:root {
  --bg: #000000;
  --card: #0d0d0d;
  --card-hover: #131313;
  --border: #2a2a2a;
  --text: #ffffff;
  --text-muted: #999999;
  --accent: #cbff33;
  --accent-hover: #b8ea23;
  --accent-text: #000000;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  position: relative;
}

#bg-particles {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none; /* never intercepts clicks on real content */
}

/* everything else needs to sit above the fixed canvas */
.topnav, main, footer.site-footer { position: relative; z-index: 1; }

h1, h2, h3, .btn-primary, .btn-secondary, .logo {
  font-family: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
}

a { color: inherit; }

/* --- top nav, shared by home + systems --- */

.topnav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 28px;
  border-bottom: 1px solid var(--border);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 18px;
  text-decoration: none;
  letter-spacing: -0.3px;
}
.logo-product {
  color: var(--accent);
  font-weight: 700;
}
.logo::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 2px;
}

.topnav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.topnav-links a {
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  transition: color 0.15s;
}
.topnav-links a:hover,
.topnav-links a.current { color: var(--text); }

.topnav-links a.btn-primary-nav {
  color: var(--accent-text);
  background: var(--accent);
  padding: 9px 16px;
  border-radius: 8px;
  font-weight: 700;
}
.topnav-links a.btn-primary-nav:hover { background: var(--accent-hover); color: var(--accent-text); }

/* --- breadcrumb, used on tool sub-pages (style.css) but themed here too
   in case a systems sub-page ever wants one --- */
.crumbs {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 14px;
}
.crumbs a { color: var(--text-muted); text-decoration: none; }
.crumbs a:hover { color: var(--accent); }
.crumbs span { margin: 0 6px; }
.crumbs-current { color: var(--text); font-weight: 600; }

/* --- hero --- */

.hero {
  max-width: 900px;
  margin: 0 auto;
  padding: 90px 24px 60px;
  text-align: center;
}

.hero-tag {
  display: inline-block;
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 22px;
}

.hero h1 {
  font-size: 46px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1px;
  margin: 0 0 18px;
}
.hero h1 span { color: var(--accent); }

.hero p {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 34px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
}

.btn-primary, .btn-secondary {
  display: inline-block;
  text-decoration: none;
  cursor: pointer;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 700;
  padding: 13px 24px;
}
.btn-primary {
  background: var(--accent);
  color: var(--accent-text);
  transition: background 0.15s;
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  transition: border-color 0.15s, color 0.15s;
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

/* --- feature strip --- */

.features {
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px 24px 100px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
@media (max-width: 760px) {
  .features { grid-template-columns: 1fr; }
  .hero h1 { font-size: 34px; }
}

.feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}
.feature-card .icon {
  width: 34px;
  height: 34px;
  color: var(--accent);
  margin-bottom: 14px;
}
.feature-card h3 {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 700;
}
.feature-card p {
  margin: 0;
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.55;
}

/* --- systems page --- */

.systems-main {
  max-width: 1000px;
  margin: 0 auto;
  padding: 56px 24px 100px;
}
.systems-header { margin-bottom: 34px; }
.systems-header h1 {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.6px;
  margin: 0 0 10px;
}
.systems-header p { color: var(--text-muted); font-size: 15px; margin: 0; }

.manufacturer { margin-bottom: 40px; }
.manufacturer-name {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.system-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 16px;
}

.system-card {
  display: block;
  background: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 12px;
  padding: 20px;
  text-decoration: none;
  transition: border-color 0.15s, background 0.15s, transform 0.15s;
}
.system-card:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-2px);
}
.system-card h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--accent-text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.system-card h3::after {
  content: "→";
  color: var(--accent-text);
  margin-left: auto;
  font-weight: 400;
}
.system-card p {
  margin: 0;
  font-size: 12.5px;
  color: rgba(0, 0, 0, 0.65);
  line-height: 1.5;
}

.system-card.coming-soon {
  cursor: default;
  background: var(--card);
  border-color: var(--border);
  opacity: 0.75;
}
.system-card.coming-soon h3 { color: var(--text); }
.system-card.coming-soon p { color: var(--text-muted); }
.system-card.coming-soon:hover {
  border-color: var(--border);
  background: var(--card);
  transform: none;
}
.system-card.coming-soon h3::after { content: ""; }
.system-card.coming-soon .badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px 9px;
  margin-top: 10px;
}

footer.site-footer {
  border-top: 1px solid var(--border);
  padding: 24px 28px;
  text-align: center;
  color: var(--text-muted);
  font-size: 12px;
}