* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #0f0c29, #302b63);
  color: #fff;
  min-height: 100vh;
}
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  height: 70px;
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}
.logo { font-size: 1.5rem; font-weight: 800; letter-spacing: 1px; }
.menu { display: flex; list-style: none; gap: 8px; }
.menu > li { position: relative; }
.menu > li > a {
  display: block;
  padding: 12px 18px;
  color: #e5e7eb;
  text-decoration: none;
  border-radius: 8px;
  transition: background 0.25s ease, color 0.25s ease;
}
.menu > li > a:hover { background: rgba(108, 99, 255, 0.25); color: #fff; }
.arrow { font-size: 0.7rem; margin-left: 4px; }

.submenu {
  position: absolute;
  top: 100%;
  left: 0;
  list-style: none;
  background: #1e1e3a;
  border-radius: 10px;
  min-width: 190px;
  padding: 8px;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.45);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
  z-index: 100;
}
.dropdown:hover .submenu,
.dropdown:focus-within .submenu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.submenu li a {
  display: block;
  padding: 11px 14px;
  color: #c7cbe0;
  text-decoration: none;
  border-radius: 6px;
  transition: background 0.2s ease, padding-left 0.2s ease;
}
.submenu li a:hover { background: #6c63ff; color: #fff; padding-left: 20px; }

.hero { text-align: center; padding: 120px 20px; }
.hero h1 { font-size: 2.4rem; margin-bottom: 12px; }
.hero p { color: #b0b4cc; }

@media (max-width: 720px) {
  .navbar { padding: 0 16px; }
  .menu > li > a { padding: 12px 10px; font-size: 0.92rem; }
  .hero h1 { font-size: 1.8rem; }
}