* {
  /* padrao para todos os sites */
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  list-style: none;
  font-family: "Montserrat", sans-serif;
}

body {
  background-color: #0f0f1e;
  color: white;
  font-size: 16px;
  overflow: hidden;
  /*tira o scroll*/
}

header {
  position: fixed;
  top: 0;
  /* fixa no topo */
  width: 90vw;
  padding: 20px 50px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 3;
}

.logo {
  font-family: "Orbitron", sans-serif;
  font-size: 2rem;
  font-weight: 900;
  color: #00f7ff;
  text-shadow: 0 0 10px rgba(0, 247, 255, 0.5);
}

header nav ul {
  display: flex;
  /* exibe os itens em linha */
  gap: 48px;
}

header nav ul li {
  cursor: pointer;
  /*muda para mão*/
  position: relative;
  padding: 5px 0;
  /* deixa relativo para colocar o after */
}

header nav ul li::after {
  /* cria uma linha embaixo do item */
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background-color: #00f7ff;
  /*trasição */
  transition: width 0.3s ease;
}

header nav ul li:hover:after {
  /* aumenta a linha ao passar o mouse */
  width: 100%;
}

.container {
  height: 100vh;
  /*ocupar a tela toda*/
  position: relative;
  background: linear-gradient(135deg, #0f0f1e 0%, #1f1f3a 100%);
  overflow: hidden;
}

.container::before {
  content: "";
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(0, 247, 255, 0.2) 0%,
    rgba(15, 15, 30, 0) 70%
  );
  /*macete para ficar no meio*/
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  /*macete para ficar no meio*/
  filter: blur(50px);
  /*ficar na frente*/
  z-index: 1;
  /*ficar na frente*/

  /* criar a animão do dps de criar o keyframes */
  animation: pulse 1.5s infinite alternate;
}

/*criar animação*/
@keyframes pulse {
  /* no momento 0%*/
  0% {
    opacity: 0.5;
    transform: translate(-50%, -50%) scale(0.8);
  }

  100% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(2);
  }
}

.list {
  width: 80%;
  height: 100%;
  margin: 0 auto;
  position: relative;
}

.item {
  position: absolute;
  inset: 0;
  /*tds as posições zero*/
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;

  /*animacao*/
  transform: translateX(100vw);
  transition: transform 0.7s ease-in-out, opacity 0.7s ease-in-out;
}

.active {
  opacity: 1;
  transform: translateX(0);
}

.product-img {
  width: 45%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 2;
}

.product-img img {
  max-width: 80%;
  max-height: 60%;
  /* para colocar o pulse em volta do item */
  filter: drop-shadow(0 0 30px rgba(0, 247, 255, 0.3));

  /* animacao */
  transform: translateX(400px);
  opacity: 0;
  transition: transform 0.6s ease, opacity 0.6s ease;
  transition-delay: 0.5s;
}

.active .product-img img {
  transform: translateX(0);
  opacity: 1;
}

.content {
  width: 55;
  padding-right: 80px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  z-index: 2;
  flex-direction: column;
}

.product-tag {
  font-size: 1rem;
  text-transform: uppercase;
  color: #00f7ff;
  font-weight: 600;
  letter-spacing: 2px;
  margin-bottom: 10px;
  
/* animacao */
  transform: translateX(400px);
  opacity: 0;
  transition: transform 0.6s ease, opacity 0.6s ease;
  transition-delay: 0.5s;
}

.active .product-tag {
  transform: translateX(0);
  opacity: 1;
}

.product-name {
  font-size: 4.5rem;
  font-family: "Orbitron", sans-serif;
  line-height: 1.1;
  margin-bottom: 20 px;
  /* animacao */
  transform: translateX(400px);
  opacity: 0;
  transition: transform 0.6s ease, opacity 0.6s ease;
  transition-delay: 0.5s;
}

.active .product-name {
  transform: translateX(0);
  opacity: 1;
}

.description {
  font-size: 1.1rem;
  line-height: 1.5;
  color: #b0b0b0;
  margin-bottom: 30px;
  max-width: 600px;
  /* animacao */
  transform: translateX(400px);
  opacity: 0;
  transition: transform 0.6s ease, opacity 0.6s ease;
  transition-delay: 0.5s;
}

.active .description {
  transform: translateX(0);
  opacity: 1;
}

.btn {
  padding: 12px 16px;
  background: linear-gradient(90deg, #00f7ff, #00aaff);
  border-radius: 30px;
  color: #000;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  /* animacao */
  transform: translateX(400px);
  opacity: 0;
  transition: transform 0.6s ease, opacity 0.6s ease;
  transition-delay: 0.5s;
}

.active .btn {
  transform: translateX(0);
  opacity: 1;
}

.btn:hover {
  background: linear-gradient(90deg, #00aaff, #00f7ff);
  box-shadow: 0 0 10px rgba(0, 247, 255, 0.5);
  transform: scale(1.05);
  transition: all 0.3s ease;
}

.arrows {
  position: absolute;
  width: 90%;
  display: flex;
  justify-content: space-between;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 5;
}

.arrow-btn {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  cursor: pointer;
  background-color: rgba(255, 255, 255, 0.1);
  border: 1 px solid rgba(0, 247, 255, 0.3);
}

.arrow-btn:hover {
  background-color: rgba(0, 247, 255, 0.2);
  border-color: #00aaff;
}

.indicators {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
  z-index: 5;
}

.numbers {
  font-family: "Orbitron", sans-serif;
  font-size: 3rem;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.2);
}

.dots {
  display: flex;
  gap: 10px;
}

.dot {
  width: 40px;
  height: 4px;
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 2px;
}

.dot.active {
  background-color: #00f7ff;
  box-shadow: 0 0 10px rgba(0, 247, 255, 0.5);
}

.tech-circle {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  /* para ocupar td espaço da tela mas overflow transparencia */
}

.circle {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(0, 247, 255, 0.2);
}

.circle:nth-child(1) {
  width: 300px;
  height: 300px;
  top: 60%;
  left: 80%;
}
.circle:nth-child(2) {
  width: 150px;
  height: 150px;
  top: 70%;
  left: 20%;
}
.circle:nth-child(3) {
  width: 200px;
  height: 200px;
  top: 10%;
  left: 10%;
}
.circle:nth-child(4) {
  width: 120px;
  height: 120px;
  top: 20%;
  left: 70%;
}