/* ===========================================================
   MTCJEN20 ambassador hub — single stylesheet, no dependencies.
   No web fonts and no tracking scripts: every external request
   is a latency and privacy cost a one-page site can't justify.
   =========================================================== */

:root {
  --ink:        #10161f;
  --ink-soft:   #3d4a5c;
  --paper:      #ffffff;
  --paper-alt:  #f5f7fa;
  --rule:       #dfe4ea;
  --accent:     #0b6f68;
  --accent-dk:  #08514c;
  --notice-bg:  #fff4e0;
  --notice-ink: #6b4200;
  --notice-rule:#e8c98a;

  --wrap: 46rem;
  --radius: 10px;
}

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

/* ---------- Accessibility helpers ---------- */

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 0.65rem 1rem;
  background: var(--ink);
  color: var(--paper);
  font-weight: 600;
  text-decoration: none;
}
.skip-link:focus { left: 0; }

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

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

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
  border-radius: 3px;
}

/* ---------- FTC disclosure bar ---------- */

.disclosure-bar {
  background: var(--notice-bg);
  color: var(--notice-ink);
  border-bottom: 2px solid var(--notice-rule);
  padding: 0.85rem 1.15rem;
}
.disclosure-bar p {
  max-width: var(--wrap);
  margin: 0 auto;
  font-size: 0.9375rem;
  line-height: 1.5;
}
.disclosure-bar strong { color: var(--notice-ink); }

/* ---------- Header ---------- */

.site-header {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 1rem 1.15rem 0;
}

.ambassador-badge {
  display: inline-block;
  margin: 0 0 0.75rem;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: var(--paper-alt);
  color: var(--ink-soft);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.1rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.9375rem;
}
.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.site-nav a:hover {
  color: var(--accent-dk);
  border-bottom-color: var(--accent-dk);
}

/* ---------- Layout ---------- */

main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 1.15rem;
}

main > section {
  padding: 2.1rem 0;
  border-top: 1px solid var(--rule);
}
main > section:first-of-type { border-top: 0; }

h1, h2, h3 {
  line-height: 1.22;
  letter-spacing: -0.015em;
  margin: 0 0 0.6rem;
}

h1 { font-size: 1.85rem; }
h2 { font-size: 1.35rem; }
h3 { font-size: 1.0625rem; }

p { margin: 0 0 1rem; }
p:last-child { margin-bottom: 0; }

/* ---------- Hero ---------- */

.hero { padding-top: 1.6rem; }

.hero__eyebrow {
  margin: 0 0 0.4rem;
  color: var(--accent);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.hero__code {
  white-space: nowrap;
}

.hero__lede {
  font-size: 1.1875rem;
}

/* ---------- Quick facts ---------- */

.quick-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.6rem;
  margin: 1.2rem 0 1.4rem;
  padding: 0;
}
.quick-facts > div {
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--rule);
  border-radius: 8px;
  background: var(--paper-alt);
}
.quick-facts dt {
  margin: 0 0 0.15rem;
  color: var(--ink-soft);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.quick-facts dd {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.35;
}

@media (min-width: 40em) {
  .quick-facts { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

.code-status {
  margin: 1rem 0 0;
  padding: 0.7rem 0.9rem;
  border-left: 3px solid var(--accent);
  background: var(--paper-alt);
  font-size: 0.9rem;
  color: var(--ink-soft);
  line-height: 1.5;
}
.code-status strong { color: var(--ink); }

/* ---------- Code chip ---------- */

.code-chip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.7rem 0.9rem;
  margin: 1.35rem 0 0.4rem;
  padding: 0.95rem 1.05rem;
  border: 2px dashed var(--accent);
  border-radius: var(--radius);
  background: var(--paper-alt);
}

.code-chip__label {
  flex: 1 1 100%;
  color: var(--ink-soft);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.code-chip__value {
  flex: 1 1 auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--ink);
}

.copy-btn {
  flex: 0 0 auto;
  padding: 0.6rem 1rem;
  border: 2px solid var(--accent-dk);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--accent-dk);
  font: inherit;
  font-size: 0.9375rem;
  font-weight: 700;
  cursor: pointer;
}
.copy-btn:hover { background: var(--accent-dk); color: var(--paper); }
.copy-btn[data-copied="true"] {
  background: var(--accent-dk);
  color: var(--paper);
}

.copy-status {
  min-height: 1.3rem;
  margin: 0 0 0.6rem;
  color: var(--accent-dk);
  font-size: 0.875rem;
  font-weight: 600;
}

/* ---------- Call to action ---------- */

.cta-row { margin: 1.2rem 0 0.7rem; }

.cta-button {
  display: inline-block;
  padding: 0.8rem 1.35rem;
  border-radius: var(--radius);
  background: var(--accent-dk);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
}
.cta-button:hover {
  background: var(--ink);
  color: #fff;
}

/* ---------- Lists ---------- */

.steps {
  margin: 0 0 1rem;
  padding-left: 1.35rem;
}
.steps li { margin-bottom: 0.75rem; }
.steps li:last-child { margin-bottom: 0; }

.plain-list {
  margin: 0 0 1.25rem;
  padding-left: 1.35rem;
}
.plain-list li { margin-bottom: 0.4rem; }

/* ---------- Video ---------- */

.video-figure {
  margin: 1.35rem 0 0;
  padding: 0;
}
.promo-video {
  display: block;
  width: 100%;
  max-width: 360px;
  height: auto;
  margin: 0 0 0.7rem;
  border-radius: var(--radius);
  background: #000;
}
.video-figure figcaption { max-width: 34rem; }

/* ---------- Product list ---------- */

.product-list {
  margin: 0 0 1.25rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.4rem;
}
.product-list li {
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
  border-radius: 6px;
  background: var(--paper-alt);
  font-size: 1rem;
}
.product-list strong { color: var(--ink); }

/* ---------- FAQ ---------- */

.faq-item {
  padding: 0.15rem 0 1.15rem;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 1.15rem;
}
.faq-item:last-child {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}
.faq-item h3 { color: var(--ink); }
.faq-item p { margin-bottom: 0; color: var(--ink-soft); }
.faq-item p strong { color: var(--ink); }

/* ---------- About / misc ---------- */

.about p { color: var(--ink-soft); }
.about strong { color: var(--ink); }

/* Photo sits above the text on narrow screens; floats beside it when
   there's room. Clearfix keeps the section height honest. */
.about::after {
  content: "";
  display: block;
  clear: both;
}
.about-photo { margin: 0 0 1.1rem; }
.about-photo img {
  display: block;
  width: 100%;
  max-width: 260px;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--rule);
}

@media (min-width: 40em) {
  .about-photo {
    float: left;
    width: 200px;
    margin: 0 1.5rem 0.9rem 0;
  }
  .about-photo img { max-width: 200px; }
}

.fineprint {
  color: var(--ink-soft);
  font-size: 0.875rem;
  line-height: 1.55;
}

/* ---------- Footer ---------- */

.site-footer {
  margin-top: 1.5rem;
  padding: 1.6rem 1.15rem 2.4rem;
  border-top: 1px solid var(--rule);
  background: var(--paper-alt);
}
.site-footer > p {
  max-width: var(--wrap);
  margin: 0 auto 0.8rem;
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--ink-soft);
}
.site-footer > p:last-child { margin-bottom: 0; }
.site-footer > p:first-of-type {
  color: var(--notice-ink);
  background: var(--notice-bg);
  border: 1px solid var(--notice-rule);
  border-radius: var(--radius);
  padding: 0.8rem 0.95rem;
}

/* ---------- Wider screens ---------- */

@media (min-width: 40em) {
  body { font-size: 1.125rem; }
  h1 { font-size: 2.4rem; }
  h2 { font-size: 1.55rem; }
  .hero__lede { font-size: 1.3125rem; }
  main > section { padding: 2.75rem 0; }
  .code-chip { gap: 0.9rem 1.2rem; }
  .code-chip__label { flex: 0 0 auto; }
  .code-chip__value { font-size: 1.7rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}