/* Guaraní Currency Converter: web tokens aligned with Ledger / DESIGN.md */

:root {
  color-scheme: light dark;

  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

  --surface: #f8faf9;
  --surface-low: #f2f4f3;
  --surface-raised: #ffffff;
  --primary: #00261b;
  --primary-container: #cee9da;
  --on-surface: #191c1c;
  --on-surface-variant: #5c5f5e;
  --on-primary-fixed: #0f2920;
  --gold: #e9c176;
  --outline-ghost: rgba(25, 28, 28, 0.15);

  --radius-lg: 26px;
  --radius-md: 12px;
  --shadow-float: 0 12px 32px rgba(25, 28, 28, 0.06);

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4rem;
  --content-max: 1120px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --surface: #0d1210;
    --surface-low: #141a18;
    --surface-raised: #1a211e;
    --primary: #1a6b54;
    --primary-container: #244a3a;
    --on-surface: #e8ece9;
    --on-surface-variant: #a8b0ac;
    --on-primary-fixed: #b8e6d4;
    --gold: #e9c176;
    --outline-ghost: rgba(232, 236, 233, 0.12);
    --shadow-float: 0 12px 40px rgba(0, 0, 0, 0.35);
  }
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--on-surface);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--primary);
  text-decoration-color: rgba(0, 38, 27, 0.35);
  text-underline-offset: 3px;
  transition: color 0.15s ease, text-decoration-color 0.15s ease;
}

a:hover {
  color: var(--on-primary-fixed);
  text-decoration-color: rgba(15, 41, 32, 0.55);
}

@media (prefers-color-scheme: dark) {
  a {
    color: var(--on-primary-fixed);
    text-decoration-color: rgba(184, 230, 212, 0.35);
  }
  a:hover {
    text-decoration-color: rgba(184, 230, 212, 0.55);
  }
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--outline-ghost);
}

.site-header__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: var(--space-2) max(var(--space-3), env(safe-area-inset-right, 0px)) var(--space-2)
    max(var(--space-3), env(safe-area-inset-left, 0px));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--on-surface);
}

.brand__mark {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: block;
}

.brand:hover {
  color: var(--on-surface);
  text-decoration: none;
}

.brand__name {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.brand__tag {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav__links {
  display: flex;
  gap: var(--space-3);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--on-surface-variant);
  text-decoration: none;
}

.nav__links a:hover {
  color: var(--on-surface);
}

.nav__toggle {
  display: none;
  background: transparent;
  border: none;
  padding: var(--space-1);
  cursor: pointer;
  color: var(--on-surface);
}

.nav__toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  margin: 5px 0;
  border-radius: 1px;
}

@media (max-width: 768px) {
  .nav__toggle {
    display: block;
  }

  /* Anchor to `.site-header` (sticky), not `.nav` — otherwise left/right span only the hamburger width. */
  .nav__links {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    z-index: 110;
    flex-direction: column;
    padding: var(--space-2) max(var(--space-3), env(safe-area-inset-right, 0px)) var(--space-2)
      max(var(--space-3), env(safe-area-inset-left, 0px));
    background: var(--surface-low);
    border-bottom: 1px solid var(--outline-ghost);
    display: none;
  }

  .nav__links.is-open {
    display: flex;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.65rem 1.25rem;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  line-height: 1.2;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
}

.btn--primary {
  background: linear-gradient(180deg, var(--primary) 0%, color-mix(in srgb, var(--primary) 88%, black) 100%);
  color: #fff;
}

.btn--primary:hover {
  color: #fff;
  text-decoration: none;
  box-shadow: var(--shadow-float);
  transform: translateY(-1px);
}

.btn--secondary {
  background: var(--surface-raised);
  color: var(--on-primary-fixed);
  border: 1px solid var(--outline-ghost);
}

.btn--secondary:hover {
  background: var(--surface-low);
  text-decoration: none;
}

main {
  overflow-x: hidden;
}

.wrap {
  max-width: var(--content-max);
  margin: 0 auto;
  padding-left: max(var(--space-3), env(safe-area-inset-left, 0px));
  padding-right: max(var(--space-3), env(safe-area-inset-right, 0px));
}

/* One text column for legal/support: hero + prose share the same measure and left edge. */
.wrap--document .page-hero,
.wrap--document .prose {
  max-width: 65ch;
  width: 100%;
  margin-inline-start: 0;
  margin-inline-end: auto;
  box-sizing: border-box;
}

/* Vertical-only: horizontal insets come from `.wrap` inside (do not merge `.hero` + `.wrap` on one node — it zeroed side padding). */
.hero {
  padding-top: var(--space-6);
  padding-bottom: var(--space-5);
}

@media (max-width: 900px) {
  .hero {
    padding-top: var(--space-5);
  }
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
  align-items: center;
}

.hero__grid > * {
  min-width: 0;
}

@media (max-width: 900px) {
  .hero__copy {
    text-align: center;
  }

  .hero__grid {
    grid-template-columns: 1fr;
    align-items: stretch;
    justify-items: stretch;
  }

  .hero__shot {
    justify-self: center;
    width: 100%;
    max-width: 240px;
    margin-inline: auto;
  }

  .hero__shot img {
    max-width: 100%;
  }

  .hero__actions {
    justify-content: center;
  }
}

.hero__eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 var(--space-2);
}

.hero__title {
  margin: 0 0 var(--space-2);
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--on-primary-fixed);
}

.hero__lead {
  margin: 0 0 var(--space-3);
  font-size: 1.125rem;
  color: var(--on-surface-variant);
  max-width: 36ch;
}

@media (max-width: 900px) {
  .hero__lead {
    max-width: none;
  }
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
}

@media (max-width: 480px) {
  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero__actions .btn {
    width: 100%;
  }
}

.hero__shot {
  position: relative;
  justify-self: end;
  width: 100%;
  max-width: 280px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero__shot img {
  width: 100%;
  max-width: 280px;
  height: auto;
  margin-inline: auto;
}

.section {
  padding: var(--space-5) 0;
}

.section--tint {
  background: var(--surface-low);
  border-top: 1px solid transparent;
  border-bottom: 1px solid var(--outline-ghost);
}

.section__title {
  margin: 0 0 var(--space-1);
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--on-primary-fixed);
}

.section__intro {
  margin: 0 0 var(--space-4);
  max-width: 52ch;
  color: var(--on-surface-variant);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}

@media (max-width: 800px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }
}

.feature-card {
  padding: var(--space-3);
  background: var(--surface-raised);
  border-radius: var(--radius-lg);
  box-shadow: 0 1px 0 var(--outline-ghost);
}

.feature-card h3 {
  margin: 0 0 var(--space-1);
  font-size: 1rem;
  font-weight: 600;
  color: var(--on-primary-fixed);
}

.feature-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--on-surface-variant);
}

.shots {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  align-items: start;
}

@media (max-width: 900px) {
  .shots {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }
}

.shots__item {
  text-align: center;
}

.shots__item img {
  margin: 0 auto var(--space-2);
}

.shots__caption {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--on-surface-variant);
}

.shots--wide {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  align-items: start;
}

@media (max-width: 768px) {
  .shots--wide {
    grid-template-columns: 1fr;
  }
}


.page-hero {
  padding: var(--space-5) 0 var(--space-3);
}

.page-hero h1 {
  margin: 0 0 var(--space-2);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--on-primary-fixed);
}

.page-hero p {
  margin: 0;
  color: var(--on-surface-variant);
}

.wrap--document .page-hero p {
  max-width: none;
}

.prose {
  padding-bottom: var(--space-6);
}

.prose h2 {
  margin: var(--space-4) 0 var(--space-2);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--on-primary-fixed);
}

.prose h2:first-child {
  margin-top: 0;
}

.prose p,
.prose li {
  color: var(--on-surface-variant);
  font-size: 0.95rem;
}

.prose ul {
  padding-left: 1.25rem;
}

.prose li {
  margin-bottom: var(--space-1);
}

.prose strong {
  color: var(--on-surface);
  font-weight: 600;
}

.faq-item {
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--outline-ghost);
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-item h2 {
  margin: 0 0 var(--space-1);
  font-size: 1rem;
  font-weight: 600;
  color: var(--on-primary-fixed);
}

.faq-item p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--on-surface-variant);
}

.contact-card {
  margin-top: var(--space-4);
  padding: var(--space-3);
  background: var(--surface-raised);
  border-radius: var(--radius-lg);
  border: 1px solid var(--outline-ghost);
}

.contact-card p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--on-surface-variant);
}

.site-footer {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  padding-right: max(var(--space-3), env(safe-area-inset-right, 0px));
  padding-bottom: max(var(--space-4), env(safe-area-inset-bottom, 0px));
  padding-left: max(var(--space-3), env(safe-area-inset-left, 0px));
  background: var(--surface-low);
  border-top: 1px solid var(--outline-ghost);
}

.site-footer__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.site-footer__nav {
  display: flex;
  gap: var(--space-3);
}

.site-footer__nav a {
  font-size: 0.85rem;
  color: var(--on-surface-variant);
}

.site-footer__copy {
  font-size: 0.8rem;
  color: var(--on-surface-variant);
}

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