/* ============================================================
   Pairvue — landing page styles
   Palette derived directly from the logo:
     navy  #1B2D4F  (radar upper rings)  → backgrounds / depth
     teal  #10B9A8  (radar lower + sweep) → signature accent
   Dark theme. Fonts: Sora (display) / Inter Tight (body).
   ============================================================ */

:root {
  /* Brand */
  --navy-900: #0c1322;
  --navy-800: #0f1a2e;
  --navy-700: #14233d;
  --navy-600: #1b2d4f;   /* logo navy */
  --navy-500: #25406b;
  --teal-500: #10b9a8;   /* logo teal */
  --teal-400: #2dd4bf;
  --teal-300: #5eead4;
  --teal-glow: rgba(16,185,168,.45);

  --bull: #1d9e75;
  --bear: #e0625e;

  /* Surfaces */
  --bg:        var(--navy-900);
  --surface:   rgba(255,255,255,.035);
  --surface-2: rgba(255,255,255,.06);
  --border:    rgba(255,255,255,.09);
  --border-2:  rgba(255,255,255,.14);

  /* Text */
  --text:      #e9eef6;
  --text-soft: #aab6c9;
  --text-dim:  #6f7d93;

  --radius:   16px;
  --radius-sm: 10px;
  --maxw: 1140px;

  --font-display: 'Sora', sans-serif;
  --font-body: 'Inter Tight', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  position: relative;
}

/* Subtle background gradient atmosphere */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 70% -10%, rgba(16,185,168,.10), transparent 60%),
    radial-gradient(ellipse 60% 50% at 10% 10%, rgba(27,45,79,.55), transparent 55%);
  z-index: -2;
  pointer-events: none;
}

/* ---------- Ambient radar backdrop ---------- */
.radar-bg {
  position: fixed;
  top: -180px; right: -180px;
  width: 720px; height: 720px;
  z-index: -1;
  opacity: .5;
  pointer-events: none;
}
.radar-ring {
  position: absolute; inset: 0;
  border-radius: 50%;
  border: 1px solid rgba(16,185,168,.14);
}
.radar-ring.r1 { inset: 0; }
.radar-ring.r2 { inset: 120px; border-color: rgba(16,185,168,.10); }
.radar-ring.r3 { inset: 240px; border-color: rgba(16,185,168,.08); }
.radar-sweep {
  position: absolute; inset: 0;
  border-radius: 50%;
  background: conic-gradient(from 0deg, transparent 0deg, transparent 300deg, rgba(16,185,168,.20) 350deg, rgba(16,185,168,.42) 360deg);
  animation: sweep 8s linear infinite;
}
@keyframes sweep { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .radar-sweep { animation: none; } }

/* ---------- Layout helpers ---------- */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 96px 24px;
}
.section-head { text-align: center; max-width: 680px; margin: 0 auto 56px; }
.section-head h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.7rem, 3.5vw, 2.5rem);
  line-height: 1.15;
  letter-spacing: -.02em;
}
.section-head p { color: var(--text-soft); margin-top: 16px; font-size: 1.05rem; }

/* ---------- Brand ---------- */
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-icon { display: block; }
.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -.01em;
  color: var(--text);
}
.brand-accent { color: var(--teal-400); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: .98rem;
  padding: 13px 22px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-sm { padding: 9px 16px; font-size: .9rem; }
.btn-lg { padding: 16px 28px; font-size: 1.05rem; }
.btn-block { width: 100%; }

.btn-primary {
  background: linear-gradient(135deg, var(--teal-500), var(--teal-400));
  color: #042b27;
  box-shadow: 0 8px 30px -8px var(--teal-glow);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 38px -8px var(--teal-glow); }

.btn-ghost {
  background: var(--surface-2);
  border-color: var(--border-2);
  color: var(--text);
}
.btn-ghost:hover { background: rgba(255,255,255,.1); border-color: var(--teal-500); transform: translateY(-2px); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 24px;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 16px 24px;
  backdrop-filter: blur(14px);
}
.site-header::after {
  content: ''; position: absolute; inset: 0; z-index: -1;
  background: rgba(12,19,34,.6);
  border-bottom: 1px solid var(--border);
}
.site-nav { display: flex; gap: 28px; margin-left: auto; }
.site-nav a {
  color: var(--text-soft); text-decoration: none; font-size: .95rem; font-weight: 500;
  transition: color .15s ease;
}
.site-nav a:hover { color: var(--text); }

/* ---------- Hero ---------- */
.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 80px 24px 64px;
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 56px;
  align-items: center;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono);
  font-size: .82rem;
  color: var(--teal-300);
  background: rgba(16,185,168,.08);
  border: 1px solid rgba(16,185,168,.22);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 24px;
}
.eyebrow .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--teal-400);
  box-shadow: 0 0 10px var(--teal-400);
  animation: pulse 2s ease infinite;
}
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.4} }

.hero-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  line-height: 1.04;
  letter-spacing: -.03em;
}
.hero-title span { display: block; }
.grad {
  background: linear-gradient(120deg, var(--teal-300), var(--teal-500) 70%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub {
  color: var(--text-soft);
  font-size: 1.15rem;
  max-width: 30em;
  margin: 26px 0 32px;
}
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-note {
  margin-top: 22px;
  color: var(--text-dim);
  font-size: .88rem;
  font-family: var(--font-mono);
}

/* Animated entrance */
.hero-inner > * { animation: rise .7s cubic-bezier(.2,.7,.2,1) backwards; }
.hero-inner > *:nth-child(1) { animation-delay: .05s; }
.hero-inner > *:nth-child(2) { animation-delay: .15s; }
.hero-inner > *:nth-child(3) { animation-delay: .25s; }
.hero-inner > *:nth-child(4) { animation-delay: .35s; }
.hero-inner > *:nth-child(5) { animation-delay: .45s; }
@keyframes rise { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .hero-inner > * { animation: none; } }

/* ---------- Hero signal card ---------- */
.hero-visual { animation: rise .8s cubic-bezier(.2,.7,.2,1) .4s backwards; }
.signal-card {
  position: relative;
  background: linear-gradient(180deg, var(--navy-700), var(--navy-800));
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: 0 30px 60px -20px rgba(0,0,0,.6), 0 0 0 1px rgba(16,185,168,.06) inset;
  font-size: .92rem;
}
.signal-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.sig-dir { font-family: var(--font-display); font-weight: 700; font-size: .9rem; }
.sig-dir.bull { color: var(--bull); }
.sig-pair { font-family: var(--font-mono); color: var(--text-soft); font-size: .85rem; }
.sig-price { font-family: var(--font-display); font-weight: 700; font-size: 2rem; letter-spacing: -.02em; }
.sig-price-dec { color: var(--text-dim); font-size: 1.3rem; }
.sig-bar { height: 8px; background: rgba(255,255,255,.07); border-radius: 99px; overflow: hidden; margin: 14px 0 8px; }
.sig-bar span { display: block; height: 100%; background: linear-gradient(90deg, var(--teal-500), var(--teal-400)); border-radius: 99px; }
.sig-votes { font-family: var(--font-mono); font-size: .8rem; color: var(--text-soft); margin-bottom: 16px; }
.sig-votes em { font-style: normal; color: var(--text-dim); }
.sig-rows { list-style: none; display: grid; gap: 9px; padding: 14px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.sig-rows li { display: flex; align-items: center; gap: 9px; font-size: .88rem; }
.sig-rows li em { font-style: normal; color: var(--text-soft); margin-left: auto; font-family: var(--font-mono); font-size: .8rem; }
.sig-rows .dot { width: 8px; height: 8px; border-radius: 50%; flex: none; }
.dot.bull { background: var(--bull); box-shadow: 0 0 8px rgba(29,158,117,.6); }
.dot.bear { background: var(--bear); box-shadow: 0 0 8px rgba(224,98,94,.6); }
.sig-foot { display: flex; justify-content: space-between; margin-top: 14px; font-family: var(--font-mono); font-size: .78rem; color: var(--text-soft); }
.placeholder-tag {
  display: block;
  text-align: center;
  margin-top: 12px;
  font-family: var(--font-mono); font-size: .72rem;
  color: var(--teal-300);
  letter-spacing: .02em;
}

/* ---------- Trust strip ---------- */
.trust {
  max-width: var(--maxw); margin: 0 auto;
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding: 0 24px;
}
.trust-item {
  text-align: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 24px 12px;
}
.trust-item strong {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 2.3rem;
  color: var(--teal-400);
  line-height: 1;
}
.trust-item span { color: var(--text-soft); font-size: .88rem; }

/* ---------- Features ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}
.feature:hover { transform: translateY(-4px); border-color: rgba(16,185,168,.3); background: var(--surface-2); }
.feature-icon { font-size: 1.7rem; margin-bottom: 14px; }
.feature h3 { font-family: var(--font-display); font-weight: 600; font-size: 1.15rem; margin-bottom: 8px; }
.feature p { color: var(--text-soft); font-size: .96rem; }

/* ---------- How it works ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.step {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
}
.step-num {
  font-family: var(--font-mono);
  font-size: 2.2rem; font-weight: 500;
  color: rgba(16,185,168,.35);
  display: block; margin-bottom: 10px;
}
.step h3 { font-family: var(--font-display); font-weight: 600; font-size: 1.2rem; margin-bottom: 8px; }
.step p { color: var(--text-soft); font-size: .96rem; }

/* ---------- Pricing ---------- */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; align-items: start; }
.plan {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 26px;
}
.plan-featured {
  border-color: rgba(16,185,168,.5);
  background: linear-gradient(180deg, rgba(16,185,168,.08), var(--surface));
  box-shadow: 0 20px 50px -24px var(--teal-glow);
}
.plan-badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  font-family: var(--font-display); font-weight: 600; font-size: .72rem;
  background: linear-gradient(135deg, var(--teal-500), var(--teal-400));
  color: #042b27; padding: 5px 14px; border-radius: 99px;
}
.plan h3 { font-family: var(--font-display); font-weight: 600; font-size: 1.3rem; margin-bottom: 10px; }
.plan-price { font-family: var(--font-display); font-weight: 800; font-size: 2.6rem; letter-spacing: -.02em; margin-bottom: 22px; }
.plan-price em { font-style: normal; font-size: 1rem; font-weight: 500; color: var(--text-dim); }
.plan ul { list-style: none; display: grid; gap: 11px; margin-bottom: 26px; }
.plan li { color: var(--text-soft); font-size: .95rem; padding-left: 26px; position: relative; }
.plan li::before {
  content: '✓'; position: absolute; left: 0; top: 0;
  color: var(--teal-400); font-weight: 700;
}

/* ---------- Email capture ---------- */
.capture-inner {
  max-width: 620px; margin: 0 auto; text-align: center;
  background: linear-gradient(180deg, var(--navy-700), var(--navy-800));
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  padding: 48px 36px;
}
.capture-inner h2 { font-family: var(--font-display); font-weight: 700; font-size: 1.8rem; }
.capture-inner p { color: var(--text-soft); margin: 12px 0 26px; }
.capture-form { display: flex; gap: 10px; max-width: 460px; margin: 0 auto; }
.capture-form input {
  flex: 1; padding: 14px 16px;
  background: rgba(0,0,0,.25);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-sm);
  color: var(--text); font-family: var(--font-body); font-size: 1rem;
}
.capture-form input:focus { outline: none; border-color: var(--teal-500); box-shadow: 0 0 0 3px rgba(16,185,168,.18); }
.capture-msg { margin-top: 14px; font-size: .9rem; min-height: 1.2em; color: var(--teal-300); }

/* ---------- FAQ ---------- */
.faq { max-width: 760px; margin: 0 auto; display: grid; gap: 12px; }
.faq details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 4px 22px;
  transition: border-color .2s ease;
}
.faq details[open] { border-color: rgba(16,185,168,.3); }
.faq summary {
  font-family: var(--font-display); font-weight: 600; font-size: 1.05rem;
  cursor: pointer; padding: 18px 0; list-style: none;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: '+'; color: var(--teal-400); font-size: 1.4rem; font-weight: 400;
  transition: transform .2s ease;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq p { color: var(--text-soft); padding: 0 0 20px; font-size: .98rem; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); margin-top: 40px; }
.footer-grid {
  max-width: var(--maxw); margin: 0 auto;
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1fr; gap: 32px;
  padding: 56px 24px 40px;
}
.footer-tag { color: var(--text-dim); font-size: .9rem; margin-top: 12px; }
.footer-col h4 { font-family: var(--font-display); font-weight: 600; font-size: .95rem; margin-bottom: 14px; }
.footer-col a { display: block; color: var(--text-soft); text-decoration: none; font-size: .92rem; margin-bottom: 10px; transition: color .15s ease; }
.footer-col a:hover { color: var(--teal-300); }
.footer-bottom {
  max-width: var(--maxw); margin: 0 auto;
  padding: 24px; border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap;
}
.disclaimer { color: var(--text-dim); font-size: .8rem; max-width: 60ch; }
.copyright { color: var(--text-dim); font-size: .82rem; }

/* ---------- Mobile menu (hamburger + slide-down) ---------- */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px; height: 42px;
  margin-left: auto;
  background: var(--surface-2);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 0 11px;
}
.nav-toggle span {
  display: block; height: 2px; width: 100%;
  background: var(--text);
  border-radius: 2px;
  transition: transform .25s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  top: 73px; left: 0; right: 0;
  z-index: 49;
  background: var(--navy-900);
  border-bottom: 1px solid var(--border-2);
  box-shadow: 0 24px 48px -12px rgba(0,0,0,.6);
  padding: 16px 24px 24px;
  transform: translateY(-12px);
  opacity: 0;
  transition: transform .25s ease, opacity .25s ease;
}
.mobile-menu:not([hidden]) { animation: menuIn .25s ease forwards; }
@keyframes menuIn { to { transform: translateY(0); opacity: 1; } }
.mobile-nav { display: flex; flex-direction: column; }
.mobile-nav a {
  color: var(--text);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.1rem;
  padding: 14px 4px;
  border-bottom: 1px solid var(--border);
}
.mobile-cta { display: grid; gap: 10px; margin-top: 18px; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: 48px; }
  .hero-visual { max-width: 420px; }
  .feature-grid, .steps, .pricing-grid { grid-template-columns: 1fr; }
  .trust { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .site-nav { display: none; }
  .header-cta { display: none; }
  .nav-toggle { display: flex; }
}
@media (max-width: 540px) {
  .section { padding: 64px 20px; }
  .capture-form { flex-direction: column; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}