/* ============================================================
   AxleMath — trucker calculator hub
   Theme: CAT-scale weigh ticket. DOT signage green, paper grain,
   dot-matrix receipts, dark ink footer.
   ============================================================ */

:root {
  --dot-green: #0b5c38;
  --dot-green-dark: #084428;
  --dot-green-light: #e8f3ec;
  --ink: #17201b;
  --ink-soft: #3d4a42;
  --paper: #f6f4ee;
  --paper-card: #fffdf8;
  --ticket-paper: #fbfaf4;
  --rule: #dcd8cc;
  --stamp-green: #1a7a44;
  --stamp-red: #b3372c;
  --stamp-amber: #a86b12;
  --accent-yellow: #f2b705;
  --mono: "SF Mono", SFMono-Regular, ui-monospace, "Cascadia Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --shadow-card: 0 1px 2px rgba(23, 32, 27, .06), 0 8px 24px rgba(23, 32, 27, .09);
  --shadow-card-hover: 0 2px 4px rgba(23, 32, 27, .08), 0 14px 34px rgba(23, 32, 27, .14);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background-color: var(--paper);
  /* subtle paper grain */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .035 0'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Header: DOT signage strip ---------- */
.site-header {
  background: var(--dot-green);
  border-bottom: 4px solid var(--accent-yellow);
  color: #fff;
}
.site-header .wrap {
  max-width: 1060px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: #fff;
}
.brand-sign {
  background: #fff;
  color: var(--dot-green);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: .5px;
  padding: 3px 9px;
  border-radius: 6px;
  border: 2px solid var(--dot-green-dark);
}
.brand-name {
  font-weight: 800;
  font-size: 20px;
  letter-spacing: .5px;
}
.brand-name span { color: var(--accent-yellow); }
.site-nav { display: flex; gap: 4px; flex-wrap: wrap; }
.site-nav a {
  color: #e9f4ee;
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 600;
  padding: 6px 10px;
  border-radius: 6px;
}
.site-nav a:hover, .site-nav a[aria-current="page"] {
  background: rgba(255, 255, 255, .14);
  color: #fff;
}

/* ---------- Layout ---------- */
.page {
  max-width: 1060px;
  margin: 0 auto;
  padding: 28px 20px 72px;
}
.page-narrow { max-width: 780px; }

.breadcrumbs {
  font-size: 13px;
  color: var(--ink-soft);
  margin-bottom: 18px;
}
.breadcrumbs a { color: var(--dot-green); text-decoration: none; font-weight: 600; }
.breadcrumbs a:hover { text-decoration: underline; }

h1 {
  font-size: clamp(28px, 4.5vw, 40px);
  line-height: 1.15;
  letter-spacing: -.5px;
  margin: 0 0 10px;
  font-weight: 800;
}
.lede {
  font-size: 17px;
  color: var(--ink-soft);
  max-width: 640px;
  margin: 0 0 28px;
}

h2 { font-size: 24px; margin: 44px 0 12px; letter-spacing: -.3px; }
h3 { font-size: 18px; margin: 26px 0 8px; }
p, li { color: var(--ink-soft); font-size: 15.5px; }
strong { color: var(--ink); }
a { color: var(--dot-green); }

/* ---------- Calculator card ---------- */
.calc-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 26px;
  align-items: start;
  margin-bottom: 12px;
}
@media (max-width: 860px) { .calc-shell { grid-template-columns: 1fr; } }

.calc-card {
  background: var(--paper-card);
  border: 1px solid var(--rule);
  border-radius: 14px;
  box-shadow: var(--shadow-card);
  padding: 24px;
}
.calc-card h2 { margin: 0 0 4px; font-size: 19px; }
.calc-card .hint { font-size: 13px; color: var(--ink-soft); margin: 0 0 18px; }

.field { margin-bottom: 14px; }
.field label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 5px;
  color: var(--ink);
  letter-spacing: .2px;
}
.field .sub { font-weight: 400; color: var(--ink-soft); }
.field input[type="number"], .field select {
  width: 100%;
  font-size: 17px;
  font-family: var(--mono);
  padding: 12px 12px;
  border: 1.5px solid #c9c4b6;
  border-radius: 9px;
  background: #fff;
  color: var(--ink);
  min-height: 48px; /* glove-sized touch targets */
}
.field input:focus, .field select:focus {
  outline: 3px solid rgba(11, 92, 56, .25);
  border-color: var(--dot-green);
}
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 480px) { .field-row { grid-template-columns: 1fr; } }

.btn-weigh {
  width: 100%;
  margin-top: 6px;
  background: var(--dot-green);
  color: #fff;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: .6px;
  padding: 15px 18px;
  min-height: 54px;
  border: 0;
  border-bottom: 4px solid var(--dot-green-dark);
  border-radius: 10px;
  cursor: pointer;
  text-transform: uppercase;
}
.btn-weigh:hover { background: #0d6a41; }
.btn-weigh:active { transform: translateY(1px); border-bottom-width: 3px; }

/* ---------- The weigh ticket ---------- */
.ticket-wrap { position: relative; }
.ticket {
  background: var(--ticket-paper);
  border: 1px solid #d8d3c3;
  border-radius: 4px;
  box-shadow: 0 1px 0 #fff inset, 0 10px 26px rgba(23, 32, 27, .12);
  font-family: var(--mono);
  font-size: 14px;
  padding: 18px 20px 22px;
  position: relative;
  overflow: hidden;
  /* perforated edges */
  -webkit-mask-image: radial-gradient(circle at 8px 50%, transparent 0 4px, black 4.5px),
    linear-gradient(black, black);
  mask-composite: intersect;
}
.ticket::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 6px;
  background: repeating-linear-gradient(90deg, var(--dot-green) 0 14px, var(--accent-yellow) 14px 28px);
  opacity: .85;
}
.ticket-head {
  text-align: center;
  border-bottom: 1.5px dashed #b9b39f;
  padding: 8px 0 10px;
  margin-bottom: 10px;
}
.ticket-head .t-brand { font-weight: 700; letter-spacing: 2px; font-size: 15px; }
.ticket-head .t-sub { font-size: 11px; color: #6b7268; letter-spacing: 1px; }
.ticket-line {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 3.5px 0;
  white-space: pre-wrap;
}
.ticket-line .t-label { color: #4a5049; }
.ticket-line .t-val { font-weight: 700; text-align: right; }
.ticket-line.t-rule { border-top: 1.5px dashed #b9b39f; margin-top: 6px; padding-top: 8px; }
.ticket-line.t-total .t-label, .ticket-line.t-total .t-val { font-size: 16px; font-weight: 700; }
.ticket-line .t-flag-over { color: var(--stamp-red); font-weight: 700; }
.ticket-line .t-flag-ok { color: var(--stamp-green); font-weight: 700; }
.ticket-note { font-size: 12px; color: #6b7268; padding-top: 8px; }

/* print animation: each line feeds out like a dot-matrix receipt */
@keyframes ticketLine {
  0% { opacity: 0; transform: translateY(-6px); clip-path: inset(0 100% 0 0); }
  55% { opacity: 1; transform: translateY(0); }
  100% { clip-path: inset(0 0 0 0); opacity: 1; transform: translateY(0); }
}
.ticket.printing .ticket-line,
.ticket.printing .ticket-head,
.ticket.printing .ticket-note,
.ticket.printing .stamp {
  opacity: 0;
  animation: ticketLine .34s steps(6) forwards;
  animation-delay: calc(var(--i, 0) * 110ms);
}
@keyframes stampIn {
  0% { opacity: 0; transform: rotate(-14deg) scale(2.1); }
  60% { opacity: 1; transform: rotate(-8deg) scale(.94); }
  100% { opacity: 1; transform: rotate(-8deg) scale(1); }
}
.stamp {
  display: inline-block;
  margin: 12px auto 0;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: 3px;
  padding: 6px 18px;
  border: 3px solid currentColor;
  border-radius: 8px;
  transform: rotate(-8deg);
  text-transform: uppercase;
}
.ticket .stamp-row { text-align: center; }
.ticket.printing .stamp { animation: stampIn .5s cubic-bezier(.2, 1.4, .4, 1) forwards; animation-delay: calc(var(--i, 0) * 110ms); }
.stamp.ok { color: var(--stamp-green); }
.stamp.bad { color: var(--stamp-red); }
.stamp.warn { color: var(--stamp-amber); }

.ticket-empty {
  border: 1.5px dashed #c9c4b6;
  border-radius: 10px;
  color: #8a9088;
  font-size: 14px;
  text-align: center;
  padding: 44px 20px;
  font-family: var(--mono);
}

@media (prefers-reduced-motion: reduce) {
  .ticket.printing .ticket-line, .ticket.printing .ticket-head,
  .ticket.printing .ticket-note, .ticket.printing .stamp {
    animation: none; opacity: 1;
  }
  html { scroll-behavior: auto; }
}

/* ---------- Tool cards (home) ---------- */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 18px;
  margin: 26px 0 10px;
}
.tool-card {
  background: var(--paper-card);
  border: 1px solid var(--rule);
  border-radius: 14px;
  box-shadow: var(--shadow-card);
  padding: 22px;
  text-decoration: none;
  color: var(--ink);
  display: block;
  transition: box-shadow .18s ease, transform .18s ease;
  position: relative;
}
.tool-card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-2px); }
.tool-card .icon {
  width: 46px; height: 46px;
  border-radius: 10px;
  background: var(--dot-green-light);
  color: var(--dot-green);
  display: grid;
  place-items: center;
  margin-bottom: 12px;
}
.tool-card .icon svg { width: 26px; height: 26px; }
.tool-card h3 { margin: 0 0 6px; font-size: 17px; }
.tool-card p { margin: 0; font-size: 14px; }
.tool-card .go {
  position: absolute;
  top: 22px; right: 20px;
  color: var(--dot-green);
  font-weight: 800;
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity .18s ease, transform .18s ease;
}
.tool-card:hover .go { opacity: 1; transform: translateX(0); }
.tool-card .badge {
  display: inline-block;
  background: var(--accent-yellow);
  color: #533f00;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .8px;
  border-radius: 5px;
  padding: 2px 7px;
  margin-left: 8px;
  vertical-align: 2px;
}

/* ---------- Hero ---------- */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: 34px;
  align-items: center;
  padding: 26px 0 8px;
}
@media (max-width: 860px) { .hero { grid-template-columns: 1fr; } }
.hero h1 { font-size: clamp(32px, 5vw, 46px); }
.hero .lede { margin-bottom: 22px; }
.hero-cta {
  display: inline-block;
  background: var(--dot-green);
  color: #fff;
  font-weight: 800;
  text-decoration: none;
  font-size: 16px;
  padding: 14px 22px;
  border-radius: 10px;
  border-bottom: 4px solid var(--dot-green-dark);
}
.hero-cta:hover { background: #0d6a41; }
.hero-cta-sub { display: block; margin-top: 12px; font-size: 13px; color: var(--ink-soft); }
.hero-scene {
  background: linear-gradient(#eef3ee 0 72%, #d9ded7 72% 100%);
  border: 1px solid var(--rule);
  border-radius: 16px;
  box-shadow: var(--shadow-card);
  overflow: hidden;
}
.hero-scene svg { display: block; width: 100%; height: auto; }

/* ---------- Content blocks / SEO sections ---------- */
.content-block { max-width: 720px; }
.formula {
  background: var(--paper-card);
  border: 1px solid var(--rule);
  border-left: 4px solid var(--dot-green);
  border-radius: 8px;
  font-family: var(--mono);
  font-size: 14.5px;
  padding: 14px 16px;
  overflow-x: auto;
}
.faq details {
  background: var(--paper-card);
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 0 18px;
  margin-bottom: 10px;
}
.faq summary {
  cursor: pointer;
  font-weight: 700;
  font-size: 15.5px;
  color: var(--ink);
  padding: 14px 0;
  list-style: none;
  position: relative;
  padding-right: 28px;
}
.faq summary::after {
  content: "+";
  position: absolute; right: 2px; top: 12px;
  color: var(--dot-green);
  font-size: 20px; font-weight: 800;
}
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 0 0 14px; }

.related {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}
.related a {
  background: var(--dot-green-light);
  color: var(--dot-green-dark);
  border: 1px solid #c4dccd;
  text-decoration: none;
  font-weight: 700;
  font-size: 13.5px;
  padding: 8px 14px;
  border-radius: 999px;
}
.related a:hover { background: #dcecdf; }

/* ---------- Ad slots (placeholders until AdSense approval) ---------- */
.ad-slot {
  margin: 34px auto;
  max-width: 728px;
  min-height: 90px;
  border: 1.5px dashed #cfcaba;
  border-radius: 8px;
  display: grid;
  place-items: center;
  color: #a9a493;
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* ---------- Footer: dark ink ---------- */
.site-footer {
  background: var(--ink);
  color: #b8c2ba;
  margin-top: 40px;
  border-top: 4px solid var(--dot-green);
}
.site-footer .wrap {
  max-width: 1060px;
  margin: 0 auto;
  padding: 36px 20px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 28px;
}
@media (max-width: 720px) { .site-footer .wrap { grid-template-columns: 1fr; } }
.site-footer h4 { color: #fff; font-size: 14px; letter-spacing: 1px; text-transform: uppercase; margin: 0 0 12px; }
.site-footer a { color: #b8c2ba; text-decoration: none; display: block; font-size: 14px; padding: 3px 0; }
.site-footer a:hover { color: #fff; }
.site-footer .foot-brand { font-weight: 800; font-size: 18px; color: #fff; }
.site-footer .foot-brand span { color: var(--accent-yellow); }
.site-footer .fine { font-size: 12.5px; color: #8a948c; margin-top: 10px; max-width: 380px; }
.site-footer .legal {
  border-top: 1px solid #2a352e;
  text-align: center;
  font-size: 12.5px;
  color: #8a948c;
  padding: 14px 20px;
}