/* Global reset and defaults */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: #f0f0f3;
  color: #333;
  line-height: 1.6;
  padding: 20px;
}

/* Header */
header {
  text-align: center;
  margin-bottom: 40px;
}

/* Packs list layout */
#packs-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
}

/* Glass-style card */
.pack-card {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 16px;
  padding: 20px;
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
  transition: transform 0.2s ease;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.pack-card:hover {
  transform: scale(1.05);
}

/* Card content */
.pack-card img {
  width: 70%;
  border-radius: 8px;
  margin-bottom: 15px;
}
.pack-card h2 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}
.pack-card p {
  font-size: 0.95rem;
  color: #555;
}

/* Enhanced navigation bar */
.navbar {
  background: linear-gradient(90deg, #4e54c8 0%, #6a82fb 100%);
  padding: 20px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2);
  border-radius: 0 0 12px 12px;
}
.navbar .brand {
  font-weight: 700;
  font-size: 1.5rem;
  color: #fff;
  letter-spacing: 1px;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}
.navbar .nav-toggle {
  display: none;
  font-size: 1.5rem;
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.5);
  padding: 6px 10px;
  border-radius: 50%;
  color: #fff;
  transition: background 0.3s ease, transform 0.3s ease;
  cursor: pointer;
}
.navbar .nav-toggle:hover {
  background: rgba(255, 255, 255, 0.4);
  transform: rotate(90deg);
}
.navbar ul.menu {
  list-style: none;
  display: flex;
  gap: 25px;
}
.navbar ul.menu li {
  position: relative;
}
.navbar ul.menu li a {
  text-decoration: none;
  color: #fff;
  padding: 8px 12px;
  border-radius: 4px;
  position: relative;
  overflow: hidden;
  transition: background 0.2s ease, color 0.2s ease;
}
.navbar ul.menu li a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  height: 2px;
  width: 0;
  background: #fff;
  transition: width 0.3s ease;
}
.navbar ul.menu li a:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
}
.navbar ul.menu li a:hover::after {
  width: 100%;
}
.navbar ul.menu li ul.submenu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: #fff;
  border-radius: 4px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  list-style: none;
  margin: 0;
  padding: 10px 0;
  min-width: 150px;
}
.navbar ul.menu li:hover ul.submenu {
  display: block;
}
.navbar ul.menu li ul.submenu li a {
  color: #333;
  padding: 8px 16px;
  display: block;
  white-space: nowrap;
}
.navbar ul.menu li ul.submenu li a:hover {
  background: #f0f0f0;
}
@media (max-width: 768px) {
  .navbar .nav-toggle {
    display: block;
  }
  .navbar ul.menu {
    flex-direction: column;
    display: none;
    width: 100%;
    background: linear-gradient(90deg, #4e54c8, #8f94fb);
    margin-top: 10px;
    padding: 10px 0;
  }
  .navbar ul.menu.menu-active {
    display: flex;
  }
  .navbar ul.menu li {
    width: 100%;
    text-align: center;
  }
  .navbar ul.menu li a {
    padding: 12px 0;
  }
}

/* Glassy navbar */
.navbar {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 1rem 2rem;
  border-radius: 16px;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.10);
}
@media (prefers-color-scheme: dark) {
  .navbar {
    background: rgba(0, 0, 0, 0.4);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
  }
  .navbar .submenu {
    background: rgba(0, 0, 0, 0.5);
  }
}

/* Hero banner */
.hero {
  background-image: url('https://via.placeholder.com/1920x600');
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  position: relative;
  height: 600px;
  border-radius: 16px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
  margin: 2rem 0;
}
.hero .overlay {
  background: rgba(0, 0, 0, 0.4);
  padding: 2rem;
  border-radius: 8px;
  max-width: 600px;
}
.hero h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
}
.hero p {
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
}
.hero .cta {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: #fff;
  color: #111;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  margin-right: 1rem;
}
.hero .cta.secondary {
  background: transparent;
  border: 1px solid #fff;
  color: #fff;
}