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

html, body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  background: #050713;
  color: #ffffff;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

/* ===== Layout ===== */
.container {
  max-width: 1200px;
  margin: auto;
  padding: 24px;
}

/* ===== Header ===== */
header {
  background: rgba(0,0,0,0.6);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  position: sticky;
  top: 0;
  z-index: 100;
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 1px;
}

nav a {
  margin-left: 20px;
  font-size: 14px;
  color: #cccccc;
}

nav a:hover {
  color: #00ffe1;
}

/* ===== Hero ===== */
.hero {
  padding: 80px 24px;
  text-align: center;
  background: radial-gradient(circle at top, rgba(0,255,225,0.15), transparent 60%);
}

.hero h1 {
  font-size: 42px;
  margin-bottom: 16px;
}

.hero p {
  color: #bbbbbb;
  max-width: 600px;
  margin: auto;
}

.hero .btn {
  margin-top: 24px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 12px;
  background: linear-gradient(135deg, #00ffe1, #a163ff);
  color: #000;
  font-weight: 700;
  border: none;
  cursor: pointer;
}

.btn:hover {
  opacity: 0.9;
}

/* ===== Products ===== */
.products {
  padding: 60px 0;
}

.products h2 {
  text-align: center;
  margin-bottom: 40px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.product-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 18px;
  padding: 20px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 40px rgba(0,0,0,0.5);
}

.product-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
}

.product-card p {
  font-size: 14px;
  color: #cccccc;
  margin-bottom: 14px;
}

.price {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
}

/* ===== Footer ===== */
footer {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 30px 0;
  text-align: center;
  font-size: 13px;
  color: #999999;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 32px;
  }

  nav {
    display: none;
  }
}