/* AirTrace Ops — field-manual / spec-sheet aesthetic.
   Paper ground, ink text, one signal orange, mono telemetry. */

:root {
  --paper: #f4f1ea;
  --paper-2: #ece8de;
  --ink: #16181d;
  --ink-soft: #565b63;
  --rule: #cfc9bb;
  --signal: #e8501a;
  --live: #2e9e5b;
  --screen: #101511;      /* telemetry panel */
  --screen-text: #b8e6c4;
  --display: "Barlow Condensed", sans-serif;
  --body: "Barlow", sans-serif;
  --mono: "IBM Plex Mono", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--body);
  font-size: 1.0625rem;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.55;
  /* faint blueprint grid */
  background-image:
    linear-gradient(var(--rule) 1px, transparent 1px),
    linear-gradient(90deg, var(--rule) 1px, transparent 1px);
  background-size: 96px 96px;
  background-position: center top;
}

.wrap { width: min(1080px, 92vw); margin: 0 auto; }

a { color: var(--ink); text-decoration-color: var(--signal); text-underline-offset: 3px; }
a:hover { color: var(--signal); }

::selection { background: var(--signal); color: var(--paper); }

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--paper) 97%, transparent);
  backdrop-filter: blur(6px);
  border-bottom: 2px solid var(--ink);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 0;
  gap: 1rem;
}
.logo {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 1.05rem;
  letter-spacing: 0.08em;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
}
.logo-mark { height: 2.8em; width: auto; flex: none; }
.logo-tick { color: var(--signal); margin-left: 0.15em; font-size: 0.7em; vertical-align: 0.2em; }
nav { display: flex; gap: 1.5rem; align-items: center; flex-wrap: wrap; }
nav a {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink-soft);
}
nav a:hover { color: var(--signal); }
.nav-cta {
  color: var(--paper) !important;
  background: var(--ink);
  padding: 0.5rem 0.9rem;
}
.nav-cta:hover { background: var(--signal); }

/* ---------- buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: var(--signal);
  color: var(--paper);
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
  padding: 0.8rem 1.5rem;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.1s, box-shadow 0.1s;
}
.btn:hover { color: var(--paper); transform: translate(2px, 2px); box-shadow: 2px 2px 0 var(--ink); }
.btn:active { transform: translate(4px, 4px); box-shadow: 0 0 0 var(--ink); }
.btn-plain {
  font-family: var(--mono);
  font-size: 0.85rem;
  align-self: center;
  text-decoration: none;
  border-bottom: 1px solid var(--signal);
}

/* ---------- hero ---------- */
.hero { padding: 5rem 0 4.5rem; border-bottom: 2px solid var(--ink); }
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3.5rem;
  align-items: center;
}
.doc-ref {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--signal);
  margin: 0 0 1rem;
}
.hero h1 {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(2.75rem, 6.5vw, 4.5rem);
  line-height: 0.95;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  margin: 0 0 1.25rem;
}
.hero h1 em { font-style: normal; color: var(--signal); }
.lead { color: var(--ink-soft); max-width: 34em; margin: 0; }
.hero-cta { display: flex; gap: 1.5rem; margin-top: 2rem; flex-wrap: wrap; }

/* animated load-in */
.hero-copy > * { animation: rise 0.5s both; }
.hero-copy > *:nth-child(2) { animation-delay: 0.07s; }
.hero-copy > *:nth-child(3) { animation-delay: 0.14s; }
.hero-copy > *:nth-child(4) { animation-delay: 0.21s; }
.telemetry { animation: rise 0.5s 0.25s both; }
@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  .hero-copy > *, .telemetry { animation: none; }
  .cursor { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---------- telemetry panel ---------- */
.telemetry {
  margin: 0;
  background: var(--screen);
  border: 2px solid var(--ink);
  box-shadow: 8px 8px 0 var(--ink);
}
.telemetry-head {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--screen-text);
  padding: 0.6rem 0.9rem;
  border-bottom: 1px solid #2a3a2e;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.dot.live { background: var(--live); box-shadow: 0 0 6px var(--live); }
.telemetry-body {
  margin: 0;
  padding: 1rem 0.9rem 1.1rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--screen-text);
  overflow-x: auto;
}
.telemetry-body .warn { color: #ffb454; font-weight: 500; }
.cursor { animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* ---------- coverage diagram ---------- */
.coverage { padding: 3.5rem 0 0; }
.coverage-fig {
  margin: 0;
  background: var(--paper);
  border: 2px solid var(--ink);
  box-shadow: 8px 8px 0 var(--ink);
}
.coverage-svg { display: block; width: 100%; height: auto; }
.coverage-svg .ink { stroke: var(--ink); stroke-width: 2; fill: none; }
.coverage-svg .thin { stroke-width: 1.25; }
.coverage-svg .sig { stroke: var(--signal); stroke-width: 2; fill: none; }
.coverage-svg .fill { fill: var(--ink); stroke: none; }
.coverage-svg .sig.fill, .coverage-svg .sig .fill { fill: var(--signal); stroke: none; }
.coverage-svg .ring { stroke: var(--rule); stroke-width: 1; fill: none; stroke-dasharray: 4 5; }
.coverage-svg .link { stroke: var(--ink-soft); stroke-width: 1; fill: none; stroke-dasharray: 2 4; opacity: 0.6; }
.coverage-svg .ray { stroke: var(--signal); stroke-width: 1.25; opacity: 0.55; }
.coverage-svg .track { stroke: var(--signal); stroke-width: 2; fill: none; stroke-dasharray: 7 6; }
.coverage-svg .lbl { font-family: var(--mono); font-size: 11.5px; fill: var(--ink-soft); }
.coverage-svg .lbl.mid { font-size: 14px; letter-spacing: 0.2em; fill: var(--ink); }
.coverage-svg .sigtext { fill: var(--signal); }
.fig-cap {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
  padding: 0.6rem 1rem;
  border-top: 1px solid var(--rule);
}

/* ---------- inline glyphs ---------- */
.step-glyph, .offer-icon {
  stroke: var(--ink);
  stroke-width: 1.75;
  fill: none;
  stroke-linecap: square;
}
.step-glyph { width: 30px; height: 30px; display: block; margin: 0.9rem 0 0; }
.step-glyph .fill, .offer-icon .fill { fill: var(--ink); stroke: none; }
.offer-icon { width: 54px; height: 54px; stroke-width: 2; margin-bottom: 0.9rem; }
.offer-icon .soft { stroke: var(--signal); }

/* ---------- rx-only stamp ---------- */
.stamp {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.9rem;
  letter-spacing: 0.18em;
  color: var(--signal);
  border: 2px solid var(--signal);
  outline: 1px solid var(--signal);
  outline-offset: 3px;
  padding: 0.45rem 0.9rem;
  transform: rotate(-6deg);
  margin: 0 0 1.5rem;
  opacity: 0.85;
}

/* ---------- sections ---------- */
.section { padding: 4.5rem 0; }
.section.ruled { background: var(--paper-2); border-top: 2px solid var(--ink); border-bottom: 2px solid var(--ink); }
.section-head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 0.75rem;
}
.section-no {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--signal);
}
.section h2 {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  text-transform: uppercase;
  margin: 0;
}
.section-sub { color: var(--ink-soft); margin: 0 0 2.5rem; }

/* ---------- pipeline (how it works) ---------- */
.pipeline {
  list-style: none;
  counter-reset: none;
  margin: 2rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 2px solid var(--ink);
  background: var(--paper);
}
.pipeline li { padding: 1.5rem 1.25rem 1.75rem; border-right: 1px solid var(--rule); }
.pipeline li:last-child { border-right: none; }
.step-no {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--paper);
  background: var(--ink);
  display: inline-block;
  width: 1.7em;
  height: 1.7em;
  line-height: 1.7em;
  text-align: center;
}
.pipeline h3 {
  font-family: var(--display);
  font-size: 1.35rem;
  text-transform: uppercase;
  margin: 0.75rem 0 0.4rem;
}
.pipeline p { margin: 0; font-size: 0.95rem; color: var(--ink-soft); }
.fine-note { margin-top: 1.25rem; font-family: var(--mono); font-size: 0.78rem; color: var(--ink-soft); }

/* ---------- scenarios ---------- */
.scenario-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}
.scenario {
  background: var(--paper);
  border: 2px solid var(--ink);
  padding: 1.75rem 1.75rem 1.5rem;
}
.scenario-featured {
  grid-column: 1 / -1;
  border-color: var(--signal);
  box-shadow: 6px 6px 0 var(--ink);
}
.scenario-tag {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--signal);
  margin: 0 0 0.5rem;
}
.scenario h3 {
  font-family: var(--display);
  font-size: 1.65rem;
  text-transform: uppercase;
  margin: 0 0 0.6rem;
}
.scenario > p { color: var(--ink-soft); margin: 0 0 1rem; }
.scenario > p strong { color: var(--ink); }
.scenario-bullets {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 0.75rem 0 0;
  border-top: 1px solid var(--rule);
}
.scenario-bullets li {
  position: relative;
  padding: 0.35rem 0 0.35rem 1.1rem;
  font-size: 0.92rem;
  color: var(--ink-soft);
}
.scenario-bullets li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--signal);
  font-family: var(--mono);
}
.scenario-demo {
  display: grid;
  grid-template-columns: minmax(260px, 0.9fr) 1.4fr;
  gap: 1.5rem;
  margin: 1.5rem 0 0.5rem;
  align-items: stretch;
}
.scenario-telemetry { box-shadow: 4px 4px 0 var(--ink); }
.scenario-fig { margin: 0; }
.coverage-svg .fire-zone {
  stroke: var(--signal);
  stroke-width: 2;
  fill: color-mix(in srgb, var(--signal) 12%, transparent);
  stroke-dasharray: 8 6;
}
.coverage-svg .smoke {
  stroke: var(--ink-soft);
  stroke-width: 1.25;
  fill: none;
  opacity: 0.35;
  stroke-dasharray: 3 5;
}
.coverage-svg .hold {
  stroke: var(--ink-soft);
  stroke-width: 1.5;
  fill: none;
  stroke-dasharray: 5 6;
  opacity: 0.7;
}
.coverage-svg .restrict-zone {
  stroke: var(--signal);
  stroke-width: 1.5;
  fill: color-mix(in srgb, var(--signal) 8%, transparent);
  stroke-dasharray: 6 5;
}

/* ---------- offers ---------- */
.offer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.offer {
  background: var(--paper);
  border: 2px solid var(--ink);
  padding: 1.75rem 1.75rem 1.5rem;
  position: relative;
}
.offer-tag {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--signal);
  margin: 0 0 0.5rem;
}
.offer h3 {
  font-family: var(--display);
  font-size: 1.9rem;
  text-transform: uppercase;
  margin: 0 0 0.6rem;
}
.offer > p { color: var(--ink-soft); margin: 0 0 1.25rem; }
.spec-list { list-style: none; margin: 0 0 1.5rem; padding: 0; }
.spec-list li {
  display: grid;
  grid-template-columns: 6.5rem 1fr;
  gap: 0.75rem;
  padding: 0.5rem 0;
  border-top: 1px solid var(--rule);
  font-size: 0.95rem;
}
.spec-list li span {
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  padding-top: 0.2em;
}
.offer-price {
  margin: 0;
  padding-top: 1rem;
  border-top: 2px solid var(--ink);
  font-family: var(--mono);
  font-size: 0.9rem;
}
.offer-price a { color: var(--signal); text-decoration: none; }
.offer-price a:hover { text-decoration: underline; }

/* ---------- compliance ---------- */
.compliance-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 3rem; align-items: start; }
.compliance-copy p { margin: 0 0 1rem; max-width: 38em; }
.compliance-copy strong { color: var(--signal); }

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 3rem; align-items: start; }
.contact-form { display: grid; gap: 1.1rem; }
.contact-form label {
  display: grid;
  gap: 0.35rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}
.contact-form input,
.contact-form select,
.contact-form textarea {
  font-family: var(--body);
  font-size: 1rem;
  padding: 0.7rem 0.8rem;
  border: 2px solid var(--ink);
  border-radius: 0;
  background: var(--paper);
  color: var(--ink);
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: 2px solid var(--signal);
  outline-offset: 1px;
}
.form-status { min-height: 1.5rem; font-size: 0.85rem; }
.form-status.ok { color: var(--live); }
.form-status.err { color: var(--signal); }

/* ---------- footer ---------- */
.site-footer {
  border-top: 2px solid var(--ink);
  padding: 2rem 0 2.5rem;
  background: var(--paper-2);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-brand { font-family: var(--mono); font-size: 0.78rem; color: var(--ink-soft); margin: 0; }
.site-footer nav a { font-size: 0.75rem; }

/* ---------- placeholder pages ---------- */
.stub { padding: 5rem 0 8rem; min-height: 55vh; }
.stub h1 {
  font-family: var(--display);
  font-size: clamp(2rem, 5vw, 3rem);
  text-transform: uppercase;
  margin: 0 0 1rem;
}
.stub p { color: var(--ink-soft); max-width: 36em; }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .pipeline { grid-template-columns: 1fr 1fr; }
  .pipeline li:nth-child(-n+2) { border-bottom: 1px solid var(--rule); }
  .pipeline li:nth-child(2) { border-right: none; }
}
@media (max-width: 760px) {
  .hero { padding: 3rem 0; }
  .hero-grid, .offer-grid, .compliance-grid, .contact-grid, .scenario-grid, .scenario-demo { grid-template-columns: 1fr; gap: 2rem; }
  .scenario-featured { grid-column: auto; }
  nav a:not(.nav-cta) { display: none; }
  .site-footer nav a { display: inline; }
}
@media (max-width: 520px) {
  .pipeline { grid-template-columns: 1fr; }
  .pipeline li { border-right: none; border-bottom: 1px solid var(--rule); }
  .pipeline li:last-child { border-bottom: none; }
}

/* ---------- configurator (unlisted /configurator.html) ---------- */
.cfg-page .cfg-logo { text-decoration: none; }
.cfg-badge {
  font-size: 0.65rem;
  color: var(--signal);
  border: 1px solid var(--signal);
  padding: 0.15rem 0.45rem;
  margin-left: 0.5rem;
  vertical-align: middle;
}
.cfg-main { padding: 2.5rem 0 4rem; }
.cfg-title {
  font-family: var(--display);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  text-transform: uppercase;
  margin: 0 0 0.5rem;
}
.cfg-lead { color: var(--ink-soft); max-width: 42em; margin: 0 0 2rem; }
.cfg-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.95fr) 1.25fr;
  gap: 1.75rem;
  align-items: start;
}
.cfg-panel {
  background: var(--paper);
  border: 2px solid var(--ink);
  padding: 1.25rem 1.35rem 1.5rem;
  margin-bottom: 1.25rem;
}
.cfg-panel-head {
  font-family: var(--display);
  font-size: 1.25rem;
  text-transform: uppercase;
  margin: 0 0 1rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
}
.cfg-est { font-family: var(--mono); color: var(--signal); font-size: 1rem; }
.cfg-field {
  display: grid;
  gap: 0.35rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  margin-bottom: 0.9rem;
}
.cfg-field select,
.cfg-field input[type="number"] {
  font-family: var(--body);
  font-size: 1rem;
  padding: 0.55rem 0.65rem;
  border: 2px solid var(--ink);
  background: var(--paper);
  color: var(--ink);
}
.cfg-field input[type="range"] { width: 100%; accent-color: var(--signal); }
.cfg-range-val { font-size: 0.85rem; color: var(--ink); }
.cfg-fieldset {
  border: 1px solid var(--rule);
  padding: 0.75rem 0.85rem 0.25rem;
  margin: 0 0 1rem;
}
.cfg-fieldset legend {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--signal);
  padding: 0 0.35rem;
}
.cfg-check {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin-bottom: 0.5rem;
  text-transform: none;
  letter-spacing: 0;
  font-family: var(--body);
}
.cfg-out-desc { color: var(--ink-soft); margin: -0.5rem 0 1rem; }
.cfg-spec { margin: 0; }
.cfg-spec div {
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: 0.75rem;
  padding: 0.45rem 0;
  border-top: 1px solid var(--rule);
  font-size: 0.95rem;
}
.cfg-spec dt {
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  margin: 0;
}
.cfg-spec dd { margin: 0; }
.cfg-arch {
  font-family: var(--mono);
  font-size: 0.78rem;
  background: var(--screen);
  color: var(--screen-text);
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--ink);
  margin: 1rem 0 0.5rem;
  overflow-x: auto;
}
.cfg-notes { margin-top: 0.75rem; }
.cfg-table-wrap { overflow-x: auto; }
.cfg-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.cfg-table th {
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  text-align: left;
  border-bottom: 2px solid var(--ink);
  padding: 0.4rem 0.5rem;
}
.cfg-table td {
  border-bottom: 1px solid var(--rule);
  padding: 0.45rem 0.5rem;
}
.cfg-table .num { text-align: right; font-family: var(--mono); font-size: 0.85rem; }
.cfg-json {
  width: 100%;
  font-family: var(--mono);
  font-size: 0.72rem;
  line-height: 1.5;
  border: 2px solid var(--ink);
  background: var(--paper-2);
  padding: 0.65rem;
  resize: vertical;
}
.cfg-btn-sm { padding: 0.45rem 0.85rem; font-size: 0.75rem; box-shadow: 3px 3px 0 var(--ink); }
.cfg-copy-status { font-family: var(--mono); font-size: 0.75rem; color: var(--live); }
@media (max-width: 900px) {
  .cfg-grid { grid-template-columns: 1fr; }
}

.footer-brand { display: inline-flex; align-items: center; gap: 0.45em; }
.footer-mark { height: 1.5em; width: auto; flex: none; }

.logo-word { font-family: var(--display); font-weight: 600; font-size: 2rem; letter-spacing: 0.03em; line-height: 1; display: inline-flex; align-items: center; gap: 0.3em; }
.logo-ops { font-size: 0.56em; letter-spacing: 0.18em; color: var(--signal); border: 1.5px solid var(--ink-soft); padding: 0.06em 0.28em 0.06em 0.4em; }