: 40px;
  height: 40px;
  filter: drop-shadow(0 1px 1px rgba(0, 0, 0, 0.15));
  transition: transform 0.3s ease;
}

.container-languages ul li img:hover,
.container-technologies ul li img:hover {
  transform: scale(1.1);
}

/* Sección proyectos */
.projects-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  list-style: none;
  padding: 0;
  margin: 0 auto;
  color: black;
  padding-top: 20px;
  justify-content: center;
  max-width: 550px;
}

#projects h2 {
  padding-bottom: 20px;
  color: #61dafb;
}

#contact h2 {
  color: #61dafb;
  margin-top: 20px;
}

.projects-list li {
  background-color: #f0f0f0;
  border-radius: 8px;
  cursor: pointer;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
  opacity: 0;
  transform: translateY(40px);
  transition:
    opacity 0.8s ease-out,
    transform 0.8s ease-out,
    box-shadow 0.3s ease;
}

.projects-list li.active {
  opacity: 1;
  transform: translateY(0);
}

.projects-list li:hover {
  transform: scale(1.05);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
}

#projects .projects-list img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  display: block;
  margin: 0;
  border-radius: 8px 8px 0 0;
  transition: transform 0.3s ease;
}

.projects-list li:hover img {
  transform: scale(1.08);
}

.projects-list li .content {
  padding: 10px;
  box-sizing: border-box;
}

/* Sección contacto */
.contact-info {
  max-width: 600px;
  width: 100%;
  padding: 20px;
  background-color: rgba(0, 0, 0, 0.7);
  box-shadow: 0 0 15px rgba(97, 218, 251, 0.5);
  border: 2px solid rgba(97, 218, 251, 0.8);
  border-radius: 8px;
  margin: 0 auto;
  margin-bottom: 50px;
  transform: translateY(40px);
  transition:
    opacity 0.8s ease-out,
    transform 0.8s ease-out;
}

#contact.active {
  opacity: 1;
  transform: translateY(0);
}

#contact p {
  margin-top: 20px;
  text-align: center;
  padding: 0 50px;
}

/* Formulario */
form#contact-form {
  display: flex;
  flex-direction: column;
  padding-top: 40px;
  align-items: center;
}

form#contact-form label {
  font-weight: 600;
}

form#contact-form input,
form#contact-form textarea {
  padding: 8px 10px;
  border: 3px solid black;
  border-radius: 4px;
  font-size: 1rem;
  resize: vertical;
  transition: border-color 0.3s ease;
  width: 500px;
}

form#contact-form input:focus,
form#contact-form textarea:focus {
  border-color: #61dafb;
  outline: none;
}

form#contact-form button {
  padding: 10px 15px;
  border: none;
  width: 300px;
  background-color: #2e4db4;
  color: white;
  font-weight: 700;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.3s ease;
  margin-bottom: 20px;
}

form#contact-form button:hover {
  background-color: #21a1f1;
}

/* Footer */
footer {
  text-align: center;
  padding: 25px 10px;
  background-color: #050608;
  color: white;
  font-size: 0.9rem;
  margin-top: 60px;
  user-select: none;
}

.social-icons {
  display: flex;
  gap: 20px;
  justify-content: center;
  align-items: center;
  margin-top: 20px;
  margin-bottom: 10px;
}

.social-icons img {
  transition: transform 0.3s ease;
  cursor: pointer;
}

.social-icons img:hover {
  transform: scale(1.2);
}

#particles-js {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  background-color: rgb(25, 25, 51);
  /* Fondo de la página */
}

main,
footer {
  position: relative;
  z-index: 1;
}

.skills-group {
  padding-top: 30px;
}

#studies {
  position: relative;
  padding-left: 40px;
  max-width: 600px;
  margin: 0 auto 60px auto;
}

/* Línea vertical */
.studies-list::before,
.experience-list::before {
  content: "";
  position: absolute;
  left: 20px;
  width: 4px;
  height: 100%;
  background-color: #61dafb;
  border-radius: 2px;
}

/* Cada item */
.study-item {
  position: relative;
  border-radius: 8px;
  padding: 20px 25px 20px 40px;
  margin-bottom: 70px;
  opacity: 0;
  transform: translateX(-30px);
  transition: all 0.6s ease-out;
}

/* Punto en la línea para cada estudio */
.study-item::before,
.experience-item::before {
  content: "";
  position: absolute;
  top: 24px;
  left: -29px;
  width: 16px;
  height: 16px;
  background-color: #61dafb;
  border-radius: 50%;
  border: 3px solid white;
  box-shadow: 0 0 0 3px #61dafb;
}

/* Fecha */
.study-item .date {
  font-size: 0.9rem;
  color: #bbb;
  font-style: italic;
  margin-bottom: 8px;
  margin-top: 8px;
  display: block;
}

/* Animación para mostrar (clase activa) */
.study-item.active {
  opacity: 1;
  transform: translateX(0);
}

#experience {
  position: relative;
  padding-left: 40px;
  padding-top: 30px;
  max-width: 600px;
  margin: 0 auto 80px auto;
}

/* Cada item */
.experience-item {
  position: relative;
  border-radius: 8px;
  padding: 20px 25px 20px 40px;
  margin-bottom: 70px;
  opacity: 0;
  transform: translateX(-30px);
  transition: all 0.6s ease-out;
}

/* Fecha */
.experience-item .date {
  font-size: 0.9rem;
  color: #bbb;
  font-style: italic;
  margin-bottom: 8px;
  margin-top: 8px;
  display: block;
}

/* Animación para mostrar (clase activa) */
.experience-item.active {
  opacity: 1;
  transform: translateX(0);
}

#music-toggle {
  background: none;
  border: none;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
  margin-left: 10px;
  padding-right: 50px;
}

#menu-toggle {
  display: none;
  font-size: 1.8rem;
  background: none;
  border: none;
  cursor: pointer;
}

nav.open {
  display: flex;
}

.fadeInUp {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 1s ease forwards;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

main > * {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

main > *.active {
  opacity: 1;
  transform: translateY(0);
}

/* Delays escalonados para cada sección */
main > *:nth-child(1) {
  animation-delay: 0.2s;
}

main > *:nth-child(2) {
  animation-delay: 0.4s;
}

main > *:nth-child(3) {
  animation-delay: 0.6s;
}

main > *:nth-child(4) {
  animation-delay: 0.8s;
}

main > *:nth-child(5) {
  animation-delay: 1s;
}

.copyright {
  padding-top: 20px;
}

.scroll-wrapper,
.scroll-wrapper2 {
  display: flex;
  justify-content: center;
}

/* Responsive */
@media (max-width: 600px) {
  nav {
    position: fixed;
    top: 80px;
    right: 0;
    width: 200px;
    background-color: #050608;
    display: none;
    flex-direction: column;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.7);
    border-radius: 0 0 0 10px;
    padding: 15px;
    z-index: 10000;
    align-items: center;
    text-align: center;
  }

  nav a {
    color: white;
    padding: 10px 0;
    display: block;
  }

  nav a:hover {
    color: white !important;
    text-shadow: none !important;
  }

  nav a::after {
    display: none !important;
  }

  #menu-toggle {
    color: white;
    display: block;
    padding-right: 30px;
  }

  .scroll-wrapper,
  .scroll-wrapper2 {
    display: flex;
    justify-content: start;
  }

  /* Reduce márgenes laterales y verticales en main */
  main {
    margin: 20px 15px;
    padding: 0 15px;
  }

  /* Secciones max-width más pequeñas */
  main section {
    max-width: 100%;
    padding: 0 10px;
  }

  #about {
    padding-top: 30px;
  }

  .about-container {
    flex-direction: column;
    text-align: center;
    gap: 20px;
  }

  .about-image img {
    width: 120px;
    height: 120px;
  }

  .about-text h1 {
    font-size: 1.7rem;
  }

  .projects-list {
    grid-template-columns: 1fr;
    gap: 20px;
    max-width: 250px;
    margin: 0 auto;
  }

  .projects-list li {
    width: 100%;
  }

  .scroll-arrow {
    display: none;
  }

  /* Ajusta tamaño de fuente para textos */
  #about p,
  .projects-list,
  nav a {
    font-size: 0.9rem;
  }

  /* Ajusta tamaño y padding del logo */
  .logo {
    font-size: 1.3rem;
    padding-left: 30px;
  }

  #studies h2 {
    transform: translateX(-20px);
  }

  #experience h2 {
    transform: translateX(-5px);
  }

  .logo::after {
    content: "_";
    position: absolute;
    right: -10px;
    top: -3px;
    animation: blink 1s steps(2, start) infinite;
    font-weight: 200;
    font-size: 1.5rem;
    color: white;
  }

  /* Contact form ocupa casi todo el ancho */
  form#contact-form {
    max-width: 100%;
    padding: 10px;
    margin-top: 20px;
  }

  form#contact-form input,
  form#contact-form textarea {
    width: 100%;
    font-size: 1rem;
  }

  main section h2 {
    display: inline-block;
    border-bottom: 1px solid #fff;
    padding-bottom: 5px;
    margin-bottom: 20px;
  }

  #contact p {
    padding: 5px;
  }

  form#contact-form button {
    padding: 14px 20px;
    font-size: 1.1rem;
    width: 150px;
  }

  #music-toggle {
    display: none;
  }

  .container-languages,
  .container-technologies {
    width: 100%;
    padding: 10px 10px 20px 10px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch; /* scroll suave en iOS */
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE 10+ */
  }

  .container-languages ul,
  .container-technologies ul {
    display: flex;
    flex-wrap: nowrap;
    gap: 16px;
    margin: 0;
    padding: 10px 0;
    list-style: none;
    min-width: max-content;
  }

  .container-languages ul::-webkit-scrollbar,
  .container-technologies ul::-webkit-scrollbar {
    display: none; /* Chrome, Safari */
  }

  .container-languages ul li,
  .container-technologies ul li {
    flex: 0 0 auto;
    scroll-snap-align: start;
  }

  .container-languages ul li img,
  .container-technologies ul li img {
    width: 30px;
    height: 30px;
  }

  .container-languages h3 {
    padding-bottom: 10px;
  }

  .container-technologies h3 {
    padding-bottom: 10px;
  }

  .scroll-wrapper,
  .scroll-wrapper2 {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch; /* scroll suave en iOS */
    scrollbar-width: none; /* Firefox */
  }

  .scroll-wrapper::-webkit-scrollbar {
    display: none; /* Chrome, Safari */
  }

  .scroll-wrapper ul {
    display: flex;
    flex-wrap: nowrap;
    gap: 16px;
    margin: 0;
    padding: 10px 0;
    list-style: none;
    min-width: max-content;
  }

  .scroll-wrapper ul li {
    flex: 0 0 auto;
    scroll-snap-align: start;
  }

  .scroll-wrapper ul li img {
    width: 30px;
    height: 30px;
  }
}

/* Especial para web */
@media (min-width: 768px) {
  .about-text {
    padding-left: 20px;
  }

  .about-container {
    padding-left: 50px;
  }

  .container-languages h3 {
    padding-bottom: 30px;
  }

  .container-technologies h3 {
    padding-bottom: 30px;
  }
}