/* AltiTrace — DJI-style reference lock
   Canvas #fff · Hero/dark #000 · Accent #0070d5 (interactive only)
   Open Sans · display w300 -0.03em · pills 99px · cards 4px */

:root {
  --midnight: #000000;
  --arctic: #ffffff;
  --glacial: #f7f9fa;
  --platinum: #ededed;
  --charcoal: #272727;
  --storm: #6c7073;
  --slate: #595959;
  --ash: #8c8c8c;
  --blue: #0070d5;
  --blue-hover: #2490e3;
  --blue-active: #0058b0;
  --shadow-card: rgba(0, 0, 0, 0.1) 0px 8px 16px 0px;
  --font: 'Open Sans', system-ui, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  color: var(--midnight);
  background: var(--arctic);
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 1160px; margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 760px; }
.center { text-align: center; }

/* ---------- Nav ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(12px);
  transition: background 0.3s ease;
}
.nav-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  gap: 40px;
}
.wordmark {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.22em;
  color: var(--arctic);
  text-decoration: none;
}
.wordmark span { font-weight: 300; color: var(--ash); }
.nav-links { display: flex; gap: 28px; margin-left: auto; }
.nav-links a {
  color: rgba(255, 255, 255, 0.72);
  text-decoration: none;
  font-size: 14px;
  letter-spacing: -0.02em;
  transition: color 0.2s ease;
}
.nav-links a:hover { color: var(--arctic); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font);
  font-size: 16px;
  font-weight: 500;
  text-decoration: none;
  border-radius: 99px;
  padding: 10px 24px;
  cursor: pointer;
  border: none;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.btn-sm { font-size: 13px; padding: 6px 16px; }
.btn-blue { background: var(--blue); color: var(--arctic); }
.btn-blue:hover { background: var(--blue-hover); }
.btn-blue:active { background: var(--blue-active); }
.btn-ghost-light {
  background: transparent;
  color: var(--arctic);
  border: 1px solid rgba(255, 255, 255, 0.55);
}
.btn-ghost-light:hover { border-color: var(--arctic); }

/* ---------- Eyebrow (borrowed: Superlative condensed labels) ---------- */
.eyebrow {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.32em;
  color: var(--ash);
  margin-bottom: 20px;
}
.eyebrow-dark { color: var(--storm); }

/* ---------- Hero ---------- */
.hero {
  background: var(--midnight);
  color: var(--arctic);
  text-align: center;
  padding: 140px 24px 0;
  overflow: hidden;
}
.hero h1 {
  font-size: clamp(36px, 5.4vw, 56px);
  font-weight: 300;
  letter-spacing: -0.03em;
  line-height: 1.1;
  text-wrap: balance;
}
.hero-sub {
  max-width: 560px;
  margin: 24px auto 0;
  font-size: 17px;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.66);
  text-wrap: pretty;
}
.hero-actions {
  margin-top: 32px;
  display: flex;
  gap: 14px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}
.hero-visual { max-width: 900px; margin: 24px auto 0; }
.hero-svg { width: 100%; height: auto; display: block; }

/* signal ring pulse */
.ring { transform-origin: 450px 150px; animation: pulse 5s ease-out infinite; }
.r2 { animation-delay: 1.2s; }
.r3 { animation-delay: 2.4s; }
.r4 { animation-delay: 3.6s; }
@keyframes pulse {
  0%   { transform: scale(0.92); opacity: 1; }
  70%  { opacity: 0.4; }
  100% { transform: scale(1.12); opacity: 0; }
}
.status-dot { animation: blink 2.4s ease-in-out infinite; }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.25; } }
.tag { opacity: 0; animation: tagIn 0.8s ease forwards; }
.t1 { animation-delay: 0.6s; }
.t2 { animation-delay: 1.3s; }
@keyframes tagIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

@media (prefers-reduced-motion: reduce) {
  .ring, .status-dot, .tag { animation: none; opacity: 1; }
}

.hero-ticker {
  display: flex;
  justify-content: center;
  gap: 72px;
  padding: 36px 0 56px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  max-width: 860px;
  margin: 0 auto;
  flex-wrap: wrap;
}
.tick { display: flex; flex-direction: column; gap: 6px; }
.tick-num {
  font-size: 32px;
  font-weight: 300;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}
.tick-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.28em;
  color: var(--ash);
}

/* ---------- Sections ---------- */
.section { padding: 104px 0; }
.section-light { background: var(--arctic); }
.section-gray { background: var(--glacial); }
.section-dark { background: var(--midnight); color: var(--arctic); }

.section h2 {
  font-size: clamp(30px, 4vw, 40px);
  font-weight: 300;
  letter-spacing: -0.03em;
  line-height: 1.13;
  text-wrap: balance;
}
.lede {
  margin-top: 20px;
  font-size: 17px;
  color: var(--slate);
  text-wrap: pretty;
}
.lede-light {
  margin-top: 20px;
  font-size: 17px;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.66);
  text-wrap: pretty;
}

/* ---------- Cards / steps ---------- */
.card {
  background: var(--platinum);
  border-radius: 4px;
  box-shadow: var(--shadow-card);
  padding: 32px;
}
.steps {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.step-num {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.28em;
  color: var(--blue);
  margin-bottom: 16px;
}
.step h3, .vert h3 {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}
.step p, .vert p { font-size: 14px; line-height: 1.6; color: var(--slate); }

/* ---------- Node split ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 64px;
  align-items: center;
}
.node-svg { width: 100%; max-width: 380px; height: auto; display: block; margin: 0 auto; }

.spec-table {
  margin-top: 28px;
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.spec-table td {
  padding: 11px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.86);
}
.spec-table td:first-child {
  width: 130px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ash);
  vertical-align: top;
  padding-top: 14px;
}
.spec-table strong { font-weight: 600; color: var(--arctic); }
.ship-note { font-size: 13px; color: var(--ash); }

/* ---------- Hex map ---------- */
.hexmap-wrap {
  margin-top: 56px;
  background: var(--midnight);
  border-radius: 4px;
  box-shadow: var(--shadow-card);
  padding: 28px;
}
.hexmap { width: 100%; height: auto; display: block; }

/* ---------- Verticals ---------- */
.verticals {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.verticals .card { background: var(--arctic); }

/* ---------- Reserve ---------- */
.reserve-form {
  margin-top: 36px;
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}
.reserve-form input {
  font-family: var(--font);
  font-size: 16px;
  color: var(--arctic);
  background: transparent;
  border: 1px solid var(--storm);
  border-radius: 99px;
  padding: 10px 20px;
  width: 300px;
  outline: none;
  transition: border-color 0.2s ease;
}
.reserve-form input::placeholder { color: var(--ash); }
.reserve-form input:focus { border-color: var(--blue); }
.form-note { margin-top: 16px; font-size: 13px; color: var(--ash); }

/* ---------- Footer ---------- */
.footer {
  background: var(--charcoal);
  color: rgba(255, 255, 255, 0.7);
  padding: 56px 0 32px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 32px;
  flex-wrap: wrap;
}
.wordmark-footer { font-size: 15px; }
.footer-tag { margin-top: 10px; font-size: 13px; color: var(--ash); }
.footer-links { display: flex; gap: 24px; }
.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 13px;
}
.footer-links a:hover { color: var(--arctic); }
.footer-legal {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--ash);
}

/* ---------- Scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .steps { grid-template-columns: 1fr; }
  .verticals { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .nav-links { display: none; }
  .hero-ticker { gap: 40px; }
}
@media (max-width: 560px) {
  .verticals { grid-template-columns: 1fr; }
  .section { padding: 72px 0; }
  .reserve-form input { width: 100%; }
}