body {
  font-family: "Montserrat", Arial, sans-serif;
  margin: 0;
  background: url("images/wallpaper.jpg") no-repeat center center fixed;
  background-size: cover;
  color: #e0e6ef;
  position: relative;
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 20, 41, 0.85);
  z-index: -1;
}

header {
  background: rgba(13, 26, 51, 0.95);
  color: #ffffff;
  text-align: center;
  padding: 25px 10px;
  letter-spacing: 1px;
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.6);
  border-bottom: 1px solid #2a3f6d;
}

nav {
  background: rgba(17, 38, 79, 0.95);
  text-align: center;
  padding: 10px 0;
  border-top: 1px solid #1a2f55;
  border-bottom: 1px solid #1a2f55;
}

nav a {
  color: #cfd9e6;
  text-decoration: none;
  padding: 14px 22px;
  display: inline-block;
  text-transform: uppercase;
  font-weight: 500;
  letter-spacing: 0.6px;
  transition: all 0.3s ease;
}

nav a:hover,
nav a.active {
  background: rgba(77, 163, 255, 0.15);
  color: #4da3ff;
  border-radius: 4px;
}

main {
  max-width: 1000px;
  margin: 50px auto;
  background: rgba(15, 31, 61, 0.9);
  padding: 50px;
  border-radius: 16px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(6px);
}

h1,
h2,
h3 {
  color: #ffffff;
  letter-spacing: 1px;
}

h2 {
  border-bottom: 2px solid #4da3ff;
  padding-bottom: 8px;
  display: inline-block;
  margin-bottom: 25px;
}

.product-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 25px;
}

.product {
  flex: 1 1 calc(33% - 20px);
  background: rgba(18, 39, 79, 0.85);
  padding: 20px;
  border-radius: 12px;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product:hover {
  transform: translateY(-6px);
  box-shadow: 0 6px 18px rgba(77, 163, 255, 0.4);
}

.product img {
  width: 100%;
  border-radius: 8px;
  margin-bottom: 12px;
}

.price {
  font-weight: bold;
  color: #4da3ff;
  font-size: 1.1rem;
}

form input,
form textarea,
form button {
  width: 100%;
  padding: 12px;
  border-radius: 6px;
  border: 1px solid #2a3f6d;
  background: #0b1c38;
  color: #e0e6ef;
  margin-bottom: 15px;
  font-size: 0.95rem;
}

form input:focus,
form textarea:focus {
  outline: none;
  border-color: #4da3ff;
  box-shadow: 0 0 6px rgba(77, 163, 255, 0.4);
}

form button {
  background: linear-gradient(90deg, #4da3ff, #6db8ff);
  color: #0a1429;
  border: none;
  cursor: pointer;
  font-weight: 600;
  text-transform: uppercase;
  transition: all 0.3s ease;
}

form button:hover {
  background: linear-gradient(90deg, #6db8ff, #8dcaff);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(77, 163, 255, 0.4);
}

footer {
  background: rgba(13, 26, 51, 0.95);
  color: #a8b3c2;
  text-align: center;
  padding: 20px;
  font-size: 0.9rem;
  letter-spacing: 0.5px;
  border-top: 1px solid #1a2f55;
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.4);
}