/* ==========================================================================
   Design tokens
   Theme: dealership window-sticker / highway-signage — honest, official,
   spec-sheet confident. Built for a car-buying help site.
   ========================================================================== */

:root {
  --paper: #FAF8F4;
  --paper-dim: #F1EEE6;
  --ink: #1B1F1A;
  --ink-soft: #4A4E48;
  --road-green: #1B5E3F;
  --road-green-dark: #123F2A;
  --caution: #E8A33D;
  --caution-dark: #B87A1E;
  --brick: #B8452F;
  --line: #D8D3C8;
  --steel: #6B7280;
  --white: #FFFFFF;

  --font-display: 'Oswald', 'Arial Narrow', sans-serif;
  --font-body: 'Source Sans 3', 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

  --radius: 3px;
  --container: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

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

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.55;
  font-size: 17px;
}

img { max-width: 100%; display: block; }

a { color: var(--road-green-dark); }
a:hover { color: var(--road-green); }

:focus-visible {
  outline: 3px solid var(--caution);
  outline-offset: 2px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--ink);
  margin: 0 0 0.5em;
  line-height: 1.15;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
h3 { font-size: 1.25rem; letter-spacing: 0.01em; }

p { margin: 0 0 1.1em; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  color: var(--road-green-dark);
  font-weight: 600;
}

/* ---------------------------------- Header ---------------------------------- */

.site-header {
  border-bottom: 3px solid var(--ink);
  background: var(--paper);
  position: sticky;
  top: 0;
  z-index: 40;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.3rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--ink);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo .plate {
  background: var(--road-green);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 3px 7px;
  border-radius: 2px;
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  text-decoration: none;
  color: var(--ink);
  font-weight: 600;
  font-size: 0.95rem;
  border-bottom: 2px solid transparent;
  padding-bottom: 4px;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  border-bottom-color: var(--caution);
  color: var(--ink);
}

.nav-toggle {
  display: none;
  background: none;
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  padding: 6px 10px;
  font-family: var(--font-mono);
  cursor: pointer;
}

@media (max-width: 760px) {
  .nav-links {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--paper);
    border-bottom: 3px solid var(--ink);
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 16px;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links li { border-top: 1px solid var(--line); }
  .nav-links a { display: block; padding: 12px 0; }
  .nav-toggle { display: block; }
}

/* ---------------------------------- Hero ---------------------------------- */

.hero {
  padding: 64px 0 56px;
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
}

.hero h1 { margin-bottom: 0.4em; }

.hero .lede {
  font-size: 1.15rem;
  color: var(--ink-soft);
  max-width: 46ch;
}

.hero-ctas {
  display: flex;
  gap: 14px;
  margin-top: 28px;
  flex-wrap: wrap;
}

/* ---------------------------------- Buttons ---------------------------------- */

.btn {
  display: inline-block;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.95rem;
  text-decoration: none;
  padding: 13px 26px;
  border-radius: var(--radius);
  border: 2px solid var(--ink);
  cursor: pointer;
  transition: transform 0.12s ease;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--road-green);
  border-color: var(--road-green-dark);
  color: var(--white);
}
.btn-primary:hover { background: var(--road-green-dark); color: var(--white); }

.btn-ghost {
  background: transparent;
  color: var(--ink);
}

/* ---------------------------------- Window sticker (signature component) ---------------------------------- */

.sticker {
  background: var(--white);
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  position: relative;
  padding: 22px 24px;
  box-shadow: 5px 5px 0 var(--road-green);
}

.sticker::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px dashed var(--line);
  pointer-events: none;
}

.sticker-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 2px solid var(--ink);
  padding-bottom: 10px;
  margin-bottom: 14px;
}

.sticker-head .label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--steel);
}

.sticker-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  padding: 7px 0;
  border-bottom: 1px dotted var(--line);
}
.sticker-row:last-child { border-bottom: none; }

.sticker-row .k { color: var(--ink-soft); }
.sticker-row .v { font-weight: 600; }

.sticker-total {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 2px solid var(--ink);
}

.sticker-total .k {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 0.95rem;
}

.sticker-total .v {
  font-family: var(--font-mono);
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--road-green-dark);
}

/* ---------------------------------- Sections ---------------------------------- */

section { padding: 64px 0; }
section.tight { padding: 40px 0; }
section.dim { background: var(--paper-dim); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 860px) { .card-grid { grid-template-columns: 1fr; } }

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-top: 4px solid var(--road-green);
  border-radius: var(--radius);
  padding: 24px;
}

.card .num {
  font-family: var(--font-mono);
  color: var(--caution-dark);
  font-size: 0.85rem;
  font-weight: 700;
}

.card h3 { margin-top: 8px; }

.card a.read-more {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-decoration: none;
  font-weight: 600;
}

/* ---------------------------------- Ad slots ---------------------------------- */

.ad-slot {
  border: 1px dashed var(--steel);
  border-radius: var(--radius);
  background: var(--paper-dim);
  color: var(--steel);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-align: center;
  padding: 18px;
  margin: 40px 0;
}

/* ---------------------------------- Callouts ---------------------------------- */

.callout {
  border-left: 4px solid var(--caution);
  background: var(--paper-dim);
  padding: 16px 20px;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 24px 0;
}
.callout.warn { border-left-color: var(--brick); }
.callout .eyebrow { display: block; margin-bottom: 6px; }

/* ---------------------------------- Article ---------------------------------- */

.article {
  max-width: 72ch;
}
.article h2 { margin-top: 1.6em; }
.article ul, .article ol { padding-left: 1.3em; }
.article li { margin-bottom: 0.5em; }

.byline {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--steel);
  margin-bottom: 2em;
}

/* ---------------------------------- Tools / calculators ---------------------------------- */

.tool-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
@media (max-width: 860px) { .tool-grid { grid-template-columns: 1fr; } }

.field {
  margin-bottom: 18px;
}
.field label {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
  color: var(--ink-soft);
}
.field label .val { color: var(--road-green-dark); font-weight: 700; }

.field input[type="range"] {
  width: 100%;
  accent-color: var(--road-green);
}

.field input[type="number"],
.field select {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 1rem;
  padding: 10px 12px;
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  background: var(--white);
}

/* ---------------------------------- Footer ---------------------------------- */

.site-footer {
  border-top: 3px solid var(--ink);
  padding: 40px 0;
  margin-top: 40px;
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-links {
  display: flex;
  gap: 20px;
  list-style: none;
  padding: 0;
  margin: 0;
  flex-wrap: wrap;
}
.footer-links a { color: var(--ink-soft); text-decoration: none; font-size: 0.9rem; }
.footer-links a:hover { color: var(--road-green-dark); }

.fine-print {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--steel);
  margin-top: 20px;
}