/* ==========================================================================
   Wireless High-Pressure Car Washer — Landing Page Styles
   Plain CSS, mobile-first, no frameworks, no build step.
   ========================================================================== */

:root {
  --ink: #0e1210;
  --ink-soft: #33403a;
  --paper: #ffffff;
  --paper-soft: #f4f6f3;
  --line: #e2e6de;
  --brand: #17d34c;       /* deep, punchy green — energy + power */
  --brand-dark: #0f9c38;
  --accent: #c8ff3d;      /* lime accent lifted from the product's own color */
  --accent-ink: #10230f;
  --dark: #0c1310;
  --dark-soft: #16211b;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(12, 19, 16, 0.12);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

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

img { max-width: 100%; height: auto; display: block; border-radius: var(--radius); }

h1, h2, h3 { line-height: 1.15; margin: 0 0 0.6em; font-weight: 800; letter-spacing: -0.01em; }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.5rem, 3.4vw, 2.3rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; color: var(--ink-soft); }

a { color: inherit; }

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 10px 16px;
  z-index: 200;
}
.skip-link:focus { left: 10px; top: 10px; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  text-decoration: none;
  border-radius: 999px;
  padding: 14px 26px;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  border: none;
  cursor: pointer;
}
.btn-cta {
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 8px 22px rgba(200, 255, 61, 0.35);
}
.btn-cta:hover, .btn-cta:focus-visible { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(200, 255, 61, 0.45); }
.btn-large { padding: 18px 40px; font-size: 1.1rem; min-width: 220px; }
.btn-small { padding: 10px 20px; font-size: 0.85rem; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(12, 19, 16, 0.96);
  backdrop-filter: saturate(1.2) blur(6px);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 20px;
}
.logo {
  color: var(--paper);
  font-weight: 900;
  text-decoration: none;
  font-size: 1.05rem;
  margin-right: auto;
  white-space: nowrap;
}
.logo span { color: var(--accent); }

.site-nav {
  display: none;
  gap: 22px;
}
.site-nav a {
  color: #d7ded9;
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
}
.site-nav a:hover { color: var(--accent); }

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  width: 34px;
  height: 34px;
  cursor: pointer;
  margin-left: 4px;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--paper);
  border-radius: 2px;
}

@media (min-width: 860px) {
  .site-nav { display: flex; margin-right: 24px; }
  .nav-toggle { display: none; }
}

.site-nav.open {
  display: flex;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  flex-direction: column;
  background: var(--dark-soft);
  padding: 16px 20px 20px;
  gap: 14px;
}

/* Hero */
.hero {
  background: radial-gradient(120% 140% at 15% -10%, #1c2b21 0%, var(--dark) 55%);
  color: var(--paper);
  padding: 56px 0 64px;
}
.hero-grid {
  display: grid;
  gap: 36px;
}
.eyebrow {
  color: var(--accent);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}
.hero h1 { color: var(--paper); }
.hero-sub { color: #c6cec8; font-size: 1.05rem; max-width: 46ch; }
.hero-actions { margin: 22px 0 18px; display: flex; flex-direction: column; align-items: flex-start; gap: 10px; }
.hero-actions.center { align-items: center; text-align: center; }
.hero-note { color: #9aa79f; font-size: 0.85rem; margin: 0; }
.hero-badges {
  list-style: none;
  padding: 0;
  margin: 18px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.hero-badges li {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.14);
  color: #e6ebe6;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
}
.hero-media img { box-shadow: var(--shadow); }

@media (min-width: 860px) {
  .hero-grid { grid-template-columns: 1.1fr 0.9fr; align-items: center; }
}

/* Sections */
.section { padding: 64px 0; }
.section-alt { background: var(--paper-soft); }
.section h2 { text-align: left; max-width: 40ch; }
.section-lede { max-width: 60ch; font-size: 1.05rem; }

.feature-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: 1fr;
  margin-top: 30px;
}
@media (min-width: 640px) { .feature-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 980px) { .feature-grid { grid-template-columns: repeat(3, 1fr); } }

.feature-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
}
.feature-card h3 { color: var(--brand-dark); }
.feature-card p { margin-bottom: 0; }

/* Split layout */
.split {
  display: grid;
  gap: 32px;
  align-items: center;
}
@media (min-width: 860px) {
  .split { grid-template-columns: 1fr 1fr; }
  .split.reverse .split-media { order: 2; }
}
.split-media img { box-shadow: var(--shadow); }

/* Use cases */
.use-grid {
  display: grid;
  gap: 22px;
  margin-top: 30px;
  grid-template-columns: 1fr;
}
@media (min-width: 780px) { .use-grid { grid-template-columns: repeat(3, 1fr); } }
.use-card { background: var(--paper); }
.use-card h3 { margin-top: 16px; }
.use-note {
  margin-top: 34px;
  padding: 26px;
  background: var(--paper);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
}
.use-note h3 { color: var(--brand-dark); }
.use-note p { margin-bottom: 0; }

/* Gift section */
.gift-section {
  background: linear-gradient(160deg, var(--dark) 0%, #12261a 100%);
  color: var(--paper);
  text-align: center;
}
.gift-section h2 { color: var(--paper); margin-left: auto; margin-right: auto; }
.gift-section p.section-lede { color: #c6cec8; margin-left: auto; margin-right: auto; }
.gift-inner { display: flex; flex-direction: column; align-items: center; }

/* Box list */
.box-list {
  padding-left: 1.2em;
  color: var(--ink-soft);
  font-size: 1rem;
}
.box-list li { margin-bottom: 8px; }

/* Spec table */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--paper);
  border-radius: var(--radius);
  overflow: hidden;
}
.spec-table th, .spec-table td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
}
.spec-table th { color: var(--ink); font-weight: 700; width: 40%; background: var(--paper-soft); }
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: none; }

/* Gallery */
.gallery-single { max-width: 560px; margin: 30px auto 0; }
.gallery-single img { box-shadow: var(--shadow); }

/* FAQ */
.faq-list { margin-top: 26px; display: flex; flex-direction: column; gap: 12px; }
.faq-list details {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 6px 20px;
}
.faq-list summary {
  cursor: pointer;
  font-weight: 700;
  padding: 14px 0;
  list-style: none;
  position: relative;
  padding-right: 26px;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 12px;
  font-size: 1.3rem;
  color: var(--brand-dark);
}
.faq-list details[open] summary::after { content: "\2212"; }
.faq-list details p { padding-bottom: 14px; margin: 0; }

/* Final CTA */
.final-cta {
  text-align: center;
  background: var(--paper-soft);
}
.final-cta h2 { margin-left: auto; margin-right: auto; }
.final-cta p { max-width: 44ch; margin-left: auto; margin-right: auto; }

/* Footer */
.site-footer {
  background: var(--dark);
  color: #c6cec8;
  padding: 44px 0 0;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 30px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-logo { margin: 0 0 6px; }
.footer-tagline { margin: 0; font-size: 0.88rem; color: #97a29b; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 16px; }
.footer-nav a { text-decoration: none; color: #c6cec8; font-size: 0.88rem; font-weight: 600; }
.footer-nav a:hover { color: var(--accent); }
.footer-bottom {
  padding: 18px 20px 26px;
  font-size: 0.78rem;
  color: #7b877f;
  text-align: center;
}