/* ===== Design tokens (from Mnevmo_Brand_Guidelines_v1.pdf) ===== */
:root {
  --graphite-900: #131722;
  --graphite-800: #1A1F2B;
  --graphite-700: #232A38;
  --graphite-600: #303847;
  --ivory: #F3F1EC;
  --ivory-muted: #D9D6CE;
  --mist-100: #F7F7F4;
  --mist-200: #EAE8E2;
  --accent: #7BA7FF;
  --accent-dark: #4D7CEB;
  --cta-blue: #7C8CFF;
  --cta-blue-hover: #6370CC;

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 112px;

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "IBM Plex Mono", "SF Mono", monospace;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  --max-width: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { overflow-x: hidden; }

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--graphite-900);
  color: var(--ivory);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

section { padding: var(--space-4xl) 0; }

.section-light { background: var(--mist-100); color: var(--graphite-900); }
.section-light .eyebrow { color: var(--accent-dark); }
.section-light .secondary-text { color: var(--graphite-600); }

.eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 var(--space-md);
}

h1, h2, h3 { font-weight: 700; letter-spacing: -0.01em; margin: 0; }

h1 {
  font-size: clamp(36px, 6vw, 72px);
  line-height: 1.05;
  font-weight: 750;
}

h2 {
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.15;
  margin-bottom: var(--space-lg);
}

p { margin: 0 0 var(--space-md); }

.secondary-text { color: var(--ivory-muted); }

.lede {
  font-size: clamp(17px, 2vw, 19px);
  max-width: 620px;
  color: var(--ivory-muted);
}

.section-light .lede { color: var(--graphite-600); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 15px;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
}

.btn-primary {
  background: var(--cta-blue);
  color: var(--graphite-900);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.18);
  transition: background 0.2s ease, box-shadow 0.2s ease, transform 0.1s ease;
}
.btn-primary:hover { background: var(--cta-blue-hover); box-shadow: 0 2px 6px rgba(0, 0, 0, 0.22); }
.btn-primary:active { transform: translateY(1px); }

.btn-secondary {
  background: transparent;
  border-color: var(--graphite-700);
  color: var(--ivory);
}
.btn-secondary:hover { background: var(--graphite-800); }

.section-light .btn-secondary {
  border-color: var(--mist-200);
  color: var(--graphite-900);
}
.section-light .btn-secondary:hover { background: var(--mist-200); }

.cta-group { display: flex; gap: var(--space-md); flex-wrap: wrap; align-items: center; }

/* ===== Nav ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(19, 23, 34, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--graphite-700);
}
.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-md);
  padding-bottom: var(--space-md);
}
.nav-logo { flex-shrink: 0; }
.nav-logo img { height: 66px; width: auto; }
.nav-links {
  display: flex;
  gap: var(--space-xl);
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 14px;
  font-weight: 500;
  color: var(--ivory-muted);
  white-space: nowrap;
}
.nav-links a:hover { color: var(--ivory); }
.nav-link-cta { display: none; }
.nav-right { display: flex; align-items: center; gap: var(--space-md); flex-shrink: 0; }
.nav-toggle { display: none; background: none; border: none; color: var(--ivory); font-size: 24px; cursor: pointer; }

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-right .btn-primary { display: none; }
  .nav-link-cta { display: block; }
  .nav.open .nav-links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--graphite-900);
    border-bottom: 1px solid var(--graphite-700);
    padding: var(--space-lg);
    gap: var(--space-lg);
  }
}

/* ===== Status badge ===== */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--graphite-700);
  background: var(--graphite-800);
  font-size: 13px;
  font-weight: 500;
  color: var(--ivory-muted);
  margin-bottom: var(--space-lg);
}
.status-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

/* ===== Hero ===== */
.hero { padding-top: calc(var(--space-3xl) + 28px); }
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}
.hero-grid > * { min-width: 0; }
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
}
.hero-copy { max-width: 620px; }
.hero-copy h1 { margin-bottom: var(--space-lg); }
.hero-copy .lede { margin-bottom: var(--space-xl); }
.trust-line {
  margin-top: var(--space-lg);
  font-size: 13px;
  color: var(--ivory-muted);
}

.positioning-line {
  margin-top: var(--space-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--ivory);
  opacity: 0.9;
}

/* ===== Value badges ===== */
.value-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
  font-size: 13px;
  font-weight: 500;
  color: var(--ivory-muted);
}
.value-badges span { display: inline-flex; align-items: center; gap: 6px; }
.value-badges .check { color: var(--cta-blue); font-size: 13px; }

/* Hero visual: waveform resolving into knowledge cards */
.hero-visual {
  background: var(--graphite-800);
  border: 1px solid var(--graphite-700);
  border-radius: var(--radius-lg);
  padding: 36px;
  margin-top: -20px;
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  overflow: hidden;
}
.waveform { display: flex; align-items: center; gap: 3px; height: 132px; }
.waveform span {
  display: block;
  width: 3px;
  border-radius: 2px;
  background: var(--ivory-muted);
}
.knowledge-cards { display: flex; flex-direction: column; gap: var(--space-sm); flex: 1; }
.k-card {
  background: var(--graphite-700);
  border: 1px solid var(--graphite-600);
  border-radius: var(--radius-sm);
  padding: 18px;
}
.k-card .tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(123, 167, 255, 0.12);
  padding: 3px 9px;
  border-radius: 999px;
  margin-bottom: var(--space-sm);
}
.k-card .line { height: 9px; background: var(--graphite-600); border-radius: 4px; margin-bottom: 7px; }
.k-card .line:last-child { margin-bottom: 0; width: 70%; }
.k-card .timestamp {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ivory-muted);
  margin-top: var(--space-sm);
}

/* ===== Hero visual: lightweight "alive" animations ===== */
@keyframes wavePulse {
  0%, 100% { transform: scaleY(0.45); }
  50% { transform: scaleY(1); }
}
.waveform span { animation: wavePulse 1.6s ease-in-out infinite; transform-origin: center; }

@keyframes lineReveal {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}
.k-card .line {
  animation: lineReveal 0.5s ease-out both;
  animation-delay: var(--line-delay, 0s);
}
.k-card .tag { animation: lineReveal 0.4s ease-out both; }

@keyframes summaryPulse {
  0%, 100% { background: var(--graphite-600); }
  50% { background: var(--accent); opacity: 0.55; }
}
.k-card.is-generating .line:first-of-type { animation: summaryPulse 2.2s ease-in-out infinite; }

@keyframes cardFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
}
.k-card { animation: cardFloat 5s ease-in-out infinite; }
.k-card:nth-of-type(2) { animation-delay: 1.4s; }

@media (prefers-reduced-motion: reduce) {
  .waveform span, .k-card .line, .k-card .tag, .k-card, .k-card.is-generating .line:first-of-type {
    animation: none !important;
  }
}

/* ===== Workflow ===== */
.workflow-list { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-md); }
.workflow-item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: var(--space-lg);
  align-items: flex-start;
  background: var(--graphite-800);
  border: 1px solid var(--graphite-700);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
}
.workflow-num {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--graphite-700);
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
}
.workflow-item h3 { font-size: 17px; margin-bottom: 4px; }
.workflow-item p { margin: 0; color: var(--ivory-muted); }

/* ===== Card grids ===== */
.grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.card {
  background: var(--graphite-800);
  border: 1px solid var(--graphite-700);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
}
.section-light .card {
  background: #ffffff;
  border-color: var(--mist-200);
}
.card .icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--graphite-700);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  color: var(--accent);
}
.section-light .card .icon { background: var(--mist-200); }
.card h3 { font-size: 16px; margin-bottom: var(--space-sm); }
.card p { margin: 0; font-size: 14px; color: var(--ivory-muted); }
.section-light .card p { color: var(--graphite-600); }

/* ===== Differentiation ===== */
.diff-contrast {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}
@media (max-width: 700px) { .diff-contrast { grid-template-columns: 1fr; } }
.diff-box {
  border: 1px solid var(--graphite-700);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
}
.diff-box.no { color: var(--ivory-muted); }
.diff-box.yes { border-color: var(--accent); background: rgba(123,167,255,0.06); }

/* ===== Privacy bullets ===== */
.bullet-list { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-md); }
.bullet-list li {
  display: flex;
  gap: var(--space-sm);
  font-size: 15px;
}
.bullet-list li::before {
  content: "";
  flex-shrink: 0;
  margin-top: 7px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

/* ===== Export formats ===== */
.format-row {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin-top: var(--space-lg);
}
.format-pill {
  font-family: var(--font-mono);
  font-size: 13px;
  border: 1px solid var(--graphite-700);
  border-radius: 999px;
  padding: 6px 16px;
  color: var(--ivory-muted);
}

/* ===== FAQ ===== */
.faq-item {
  border-bottom: 1px solid var(--graphite-700);
  padding: var(--space-lg) 0;
}
.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 16px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 20px;
  color: var(--accent);
  margin-left: var(--space-md);
}
.faq-item[open] summary::after { content: "–"; }
.faq-item p { margin-top: var(--space-md); color: var(--graphite-600); }

/* ===== Final CTA ===== */
.final-cta {
  text-align: center;
  background: linear-gradient(180deg, var(--graphite-900) 0%, var(--graphite-800) 100%);
}
.final-cta .cta-group { justify-content: center; }
.final-cta .lede { margin: 0 auto var(--space-xl); }

/* ===== Waitlist form ===== */
.waitlist-form { display: flex; gap: var(--space-sm); flex-wrap: wrap; margin-top: var(--space-md); }
.waitlist-form input[type="email"] {
  flex: 1;
  min-width: 220px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--graphite-700);
  background: var(--graphite-800);
  color: var(--ivory);
  font-size: 15px;
  font-family: var(--font-sans);
}
.waitlist-form input[type="email"]::placeholder { color: var(--ivory-muted); }
.waitlist-note { font-size: 13px; color: var(--ivory-muted); margin-top: var(--space-sm); }
.waitlist-success { display: none; color: var(--accent); font-weight: 600; margin-top: var(--space-md); }
.waitlist-error { display: none; color: var(--ivory-muted); font-weight: 600; margin-top: var(--space-md); }

/* ===== Footer ===== */
footer { background: var(--graphite-900); border-top: 1px solid var(--graphite-700); padding: var(--space-3xl) 0 var(--space-xl); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-xl);
}
@media (max-width: 700px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-grid h4 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ivory-muted); margin-bottom: var(--space-md); }
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-sm); font-size: 14px; }
.footer-grid ul a:hover { color: var(--accent); }
.footer-bottom {
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--graphite-700);
  font-size: 13px;
  color: var(--ivory-muted);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

/* ===== Reveal on scroll ===== */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.5s ease, transform 0.5s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

.legal-content h3 { font-size: 18px; margin-top: var(--space-2xl); margin-bottom: var(--space-sm); }
.legal-content p, .legal-content li { color: var(--ivory-muted); font-size: 15px; }
.legal-content ul { padding-left: 20px; }

/* ===== Roadmap (Coming Soon) ===== */
.roadmap-list { list-style: none; margin: var(--space-lg) 0 0; padding: 0; display: grid; gap: var(--space-md); }
.roadmap-list li {
  border: 1px dashed var(--graphite-700);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  color: var(--ivory-muted);
  font-size: 15px;
}
.roadmap-list li strong { color: var(--ivory); }