:root {
  --bg-deep: #060b12;
  --bg-panel: #0c1420;
  --bg-elevated: #111c2d;
  --border: rgba(120, 160, 200, 0.14);
  --border-strong: rgba(120, 160, 200, 0.28);
  --text: #e8eef6;
  --text-muted: #8fa3bc;
  --accent: #3dd6c6;
  --accent-dim: rgba(61, 214, 198, 0.12);
  --accent-warm: #f0a050;
  --glow: rgba(61, 214, 198, 0.35);
  --font-display: "Outfit", "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;
  --header-h: 4.5rem;
  --radius: 12px;
  --container: min(1120px, calc(100% - 2.5rem));
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg-deep);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover { color: #6ee8dc; }

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.container {
  width: var(--container);
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 9999;
  padding: 0.75rem 1rem;
  background: var(--accent);
  color: var(--bg-deep);
  font-weight: 600;
}

.skip-link:focus { left: 1rem; top: 1rem; }

/* Header */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--header-h);
  background: rgba(6, 11, 18, 0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text);
}

.logo:hover { color: var(--text); }

.logo-mark {
  width: 2rem;
  height: 2rem;
  color: var(--accent);
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.logo-text strong {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.logo-text small {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-nav a {
  color: var(--text-muted);
  font-size: 0.9375rem;
  font-weight: 500;
}

.site-nav a:hover { color: var(--text); }

.nav-cta {
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  color: var(--text) !important;
  background: var(--accent-dim);
}

.nav-cta:hover {
  border-color: var(--accent);
  color: var(--accent) !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  border: none;
  background: none;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

/* Hero */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 3rem) 0 4rem;
  overflow: hidden;
}

#mesh-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.55;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black, transparent);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.eyebrow-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--glow);
  animation: pulse 2.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}

.hero h1 {
  margin: 0 0 1.25rem;
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.25rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.hero-accent {
  background: linear-gradient(120deg, var(--accent) 0%, #7ae8dc 50%, var(--accent-warm) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-product {
  display: block;
  margin-bottom: 0.15em;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-warm);
}

.hero-lead {
  max-width: 38rem;
  margin: 0 0 2rem;
  font-size: 1.125rem;
  color: var(--text-muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.5rem;
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--accent);
  color: var(--bg-deep);
  box-shadow: 0 0 32px var(--glow);
}

.btn-primary:hover {
  color: var(--bg-deep);
  box-shadow: 0 0 48px var(--glow);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}

.btn-ghost:hover { color: var(--accent); border-color: var(--accent); }

.btn-full { width: 100%; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin: 0;
  padding: 1.5rem 0 0;
  border-top: 1px solid var(--border);
}

.hero-stats div { min-width: 0; }

.hero-stats dt {
  margin: 0 0 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hero-stats dd {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--text-muted);
}

/* Sections */
.section {
  padding: 6rem 0;
}

.section-alt {
  background: var(--bg-panel);
  border-block: 1px solid var(--border);
}

.section-header {
  max-width: 36rem;
  margin: 0 auto 3rem;
  text-align: center;
}

.section-header.align-left {
  margin-inline: 0;
  text-align: left;
}

.section-tag {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.12em;
}

.section-header h2 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section-header p {
  margin: 0;
  color: var(--text-muted);
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.card {
  padding: 1.75rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.card-featured {
  border-color: rgba(61, 214, 198, 0.35);
  background: linear-gradient(145deg, rgba(61, 214, 198, 0.08), var(--bg-elevated));
}

.card-icon {
  margin-bottom: 1rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--accent-warm);
}

.card h3 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
}

.card p {
  margin: 0 0 1rem;
  font-size: 0.9375rem;
  color: var(--text-muted);
}

.card ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.card li {
  position: relative;
  padding-left: 1rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.card li + li { margin-top: 0.35rem; }

.card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
}

/* Solutions */
.solution-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.solution-item {
  padding: 2rem;
  background: var(--bg-deep);
}

.solution-label {
  margin-bottom: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.1em;
}

.solution-item h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
}

.solution-item p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--text-muted);
}

/* CAE Agent section */
.section-agent {
  background:
    radial-gradient(ellipse 80% 50% at 50% 0%, rgba(61, 214, 198, 0.06), transparent),
    var(--bg-deep);
  border-block: 1px solid var(--border);
}

.agent-intro {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2rem;
  margin-bottom: 4rem;
}

.agent-intro-copy h3,
.agent-subtitle {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
}

.agent-intro-copy p {
  margin: 0 0 1rem;
  color: var(--text-muted);
}

.agent-intro-copy strong {
  color: var(--text);
  font-weight: 600;
}

.agent-intro-panel {
  padding: 2rem;
  background: var(--bg-elevated);
  border: 1px solid rgba(61, 214, 198, 0.25);
  border-radius: var(--radius);
  box-shadow: inset 0 1px 0 rgba(61, 214, 198, 0.08);
}

.agent-badge {
  display: inline-block;
  margin-bottom: 1rem;
  padding: 0.35rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(61, 214, 198, 0.3);
  border-radius: 6px;
}

.agent-tagline {
  margin: 0 0 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-warm);
  letter-spacing: 0.04em;
  line-height: 1.6;
}

.agent-highlights {
  margin: 0;
  padding: 0;
  list-style: none;
}

.agent-highlights li {
  position: relative;
  padding-left: 1.1rem;
  font-size: 0.9375rem;
  color: var(--text-muted);
}

.agent-highlights li + li { margin-top: 0.65rem; }

.agent-highlights li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--accent);
}

.agent-capabilities,
.agent-workflow,
.agent-scenarios {
  margin-bottom: 4rem;
}

.agent-cap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.agent-cap {
  padding: 1.5rem;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.25s ease;
}

.agent-cap:hover { border-color: var(--border-strong); }

.agent-cap-label {
  display: block;
  margin-bottom: 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--accent-warm);
  letter-spacing: 0.08em;
}

.agent-cap h4 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
}

.agent-cap p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.65;
}

.workflow-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.workflow-steps li {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.5rem 1.25rem;
  background: var(--bg-panel);
  border-right: 1px solid var(--border);
}

.workflow-steps li:last-child { border-right: none; }

.step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--bg-deep);
  background: var(--accent);
  border-radius: 50%;
}

.workflow-steps strong {
  display: block;
  margin-bottom: 0.35rem;
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 600;
}

.workflow-steps p {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.55;
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.scenario-card {
  padding: 1.5rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
}

.scenario-card h4 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
}

.scenario-card p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.agent-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 2rem 2.5rem;
  background: linear-gradient(135deg, rgba(61, 214, 198, 0.1), var(--bg-elevated));
  border: 1px solid rgba(61, 214, 198, 0.25);
  border-radius: var(--radius);
}

.agent-cta p {
  margin: 0;
  max-width: 36rem;
  color: var(--text-muted);
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: start;
}

.about-copy p {
  color: var(--text-muted);
}

.about-copy p + p { margin-top: 1rem; }

.about-copy em {
  color: var(--accent);
  font-style: normal;
}

.about-points {
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

.about-points li {
  position: relative;
  padding-left: 1.25rem;
  color: var(--text);
}

.about-points li + li { margin-top: 0.5rem; }

.about-points li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent);
}

.about-panel {
  padding: 2rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.about-panel h3 {
  margin: 0 0 1.25rem;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.tech-tags span {
  padding: 0.35rem 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-muted);
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: 6px;
}

.about-metric {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 1.5rem;
  background: var(--bg-deep);
  border-radius: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
}

.metric-value { color: var(--text); }
.metric-value.accent { color: var(--accent); }
.metric-plus, .metric-eq { color: var(--text-muted); font-weight: 400; }

/* Contact */
.section-cta {
  background:
    radial-gradient(ellipse 60% 50% at 50% 100%, rgba(61, 214, 198, 0.08), transparent),
    var(--bg-panel);
}

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

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  font-style: normal;
}

.contact-info > div {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.contact-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.contact-form {
  padding: 2rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.contact-form-body {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-form-success {
  padding: 2rem 1rem;
  text-align: center;
}

.contact-form-success p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--accent);
}

.contact-form label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.contact-form label span {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-muted);
}

.contact-form input,
.contact-form textarea {
  padding: 0.75rem 1rem;
  font: inherit;
  color: var(--text);
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: 8px;
  resize: vertical;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: rgba(143, 163, 188, 0.6);
}

.form-error {
  padding: 0.875rem 1rem;
  font-size: 0.875rem;
  color: #ffb4b4;
  background: rgba(255, 100, 100, 0.1);
  border: 1px solid rgba(255, 100, 100, 0.25);
  border-radius: 8px;
}

.contact-form.is-sent {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 280px;
}

.btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
}

/* Footer */
.site-footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem;
}

.footer-inner p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer-sub {
  font-family: var(--font-mono);
  font-size: 0.75rem !important;
}

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* Responsive */
@media (max-width: 900px) {
  .card-grid,
  .solution-list,
  .about-grid,
  .contact-grid,
  .agent-intro,
  .agent-cap-grid {
    grid-template-columns: 1fr;
  }

  .workflow-steps {
    grid-template-columns: 1fr;
  }

  .workflow-steps li {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .workflow-steps li:last-child { border-bottom: none; }

  .scenario-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-stats {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

@media (max-width: 600px) {
  .scenario-grid {
    grid-template-columns: 1fr;
  }

  .agent-cta {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }

  .site-nav {
    position: fixed;
    inset: var(--header-h) 0 auto;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 1rem;
    background: rgba(6, 11, 18, 0.96);
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }

  .site-nav.is-open {
    transform: none;
    opacity: 1;
    pointer-events: auto;
  }

  .site-nav a {
    padding: 0.875rem 0;
    border-bottom: 1px solid var(--border);
  }

  .site-nav .nav-cta {
    margin-top: 0.5rem;
    text-align: center;
    border-bottom: none;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }

  .nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .eyebrow-dot { animation: none; }

  .btn:hover,
  .card:hover { transform: none; }
}