/* ============================================================
   Driveway Turntables — Design tokens
   Palette:  Asphalt #16171A · Concrete #ECE8E0 · Steel #9AA0A6
             Ember Amber #E8A33D (signal / CTA) · Rail Green #1F4739
   Type:     Big Shoulders Display (headlines) · Public Sans (body)
             JetBrains Mono (specs / data / degree markers)
   ============================================================ */

:root {
  --asphalt: #16171A;
  --asphalt-soft: #232427;
  --concrete: #ECE8E0;
  --concrete-hi: #F7F5F0;
  --steel: #9AA0A6;
  --steel-line: #D8D3C8;
  --amber: #E8A33D;
  --amber-hi: #F5B85B;
  --rail-green: #1F4739;
  --ink: #16171A;
  --ink-soft: #4B4E52;
  --white: #FFFFFF;

  --font-display: "Big Shoulders Display", sans-serif;
  --font-body: "Public Sans", sans-serif;
  --font-mono: "JetBrains Mono", monospace;

  --radius: 2px;
  --wrap: 1180px;
  --shadow-lift: 0 18px 40px -18px rgba(22,23,26,0.35);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--concrete-hi);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
}

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

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

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

.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--amber); color: var(--asphalt);
  padding: 10px 16px; z-index: 999; font-weight: 700;
}
.skip-link:focus { left: 12px; top: 12px; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  line-height: 0.98;
  margin: 0 0 0.4em;
  color: var(--asphalt);
}
h1 em, h2 em, h3 em, .brand em { font-style: normal; color: var(--amber); }

/* Headings sitting on a dark background need light text — the base rule
   above always wins over inherited color, so it must be overridden here
   explicitly rather than relying on inheritance from the section. */
.hero h1, .page-hero h1,
.section--dark h1, .section--dark h2, .section--dark h3, .section--dark h4,
.cta-band h1, .cta-band h2, .cta-band h3 {
  color: var(--concrete-hi);
}
.hero h1 em, .page-hero h1 em,
.section--dark h1 em, .section--dark h2 em, .section--dark h3 em, .section--dark h4 em,
.cta-band h1 em, .cta-band h2 em, .cta-band h3 em {
  color: var(--amber-hi);
}

h1 { font-size: clamp(2.6rem, 6vw, 5rem); }
h2 { font-size: clamp(2rem, 4vw, 3.1rem); }
h3 { font-size: clamp(1.35rem, 2.4vw, 1.7rem); }

p { margin: 0 0 1em; color: var(--ink-soft); }
.lede { font-size: 1.15rem; color: var(--ink-soft); max-width: 54ch; }

.eyebrow {
  font-family: var(--font-mono);
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--rail-green);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 22px; height: 1px;
  background: var(--amber);
  display: inline-block;
}
.eyebrow--light { color: var(--amber-hi); }
.eyebrow--light::before { background: var(--amber-hi); }
.eyebrow--onlight { color: var(--concrete); }
.eyebrow--onlight::before { background: var(--amber); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 14px 26px;
  border-radius: var(--radius);
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, background .2s ease, color .2s ease, border-color .2s ease;
}
.btn--sm { padding: 10px 18px; font-size: 0.85rem; }
.btn--lg { padding: 16px 32px; font-size: 1rem; }
.btn--primary { background: var(--amber); color: var(--asphalt); }
.btn--primary:hover { background: var(--amber-hi); transform: translateY(-2px); }
.btn--dark { background: var(--asphalt); color: var(--concrete-hi); }
.btn--dark:hover { background: var(--asphalt-soft); transform: translateY(-2px); }
.btn--ghost { background: transparent; border-color: rgba(255,255,255,0.4); color: var(--concrete-hi); }
.btn--ghost:hover { border-color: var(--amber); color: var(--amber-hi); transform: translateY(-2px); }
.btn--outline { background: transparent; border-color: var(--asphalt); color: var(--asphalt); }
.btn--outline:hover { background: var(--asphalt); color: var(--concrete-hi); }
.btn:focus-visible { outline: 3px solid var(--amber); outline-offset: 2px; }

/* ---------- topbar / header ---------- */
.topbar { background: var(--asphalt); color: var(--steel); font-size: 0.82rem; }
.topbar__inner { display: flex; justify-content: space-between; align-items: center; padding: 8px 24px; }
.topbar__phone { display: inline-flex; align-items: center; gap: 6px; color: var(--amber-hi); font-weight: 600; }
.topbar__msg { font-family: var(--font-mono); letter-spacing: 0.02em; }

.site-header {
  background: var(--concrete-hi);
  border-bottom: 1px solid var(--steel-line);
  position: sticky; top: 0; z-index: 50;
}
.site-header__inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 24px; gap: 20px; }

.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand__text { font-family: var(--font-display); font-weight: 700; font-size: 1.25rem; text-transform: uppercase; letter-spacing: 0.01em; }
.brand__text--footer { color: var(--concrete-hi); font-size: 1.4rem; display: block; margin-bottom: 12px; }

.nav { display: flex; gap: 28px; }
.nav a { font-weight: 600; font-size: 0.92rem; color: var(--ink-soft); position: relative; padding: 6px 0; }
.nav a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 2px;
  background: var(--amber); transition: right .2s ease;
}
.nav a:hover, .nav a.is-active { color: var(--asphalt); }
.nav a:hover::after, .nav a.is-active::after { right: 0; }

.site-header__actions { display: flex; align-items: center; gap: 14px; }
.nav-toggle {
  display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px;
}
.nav-toggle span { width: 22px; height: 2px; background: var(--asphalt); display: block; }

@media (max-width: 880px) {
  .nav {
    position: fixed; inset: 0 0 0 auto; width: min(78vw, 320px);
    background: var(--asphalt); flex-direction: column; padding: 100px 32px 32px;
    gap: 26px; transform: translateX(100%); transition: transform .25s ease; z-index: 60;
  }
  .nav a { color: var(--concrete); font-size: 1.1rem; }
  .nav a:hover, .nav a.is-active { color: var(--amber-hi); }
  .nav.is-open { transform: translateX(0); }
  .nav-toggle { display: flex; }
  .site-header__actions .btn--sm { display: none; }
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  background: var(--asphalt);
  color: var(--concrete-hi);
  overflow: hidden;
  padding: 84px 0 110px;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(255,255,255,0.035) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(0deg, rgba(255,255,255,0.035) 0 1px, transparent 1px 64px);
  pointer-events: none;
}
.hero__inner { position: relative; display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 40px; align-items: center; }
.hero__copy p.lede { color: var(--steel); }
.hero__actions { display: flex; gap: 16px; margin-top: 30px; flex-wrap: wrap; }

.hero__stats { display: flex; gap: 32px; margin-top: 54px; flex-wrap: wrap; }
.hero__stat b { font-family: var(--font-mono); display: block; font-size: 1.6rem; color: var(--amber-hi); }
.hero__stat span { font-size: 0.8rem; color: var(--steel); text-transform: uppercase; letter-spacing: 0.06em; }

.hero__dial { position: relative; width: 100%; max-width: 480px; margin: 0 auto; }
.dial-spin { animation: spin 30s linear infinite; transform-origin: 50% 50%; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .dial-spin { animation: none; } }

@media (max-width: 880px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__dial { order: -1; max-width: 320px; }
}

/* ---------- sections ---------- */
.section { padding: 96px 0; }
.section--tight { padding: 72px 0; }
.section--concrete { background: var(--concrete); }
.section--dark { background: var(--asphalt); color: var(--concrete-hi); }
.section--dark p { color: var(--steel); }
.section--dark h2, .section--dark h3 { color: var(--concrete-hi); }
.section-head { max-width: 640px; margin-bottom: 56px; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }

/* ---------- feature grid ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--steel-line); border: 1px solid var(--steel-line); }
.feature-card { background: var(--concrete-hi); padding: 32px 26px; }
.feature-card__num { font-family: var(--font-mono); color: var(--amber); font-size: 0.85rem; margin-bottom: 18px; display: block; }
.feature-card h3 { font-size: 1.15rem; margin-bottom: 10px; }
.feature-card p { font-size: 0.93rem; margin: 0; }
@media (max-width: 980px) { .feature-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .feature-grid { grid-template-columns: 1fr; } }

/* ---------- process / degree steps ---------- */
.process { position: relative; }
.process-track {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; position: relative;
}
.process-track::before {
  content: ""; position: absolute; top: 22px; left: 6%; right: 6%; height: 1px;
  background: repeating-linear-gradient(90deg, var(--steel) 0 8px, transparent 8px 16px);
  z-index: 0;
}
.process-step { position: relative; z-index: 1; }
.process-step__deg {
  font-family: var(--font-mono); font-weight: 500; font-size: 1.4rem; color: var(--amber);
  display: inline-flex; align-items: center; justify-content: center;
  width: 46px; height: 46px; border-radius: 50%; background: var(--asphalt);
  margin-bottom: 20px; font-size: 0.85rem;
}
.process-step h3 { font-size: 1.05rem; margin-bottom: 8px; }
.process-step p { font-size: 0.92rem; }
@media (max-width: 880px) {
  .process-track { grid-template-columns: 1fr 1fr; }
  .process-track::before { display: none; }
}
@media (max-width: 560px) { .process-track { grid-template-columns: 1fr; } }

/* ---------- spec cards ---------- */
.spec-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.spec-card {
  background: var(--concrete-hi); border: 1px solid var(--steel-line); padding: 40px;
  position: relative;
}
.spec-card--featured { border-color: var(--amber); box-shadow: var(--shadow-lift); }
.spec-card__tag {
  position: absolute; top: -13px; left: 40px; background: var(--amber); color: var(--asphalt);
  font-family: var(--font-mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em;
  padding: 4px 10px;
}
.spec-card__size { font-family: var(--font-mono); font-size: 3rem; color: var(--asphalt); line-height: 1; margin-bottom: 6px; }
.spec-card__size span { font-size: 1.1rem; color: var(--steel); }
.spec-list { list-style: none; margin: 24px 0 0; padding: 0; border-top: 1px solid var(--steel-line); }
.spec-list li {
  display: flex; justify-content: space-between; gap: 16px; padding: 12px 0;
  border-bottom: 1px solid var(--steel-line); font-size: 0.92rem;
}
.spec-list li b { font-weight: 600; color: var(--asphalt); text-align: right; }
.spec-list li span:first-child { color: var(--ink-soft); }
@media (max-width: 880px) { .spec-grid { grid-template-columns: 1fr; } }

/* ---------- comparison (install options) ---------- */
.compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--steel-line); border: 1px solid var(--steel-line); }
.compare-card { background: var(--concrete-hi); padding: 34px; }
.compare-card h3 { display: flex; align-items: center; gap: 10px; }
.compare-card ul { padding-left: 20px; margin: 16px 0 0; color: var(--ink-soft); font-size: 0.92rem; }
.compare-card li { margin-bottom: 8px; }
@media (max-width: 700px) { .compare-grid { grid-template-columns: 1fr; } }

/* ---------- use cases ---------- */
.usecase-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.usecase-card {
  background: var(--asphalt-soft); color: var(--concrete-hi); padding: 30px 24px;
  border-top: 3px solid var(--amber);
}
.usecase-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
.usecase-card p { font-size: 0.88rem; color: var(--steel); margin: 0; }
@media (max-width: 980px) { .usecase-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .usecase-grid { grid-template-columns: 1fr; } }

/* ---------- testimonial ---------- */
.testimonial { max-width: 760px; margin: 0 auto; text-align: center; }
.testimonial blockquote {
  font-family: var(--font-display); text-transform: none; font-weight: 700;
  font-size: clamp(1.4rem, 3vw, 2.1rem); line-height: 1.25; margin: 0 0 24px; color: var(--asphalt);
}
.testimonial cite { font-style: normal; font-family: var(--font-mono); font-size: 0.85rem; color: var(--rail-green); }

/* ---------- cta band ---------- */
.cta-band { background: var(--rail-green); color: var(--concrete-hi); padding: 70px 0; }
.cta-band__inner { display: flex; justify-content: space-between; align-items: center; gap: 40px; flex-wrap: wrap; }
.cta-band h2 { color: var(--concrete-hi); margin-bottom: 10px; }
.cta-band p { color: rgba(236,232,224,0.8); max-width: 44ch; margin: 0; }
.cta-band__actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- footer ---------- */
.site-footer { background: var(--asphalt); color: var(--steel); padding: 64px 0 0; }
.site-footer__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 48px; }
.site-footer h3 { color: var(--concrete-hi); font-size: 0.95rem; margin-bottom: 16px; }
.site-footer__col { display: flex; flex-direction: column; gap: 10px; font-size: 0.92rem; }
.site-footer__col a:hover { color: var(--amber-hi); }
.site-footer__brand p { font-size: 0.9rem; max-width: 32ch; }
.site-footer__social { display: flex; gap: 14px; margin-top: 18px; }
.site-footer__social a { width: 34px; height: 34px; border: 1px solid rgba(255,255,255,0.2); border-radius: 50%; display: flex; align-items: center; justify-content: center; }
.site-footer__social a:hover { border-color: var(--amber); color: var(--amber-hi); }
.site-footer__address { font-size: 0.9rem; }
.site-footer__legal { border-top: 1px solid rgba(255,255,255,0.12); padding: 22px 24px; font-size: 0.8rem; }
@media (max-width: 880px) { .site-footer__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .site-footer__grid { grid-template-columns: 1fr; } }

/* ---------- forms ---------- */
.form-card {
  background: var(--concrete-hi); border: 1px solid var(--steel-line); padding: 44px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 20px; }
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group--full { grid-column: 1 / -1; }
label { font-size: 0.85rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; color: var(--asphalt); }
input, select, textarea {
  font-family: var(--font-body); font-size: 0.98rem; padding: 12px 14px;
  border: 1.5px solid var(--steel-line); border-radius: var(--radius); background: var(--white); color: var(--ink);
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--amber); box-shadow: 0 0 0 3px rgba(232,163,61,0.25); }
textarea { resize: vertical; min-height: 120px; }
@media (max-width: 640px) { .form-row { grid-template-columns: 1fr; } }

.alert { padding: 16px 20px; border-radius: var(--radius); margin-bottom: 24px; font-size: 0.94rem; }
.alert--success { background: #E4F1EA; color: var(--rail-green); border: 1px solid #B9DAC7; }
.alert--error { background: #FBEAE5; color: #A23B2B; border: 1px solid #F0C2B4; }

.field-error { color: #A23B2B; font-size: 0.8rem; }

/* ---------- info split (used on inner pages) ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
@media (max-width: 880px) { .split { grid-template-columns: 1fr; } }

.check-list { list-style: none; margin: 0; padding: 0; }
.check-list li { display: flex; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--steel-line); font-size: 0.95rem; color: var(--ink-soft); }
.check-list li::before { content: "→"; color: var(--amber); font-weight: 700; flex-shrink: 0; }

.page-hero {
  background: var(--asphalt); color: var(--concrete-hi); padding: 64px 0 56px;
  position: relative; overflow: hidden;
}
.page-hero p { color: var(--steel); max-width: 60ch; }

.breadcrumb { font-family: var(--font-mono); font-size: 0.78rem; color: var(--steel); margin-bottom: 18px; }
.breadcrumb a { color: var(--steel); }
.breadcrumb a:hover { color: var(--amber-hi); }