/* ── Design tokens ── */
:root {
  --bg-primary: #111820;
  --bg-card: rgba(255, 255, 255, 0.025);
  --border: rgba(255, 255, 255, 0.055);
  --border-accent: rgba(201, 149, 46, 0.1);
  --text-primary: #ffffff;
  --text-secondary: #dde2e8;
  --text-muted: rgba(255, 255, 255, 0.42);
  --text-faint: rgba(255, 255, 255, 0.28);
  --accent: #c9952e;
  --accent-hover: #b8841f;
  --accent-subtle: rgba(201, 149, 46, 0.1);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --nav-height: 64px;
}

/* ── Reset & base ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg-primary);
  color: var(--text-secondary);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

/* ── Typography helpers ── */
h1, h2, h3 {
  color: var(--text-primary);
  line-height: 1.2;
}

h1 { font-size: clamp(2rem, 4vw, 2.75rem); font-weight: 700; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 700; letter-spacing: -0.015em; }
h3 { font-size: 1rem; font-weight: 600; }

.accent { color: var(--accent); }

.eyebrow,
.section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.3px;
  text-transform: uppercase;
  color: var(--accent);
}

.section-sub {
  color: var(--text-muted);
  font-size: 0.9375rem;
  max-width: 640px;
}

/* ── Layout helpers ── */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

.section-alt {
  background: rgba(255, 255, 255, 0.015);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section > .container > * + * { margin-top: 16px; }
.section > .container > h2 { margin-top: 8px; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s, opacity 0.15s;
  border: 1.5px solid transparent;
  white-space: nowrap;
}

.btn-gold {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-gold:hover { background: var(--accent-hover); border-color: var(--accent-hover); }

.btn-outline {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}
.btn-outline:hover { background: var(--accent-subtle); }

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border);
}
.btn-ghost:hover { border-color: rgba(255,255,255,0.18); color: var(--text-primary); }

.btn-full { width: 100%; }

/* ── NAV ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-primary);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  height: var(--nav-height);
}

.nav-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.nav-brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.nav-wordmark {
  font-size: 19px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.nav-sub {
  font-size: 11px;
  color: var(--text-faint);
}

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

.nav-links a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--text-primary); }
.nav-links .btn { font-size: 0.875rem; padding: 7px 16px; }

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: opacity 0.15s, transform 0.15s;
}

/* ── HERO ── */
.hero {
  padding-top: calc(var(--nav-height) * 0.5);
  padding-bottom: 0;
  overflow: hidden;
}

.hero-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  min-height: 420px;
  gap: 48px;
  align-items: center;
}

.hero-text {
  padding: 64px 0 64px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.hero-body {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 500px;
}

.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.badge {
  font-size: 12px;
  color: var(--text-faint);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 12px;
  white-space: nowrap;
}

.hero-image {
  align-self: stretch;
  display: flex;
}

.hero-image img {
  width: 100%;
  height: 100%;
  min-height: 420px;
  object-fit: cover;
  object-position: center top;
  border-radius: 0;
}

/* ── HOW IT WORKS ── */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 40px !important;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.step-num {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 1px;
}

.step-tagline {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-style: italic;
}

.step-card p:last-child {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── FEATURES ── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 40px !important;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.feature-icon {
  color: var(--accent);
  display: flex;
  align-items: center;
  width: 15px;
  height: 15px;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── USE CASE ── */
.usecase-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: 40px !important;
  background: var(--bg-card);
}

.usecase-without,
.usecase-with {
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.usecase-with {
  border-left: 1px solid rgba(201, 149, 46, 0.2);
}

.usecase-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.3px;
  text-transform: uppercase;
  color: var(--accent);
}

.usecase-without h3,
.usecase-with h3 {
  font-size: 1rem;
}

.usecase-without p:last-child {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.metrics {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 8px;
}

.metric {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.metric-val {
  font-size: 24px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.metric-desc {
  font-size: 12px;
  color: var(--text-faint);
}

/* ── CONTACT ── */
.contact-inner {
  max-width: 400px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-inner > * + * { margin-top: 0; }
.contact-inner .section-sub { max-width: 100%; }

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 8px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.9375rem;
  padding: 10px 14px;
  width: 100%;
  transition: border-color 0.15s;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-faint);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: rgba(201, 149, 46, 0.5);
}

.form-thanks {
  font-size: 0.9rem;
  color: var(--accent);
  text-align: center;
  margin-top: 4px;
}

/* ── FOOTER ── */
.footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
}

.footer-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-logo {
  opacity: 0.4;
}

.footer-copy {
  font-size: 12px;
  color: var(--text-faint);
}

.footer-patent {
  font-size: 11px;
  color: var(--text-faint);
  opacity: 0.6;
  letter-spacing: 0.3px;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {

  /* Nav */
  .nav-hamburger { display: flex; }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px 20px;
    gap: 16px;
  }

  .nav-links.open { display: flex; }

  .nav-links a { font-size: 1rem; }
  .nav-links .btn { width: 100%; justify-content: center; }

  .nav { position: sticky; } /* keep sticky so dropdown positions correctly */

  /* Hero */
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .hero-text { padding: 48px 0 32px; }

  .hero-image {
    order: -1;
    margin: 0 -24px;
  }

  .hero-image img {
    min-height: 240px;
    border-radius: 0;
  }

  /* Steps */
  .steps {
    grid-template-columns: 1fr;
  }

  /* Features */
  .features-grid {
    grid-template-columns: 1fr;
  }

  /* Use case */
  .usecase-card {
    grid-template-columns: 1fr;
  }

  .usecase-with {
    border-left: none;
    border-top: 1px solid rgba(201, 149, 46, 0.2);
  }

  /* Footer */
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .section { padding: 64px 0; }
}

@media (max-width: 480px) {
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.375rem; }

  .hero-cta { flex-direction: column; }
  .hero-cta .btn { justify-content: center; }
}