:root {
  --color-background: #020202;
  --color-surface: #211f24;
  --color-primary: #5a5df0;
  --color-text: #fafafa;
  --color-income: #34d399;
  --color-expense: #f87171;
  --color-muted: rgba(250, 250, 250, 0.65);
  --content-width: min(1100px, 100% - 3rem);
  --font-heading: "Space Grotesk", "Segoe UI", sans-serif;
  --font-body: "Inter", "Segoe UI", sans-serif;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  font-family: var(--font-body);
  background: radial-gradient(circle at top right, rgba(90, 93, 240, 0.25), transparent 40%),
    radial-gradient(circle at bottom left, rgba(52, 211, 153, 0.2), transparent 45%),
    var(--color-background);
  color: var(--color-text);
  display: flex;
  flex-direction: column;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease, text-shadow 0.2s ease;
}

a:hover,
a:focus {
  text-shadow: 0 0 8px rgba(90, 93, 240, 0.8);
}

a:focus-visible {
  outline: 2px dashed var(--color-primary);
  outline-offset: 4px;
}

header {
  background: linear-gradient(135deg, rgba(33, 31, 36, 0.9), rgba(90, 93, 240, 0.35));
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(90, 93, 240, 0.35);
  position: sticky;
  top: 0;
  z-index: 10;
}

.navbar {
  margin: 0 auto;
  width: var(--content-width);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  gap: 1.25rem;
}

.branding {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.branding .logo {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-weight: 600;
  font-family: var(--font-heading);
  letter-spacing: 0.02em;
  background: linear-gradient(135deg, rgba(90, 93, 240, 0.95), rgba(90, 93, 240, 0.2));
  box-shadow: 0 0 18px rgba(90, 93, 240, 0.55);
}

.branding strong {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.nav-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.nav-links a {
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  border: 1px solid transparent;
  color: var(--color-text);
  font-size: 0.95rem;
}

.nav-links a:hover,
.nav-links a:focus,
.nav-links a[aria-current="page"] {
  border-color: rgba(90, 93, 240, 0.6);
  background: rgba(90, 93, 240, 0.15);
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.navbar-actions .nav-links {
  justify-content: flex-end;
}

.language-selector {
  appearance: none;
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  min-width: 170px;
  padding: 0.5rem 2.6rem 0.5rem 1rem;
  font-size: 0.95rem;
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: rgba(33, 31, 36, 0.85);
  background-image:
    linear-gradient(135deg, rgba(90, 93, 240, 0.35), rgba(90, 93, 240, 0.08)),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3E%3Cpath stroke='%23fafafa' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3E%3C/svg%3E");
  background-position: left top, right 0.9rem center;
  background-repeat: no-repeat;
  background-size: auto, 0.65rem;
  border: 1px solid rgba(90, 93, 240, 0.45);
  border-radius: 999px;
  box-shadow: 0 12px 26px rgba(4, 4, 16, 0.45);
  backdrop-filter: blur(16px);
  cursor: pointer;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.language-selector:focus,
.language-selector:focus-visible {
  outline: none;
  border-color: rgba(90, 93, 240, 0.9);
  box-shadow: 0 0 0 3px rgba(90, 93, 240, 0.28), 0 12px 28px rgba(4, 4, 16, 0.55);
}

.language-selector:hover {
  border-color: rgba(90, 93, 240, 0.78);
  box-shadow: 0 10px 24px rgba(6, 6, 20, 0.55);
  transform: translateY(-1px);
}

.language-selector option {
  color: #111;
  font-family: var(--font-body);
}

.language-selector::-ms-expand {
  display: none;
}

main {
  flex: 1;
  width: 100%;
}

.wrapper {
  width: var(--content-width);
  margin: 0 auto;
  padding: clamp(2rem, 3vw, 3rem) 0 4rem;
}

.docs-layout {
  width: min(1280px, 100% - 3rem);
  margin: 0 auto;
  padding: clamp(2rem, 3vw, 3rem) 0 4rem;
  display: grid;
  grid-template-columns: minmax(220px, 260px) minmax(0, 1fr);
  gap: clamp(1.5rem, 3vw, 3rem);
}

.docs-sidebar {
  position: sticky;
  top: 5.5rem;
  align-self: start;
}

.docs-sidebar-inner {
  background: rgba(33, 31, 36, 0.6);
  border-radius: 18px;
  border: 1px solid rgba(90, 93, 240, 0.35);
  padding: 1.5rem;
  display: grid;
  gap: 1.75rem;
  box-shadow: 0 20px 40px rgba(2, 2, 2, 0.65);
  max-height: calc(100vh - 6rem);
  overflow: auto;
}

.docs-nav {
  display: grid;
  gap: 1.75rem;
}

.docs-nav-group {
  display: grid;
  gap: 0.75rem;
}

.docs-nav-heading {
  margin: 0;
  font-family: var(--font-heading);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.75rem;
  color: rgba(250, 250, 250, 0.55);
}

.docs-nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.35rem;
}

.docs-nav-list a {
  display: block;
  padding: 0.45rem 0.75rem;
  border-radius: 0.75rem;
  color: rgba(250, 250, 250, 0.75);
  border: 1px solid transparent;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, text-shadow 0.2s ease;
}

.docs-nav-list a:hover,
.docs-nav-list a:focus {
  color: var(--color-text);
  border-color: rgba(90, 93, 240, 0.45);
  background: rgba(90, 93, 240, 0.12);
  text-shadow: 0 0 12px rgba(90, 93, 240, 0.45);
}

.docs-nav-list a[aria-current="page"] {
  color: var(--color-text);
  border-color: rgba(90, 93, 240, 0.75);
  background: rgba(90, 93, 240, 0.2);
  text-shadow: 0 0 14px rgba(90, 93, 240, 0.6);
}

.docs-content {
  min-width: 0;
}

.hero {
  text-align: center;
  padding: 4rem 0 2.5rem;
  display: grid;
  gap: 1.1rem;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.25rem, 5vw, 3.4rem);
  margin: 0;
  letter-spacing: 0.02em;
  text-shadow: 0 0 18px rgba(90, 93, 240, 0.45);
}

.hero p {
  margin: 0 auto;
  max-width: 640px;
  color: var(--color-muted);
  font-size: 1.05rem;
}

.hero .cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.8rem 1.6rem;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(90, 93, 240, 0.9), rgba(90, 93, 240, 0.55));
  color: var(--color-text);
  font-weight: 600;
  box-shadow: 0 0 22px rgba(90, 93, 240, 0.35);
}

.hero .cta:hover {
  box-shadow: 0 0 28px rgba(90, 93, 240, 0.55);
}

.section-title {
  font-family: var(--font-heading);
  font-size: 1.85rem;
  margin: 3rem 0 1rem;
  text-shadow: 0 0 12px rgba(90, 93, 240, 0.35);
}

.section-title span {
  color: var(--color-primary);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
}

.card {
  background: rgba(33, 31, 36, 0.9);
  border-radius: 16px;
  padding: 1.75rem;
  display: grid;
  gap: 1rem;
  border: 1px solid rgba(90, 93, 240, 0.35);
  box-shadow: 0 25px 45px rgba(2, 2, 2, 0.65);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 30px 55px rgba(90, 93, 240, 0.25);
}

.card h3 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 1.3rem;
}

.card p {
  margin: 0;
  color: var(--color-muted);
}

.card .meta {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(250, 250, 250, 0.55);
}

.callouts {
  display: grid;
  gap: 1rem;
  margin: 2rem 0 3rem;
}

.callout {
  border-radius: 14px;
  padding: 1.25rem 1.5rem;
  background: rgba(33, 31, 36, 0.7);
  border: 1px solid rgba(90, 93, 240, 0.35);
  display: grid;
  gap: 0.4rem;
  position: relative;
  overflow: hidden;
}

.callout::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, rgba(90, 93, 240, 0.4), transparent 60%);
  opacity: 0.6;
  pointer-events: none;
}

.callout strong {
  font-family: var(--font-heading);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.9rem;
}

.callout p {
  margin: 0;
  color: var(--color-muted);
}

.callout.hint {
  border-left: 4px solid var(--color-income);
}

.callout.warning {
  border-left: 4px solid var(--color-expense);
}

.step-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.step-card {
  position: relative;
  background: rgba(33, 31, 36, 0.75);
  border-radius: 18px;
  border: 1px solid rgba(90, 93, 240, 0.35);
  padding: 1.5rem;
  display: grid;
  gap: 0.75rem;
  box-shadow: 0 20px 45px rgba(2, 2, 2, 0.65);
}

.step-card .step-number {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  font-family: var(--font-heading);
  font-weight: 600;
  letter-spacing: 0.04em;
  background: rgba(90, 93, 240, 0.35);
  color: var(--color-text);
}

.step-card h3 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 1.2rem;
}

.step-card p {
  margin: 0;
  color: var(--color-muted);
}

.stepper {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: grid;
  gap: 1.2rem;
  counter-reset: transaction-step;
}

.stepper li {
  position: relative;
  background: rgba(33, 31, 36, 0.75);
  border-radius: 18px;
  border: 1px solid rgba(90, 93, 240, 0.35);
  padding: 1.5rem 1.5rem 1.5rem 3.75rem;
  box-shadow: 0 20px 45px rgba(2, 2, 2, 0.65);
}

.stepper li::before {
  counter-increment: transaction-step;
  content: counter(transaction-step);
  position: absolute;
  left: 1.4rem;
  top: 1.4rem;
  width: 32px;
  height: 32px;
  border-radius: 999px;
  background: rgba(90, 93, 240, 0.35);
  display: grid;
  place-items: center;
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-text);
}

.stepper h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-heading);
}

.stepper p {
  margin: 0;
  color: var(--color-muted);
}

.stepper ul {
  margin-top: 0.75rem;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.detail-block {
  background: rgba(33, 31, 36, 0.75);
  border-radius: 18px;
  border: 1px solid rgba(90, 93, 240, 0.35);
  padding: 1.5rem;
  display: grid;
  gap: 0.75rem;
  box-shadow: 0 20px 45px rgba(2, 2, 2, 0.65);
}

.detail-block h3 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 1.15rem;
}

.detail-block p {
  margin: 0;
  color: var(--color-muted);
}

.note {
  color: rgba(250, 250, 250, 0.75);
  font-size: 0.95rem;
}

.split-layout {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  align-items: start;
  margin-top: 1.5rem;
}

.prose {
  display: grid;
  gap: 1.25rem;
  color: var(--color-muted);
  line-height: 1.7;
}

.prose h2,
.prose h3 {
  font-family: var(--font-heading);
  color: var(--color-text);
  margin: 0;
}

.prose ul,
.prose ol {
  margin: 0;
  padding-left: 1.25rem;
  display: grid;
  gap: 0.6rem;
}

.prose li::marker {
  color: rgba(90, 93, 240, 0.9);
}

.screenshot-wall {
  display: grid;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}

.screenshot-frame {
  position: relative;
  padding-top: 60%;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(90, 93, 240, 0.45), rgba(2, 2, 2, 0.95));
  border: 1px solid rgba(90, 93, 240, 0.5);
  box-shadow: inset 0 0 45px rgba(90, 93, 240, 0.25), 0 25px 45px rgba(2, 2, 2, 0.8);
  overflow: hidden;
}

.screenshot-frame span {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--font-heading);
  color: rgba(250, 250, 250, 0.7);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  background: rgba(90, 93, 240, 0.22);
  color: var(--color-text);
  border: 1px solid rgba(90, 93, 240, 0.4);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.85rem;
  color: rgba(250, 250, 250, 0.55);
  margin-bottom: 2rem;
}

.breadcrumb a {
  color: rgba(250, 250, 250, 0.75);
}

.breadcrumb span {
  color: rgba(250, 250, 250, 0.35);
}

.sidebar {
  background: rgba(33, 31, 36, 0.55);
  border-radius: 18px;
  border: 1px solid rgba(90, 93, 240, 0.35);
  padding: 1.5rem;
  box-shadow: 0 20px 40px rgba(2, 2, 2, 0.65);
  display: grid;
  gap: 1rem;
}

.sidebar h3 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 1.1rem;
}

.sidebar nav {
  display: grid;
  gap: 0.6rem;
}

.sidebar a {
  color: rgba(250, 250, 250, 0.75);
}

.sidebar a:hover {
  color: var(--color-text);
}

footer {
  border-top: 1px solid rgba(90, 93, 240, 0.25);
  background: rgba(2, 2, 2, 0.85);
  padding: 2rem 0;
  margin-top: auto;
}

footer .footer-inner {
  width: var(--content-width);
  margin: 0 auto;
  display: grid;
  gap: 0.5rem;
  color: rgba(250, 250, 250, 0.55);
  font-size: 0.85rem;
}

@media (max-width: 1024px) {
  .docs-layout {
    width: min(100%, 100% - 2rem);
    padding: 2rem 0 3rem;
    grid-template-columns: 1fr;
  }

  .docs-sidebar {
    position: static;
  }

  .docs-sidebar-inner {
    max-height: none;
    overflow: visible;
  }
}

@media (max-width: 768px) {
  .navbar {
    flex-direction: column;
    gap: 1rem;
  }

  .hero {
    padding-top: 3rem;
  }

  .docs-nav {
    gap: 1.25rem;
  }

  .docs-nav-list {
    gap: 0.5rem;
  }

  .docs-nav-list a {
    padding: 0.5rem 0.85rem;
  }

  .section-title {
    margin-top: 2.5rem;
  }
}