/* Kuyayos — front page styles
 * No @import, no external fonts, no url() to external origins.
 * CSP: style-src 'self'. No inline styles in markup.
 */

:root {
  --primary: #1E3A8A;
  --primary-700: #1C3378;
  --primary-900: #152963;
  --accent: #F59E0B;
  --accent-700: #D98A07;
  --slate-900: #0F172A;
  --slate-800: #1E293B;
  --slate-700: #334155;
  --slate-500: #64748B;
  --slate-300: #CBD5E1;
  --slate-200: #E2E8F0;
  --slate-100: #F1F5F9;
  --bg: #F9FAFB;
  --bg-alt: #FFFFFF;
  --radius: 0.75rem;
  --radius-sm: 0.5rem;
  --radius-lg: 1rem;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
  --focus: 3px solid var(--accent);
  --focus-offset: 3px;
  --max: 1200px;
  --max-narrow: 760px;
  --font-system: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
}

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

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-system);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--slate-800);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  color: var(--slate-900);
  line-height: 1.2;
  margin: 0 0 0.5rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2rem, 4vw + 1rem, 3.25rem); }
h2 { font-size: clamp(1.5rem, 2vw + 1rem, 2.25rem); }
h3 { font-size: 1.125rem; }

p {
  margin: 0 0 1rem;
}

a {
  color: var(--primary);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

a:hover {
  color: var(--primary-900);
}

:focus-visible {
  outline: var(--focus);
  outline-offset: var(--focus-offset);
  border-radius: 4px;
}

img, svg {
  max-width: 100%;
  height: auto;
  display: block;
}

ul, ol {
  padding: 0;
  margin: 0;
  list-style: none;
}

/* Skip link ------------------------------------------------- */

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  background: var(--primary);
  color: #FFFFFF;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-decoration: none;
  z-index: 100;
  transition: top 0.15s ease;
}

.skip-link:focus,
.skip-link:focus-visible {
  top: 1rem;
  outline: var(--focus);
  outline-offset: 2px;
}

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

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.container--narrow {
  max-width: var(--max-narrow);
}

.section {
  padding: 4rem 0;
}

.section--muted {
  background: var(--bg-alt);
  border-top: 1px solid var(--slate-200);
  border-bottom: 1px solid var(--slate-200);
}

.section__lede {
  max-width: 60ch;
  color: var(--slate-700);
  font-size: 1.0625rem;
  margin-bottom: 2rem;
}

.eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary);
  background: rgba(30, 58, 138, 0.08);
  padding: 0.375rem 0.75rem;
  border-radius: 999px;
  margin: 0 0 1rem;
}

.muted {
  color: var(--slate-500);
}

/* Buttons --------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  border: 2px solid transparent;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
  line-height: 1.2;
}

.btn--small {
  padding: 0.5rem 0.9rem;
  font-size: 0.9375rem;
}

.btn--large {
  padding: 0.9rem 1.5rem;
  font-size: 1.0625rem;
}

.btn--primary {
  background: var(--primary);
  color: #FFFFFF;
}

.btn--primary:hover {
  background: var(--primary-900);
  color: #FFFFFF;
}

.btn--ghost {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}

.btn--ghost:hover {
  background: var(--primary);
  color: #FFFFFF;
}

.btn--accent {
  background: var(--accent);
  color: var(--slate-900);
}

.btn--accent:hover {
  background: var(--accent-700);
}

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

.site-header {
  background: var(--bg-alt);
  border-bottom: 1px solid var(--slate-200);
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--slate-900);
  font-weight: 700;
  font-size: 1.125rem;
}

.brand__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.brand__word {
  letter-spacing: -0.01em;
}

/* Nav toggle (checkbox hack, no JS) */

.nav-toggle {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.nav-toggle-label {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 9px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 1px solid var(--slate-200);
  background: var(--bg-alt);
}

.nav-toggle-bar {
  display: block;
  height: 2px;
  background: var(--slate-900);
  border-radius: 2px;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.nav-toggle:focus-visible + .nav-toggle-label {
  outline: var(--focus);
  outline-offset: 2px;
}

.site-nav {
  display: none;
  position: absolute;
  top: 64px;
  right: 0;
  left: 0;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--slate-200);
  padding: 1rem 1.25rem 1.25rem;
  box-shadow: var(--shadow);
}

.nav-toggle:checked ~ .site-nav {
  display: block;
}

.site-nav__list {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.site-nav__list a {
  display: block;
  padding: 0.75rem 0.5rem;
  color: var(--slate-800);
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-weight: 500;
}

.site-nav__list a:hover {
  background: var(--slate-100);
  color: var(--primary);
}

.site-nav__list .btn {
  margin-top: 0.5rem;
}

@media (min-width: 768px) {
  .nav-toggle-label {
    display: none;
  }
  .site-nav {
    display: block;
    position: static;
    padding: 0;
    border: 0;
    box-shadow: none;
    background: transparent;
  }
  .site-nav__list {
    flex-direction: row;
    gap: 0.25rem;
    align-items: center;
  }
  .site-nav__list a {
    padding: 0.5rem 0.85rem;
  }
  .site-nav__list .btn {
    margin-top: 0;
  }
}

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

.hero {
  padding: 3rem 0 4rem;
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(30, 58, 138, 0.10), transparent 60%),
    radial-gradient(900px 400px at 110% 0%, rgba(245, 158, 11, 0.12), transparent 60%);
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}

.hero__copy h1 {
  margin-bottom: 1rem;
}

.lede {
  font-size: 1.125rem;
  color: var(--slate-700);
  max-width: 56ch;
}

.hero__cta {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin: 1.25rem 0 1.25rem;
}

.hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.hero__chips li {
  background: var(--bg-alt);
  border: 1px solid var(--slate-200);
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  font-size: 0.875rem;
  color: var(--slate-700);
}

.hero__art {
  max-width: 480px;
  justify-self: center;
  width: 100%;
}

.hero__svg {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

@media (min-width: 1024px) {
  .hero {
    padding: 5rem 0 6rem;
  }
  .hero__grid {
    grid-template-columns: 1.1fr 1fr;
    gap: 3rem;
  }
  .hero__art {
    justify-self: end;
  }
}

/* How it works ---------------------------------------------- */

.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  counter-reset: step;
}

.step {
  background: var(--bg-alt);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--primary);
  color: #FFFFFF;
  border-radius: 50%;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.step__title {
  margin-bottom: 0.5rem;
}

@media (min-width: 768px) {
  .steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }
}

/* Trades ---------------------------------------------------- */

.trades {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.trade-card {
  background: var(--bg);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius);
  padding: 1.25rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.trade-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: var(--slate-300);
}

.trade-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(30, 58, 138, 0.08);
  color: var(--primary);
  margin-bottom: 0.75rem;
}

.trade-card h3 {
  margin-bottom: 0.35rem;
}

.trade-card p {
  color: var(--slate-700);
  font-size: 0.9375rem;
  margin: 0;
}

/* Why ------------------------------------------------------- */

.why {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.why__item {
  background: var(--bg-alt);
  border: 1px solid var(--slate-200);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.25rem 1.25rem 1.25rem 1.25rem;
}

.why__item h3 {
  margin-bottom: 0.35rem;
  color: var(--primary);
}

.why__item p {
  color: var(--slate-700);
  margin: 0;
}

@media (min-width: 768px) {
  .why {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }
}

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

.faq {
  background: var(--bg-alt);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  overflow: hidden;
}

.faq summary {
  list-style: none;
  cursor: pointer;
  padding: 1rem 1.25rem;
  font-weight: 600;
  color: var(--slate-900);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "";
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--slate-500);
  border-bottom: 2px solid var(--slate-500);
  transform: rotate(45deg);
  transition: transform 0.15s ease;
  flex-shrink: 0;
}

.faq[open] summary::after {
  transform: rotate(-135deg);
}

.faq summary:hover {
  background: var(--slate-100);
}

.faq__body {
  padding: 0 1.25rem 1.25rem;
  color: var(--slate-700);
}

.faq__body p {
  margin: 0;
}

/* CTA repeat ------------------------------------------------ */

.cta-repeat {
  background: var(--primary);
  color: #FFFFFF;
}

.cta-repeat__inner {
  text-align: center;
}

.cta-repeat h2 {
  color: #FFFFFF;
  margin-bottom: 0.5rem;
}

.cta-repeat p {
  color: rgba(255, 255, 255, 0.88);
  font-size: 1.0625rem;
}

.cta-repeat .btn--primary {
  background: var(--accent);
  color: var(--slate-900);
  border-color: var(--accent);
}

.cta-repeat .btn--primary:hover {
  background: var(--accent-700);
  border-color: var(--accent-700);
  color: var(--slate-900);
}

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

.site-footer {
  background: var(--slate-900);
  color: var(--slate-200);
  padding: 3rem 0 1.5rem;
  margin-top: 0;
}

.site-footer a {
  color: var(--slate-200);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.site-footer .brand,
.site-footer .brand__word {
  color: #FFFFFF;
}

.site-footer .muted {
  color: var(--slate-300);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .site-footer__grid {
    grid-template-columns: 1.5fr 1.5fr 1fr 1fr;
    gap: 2.5rem;
  }
}

.nap p {
  margin: 0 0 0.25rem;
  font-style: normal;
}

.footer-nav__title {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--slate-300);
  margin: 0 0 0.75rem;
}

.footer-nav ul,
.footer-social ul {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.site-footer__base {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.site-footer__base p {
  margin: 0;
}

/* High-contrast helpers ------------------------------------- */

::selection {
  background: var(--accent);
  color: var(--slate-900);
}

@media (prefers-contrast: more) {
  .trade-card,
  .step,
  .why__item,
  .faq {
    border-color: var(--slate-700);
  }
}