/* AbleGauge — shared stylesheet
   Plain CSS, no build step. WCAG 2.1 AA target: 4.5:1 body text contrast,
   3:1 large text/UI components, visible focus states, no color-only
   status indicators (status text/icons are in the markup, not just here). */

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f4f6f8;
  --color-bg-card: #ffffff;
  --color-text: #1a1a2e;
  --color-text-muted: #44495a;
  --color-border: #c9d0da;
  --color-primary: #0a5c78;      /* dark teal — 4.5:1+ with white text */
  --color-primary-dark: #073f52;
  --color-primary-tint: #e5f1f4;
  --color-link: #0a5c78;
  --color-focus: #1b6ec2;

  --color-safe: #14602f;
  --color-safe-bg: #e5f6ea;
  --color-watch: #7a5300;
  --color-watch-bg: #fdf1d6;
  --color-near: #8a3300;
  --color-near-bg: #fce6d6;
  --color-review: #a3231a;
  --color-review-bg: #fbe2e0;

  --radius: 8px;
  --max-width: 960px;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2.5rem;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #12161c;
    --color-bg-alt: #1a202a;
    --color-bg-card: #1a202a;
    --color-text: #eef1f5;
    --color-text-muted: #b7bfcc;
    --color-border: #3a4250;
    --color-primary: #4fb3cf;
    --color-primary-dark: #77c9e0;
    --color-primary-tint: #16323b;
    --color-link: #6ec3dd;
    --color-focus: #6ec3dd;

    --color-safe: #6fd393;
    --color-safe-bg: #123522;
    --color-watch: #f0c766;
    --color-watch-bg: #3a2f0c;
    --color-near: #f3a06b;
    --color-near-bg: #402307;
    --color-review: #f5847a;
    --color-review-bg: #401410;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.55;
  font-size: 1.0625rem;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

img { max-width: 100%; }

a {
  color: var(--color-link);
  text-underline-offset: 2px;
}
a:hover { text-decoration-thickness: 2px; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-3);
}

/* Focus states — visible everywhere, never removed */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: var(--space-2) var(--space-3);
  z-index: 100;
  border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus {
  left: 0;
}

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

/* Header / nav */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 50;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-3);
  gap: var(--space-3);
}
.brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
}
.brand-accent { color: var(--color-primary); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-2);
  min-width: 44px;
  min-height: 44px;
}
.nav-toggle-icon,
.nav-toggle-icon::before,
.nav-toggle-icon::after {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  position: relative;
}
.nav-toggle-icon::before { content: ""; position: absolute; top: -6px; width: 20px; height: 2px; background: var(--color-text); }
.nav-toggle-icon::after { content: ""; position: absolute; top: 6px; width: 20px; height: 2px; background: var(--color-text); }

.site-nav ul {
  display: flex;
  gap: var(--space-4);
  list-style: none;
  margin: 0;
  padding: 0;
  align-items: center;
}
.site-nav a {
  text-decoration: none;
  color: var(--color-text);
  font-weight: 500;
  padding: var(--space-2);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.nav-cta {
  background: var(--color-primary);
  color: #fff !important;
  border-radius: var(--radius);
  padding-inline: var(--space-3) !important;
}
.nav-cta:hover { background: var(--color-primary-dark); }

@media (max-width: 720px) {
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .site-nav {
    display: none;
    position: absolute;
    left: 0; right: 0; top: 100%;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
  }
  .site-nav.is-open { display: block; }
  .site-nav ul {
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-3);
    gap: var(--space-1);
  }
}

/* QR panel — per master-brief.md §18: shown on desktop only (a visitor
   already on their phone doesn't need a QR code to reach their own
   phone's store). Hidden below the same 720px breakpoint used above. */
.qr-panel {
  display: flex;
  gap: var(--space-3);
  align-items: center;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-3);
  margin-block-start: var(--space-4);
}
.qr-panel img,
.qr-panel canvas {
  border-radius: calc(var(--radius) / 2);
  background: #fff;
  padding: var(--space-1);
  border: 1px solid var(--color-border);
  width: 128px;
  height: 128px;
  flex-shrink: 0;
}
.qr-panel-text h3 { margin-block: 0 var(--space-1); font-size: 1rem; }
.qr-panel-text p { margin: 0; }
.qr-panel-url {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  word-break: break-all;
}
@media (max-width: 720px) {
  .qr-panel { display: none; }
}

/* Layout blocks */
main { display: block; }
.section { padding-block: var(--space-5); }
.section-alt { background: var(--color-bg-alt); }
h1, h2, h3, h4 { line-height: 1.2; }
h1 { font-size: clamp(1.75rem, 1.3rem + 2vw, 2.5rem); margin-top: 0; }
h2 { font-size: 1.5rem; margin-top: var(--space-5); }
h3 { font-size: 1.15rem; }
.lede { font-size: 1.2rem; color: var(--color-text-muted); }

.hero {
  padding-block: var(--space-5);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-4);
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius);
  font-weight: 600;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  font-size: 1rem;
}
.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-secondary:hover { background: var(--color-primary-tint); }

.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-4);
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-3);
}

.steps {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-3);
  counter-reset: step;
}
.steps li {
  counter-increment: step;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-4);
  background: var(--color-bg-card);
}
.steps li::before {
  content: counter(step);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-weight: 700;
  margin-bottom: var(--space-2);
}

/* Trust strip */
.trust-strip {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-primary-tint);
  padding: var(--space-4);
}

/* Disclaimer bar — persistent but not a wall of text */
.disclaimer-bar {
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  padding: var(--space-3) var(--space-4);
  margin-block: var(--space-4);
  font-size: 0.95rem;
}
.disclaimer-bar p { margin: 0; }

/* Forms */
.form-group { margin-bottom: var(--space-4); }
label, legend {
  display: block;
  font-weight: 600;
  margin-bottom: var(--space-1);
}
.hint {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin: var(--space-1) 0 var(--space-2);
}
input[type="text"],
input[type="email"],
input[type="number"] {
  width: 100%;
  min-height: 44px;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 1rem;
}
fieldset {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-3);
  margin: 0 0 var(--space-4);
}
.radio-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-2);
}
.radio-row label {
  font-weight: 400;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 44px;
}
input[type="radio"], input[type="checkbox"] {
  width: 20px; height: 20px;
}
.field-error {
  color: var(--color-review);
  font-size: 0.9rem;
  margin-top: var(--space-1);
  font-weight: 600;
}
input[aria-invalid="true"] {
  border-color: var(--color-review);
  border-width: 2px;
}
.form-row {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.form-row input { flex: 1 1 220px; }
.form-message { min-height: 1.5em; font-weight: 600; }
.form-message-error { color: var(--color-review); }
.form-message-success { color: var(--color-safe); }
.form-message-info { color: var(--color-text-muted); }

details.why-this {
  margin-top: var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-2) var(--space-3);
  background: var(--color-bg-alt);
}
details.why-this summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--color-primary);
  min-height: 44px;
  display: flex;
  align-items: center;
}
details.why-this .why-body { padding-top: var(--space-2); font-size: 0.95rem; }
details.why-this .source-line { color: var(--color-text-muted); font-size: 0.85rem; }

/* Status badges — icon + text, never color alone */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius);
  font-weight: 700;
  border: 2px solid transparent;
}
.status-badge .status-icon { font-size: 1.1rem; }
.status-safe { background: var(--color-safe-bg); color: var(--color-safe); border-color: var(--color-safe); }
.status-watch { background: var(--color-watch-bg); color: var(--color-watch); border-color: var(--color-watch); }
.status-near { background: var(--color-near-bg); color: var(--color-near); border-color: var(--color-near); }
.status-review { background: var(--color-review-bg); color: var(--color-review); border-color: var(--color-review); }

.progress {
  height: 12px;
  border-radius: 6px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  overflow: hidden;
  margin: var(--space-2) 0;
}
.progress > span {
  display: block;
  height: 100%;
  background: var(--color-primary);
}

.result-block {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-4);
  margin-bottom: var(--space-3);
  background: var(--color-bg-card);
}
.result-block h3 { margin-top: 0; }
.result-figure {
  font-size: 1.5rem;
  font-weight: 700;
}
dl.result-list { margin: var(--space-2) 0; }
dl.result-list div { display: flex; justify-content: space-between; gap: var(--space-3); padding: var(--space-1) 0; border-bottom: 1px dashed var(--color-border); }
dl.result-list dt { color: var(--color-text-muted); }
dl.result-list dd { margin: 0; font-weight: 600; }

table {
  width: 100%;
  border-collapse: collapse;
  margin-block: var(--space-3);
}
caption { text-align: left; font-weight: 600; margin-bottom: var(--space-2); }
th, td {
  border: 1px solid var(--color-border);
  padding: var(--space-2) var(--space-3);
  text-align: left;
}
th { background: var(--color-bg-alt); }
.table-scroll { overflow-x: auto; }

.faq-item { border-bottom: 1px solid var(--color-border); padding-block: var(--space-3); }
.faq-item:last-child { border-bottom: none; }

.tag-unconfirmed {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-watch);
  background: var(--color-watch-bg);
  border: 1px solid var(--color-watch);
  border-radius: 4px;
  padding: 0.1rem 0.4rem;
  margin-left: var(--space-1);
}

.breadcrumbs {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}
.breadcrumbs a { color: var(--color-text-muted); }

.related-links { padding-left: 1.1rem; }
.related-links li { margin-bottom: var(--space-1); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-alt);
  padding-block: var(--space-4);
  margin-top: var(--space-5);
  font-size: 0.9rem;
  color: var(--color-text-muted);
}
.footer-disclaimer { max-width: 70ch; margin-bottom: var(--space-3); }
.footer-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-3);
}
.footer-nav a { color: var(--color-text-muted); }

.platform-banner {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-primary-tint);
  padding: var(--space-3);
  margin-bottom: var(--space-4);
  font-weight: 600;
}

/* Utility */
.text-muted { color: var(--color-text-muted); }
.mt-0 { margin-top: 0; }
.center { text-align: center; }
.stack > * + * { margin-top: var(--space-3); }