/* Haveringey London Directory of Businesses - Main Stylesheet
   Subdomain: haveringey.londondirectoryofbusinesses.co.uk
   Optimised for Core Web Vitals & accessibility */

:root {
  --colour-bg: #fafafa;
  --colour-surface: #ffffff;
  --colour-text: #1a1a1a;
  --colour-text-muted: #4a4a4a;
  --colour-accent: #0d47a1;
  --colour-accent-hover: #1565c0;
  --colour-border: #e5e5e5;
  --colour-breadcrumb: #6b7280;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-serif: Georgia, "Times New Roman", serif;
  --space-unit: 0.25rem;
  --container-max: 1140px;
  --radius: 4px;
  --shadow: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-lg: 0 4px 12px rgba(0,0,0,0.08);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--colour-text);
  background-color: var(--colour-bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--colour-accent);
  text-decoration: none;
}

a:hover {
  color: var(--colour-accent-hover);
  text-decoration: underline;
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  top: -3rem;
  left: 0;
  padding: 0.75rem 1rem;
  background: var(--colour-accent);
  color: #fff;
  z-index: 100;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 0;
}

/* Header */
.site-header {
  background: var(--colour-surface);
  border-bottom: 1px solid var(--colour-border);
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow);
}

.header-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--colour-text);
  font-weight: 600;
  font-size: 1.125rem;
}

.logo-link:hover {
  text-decoration: none;
  color: var(--colour-accent);
}

.logo-img {
  width: 180px;
  height: auto;
}

/* Navigation */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--colour-border);
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  font-size: 1rem;
  border-radius: var(--radius);
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .main-nav {
    display: none;
    width: 100%;
  }

  .main-nav.is-open {
    display: block;
    margin-top: 0.5rem;
  }

  .nav-list {
    flex-direction: column;
  }

  .nav-list li {
    border-bottom: 1px solid var(--colour-border);
  }

  .nav-list a {
    display: block;
    padding: 0.75rem;
  }
}

.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.main-nav a {
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius);
  color: var(--colour-text-muted);
  text-decoration: none;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--colour-accent);
  background: rgba(13, 71, 161, 0.06);
  text-decoration: none;
}

/* Banner */
.page-banner {
  position: relative;
  width: 100%;
  height: 0;
  padding-bottom: 56.25%;
  overflow: hidden;
  background: linear-gradient(135deg, #1e3a5f 0%, #0d47a1 100%);
}

.page-banner img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.banner-placeholder {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.9);
  font-size: 1.25rem;
  font-weight: 500;
}

/* Breadcrumb */
.breadcrumb-wrap {
  background: var(--colour-surface);
  border-bottom: 1px solid var(--colour-border);
  padding: 0.75rem 0;
}

.breadcrumb {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
  font-size: 0.875rem;
  color: var(--colour-breadcrumb);
}

.breadcrumb a {
  color: var(--colour-breadcrumb);
}

.breadcrumb a:hover {
  color: var(--colour-accent);
}

.breadcrumb span[aria-hidden="true"] {
  margin: 0 0.35rem;
  color: var(--colour-border);
}

/* Main content */
.main-content {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.page-title {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 600;
  margin: 0 0 1rem;
  line-height: 1.3;
  color: var(--colour-text);
}

.lead {
  font-size: 1.125rem;
  color: var(--colour-text-muted);
  margin: 0 0 1.5rem;
  max-width: 72ch;
}

.content-body {
  max-width: 72ch;
}

.content-body h2 {
  font-size: 1.375rem;
  margin: 2rem 0 0.75rem;
  color: var(--colour-text);
}

.content-body h3 {
  font-size: 1.125rem;
  margin: 1.5rem 0 0.5rem;
}

.content-body p {
  margin: 0 0 1rem;
}

.content-body ul {
  margin: 0 0 1rem;
  padding-left: 1.5rem;
}

.content-body li {
  margin-bottom: 0.35rem;
}

/* Category grid on homepage */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin: 2.5rem 0;
}

.category-card {
  background: var(--colour-surface);
  border: 1px solid var(--colour-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  transition: box-shadow 0.2s, border-color 0.2s;
}

.category-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--colour-accent);
}

.category-card a {
  text-decoration: none;
  color: inherit;
}

.category-card a:hover {
  text-decoration: none;
}

.category-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.125rem;
}

.category-card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--colour-text-muted);
}

/* Footer */
.site-footer {
  background: var(--colour-text);
  color: #e5e5e5;
  padding: 2rem 1.5rem;
  margin-top: 3rem;
}

.footer-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.site-footer a {
  color: #b0bec5;
}

.site-footer a:hover {
  color: #fff;
}

.footer-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Contact page form */
.contact-form label {
  display: block;
  margin-bottom: 0.25rem;
  font-weight: 500;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  max-width: 480px;
  padding: 0.6rem 0.75rem;
  margin-bottom: 1rem;
  border: 1px solid var(--colour-border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 1rem;
}

.contact-form textarea {
  min-height: 120px;
  resize: vertical;
}

.contact-form button {
  padding: 0.75rem 1.5rem;
  background: var(--colour-accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  cursor: pointer;
}

.contact-form button:hover {
  background: var(--colour-accent-hover);
}

/* FAQ */
.faq-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
}

.faq-list li {
  margin-bottom: 1rem;
  padding: 1rem;
  background: var(--colour-surface);
  border: 1px solid var(--colour-border);
  border-radius: var(--radius);
}

.faq-list strong {
  display: block;
  margin-bottom: 0.35rem;
}

/* Utility */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}