:root {
  --ink: #17202a;
  --muted: #52606d;
  --surface: #ffffff;
  --surface-soft: #f3f6f8;
  --border: #c8d1da;
  --brand: #123a63;
  --brand-dark: #0b2947;
  --accent: #ffdd00;
  --focus: #ffbf47;
  --success-bg: #e8f5ec;
  --danger: #b42318;
  --danger-bg: #fff0ee;
  --shadow: 0 12px 30px rgba(23, 32, 42, 0.08);
  --radius: 0.75rem;
  font-family: Arial, Helvetica, sans-serif;
  color-scheme: light;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--surface-soft);
  color: var(--ink);
  line-height: 1.55;
}

a {
  color: var(--brand);
}

a:hover {
  text-decoration-thickness: 0.15em;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 4px solid var(--focus);
  outline-offset: 3px;
}

.container {
  width: min(100% - 2rem, 70rem);
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -5rem;
  z-index: 100;
  padding: 0.75rem 1rem;
  background: var(--accent);
  color: #111;
  font-weight: 700;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  background: var(--brand-dark);
  color: white;
}

.header-inner,
.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-block: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  width: fit-content;
  color: white;
  font-size: 1.15rem;
  font-weight: 700;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2rem;
  background: var(--accent);
  color: #111;
  border-radius: 0.2rem;
  font-weight: 800;
}

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

.nav-list a {
  color: white;
  font-weight: 700;
  text-underline-offset: 0.3rem;
}

.nav-list a[aria-current="page"] {
  text-decoration-thickness: 0.2rem;
  text-decoration-color: var(--accent);
}

.hero {
  background: var(--brand);
  color: white;
  padding-block: 2.5rem;
}

.hero-grid {
  display: grid;
  gap: 2rem;
  align-items: center;
}

.eyebrow {
  margin: 0 0 0.4rem;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 16ch;
  margin-bottom: 0.8rem;
  font-size: clamp(2rem, 8vw, 3.5rem);
  line-height: 1.05;
}

.hero-copy {
  max-width: 48rem;
  margin-bottom: 0;
  font-size: 1.08rem;
}

.number-plate,
.result-registration {
  width: fit-content;
  padding: 0.55rem 0.8rem;
  border: 3px solid #111;
  border-radius: 0.35rem;
  background: #f5f5f0;
  color: #111;
  font-family: Arial, Helvetica, sans-serif;
  font-weight: 800;
  letter-spacing: 0.12em;
  box-shadow: inset 0 0 0 2px #ddd;
}

.number-plate {
  font-size: clamp(1.5rem, 7vw, 2.6rem);
}

.lookup-section {
  display: grid;
  gap: 1.25rem;
  margin-block: 2rem;
}

.panel,
.info-panel,
.results-section {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.panel,
.info-panel {
  padding: 1.25rem;
}

.info-panel {
  align-self: start;
}

.info-panel ul {
  padding-left: 1.3rem;
}

.form-group {
  margin-bottom: 1.3rem;
}

.form-group > label,
legend {
  display: block;
  margin-bottom: 0.45rem;
  font-weight: 700;
}

fieldset {
  min-width: 0;
  padding: 0;
  border: 0;
}

input[type="text"],
select {
  width: 100%;
  min-height: 3rem;
  border: 2px solid #6b7785;
  border-radius: 0.3rem;
  background: white;
  color: var(--ink);
  font: inherit;
}

input[type="text"] {
  max-width: 18rem;
  padding: 0.55rem 0.7rem;
  font-size: 1.2rem;
  font-weight: 700;
  text-transform: uppercase;
}

select {
  max-width: 18rem;
  padding: 0.55rem;
}

input[aria-invalid="true"] {
  border-color: var(--danger);
}

.hint {
  color: var(--muted);
}

.error-message {
  min-height: 1.4rem;
  margin: 0.35rem 0 0;
  color: var(--danger);
  font-weight: 700;
}

.option-row {
  display: flex;
  gap: 0.65rem;
  align-items: flex-start;
  margin-block: 0.55rem;
}

.option-row input {
  width: 1.25rem;
  height: 1.25rem;
  margin-top: 0.12rem;
}

.radio-grid {
  display: flex;
  gap: 1.5rem;
}

.primary-button {
  min-height: 3rem;
  padding: 0.7rem 1.2rem;
  border: 0;
  border-radius: 0.3rem;
  background: var(--brand);
  color: white;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.primary-button:hover {
  background: var(--brand-dark);
}

.primary-button:disabled {
  cursor: wait;
  opacity: 0.65;
}

.results-section {
  margin-block: 2rem;
  padding: 1.25rem;
}

.results-header {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.status-grid,
.details-grid {
  display: grid;
  gap: 1rem;
}

.status-card {
  display: grid;
  gap: 0.2rem;
  padding: 1rem;
  border-left: 0.35rem solid var(--brand);
  background: var(--surface-soft);
}

.status-card strong {
  font-size: 1.35rem;
}

.status-label {
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
}

.detail-card {
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
}

.detail-card dt {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 700;
}

.detail-card dd {
  margin: 0.2rem 0 0;
  font-size: 1.05rem;
  font-weight: 700;
}

.status-message {
  margin-block: 1rem 2rem;
  padding: 1rem;
  border-left: 0.35rem solid var(--danger);
  background: var(--danger-bg);
  font-weight: 700;
}

.recall-badge {
  width: fit-content;
  padding: 0.35rem 0.7rem;
  border-radius: 0.3rem;
  background: var(--surface-soft);
  font-weight: 700;
}

.recall-badge.recall-yes {
  background: var(--danger-bg);
  color: var(--danger);
}

.recall-badge.recall-no {
  background: var(--success-bg);
}

.mot-list {
  display: grid;
  gap: 1rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.mot-test {
  padding: 1rem;
  border: 1px solid var(--border);
  border-left: 0.35rem solid var(--brand);
  border-radius: 0.5rem;
}

.mot-test.mot-passed {
  border-left-color: #00703c;
}

.mot-test.mot-failed {
  border-left-color: var(--danger);
}

.mot-test-header {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  align-items: baseline;
  margin-bottom: 0.6rem;
}

.mot-result {
  font-size: 1.2rem;
}

.mot-passed .mot-result {
  color: #00703c;
}

.mot-failed .mot-result {
  color: var(--danger);
}

.mot-meta {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.25rem 1rem;
  margin: 0 0 0.8rem;
}

.mot-meta dt {
  color: var(--muted);
  font-weight: 700;
}

.mot-meta dd {
  margin: 0;
}

.mot-defects-heading {
  margin: 0 0 0.4rem;
  font-size: 1rem;
}

.mot-defects {
  display: grid;
  gap: 0.4rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.defect {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: baseline;
}

.defect-type {
  padding: 0.1rem 0.5rem;
  border-radius: 0.25rem;
  background: var(--surface-soft);
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
}

.defect-dangerous .defect-type,
.defect-major .defect-type,
.defect-fail .defect-type {
  background: var(--danger-bg);
  color: var(--danger);
}

.mot-no-defects {
  margin: 0;
  color: var(--muted);
}

.site-footer {
  margin-top: 3rem;
  background: #202a34;
  color: white;
}

.site-footer p {
  margin-bottom: 0;
}

.prose-page {
  max-width: 52rem;
  min-height: 65vh;
  padding-block: 3rem;
}

.prose-page h1 {
  color: var(--brand-dark);
}

.prose-page h2 {
  margin-top: 2rem;
}

.text-link {
  font-weight: 700;
}

[hidden] {
  display: none !important;
}

/* Tablet and larger: progressive enhancement from the mobile-first base. */
@media (min-width: 48rem) {
  .header-inner,
  .footer-inner,
  .results-header {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  .hero-grid {
    grid-template-columns: 1.6fr 1fr;
  }

  .lookup-section {
    grid-template-columns: minmax(0, 1.6fr) minmax(16rem, 0.8fr);
  }

  .panel,
  .info-panel,
  .results-section {
    padding: 2rem;
  }

  .status-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .details-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* Road tax and ULEZ estimate cards */
.card-notes {
  margin: 0.3rem 0 0;
  padding-left: 1.1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.status-card.ulez-compliant,
.status-card.ulez-likely-compliant {
  border-left-color: #00703c;
}

.status-card.ulez-not-compliant,
.status-card.ulez-likely-not-compliant {
  border-left-color: var(--danger);
}

/* Safety recalls */
.mot-test.recall-item {
  border-left-color: #b45d00;
}

/* Seller check */
.company-name {
  margin: 0 0 0.6rem;
}

.company-flags {
  margin: 0.8rem 0;
  padding-left: 1.2rem;
  color: var(--danger);
  font-weight: 700;
}

.company-search {
  display: grid;
  gap: 0.6rem;
  padding: 0;
  list-style: none;
}

.link-button {
  padding: 0;
  border: 0;
  background: none;
  color: var(--brand);
  font: inherit;
  font-weight: 700;
  text-decoration: underline;
  cursor: pointer;
}

.link-button:focus-visible {
  outline: 4px solid var(--focus);
}

/* Running costs */
.inline-form {
  display: grid;
  gap: 0 1rem;
  margin-top: 1.25rem;
}

.inline-form input[type="number"] {
  width: 100%;
  max-width: 14rem;
  min-height: 3rem;
  padding: 0.5rem 0.75rem;
  border: 2px solid #6b7785;
  border-radius: 0.3rem;
  background: white;
  color: var(--ink);
  font: inherit;
}

/* Clean air zones and chargers */
#caz-output,
#charger-output {
  margin-top: 1.5rem;
}

.zone-item.zone-charge {
  border-left-color: var(--danger);
}

.zone-item.zone-meets-standard,
.zone-item.zone-not-covered {
  border-left-color: #00703c;
}

.zone-charge .mot-result {
  color: var(--danger);
}

.charger-item {
  border-left-color: #00703c;
}

@media (min-width: 48rem) {
  .inline-form {
    grid-template-columns: repeat(2, minmax(0, 14rem)) auto;
    align-items: end;
  }
}

/* Brand logo */
.logo { display: block; height: 3rem; width: auto; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.footer-links { display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem; padding: 0; margin: 0 0 0.75rem; list-style: none; }
.footer-links a { color: #fff; font-weight: 700; }

/* Cookie / privacy notice */
.consent {
  position: fixed; inset: auto 1rem 1rem 1rem; z-index: 50;
  max-width: 36rem; margin-inline: auto; padding: 1rem 1.25rem;
  border-radius: var(--radius); background: var(--brand-dark); color: #fff;
  box-shadow: 0 12px 30px rgba(0,0,0,0.35);
}
.consent p { margin: 0 0 0.75rem; font-size: 0.95rem; }
.consent a { color: var(--accent); font-weight: 700; }
.consent-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.consent button {
  min-height: 2.75rem; padding: 0.5rem 1.1rem; border: 2px solid var(--accent); border-radius: 0.3rem;
  background: var(--accent); color: #111; font: inherit; font-weight: 800; cursor: pointer;
}
.consent button.secondary { background: transparent; color: #fff; }

/* Legal pages */
.legal-table { width: 100%; border-collapse: collapse; margin: 1rem 0 1.5rem; font-size: 0.95rem; }
.legal-table th, .legal-table td { padding: 0.6rem 0.7rem; border: 1px solid var(--border); text-align: left; vertical-align: top; }
.legal-table th { background: var(--surface-soft); }
.prose-page table { display: block; overflow-x: auto; }