:root {
  --bg-dark: #0b0f1a;
  --bg-darker: #070a12;
  --bg-card: #131a2b;
  --bg-card-2: #1a2236;
  --accent: #4f8cff;
  --accent-2: #22d3ee;
  --accent-grad: linear-gradient(135deg, #4f8cff 0%, #22d3ee 100%);
  --text: #e8edf7;
  --text-dim: #9aa6c0;
  --text-mute: #6b7793;
  --border: #232c44;
  --green: #34d399;
  --amber: #fbbf24;
  --red: #f87171;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --light-bg: #f5f7fb;
  --light-card: #ffffff;
  --light-text: #1a2236;
  --light-dim: #5b6678;
  --light-border: #e6eaf2;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg-dark);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ---------- Top Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 32px;
  background: rgba(7,10,18,.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; letter-spacing: .3px; }
.brand .logo {
  width: 34px; height: 34px; border-radius: 9px;
  background: var(--accent-grad);
  display: grid; place-items: center; font-size: 18px;
}
.brand .accent { background: var(--accent-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.nav-links { display: flex; gap: 26px; font-size: 15px; color: var(--text-dim); }
.nav-links a:hover { color: var(--text); }
.nav-actions { display: flex; gap: 12px; align-items: center; }
.btn {
  border: none; cursor: pointer; font-size: 14px; font-weight: 600;
  padding: 10px 18px; border-radius: 10px; transition: .2s;
  font-family: inherit;
}
.btn-primary { background: var(--accent-grad); color: #04101f; }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 8px 20px rgba(79,140,255,.35); }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn.lg { padding: 14px 26px; font-size: 15px; border-radius: 12px; }
.btn-lang { background: transparent; color: var(--text); border: 1px solid var(--border); padding: 8px 14px; }
.btn-lang:hover { border-color: var(--accent); color: var(--accent); }
.light .btn-lang { color: var(--light-text); border-color: var(--light-border); }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: 80px 32px 70px;
  background:
    radial-gradient(900px 500px at 80% -10%, rgba(79,140,255,.25), transparent 60%),
    radial-gradient(700px 400px at 10% 110%, rgba(34,211,238,.18), transparent 60%),
    var(--bg-darker);
}
.hero-inner {
  max-width: 1180px; margin: 0 auto;
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 50px; align-items: center;
}
.hero-eyebrow { display: inline-block; font-size: 13px; font-weight: 700; padding: 6px 14px; border-radius: 20px; background: rgba(79,140,255,.12); color: var(--accent-2); border: 1px solid rgba(79,140,255,.25); margin-bottom: 20px; }
.hero-copy h1 { font-size: 46px; line-height: 1.15; font-weight: 800; letter-spacing: -.5px; }
.hero-copy h1 .hl { background: var(--accent-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-sub { margin: 20px 0 30px; color: var(--text-dim); font-size: 17px; max-width: 520px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 36px; margin-top: 44px; }
.hero-stats div { display: flex; flex-direction: column; }
.hero-stats b { font-size: 28px; font-weight: 800; }
.hero-stats span { font-size: 13px; color: var(--text-mute); }
.hero-visual { display: grid; place-items: center; }
.price-strip { width: 100%; max-width: 360px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 10px 18px; box-shadow: var(--shadow); }
.ps-row { display: flex; justify-content: space-between; align-items: center; padding: 14px 0; border-bottom: 1px solid var(--border); font-size: 14px; color: var(--text-dim); }
.ps-row:last-child { border-bottom: none; }
.ps-row b { color: var(--accent-2); font-size: 16px; font-weight: 800; }

/* ---------- Section ---------- */
.section { max-width: 1180px; margin: 0 auto; padding: 70px 32px; }
.section-head { text-align: center; margin-bottom: 44px; }
.section-head .eyebrow { color: var(--accent-2); font-weight: 700; font-size: 13px; letter-spacing: 2px; text-transform: uppercase; }
.section-head h2 { font-size: 34px; font-weight: 800; margin-top: 8px; }
.section-head p { color: var(--text-dim); margin-top: 10px; }

/* ---------- Category cards ---------- */
.cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cat-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px 22px; transition: .2s; cursor: pointer; display: flex; flex-direction: column;
}
.cat-card:hover { transform: translateY(-4px); border-color: var(--accent); box-shadow: var(--shadow); }
.cat-card .cat-ic { width: 56px; height: 56px; border-radius: 14px; background: rgba(79,140,255,.12); display: grid; place-items: center; font-size: 28px; margin-bottom: 16px; }
.cat-card h3 { margin: 0 0 6px; font-size: 18px; }
.cat-card p { color: var(--text-dim); font-size: 13px; flex: 1; }
.cat-card .cat-foot { margin-top: 16px; font-size: 14px; font-weight: 700; color: var(--accent-2); }
.cat-card .cat-foot span { float: right; color: var(--text-mute); }

/* ---------- Hot lots ---------- */
.hot-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.hot-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; transition: .2s; cursor: pointer; }
.hot-card:hover { transform: translateY(-4px); border-color: var(--accent); box-shadow: var(--shadow); }
.hot-thumb { width: 100%; aspect-ratio: 16/10; border-radius: 12px; background: linear-gradient(135deg,#16223c,#0c1322); display: grid; place-items: center; font-size: 46px; margin-bottom: 16px; border: 1px solid var(--border); }
.hot-name { font-weight: 700; font-size: 16px; }
.hot-meta { color: var(--text-mute); font-size: 13px; margin: 6px 0 14px; }
.hot-bottom { display: flex; justify-content: space-between; align-items: center; }
.hot-bottom .price { color: var(--accent-2); font-weight: 800; font-size: 20px; }
.hot-bottom .moq { color: var(--text-mute); font-size: 12px; }

/* ---------- CTA card ---------- */
.cta-card { background: var(--accent-grad); color: #04101f; border-radius: 22px; padding: 56px 32px; }
.cta-card h2 { font-size: 32px; font-weight: 800; }
.cta-card p { margin: 12px 0 24px; opacity: .8; }
.cta-card .btn-primary { background: #04101f; color: #fff; }

/* ---------- Features ---------- */
.feat-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.feat {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px 24px;
}
.feat .ico { width: 46px; height: 46px; border-radius: 12px; background: rgba(79,140,255,.12); display: grid; place-items: center; font-size: 22px; margin-bottom: 16px; }
.feat h3 { font-size: 18px; margin-bottom: 8px; }
.feat p { color: var(--text-dim); font-size: 14px; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--border); padding: 40px 32px; color: var(--text-mute); font-size: 14px; text-align: center; }

/* ---------- Light theme (Sylius-like) ---------- */
.light { background: var(--light-bg); color: var(--light-text); }
.light .nav { background: rgba(255,255,255,.9); border-bottom: 1px solid var(--light-border); }
.light .nav-links { color: var(--light-dim); }
.light .btn-ghost { color: var(--light-text); border-color: var(--light-border); }
.light .section-head p { color: var(--light-dim); }
.light .footer { border-top: 1px solid var(--light-border); color: var(--light-dim); }

/* ---------- Product list (light) ---------- */
.pl-wrap { display: grid; grid-template-columns: 260px 1fr; gap: 28px; max-width: 1180px; margin: 0 auto; padding: 30px 32px 70px; }
.filter {
  background: var(--light-card); border: 1px solid var(--light-border); border-radius: var(--radius);
  padding: 22px; height: fit-content; position: sticky; top: 80px;
}
.filter h4 { font-size: 15px; margin: 18px 0 10px; }
.filter h4:first-child { margin-top: 0; }
.filter label { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--light-dim); padding: 5px 0; cursor: pointer; }
.filter input[type=checkbox] { accent-color: var(--accent); width: 16px; height: 16px; }
.filter .range { width: 100%; accent-color: var(--accent); }
.filter .range-val { font-size: 13px; color: var(--light-dim); }
.pl-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.pl-top .count { color: var(--light-dim); font-size: 14px; }
.pl-top select { padding: 8px 12px; border-radius: 8px; border: 1px solid var(--light-border); font-family: inherit; }
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.p-card {
  background: var(--light-card); border: 1px solid var(--light-border); border-radius: var(--radius);
  padding: 18px; transition: .2s; cursor: pointer; display: flex; flex-direction: column;
}
.p-card:hover { transform: translateY(-4px); box-shadow: 0 12px 28px rgba(20,40,80,.1); border-color: var(--accent); }
.p-card .thumb { height: 120px; border-radius: 10px; background: linear-gradient(135deg,#eef3ff,#e3f7fb); display: grid; place-items: center; font-size: 50px; margin-bottom: 14px; }
.p-card .brand-badge { font-size: 11px; color: var(--accent); font-weight: 700; text-transform: uppercase; letter-spacing: .5px; }
.p-card h3 { font-size: 15px; margin: 4px 0 8px; line-height: 1.35; }
.p-card .sku { font-size: 11px; color: var(--light-dim); margin-bottom: 8px; font-family: ui-monospace, monospace; }
.p-card .attrs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; }
.p-card .attr { font-size: 11px; padding: 3px 8px; border-radius: 6px; background: #f0f3f9; color: var(--light-dim); }
.p-card .attr.oled { background: #e7f0ff; color: #2563eb; }
.p-card .attr.orig { background: #e6f7ef; color: #059669; }
.p-card .bottom { margin-top: auto; display: flex; justify-content: space-between; align-items: center; }
.p-card .price { font-size: 20px; font-weight: 800; color: var(--light-text); }
.p-card .price small { font-size: 12px; color: var(--light-dim); font-weight: 500; }
.p-card .stock { font-size: 12px; color: var(--green); }
.p-card .stock.low { color: var(--amber); }
.p-card .stock.out { color: var(--red); }
.p-card .add { border: 1px solid var(--accent); color: var(--accent); background: transparent; border-radius: 8px; padding: 6px 12px; font-size: 13px; cursor: pointer; font-weight: 600; }
.p-card .add:hover { background: var(--accent); color: #fff; }

/* ---------- Quote form ---------- */
.quote-wrap { max-width: 1180px; margin: 0 auto; padding: 30px 32px 70px; }
.quote-box { background: var(--light-card); border: 1px solid var(--light-border); border-radius: var(--radius); padding: 28px; }
.quote-cols { display: grid; grid-template-columns: 320px 1fr; gap: 28px; }
.quote-info h3, .quote-products h3 { margin: 0 0 16px; font-size: 17px; }
.quote-info .field { margin-bottom: 14px; }
.quote-products { overflow-x: auto; }
.quote-table { width: 100%; border-collapse: collapse; margin-bottom: 20px; }
.quote-table th, .quote-table td { text-align: left; padding: 12px 10px; border-bottom: 1px solid var(--light-border); font-size: 14px; }
.quote-table th { color: var(--light-dim); font-weight: 600; }
.quote-table input[type=number] { width: 80px; padding: 6px 8px; border: 1px solid var(--light-border); border-radius: 6px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 10px; }
.form-grid .full { grid-column: 1 / -1; }
.field label { display: block; font-size: 13px; color: var(--light-dim); margin-bottom: 6px; font-weight: 600; }
.field input, .field textarea { width: 100%; padding: 11px 13px; border: 1px solid var(--light-border); border-radius: 9px; font-family: inherit; font-size: 14px; }
.field textarea { resize: vertical; min-height: 80px; }
.quote-summary { background: #f7f9fc; border-radius: 10px; padding: 16px; margin: 18px 0; font-size: 14px; }
.quote-summary .line { display: flex; justify-content: space-between; padding: 4px 0; }
.quote-summary .total { font-weight: 800; font-size: 18px; border-top: 1px solid var(--light-border); margin-top: 8px; padding-top: 8px; }

/* ---------- Screen Finder (dark) ---------- */
.dark-finder { background: var(--bg-darker); color: var(--text); }
.dark-finder .section-head h2 { color: var(--text); }
.finder-wrap { display: grid; grid-template-columns: 280px 1fr; gap: 28px; max-width: 1180px; margin: 0 auto; padding: 30px 32px 70px; }
.finder-side { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; position: sticky; top: 80px; height: fit-content; }
.finder-side h4 { margin: 16px 0 10px; font-size: 14px; color: var(--text-dim); }
.finder-side h4:first-child { margin-top: 0; }
.finder-side label { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text-dim); padding: 5px 0; cursor: pointer; }
.finder-side input[type=checkbox] { accent-color: var(--accent); width: 16px; height: 16px; }
.finder-side .range { width: 100%; accent-color: var(--accent); }
.finder-side .range-val { font-size: 13px; color: var(--text-dim); }
.finder-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.p-card.dark { background: var(--bg-card); border-color: var(--border); }
.p-card.dark .thumb { background: linear-gradient(135deg,#1c2740,#0c1322); }
.p-card.dark h3 { color: var(--text); }
.p-card.dark .price { color: var(--accent-2); }
.p-card.dark .stock { color: var(--green); }
.p-card.dark .stock.low { color: var(--amber); }
.p-card.dark .stock.out { color: var(--red); }

/* ---------- Dark brand / about ---------- */
.dark-brand { background: var(--bg-darker); color: var(--text); }
.brand-hero { position: relative; overflow: hidden; padding: 110px 32px 90px; background: radial-gradient(900px 500px at 70% -10%, rgba(79,140,255,.22), transparent 60%), var(--bg-darker); }
.brand-hero-inner { max-width: 820px; margin: 0 auto; text-align: center; }
.brand-hero h1 { font-size: 52px; font-weight: 800; letter-spacing: -.5px; }
.brand-hero .hero-sub { margin: 22px auto 32px; color: var(--text-dim); font-size: 18px; max-width: 620px; }
.brand-hero .hero-cta { justify-content: center; }
.feat.dark { background: var(--bg-card); border-color: var(--border); }
.feat.dark h3 { color: var(--text); }
.feat.dark p { color: var(--text-dim); }
.cta-card.dark { background: var(--bg-card); border: 1px solid var(--border); color: var(--text); }
.cta-card.dark h2 { color: var(--text); }
.cta-card.dark p { color: var(--text-dim); }

/* ---------- Dashboard ---------- */
.dash-body { background: #f4f6fb; }
.dash-layout { display: grid; grid-template-columns: 230px 1fr; min-height: 100vh; }
.dash-side { background: #0e1626; color: #cdd6e4; padding: 24px 16px; position: sticky; top: 0; height: 100vh; }
.dash-logo { font-size: 20px; font-weight: 800; color: #fff; margin-bottom: 28px; padding-left: 8px; }
.dash-logo span { color: var(--accent-2); }
.dash-nav { display: flex; flex-direction: column; gap: 4px; }
.dash-nav a { display: block; padding: 11px 12px; border-radius: 9px; color: #aab4c5; text-decoration: none; font-size: 14px; cursor: pointer; }
.dash-nav a:hover { background: rgba(255,255,255,.06); color: #fff; }
.dash-nav a.active { background: var(--accent-grad); color: #04101f; font-weight: 700; }
.dash-main { padding: 28px 32px 60px; }
.dash-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 24px; }
.dash-head h1 { font-size: 26px; }
.dash-date { color: var(--light-dim); font-size: 14px; }
.stat-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; margin-bottom: 28px; }
.stat { background: var(--light-card); border: 1px solid var(--light-border); border-radius: var(--radius); padding: 22px; }
.stat .ico { font-size: 22px; }
.stat .num { font-size: 32px; font-weight: 800; margin: 8px 0 2px; }
.stat .lbl { color: var(--light-dim); font-size: 13px; }
.stat .trend { font-size: 12px; color: var(--green); margin-top: 6px; }
.dash-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 22px; }
.panel { background: var(--light-card); border: 1px solid var(--light-border); border-radius: var(--radius); padding: 22px; }
.panel h3 { font-size: 16px; margin-bottom: 16px; }
.chart { display: flex; align-items: flex-end; gap: 8px; height: 180px; padding-top: 10px; }
.chart .bar { flex: 1; background: var(--accent-grad); border-radius: 6px 6px 0 0; min-height: 6px; transition: .3s; }
.chart .bar:hover { opacity: .8; }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { text-align: left; padding: 11px 8px; border-bottom: 1px solid var(--light-border); font-size: 13px; }
.table th { color: var(--light-dim); font-weight: 600; }
.badge { font-size: 11px; padding: 3px 9px; border-radius: 20px; }
.badge.ok { background: #e6f7ef; color: #059669; }
.badge.low { background: #fef3c7; color: #d97706; }
.badge.out { background: #fee2e2; color: #dc2626; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; bottom: 30px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--accent-grad); color: #04101f; font-weight: 700; padding: 12px 22px;
  border-radius: 12px; box-shadow: var(--shadow); opacity: 0; pointer-events: none; transition: .3s; z-index: 100;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

@media (max-width: 900px) {
  .hero-grid, .cat-grid, .feat-grid, .product-grid, .finder-grid, .stat-grid, .dash-grid, .pl-wrap, .finder-wrap { grid-template-columns: 1fr !important; }
  .nav-links { display: none; }
  .hero h1 { font-size: 34px; }
  .form-grid { grid-template-columns: 1fr; }
}