/* ===========================================================
   VERINOX — design tokens
   =========================================================== */
:root{
  --paper: #F5F6F3;
  --surface: #FFFFFF;
  --surface-alt: #EEF1EE;
  --ink: #10161C;
  --ink-soft: #4B5560;
  --ink-faint: #8A929B;
  --line: #DADFDC;
  --line-strong: #C2C9C5;
  --accent: #E8720C;
  --accent-ink: #B85700;
  --accent-soft: #FCE7D2;
  --good: #1C8C6E;
  --good-soft: #DCF0E9;

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-s: 3px;
  --radius-m: 6px;
  --container: 1160px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
h1,h2,h3{
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 .5em;
  color: var(--ink);
}
p{ margin: 0 0 1em; color: var(--ink-soft); }
a{ color: inherit; text-decoration: none; }
ul,ol{ margin:0; padding:0; list-style:none; }
svg{ display:block; }
img{ max-width:100%; display:block; }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

:focus-visible{
  outline: 2px solid var(--accent-ink);
  outline-offset: 2px;
}

/* backdrop grid — evokes waveform/graph paper */
.grid-backdrop{
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.35;
  mask-image: linear-gradient(to bottom, black, black 60%, transparent 100%);
}

.section-head{
  max-width: 640px;
  margin: 0 auto 48px;
  text-align: center;
}
.section-head h2{ font-size: clamp(1.6rem, 3vw, 2.1rem); }
.section-sub{ font-size: 1.02rem; }

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--accent-ink);
  margin-bottom: 14px;
  text-transform: uppercase;
}
.eyebrow-mono{ color: var(--ink-faint); text-transform:none; letter-spacing:0; justify-content:center; display:flex; }
.eyebrow-dot{
  width:7px; height:7px; border-radius:50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

/* buttons */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 12px 22px;
  border-radius: var(--radius-s);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, background .15s ease, border-color .15s ease;
}
.btn-primary{
  background: var(--ink);
  color: var(--surface);
}
.btn-primary:hover{ background: var(--accent-ink); transform: translateY(-1px); }
.btn-ghost{
  border-color: var(--line-strong);
  color: var(--ink);
  background: transparent;
}
.btn-ghost:hover{ border-color: var(--ink); background: var(--surface); }
.btn-sm{ padding: 9px 16px; font-size: 0.85rem; }
.btn-block{ width:100%; justify-content:center; }

/* ===========================================================
   NAV
   =========================================================== */
.nav{
  position: sticky; top:0; z-index: 50;
  background: rgba(245,246,243,0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-inner{
  max-width: var(--container);
  margin: 0 auto;
  padding: 16px 24px;
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 24px;
}
.logo{ display:flex; align-items:center; gap:8px; font-family: var(--font-display); }
.logo-mark{
  font-weight: 700;
  font-size: 1.1rem;
  background: var(--ink);
  color: var(--surface);
  width: 30px; height:30px;
  display:inline-flex; align-items:center; justify-content:center;
  border-radius: var(--radius-s);
}
.logo-underscore{ color: var(--accent); }
.logo-word{ font-weight:600; letter-spacing: 0.02em; font-size: 1.02rem; }

.nav-links{ display:flex; gap: 28px; }
.nav-links a{
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-soft);
  position: relative;
  padding: 4px 0;
}
.nav-links a:hover{ color: var(--ink); }
.nav-toggle{
  display:none;
  flex-direction: column;
  gap:5px;
  background:none;
  border:none;
  cursor:pointer;
  padding: 6px;
}
.nav-toggle span{ width: 22px; height:2px; background: var(--ink); border-radius: 2px; }

/* ===========================================================
   HERO
   =========================================================== */
.hero{ padding: 84px 24px 64px; }
.hero-inner{
  max-width: var(--container);
  margin: 0 auto;
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items:center;
}
.hero h1{
  font-size: clamp(2.1rem, 4vw, 3.05rem);
  line-height: 1.12;
  max-width: 15ch;
}
.hero-sub{ font-size: 1.12rem; max-width: 46ch; }
.hero-sub em{ font-style: normal; color: var(--ink); font-weight: 600; }
.hero-actions{ display:flex; gap:14px; margin: 26px 0 18px; flex-wrap: wrap; }
.hero-meta{
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-faint);
}

.wave-panel{
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  box-shadow: 0 24px 48px -32px rgba(16,22,28,0.25);
  overflow: hidden;
}
.wave-panel-head{
  display:flex; justify-content: space-between; align-items:center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.76rem;
}
.wave-tag{ color: var(--ink-soft); }
.wave-status{ color: var(--accent-ink); }
.wave-svg{ width:100%; height:auto; display:block; }

.wave-grid line{ stroke: var(--line); stroke-width: 1; }
.wave-label{
  font-family: var(--font-mono);
  font-size: 12px;
  fill: var(--ink-soft);
}
.wave-data{ font-family: var(--font-mono); font-size: 11px; fill: var(--ink-soft); }
.trace{
  fill:none;
  stroke: var(--ink);
  stroke-width: 2;
  stroke-linecap: square;
}
.trace-fault{ stroke: var(--accent); }
.fault-zone{ fill: var(--accent-soft); opacity: 0.55; }
.fault-line{ stroke: var(--accent); stroke-width: 1; stroke-dasharray: 3 3; }
.callout-box{ fill: var(--surface); stroke: var(--line-strong); }
.callout-title{ font-family: var(--font-mono); font-size: 11px; font-weight:600; fill: var(--ink); }
.callout-body{ font-family: var(--font-mono); font-size: 10.5px; fill: var(--ink-soft); }
.callout-line{ fill:none; stroke: var(--line-strong); stroke-width: 1; }

/* ===========================================================
   PROOF STRIP
   =========================================================== */
.proof{
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--surface-alt);
}
.proof-inner{
  max-width: var(--container);
  margin: 0 auto;
  padding: 18px 24px;
  display:flex;
  flex-wrap: wrap;
  gap: 14px 20px;
  align-items:center;
  justify-content:center;
}
.proof-item{
  margin:0;
  font-size: 0.86rem;
  color: var(--ink-soft);
}
.proof-num{ font-family: var(--font-mono); font-weight:600; color: var(--accent-ink); }
.proof-strong{ color: var(--ink); font-weight:600; }
.proof-sep{ color: var(--line-strong); }

/* ===========================================================
   FEATURES
   =========================================================== */
.features{ max-width: var(--container); margin: 96px auto; padding: 0 24px; }
.feature-grid{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
}
.feature-card{
  background: var(--surface);
  padding: 28px 24px;
}
.feature-icon{
  width: 40px; height: 40px;
  margin-bottom: 18px;
}
.feature-icon svg{
  width:100%; height:100%;
  fill:none;
  stroke: var(--accent-ink);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.feature-card h3{ font-size: 1.02rem; margin-bottom: 8px; }
.feature-card p{ font-size: 0.9rem; margin:0; }

/* ===========================================================
   HOW IT WORKS
   =========================================================== */
.how{ max-width: var(--container); margin: 96px auto; padding: 0 24px; }
.steps{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}
.step{
  border-top: 2px solid var(--ink);
  padding-top: 16px;
}
.step-num{
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-ink);
  display:block;
  margin-bottom: 10px;
}
.step h3{ font-size: 1rem; margin-bottom: 6px; }
.step p{ font-size: 0.9rem; }

/* ===========================================================
   DEMO
   =========================================================== */
.demo{ max-width: var(--container); margin: 96px auto; padding: 0 24px; }
.demo-panel{
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow:hidden;
  box-shadow: 0 24px 48px -36px rgba(16,22,28,0.25);
}
.demo-panel-head{
  display:flex; align-items:center; justify-content:space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--surface-alt);
}
.demo-tabs{ display:flex; gap: 6px; }
.demo-tab{
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 7px 14px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--ink-faint);
  border-radius: var(--radius-s);
  cursor:pointer;
}
.demo-tab.active{
  background: var(--surface);
  border-color: var(--line);
  color: var(--ink);
}
.demo-host{ font-family: var(--font-mono); font-size: 0.75rem; color: var(--ink-faint); }
.demo-body{ padding: 0; }
.code-view{
  display:none;
  margin:0;
  padding: 22px 24px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.7;
  overflow-x:auto;
  color: var(--ink);
}
.code-view.active{ display:block; }
.c-kw{ color: var(--accent-ink); }
.c-fn{ color: var(--good); }
.c-cm{ color: var(--ink-faint); font-style: italic; }

/* ===========================================================
   FAQ
   =========================================================== */
.faq{ max-width: var(--container); margin: 96px auto; padding: 0 24px; }
.faq-list{
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
}
.faq-item{
  background: var(--surface);
  padding: 4px 24px;
}
.faq-item summary{
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--ink);
}
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-icon{
  position: relative;
  width: 18px; height: 18px;
  flex-shrink: 0;
}
.faq-icon::before,
.faq-icon::after{
  content: '';
  position: absolute;
  background: var(--accent-ink);
  border-radius: 2px;
  transition: transform .2s ease;
}
.faq-icon::before{ width: 14px; height: 2px; top: 8px; left: 2px; }
.faq-icon::after{ width: 2px; height: 14px; top: 2px; left: 8px; }
.faq-item[open] .faq-icon::after{ transform: rotate(90deg); opacity: 0; }
.faq-item p{
  font-size: 0.92rem;
  margin: 0 0 20px;
  max-width: 62ch;
}

/* ===========================================================
   ROADMAP
   =========================================================== */
.roadmap{ max-width: var(--container); margin: 96px auto; padding: 0 24px; }
.phase-list{
  max-width: 760px;
  margin: 0 auto;
  border-top: 1px solid var(--line);
}
.phase{
  display:flex;
  gap: 22px;
  padding: 22px 4px;
  border-bottom: 1px solid var(--line);
  align-items: flex-start;
}
.phase-num{
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink-faint);
  padding-top: 3px;
  min-width: 28px;
}
.phase-done .phase-num{ color: var(--good); }
.phase-body{ flex:1; }
.phase-top{ display:flex; align-items:center; gap: 12px; flex-wrap: wrap; }
.phase-top h3{ font-size: 1rem; margin:0; }
.phase-body p{ margin: 6px 0 0; font-size: 0.9rem; }
.phase-badge{
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 3px 9px;
  border-radius: 100px;
  border: 1px solid var(--line-strong);
  color: var(--ink-faint);
}
.badge-done{ background: var(--good-soft); border-color: transparent; color: var(--good); }

/* ===========================================================
   CONTACT
   =========================================================== */
.contact{ max-width: var(--container); margin: 96px auto 64px; padding: 0 24px; }
.contact-inner{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 48px;
}
.contact-copy h2{ font-size: clamp(1.5rem, 3vw, 1.9rem); }
.contact-list{ margin-top: 22px; }
.contact-list li{
  display:flex;
  justify-content: space-between;
  padding: 12px 0;
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
  color: var(--ink-soft);
}
.contact-list li:last-child{ border-bottom: 1px solid var(--line); }
.contact-list span{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-faint);
  text-transform: uppercase;
}
.contact-form{ display:flex; flex-direction: column; gap: 16px; }
.contact-form label{ display:flex; flex-direction:column; gap:6px; font-size: 0.85rem; color: var(--ink-soft); font-weight:500; }
.contact-form input,
.contact-form textarea{
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 11px 13px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-s);
  background: var(--paper);
  color: var(--ink);
  resize: vertical;
}
.contact-form input:focus,
.contact-form textarea:focus{ outline: 2px solid var(--accent-ink); outline-offset:1px; border-color: transparent; }
.form-note{ font-size: 0.78rem; color: var(--ink-faint); text-align:center; margin: 4px 0 0; }

/* ===========================================================
   FOOTER
   =========================================================== */
.footer{ border-top: 1px solid var(--line); padding: 40px 24px; }
.footer-inner{
  max-width: var(--container);
  margin: 0 auto;
  text-align:center;
  display:flex;
  flex-direction: column;
  align-items:center;
  gap: 10px;
}
.footer-brand{ display:flex; align-items:center; gap:8px; }
.footer-tag{ font-size: 0.85rem; margin:0; }
.footer-copy{ font-family: var(--font-mono); font-size: 0.75rem; color: var(--ink-faint); margin:0; }

.footer-social{
  display:flex;
  gap: 20px;
  margin: 2px 0;
}
.footer-social a{
  display:flex;
  align-items:center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--ink-soft);
  transition: color .15s ease;
}
.footer-social a:hover{ color: var(--accent-ink); }
.footer-social svg{
  width: 17px; height: 17px;
  fill: currentColor;
}

.contact-list a{
  color: var(--ink);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: var(--line-strong);
  text-underline-offset: 2px;
}
.contact-list a:hover{ text-decoration-color: var(--accent-ink); }

/* ===========================================================
   RESPONSIVE
   =========================================================== */
@media (max-width: 980px){
  .hero-inner{ grid-template-columns: 1fr; }
  .feature-grid{ grid-template-columns: 1fr 1fr; }
  .steps{ grid-template-columns: 1fr 1fr; }
  .contact-inner{ grid-template-columns: 1fr; padding: 32px; }
}
@media (max-width: 720px){
  .nav-links, .nav-cta{ display:none; }
  .nav-toggle{ display:flex; }
  .nav.open .nav-links{
    display:flex; flex-direction: column;
    position: absolute; top: 100%; left:0; right:0;
    background: var(--surface); border-bottom: 1px solid var(--line);
    padding: 16px 24px; gap: 16px;
  }
  .nav.open .nav-cta{ display:block; position:absolute; top: calc(100% + 190px); left:24px; }
  .feature-grid{ grid-template-columns: 1fr; }
  .steps{ grid-template-columns: 1fr; }
  .proof-sep{ display:none; }
  .proof-inner{ flex-direction:column; text-align:center; }
}