:root {
  color-scheme: dark;
  --bg: #060807;
  --surface: #0a0c0b;
  --ink: #eef4f0;
  --ink-soft: rgba(255, 255, 255, 0.7);
  --ink-dim: rgba(255, 255, 255, 0.45);
  --ink-faint: rgba(255, 255, 255, 0.35);
  --hairline: rgba(255, 255, 255, 0.09);
  --hairline-soft: rgba(255, 255, 255, 0.07);
  --hairline-faint: rgba(255, 255, 255, 0.05);
  --mint: #8fd9b3;
  --mint-soft: rgba(143, 217, 179, 0.08);
  --cta: linear-gradient(90deg, #0d3d24 0%, #14683c 100%);
  --cta-ink: #eafff4;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", sans-serif;
}

@keyframes kr-reveal {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes kr-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.8); }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 15px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--mint);
  text-decoration: none;
  transition: opacity 0.2s;
}

a:hover {
  opacity: 0.8;
}

code {
  font: 500 0.86em var(--mono);
  color: var(--mint);
  background: var(--mint-soft);
  border: 1px solid rgba(143, 217, 179, 0.14);
  border-radius: 4px;
  padding: 1px 5px;
  white-space: nowrap;
}

h1, h2, h3 {
  margin: 0;
  color: var(--ink);
  letter-spacing: -0.02em;
}

/* ── topbar ───────────────────────────────────── */

.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(6, 8, 7, 0.86);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--hairline-soft);
}

.topbar-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 28px;
  height: 60px;
  display: flex;
  align-items: center;
  gap: 26px;
}

.brand {
  font: 600 13px var(--mono);
  letter-spacing: 0.03em;
  color: var(--ink);
  white-space: nowrap;
}

.brand-dim {
  color: var(--mint);
}

.search {
  flex: 1;
  max-width: 340px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid var(--hairline);
  border-radius: 8px;
  color: var(--ink-faint);
  transition: border-color 0.2s;
}

.search:focus-within {
  border-color: rgba(143, 217, 179, 0.5);
}

.search input {
  flex: 1;
  min-width: 0;
  background: none;
  border: 0;
  outline: none;
  color: var(--ink);
  font: 400 13px var(--sans);
}

.search input::placeholder {
  color: rgba(255, 255, 255, 0.28);
}

.search kbd {
  font: 500 10px var(--mono);
  color: var(--ink-faint);
  border: 1px solid var(--hairline);
  border-radius: 4px;
  padding: 1px 6px;
}

.top-links {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 20px;
}

.top-links a {
  font-size: 13px;
  color: var(--ink-dim);
}

.top-links a:hover {
  color: var(--ink);
  opacity: 1;
}

.top-cta {
  padding: 7px 14px;
  border-radius: 7px;
  background: var(--cta);
  color: var(--cta-ink) !important;
  font-weight: 600;
  transition: filter 0.2s;
}

.top-cta:hover {
  filter: brightness(1.15);
  opacity: 1 !important;
}

/* ── layout ───────────────────────────────────── */

.layout {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 28px 40px;
  display: grid;
  grid-template-columns: 216px minmax(0, 1fr);
  gap: 56px;
}

.sidebar {
  position: sticky;
  top: 60px;
  align-self: start;
  height: calc(100vh - 60px);
  overflow-y: auto;
  padding: 30px 0 30px;
  border-right: 1px solid var(--hairline-faint);
}

.side-label {
  margin: 22px 0 8px;
  font: 500 10px var(--mono);
  letter-spacing: 0.08em;
  color: var(--ink-faint);
}

.side-label:first-child {
  margin-top: 0;
}

.side-nav {
  display: flex;
  flex-direction: column;
}

.side-nav a {
  padding: 5px 10px 5px 0;
  font-size: 13.5px;
  color: var(--ink-dim);
  border-left: 1px solid transparent;
  transition: color 0.2s;
}

.side-nav a:hover {
  color: var(--ink);
  opacity: 1;
}

.side-nav a.is-active {
  color: var(--mint);
}

.side-base {
  margin-top: 28px;
  padding: 12px 14px;
  border: 1px solid var(--hairline);
  border-radius: 10px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.side-base .dot {
  flex: none;
  margin-top: 5px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mint);
  animation: kr-pulse 2.2s ease-in-out infinite;
}

.side-base-label {
  display: block;
  font: 500 9.5px var(--mono);
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  margin-bottom: 3px;
}

.side-base code {
  background: none;
  border: 0;
  padding: 0;
  font-size: 11.5px;
  white-space: normal;
  word-break: break-all;
}

/* ── content ──────────────────────────────────── */

.content {
  padding-top: 30px;
  min-width: 0;
}

.doc-section {
  padding: 42px 0;
  border-bottom: 1px solid var(--hairline-faint);
  animation: kr-reveal 0.5s ease both;
}

.doc-section.is-hidden {
  display: none;
}

.doc-section.reveal {
  opacity: 0;
}

.doc-section.reveal.is-visible {
  animation: kr-reveal 0.55s ease both;
  opacity: 1;
}

.eyebrow {
  margin: 0 0 12px;
  font: 500 10.5px var(--mono);
  letter-spacing: 0.08em;
  color: var(--mint);
}

.doc-section h2 {
  font-size: 26px;
  font-weight: 600;
  margin-bottom: 14px;
}

.copy {
  max-width: 640px;
  color: var(--ink-dim);
  margin: 0 0 24px;
}

/* hero */

.hero {
  padding-top: 56px;
}

.hero h1 {
  font-size: 40px;
  font-weight: 600;
  line-height: 1.15;
  max-width: 620px;
  margin-bottom: 18px;
}

.lede {
  max-width: 620px;
  font-size: 16px;
  color: var(--ink-dim);
  margin: 0 0 34px;
}

.fact-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  border: 1px solid var(--hairline);
  border-radius: 12px;
  overflow: hidden;
}

.fact {
  padding: 16px 18px;
  border-right: 1px solid var(--hairline-soft);
}

.fact:last-child {
  border-right: 0;
}

.fact-label {
  display: block;
  font: 500 9.5px var(--mono);
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  margin-bottom: 6px;
}

.fact strong {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
}

/* cards + grids */

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 14px;
  margin-bottom: 14px;
}

.card {
  border: 1px solid var(--hairline);
  border-radius: 12px;
  padding: 20px 22px;
  margin-bottom: 14px;
  transition: border-color 0.25s;
}

.card:hover {
  border-color: var(--hairline);
}

.grid-2 .card {
  margin-bottom: 0;
}

.card h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 12px;
}

.card p {
  margin: 0;
  font-size: 13.5px;
  color: var(--ink-dim);
}

.fields {
  margin: 0;
  display: flex;
  flex-direction: column;
}

.fields div {
  display: flex;
  gap: 14px;
  padding: 9px 0;
  border-bottom: 1px solid var(--hairline-faint);
  align-items: baseline;
}

.fields div:last-child {
  border-bottom: 0;
}

.fields dt {
  flex: none;
  width: 148px;
  font: 500 12px var(--mono);
  color: var(--ink);
}

.fields dd {
  margin: 0;
  font-size: 13px;
  color: var(--ink-dim);
}

.fields.stacked dt {
  width: 168px;
}

/* code blocks */

.code {
  position: relative;
  margin: 0 0 14px;
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 12px;
  overflow-x: auto;
}

.code code {
  display: block;
  background: none;
  border: 0;
  padding: 0;
  font: 400 12.5px/1.7 var(--mono);
  color: var(--ink-soft);
  white-space: pre;
}

.copy-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  font: 500 10px var(--mono);
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  background: var(--bg);
  border: 1px solid var(--hairline);
  border-radius: 6px;
  padding: 4px 10px;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}

.copy-btn:hover {
  color: var(--ink);
  border-color: rgba(255, 255, 255, 0.25);
}

.copy-btn.is-copied {
  color: var(--mint);
  border-color: rgba(143, 217, 179, 0.4);
}

/* steps */

.steps {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 14px;
}

.steps li {
  border: 1px solid var(--hairline);
  border-radius: 12px;
  padding: 20px 22px;
  transition: border-color 0.25s, transform 0.25s;
}

.steps li:hover {
  border-color: rgba(143, 217, 179, 0.35);
  transform: translateY(-2px);
}

.step-num {
  display: block;
  font: 500 11px var(--mono);
  letter-spacing: 0.06em;
  color: var(--mint);
  margin-bottom: 12px;
}

.steps h3 {
  font-size: 14.5px;
  margin-bottom: 7px;
}

.steps p {
  margin: 0;
  font-size: 13px;
  color: var(--ink-dim);
}

/* endpoint index */

.endpoint-list {
  border: 1px solid var(--hairline);
  border-radius: 12px;
  overflow: hidden;
}

.endpoint {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--hairline-faint);
  color: var(--ink);
  transition: background 0.2s;
}

.endpoint:last-child {
  border-bottom: 0;
}

.endpoint:hover {
  background: rgba(255, 255, 255, 0.02);
  opacity: 1;
}

.endpoint code {
  background: none;
  border: 0;
  padding: 0;
  color: var(--ink);
  font-size: 13px;
}

.endpoint p {
  margin: 0 0 0 auto;
  font-size: 12.5px;
  color: var(--ink-faint);
  text-align: right;
}

.method {
  flex: none;
  width: 44px;
  text-align: center;
  font: 600 10px var(--mono);
  letter-spacing: 0.05em;
  border-radius: 5px;
  padding: 3px 0;
}

.method.get {
  color: var(--mint);
  border: 1px solid rgba(143, 217, 179, 0.4);
}

.method.post {
  color: var(--cta-ink);
  background: var(--cta);
}

.endpoint-title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.endpoint-title h2 {
  font: 600 20px var(--mono);
  letter-spacing: -0.01em;
  margin: 0;
}

/* tabs */

.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}

.tab {
  padding: 8px 14px;
  border: 1px solid var(--hairline);
  border-radius: 7px;
  background: none;
  font: 500 12.5px var(--sans);
  color: var(--ink-dim);
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.tab:hover {
  border-color: rgba(255, 255, 255, 0.3);
  color: var(--ink);
}

.tab.is-active {
  border-color: var(--mint);
  background: var(--mint-soft);
  color: var(--mint);
}

.tab-panel {
  display: none;
}

.tab-panel.is-active {
  display: block;
  animation: kr-reveal 0.3s ease;
}

/* flow */

.flow {
  list-style: none;
  margin: 0;
  padding: 0;
}

.flow li {
  display: flex;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--hairline-faint);
}

.flow li:last-child {
  border-bottom: 0;
}

.flow span {
  flex: none;
  width: 30px;
  height: 30px;
  border: 1px solid rgba(143, 217, 179, 0.4);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font: 600 12px var(--mono);
  color: var(--mint);
}

.flow h3 {
  font-size: 14.5px;
  margin-bottom: 5px;
}

.flow p {
  margin: 0;
  font-size: 13.5px;
  color: var(--ink-dim);
  max-width: 560px;
}

/* plans */

.plan-table {
  border: 1px solid var(--hairline);
  border-radius: 12px;
  overflow: hidden;
}

.plan-row {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--hairline-faint);
}

.plan-row:last-child {
  border-bottom: 0;
}

.plan-row strong {
  width: 90px;
  font-size: 14px;
}

.plan-row .mint {
  font: 600 13px var(--mono);
  color: var(--mint);
  width: 84px;
}

.plan-row p {
  margin: 0;
  font-size: 13px;
  color: var(--ink-dim);
}

/* table */

.table-card {
  border: 1px solid var(--hairline);
  border-radius: 12px;
  overflow: hidden;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

th {
  text-align: left;
  font: 500 10.5px var(--mono);
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  padding: 12px 18px;
  border-bottom: 1px solid var(--hairline-soft);
}

td {
  padding: 12px 18px;
  border-bottom: 1px solid var(--hairline-faint);
  color: var(--ink-dim);
  vertical-align: top;
}

tr:last-child td {
  border-bottom: 0;
}

/* footer */

.foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 30px 0 10px;
  font-size: 12.5px;
  color: var(--ink-faint);
}

.foot-links {
  display: flex;
  gap: 18px;
}

.foot-links a {
  color: var(--ink-dim);
}

/* responsive */

@media (max-width: 920px) {
  .layout {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .sidebar {
    position: static;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--hairline-faint);
    padding-bottom: 18px;
  }

  .side-nav {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 2px 16px;
  }

  .hero h1 {
    font-size: 30px;
  }

  .search {
    display: none;
  }

  .fields dt,
  .fields.stacked dt {
    width: 120px;
  }
}