/* ================================================
   CheckMyEnergyClaim.co.uk — Shared Design System v3
   Navy / Blue / Teal colour scheme
   Space Grotesk + Plus Jakarta Sans + Space Mono
   ================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Space+Mono:ital,wght@0,400;0,700;1,400&display=swap');

/* =====================
   DESIGN TOKENS — V3
===================== */
:root {
  /* Core palette */
  --navy:        #0B1F3A;
  --navy-mid:    #0E2A50;
  --navy-light:  #1A3356;
  --blue:        #1D4ED8;
  --blue-vivid:  #2563EB;
  --blue-glow:   rgba(37,99,235,0.15);
  --blue-light:  #EFF6FF;
  --blue-mid:    #BFDBFE;
  --teal:        #0891B2;
  --teal-light:  #E0F2FE;
  --green:       #059669;
  --green-light: #ECFDF5;
  --text:        #0F172A;
  --text-muted:  #475569;
  --text-faint:  #94A3B8;
  --bg:          #F8FAFC;
  --surface:     #FFFFFF;
  --border:      #E2E8F0;
  --border-s:    #CBD5E1;
  --white:       #FFFFFF;
  --sh-sm:       0 1px 3px rgba(0,0,0,0.07), 0 1px 2px rgba(0,0,0,0.04);
  --sh-md:       0 4px 16px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
  --sh-lg:       0 20px 48px rgba(0,0,0,0.1), 0 4px 12px rgba(0,0,0,0.06);
  --sh-blue:     0 8px 30px rgba(37,99,235,0.22);
  --r-sm:  6px;
  --r-md:  12px;
  --r-lg:  20px;
  --r-xl:  28px;

  /* Legacy aliases — keeps existing inner-page inline CSS working */
  --charcoal:   var(--navy);
  --slate:      var(--navy-mid);
  --slate-2:    var(--navy-light);
  --parchment:  var(--bg);
  --cream:      var(--bg);
  --gold:       var(--blue-vivid);
  --gold-light: var(--blue);
  --gold-dim:   var(--blue-glow);
  --ink:        var(--text);
  --body-text:  var(--text-muted);
  --muted:      var(--text-faint);
  --rule:       var(--border);
  --rule-dark:  rgba(255,255,255,0.12);
  --white-80:   rgba(255,255,255,0.8);
  --white-50:   rgba(255,255,255,0.5);
  --white-20:   rgba(255,255,255,0.2);
  --white-08:   rgba(255,255,255,0.08);
}

/* =====================
   RESET
===================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Plus Jakarta Sans', sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue-vivid); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--blue); }

/* =====================
   TYPOGRAPHY
===================== */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  line-height: 1.12;
  color: var(--text);
  letter-spacing: -0.01em;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

section { padding: 6rem 0; }

.section-label {
  font-family: 'Space Mono', monospace;
  font-size: 0.64rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
  display: block;
  margin-bottom: 1rem;
}

hr.rule { border: none; border-top: 1px solid var(--border); margin: 2rem 0; }
hr.rule--dark { border-color: rgba(255,255,255,0.12); }

/* =====================
   BUTTONS
===================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.85rem 1.8rem;
  border-radius: var(--r-sm);
  transition: all 0.2s;
  cursor: pointer;
  border: 2px solid transparent;
  text-decoration: none;
  letter-spacing: 0;
}

.btn-primary {
  background: var(--blue-vivid);
  color: var(--white);
  border-color: var(--blue-vivid);
  box-shadow: var(--sh-blue);
}
.btn-primary:hover {
  background: var(--blue);
  border-color: var(--blue);
  color: var(--white);
  transform: translateY(-1px);
  box-shadow: 0 12px 40px rgba(37,99,235,0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--blue-vivid);
  border-color: var(--blue-vivid);
}
.btn-secondary:hover { background: var(--blue-light); color: var(--blue); }

.btn-dark {
  background: var(--navy);
  color: var(--white);
  border-color: var(--navy);
}
.btn-dark:hover { background: var(--navy-mid); color: var(--white); }

.btn-white {
  background: var(--white);
  color: var(--blue-vivid);
  border-color: var(--white);
  box-shadow: var(--sh-md);
}
.btn-white:hover { background: var(--blue-light); color: var(--blue); }

.btn-lg { font-size: 1rem; padding: 1rem 2.2rem; border-radius: var(--r-md); }

/* =====================
   NAVIGATION
===================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--sh-sm);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 2rem;
  max-width: 1280px;
  margin: 0 auto;
}

.nav-logo {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  text-decoration: none;
}
.nav-logo span { color: var(--blue-vivid); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--text); }

.nav-cta { font-size: 0.85rem !important; padding: 0.6rem 1.4rem !important; }

.nav-mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.4rem;
}
.nav-mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
  border-radius: 2px;
  transition: all 0.3s;
}

.nav-mobile-menu {
  display: none;
  position: fixed;
  top: 57px; left: 0; right: 0;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  z-index: 999;
  padding: 1rem 0;
  box-shadow: var(--sh-md);
}
.nav-mobile-menu.open { display: block; }
.nav-mobile-menu ul { list-style: none; padding: 0; }
.nav-mobile-menu ul li { border-bottom: 1px solid var(--border); }
.nav-mobile-menu ul li:last-child { border-bottom: none; }
.nav-mobile-menu ul li a {
  display: block;
  padding: 0.9rem 2rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}
.nav-mobile-menu ul li a:hover { color: var(--blue-vivid); }

/* =====================
   PAGE HERO
===================== */
.page-hero {
  background: var(--navy);
  padding: 9rem 0 5rem;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
}
.page-hero::after {
  content: '';
  position: absolute;
  top: -200px; right: -200px;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(37,99,235,0.25) 0%, transparent 60%);
  pointer-events: none;
}

.page-hero-inner {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.page-hero .section-label { color: var(--blue-mid); }

.page-hero h1 {
  font-size: clamp(2.4rem, 4vw, 3.8rem);
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.page-hero-sub {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.52);
  max-width: 620px;
  line-height: 1.75;
}

/* =====================
   BREADCRUMB
===================== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}
.breadcrumb a,
.breadcrumb span {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.breadcrumb a { color: rgba(255,255,255,0.4); text-decoration: none; }
.breadcrumb a:hover { color: rgba(255,255,255,0.7); }
.breadcrumb span { color: rgba(255,255,255,0.25); }
.breadcrumb-sep { color: rgba(255,255,255,0.2); }

/* =====================
   PROSE (legal / policy pages)
===================== */
.prose {
  max-width: 780px;
  color: var(--text-muted);
}
.prose h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  margin-top: 3.5rem;
  margin-bottom: 1rem;
  padding-top: 3.5rem;
  border-top: 1px solid var(--border);
  line-height: 1.2;
}
.prose h2:first-of-type { margin-top: 0; padding-top: 0; border-top: none; }
.prose h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}
.prose p { margin-bottom: 1.25rem; }
.prose ul, .prose ol { padding-left: 1.5rem; margin-bottom: 1.25rem; }
.prose li { margin-bottom: 0.5rem; }
.prose a { color: var(--blue-vivid); }
.prose strong { font-weight: 600; color: var(--text); }
.prose .last-updated {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 2.5rem;
  display: block;
}

/* =====================
   FORMS
===================== */
.form-group { margin-bottom: 1.1rem; }

.form-group label {
  display: block;
  font-family: 'Space Mono', monospace;
  font-size: 0.63rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  border: 1px solid var(--border);
  color: var(--text);
  background: var(--white);
  padding: 0.8rem 1rem;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.9rem;
  border-radius: var(--r-sm);
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
  -webkit-appearance: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--blue-vivid);
  box-shadow: 0 0 0 3px var(--blue-glow);
}
.form-group textarea { resize: vertical; min-height: 140px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }

/* Dark form variant — still works if used */
.form-group--dark label { color: rgba(255,255,255,0.5); }
.form-group--dark input,
.form-group--dark select,
.form-group--dark textarea {
  background: var(--navy-mid);
  border-color: rgba(255,255,255,0.12);
  color: var(--white);
}
.form-group--dark input::placeholder,
.form-group--dark textarea::placeholder { color: rgba(255,255,255,0.25); }

/* =====================
   ACCORDION
===================== */
.accordion-item { border-bottom: 1px solid var(--border); }

.accordion-trigger {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  padding: 1.3rem 0;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  transition: color 0.2s;
}
.accordion-trigger:hover { color: var(--blue-vivid); }

.accordion-trigger svg {
  width: 16px; height: 16px;
  flex-shrink: 0;
  fill: var(--text-faint);
  transition: transform 0.3s, fill 0.2s;
}
.accordion-trigger.open svg {
  transform: rotate(45deg);
  fill: var(--blue-vivid);
}

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.accordion-body p {
  padding-bottom: 1.4rem;
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.75;
}

/* =====================
   TRUST BAR
===================== */
#trust-bar {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 2.2rem 0;
}
.trust-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}
.trust-item { display: flex; align-items: center; gap: 0.75rem; }
.trust-item svg { width: 18px; height: 18px; flex-shrink: 0; fill: var(--blue-vivid); }
.trust-item-text strong { display: block; font-size: 0.83rem; font-weight: 600; color: var(--text); }
.trust-item-text span {
  font-size: 0.73rem;
  color: var(--text-faint);
  font-family: 'Space Mono', monospace;
  letter-spacing: 0.05em;
}
.trust-bar-divider { width: 1px; height: 36px; background: var(--border); flex-shrink: 0; }

/* =====================
   FINAL CTA
===================== */
#final-cta {
  background: var(--navy);
  padding: 7rem 0;
  position: relative;
  overflow: hidden;
}
#final-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 36px 36px;
}
#final-cta::after {
  content: '';
  position: absolute;
  bottom: -150px; right: -150px;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(8,145,178,0.2) 0%, transparent 60%);
}

.cta-inner {
  position: relative;
  z-index: 1;
  max-width: 680px;
}
.cta-inner h2 {
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  color: var(--white);
  margin-bottom: 1.25rem;
  letter-spacing: -0.03em;
}
.cta-inner p {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.5);
  margin-bottom: 2.5rem;
  max-width: 500px;
}
.cta-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.cta-inline-trust {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}
.cta-inline-trust span {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.cta-inline-trust span::before { content: '✓'; color: var(--teal); }

/* =====================
   FOOTER
===================== */
footer {
  background: #060E1A;
  padding: 5rem 0 2.5rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}
.footer-brand .nav-logo { font-size: 1rem; color: var(--white); display: inline-block; margin-bottom: 1rem; }
.footer-brand p { font-size: 0.81rem; color: rgba(255,255,255,0.38); line-height: 1.7; margin-bottom: 1.25rem; max-width: 280px; }
.footer-ico,
.footer-badge {
  display: inline-block;
  font-family: 'Space Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.07em;
  color: rgba(255,255,255,0.35);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 0.3rem 0.7rem;
  border-radius: var(--r-sm);
}
.footer-col h4 {
  font-family: 'Space Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  margin-bottom: 1.2rem;
  font-weight: 400;
}
.footer-col ul { list-style: none; padding: 0; }
.footer-col ul li { margin-bottom: 0.6rem; }
.footer-col ul li a { font-size: 0.83rem; color: rgba(255,255,255,0.42); text-decoration: none; transition: color 0.2s; }
.footer-col ul li a:hover { color: var(--white); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-bottom p { font-size: 0.73rem; color: rgba(255,255,255,0.28); }
.footer-legal-links { display: flex; gap: 1.5rem; }
.footer-legal-links a { font-size: 0.73rem; color: rgba(255,255,255,0.32); text-decoration: none; transition: color 0.2s; }
.footer-legal-links a:hover { color: var(--white); }
.footer-disclaimer {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.05);
  font-size: 0.7rem;
  color: rgba(255,255,255,0.18);
  line-height: 1.65;
}
.footer-disclaimer p { margin-bottom: 0; }

/* =====================
   COOKIE BANNER
===================== */
#cookie-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--white);
  border-top: 2px solid var(--blue-vivid);
  padding: 1.2rem 2rem;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.1);
}
#cookie-banner p { font-size: 0.8rem; color: var(--text-muted); max-width: 640px; margin: 0; }
#cookie-banner p a { color: var(--blue-vivid); }
.cookie-actions { display: flex; gap: 0.75rem; flex-shrink: 0; }
.btn-cookie-accept { font-size: 0.77rem; padding: 0.55rem 1.2rem; }
.btn-cookie-reject {
  font-size: 0.77rem;
  padding: 0.55rem 1.2rem;
  background: transparent;
  border: 1.5px solid var(--border-s);
  color: var(--text-muted);
  border-radius: var(--r-sm);
  cursor: pointer;
  font-family: 'Plus Jakarta Sans', sans-serif;
  transition: border-color 0.2s, color 0.2s;
}
.btn-cookie-reject:hover { border-color: var(--text-muted); color: var(--text); }

/* =====================
   STICKY MOBILE CTA
===================== */
.sticky-mobile-cta {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  padding: 1rem 1.5rem;
  background: var(--navy);
  border-top: 1px solid rgba(255,255,255,0.12);
  z-index: 998;
}
.sticky-mobile-cta .btn { width: 100%; text-align: center; }

/* =====================
   SCROLL ANIMATIONS
===================== */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.animate-on-scroll.in-view { opacity: 1; transform: translateY(0); }

/* =====================
   RESPONSIVE
===================== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

@media (max-width: 768px) {
  html { font-size: 15px; }
  section { padding: 4rem 0; }
  .nav-links { display: none; }
  .nav-mobile-toggle { display: block; }
  .trust-bar-inner { flex-direction: column; align-items: flex-start; gap: 1.2rem; }
  .trust-bar-divider { display: none; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  #cookie-banner { flex-direction: column; align-items: flex-start; }
  .sticky-mobile-cta { display: block; }
  #cookie-banner { bottom: 68px; }
  .form-row { grid-template-columns: 1fr; }
  .page-hero { padding: 7rem 0 3rem; }
  .cta-actions { flex-wrap: wrap; }
}