/* ==========================================================================
   First Choice Jet Wash — Jet Washing London — Global Stylesheet
   Mobile-first. Vanilla CSS, no framework.
   ========================================================================== */

:root {
  /* Colours — per build brief Section 3 */
  --color-bg: #FFFFFF;
  --color-bg-alt: #F8F9FA;
  --color-blue: #2B7DE9;
  --color-blue-dark: #1A2B4A;
  --color-cta: #FF6B35;
  --color-text: #2D3748;
  --color-border: #E2E8F0;
  --color-success: #16A34A;
  --color-highlight: #EBF5FF;

  /* Typography */
  --font-base: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --line-height-body: 1.6;
  --line-height-heading: 1.2;

  /* Spacing */
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 48px;
  --space-6: 64px;

  /* Layout */
  --max-width: 1200px;
  --radius: 8px;
  --header-height: 64px;
}
@media (min-width: 1024px) {
  :root {
    --header-height: 88px;
  }
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
img { max-width: 100%; display: block; }
a { color: var(--color-blue); text-decoration: none; }
a:hover { text-decoration: underline; }
ul { list-style: none; margin: 0; padding: 0; }
button { font-family: inherit; cursor: pointer; }

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-base);
  font-display: swap;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: var(--line-height-body);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  padding-top: var(--header-height);
}

/* ---- Skip link (accessibility) ---- */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-blue-dark);
  color: #fff;
  padding: var(--space-1) var(--space-2);
  z-index: 1000;
}
.skip-link:focus {
  left: 0;
}

/* ---- Headings ---- */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: var(--line-height-heading);
  color: var(--color-blue-dark);
  margin: 0 0 var(--space-2) 0;
}
h1 { font-size: 28px; font-weight: 700; }
h2 { font-size: 22px; font-weight: 600; }
h3 { font-size: 18px; font-weight: 600; }
p { margin: 0 0 var(--space-2) 0; }

@media (min-width: 768px) {
  h1 { font-size: 42px; }
  h2 { font-size: 32px; }
  h3 { font-size: 24px; }
  body { font-size: 18px; }
}

/* ---- Layout helpers ---- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-2);
}
.section {
  padding: var(--space-5) 0;
}
.section-alt {
  background: var(--color-bg-alt);
}
.text-center { text-align: center; }
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 16px;
  border: none;
  text-decoration: none;
  transition: background-color 0.15s ease, transform 0.1s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary {
  background: var(--color-cta);
  color: #fff;
}
.btn-primary:hover { background: #e85a26; }
.btn-secondary {
  background: var(--color-blue-dark);
  color: #fff;
}
.btn-secondary:hover { background: #142139; }
.btn-outline {
  background: transparent;
  color: var(--color-blue-dark);
  border: 2px solid var(--color-blue-dark);
}

/* ---- Header / Navigation ---- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-height);
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  z-index: 500;
  transition: box-shadow 0.2s ease;
}
.site-header.is-scrolled {
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.site-header .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}
.logo {
  font-weight: 700;
  font-size: 18px;
  color: var(--color-blue-dark);
  white-space: nowrap;
  display: inline-block;
}
.logo-img {
  height: 44px;
  width: auto;
  display: block;
}
@media (min-width: 1024px) {
  .logo-img {
    height: 72px;
  }
}
.logo-footer {
  display: inline-block;
  background: #fff;
  padding: 6px 10px;
  border-radius: var(--radius);
}
.logo-footer .logo-img {
  height: 32px;
}
.main-nav {
  display: none;
}
.main-nav ul {
  display: flex;
  gap: var(--space-3);
}
.main-nav a {
  color: var(--color-blue-dark);
  font-weight: 500;
  font-size: 16px;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.header-phone {
  display: none;
  font-weight: 600;
  color: var(--color-blue-dark);
  white-space: nowrap;
}
.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-blue-dark);
  position: relative;
}
.nav-toggle span::before { content: ''; top: -6px; position: absolute; width: 20px; height: 2px; background: var(--color-blue-dark); }
.nav-toggle span::after { content: ''; top: 6px; position: absolute; width: 20px; height: 2px; background: var(--color-blue-dark); }

.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0; right: 0;
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  z-index: 499;
}
.mobile-nav.is-open { display: block; }
.mobile-nav ul { padding: var(--space-2); }
.mobile-nav li { border-bottom: 1px solid var(--color-border); }
.mobile-nav a { display: block; padding: 14px 8px; color: var(--color-blue-dark); font-weight: 500; }

@media (min-width: 1024px) {
  .main-nav { display: block; }
  .header-phone { display: inline; }
  .nav-toggle { display: none; }
}

/* ---- Mobile sticky CTA bar ---- */
.mobile-cta-bar {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 400;
  background: rgba(26, 43, 74, 0.96);
}
.mobile-cta-bar.is-visible { display: flex; }
.mobile-cta-bar a {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 56px;
  color: #fff;
  font-weight: 600;
}
.mobile-cta-bar a.cta-call { background: var(--color-success); }
.mobile-cta-bar a.cta-quote { background: var(--color-cta); }

@media (min-width: 1024px) {
  .mobile-cta-bar { display: none !important; }
}

/* ---- Hero ---- */
.hero {
  position: relative;
  color: #fff;
  padding: var(--space-6) 0;
  min-height: 420px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}
.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(26,43,74,0.78), rgba(26,43,74,0.6));
}
.hero .container { position: relative; z-index: 2; }
@media (min-width: 768px) {
  .hero { min-height: 560px; }
}
.hero h1, .hero p { color: #fff; }
.hero-ctas {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-3);
}
@media (min-width: 600px) {
  .hero-ctas { flex-direction: row; }
}
.trust-strip {
  margin-top: var(--space-4);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  font-size: 14px;
  font-weight: 500;
}

/* ---- Direct answer block (AI-extractable) ---- */
.answer-block {
  background: var(--color-highlight);
  border-left: 4px solid var(--color-blue);
  border-radius: var(--radius);
  padding: var(--space-3);
  margin: var(--space-3) 0;
}

/* ---- Cards / grids ---- */
.grid {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: 1fr;
}
@media (min-width: 600px) {
  .grid-2 { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 900px) {
  .grid-3 { grid-template-columns: 1fr 1fr 1fr; }
}
.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-3);
}
.card .icon {
  width: 40px;
  height: 40px;
  margin-bottom: var(--space-2);
  color: var(--color-blue);
}

/* ---- Tables ---- */
.price-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-3) 0;
  font-size: 15px;
}
.price-table th, .price-table td {
  text-align: left;
  padding: 12px;
  border-bottom: 1px solid var(--color-border);
}
.price-table th {
  background: var(--color-bg-alt);
  color: var(--color-blue-dark);
}

/* ---- FAQ accordion ---- */
.faq-item {
  border-bottom: 1px solid var(--color-border);
}
.faq-question {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  padding: var(--space-2) 0;
  font-weight: 600;
  font-size: 16px;
  color: var(--color-blue-dark);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
}
.faq-answer {
  display: none;
  padding-bottom: var(--space-2);
  color: var(--color-text);
}
.faq-item.is-open .faq-answer { display: block; }
.faq-item.is-open .faq-icon { transform: rotate(45deg); }
.faq-icon { transition: transform 0.15s ease; font-size: 20px; }

/* ---- Reviews ---- */
.review-card {
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  padding: var(--space-3);
}
.stars { color: #F5A623; letter-spacing: 2px; }

/* ---- CTA block ---- */
.cta-block {
  background: var(--color-blue-dark);
  color: #fff;
  text-align: center;
  padding: var(--space-5) 0;
}
.cta-block h2 { color: #fff; }
.cta-block .btn-row {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  justify-content: center;
  margin-top: var(--space-3);
}
@media (min-width: 600px) {
  .cta-block .btn-row { flex-direction: row; }
}

/* ---- Forms ---- */
.quote-form {
  display: grid;
  gap: var(--space-2);
}
.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 4px;
  font-size: 14px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 16px;
}
.form-group textarea { min-height: 100px; }

/* ---- Footer ---- */
.site-footer {
  background: var(--color-blue-dark);
  color: #cbd5e1;
  padding: var(--space-5) 0 var(--space-6) 0;
}
.site-footer a { color: #cbd5e1; }
.site-footer h4 { color: #fff; font-size: 16px; }
.footer-grid {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: 1fr;
  margin-bottom: var(--space-4);
}
@media (min-width: 768px) {
  .footer-grid { grid-template-columns: 1.2fr 1fr 1fr 1fr; }
}
.footer-grid li { margin-bottom: 6px; }
.footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: var(--space-3);
  font-size: 14px;
}
.footer-bottom {
  margin-top: var(--space-3);
  font-size: 13px;
  color: #94a3b8;
}

/* ---- Breadcrumbs ---- */
.breadcrumbs {
  font-size: 14px;
  padding: var(--space-2) 0 0 0;
  color: #64748b;
}
.breadcrumbs a { color: #64748b; }
.breadcrumbs li { display: inline; }
.breadcrumbs li:not(:last-child)::after { content: ' / '; padding: 0 4px; }

/* ---- Utility ---- */
@media (max-width: 1023px) {
  body { padding-bottom: 56px; } /* room for mobile cta bar */
}