:root {
  --bg: #0f1216;
  --surface: #171b22;
  --surface-2: #1e242e;
  --border: #2a323f;
  --text: #e7ecf3;
  --muted: #9aa6b6;
  --accent: #ff7a1a;
  --accent-2: #38bdf8;
  --green: #34d399;
  --radius: 14px;
  --shadow: 0 6px 24px rgba(0, 0, 0, 0.28);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
}

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

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

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(15, 18, 22, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  max-width: 1240px;
  margin: 0 auto;
  padding: 14px 24px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; }
.brand-mark {
  width: 34px; height: 34px;
  display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--accent), #ff9d4d);
  color: #1a1207; border-radius: 10px; font-size: 20px;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.05; font-size: 18px; }
.brand-text small { font-size: 10px; font-weight: 500; color: var(--muted); letter-spacing: 0.04em; }

.search {
  position: relative;
  flex: 1;
  display: flex;
  max-width: 720px;
}
.search input {
  flex: 1;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 11px 14px;
  border-radius: 10px 0 0 10px;
  font-size: 14px;
  outline: none;
}
.search input:focus { border-color: var(--accent); }
.search button {
  background: var(--accent);
  color: #1a1207;
  border: none;
  font-weight: 700;
  padding: 0 20px;
  border-radius: 0 10px 10px 0;
  cursor: pointer;
}
.search button:hover { filter: brightness(1.06); }

.search-suggest {
  position: absolute;
  top: calc(100% + 8px);
  left: 0; right: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  overflow: hidden;
  z-index: 60;
}
.suggest-item {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}
.suggest-item:last-child { border-bottom: none; }
.suggest-item:hover { background: var(--surface-2); }
.suggest-item img { width: 44px; height: 44px; border-radius: 8px; object-fit: cover; background: var(--surface-2); }
.suggest-item .s-name { font-size: 13px; font-weight: 600; }
.suggest-item .s-meta { font-size: 12px; color: var(--muted); }
.suggest-item .s-price { margin-left: auto; font-weight: 700; color: var(--accent); }
.suggest-foot { padding: 9px 14px; font-size: 12px; color: var(--muted); background: var(--surface-2); }

.cart { position: relative; font-size: 22px; }
.cart span {
  position: absolute; top: -6px; right: -8px;
  background: var(--accent); color: #1a1207;
  font-size: 10px; font-weight: 700;
  border-radius: 10px; padding: 1px 5px;
}

.cat-nav { border-top: 1px solid var(--border); overflow-x: auto; }
.cat-nav-inner {
  display: flex; gap: 4px;
  max-width: 1240px; margin: 0 auto; padding: 8px 20px;
  white-space: nowrap;
}
.cat-nav a {
  font-size: 13px; color: var(--muted);
  padding: 6px 12px; border-radius: 8px;
}
.cat-nav a:hover { color: var(--text); background: var(--surface); }
.cat-nav a.active { color: var(--accent); background: var(--surface); }

/* layout */
.page { max-width: 1240px; margin: 0 auto; padding: 28px 24px 60px; }
.section { margin-top: 40px; }
.section h2 { font-size: 22px; margin: 0 0 18px; }
.center { text-align: center; }
.lede { color: var(--muted); font-size: 16px; margin: 4px 0 18px; }
.crumbs { color: var(--muted); font-size: 13px; margin-bottom: 8px; }
.crumbs a:hover { color: var(--accent); }
.result-count { color: var(--muted); font-size: 13px; margin-bottom: 16px; }

/* hero */
.hero {
  border-radius: 20px;
  padding: 48px 40px;
  background:
    radial-gradient(1200px 300px at 15% -20%, rgba(255, 122, 26, 0.18), transparent),
    radial-gradient(900px 300px at 90% 120%, rgba(56, 189, 248, 0.16), transparent),
    var(--surface);
  border: 1px solid var(--border);
}
.hero h1 { font-size: 40px; margin: 0 0 10px; letter-spacing: -0.02em; }
.hero p { color: var(--muted); font-size: 17px; max-width: 620px; }
.hero-search { display: flex; max-width: 560px; margin: 22px 0 14px; }
.hero-search input {
  flex: 1; background: var(--bg); border: 1px solid var(--border);
  color: var(--text); padding: 13px 16px; border-radius: 12px 0 0 12px; outline: none; font-size: 15px;
}
.hero-search input:focus { border-color: var(--accent); }
.hero-search button {
  background: var(--accent); color: #1a1207; border: none; font-weight: 700;
  padding: 0 22px; border-radius: 0 12px 12px 0; cursor: pointer;
}
.hero-hints { font-size: 13px; color: var(--muted); display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.hero-hints a { background: var(--surface-2); border: 1px solid var(--border); padding: 4px 10px; border-radius: 20px; }
.hero-hints a:hover { border-color: var(--accent); color: var(--text); }

/* category cards */
.cat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 14px; }
.cat-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; text-align: center; transition: transform 0.12s, border-color 0.12s;
}
.cat-card:hover { transform: translateY(-3px); border-color: var(--accent); }
.cat-card-img img { width: 84px; height: 84px; margin: 0 auto 10px; border-radius: 12px; object-fit: cover; background: var(--surface-2); }
.cat-card-name { font-weight: 600; font-size: 14px; }
.cat-card-count { font-size: 12px; color: var(--muted); }

/* product grid */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column; transition: transform 0.12s, border-color 0.12s;
}
.card:hover { transform: translateY(-3px); border-color: var(--accent); }
.card-img { aspect-ratio: 4 / 3; background: var(--surface-2); }
.card-img img { width: 100%; height: 100%; object-fit: cover; }
.card-body { padding: 12px 14px 14px; display: flex; flex-direction: column; gap: 4px; flex: 1; }
.card-brand { font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); }
.card-name { font-weight: 600; font-size: 14px; line-height: 1.35; min-height: 38px; }
.card-meta { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--muted); }
.stars { color: var(--accent); letter-spacing: 1px; }
.stars-empty { color: var(--border); }
.card-foot { display: flex; align-items: center; justify-content: space-between; margin-top: auto; padding-top: 8px; }
.price { font-size: 18px; font-weight: 800; color: var(--text); }
.stock { font-size: 11px; font-weight: 600; }
.stock.in { color: var(--green); }
.stock.oos { color: #f87171; }

/* product page */
.product { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 36px; margin-top: 10px; }
.product-media { background: var(--surface); border: 1px solid var(--border); border-radius: 18px; overflow: hidden; }
.product-media img { width: 100%; height: 100%; object-fit: cover; }
.product-info h1 { font-size: 28px; margin: 6px 0 10px; }
.product-price { font-size: 32px; font-weight: 800; margin: 16px 0 6px; }
.stock-line { font-size: 14px; font-weight: 600; margin-bottom: 14px; }
.stock-line.in { color: var(--green); }
.stock-line.oos { color: #f87171; }
.product-desc { color: var(--muted); }
.buy-row { display: flex; gap: 12px; margin-top: 22px; }
.btn-buy { background: var(--accent); color: #1a1207; border: none; font-weight: 700; padding: 13px 26px; border-radius: 11px; cursor: pointer; font-size: 15px; }
.btn-buy:hover:not(:disabled) { filter: brightness(1.06); }
.btn-buy:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-alt { background: var(--surface-2); color: var(--text); border: 1px solid var(--border); font-weight: 600; padding: 13px 22px; border-radius: 11px; cursor: pointer; }
.btn-alt:hover { border-color: var(--accent); }

.specs { width: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.specs th, .specs td { text-align: left; padding: 11px 16px; border-bottom: 1px solid var(--border); font-size: 14px; }
.specs th { color: var(--muted); font-weight: 600; width: 40%; }
.specs tr:last-child th, .specs tr:last-child td { border-bottom: none; }

/* search page */
.ai-answer { background: var(--surface); border: 1px solid var(--border); border-left: 3px solid var(--accent-2); border-radius: var(--radius); padding: 16px 18px; margin-bottom: 22px; }
.ai-answer-head { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 8px; }
.ai-badge { background: var(--accent-2); color: #04222e; font-size: 11px; font-weight: 800; padding: 1px 7px; border-radius: 6px; }
.ai-answer-body { font-size: 15px; }
.typing::after { content: "▋"; animation: blink 1s steps(2) infinite; color: var(--accent-2); }
@keyframes blink { 50% { opacity: 0; } }
.empty-results { color: var(--muted); }

/* footer */
.site-footer { border-top: 1px solid var(--border); background: var(--surface); margin-top: 60px; }
.footer-inner { max-width: 1240px; margin: 0 auto; padding: 34px 24px; display: grid; grid-template-columns: 1.4fr 2fr; gap: 30px; }
.footer-inner p { color: var(--muted); font-size: 14px; max-width: 360px; }
.footer-cats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px 16px; align-content: start; }
.footer-cats a { color: var(--muted); font-size: 13px; }
.footer-cats a:hover { color: var(--accent); }
.footer-legal { border-top: 1px solid var(--border); padding: 16px 24px; text-align: center; color: var(--muted); font-size: 12px; }

@media (max-width: 820px) {
  .product { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .hero h1 { font-size: 30px; }
}