/* TRUE VALUE INFOTECH SOLUTIONS — spec-sheet / blueprint design system */

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

:root {
  --bg: #F4F7F9;
  --bg-panel: #FFFFFF;
  --ink: #121A22;
  --ink-muted: #576674;
  --ink-faint: #8B99A6;
  --accent: #1D5DA6;
  --accent-dark: #123E73;
  --amber: #C9711F;
  --green: #2F7D4F;
  --line: #CBD7E1;
  --line-strong: #9FB2C2;
  --radius: 3px;
  --maxw: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 40px 40px;
  background-attachment: fixed;
  color: var(--ink);
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--accent); }

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
}

.mono {
  font-family: 'IBM Plex Mono', monospace;
}

.tag {
  display: inline-block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--accent-dark);
  background: #E7EFF6;
  border: 1px solid var(--line-strong);
  padding: 3px 8px;
  border-radius: var(--radius);
}

h1, h2, h3 {
  font-family: 'Space Grotesk', 'IBM Plex Sans', sans-serif;
  font-weight: 700;
  color: var(--ink);
  margin: 0;
}

/* ---------- Header ---------- */

header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(244, 247, 249, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line-strong);
}

.headerbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 28px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  text-decoration: none;
}

.brand-mark {
  width: 30px;
  height: 30px;
  flex: none;
}

.brand-name {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 17px;
  color: var(--ink);
  letter-spacing: 0.01em;
}

.brand-sub {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--ink-faint);
  display: block;
  margin-top: 1px;
}

nav.mainnav {
  display: flex;
  gap: 28px;
}

nav.mainnav a {
  color: var(--ink-muted);
  text-decoration: none;
  font-size: 14.5px;
  font-weight: 500;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}

nav.mainnav a:hover {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  width: 38px;
  height: 34px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: '';
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
  position: relative;
}
.nav-toggle span::before { position: absolute; top: -6px; width: 18px; background: var(--ink); }
.nav-toggle span::after { position: absolute; top: 6px; width: 18px; background: var(--ink); }

/* ---------- Hero ---------- */

.hero {
  padding: 72px 0 56px;
  border-bottom: 1px solid var(--line-strong);
}

.hero .wrap {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  color: var(--accent-dark);
  margin-bottom: 14px;
}

.hero h1 {
  font-size: 44px;
  line-height: 1.12;
  letter-spacing: -0.01em;
  max-width: 15ch;
}

.hero p.lead {
  margin-top: 18px;
  font-size: 17px;
  color: var(--ink-muted);
  max-width: 46ch;
}

.hero-actions {
  margin-top: 30px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'IBM Plex Sans', sans-serif;
  font-weight: 600;
  font-size: 14.5px;
  padding: 12px 20px;
  border-radius: var(--radius);
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); }

.btn-outline {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn-outline:hover { border-color: var(--ink); }

.hero-meta {
  margin-top: 28px;
  display: flex;
  gap: 24px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12.5px;
  color: var(--ink-faint);
}

.hero-art {
  border: 1px solid var(--line-strong);
  background: var(--bg-panel);
  border-radius: var(--radius);
  padding: 18px;
}

/* ---------- Category strip ---------- */

.categories {
  padding: 44px 0;
  border-bottom: 1px solid var(--line-strong);
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 22px;
  gap: 16px;
  flex-wrap: wrap;
}

.section-head h2 { font-size: 24px; }

.section-index {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12.5px;
  color: var(--ink-faint);
}

.cat-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  overflow: hidden;
}

.cat-cell {
  padding: 18px 14px;
  border-right: 1px solid var(--line-strong);
  background: var(--bg-panel);
  text-decoration: none;
  color: var(--ink);
  transition: background 0.15s ease;
}
.cat-cell:last-child { border-right: none; }
.cat-cell:hover { background: #EAF1F7; }

.cat-cell .mono {
  display: block;
  font-size: 11px;
  color: var(--ink-faint);
  margin-bottom: 8px;
}

.cat-cell strong {
  display: block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.25;
}

/* ---------- Product / spec sections ---------- */

.catalog {
  padding: 52px 0;
}

.cat-block {
  padding: 40px 0;
  border-bottom: 1px solid var(--line);
}
.cat-block:first-child { padding-top: 0; }
.cat-block:last-child { border-bottom: none; }

.cat-block .section-head h2 { font-size: 22px; }
.cat-block .desc {
  color: var(--ink-muted);
  font-size: 14.5px;
  margin-top: 4px;
  max-width: 60ch;
}

.spec-table {
  margin-top: 20px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-panel);
}

.spec-row {
  display: grid;
  grid-template-columns: 1.4fr 2.2fr 1fr;
  gap: 16px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  align-items: center;
}
.spec-row:last-child { border-bottom: none; }

.spec-row .model {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 15px;
}
.spec-row .model .mono {
  display: block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11.5px;
  color: var(--ink-faint);
  font-weight: 400;
  margin-top: 3px;
}

.spec-row .specs {
  color: var(--ink-muted);
  font-size: 14px;
}

.spec-row .avail {
  text-align: right;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12.5px;
  color: var(--green);
  white-space: nowrap;
}

.spec-row .avail::before {
  content: '●';
  margin-right: 6px;
  font-size: 9px;
  position: relative;
  top: -1px;
}

.catalog-note {
  margin-top: 18px;
  font-size: 13px;
  color: var(--ink-faint);
  font-style: italic;
}

/* ---------- Contact ---------- */

.contact {
  padding: 56px 0 64px;
  background: var(--bg-panel);
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.contact .wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact h2 { font-size: 26px; }
.contact p.lead { color: var(--ink-muted); margin-top: 10px; max-width: 42ch; }

.contact-list {
  margin-top: 26px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--ink);
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.contact-item .icon {
  width: 34px;
  height: 34px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
  color: var(--accent);
}

.contact-item .label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--ink-faint);
  display: block;
}
.contact-item .value {
  font-weight: 600;
  font-size: 15px;
}

.form-panel {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 26px;
  background: var(--bg);
}

.form-panel h3 {
  font-size: 15px;
  font-family: 'IBM Plex Mono', monospace;
  color: var(--ink-muted);
  font-weight: 500;
  margin-bottom: 16px;
}

.form-row { margin-bottom: 14px; }

.form-row label {
  display: block;
  font-size: 12.5px;
  color: var(--ink-muted);
  margin-bottom: 6px;
}

.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 10px 12px;
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 14.5px;
  background: #fff;
  color: var(--ink);
}

.form-row textarea { resize: vertical; min-height: 80px; }

/* ---------- Footer ---------- */

footer {
  padding: 26px 0;
}

.footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  color: var(--ink-faint);
}

.footer-row .mono { font-size: 12px; }

/* ---------- Responsive ---------- */

@media (max-width: 880px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .hero-art { order: -1; }
  .hero h1 { font-size: 34px; max-width: none; }
  .cat-grid { grid-template-columns: repeat(3, 1fr); }
  .cat-cell:nth-child(3) { border-right: none; }
  .cat-cell:nth-child(n+4) { border-top: 1px solid var(--line-strong); }
  .contact .wrap { grid-template-columns: 1fr; }
  .spec-row { grid-template-columns: 1fr; gap: 6px; }
  .spec-row .avail { text-align: left; }
}

@media (max-width: 620px) {
  nav.mainnav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg);
    flex-direction: column;
    gap: 0;
    border-bottom: 1px solid var(--line-strong);
    display: none;
  }
  nav.mainnav.open { display: flex; }
  nav.mainnav a { padding: 14px 28px; border-bottom: 1px solid var(--line); width: 100%; }
  .nav-toggle { display: flex; }
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .cat-cell:nth-child(2n) { border-right: none; }
  .cat-cell:nth-child(n+3) { border-top: 1px solid var(--line-strong); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}