:root {
  --ink: #172331;
  --muted: #5e6b78;
  --line: #d8e0e7;
  --paper: #ffffff;
  --soft: #f4f7f8;
  --road: #2d3439;
  --orange: #ff4b18;
  --orange-dark: #c93613;
  --blue: #126b8f;
  --green: #1f7a5b;
  --warning: #fff2cf;
  --shadow: 0 18px 55px rgba(23, 35, 49, 0.12);
  --header-offset: 92px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  line-height: 1.5;
  overflow-x: hidden;
}

body,
button,
input {
  letter-spacing: 0;
}

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

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: 0.5rem;
  z-index: 20;
  transform: translateY(-140%);
  background: var(--ink);
  color: var(--paper);
  padding: 0.6rem 0.8rem;
  border-radius: 6px;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  min-height: 76px;
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
  border-radius: 6px;
  color: var(--ink);
  font-size: 1.25rem;
  font-weight: 950;
  text-decoration: none;
}

.brand img {
  width: 48px;
  height: 48px;
  object-fit: cover;
  object-position: center 11%;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.35rem;
  flex-wrap: wrap;
  font-size: 0.92rem;
  font-weight: 700;
}

.nav a {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.65rem;
  border-radius: 8px;
  text-decoration: none;
}

.nav a:hover,
.nav a:focus-visible {
  background: var(--soft);
}

.section-inner {
  width: min(1120px, 100%);
  margin: 0 auto;
  padding-right: 1rem;
  padding-left: 1rem;
}

.checker-section {
  background:
    linear-gradient(120deg, rgba(255, 75, 24, 0.08), rgba(18, 107, 143, 0.08)),
    var(--soft);
}

#checker,
#measure,
#report,
#about {
  scroll-margin-top: var(--header-offset);
}

.checker-grid {
  display: grid;
  gap: 1.25rem;
  padding-top: 2rem;
  padding-bottom: 2rem;
}

.checker-copy h1,
.measure-section h2,
.learn-section h2,
.report-section h2,
.about-section h2 {
  margin: 0;
  font-size: 2.1rem;
  line-height: 1.05;
}

.eyebrow {
  margin: 0 0 0.55rem;
  color: var(--orange-dark);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.lead {
  margin: 1rem 0 0;
  max-width: 42rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.closure-preview {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin-top: 1.2rem;
}

.closure-card {
  display: grid;
  gap: 0.55rem;
  padding: 0.85rem;
  border: 1px solid rgba(216, 224, 231, 0.9);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
}

.closure-card span {
  font-size: 0.78rem;
  font-weight: 950;
  text-transform: uppercase;
}

.closure-card-good span {
  color: var(--green);
}

.closure-card-bad span {
  color: var(--orange-dark);
}

.closure-card strong {
  font-size: 0.95rem;
}

.closure-card img {
  width: 100%;
  aspect-ratio: 1123 / 335;
  object-fit: contain;
  border-radius: 8px;
  background: var(--road);
}

.checker-tool {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 1rem;
}

.control-group + .control-group {
  margin-top: 1.2rem;
}

.control-group h2 {
  margin: 0 0 0.65rem;
  font-size: 1rem;
}

.segmented-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem;
}

.lane-grid {
  grid-template-columns: 1fr;
}

.option-button,
.secondary-action {
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.option-button {
  padding: 0.65rem 0.5rem;
}

.option-button:hover,
.option-button:focus-visible,
.secondary-action:hover,
.secondary-action:focus-visible {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(18, 107, 143, 0.16);
  outline: none;
}

.option-button.is-active {
  border-color: var(--orange);
  background: #fff0eb;
  color: var(--orange-dark);
}

.helper-text {
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.flagger-help {
  margin-bottom: 0.75rem;
}

.flagger-help img {
  float: left;
  width: 58px;
  height: auto;
  margin: 0.1rem 0.75rem 0.25rem 0;
  object-fit: contain;
  object-position: center bottom;
}

.flagger-help .helper-text {
  margin: 0;
}

.result-panel {
  margin-top: 1.25rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
  scroll-margin-top: var(--header-offset);
}

.result-label {
  margin: 0;
  color: var(--muted);
  font-weight: 800;
}

.result-primary {
  margin-top: 0.25rem;
  color: var(--orange-dark);
  font-size: 2.4rem;
  line-height: 1;
  font-weight: 950;
}

.result-details {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.55rem;
  margin-top: 1rem;
}

.result-details div {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 1rem;
  min-height: 48px;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
}

.result-details span {
  min-width: 0;
  color: var(--muted);
  font-weight: 700;
}

.result-details strong {
  min-width: 0;
  text-align: right;
}

.red-flag {
  margin: 1rem 0 0;
  padding: 0.85rem;
  border-left: 4px solid var(--orange);
  border-radius: 6px;
  background: var(--warning);
  font-weight: 750;
}

.primary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 52px;
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  background: var(--orange);
  color: var(--paper);
  font-weight: 900;
  text-align: center;
  text-decoration: none;
}

.primary-action:hover,
.primary-action:focus-visible {
  background: var(--orange-dark);
  outline: 3px solid rgba(255, 75, 24, 0.26);
}

.safety-strip {
  border-bottom: 1px solid #eadb9c;
  background: #fff6cf;
  color: var(--ink);
}

.safety-strip .section-inner {
  display: grid;
  gap: 0.02rem;
  padding-top: 0.45rem;
  padding-bottom: 0.45rem;
  font-size: 0.84rem;
  line-height: 1.25;
}

.safety-strip span {
  color: #463d1d;
}

.report-section {
  padding: 2.4rem 0;
}

.measure-section {
  padding: 2.4rem 0 1.25rem;
}

.measure-grid,
.learn-grid,
.report-grid,
.about-grid {
  display: grid;
  gap: 1.25rem;
}

.measure-grid p,
.learn-grid p,
.report-grid p,
.about-grid p {
  margin: 0.9rem 0 0;
  color: var(--muted);
}

.formula {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.38rem;
  flex-wrap: nowrap;
  margin: 0;
  padding: 0.7rem;
  font-weight: 900;
  white-space: nowrap;
  background: var(--paper);
  border-top: 1px solid var(--line);
}

.formula span,
.formula strong {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0.45rem 0.55rem;
  border-radius: 8px;
  background: var(--soft);
}

.formula strong {
  background: #e9f5f0;
  color: var(--green);
}

.measure-visual {
  margin: 0;
  overflow: hidden;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--paper);
  box-shadow: var(--shadow);
}

.measure-visual img {
  width: 100%;
  height: auto;
}

.reference-table-wrap {
  margin-top: 1rem;
}

.reference-table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  overflow: hidden;
  font-weight: 850;
}

.reference-table caption {
  margin-bottom: 0.55rem;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 900;
  text-align: left;
  text-transform: uppercase;
}

.reference-table th,
.reference-table td {
  padding: 0.65rem 0.8rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

.reference-table th {
  background: var(--soft);
  color: var(--muted);
  font-size: 0.82rem;
  text-transform: uppercase;
}

.reference-table td:last-child,
.reference-table th:last-child {
  text-align: right;
}

.reference-table tbody tr:last-child td {
  border-bottom: 0;
}

.learn-section {
  padding: 1.35rem 0 2.4rem;
  background: var(--soft);
}

.red-flags {
  display: grid;
  gap: 0.6rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.watch-panel h3 {
  margin: 0;
  font-size: 1.1rem;
}

.watch-panel p {
  margin: 0.55rem 0 0.85rem;
  color: var(--muted);
}

.watch-panel .cone-note {
  padding: 0.75rem 0.85rem;
  border-radius: 6px;
  background: #ecf6fb;
  color: var(--ink);
  font-weight: 750;
}

.red-flags li {
  min-height: 48px;
  padding: 0.75rem 0.85rem;
  border-left: 4px solid var(--orange);
  border-radius: 6px;
  background: var(--paper);
  font-weight: 750;
}

.kentucky-note,
.disclaimer,
.report-safety,
.report-cta {
  padding: 0.85rem;
  border-radius: 8px;
  background: #ecf6fb;
  color: var(--ink) !important;
}

.contact-guide,
.report-copy {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
}

.contact-guide h3,
.report-copy h3 {
  margin: 0;
  font-size: 1.05rem;
}

.contact-card {
  display: grid;
  gap: 0.12rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--line);
}

.contact-card:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.contact-card strong {
  color: var(--ink);
}

.contact-card span {
  color: var(--muted);
}

.contact-card-urgent strong {
  color: var(--orange-dark);
}

.report-actions {
  display: grid;
  gap: 0.6rem;
}

.report-actions a {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  color: var(--ink);
  font-weight: 900;
  text-align: center;
  text-decoration: none;
}

.report-actions a:first-child {
  border-color: var(--orange);
  background: #fff0eb;
  color: var(--orange-dark);
}

.report-actions a:hover,
.report-actions a:focus-visible {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(18, 107, 143, 0.16);
  outline: none;
}

.report-textarea {
  width: 100%;
  min-height: 10rem;
  margin-top: 0.85rem;
  padding: 0.75rem;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  line-height: 1.45;
}

.secondary-action {
  width: 100%;
  margin-top: 0.8rem;
  padding: 0.65rem 1rem;
}

.copy-status {
  min-height: 1.5rem;
  margin-top: 0.5rem !important;
  color: var(--green) !important;
  font-weight: 800;
}

.report-safety {
  border-left: 4px solid var(--orange);
  background: var(--warning);
}

.report-safety,
.report-cta {
  display: grid;
  gap: 0.25rem;
}

.report-cta strong {
  color: var(--orange-dark);
  font-size: 1.15rem;
}

.about-section {
  padding: 2.4rem 0;
  background: var(--soft);
  min-height: calc(100vh - 76px);
}

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--ink);
  color: var(--paper);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1rem;
  padding-bottom: 1rem;
  font-size: 0.9rem;
}

.footer-inner a {
  color: #c9f0ff;
}

*:focus-visible {
  outline: 3px solid rgba(18, 107, 143, 0.35);
  outline-offset: 2px;
}

@media (min-width: 640px) {
  .site-header {
    padding-inline: 1.5rem;
  }

  .brand img {
    width: 52px;
    height: 52px;
  }

  .checker-copy h1,
  .measure-section h2,
  .learn-section h2,
  .report-section h2,
  .about-section h2 {
    font-size: 2.7rem;
  }

  .checker-tool {
    padding: 1.25rem;
  }

  .segmented-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

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

@media (min-width: 900px) {
  .checker-grid {
    grid-template-columns: 0.85fr 1.15fr;
    align-items: center;
    min-height: calc(100vh - 76px);
    padding-top: 3rem;
    padding-bottom: 3rem;
  }

  .checker-copy h1 {
    font-size: 3.3rem;
  }

  .measure-grid,
  .learn-grid,
  .report-grid,
  .about-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }

  .report-grid {
    grid-template-columns: 0.9fr 0.7fr 1fr;
  }

  .report-copy {
    grid-column: span 2;
  }

}

@media (max-width: 430px) {
  .site-header {
    align-items: flex-start;
    min-height: 92px;
  }

  .brand {
    font-size: 1.05rem;
  }

  .brand img {
    width: 42px;
    height: 42px;
  }

  .nav {
    width: 100%;
    justify-content: space-between;
    font-size: 0.84rem;
  }

  .nav a {
    min-height: 34px;
    padding: 0.34rem 0.45rem;
  }

  .checker-copy h1,
  .measure-section h2,
  .learn-section h2,
  .report-section h2,
  .about-section h2 {
    font-size: 1.82rem;
  }

  .checker-grid {
    gap: 1rem;
    padding-top: 1.35rem;
    padding-bottom: 1.35rem;
  }

  .measure-section,
  .report-section,
  .about-section {
    padding-top: 1.35rem;
    padding-bottom: 1.35rem;
  }

  .about-section {
    min-height: auto;
  }

  .learn-section {
    padding-top: 1rem;
    padding-bottom: 1.35rem;
  }

  .measure-grid,
  .learn-grid,
  .report-grid,
  .about-grid {
    gap: 0.85rem;
  }

  .reference-table-wrap {
    margin-top: 0.65rem;
  }

  .measure-grid p,
  .learn-grid p,
  .report-grid p,
  .about-grid p {
    margin-top: 0.6rem;
  }

  .result-primary {
    font-size: 2rem;
  }

  .result-details div {
    align-items: flex-start;
    gap: 0.25rem;
  }

  .result-details div {
    grid-template-columns: 1fr;
  }

  .result-details strong {
    text-align: left;
  }

  .flagger-help img {
    width: 50px;
    margin-right: 0.65rem;
  }

  .safety-strip .section-inner {
    display: grid;
    gap: 0.02rem;
    padding-top: 0.38rem;
    padding-bottom: 0.38rem;
    font-size: 0.78rem;
    line-height: 1.22;
  }

  .formula {
    gap: 0.22rem;
    font-size: 0.74rem;
  }

  .formula span,
  .formula strong {
    min-height: 34px;
    padding: 0.35rem 0.34rem;
    border-radius: 7px;
  }

}