:root {
  --bg: #080d18;
  --fg: #ecf4ff;
  --muted: #90a1bc;
  --card: rgba(18, 24, 40, 0.7);
  --border: rgba(120, 150, 205, 0.2);
  --primary: #00d4ff;
  --accent: #8f52ff;
}


* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; scroll-behavior: smooth; }
body {
  color: var(--fg);
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background:
    radial-gradient(760px 360px at 15% 10%, rgba(0, 212, 255, 0.15), transparent 70%),
    radial-gradient(760px 360px at 85% 85%, rgba(143, 82, 255, 0.15), transparent 70%),
    var(--bg);
}

.container { width: min(1200px, 92%); margin: 0 auto; }
a { color: inherit; text-decoration: none; }

.navbar {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 20;
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
  background: rgba(9, 13, 23, 0.75);
}
.nav-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 16px; position: relative; }
.brand { display: inline-flex; gap: 8px; align-items: center; font-weight: 800; }
.brand-icon { color: var(--primary); }
.text-gradient { background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.nav-links { display: flex; gap: 24px; color: var(--muted); }
.nav-links a:hover { color: var(--primary); }
.nav-actions { display: inline-flex; align-items: center; gap: 10px; }
.menu-btn {
  cursor: pointer;
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(20, 29, 47, 0.8);
  color: var(--fg);
  font-size: 20px;
  line-height: 1;
}
.cart-btn {
  cursor: pointer;
  display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid var(--border); border-radius: 999px; padding: 8px 12px;
  background: rgba(20, 29, 47, 0.8); color: var(--fg);
}
.cart-btn span { background: var(--primary); color: #042530; border-radius: 999px; font-size: 11px; font-weight: 800; padding: 2px 6px; }

.hero { padding: 112px 0 64px; }
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 28px; align-items: center; }
.glass { border: 1px solid var(--border); border-radius: 22px; background: var(--card); backdrop-filter: blur(6px); }
.badge { display: inline-flex; gap: 8px; align-items: center; border: 1px solid var(--border); border-radius: 999px; padding: 7px 12px; color: var(--primary); font-size: 12px; }
.badge::before { content: ""; width: 7px; height: 7px; border-radius: 99px; background: var(--primary); }
.hero h1 { margin: 16px 0; font-size: clamp(34px, 6vw, 72px); line-height: 0.95; }
.hero p { color: var(--muted); max-width: 55ch; line-height: 1.6; }
.hero-ctas { display: flex; gap: 12px; margin-top: 24px; }
.btn { display: inline-flex; align-items: center; justify-content: center; border-radius: 12px; padding: 11px 18px; font-weight: 700; border: 1px solid transparent; }
.btn-primary { background: var(--primary); color: #052733; box-shadow: 0 0 35px rgba(0, 212, 255, 0.25); }
.btn-secondary { background: rgba(16, 24, 40, 0.8); border-color: var(--border); }
.hero-stats { display: flex; gap: 24px; margin-top: 24px; }
.hero-stats strong { font-size: 22px; display: block; }
.hero-stats span { color: var(--muted); font-size: 12px; }
.hero-img { overflow: hidden; }
.hero-img img { width: 100%; display: block; animation: float 7s ease-in-out infinite; }

.section { padding: 20px 0 72px; }
.section-head { text-align: center; margin-bottom: 30px; }
.section-head small { color: var(--primary); letter-spacing: 0.12em; text-transform: uppercase; }
.section-head h2 { margin: 8px 0 10px; font-size: clamp(28px, 4vw, 52px); }
.section-head p { color: var(--muted); }

.product-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(215px, 1fr)); gap: 14px; }
.card { overflow: hidden; transition: transform .25s ease, border-color .25s ease; }
.card:hover { transform: translateY(-4px); border-color: rgba(0, 212, 255, 0.45); }
.card-media { aspect-ratio: 1 / 1; overflow: hidden; position: relative; }
.card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.card:hover .card-media img { transform: scale(1.07); }
.tag { position: absolute; top: 10px; left: 10px; background: var(--primary); color: #062733; border-radius: 999px; font-size: 10px; font-weight: 800; padding: 4px 9px; text-transform: uppercase; }
.card-body { padding: 14px; }
.rating { color: #ffd86d; letter-spacing: 1px; font-size: 12px; }
.card h3 { margin: 8px 0; font-size: 15px; }
.card h3:hover { color: var(--primary); }
.price-row { display: flex; align-items: center; justify-content: space-between; }
.price { font-weight: 800; font-size: 22px; }
.icon-btn { width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--border); background: rgba(15, 24, 39, 0.8); color: var(--primary); }
.icon-btn { cursor: pointer; }

.cart-overlay {
  position: fixed;
  inset: 0;
  background: rgba(3, 7, 14, 0.62);
  z-index: 24;
}
.cart-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: min(420px, 100%);
  height: 100vh;
  z-index: 25;
  background: rgba(10, 15, 26, 0.98);
  border-left: 1px solid var(--border);
  padding: 14px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  transform: translateX(100%);
  transition: transform .3s ease;
}
.cart-drawer.is-open { transform: translateX(0); }
.cart-drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 10px;
}
.cart-items {
  overflow: auto;
  margin: 10px 0;
  display: grid;
  gap: 10px;
  align-content: start;
}
.cart-item {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px;
  display: grid;
  grid-template-columns: 64px 1fr auto;
  gap: 10px;
  align-items: center;
}
.cart-item img {
  width: 64px;
  height: 64px;
  object-fit: cover;
  border-radius: 8px;
}
.cart-item p { margin: 2px 0; }
.cart-item .muted { color: var(--muted); font-size: 12px; }
.cart-empty {
  text-align: center;
  color: var(--muted);
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 20px;
}
.cart-footer {
  border-top: 1px solid var(--border);
  padding-top: 12px;
}
.cart-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.category-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
.cat { text-align: center; padding: 18px; }
.cat strong { display: block; margin-bottom: 6px; }
.cat span { color: var(--muted); font-size: 13px; }

.detail { padding: 108px 0 80px; }
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.back { color: var(--primary); display: inline-block; margin-bottom: 14px; }
.detail-media { overflow: hidden; }
.detail-media img { width: 100%; display: block; }
.kicker { color: var(--primary); text-transform: uppercase; font-size: 12px; letter-spacing: .12em; }
.detail h1 { margin: 10px 0; font-size: clamp(30px, 4.8vw, 52px); }
.detail .desc { color: var(--muted); line-height: 1.65; }
.features { list-style: none; padding: 0; margin: 18px 0 0; }
.features li { padding: 8px 0; border-bottom: 1px solid var(--border); }
.specs { margin-top: 24px; overflow: hidden; }
.spec-row { display: flex; justify-content: space-between; padding: 12px 14px; border-bottom: 1px solid var(--border); }
.spec-row:last-child { border-bottom: 0; }
.spec-row span:first-child { color: var(--muted); }

.not-found { min-height: 56vh; display: grid; place-items: center; text-align: center; padding-top: 72px; }
.not-found p { color: var(--muted); }

.checkout { padding: 108px 0 80px; }
.checkout-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.checkout-summary,
.checkout-form,
.checkout-empty,
.checkout-success {
  padding: 18px;
}
.checkout-summary h2,
.checkout-form h2 {
  margin-top: 0;
}
.checkout-list {
  display: grid;
  gap: 10px;
  margin-bottom: 14px;
}
.checkout-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 10px;
}
.checkout-item p { margin: 2px 0; }
.checkout-item .muted { color: var(--muted); font-size: 13px; }
.checkout-total {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 18px;
}
.checkout-form form {
  display: grid;
  gap: 10px;
}
.checkout-form label {
  display: grid;
  gap: 6px;
  font-size: 14px;
  color: var(--muted);
}
.checkout-form input {
  border: 1px solid var(--border);
  background: rgba(15, 24, 39, 0.8);
  color: var(--fg);
  border-radius: 10px;
  padding: 10px 12px;
  outline: none;
}
.checkout-form input:focus {
  border-color: var(--primary);
}
.form-error {
  margin: 4px 0;
  color: #ff8f8f;
  font-size: 13px;
}
.checkout-empty,
.checkout-success {
  text-align: center;
}
.checkout-empty p,
.checkout-success p {
  color: var(--muted);
}

.footer { border-top: 1px solid var(--border); padding: 20px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.footer p, .footer-links { color: var(--muted); font-size: 12px; }
.footer-links { display: flex; gap: 12px; }

@keyframes float {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

@media (max-width: 920px) {
  .hero-grid, .detail-grid, .checkout-grid { grid-template-columns: 1fr; }
  .menu-btn { display: inline-flex; align-items: center; justify-content: center; }
  .nav-links {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: rgba(10, 15, 26, 0.98);
    overflow: hidden;
  }
  .nav-links.is-open { display: flex; }
  .nav-links a { padding: 14px 16px; border-bottom: 1px solid var(--border); }
  .nav-links a:last-child { border-bottom: 0; }
  .footer-inner { flex-direction: column; }
  .cart-drawer { width: 100%; }
}