* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  font-family: 'Poppins', sans-serif;
  color: #f5f5f5;
  overflow-x: hidden;
  background: #0d0d0d;
  min-height: 100vh;
}

#background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: #0d0d0d;
  pointer-events: none;
}

header {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 12px 30px;
  background: #111;
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid #FFD700;
}

.header-center {
  display: flex;
  align-items: center;
  gap: 15px;
}

.logo {
  height: 60px;
  width: 60px;
  border-radius: 10px;
  box-shadow: 0 0 12px #FFD700;
  transition: 0.3s;
}

.logo:hover {
  transform: scale(1.05);
}

.site-title {
  font-size: 2.2rem;
  font-weight: 700;
  color: #FFD700;
  text-shadow: 0 0 12px #FFD700;
}

.header-buttons {
  position: absolute;
  right: 30px;
  display: flex;
  gap: 10px;
}

button {
  background: #FFD700;
  border: none;
  padding: 8px 20px;
  border-radius: 6px;
  font-weight: 700;
  font-size: 1rem;
  color: #111;
  cursor: pointer;
  transition: 0.3s;
}

button:hover {
  background: #e6c200;
  box-shadow: 0 0 10px #FFD700;
}

#sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 240px;
  height: 100vh;
  background: #111;
  padding-top: 100px;
  border-right: 1px solid #FFD700;
  overflow-y: auto;
  z-index: 5;
  transition: 0.3s;
}

#sidebar ul {
  list-style: none;
  padding: 0 10px;
}

#sidebar li a {
  display: block;
  color: #f5f5f5;
  padding: 12px 20px;
  text-decoration: none;
  font-weight: 600;
  border-radius: 8px;
  transition: 0.3s;
}

#sidebar li a:hover {
  background: #FFD700;
  color: #111;
}

section, footer {
  margin-left: 240px;
  padding: 80px 40px;
  text-align: center;
}

h2 {
  font-size: 2.4rem;
  color: #FFD700;
  margin-bottom: 25px;
}

p {
  font-size: 1.2rem;
  color: #ccc;
  line-height: 1.6;
}

.intro-highlights, .package-cards, .depo-cards {
  display: flex;
  justify-content: center;
  gap: 25px;
  flex-wrap: wrap;
}

.highlight-card, .package-card, .depo-card {
  background: #1a1a1a;
  border-radius: 12px;
  padding: 20px;
  width: 260px;
  box-shadow: 0 0 12px #FFD700;
  transition: 0.3s;
}

.highlight-card:hover, .package-card:hover, .depo-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 0 20px #FFD700;
}

.services .cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
}

.card {
  background: #1a1a1a;
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 0 12px #FFD700;
  transition: 0.3s;
}

.card:hover {
  transform: scale(1.05);
  box-shadow: 0 0 20px #FFD700;
}

.contact form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 500px;
  margin: 0 auto;
}

input, textarea {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid #FFD700;
  border-radius: 8px;
  background: #0d0d0d;
  color: #f5f5f5;
}

footer {
  background: #111;
  border-top: 1px solid #FFD700;
  text-align: center;
  padding: 30px 20px;
}

.footer-socials img {
  width: 35px;
  margin: 0 10px;
  transition: 0.3s;
}

.footer-socials img:hover {
  transform: scale(1.2);
}

img.monitoramento, img.firewall {
  width: 100%;
  max-width: 500px;
  height: auto;
  display: block;
  margin: 0 auto;
}

@media (max-width: 900px) {
  #sidebar {
    width: 180px;
  }
  section, footer {
    margin-left: 180px;
  }
}

@media (max-width: 700px) {
  #sidebar {
    display: none;
  }
  section, footer {
    margin-left: 0;
    padding: 60px 20px;
  }
  header {
    justify-content: space-between;
  }
  .site-title {
    font-size: 1.8rem;
  }
  .header-buttons {
    position: static;
    gap: 6px;
  }
  .intro-highlights, .package-cards, .depo-cards {
    flex-direction: column;
    align-items: center;
  }
  .highlight-card, .package-card, .depo-card {
    width: 90%;
    max-width: 320px;
  }
  .services .cards {
    grid-template-columns: 1fr;
  }
  img.monitoramento, img.firewall {
    max-width: 90%;
  }
}