/* ============================================================
   TechNexus Computers — public site stylesheet
   Design: dark "circuit board" tech palette with a neon-teal
   accent, monospace accents for SKUs/specs (feels like a spec
   sheet), Space Grotesk for display type.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --bg: #0b0f14;
  --bg-elevated: #121821;
  --bg-card: #151d28;
  --border: #232e3d;
  --border-light: #2c3a4d;
  --text: #e9edf2;
  --text-dim: #98a5b5;
  --text-faint: #61707f;
  --accent: #35e0c9;
  --accent-dim: #1c9f8f;
  --accent-soft: rgba(53, 224, 201, 0.12);
  --warn: #f5b942;
  --danger: #f0554e;
  --ok: #4ade80;
  --radius: 10px;
  --radius-lg: 16px;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
  --header-h: 68px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; }

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; margin: 0 0 0.5em; letter-spacing: -0.01em; }
.mono { font-family: var(--font-mono); }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* Circuit-trace background texture on the body, subtle */
body {
  background-image:
    radial-gradient(circle at 15% 8%, rgba(53, 224, 201, 0.06), transparent 40%),
    radial-gradient(circle at 85% 0%, rgba(53, 224, 201, 0.04), transparent 35%);
  background-attachment: fixed;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(11, 15, 20, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; gap: 28px; width: 100%; }
.logo { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 700; font-size: 1.25rem; color: var(--text); flex-shrink: 0; }
.logo .mark { color: var(--accent); font-size: 1.4rem; line-height: 1; }
.logo .tag { display: block; font-family: var(--font-mono); font-size: 0.6rem; font-weight: 400; color: var(--text-faint); letter-spacing: 0.12em; margin-top: -2px; }

.main-nav { display: flex; gap: 22px; flex: 1; }
.main-nav a { font-size: 0.92rem; color: var(--text-dim); font-weight: 500; padding: 6px 0; border-bottom: 2px solid transparent; transition: color .15s, border-color .15s; }
.main-nav a:hover, .main-nav a.active { color: var(--text); border-color: var(--accent); }

.header-search { position: relative; flex: 1; max-width: 320px; }
.header-search input {
  width: 100%; padding: 9px 14px 9px 36px; border-radius: 999px; border: 1px solid var(--border-light);
  background: var(--bg-elevated); color: var(--text); font-size: 0.88rem; outline: none;
  transition: border-color .15s;
}
.header-search input:focus { border-color: var(--accent); }
.header-search svg { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); width: 15px; height: 15px; color: var(--text-faint); }

.header-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.btn-whatsapp-mini {
  display: inline-flex; align-items: center; gap: 6px; background: #1fae60; color: #fff; padding: 8px 14px;
  border-radius: 999px; font-size: 0.85rem; font-weight: 600; border: none;
}
.btn-whatsapp-mini:hover { background: #189752; }
.hamburger { display: none; background: none; border: none; color: var(--text); font-size: 1.5rem; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: 999px; font-weight: 600; font-size: 0.92rem; border: 1px solid transparent;
  transition: transform .12s ease, background .15s, border-color .15s, color .15s;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--accent); color: #06231f; }
.btn-primary:hover { background: #4ee9d3; }
.btn-outline { border-color: var(--border-light); color: var(--text); background: transparent; }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-whatsapp { background: #1fae60; color: #fff; }
.btn-whatsapp:hover { background: #189752; }
.btn-sm { padding: 8px 16px; font-size: 0.82rem; }
.btn-block { width: 100%; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 90px 0 70px;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: center; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-mono); font-size: 0.75rem;
  color: var(--accent); background: var(--accent-soft); border: 1px solid rgba(53,224,201,0.3); padding: 6px 12px;
  border-radius: 999px; margin-bottom: 20px; letter-spacing: 0.04em;
}
.hero h1 { font-size: clamp(2.2rem, 4.2vw, 3.4rem); line-height: 1.08; margin-bottom: 18px; }
.hero h1 .accent { color: var(--accent); }
.hero p.lead { color: var(--text-dim); font-size: 1.08rem; max-width: 480px; margin-bottom: 30px; }
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 32px; margin-top: 44px; }
.hero-stats div strong { display: block; font-family: var(--font-display); font-size: 1.5rem; color: var(--text); }
.hero-stats div span { font-size: 0.8rem; color: var(--text-faint); }

.hero-visual {
  position: relative; background: linear-gradient(155deg, var(--bg-card), var(--bg-elevated));
  border: 1px solid var(--border-light); border-radius: var(--radius-lg); padding: 32px;
  box-shadow: var(--shadow);
}
.hero-visual::before {
  content: ''; position: absolute; inset: 0; border-radius: var(--radius-lg);
  background: radial-gradient(circle at top right, rgba(53,224,201,0.15), transparent 60%); pointer-events: none;
}
.spec-line { display: flex; justify-content: space-between; padding: 10px 0; border-bottom: 1px dashed var(--border-light); font-family: var(--font-mono); font-size: 0.82rem; }
.spec-line:last-child { border-bottom: none; }
.spec-line span:first-child { color: var(--text-faint); }
.spec-line span:last-child { color: var(--accent); }

/* ---------- Section headers ---------- */
.section { padding: 64px 0; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 30px; gap: 20px; flex-wrap: wrap; }
.section-head .eyebrow { font-family: var(--font-mono); font-size: 0.75rem; color: var(--accent); letter-spacing: 0.08em; margin-bottom: 6px; display: block; }
.section-head h2 { font-size: 1.85rem; margin: 0; }
.section-head p { color: var(--text-dim); margin: 6px 0 0; max-width: 480px; }
.view-all { font-size: 0.88rem; font-weight: 600; color: var(--accent); white-space: nowrap; display: inline-flex; align-items: center; gap: 4px; }

/* ---------- Category grid ---------- */
.cat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 14px; }
.cat-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 16px;
  text-align: center; transition: border-color .15s, transform .15s;
}
.cat-card:hover { border-color: var(--accent); transform: translateY(-3px); }
.cat-card .icon { font-size: 1.7rem; margin-bottom: 10px; display: block; }
.cat-card .name { font-size: 0.85rem; font-weight: 600; }

/* ---------- Product cards ---------- */
.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 18px; }
.product-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden;
  display: flex; flex-direction: column; transition: border-color .15s, transform .15s;
}
.product-card:hover { border-color: var(--border-light); transform: translateY(-4px); }
.product-thumb {
  aspect-ratio: 4/3; background: var(--bg-elevated); display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden; border-bottom: 1px solid var(--border);
}
.product-thumb img { width: 100%; height: 100%; object-fit: contain; padding: 14px; }
.product-thumb .placeholder-icon { font-size: 2.4rem; opacity: 0.35; }
.badge { position: absolute; top: 10px; left: 10px; padding: 4px 10px; border-radius: 999px; font-size: 0.68rem; font-weight: 700; letter-spacing: 0.03em; }
.badge-sale { background: var(--danger); color: #fff; }
.badge-featured { background: var(--accent); color: #06231f; }
.product-body { padding: 16px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.product-cat { font-family: var(--font-mono); font-size: 0.68rem; color: var(--text-faint); text-transform: uppercase; letter-spacing: 0.06em; }
.product-name { font-size: 0.95rem; font-weight: 600; line-height: 1.3; min-height: 2.5em; }
.product-name a { transition: color .15s; }
.product-name a:hover { color: var(--accent); }
.product-price-row { display: flex; align-items: baseline; gap: 8px; margin-top: 2px; }
.price-now { font-family: var(--font-display); font-size: 1.2rem; font-weight: 700; color: var(--accent); }
.price-was { font-size: 0.82rem; color: var(--text-faint); text-decoration: line-through; }
.stock-row { font-size: 0.78rem; display: flex; align-items: center; gap: 6px; }
.stock-dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.stock-in { color: var(--ok); } .stock-in .stock-dot { background: var(--ok); }
.stock-low { color: var(--warn); } .stock-low .stock-dot { background: var(--warn); }
.stock-out { color: var(--danger); } .stock-out .stock-dot { background: var(--danger); }
.product-actions { display: flex; gap: 8px; margin-top: auto; padding-top: 6px; }
.product-actions .btn { flex: 1; padding: 9px 10px; font-size: 0.8rem; }

/* ---------- Filters / product listing ---------- */
.listing-layout { display: grid; grid-template-columns: 240px 1fr; gap: 32px; align-items: start; }
.filters-panel { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 20px; position: sticky; top: calc(var(--header-h) + 16px); }
.filters-panel h3 { font-size: 0.95rem; margin-bottom: 14px; }
.filter-group { margin-bottom: 20px; }
.filter-group:last-child { margin-bottom: 0; }
.filter-group label.group-label { display: block; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-faint); margin-bottom: 10px; font-weight: 600; }
.filter-option { display: flex; align-items: center; gap: 8px; font-size: 0.86rem; padding: 5px 0; color: var(--text-dim); cursor: pointer; }
.filter-option input { accent-color: var(--accent); }
.filter-option:hover { color: var(--text); }
.price-range-row { display: flex; gap: 8px; align-items: center; }
.price-range-row input { width: 100%; padding: 7px 8px; border-radius: 6px; border: 1px solid var(--border-light); background: var(--bg-elevated); color: var(--text); font-size: 0.82rem; }

.listing-toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; gap: 12px; flex-wrap: wrap; }
.result-count { color: var(--text-dim); font-size: 0.88rem; }
.sort-select { padding: 8px 12px; border-radius: 8px; border: 1px solid var(--border-light); background: var(--bg-card); color: var(--text); font-size: 0.85rem; }

.empty-state { text-align: center; padding: 60px 20px; color: var(--text-dim); }
.empty-state .icon { font-size: 2.4rem; margin-bottom: 12px; }

/* ---------- Product detail ---------- */
.pdp-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.pdp-image { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); aspect-ratio: 1; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.pdp-image img { width: 100%; height: 100%; object-fit: contain; padding: 30px; }
.pdp-image .placeholder-icon { font-size: 5rem; opacity: 0.3; }
.breadcrumb { font-size: 0.82rem; color: var(--text-faint); margin-bottom: 22px; }
.breadcrumb a:hover { color: var(--accent); }
.pdp-brand { font-family: var(--font-mono); font-size: 0.78rem; color: var(--accent); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 8px; }
.pdp-title { font-size: 1.8rem; margin-bottom: 10px; }
.pdp-sku { font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-faint); margin-bottom: 20px; }
.pdp-price-block { display: flex; align-items: baseline; gap: 12px; margin-bottom: 6px; }
.pdp-price-block .price-now { font-size: 2rem; }
.pdp-stock { margin-bottom: 24px; }
.pdp-actions { display: flex; gap: 12px; margin-bottom: 32px; flex-wrap: wrap; }
.pdp-actions .btn { padding: 13px 24px; }
.pdp-section { border-top: 1px solid var(--border); padding-top: 22px; margin-top: 22px; }
.pdp-section h3 { font-size: 1rem; margin-bottom: 12px; }
.pdp-section p { color: var(--text-dim); font-size: 0.92rem; }
.spec-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.spec-table tr { border-bottom: 1px solid var(--border); }
.spec-table td { padding: 10px 0; }
.spec-table td:first-child { color: var(--text-faint); width: 40%; font-family: var(--font-mono); font-size: 0.82rem; }

/* ---------- Services ---------- */
.services-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 18px; }
.service-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 26px; }
.service-card .icon { font-size: 1.8rem; margin-bottom: 14px; display: block; }
.service-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
.service-card p { color: var(--text-dim); font-size: 0.88rem; margin-bottom: 18px; min-height: 2.6em; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 48px; align-items: start; }
.contact-info-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px; }
.contact-row { display: flex; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--border); }
.contact-row:last-child { border-bottom: none; }
.contact-row .icon { font-size: 1.2rem; flex-shrink: 0; width: 28px; }
.contact-row strong { display: block; font-size: 0.85rem; margin-bottom: 3px; }
.contact-row span, .contact-row a { color: var(--text-dim); font-size: 0.88rem; }
.map-embed { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); margin-top: 20px; }
.map-embed iframe { display: block; width: 100%; height: 220px; border: 0; filter: grayscale(0.3) invert(0.92) contrast(0.9); }

.form-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px; }
.form-row { margin-bottom: 16px; }
.form-row label { display: block; font-size: 0.82rem; font-weight: 600; margin-bottom: 6px; color: var(--text-dim); }
.form-row input, .form-row textarea, .form-row select {
  width: 100%; padding: 11px 14px; border-radius: 8px; border: 1px solid var(--border-light);
  background: var(--bg-elevated); color: var(--text); font-size: 0.9rem; outline: none; resize: vertical;
}
.form-row input:focus, .form-row textarea:focus, .form-row select:focus { border-color: var(--accent); }
.form-note { font-size: 0.82rem; padding: 10px 14px; border-radius: 8px; margin-top: 14px; display: none; }
.form-note.success { display: block; background: rgba(74,222,128,0.1); color: var(--ok); border: 1px solid rgba(74,222,128,0.3); }
.form-note.error { display: block; background: rgba(240,85,78,0.1); color: var(--danger); border: 1px solid rgba(240,85,78,0.3); }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); padding: 50px 0 26px; margin-top: 40px; background: var(--bg-elevated); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 36px; }
.footer-col h4 { font-size: 0.85rem; color: var(--text); margin-bottom: 14px; }
.footer-col p { color: var(--text-faint); font-size: 0.85rem; }
.footer-col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 9px; }
.footer-col a { color: var(--text-dim); font-size: 0.85rem; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid var(--border); padding-top: 22px; display: flex; justify-content: space-between; font-size: 0.8rem; color: var(--text-faint); flex-wrap: wrap; gap: 10px; }
.footer-bottom a { color: var(--text-faint); }

.whatsapp-float {
  position: fixed; bottom: 24px; right: 24px; width: 56px; height: 56px; border-radius: 50%; background: #1fae60;
  display: flex; align-items: center; justify-content: center; box-shadow: 0 6px 20px rgba(0,0,0,0.4); z-index: 200;
  font-size: 1.6rem; color: #fff; transition: transform .15s;
}
.whatsapp-float:hover { transform: scale(1.08); }

/* ---------- Skeleton / loading ---------- */
.skel { background: linear-gradient(90deg, var(--bg-card) 25%, var(--border) 37%, var(--bg-card) 63%); background-size: 400% 100%; animation: skel 1.4s ease infinite; border-radius: 8px; }
@keyframes skel { 0% { background-position: 100% 50%; } 100% { background-position: 0 50%; } }

/* ---------- Utility ---------- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }

@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
  .listing-layout { grid-template-columns: 1fr; }
  .filters-panel { position: static; }
  .pdp-grid { grid-template-columns: 1fr; gap: 28px; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .main-nav, .header-search { display: none; }
  .hamburger { display: block; }
  .main-nav.open { display: flex; position: absolute; top: var(--header-h); left: 0; right: 0; background: var(--bg-elevated); flex-direction: column; padding: 16px 24px; border-bottom: 1px solid var(--border); gap: 4px; }
  .header-search.open { display: block; position: absolute; top: var(--header-h); left: 0; right: 0; padding: 14px 24px; background: var(--bg-elevated); max-width: none; border-bottom: 1px solid var(--border); }
  .footer-grid { grid-template-columns: 1fr; }
  .hero { padding: 56px 0 40px; }
}