/* ============================================================
   TraceWire — "Blueprint" design system
   Grounded in real fiber/OSP subject matter: TIA-598 fiber color
   code, engineering-drawing linework, title-block conventions.
   ============================================================ */

:root {
  /* Blueprint core — deep Prussian-blue, not near-black */
  --bg: #0b2a47;
  --bg-raised: #10375c;
  --bg-raised-2: #154269;

  /* Linework — real blueprint drafting blues/cyans */
  --line: #3f6f94;
  --line-dim: #274c6b;
  --line-bright: #7dd3e8;

  /* Ink */
  --ink: #eaf2f8;
  --ink-dim: #9fb8cc;
  --ink-faint: #6f8ba3;

  /* The two working accents — used functionally, not decoratively */
  --safety-orange: #e8791a;
  --safety-orange-bright: #ff9636;
  --fiber-green: #3fa562;

  --radius: 3px;
  --font-display: "Big Shoulders Display", sans-serif;
  --font-body: "IBM Plex Sans", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

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

  /* Faint graph-paper texture — blueprints are drafted on a grid */
  background-image:
    linear-gradient(var(--line-dim) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-dim) 1px, transparent 1px);
  background-size: 48px 48px;
  background-position: -1px -1px;
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

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

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 28px; }

/* ---------- Nav ---------- */
nav {
  border-bottom: 1px solid var(--line-dim);
  background: rgba(11, 42, 71, 0.92);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 40;
}
.nav-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 18px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 24px;
  letter-spacing: 0.01em;
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo-mark { width: 22px; height: 22px; }
.nav-links { display: flex; gap: 32px; font-size: 14.5px; }
.nav-links a { color: var(--ink-dim); transition: color 0.15s; }
.nav-links a:hover { color: var(--line-bright); }
.nav-cta { display: flex; align-items: center; gap: 14px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 11px 22px;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14.5px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s;
}
.btn-primary { background: var(--safety-orange); color: #1a0d00; }
.btn-primary:hover { background: var(--safety-orange-bright); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--line-bright); color: var(--line-bright); }
.btn-sm { padding: 8px 16px; font-size: 13.5px; }

/* ---------- Hero — asymmetric, technical-drawing led ---------- */
.hero {
  padding: 76px 0 90px;
  border-bottom: 1px solid var(--line-dim);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
}

.hero-copy h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(40px, 5.2vw, 62px);
  line-height: 1.03;
  letter-spacing: -0.01em;
  margin: 0 0 22px;
}
.hero-copy p {
  color: var(--ink-dim);
  font-size: 17.5px;
  max-width: 46ch;
  margin: 0 0 30px;
}
.hero-ctas { display: flex; gap: 14px; margin-bottom: 22px; }
.hero-note {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-faint);
  border-left: 2px solid var(--line);
  padding-left: 10px;
}

/* The one bold, memorable moment: a genuine technical-drawing panel */
.dwg-panel {
  border: 1px solid var(--line);
  background: var(--bg-raised);
  position: relative;
}
.dwg-panel svg { display: block; width: 100%; height: auto; }
.dwg-titleblock {
  border-top: 1px solid var(--line);
  padding: 10px 16px;
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--ink-faint);
  letter-spacing: 0.02em;
}
.dwg-titleblock span b { color: var(--ink-dim); font-weight: 500; }

/* ---------- Spec-sheet section (replaces the generic card grid) ---------- */
.spec-section { padding: 84px 0; border-bottom: 1px solid var(--line-dim); }
.spec-head { max-width: 640px; margin-bottom: 48px; }
.spec-head h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 3.4vw, 38px);
  margin: 0 0 12px;
  letter-spacing: -0.005em;
}
.spec-head p { color: var(--ink-dim); font-size: 16px; margin: 0; }

.spec-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 28px;
  padding: 26px 0;
  border-top: 1px solid var(--line-dim);
  align-items: start;
}
.spec-row:last-child { border-bottom: 1px solid var(--line-dim); }
@media (max-width: 720px) {
  .spec-row { grid-template-columns: 1fr; gap: 10px; }
}

.spec-tag {
  padding-top: 6px;
}
.spec-body h3 {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 19px;
  margin: 0 0 8px;
}
.spec-body p {
  color: var(--ink-dim);
  font-size: 15px;
  margin: 0;
  max-width: 62ch;
}

/* Fiber-color swatch used as a real functional index, not decoration */
.swatch {
  display: inline-block;
  width: 9px;
  height: 9px;
  margin-right: 7px;
  vertical-align: middle;
  border-radius: 1px;
}

/* ---------- Demo band ---------- */
.demo-band {
  padding: 70px 0;
  text-align: center;
  border-bottom: 1px solid var(--line-dim);
  background: var(--bg-raised);
}
.demo-band h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 3vw, 34px);
  margin: 0 0 14px;
}
.demo-band p { color: var(--ink-dim); margin: 0 0 26px; }

/* ---------- Pricing ---------- */
.pricing-section { padding: 84px 0; }
.price-panel {
  border: 1px solid var(--line);
  padding: 40px;
  max-width: 480px;
  position: relative;
}
.price-panel::before {
  content: "";
  position: absolute;
  top: -1px; left: -1px;
  width: 18px; height: 18px;
  border-top: 2px solid var(--safety-orange);
  border-left: 2px solid var(--safety-orange);
}
.price-eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-faint);
  margin-bottom: 10px;
}
.price-value {
  font-family: var(--font-display);
  font-size: 56px;
  font-weight: 700;
  line-height: 1;
}
.price-value span { font-family: var(--font-body); font-size: 16px; font-weight: 400; color: var(--ink-dim); }
.price-list { list-style: none; padding: 0; margin: 26px 0; }
.price-list li {
  padding: 9px 0;
  border-top: 1px solid var(--line-dim);
  font-size: 14.5px;
  color: var(--ink-dim);
  display: flex;
  gap: 10px;
}
.price-list li:last-child { border-bottom: 1px solid var(--line-dim); }
.price-list .yes { color: var(--fiber-green); font-family: var(--font-mono); }

/* ---------- Footer ---------- */
footer { padding: 40px 0; border-top: 1px solid var(--line-dim); }
.footer-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--ink-faint);
}

/* ---------- Shared interior-page components ---------- */
.page-hero {
  padding: 68px 0 20px;
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}
.page-hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 4.6vw, 46px);
  line-height: 1.05;
  margin: 0 0 16px;
}
.page-hero p { color: var(--ink-dim); font-size: 16.5px; margin: 0 auto; max-width: 46ch; }

.divider { border: none; border-top: 1px solid var(--line-dim); margin: 0; }

/* Feature detail blocks — alternating text + a blueprint-style panel */
.feat-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 52px;
  align-items: center;
  padding: 64px 0;
}
.feat-block.reverse { direction: rtl; }
.feat-block.reverse > * { direction: ltr; }
@media (max-width: 820px) {
  .feat-block, .feat-block.reverse { grid-template-columns: 1fr; direction: ltr; gap: 26px; }
}
.feat-block h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 27px;
  margin: 0 0 14px;
}
.feat-block p { color: var(--ink-dim); font-size: 15px; line-height: 1.65; margin: 0 0 18px; }
.feat-list { list-style: none; padding: 0; margin: 0; }
.feat-list li {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 7px 0; font-size: 14.5px; color: var(--ink-dim);
  border-top: 1px solid var(--line-dim);
}
.feat-list li:first-child { border-top: none; }
.feat-list .check { color: var(--fiber-green); font-family: var(--font-mono); flex-shrink: 0; }

.feat-panel {
  border: 1px solid var(--line);
  background: var(--bg-raised);
  padding: 26px;
  min-height: 220px;
  display: flex; align-items: center; justify-content: center;
}

/* Splice diagram (features page) */
.splice-strand { display: flex; align-items: center; gap: 3px; margin: 8px 0; }
.splice-dot {
  width: 22px; height: 22px; border-radius: 50%;
  border: 2px solid var(--line-dim);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: 9px; color: var(--ink-faint);
}
.splice-dot.done { border-color: var(--fiber-green); color: var(--fiber-green); }
.splice-line { width: 26px; height: 2px; background: var(--line); }
.splice-line.done { background: var(--fiber-green); }

/* Trace hop list */
.hop {
  display: flex; align-items: center; gap: 12px; padding: 9px 0;
  border-bottom: 1px dashed var(--line-dim);
  font-family: var(--font-mono); font-size: 12px;
}
.hop:last-child { border-bottom: none; }
.hop-id { color: var(--line-bright); min-width: 90px; }
.hop-dist { color: var(--ink-faint); margin-left: auto; }

/* Fiber/coax split table */
.split-view { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; width: 100%; }
.split-col { border: 1px solid var(--line-dim); padding: 12px; }
.split-col h5 {
  font-family: var(--font-mono); font-size: 10.5px; color: var(--ink-faint);
  margin: 0 0 8px; font-weight: 400;
}
.split-row { display: flex; justify-content: space-between; font-size: 12.5px; padding: 4px 0; color: var(--ink-dim); }

/* Tour page */
.tour-shot { max-width: 860px; margin: 60px auto; padding: 0 28px; }
.tour-shot h2 { font-family: var(--font-display); font-weight: 700; font-size: 23px; margin: 0 0 10px; }
.tour-shot p { color: var(--ink-dim); font-size: 14.5px; max-width: 62ch; margin: 0 0 20px; }
.shot-frame { border: 1px solid var(--line); overflow: hidden; }
.shot-frame img { display: block; width: 100%; height: auto; }
.shot-placeholder {
  aspect-ratio: 16 / 9.2;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-raised);
  border: 1px dashed var(--line);
  color: var(--ink-faint);
  font-family: var(--font-mono); font-size: 12px;
  text-align: center; padding: 20px;
}

/* CTA band, reused across interior pages */
.cta-band { text-align: center; padding: 72px 0; border-top: 1px solid var(--line-dim); }
.cta-band h2 { font-family: var(--font-display); font-weight: 700; font-size: 27px; margin: 0 0 22px; }

/* About page */
.about-body { max-width: 660px; margin: 0 auto; padding: 44px 28px 88px; }
.about-body h2 { font-family: var(--font-display); font-weight: 700; font-size: 22px; margin: 42px 0 14px; }
.about-body h2:first-child { margin-top: 0; }
.about-body p { color: var(--ink-dim); font-size: 15.5px; line-height: 1.75; margin: 0 0 16px; }

.promise-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 18px; }
@media (max-width: 640px) { .promise-grid { grid-template-columns: 1fr; } }
.promise-card { border: 1px solid var(--line-dim); padding: 20px; }
.promise-card h3 { font-family: var(--font-body); font-size: 14.5px; font-weight: 600; margin: 0 0 7px; }
.promise-card p { font-size: 13.5px; margin: 0; color: var(--ink-dim); }

/* Contact page */
.contact-grid {
  max-width: 720px; margin: 52px auto 90px; padding: 0 28px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 18px;
}
@media (max-width: 620px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-card {
  border: 1px solid var(--line-dim); padding: 26px;
  display: flex; flex-direction: column; gap: 12px;
}
.contact-card h3 { font-family: var(--font-body); font-size: 16.5px; font-weight: 600; margin: 0; }
.contact-card p { color: var(--ink-dim); font-size: 14px; line-height: 1.6; margin: 0; }
.contact-card a.btn { align-self: flex-start; margin-top: 6px; }

/* Pricing add-on line (Locates) */
.price-addon {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px dashed var(--line-dim);
  display: flex; justify-content: space-between; align-items: center; gap: 14px;
  font-size: 13.5px; color: var(--ink-dim);
}
.price-addon b { color: var(--ink); font-weight: 600; }
.price-addon a { color: var(--line-bright); }
@media (max-width: 520px) { .price-addon { flex-direction: column; align-items: flex-start; } }