* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  list-style: none;
  font-family: "Montserrat", sans-serif;
}

.logo {
  font-family: "Orbitron", sans-serif;
  font-size: 2rem;
  font-weight: 900;
  color: #08e0ef;
  text-decoration: none;
  text-shadow: 0 0 10px rgba(5, 68, 93, 0.5);
}

header nav ul {
  display: flex;
  gap: 48px;
}

header nav ul li {
  cursor: pointer;
  position: relative;
  padding: 5px 0;
}

header nav ul li a {
  color: #fff;
  text-decoration: none;
  cursor: pointer;
  position: relative;
  padding: 5px 0;
  transition: color 0.3s ease;
}

header nav ul li a:hover {
  color: #08e0ef;
}

.cart-link {
  position: relative;
}

.cart-badge {
  position: absolute;
  top: -8px;
  right: -8px;
  background: linear-gradient(135deg, #ff4757 0%, #c44569 100%);
  color: #fff;
  border-radius: 50%;
  width: 20px;
  height: 20px;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  box-shadow: 0 2px 10px rgba(255, 71, 87, 0.5);
}

body {
  background-color: #0f0f1e;
  color: #fff;
  font-size: 16px;
  overflow-x: hidden;
}

header {
  position: fixed;
  width: 100%;
  top: 0;
  padding: 20px 50px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 3;
  background: rgba(15, 15, 30, 0.8);
  backdrop-filter: blur(10px);
}

.menu-toggle {
  display: none;
  background: transparent;
  border: 2px solid rgba(8, 224, 239, 0.3);
  border-radius: 8px;
  width: 40px;
  height: 40px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.menu-toggle span {
  width: 25px;
  height: 3px;
  background: #08e0ef;
  border-radius: 2px;
  transition: all 0.3s ease;
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

.nav-item::after,
.nav-item a::after {
  content: "";
  position: absolute;
  left: 0px;
  bottom: 0;
  width: 0%;
  height: 2px;
  background-color: #08e0ef;
  transition: width 0.5s ease;
}

.nav-item:hover::after,
.nav-item a:hover::after {
  width: 100%;
}
.container::before {
  content: "";
  position: absolute;
  width: 50%;
  height: 50%;
  background-color: #0f0f1e;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(0, 247, 255, 0.2) 0%,
    rgba(15, 15, 30, 0) 70%
  );
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  filter: blur(50px);
  z-index: 1;
  animation: pulse 10s infinite;
}

@keyframes pulse {
  0% {
    opacity: 0.5;
    transform: translate(-50%, -50%) scale(0.8);
  }
  50% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.5);
  }
  100% {
    opacity: 0.5;
    transform: translate(-50%, -50%) scale(0.8);
  }
}

.container {
  position: relative;
  width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 100px 50px 50px;
  z-index: 2;
}

.circles-container {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: 1;
}

.circle {
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(11, 230, 246, 0.3) 0%,
    transparent 70%
  );
  filter: blur(40px);
  animation: float 20s infinite ease-in-out;
}

.circle:nth-child(1) {
  top: 10%;
  left: 10%;
  animation-delay: 0s;
}

.circle:nth-child(2) {
  top: 60%;
  right: 10%;
  animation-delay: 5s;
}

.circle:nth-child(3) {
  bottom: 10%;
  left: 20%;
  animation-delay: 10s;
}

.circle:nth-child(4) {
  top: 30%;
  right: 30%;
  animation-delay: 15s;
}

@keyframes float {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  33% {
    transform: translate(30px, -30px) scale(1.1);
  }
  66% {
    transform: translate(-20px, 20px) scale(0.9);
  }
}

.slider-wrapper {
  position: relative;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  z-index: 2;
}

.list {
  width: 100%;
  height: 70vh;
  margin: 0 auto;
  position: relative;
}

.item {
  position: absolute;
  inset: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  opacity: 0;
  transition: opacity 0.5s ease;
  gap: 40px;
}

.item.active {
  opacity: 1;
  z-index: 2;
}

.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: 80%;
  object-fit: contain;
  filter: drop-shadow(0 0 20px rgba(11, 230, 246, 0.5));
  transition: transform 0.3s ease;
}

.product-img img:hover {
  transform: scale(1.05);
}

.content {
  width: 55%;
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 20px;
  z-index: 2;
}

.product-tag {
  font-size: 0.9rem;
  color: #0be6f6;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-weight: 600;
}

.product-name {
  font-size: 3.5rem;
  font-weight: 900;
  color: #fff;
  line-height: 1.2;
  text-shadow: 0 0 20px rgba(11, 230, 246, 0.3);
}

.description {
  font-size: 1.2rem;
  color: #a0a0a0;
  line-height: 1.6;
}

.btn {
  padding: 15px 40px;
  background: linear-gradient(135deg, #0be6f6 0%, #0a9fb8 100%);
  border: none;
  border-radius: 50px;
  color: #0f0f1e;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(11, 230, 246, 0.3);
  width: fit-content;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(11, 230, 246, 0.5);
}

.btn:active {
  transform: translateY(0);
}

.arrow-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(11, 230, 246, 0.1);
  border: 2px solid rgba(11, 230, 246, 0.3);
  border-radius: 50%;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  z-index: 10;
  color: #0be6f6;
}

.arrow-btn:hover {
  background: rgba(11, 230, 246, 0.2);
  border-color: rgba(11, 230, 246, 0.6);
  transform: translateY(-50%) scale(1.1);
}

.arrow-btn#prev {
  left: 20px;
}

.arrow-btn#next {
  right: 20px;
}

.indicators {
  display: flex;
  align-items: center;
  gap: 30px;
  margin-top: 40px;
  z-index: 2;
}

.numbers {
  font-size: 1.5rem;
  font-weight: 700;
  color: #0be6f6;
  font-family: "Orbitron", sans-serif;
  min-width: 40px;
}

.dots {
  display: flex;
  gap: 15px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(11, 230, 246, 0.3);
  cursor: pointer;
  transition: all 0.3s ease;
}

.dot.active {
  background: #0be6f6;
  box-shadow: 0 0 10px rgba(11, 230, 246, 0.8);
  transform: scale(1.2);
}

.dot:hover {
  background: rgba(11, 230, 246, 0.6);
}

/* ============================================
   RESPONSIVIDADE PARA SMARTPHONE
   ============================================ */

@media (max-width: 768px) {
  header {
    padding: 15px 20px;
    flex-wrap: wrap;
  }

  .logo {
    font-size: 1.5rem;
  }

  .menu-toggle {
    display: flex;
    order: 3;
  }

  header nav {
    width: 100%;
    order: 4;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  header nav.active {
    max-height: 500px;
    margin-top: 15px;
  }

  header nav ul {
    flex-direction: column;
    gap: 15px;
    align-items: flex-start;
    padding: 20px 0;
  }

  header nav ul li {
    font-size: 0.9rem;
    width: 100%;
  }

  header nav ul li a {
    display: block;
    padding: 10px 0;
  }

  .container {
    padding: 100px 20px 30px;
  }

  .list {
    height: 60vh;
  }

  .item {
    flex-direction: column;
    gap: 20px;
    padding: 20px;
  }

  .product-img {
    width: 100%;
    height: 40%;
  }

  .product-img img {
    max-width: 60%;
    max-height: 100%;
  }

  .content {
    width: 100%;
    padding: 20px;
    text-align: center;
    gap: 15px;
  }

  .product-name {
    font-size: 2rem;
  }

  .description {
    font-size: 1rem;
  }

  .product-tag {
    font-size: 0.8rem;
  }

  .btn {
    padding: 12px 30px;
    font-size: 0.9rem;
    width: 100%;
  }

  .arrow-btn {
    width: 40px;
    height: 40px;
  }

  .arrow-btn#prev {
    left: 10px;
  }

  .arrow-btn#next {
    right: 10px;
  }

  .indicators {
    gap: 20px;
    margin-top: 20px;
  }

  .numbers {
    font-size: 1.2rem;
  }

  .dots {
    gap: 10px;
  }

  .circle {
    width: 150px;
    height: 150px;
  }
}

@media (max-width: 480px) {
  header {
    padding: 12px 15px;
  }

  .logo {
    font-size: 1.2rem;
  }

  .menu-toggle {
    width: 35px;
    height: 35px;
  }

  .menu-toggle span {
    width: 20px;
    height: 2px;
  }

  header nav ul {
    gap: 12px;
    font-size: 0.85rem;
    padding: 15px 0;
  }

  header nav ul li a {
    padding: 8px 0;
  }

  .container {
    padding: 80px 15px 20px;
  }

  .list {
    height: 50vh;
  }

  .item {
    padding: 15px;
    gap: 15px;
  }

  .product-img {
    height: 35%;
  }

  .product-img img {
    max-width: 70%;
  }

  .content {
    padding: 15px;
    gap: 12px;
  }

  .product-name {
    font-size: 1.5rem;
  }

  .description {
    font-size: 0.9rem;
  }

  .product-tag {
    font-size: 0.75rem;
    letter-spacing: 1px;
  }

  .btn {
    padding: 10px 25px;
    font-size: 0.85rem;
  }

  .arrow-btn {
    width: 35px;
    height: 35px;
  }

  .arrow-btn svg {
    width: 18px;
    height: 18px;
  }

  .indicators {
    gap: 15px;
    margin-top: 15px;
    flex-direction: column;
    align-items: center;
  }

  .numbers {
    font-size: 1rem;
  }

  .dots {
    gap: 8px;
  }

  .dot {
    width: 10px;
    height: 10px;
  }
}