/* AccuTrack SCADA — single-page site */

:root {
  --bg-deep: #05080c;
  --bg-panel: #0c1219;
  --bg-elevated: #111a24;
  --border: rgba(0, 212, 195, 0.12);
  --text: #e4edf5;
  --text-muted: #8a9aac;
  --accent: #00d4c0;
  --accent-dim: rgba(0, 212, 195, 0.15);
  --accent-hot: #ff9f43;
  --font-sans: "Sora", system-ui, sans-serif;
  --font-display: "Outfit", var(--font-sans);
  --radius: 12px;
  --nav-h: 72px;
  --max: 1120px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg-deep);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
}

/* Background mesh */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(0, 212, 195, 0.12), transparent 50%),
    radial-gradient(ellipse 60% 40% at 90% 20%, rgba(255, 159, 67, 0.06), transparent 45%),
    linear-gradient(180deg, #05080c 0%, #080d14 40%, #05080c 100%);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  opacity: 0.35;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.06'/%3E%3C/svg%3E");
  pointer-events: none;
}

.wrap {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

/* —— Header —— */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: rgba(5, 8, 12, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}
.brand span {
  color: var(--accent);
}
.brand:hover {
  text-decoration: none;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1.25rem;
}

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  align-items: center;
}

.site-nav a {
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
}
.site-nav a:hover {
  color: var(--accent);
  text-decoration: none;
}

@media (max-width: 900px) {
  .nav-toggle {
    display: block;
  }
  .site-nav {
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
  }
  .site-nav.open {
    max-height: 420px;
  }
  .site-nav ul {
    flex-direction: column;
    padding: 1rem 1.5rem 1.5rem;
    align-items: flex-start;
  }
}

/* —— Hero —— */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: calc(var(--nav-h) + 3rem) 0 4rem;
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  top: 20%;
  right: -10%;
  width: min(55vw, 520px);
  height: min(55vw, 520px);
  background: radial-gradient(circle, var(--accent-dim) 0%, transparent 70%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
}

.hero-eyebrow {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 1rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin: 0 0 1.25rem;
}

.hero-lead {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 36ch;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.35rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, #00a896 100%);
  color: #041016;
  box-shadow: 0 8px 24px rgba(0, 212, 195, 0.25);
}
.btn-primary:hover {
  color: #041016;
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.hero-visual {
  position: relative;
}
.hero-visual img {
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
  border: 1px solid var(--border);
}

.hero-badge {
  position: absolute;
  bottom: -1rem;
  left: -0.5rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  font-size: 0.8rem;
  max-width: 220px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}
.hero-badge strong {
  color: var(--accent-hot);
}

/* —— Sections —— */
section {
  padding: 5rem 0;
  scroll-margin-top: calc(var(--nav-h) + 1rem);
}

.section-head {
  margin-bottom: 2.5rem;
  max-width: 640px;
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 0.75rem;
}
.section-head p {
  color: var(--text-muted);
  margin: 0;
}

.alt-bg {
  background: linear-gradient(180deg, transparent 0%, rgba(0, 212, 195, 0.03) 50%, transparent 100%);
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.split.reverse {
  grid-template-columns: 1fr 1fr;
}
.split.reverse .split-media {
  order: 0;
}
.split.reverse .split-text {
  order: 1;
}

@media (max-width: 900px) {
  .split {
    grid-template-columns: 1fr;
  }
  .split.reverse .split-text {
    order: 1;
  }
  .split.reverse .split-media {
    order: 2;
  }
}

.split-text p {
  color: var(--text-muted);
  margin-top: 0;
}
.split-text p + p {
  margin-top: 1rem;
}

.split-media img {
  border: 1px solid var(--border);
}

/* Cards */
.cards-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
@media (max-width: 800px) {
  .cards-3 {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: border-color 0.2s ease;
}
.card:hover {
  border-color: rgba(0, 212, 195, 0.35);
}
.card h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin: 0 0 0.5rem;
  color: var(--text);
}
.card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0;
}

/* Feature list */
.check-list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.check-list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.65rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
}

/* Downloads table */
.download-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.download-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.download-table th,
.download-table td {
  padding: 1rem 1.25rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.download-table th {
  background: var(--bg-elevated);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.download-table tr:last-child td {
  border-bottom: none;
}
.download-table code {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.8rem;
  color: var(--accent-hot);
  background: rgba(255, 159, 67, 0.08);
  padding: 0.2rem 0.45rem;
  border-radius: 4px;
}
.download-table .btn-sm {
  padding: 0.45rem 0.9rem;
  font-size: 0.8rem;
}

/* Docs */
.doc-list {
  columns: 1;
  padding-left: 1.25rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}
.doc-list li {
  margin-bottom: 0.4rem;
}

/* Contact strip */
.contact-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}
.contact-item {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}
.contact-item span {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}
.contact-item a {
  font-weight: 600;
  color: var(--text);
}
.contact-item a:hover {
  color: var(--accent);
  text-decoration: none;
}

/* Footer */
.site-footer {
  padding: 3rem 0;
  border-top: 1px solid var(--border);
  margin-top: 2rem;
}
.footer-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1.5rem;
  align-items: center;
}
.social {
  display: flex;
  gap: 1rem;
}
.social a {
  color: var(--text-muted);
  font-size: 1.25rem;
}
.social a:hover {
  color: var(--accent);
  text-decoration: none;
}
.footer-copy {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}