/* ── Design tokens ── */
:root {
  --bg-deep: #060a12;
  --bg-primary: #0c1222;
  --bg-elevated: #121a2e;
  --bg-card: #161f35;
  --border: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(91, 159, 212, 0.25);
  --text-primary: #f0f2f5;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --brand: #1b3e5b;
  --brand-light: #2a5a7a;
  --accent: #5b9fd4;
  --accent-light: #7eb8e3;
  --accent-glow: rgba(91, 159, 212, 0.15);
  --green: #34d399;
  --font-sans: "Inter", system-ui, -apple-system, sans-serif;
  --font-display: "Playfair Display", Georgia, serif;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --transition: 0.25s ease;
  --container: 1140px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  font-family: var(--font-sans);
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ── Header ── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(6, 10, 18, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}
.header.scrolled { border-bottom-color: var(--border); }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.logo img {
  height: 36px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-links a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--text-primary); }
.nav-cta {
  padding: 0.5rem 1.25rem !important;
  background: var(--brand);
  color: var(--text-primary) !important;
  border: 1px solid var(--border-accent);
  border-radius: 8px;
  font-weight: 600 !important;
  transition: background var(--transition), transform var(--transition) !important;
}
.nav-cta:hover { background: var(--brand-light); transform: translateY(-1px); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.75rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
}
.btn-primary {
  background: var(--brand);
  color: var(--text-primary);
  border: 1px solid rgba(91, 159, 212, 0.3);
}
.btn-primary:hover {
  background: var(--brand-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--accent-glow);
}
.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.btn-full { width: 100%; }

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 0 4rem;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(27, 62, 91, 0.35) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(91, 159, 212, 0.06) 0%, transparent 50%),
    linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-deep) 100%);
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 40%, black 20%, transparent 70%);
}
.hero-content { position: relative; z-index: 1; }

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5.5vw, 4rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
  max-width: 720px;
}
.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 4rem;
}
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border);
}
.stat-value {
  display: block;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}
.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ── Sections ── */
.section { padding: 6rem 0; }
.section-alt { background: var(--bg-primary); }

.section-header { margin-bottom: 3.5rem; }
.section-header.centered { text-align: center; max-width: 640px; margin-left: auto; margin-right: auto; }
.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}
.section-header h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.section-desc {
  margin-top: 1rem;
  color: var(--text-secondary);
  font-size: 1.05rem;
}
.lead {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 1.25rem;
}

/* ── About ── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
.about-cards {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.info-card {
  padding: 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--transition), transform var(--transition);
}
.info-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-2px);
}
.info-icon {
  width: 40px;
  height: 40px;
  color: var(--accent);
  margin-bottom: 1rem;
}
.info-icon svg { width: 100%; height: 100%; }
.info-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.info-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ── Process ── */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}
.process-step {
  padding: 2rem 1.5rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  position: relative;
}
.step-num {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.4;
  margin-bottom: 1rem;
  font-family: var(--font-display);
}
.process-step h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}
.process-step p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ── Technology ── */
.tech-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.tech-list {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.tech-list li {
  padding-left: 1.25rem;
  border-left: 2px solid var(--accent);
}
.tech-list strong {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
}
.tech-list span {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.terminal {
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.terminal-bar {
  display: flex;
  gap: 6px;
  padding: 12px 16px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
}
.terminal-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text-muted);
  opacity: 0.5;
}
.terminal-bar span:first-child { background: #ef4444; opacity: 0.7; }
.terminal-bar span:nth-child(2) { background: #eab308; opacity: 0.7; }
.terminal-bar span:nth-child(3) { background: #22c55e; opacity: 0.7; }
.terminal-body {
  padding: 1.5rem;
  font-family: "Consolas", "Monaco", monospace;
  font-size: 0.85rem;
  line-height: 1.8;
  color: var(--text-secondary);
}
.t-dim { color: var(--text-muted); }
.t-green { color: var(--green); }
.t-cursor {
  animation: blink 1s step-end infinite;
  color: var(--accent);
}
@keyframes blink { 50% { opacity: 0; } }

/* ── Risk ── */
.risk-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
.risk-card {
  padding: 2rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--transition);
}
.risk-card:hover { border-color: var(--border-accent); }
.risk-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--accent-light);
}
.risk-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ── CTA ── */
.cta-section {
  padding: 5rem 0;
  background:
    radial-gradient(ellipse 60% 80% at 50% 50%, var(--accent-glow) 0%, transparent 70%),
    var(--bg-primary);
}
.cta-inner {
  text-align: center;
  max-width: 560px;
}
.cta-inner h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  margin-bottom: 1rem;
}
.cta-inner p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

/* ── Contact ── */
.contact-single {
  max-width: 560px;
}
.contact-single h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}
.contact-intro {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.7;
}
.contact-details {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.contact-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}
.contact-item a {
  color: var(--accent);
  transition: color var(--transition);
}
.contact-item a:hover { color: var(--accent-light); }

.cta-logo {
  height: 48px;
  width: auto;
  margin: 0 auto 1.5rem;
  opacity: 0.95;
}

/* ── Footer ── */
.footer {
  padding: 3rem 0 2rem;
  border-top: 1px solid var(--border);
  background: var(--bg-deep);
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 2rem;
  align-items: start;
}
.footer-brand p {
  margin-top: 0.75rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}
.footer-links {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.footer-links a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--accent); }
.footer-legal {
  text-align: right;
}
.footer-legal p {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.disclaimer {
  margin-top: 0.75rem;
  max-width: 420px;
  margin-left: auto;
  line-height: 1.5;
}

/* ── Responsive ── */
@media (max-width: 960px) {
  .about-grid,
  .tech-layout { grid-template-columns: 1fr; gap: 2.5rem; }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr; text-align: center; }
  .footer-links { justify-content: center; }
  .footer-legal { text-align: center; }
  .disclaimer { margin-left: auto; margin-right: auto; }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(6, 10, 18, 0.97);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition), opacity var(--transition);
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-links li { width: 100%; }
  .nav-links a {
    display: block;
    padding: 0.875rem 1.5rem;
    text-align: center;
  }
  .nav-cta { margin: 0.5rem 1.5rem 0 !important; display: block !important; text-align: center; }
  .process-grid { grid-template-columns: 1fr; }
  .risk-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 1.5rem; }
  .section { padding: 4rem 0; }
}