/* SellerScope — design system
   Dark navy / off-white / electric green accent. System font stack only. */

:root {
  --bg: #0b1220;
  --bg-raised: #0f1830;
  --bg-card: #121b33;
  --border: #223055;
  --text: #e9edf5;
  --text-dim: #aab4cc;
  --text-faint: #7c88a8;
  --accent: #22dd88;
  --accent-dim: #1aa868;
  --accent-ink: #06170f;
  --danger: #ff8a8a;
  --max-width: 1180px;
  --measure: 65ch;
  --radius: 12px;
  --space-section: clamp(4rem, 9vw, 8rem);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

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

html {
  color-scheme: dark;
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: var(--accent); text-decoration-color: color-mix(in srgb, var(--accent) 50%, transparent); }
a:hover { text-decoration-thickness: 2px; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

h1, h2, h3, h4 { line-height: 1.15; font-weight: 700; letter-spacing: -0.02em; margin: 0 0 0.6em; }
h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; color: var(--text-dim); max-width: var(--measure); }
.section-head p { margin-left: auto; margin-right: auto; }

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  padding: 0.3em 0.7em;
  border-radius: 999px;
  margin-bottom: 1rem;
}

.wrap {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 0.6em 1em;
  border-radius: 8px;
  font-weight: 600;
  z-index: 200;
  transition: top 0.15s ease;
}
.skip-link:focus { top: 1rem; }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.wordmark {
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.wordmark .dot { color: var(--accent); }

.nav-links {
  display: flex;
  gap: clamp(0.9rem, 1.6vw, 1.6rem);
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  padding: 0.4em 0.1em;
  border-bottom: 2px solid transparent;
}
.nav-links a:hover,
.nav-links a[aria-current="true"] {
  color: var(--text);
  border-bottom-color: var(--accent);
}

.nav-cta {
  display: inline-block;
  color: var(--accent-ink) !important;
  background: var(--accent);
  padding: 0.5em 1em;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none !important;
  border-bottom: none !important;
}
.nav-cta:hover { background: var(--accent-dim); }

.nav-primary { display: flex; align-items: center; gap: clamp(1rem, 2vw, 2rem); }

.burger {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  width: 40px;
  height: 40px;
  color: var(--text);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.burger svg { width: 20px; height: 20px; }

@media (max-width: 860px) {
  .nav-links {
    position: fixed;
    inset: 64px 0 auto 0;
    flex-direction: column;
    background: var(--bg-raised);
    border-bottom: 1px solid var(--border);
    padding: 1rem clamp(1.25rem, 4vw, 2.5rem) 1.5rem;
    gap: 0.25rem;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.18s ease, transform 0.18s ease;
  }
  .nav-links a { display: block; padding: 0.7em 0.2em; border-bottom: 1px solid var(--border); }
  .site-header.nav-open .nav-links {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .nav-cta { display: none; }
  .burger { display: inline-flex; }
}

/* No-JS fallback: keep the mobile nav links reachable without JS by hiding only the burger */
.no-js .burger { display: none; }
.no-js .nav-links {
  position: static;
  transform: none;
  opacity: 1;
  pointer-events: auto;
  background: none;
  border: none;
  padding: 0;
  flex-direction: row;
  flex-wrap: wrap;
}
@media (max-width: 860px) {
  .no-js .nav-links { flex-direction: column; padding-top: 0.5rem; }
  .no-js .nav-cta { display: inline-block; margin-top: 0.5rem; }
}

/* ---------- Sections ---------- */
section {
  padding-block: var(--space-section);
  border-bottom: 1px solid var(--border);
  scroll-margin-top: 76px;
}
section:last-of-type { border-bottom: none; }

.section-head { max-width: 46rem; margin-bottom: clamp(2rem, 5vw, 3.5rem); }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head.center p { margin-inline: auto; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding-top: clamp(4rem, 12vw, 7rem);
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.55;
  pointer-events: none;
}
.hero-bg svg { width: 100%; height: 100%; }
.hero-inner { position: relative; z-index: 1; max-width: 44rem; }
.hero .subhead { font-size: 1.1rem; max-width: 42rem; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2rem; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.85em 1.5em;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.98rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: var(--accent-dim); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Cards / grids ---------- */
.card-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.card h3 { margin-bottom: 0.5rem; }
.card p { margin-bottom: 0; font-size: 0.95rem; }
.card .icon {
  width: 36px;
  height: 36px;
  margin-bottom: 1rem;
  color: var(--accent);
}

.card.excluded { opacity: 0.75; }
.card.highlight {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--border));
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 25%, transparent) inset;
}

/* ---------- Placeholder tokens ---------- */
.placeholder {
  font-family: var(--font-mono);
  font-size: 0.85em;
  color: var(--danger);
  background: color-mix(in srgb, var(--danger) 12%, transparent);
  border: 1px dashed color-mix(in srgb, var(--danger) 45%, transparent);
  border-radius: 6px;
  padding: 0.1em 0.45em;
  white-space: nowrap;
}

/* ---------- Diagram wrapper ---------- */
.diagram { margin-top: 1.5rem; }
.diagram svg { width: 100%; height: auto; }
.diagram-caption {
  font-size: 0.85rem;
  color: var(--text-faint);
  margin-top: 0.75rem;
}
.diagram-scroll { overflow-x: auto; padding-bottom: 0.25rem; }
.diagram-scroll svg { min-width: 640px; }

/* ---------- Tiered targeting ---------- */
.tiers { display: grid; gap: 1rem; margin-top: 1.5rem; }
.tier {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  background: var(--bg-card);
}
.tier.excluded { opacity: 0.6; }
.tier.target {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, var(--bg-card));
}
.tier-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
}
.tier.target .tier-label { color: var(--accent); }
.tier h3 { margin-top: 0.35rem; }
.tier p { margin-bottom: 0; }

/* ---------- Signal grid ---------- */
.signal-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  margin-top: 1.5rem;
}
.signal-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  background: var(--bg-card);
}
.signal-source {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  margin-bottom: 0.4rem;
}
.signal-card p { margin: 0; font-size: 0.92rem; }
.signal-card.hot { border-color: color-mix(in srgb, var(--accent) 60%, var(--border)); }
.footnote {
  font-size: 0.85rem;
  color: var(--text-faint);
  margin-top: 1.5rem;
  max-width: var(--measure);
}

/* ---------- Lead card sample ---------- */
.lead-card {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  padding: 1.75rem;
  max-width: 480px;
  margin-top: 1.5rem;
}
.lead-card .watermark {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--text-faint);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.25em 0.7em;
  transform: rotate(4deg);
}
.lead-card dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.4rem 1rem;
  margin: 1rem 0 0;
  font-size: 0.92rem;
}
.lead-card dt { color: var(--text-faint); }
.lead-card dd { margin: 0; color: var(--text); }
.lead-score {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  background: color-mix(in srgb, var(--accent) 15%, transparent);
  color: var(--accent);
  border-radius: 999px;
  padding: 0.3em 0.8em;
  font-weight: 700;
  font-size: 0.85rem;
  margin-top: 1rem;
}
.lead-flag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.2em 0.5em;
  margin-top: 0.75rem;
}

/* ---------- Three-column intent ---------- */
.col-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  margin-top: 1.5rem;
}
.col-grid .num {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
}
.tier-badges { display: flex; gap: 0.5rem; margin-top: 1rem; flex-wrap: wrap; }
.tier-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.25em 0.55em;
  color: var(--text-dim);
}
.tier-badge.a { border-color: color-mix(in srgb, var(--accent) 60%, var(--border)); color: var(--accent); }

/* ---------- Numbered points ---------- */
.numbered-list { display: grid; gap: 1.5rem; margin-top: 1.5rem; }
.numbered-item { display: flex; gap: 1.25rem; }
.numbered-item .n {
  flex: none;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 50%;
  border: 1px solid var(--accent);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-family: var(--font-mono);
}
.numbered-item .body h3 { margin-bottom: 0.35rem; }
.numbered-item .body p { margin-bottom: 0; }
.roadmap-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  border: 1px dashed var(--border);
  border-radius: 6px;
  padding: 0.15em 0.5em;
  margin-left: 0.6em;
  vertical-align: middle;
}

/* ---------- Messaging angle cards ---------- */
.angle-card .angle-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  display: block;
  margin-bottom: 0.5rem;
}

/* ---------- Marketplace matrix ---------- */
.matrix-scroll { overflow-x: auto; margin-top: 1.5rem; }
table.matrix {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}
table.matrix caption { text-align: left; margin-bottom: 0.75rem; color: var(--text-faint); font-size: 0.85rem; }
table.matrix th, table.matrix td {
  text-align: left;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  font-size: 0.92rem;
}
table.matrix thead th {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-faint);
  border-bottom: 1px solid var(--border);
}
table.matrix tbody tr:hover { background: color-mix(in srgb, var(--accent) 5%, transparent); }
table.matrix td:first-child { font-weight: 600; color: var(--text); white-space: nowrap; }

.matrix-cards { display: none; }

@media (max-width: 720px) {
  .matrix-scroll { display: none; }
  .matrix-cards {
    display: grid;
    gap: 1rem;
    margin-top: 1.5rem;
  }
  .matrix-cards .card dl { display: grid; gap: 0.6rem; margin: 0.75rem 0 0; }
  .matrix-cards .card dt {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-faint);
  }
  .matrix-cards .card dd { margin: 0.15rem 0 0; color: var(--text-dim); font-size: 0.92rem; }
}

/* ---------- Compliance ---------- */
.compliance-box {
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.5rem 1.75rem;
  background: var(--bg-card);
  margin-top: 1.5rem;
}
.compliance-box p:last-child { margin-bottom: 0; }
.legal-note { font-size: 0.85rem; color: var(--text-faint); margin-top: 1rem; }

/* ---------- Pricing ---------- */
.pricing-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  margin-top: 1.5rem;
  align-items: start;
}
.price-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  background: var(--bg-card);
  position: relative;
}
.price-card.popular {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 30%, transparent) inset;
}
.popular-badge {
  position: absolute;
  top: -0.75rem;
  left: 1.5rem;
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.25em 0.7em;
  border-radius: 999px;
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
}
.price-card .price {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  color: var(--accent);
  margin: 0.5rem 0 1rem;
  display: block;
}
.price-card ul { margin: 0; padding-left: 1.1rem; color: var(--text-dim); font-size: 0.92rem; }
.price-card li { margin-bottom: 0.4rem; }
.pricing-fine { margin-top: 2rem; font-size: 0.85rem; color: var(--text-faint); max-width: 60rem; }
.pricing-fine ul { padding-left: 1.2rem; }
.pricing-fine li { margin-bottom: 0.35rem; }

/* ---------- Why / flywheel ---------- */
.flywheel-wrap { display: grid; gap: 2.5rem; grid-template-columns: 1.1fr 1fr; align-items: center; }
@media (max-width: 860px) { .flywheel-wrap { grid-template-columns: 1fr; } }
.expansion-list { list-style: none; margin: 1.5rem 0 0; padding: 0; display: grid; gap: 0.75rem; }
.expansion-list li {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  font-size: 0.95rem;
  color: var(--text-dim);
  padding: 0.6rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-card);
}
.expansion-list li.current { border-color: var(--accent); color: var(--text); }
.expansion-list .tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 45%, transparent);
  border-radius: 6px;
  padding: 0.1em 0.5em;
}

/* ---------- Contact ---------- */
.contact-steps {
  list-style: none;
  counter-reset: step;
  margin: 1.5rem 0 2rem;
  padding: 0;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.contact-steps li {
  counter-increment: step;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.25rem 1.25rem 3rem;
  background: var(--bg-card);
  position: relative;
  font-size: 0.92rem;
  color: var(--text-dim);
}
.contact-steps li::before {
  content: counter(step);
  position: absolute;
  left: 1.1rem;
  top: 1.2rem;
  font-family: var(--font-mono);
  color: var(--accent);
  font-weight: 700;
}
.contact-secondary { margin-top: 1rem; color: var(--text-faint); font-size: 0.92rem; }

/* ---------- Footer ---------- */
footer.site-footer {
  padding-block: 3rem;
  color: var(--text-faint);
  font-size: 0.85rem;
}
footer.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: center;
}
footer.site-footer a { color: var(--text-faint); }
footer.site-footer a:hover { color: var(--accent); }

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.no-js .reveal { opacity: 1; transform: none; }

/* ---------- Utility ---------- */
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}