/* ==========================================================================
   SDWH Limited — Website Stylesheet
   Design system: GOV.UK Design System + GSS colour palette
   Font: Inter (Google Fonts, SIL Open Font Licence)
   Version: 1.0 — May 2026
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS CUSTOM PROPERTIES (DESIGN TOKENS)
   -------------------------------------------------------------------------- */

:root {
  /* Typography */
  --font-main: 'Inter', sans-serif;

  /* Text colours */
  --color-text:           #0b0c0c;
  --color-text-secondary: #505a5f;

  /* Backgrounds */
  --color-bg:             #ffffff;
  --color-bg-secondary:   #f3f2f1;

  /* Borders */
  --color-border:         #b1b4b6;

  /* Accent */
  --color-accent:         #1d70b8;
  --color-accent-hover:   #003078;

  /* Semantic */
  --color-green:          #00703c;
  --color-red:            #d4351c;
  --color-orange:         #f47738;
  --color-yellow:         #ffdd00;

  /* GSS data vis (reference only — applied in chart exports) */
  --gss-dark-blue:        #12436D;
  --gss-teal:             #28A197;
  --gss-dark-pink:        #801650;
  --gss-orange:           #F46A25;
  --gss-dark-grey:        #3D3D3D;
  --gss-purple:           #A285D1;

  /* Spacing (8px grid) */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  40px;

  /* Layout */
  --max-width:       960px;
  --nav-height:      56px;
}

/* --------------------------------------------------------------------------
   2. RESET AND BASE
   -------------------------------------------------------------------------- */

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-main);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-bg);
}

/* --------------------------------------------------------------------------
   3. TYPOGRAPHY
   -------------------------------------------------------------------------- */

h1 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
  margin-top: 0;
  margin-bottom: var(--space-lg);
}

h2 {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
  margin-top: 0;
  margin-bottom: var(--space-md);
}

h3 {
  font-size: 19px;
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-text);
  margin-top: 0;
  margin-bottom: var(--space-sm);
}

p {
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--color-text);
  margin-top: 0;
  margin-bottom: var(--space-md);
  max-width: 75ch;
}

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

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

a:focus-visible {
  outline: 3px solid var(--color-yellow);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   4. LAYOUT
   -------------------------------------------------------------------------- */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.page-main {
  padding-top: var(--space-xl);
  padding-bottom: var(--space-xl);
}

/* --------------------------------------------------------------------------
   5. SKIP LINK (ACCESSIBILITY)
   -------------------------------------------------------------------------- */

.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  background: var(--color-text);
  color: var(--color-bg);
  padding: var(--space-sm) var(--space-md);
  text-decoration: none;
  z-index: 1000;
  font-weight: 600;
}

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

/* --------------------------------------------------------------------------
   6. SITE HEADER AND NAVIGATION
   -------------------------------------------------------------------------- */

.site-header {
  background-color: var(--color-text);
  border-bottom: 4px solid var(--color-accent);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .container {
  display: flex;
  align-items: center;
  height: var(--nav-height);
  gap: var(--space-md);
  position: relative;
}

.site-logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-bg);
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
}

.site-logo:hover {
  color: var(--color-bg);
  text-decoration: underline;
}

.site-logo:focus-visible {
  outline: 3px solid var(--color-yellow);
  outline-offset: 2px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
  margin: 0;
  padding: 0;
  list-style: none;
  flex: 1;
}

.site-nav a {
  display: block;
  padding: var(--space-sm) var(--space-md);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-bg);
  text-decoration: none;
  height: var(--nav-height);
  line-height: calc(var(--nav-height) - 16px);
  border-bottom: 4px solid transparent;
}

.site-nav a:hover {
  color: var(--color-bg);
  text-decoration: none;
  border-bottom-color: var(--color-bg-secondary);
}

.site-nav a:focus-visible {
  outline: 3px solid var(--color-yellow);
  outline-offset: -3px;
}

.site-nav a[aria-current="page"],
.site-nav a.active {
  border-bottom-color: var(--color-accent);
  color: var(--color-bg);
}

/* Nav toggle — always visible */
.nav-toggle {
  display: block;
  background: none;
  border: 1px solid rgba(255,255,255,0.4);
  color: var(--color-bg);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  padding: 6px 12px;
  border-radius: 3px;
}

/* Nav always hidden until toggled open */
.site-nav {
  display: none;
  position: absolute;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: var(--color-text);
  flex-direction: column;
  padding: var(--space-sm) var(--space-md);
  z-index: 99;
  border-top: 1px solid rgba(255,255,255,0.15);
}

.site-nav.open {
  display: flex;
}

.site-nav a {
  height: auto;
  line-height: 1.5;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,0.12);
  font-size: 15px;
}

/* --------------------------------------------------------------------------
   7. SITE FOOTER
   -------------------------------------------------------------------------- */

.site-footer {
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: var(--space-xl) 0;
  margin-top: var(--space-xl);
}

.site-footer p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
  max-width: none;
}

.site-footer a {
  color: var(--color-accent);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.footer-legal a {
  font-size: 14px;
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   8. HERO SECTION (HOME PAGE)
   -------------------------------------------------------------------------- */

.hero {
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-xl) 0;
}

.hero h1 {
  font-size: 36px;
  margin-bottom: var(--space-md);
}

.hero p.lead {
  font-size: 18px;
  line-height: 1.5;
  max-width: 65ch;
  margin-bottom: var(--space-xl);
}

/* --------------------------------------------------------------------------
   9. STAT BANNER (THREE HEADLINE NUMBERS)
   -------------------------------------------------------------------------- */

.stat-banner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin: var(--space-xl) 0;
}

.stat-item {
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  padding: var(--space-md);
  border-radius: 4px;
}

.stat-value {
  display: block;
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.stat-label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  line-height: 1.4;
}

.stat-source {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-top: var(--space-md);
  margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   10. NAVIGATION CARDS (HOME PAGE)
   -------------------------------------------------------------------------- */

.nav-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.nav-card {
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: var(--space-md);
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
}

.nav-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  border-bottom: 3px solid var(--gss-dark-blue);
  padding-bottom: var(--space-sm);
}

.nav-card p {
  font-size: 15px;
  flex: 1;
  color: var(--color-text-secondary);
  max-width: none;
  margin-bottom: var(--space-md);
}

.nav-card .card-link {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

.nav-card .card-link:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

.nav-card .card-link::after {
  content: "\2192"; /* → */
}

/* --------------------------------------------------------------------------
   11. PAGE INTRO (SECTION PAGES)
   -------------------------------------------------------------------------- */

.page-intro {
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-xl) 0;
}

.page-intro h1 {
  margin-bottom: var(--space-md);
}

.page-intro p {
  max-width: 70ch;
}

.regulatory-notice {
  font-size: 14px;
  color: var(--color-text-secondary);
  border-left: 4px solid var(--color-border);
  padding-left: var(--space-md);
  margin-top: var(--space-lg);
  margin-bottom: 0;
  max-width: none;
}

.source-note {
  font-size: 14px;
  color: var(--color-text-secondary);
  font-style: italic;
  margin-bottom: 0;
  max-width: none;
}

/* --------------------------------------------------------------------------
   12. REPORT ENTRIES
   -------------------------------------------------------------------------- */

.report-list {
  margin-top: var(--space-xl);
}

.report-entry {
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: var(--space-md) var(--space-lg);
  margin-bottom: var(--space-lg);
  background: var(--color-bg);
}

.report-entry h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.report-entry p {
  max-width: none;
  margin-bottom: var(--space-md);
}

.report-link-row {
  margin-bottom: var(--space-md);
}

.report-link-row a {
  font-size: 15px;
  font-weight: 500;
}

/* Tags */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-secondary);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 3px;
  padding: 2px var(--space-sm);
  white-space: nowrap;
}

/* Analysis panel */
.analysis-panel {
  background-color: var(--color-bg-secondary);
  border-radius: 4px;
  padding: var(--space-md);
  margin-top: var(--space-md);
}

.analysis-panel p {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
  max-width: none;
}

.analysis-panel ul {
  margin: 0;
  padding-left: var(--space-lg);
}

.analysis-panel li {
  font-size: 14px;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
  line-height: 1.4;
}

/* --------------------------------------------------------------------------
   13. CHART EMBED PLACEHOLDERS
   -------------------------------------------------------------------------- */

.chart-section {
  margin-bottom: var(--space-xl);
}

.chart-section h3 {
  margin-bottom: var(--space-md);
}

.chart-embed {
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: var(--color-bg-secondary);
  min-height: 400px;
  width: 100%;
  display: block;
}

.chart-placeholder {
  border: 1px dashed var(--color-border);
  border-radius: 4px;
  background: var(--color-bg-secondary);
  padding: var(--space-xl);
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 14px;
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* --------------------------------------------------------------------------
   14. ABOUT PAGE
   -------------------------------------------------------------------------- */

.about-section {
  margin-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-xl);
}

.about-section:last-of-type {
  border-bottom: none;
}

.about-section h2 {
  margin-bottom: var(--space-md);
}

.distinguisher-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.distinguisher-list li {
  padding: var(--space-md);
  border-left: 4px solid var(--gss-dark-blue);
  margin-bottom: var(--space-md);
  background: var(--color-bg-secondary);
}

.distinguisher-list li strong {
  display: block;
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.distinguisher-list li span {
  font-size: 15px;
  color: var(--color-text);
}

.focus-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.focus-tag {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  border-radius: 3px;
  padding: var(--space-xs) var(--space-md);
}

/* --------------------------------------------------------------------------
   15. LEGAL PAGES
   -------------------------------------------------------------------------- */

.legal-content h2 {
  font-size: 20px;
  margin-top: var(--space-xl);
}

.legal-content p,
.legal-content li {
  max-width: 70ch;
}

/* --------------------------------------------------------------------------
   16. LOGO IN HEADER
   -------------------------------------------------------------------------- */

.site-logo-img {
  height: 40px;
  width: auto;
  display: block;
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   17. NAV CTA BUTTON (GET IN TOUCH)
   -------------------------------------------------------------------------- */

.nav-cta {
  margin-left: auto;
  flex-shrink: 0;
  background: var(--color-accent);
  color: #ffffff;
  border: none;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-main);
  cursor: pointer;
  border-radius: 3px;
  white-space: nowrap;
  text-decoration: none;
  display: inline-block;
}

.nav-cta:hover {
  background: var(--color-accent-hover);
  color: #ffffff;
}

.nav-cta:focus-visible {
  outline: 3px solid var(--color-yellow);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   18. AUDIENCE CARDS (WHO WE WORK WITH)
   -------------------------------------------------------------------------- */

.audience-grid {
  margin-top: var(--space-xl);
}

.audience-card {
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--gss-dark-blue);
  border-radius: 4px;
  padding: var(--space-md) var(--space-lg);
  margin-bottom: var(--space-lg);
  background: var(--color-bg);
}

.audience-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.audience-card p {
  max-width: none;
}

/* --------------------------------------------------------------------------
   19. HOLDING PAGE
   -------------------------------------------------------------------------- */

.holding-page {
  padding: var(--space-xl) 0;
  text-align: center;
}

.holding-page h1 {
  margin-bottom: var(--space-md);
}

.holding-page p {
  font-size: 18px;
  color: var(--color-text-secondary);
  max-width: 50ch;
  margin: 0 auto var(--space-xl);
}

.holding-badge {
  display: inline-block;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 3px;
  padding: var(--space-sm) var(--space-md);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
}

/* --------------------------------------------------------------------------
   20. CONTACT CTA BLOCK
   -------------------------------------------------------------------------- */

.contact-cta {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: var(--space-xl);
  margin-top: var(--space-xl);
}

.contact-cta h2 {
  margin-bottom: var(--space-sm);
}

.contact-cta p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
  max-width: 60ch;
}

.cta-button {
  display: inline-block;
  background: var(--color-accent);
  color: #ffffff;
  border: none;
  padding: 12px 24px;
  font-size: 16px;
  font-weight: 600;
  font-family: var(--font-main);
  cursor: pointer;
  border-radius: 3px;
  text-decoration: none;
}

.cta-button:hover {
  background: var(--color-accent-hover);
  color: #ffffff;
}

.cta-button:focus-visible {
  outline: 3px solid var(--color-yellow);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   21. RESPONSIVE — MEDIUM DESKTOP (nav compression)
   -------------------------------------------------------------------------- */

@media (max-width: 1200px) {
  .site-nav a {
    padding: var(--space-sm) 10px;
    font-size: 13px;
  }

  .site-header .container {
    gap: var(--space-md);
  }
}

/* Switch to hamburger at 1024px so nav never overflows */
@media (max-width: 1024px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--color-text);
    flex-direction: column;
    padding: var(--space-sm) var(--space-md);
    z-index: 99;
  }

  .site-nav.open {
    display: flex;
  }

  .site-nav a {
    height: auto;
    line-height: 1.5;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid rgba(255,255,255,0.15);
    font-size: 15px;
  }

  .site-header .container {
    position: relative;
  }

  .nav-cta {
    margin-left: auto;
  }
}

/* --------------------------------------------------------------------------
   22. RESPONSIVE — TABLET
   -------------------------------------------------------------------------- */

@media (max-width: 768px) {
  h1             { font-size: 26px; }
  .hero h1       { font-size: 28px; }
  .hero p.lead   { font-size: 16px; }

  .stat-banner   { grid-template-columns: 1fr; }
  .nav-cards     { grid-template-columns: 1fr; }

  .site-header .container {
    flex-wrap: wrap;
    height: auto;
    padding-top: var(--space-sm);
    padding-bottom: var(--space-sm);
  }

  .site-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 0;
    padding-bottom: var(--space-sm);
  }

  .site-nav.open {
    display: flex;
  }

  .site-nav a {
    height: auto;
    line-height: 1.5;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid rgba(255,255,255,0.15);
    border-left: none;
  }

  .site-nav a[aria-current="page"],
  .site-nav a.active {
    border-bottom: 1px solid rgba(255,255,255,0.15);
    font-weight: 700;
  }

  .nav-toggle {
    display: block;
  }
}

@media (max-width: 480px) {
  .container { padding: 0 var(--space-sm); }
  .report-entry { padding: var(--space-md); }
}