:root {
  --bg: #0a0e17;
  --bg-2: #0f1623;
  --panel: #131c2b;
  --panel-2: #182536;
  --border: #22324a;
  --text: #e7eefc;
  --muted: #8aa0c0;
  --neon: #22d3ee;
  --neon-2: #c026d3;
  --neon-3: #34d399;
  --danger: #f87171;
  --radius: 14px;
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
  --max: 1180px;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(192, 38, 211, 0.18), transparent 60%),
    radial-gradient(1000px 500px at -10% 10%, rgba(34, 211, 238, 0.16), transparent 55%),
    var(--bg);
  color: var(--text);
  line-height: 1.55;
  min-height: 100vh;
}

a { color: var(--neon); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* ---------------- Header ---------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(10, 14, 23, 0.82);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 800; font-size: 20px; letter-spacing: 0.5px;
  color: var(--text); text-decoration: none;
}
.brand .logo {
  width: 34px; height: 34px; border-radius: 9px;
  background: linear-gradient(135deg, var(--neon), var(--neon-2));
  display: grid; place-items: center; font-weight: 900; color: #04121a;
}
.brand span b { color: var(--neon); }
.nav-links { display: flex; gap: 22px; align-items: center; }
.nav-links a { color: var(--muted); font-weight: 600; font-size: 15px; }
.nav-links a:hover, .nav-links a.active { color: var(--text); text-decoration: none; }

.cart-btn {
  position: relative; display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 14px; border-radius: 999px; border: 1px solid var(--border);
  background: var(--panel); color: var(--text); font-weight: 700; cursor: pointer;
}
.cart-btn:hover { border-color: var(--neon); }
.cart-count {
  min-width: 22px; height: 22px; padding: 0 6px; border-radius: 999px;
  background: linear-gradient(135deg, var(--neon), var(--neon-2));
  color: #04121a; font-size: 13px; font-weight: 800; display: grid; place-items: center;
}

/* ---------------- Hero ---------------- */
.hero { padding: 70px 0 40px; text-align: center; }
.hero .badge {
  display: inline-block; padding: 6px 14px; border-radius: 999px;
  border: 1px solid var(--border); background: var(--panel);
  color: var(--neon); font-weight: 700; font-size: 13px; margin-bottom: 18px;
}
.hero h1 {
  font-size: clamp(34px, 6vw, 60px); line-height: 1.05; margin: 0 0 16px;
  font-weight: 900; letter-spacing: -1px;
}
.hero h1 .glow {
  background: linear-gradient(90deg, var(--neon), var(--neon-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p { color: var(--muted); font-size: 18px; max-width: 640px; margin: 0 auto 28px; }
.btn-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: 12px; font-weight: 800; font-size: 15px;
  cursor: pointer; border: 1px solid transparent; transition: transform .08s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: linear-gradient(135deg, var(--neon), var(--neon-2)); color: #04121a; border: none;
  box-shadow: 0 8px 30px rgba(34, 211, 238, 0.35);
}
.btn-ghost { background: var(--panel); color: var(--text); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--neon); }
.btn-block { width: 100%; justify-content: center; }

/* ---------------- Sections ---------------- */
.section { padding: 48px 0; }
.section-head { display: flex; align-items: end; justify-content: space-between; margin-bottom: 26px; gap: 16px; flex-wrap: wrap; }
.section-head h2 { font-size: 28px; margin: 0; font-weight: 800; }
.section-head p { color: var(--muted); margin: 4px 0 0; }

.grid { display: grid; gap: 18px; }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 920px) { .grid.cols-3, .grid.cols-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr; } }

/* ---------------- Cards ---------------- */
.card {
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  border: 1px solid var(--border); border-radius: var(--radius); padding: 18px;
  box-shadow: var(--shadow); position: relative; display: flex; flex-direction: column;
  transition: border-color .15s ease, transform .15s ease;
}
.card:hover { border-color: var(--neon); transform: translateY(-3px); }
.card .tag {
  position: absolute; top: 14px; right: 14px; font-size: 11px; font-weight: 800;
  padding: 4px 9px; border-radius: 999px; background: rgba(52, 211, 153, 0.15); color: var(--neon-3);
  border: 1px solid rgba(52, 211, 153, 0.3);
}
.card .cat { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; }
.card h3 { margin: 6px 0 4px; font-size: 19px; }
.card .price { font-size: 22px; font-weight: 900; color: var(--neon); margin: 6px 0; }
.card .tagline { color: var(--muted); font-size: 14px; margin-bottom: 12px; flex: 1; }
.card .meta { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.chip {
  font-size: 11px; font-weight: 700; padding: 3px 9px; border-radius: 999px;
  background: var(--bg-2); border: 1px solid var(--border); color: var(--muted);
}

/* ---------------- Filters ---------------- */
.filters { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 22px; }
.filter {
  padding: 8px 16px; border-radius: 999px; border: 1px solid var(--border);
  background: var(--panel); color: var(--muted); font-weight: 700; cursor: pointer;
}
.filter.active, .filter:hover { border-color: var(--neon); color: var(--text); }

/* ---------------- Cart ---------------- */
.cart-layout { display: grid; grid-template-columns: 1.6fr 1fr; gap: 22px; }
@media (max-width: 860px) { .cart-layout { grid-template-columns: 1fr; } }
.cart-item {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 14px; border: 1px solid var(--border); border-radius: 12px; background: var(--panel); margin-bottom: 12px;
}
.cart-item .info { flex: 1; }
.cart-item .info h4 { margin: 0; font-size: 16px; }
.cart-item .info small { color: var(--muted); }
.qty { display: flex; align-items: center; gap: 8px; }
.qty button {
  width: 30px; height: 30px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--bg-2); color: var(--text); font-size: 18px; cursor: pointer;
}
.qty button:hover { border-color: var(--neon); }
.summary { background: linear-gradient(180deg, var(--panel), var(--panel-2)); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; position: sticky; top: 84px; }
.summary h3 { margin-top: 0; }
.summary .row { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px dashed var(--border); }
.summary .total { font-size: 24px; font-weight: 900; color: var(--neon); }
.empty { text-align: center; color: var(--muted); padding: 40px 0; }

/* ---------------- Forms ---------------- */
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; font-weight: 600; }
.field input, .field textarea, .field select {
  width: 100%; padding: 11px 13px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--bg-2); color: var(--text); font-size: 15px; outline: none;
}
.field input:focus, .field textarea:focus { border-color: var(--neon); }
.note { font-size: 13px; color: var(--muted); }
.alert { padding: 12px 14px; border-radius: 10px; margin-bottom: 14px; font-weight: 600; }
.alert.ok { background: rgba(52,211,153,.12); border: 1px solid rgba(52,211,153,.35); color: var(--neon-3); }
.alert.err { background: rgba(248,113,113,.12); border: 1px solid rgba(248,113,113,.35); color: var(--danger); }

/* ---------------- Footer ---------------- */
.site-footer { border-top: 1px solid var(--border); margin-top: 40px; padding: 30px 0; color: var(--muted); }
.site-footer .container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.features-row { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
@media (max-width: 760px){ .features-row { grid-template-columns: 1fr; } }
.feature {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px;
}
.feature .icon { font-size: 26px; }
.feature h4 { margin: 8px 0 6px; }
.feature p { color: var(--muted); margin: 0; font-size: 14px; }
.loading { text-align:center; color: var(--muted); padding: 40px 0; }