/* ============================================================
   nomba SDK docs — "passbook" design system
   A deep forest-ink ledger, lit like a desk lamp on old paper.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root {
  --bg:        #11181A;
  --surface:   #182321;
  --surface-2: #1E2B27;
  --ink:       #E9E4D6;
  --ink-dim:   #A9B0A6;
  --ink-faint: #6E7A70;
  --hairline:  #2B3631;
  --accent:    #4FA37A;     /* naira green */
  --accent-dim:#3A7A5C;
  --amber:     #D98E4A;     /* stamp amber */
  --red:       #C1583F;     /* void-stamp red, used sparingly */
  --get:       #4FA37A;
  --post:      #D98E4A;
  --put:       #6E9BD9;
  --delete:    #C1583F;

  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'IBM Plex Sans', -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;

  --max-width: 1180px;
  --radius: 3px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  background-image:
    repeating-linear-gradient(transparent, transparent 27px, rgba(233,228,214,0.018) 28px);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--ink);
  line-height: 1.2;
  margin: 0 0 .5em;
}
h1 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 700; }
h2 { font-size: 1.65rem; margin-top: 2.5em; }
h3 { font-size: 1.2rem; margin-top: 2em; }

p { margin: 0 0 1.1em; color: var(--ink-dim); max-width: 68ch; }
p code, li code { color: var(--accent); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: .6em;
}

code, pre, kbd {
  font-family: var(--font-mono);
  font-size: .88em;
}

code {
  background: var(--surface-2);
  padding: .15em .4em;
  border-radius: var(--radius);
  border: 1px solid var(--hairline);
}

pre {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.1em 1.3em;
  overflow-x: auto;
  margin: 0 0 1.4em;
  position: relative;
}
pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--ink);
}

.copy-btn {
  position: absolute;
  top: .6em;
  right: .6em;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .05em;
  text-transform: uppercase;
  background: var(--surface-2);
  color: var(--ink-dim);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: .3em .6em;
  cursor: pointer;
}
.copy-btn:hover { color: var(--accent); border-color: var(--accent-dim); }

/* ---- layout shell ---- */

.shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  max-width: var(--max-width);
  margin: 0 auto;
}

.sidebar {
  border-right: 1px solid var(--hairline);
  padding: 2.2em 1.6em 4em;
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
  overflow-y: auto;
}

.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--ink);
  display: flex;
  align-items: baseline;
  gap: .4em;
  margin-bottom: .2em;
}
.brand .stamp {
  font-family: var(--font-mono);
  font-size: .62rem;
  letter-spacing: .08em;
  color: var(--bg);
  background: var(--accent);
  padding: .15em .4em;
  border-radius: 2px;
  transform: rotate(-3deg);
}
.brand-sub {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--ink-faint);
  margin-bottom: 2em;
}

nav.toc { display: flex; flex-direction: column; gap: .15em; }
nav.toc .group-label {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 1.4em 0 .5em;
}
nav.toc .group-label:first-child { margin-top: 0; }
nav.toc a {
  color: var(--ink-dim);
  font-size: .92rem;
  padding: .3em .5em;
  border-radius: var(--radius);
  border-left: 2px solid transparent;
}
nav.toc a:hover { color: var(--ink); text-decoration: none; background: var(--surface); }
nav.toc a.active {
  color: var(--accent);
  border-left-color: var(--accent);
  background: var(--surface);
}

main {
  padding: 3.5em 3.2em 8em;
  min-width: 0;
}

.page-foot {
  margin-top: 5em;
  padding-top: 1.6em;
  border-top: 1px solid var(--hairline);
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--ink-faint);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1em;
}

/* ---- ledger rows (endpoint listings) ---- */

.ledger {
  border-top: 1px solid var(--hairline);
  margin: 1.2em 0 2.2em;
}
.ledger-row {
  display: grid;
  grid-template-columns: 64px 1fr auto;
  gap: 1em;
  align-items: baseline;
  padding: .65em 0;
  border-bottom: 1px solid var(--hairline);
  font-family: var(--font-mono);
  font-size: .85rem;
}
.ledger-row .method {
  font-weight: 600;
  font-size: .7rem;
  letter-spacing: .04em;
  padding: .2em .45em;
  border-radius: 2px;
  text-align: center;
  align-self: start;
}
.method.get    { color: var(--get);    background: rgba(79,163,122,.12); }
.method.post   { color: var(--post);   background: rgba(217,142,74,.12); }
.method.put    { color: var(--put);    background: rgba(110,155,217,.12); }
.method.delete { color: var(--delete); background: rgba(193,88,63,.12); }

.ledger-row .path { color: var(--ink); word-break: break-all; }
.ledger-row .summary {
  color: var(--ink-faint);
  font-family: var(--font-body);
  font-size: .85rem;
}
.ledger-row .fn {
  display: block;
  color: var(--accent-dim);
  font-size: .76rem;
  margin-top: .15em;
}

/* ---- callouts ---- */

.callout {
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--amber);
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1em 1.3em;
  margin: 1.4em 0;
}
.callout p:last-child { margin-bottom: 0; }
.callout .label {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--amber);
  display: block;
  margin-bottom: .4em;
}
.callout.accent { border-left-color: var(--accent); }
.callout.accent .label { color: var(--accent); }

/* ---- table of contents grid (index page feature cards) ---- */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
  margin: 1.6em 0 2.4em;
}
.grid > a {
  background: var(--surface);
  padding: 1.4em 1.5em;
  color: var(--ink);
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: .4em;
}
.grid > a:hover { background: var(--surface-2); }
.grid > a .num {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--accent);
}
.grid > a .title { font-family: var(--font-display); font-weight: 600; font-size: 1.05rem; }
.grid > a .desc { font-size: .85rem; color: var(--ink-faint); }

/* ---- mobile nav toggle ---- */

.nav-toggle {
  display: none;
  position: fixed;
  top: 1em;
  right: 1em;
  z-index: 20;
  background: var(--surface-2);
  border: 1px solid var(--hairline);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: .8rem;
  padding: .5em .8em;
  border-radius: var(--radius);
}

@media (max-width: 880px) {
  .shell { display: block; }
  .sidebar {
    position: fixed;
    inset: 0 0 0 auto;
    width: 80%;
    max-width: 320px;
    z-index: 15;
    background: var(--bg);
    transform: translateX(100%);
    transition: transform .2s ease;
    height: 100vh;
  }
  .sidebar.open { transform: translateX(0); }
  .nav-toggle { display: block; }
  main { padding: 5em 1.4em 6em; }
  .ledger-row { grid-template-columns: 56px 1fr; }
  .ledger-row .summary { grid-column: 1 / -1; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .sidebar { transition: none; }
}