/* FRBL website - black/red CAD motif */

:root {
  --bg: #0a0a0a;
  --bg-raised: #151515;
  --ink: #f0f0f0;
  --muted: #9a9a9a;
  --line: #2a2a2a;
  --accent: #ff0000;
  --accent-dim: #7a1a1a;
  --white: #ffffff;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: Verdana, Geneva, Tahoma, sans-serif;
  color: var(--ink);
  background-color: var(--bg);
  background-image:
    linear-gradient(rgba(255, 0, 0, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 0, 0, 0.05) 1px, transparent 1px),
    linear-gradient(rgba(255, 0, 0, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 0, 0, 0.025) 1px, transparent 1px);
  background-size: 80px 80px, 80px 80px, 16px 16px, 16px 16px;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--accent);
  text-decoration: none;
}

/* Page width container */
.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Sections span the full page width */
main section {
  width: 100%;
}

main {
  flex: 1 0 auto;
}

/* Header */

.site-header {
  background-color: var(--bg-raised);
  color: var(--white);
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
}

.nav {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 1rem;
  min-height: 54px;
}

.brand {
  display: flex;
  align-items: center;
}

.brand-logo {
  height: 30px;
  display: block;
}

.nav-links {
  list-style: none;
  display: flex;
  align-items: stretch;
  margin: 0;
  padding: 0;
  gap: 0.25rem;
}

.nav-links li {
  display: flex;
  align-items: stretch;
}

.nav-links a {
  color: var(--white);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  padding: 0 0.4rem;
  margin: 0 0.25rem;
}

.nav-links a:hover {
  color: var(--accent);
  background-color: rgba(255, 0, 0, 0.1);
}

/* Buttons */

.btn {
  display: inline-block;
  padding: 0.8rem 1.75rem;
  border-radius: 2px;
  font-weight: bold;
  letter-spacing: 0.04em;
  font-size: 0.95rem;
}

.btn-primary {
  background-color: var(--accent);
  color: var(--white);
  border: 1px solid var(--accent);
}

.btn-primary:hover {
  background-color: var(--accent-dim);
  color: var(--white);
}

.btn-secondary {
  background-color: transparent;
  color: var(--white);
  border: 1px solid var(--accent);
}

.btn-secondary:hover {
  background-color: var(--accent-dim);
  color: var(--white);
}

/* Hero */

.hero {
  padding: 5rem 0;
  border-bottom: 1px solid var(--line);
}

.hero-content {
  text-align: center;
}

.eyebrow {
  font-family: "Courier New", Courier, monospace;
  letter-spacing: 0.28em;
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: bold;
}

h1 {
  font-size: 1.7rem;
  line-height: 1.4;
  margin: 1.2rem 0 1rem;
}

.hero-lead {
  font-size: 1.05rem;
  color: var(--muted);
  margin: 0 auto;
  max-width: 560px;
}

/* Sections */

.section-heading {
  text-align: center;
  padding: 4rem 0 2rem;
}

.section-heading h2 {
  font-size: 2rem;
  margin-top: 0.4rem;
}

/* Product grid */

.products-section {
  padding-bottom: 4rem;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.product-card {
  background-color: var(--bg-raised);
  border: 1px solid var(--line);
  border-top: 1px solid var(--accent);
  border-radius: 2px;
  padding: 1.75rem 1.25rem;
  position: relative;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.35);
}

.product-card h3 {
  font-size: 1.35rem;
  margin-bottom: 0.6rem;
}

.product-card p {
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.product-facts {
  list-style: none;
  border-top: 1px solid var(--line);
  padding-top: 0.75rem;
}

.product-facts li {
  padding: 0.3rem 0 0.3rem 1.1rem;
  font-size: 0.9rem;
  position: relative;
}

.product-facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85rem;
  width: 12px;
  height: 1px;
  background-color: var(--accent);
}

.product-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 0.6rem;
}

.product-card-header h3 {
  margin-bottom: 0;
}

.product-card-header .btn {
  margin-left: auto;
  padding: 0.5rem 1.1rem;
  font-size: 0.85rem;
}

/* Content pages (privacy, terms) */

.page-section {
  padding: 3rem 0 5rem;
}

.page-content {
  max-width: 800px;
  margin: 0 auto;
}

.page-content h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.page-content .updated {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

.page-content h2 {
  font-size: 1.35rem;
  margin: 2.25rem 0 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--line);
}

.page-content h3 {
  font-size: 1.1rem;
  margin: 1.5rem 0 0.5rem;
  color: var(--ink);
}

.page-content h4 {
  font-size: 1rem;
  margin: 1.25rem 0 0.4rem;
  color: var(--ink);
}

.page-content p {
  color: var(--muted);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.page-content ul,
.page-content ol {
  margin: 0 0 1rem 1.25rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.page-content li {
  margin-bottom: 0.4rem;
}

.page-content a {
  color: var(--accent);
}

/* Contact page */

.contact-box {
  text-align: center;
  background-color: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 3rem 2rem;
}

.contact-box .eyebrow {
  margin-bottom: 1rem;
}

.contact-box h1 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.contact-box p {
  color: var(--muted);
  max-width: 480px;
  margin: 0 auto 1.5rem;
  font-size: 0.98rem;
}

/* Footer */

.site-footer {
  background-color: var(--bg-raised);
  border-top: 1px solid var(--line);
  color: var(--muted);
  padding: 1.5rem 1.5rem;
  font-size: 0.85rem;
  flex-shrink: 0;
}

.footer-inner {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.9rem;
}

.footer-links a {
  color: var(--muted);
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-copyright {
  font-size: 0.8rem;
  color: #6b6b6b;
}

/* Responsive */

@media (max-width: 640px) {
  .nav {
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.5rem 1rem;
    min-height: 0;
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
  }

  .nav-links a {
    padding: 0.5rem 0.75rem;
  }

  h1 {
    font-size: 1.4rem;
  }

  .hero {
    padding: 3.5rem 0;
  }
}