/* ============================================
   DRIVESENSE — design tokens
   Palette: steel blue, graphite, white, efficiency teal
   Type: Archivo (display) / Hanken Grotesk (body) / Martian Mono (data)
   ============================================ */

:root{
  --steel: #2C3E50;
  --steel-deep: #1B2733;
  --teal: #2A9D8F;
  --teal-deep: #218074;
  --amber: #E9A23B;
  --cream: #F7F7F5;
  --cream-warm: #EFEDE7;
  --ink: #22262B;
  --ink-soft: #5B6570;
  --line: #E1E4E6;
  --white: #FFFFFF;

  --font-display: "Archivo", sans-serif;
  --font-body: "Hanken Grotesk", sans-serif;
  --font-mono: "Martian Mono", monospace;

  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;

  --shadow-card: 0 14px 32px -16px rgba(27, 39, 51, 0.28);
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{ margin:0; font-family: var(--font-body); color: var(--ink); background: var(--cream); -webkit-font-smoothing: antialiased; }
img,svg{ display:block; max-width:100%; }
a{ color: inherit; text-decoration: none; }
ul,ol{ list-style: none; margin:0; padding:0; }
.wrap{ width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 32px; }

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

.eyebrow{ font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.04em; text-transform: uppercase; color: var(--teal-deep); margin: 0 0 14px; }
.eyebrow.center{ text-align:center; }
.section-title{ font-family: var(--font-display); font-weight: 700; font-size: clamp(1.9rem, 3vw, 2.6rem); line-height: 1.2; margin: 0 0 20px; color: var(--steel); }
.section-title.center{ text-align:center; max-width: 680px; margin-left:auto; margin-right:auto; }

.btn{ display:inline-flex; align-items:center; justify-content:center; gap:8px; padding: 14px 28px; border-radius: 10px; font-weight: 600; font-size: 0.95rem; font-family: var(--font-display); border: 1.5px solid transparent; cursor:pointer; transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease; white-space: nowrap; }
.btn:hover{ transform: translateY(-2px); }
.btn:focus-visible{ outline: 3px solid var(--teal); outline-offset: 2px; }
.btn-primary{ background: var(--steel); color: var(--white); box-shadow: var(--shadow-card); }
.btn-primary:hover{ background: var(--steel-deep); }
.btn-ghost{ background: transparent; color: var(--steel); border-color: var(--steel); }
.btn-ghost:hover{ background: var(--steel); color: var(--white); }
.btn-light{ background: var(--white); color: var(--teal-deep); }
.btn-light:hover{ background: var(--cream-warm); }
.btn-sm{ padding: 10px 18px; font-size: 0.85rem; }

.site-header{ position: sticky; top:0; z-index: 50; background: rgba(247,247,245,0.92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.header-inner{ display:flex; align-items:center; justify-content: space-between; padding: 16px 0; gap: 24px; }
.brand{ display:flex; align-items:center; gap:10px; font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; color: var(--steel); }
.mark-ring{ fill:none; stroke: var(--steel); stroke-width: 2.5; }
.mark-needle{ fill:none; stroke: var(--teal); stroke-width: 2.5; stroke-linecap:round; }
.mark-dot{ fill: var(--teal); }
.main-nav{ display:flex; gap: 26px; font-weight: 600; font-size: 0.9rem; flex: 1; justify-content: center; }
.main-nav a{ color: var(--ink-soft); transition: color .15s; }
.main-nav a:hover{ color: var(--steel); }
.nav-cta{ flex-shrink:0; }
.nav-toggle{ display:none; }

.hero{ padding: 76px 0 56px; overflow:hidden; }
.hero-inner{ display:grid; grid-template-columns: 1.1fr 0.9fr; align-items:center; gap: 48px; }
.hero h1{ font-family: var(--font-display); font-weight: 700; font-size: clamp(2.1rem, 3.8vw, 2.9rem); line-height: 1.2; margin: 0 0 22px; color: var(--steel); }
.hero-sub{ font-size: 1.03rem; line-height: 1.65; color: var(--ink-soft); max-width: 480px; margin: 0 0 32px; }
.hero-actions{ display:flex; gap:16px; flex-wrap:wrap; margin-bottom: 40px; }
.hero-trust{ display:flex; gap: 32px; }
.hero-trust strong{ display:block; font-family: var(--font-display); font-size: 1.4rem; color: var(--teal-deep); }
.hero-trust span{ font-size: 0.74rem; color: var(--ink-soft); font-family: var(--font-mono); }

.hero-art{ position:relative; }
.hero-ring{ fill: var(--cream-warm); }
.device-screen{ fill: var(--steel); stroke: var(--steel-deep); stroke-width: 2; }
.device-display{ fill: var(--steel-deep); }
.device-mpg{ font-family: var(--font-mono); font-weight:700; font-size: 26px; text-anchor:middle; fill: var(--teal); }
.device-unit{ font-family: var(--font-mono); font-size: 9px; letter-spacing:0.1em; text-anchor:middle; fill: rgba(255,255,255,0.6); }
.device-graph{ fill:none; stroke: var(--teal); stroke-width:2.5; stroke-linecap:round; stroke-linejoin:round; }
.device-plug{ fill: var(--steel); stroke: var(--steel-deep); stroke-width:2; }

.how{ padding: 88px 0; background: var(--white); }
.how-grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 48px; }
.how-card{ background: var(--cream); border-radius: var(--radius-lg); padding: 32px 28px; border: 1px solid var(--line); }
.how-num{ display:block; font-family: var(--font-display); font-size: 2.2rem; font-weight:800; color: var(--teal); margin-bottom: 10px; }
.how-card h3{ font-family: var(--font-display); font-size: 1.2rem; margin: 0 0 10px; color: var(--steel); }
.how-card p{ color: var(--ink-soft); line-height: 1.6; margin:0; }
.how-footnote{ max-width: 780px; margin: 32px auto 0; text-align:center; color: var(--ink-soft); font-size: 0.92rem; line-height:1.6; }

.tips{ padding: 88px 0; }
.tips-grid{ display:grid; grid-template-columns: repeat(3,1fr); gap: 24px; margin-top: 48px; }
.tip-card{ background: var(--white); border-radius: var(--radius-md); padding: 26px 24px; border: 1px solid var(--line); }
.tip-card h3{ font-family: var(--font-display); font-size: 1.05rem; margin: 0 0 8px; color: var(--steel); }
.tip-card p{ margin:0; color: var(--ink-soft); line-height:1.55; font-size:0.92rem; }

.honest{ padding: 88px 0; background: var(--steel); color: var(--cream); }
.honest .eyebrow{ color: var(--amber); }
.honest .section-title{ color: var(--white); }
.honest-table{ max-width: 900px; margin: 48px auto 0; border-radius: var(--radius-md); overflow:hidden; background: var(--white); color: var(--ink); }
.honest-row{ display:grid; grid-template-columns: 1fr 1.3fr 1.3fr; }
.honest-row:not(:last-child){ border-bottom: 1px solid var(--line); }
.honest-row span{ padding: 16px 18px; font-size: 0.86rem; }
.honest-row span:first-child{ color: var(--steel); font-weight:600; }
.honest-head{ background: var(--steel-deep); color: var(--white); font-family: var(--font-display); font-weight:700; }
.honest-head span{ padding: 14px 18px; }
.honest-row .yes{ color: var(--teal-deep); }
.honest-row .no{ color: var(--ink-soft); }
.honest-footnote{ max-width: 780px; margin: 28px auto 0; text-align:center; color: rgba(247,247,245,0.85); font-size: 0.92rem; line-height:1.6; }

.shop{ padding: 88px 0; background: var(--white); }
.package-grid{ display:grid; grid-template-columns: repeat(2,1fr); gap: 28px; margin-top: 48px; max-width: 780px; margin-left:auto; margin-right:auto; }
.package-card{ background: var(--cream); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 32px 28px; position:relative; }
.package-card-feature{ border: 2px solid var(--teal); box-shadow: var(--shadow-card); }
.ribbon{ position:absolute; top:18px; right:-32px; background: var(--teal); color: var(--white); font-family: var(--font-mono); font-size: 0.64rem; letter-spacing: 0.04em; padding: 5px 36px; transform: rotate(35deg); font-weight:700; }
.package-card h3{ font-family: var(--font-display); font-size: 1.4rem; margin: 0 0 8px; color: var(--steel); }
.package-sub{ color: var(--ink-soft); font-size:0.9rem; margin: 0 0 18px; }
.package-price{ margin-bottom: 20px; }
.price{ font-family: var(--font-display); font-size: 1.8rem; font-weight:700; color: var(--teal-deep); }
.package-facts{ margin: 0 0 24px; }
.package-facts li{ font-size:0.85rem; color: var(--ink-soft); padding: 6px 0; padding-left:20px; position:relative; }
.package-facts li::before{ content:"✓"; position:absolute; left:0; color: var(--teal); font-weight:700; }

.faq{ padding: 88px 0; }
.faq-inner{ max-width: 780px; }
.faq-list{ display:flex; flex-direction:column; gap: 14px; margin-top: 32px; }
details{ background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 18px 22px; }
summary{ cursor:pointer; font-weight:600; font-family: var(--font-display); color: var(--steel); list-style:none; display:flex; justify-content: space-between; align-items:center; gap:16px; }
summary::-webkit-details-marker{ display:none; }
summary::after{ content:"+"; font-size:1.4rem; color: var(--teal); flex-shrink:0; }
details[open] summary::after{ content:"–"; }
details p{ margin: 14px 0 0; color: var(--ink-soft); line-height:1.6; }

.cta-band{ background: var(--teal); padding: 64px 0; }
.cta-band-inner{ display:flex; align-items:center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.cta-band h2{ font-family: var(--font-display); font-weight:700; font-size: clamp(1.4rem,2.6vw,2rem); color: var(--white); margin:0; max-width: 540px; }

.site-footer{ background: var(--steel-deep); color: rgba(247,247,245,0.8); padding: 64px 0 0; }
.footer-grid{ display:grid; grid-template-columns: 1fr 2fr; gap: 40px; padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,0.12); }
.footer-brand{ display:flex; gap:12px; align-items:flex-start; }
.footer-brand .mark-ring{ stroke: var(--teal); }
.footer-brand p{ font-size: 0.9rem; line-height:1.5; margin:0; }
.footer-links{ display:grid; grid-template-columns: repeat(2,1fr); gap: 24px; }
.footer-links h4{ font-family: var(--font-mono); font-size:0.72rem; text-transform:uppercase; letter-spacing:0.06em; color: var(--teal); margin: 0 0 14px; }
.footer-links a{ display:block; padding: 6px 0; color: rgba(247,247,245,0.8); font-size:0.9rem; }
.footer-links a:hover{ color: var(--white); }
.footer-legal{ padding: 24px 0 32px; font-size: 0.74rem; color: rgba(247,247,245,0.5); line-height:1.65; display:flex; flex-direction:column; gap:8px; }

.main-nav.nav-open{ display:flex; flex-direction:column; position:absolute; top:100%; left:0; right:0; background: var(--cream); border-bottom: 1px solid var(--line); padding: 8px 32px 20px; gap: 4px; }
.main-nav.nav-open a{ padding: 10px 0; border-bottom: 1px solid var(--line); }
.nav-toggle.is-active span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-active span:nth-child(2){ opacity:0; }
.nav-toggle.is-active span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }
.nav-toggle span{ transition: transform .2s ease, opacity .2s ease; }
.reveal-ready{ opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal-in{ opacity: 1; transform: translateY(0); }

@media (max-width: 900px){
  .main-nav{ display:none; }
  .hero-inner{ grid-template-columns: 1fr; }
  .hero-art{ order:-1; max-width: 300px; margin: 0 auto; }
  .how-grid, .tips-grid{ grid-template-columns: 1fr; }
  .honest-row{ grid-template-columns: 1fr; }
  .honest-row span:first-child{ font-weight:700; padding-bottom:4px; }
  .package-grid{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr; }
  .footer-links{ grid-template-columns: repeat(2,1fr); }
  .nav-cta{ display:none; }
  .nav-toggle{ display:flex; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:6px; }
  .nav-toggle span{ width:22px; height:2px; background: var(--steel); }
}
@media (max-width: 520px){
  .wrap{ padding: 0 20px; }
  .hero{ padding-top: 40px; }
  .hero-trust{ gap: 20px; flex-wrap: wrap; }
  .cta-band-inner{ justify-content:center; text-align:center; }
}