@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700&family=Fraunces:ital,opsz,wght@1,9..144,500&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root {
  --ink: #14100c;
  --ink-2: #1c1610;
  --ink-3: #262019;
  --parchment: #f2e9d8;
  --parchment-dim: #cabfa9;
  --parchment-faint: #8d8271;
  --brass: #c9a24b;
  --brass-bright: #e6c477;
  --wax: #a13f34;
  --wax-bright: #c85142;
  --line: #3a3226;
  --header-bg-top: rgba(20, 16, 12, 0.97);
  --header-bg-bottom: rgba(20, 16, 12, 0.88);
  --code-str: #9fb896;
  --code-num: #d6a672;
  --mono: 'IBM Plex Mono', ui-monospace, monospace;
  --sans: 'IBM Plex Sans', system-ui, sans-serif;
  --serif: 'Fraunces', Georgia, serif;
  color-scheme: dark;
}

:root[data-theme="light"] {
  --ink: #f3ead9;
  --ink-2: #e8dcc2;
  --ink-3: #ded0ae;
  --parchment: #241c12;
  --parchment-dim: #5b4f3a;
  --parchment-faint: #857758;
  --brass: #9c7328;
  --brass-bright: #7a5920;
  --wax: #a13f34;
  --wax-bright: #82291f;
  --line: #d7c8a3;
  --header-bg-top: rgba(243, 234, 217, 0.97);
  --header-bg-bottom: rgba(243, 234, 217, 0.88);
  --code-str: #3f6b48;
  --code-num: #966127;
  color-scheme: light;
}

/* fallback for when theme.js hasn't run yet (or is blocked): follow the OS */
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --ink: #f3ead9;
    --ink-2: #e8dcc2;
    --ink-3: #ded0ae;
    --parchment: #241c12;
    --parchment-dim: #5b4f3a;
    --parchment-faint: #857758;
    --brass: #9c7328;
    --brass-bright: #7a5920;
    --wax: #a13f34;
    --wax-bright: #82291f;
    --line: #d7c8a3;
    --header-bg-top: rgba(243, 234, 217, 0.97);
    --header-bg-bottom: rgba(243, 234, 217, 0.88);
    --code-str: #3f6b48;
    --code-num: #966127;
    color-scheme: light;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--parchment);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  position: relative;
  min-height: 100vh;
  transition: background-color 0.2s ease, color 0.2s ease;
}

/* paper grain */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.05'/%3E%3C/svg%3E");
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(ellipse 900px 500px at 15% -10%, rgba(201, 162, 75, 0.10), transparent 60%),
    radial-gradient(ellipse 700px 600px at 105% 15%, rgba(161, 63, 52, 0.10), transparent 55%);
}

a { color: var(--brass-bright); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

code, pre, .mono { font-family: var(--mono); }

h1, h2, h3, h4 { font-family: var(--serif); font-weight: 600; color: var(--parchment); margin: 0 0 0.5em; letter-spacing: -0.01em; }
h1 { font-weight: 700; }

.stamp-word {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 500;
  color: var(--brass-bright);
}

/* ---------- layout shell ---------- */
.shell { position: relative; z-index: 1; max-width: 980px; margin: 0 auto; padding: 0 32px 120px; }

header.top {
  position: relative;
  z-index: 2;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, var(--header-bg-top), var(--header-bg-bottom));
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
}
.top-inner {
  max-width: 980px;
  margin: 0 auto;
  padding: 18px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--parchment);
}
.brand .seal {
  width: 26px; height: 26px;
  border: 1.5px solid var(--brass);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 12px;
  color: var(--brass-bright);
  font-family: var(--serif);
  font-style: italic;
}
.top-right { display: flex; align-items: center; gap: 22px; }

nav.top-nav { display: flex; gap: 24px; font-size: 14px; }
nav.top-nav a { color: var(--parchment-dim); font-weight: 500; }
nav.top-nav a:hover { color: var(--brass-bright); }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  border: 1.5px solid var(--line);
  border-radius: 50%;
  background: transparent;
  color: var(--parchment-dim);
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.15s ease;
}
.theme-toggle:hover { border-color: var(--brass); color: var(--brass-bright); }
.theme-toggle:active { transform: scale(0.9); }
.theme-toggle svg { width: 16px; height: 16px; }
.theme-toggle .i-moon { display: none; }
:root[data-theme="light"] .theme-toggle .i-sun { display: none; }
:root[data-theme="light"] .theme-toggle .i-moon { display: block; }

footer.site {
  position: relative; z-index: 1;
  border-top: 1px solid var(--line);
  padding: 40px 32px 60px;
  text-align: center;
  color: var(--parchment-faint);
  font-size: 13px;
}

/* ---------- hero ---------- */
.hero { padding: 96px 0 56px; }
.hero .eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brass);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.hero .eyebrow::before { content: ''; width: 28px; height: 1px; background: var(--brass); display: inline-block; }
.hero h1 { font-size: 52px; line-height: 1.05; max-width: 15ch; }
.hero p.lede { font-size: 19px; color: var(--parchment-dim); max-width: 56ch; margin-top: 22px; }

.hero-actions { display: flex; gap: 14px; margin-top: 36px; flex-wrap: wrap; }
.btn {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 14px;
  padding: 13px 22px;
  border-radius: 3px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-primary { background: var(--brass); color: var(--ink); }
.btn-primary:hover { background: var(--brass-bright); text-decoration: none; }
.btn-ghost { border-color: var(--line); color: var(--parchment); }
.btn-ghost:hover { border-color: var(--brass); color: var(--brass-bright); text-decoration: none; }

/* ---------- credential note ---------- */
.credential-note {
  margin-top: 44px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--brass);
  background: var(--ink-2);
  padding: 18px 22px;
  border-radius: 2px;
  font-size: 14.5px;
  color: var(--parchment-dim);
}
.credential-note strong { color: var(--parchment); }
.credential-note code { color: var(--brass-bright); background: var(--ink-3); padding: 1px 6px; border-radius: 3px; }

/* ---------- journey grid ---------- */
.section-label {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--parchment-faint);
  margin: 72px 0 22px;
}

.journeys { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 720px) { .journeys { grid-template-columns: 1fr; } }

.jcard {
  position: relative;
  border: 1px solid var(--line);
  background: var(--ink-2);
  border-radius: 4px;
  padding: 26px 26px 24px;
  transition: border-color 0.2s ease, transform 0.2s ease;
  overflow: hidden;
}
.jcard::before {
  content: attr(data-n);
  position: absolute;
  top: -14px; right: -6px;
  font-family: var(--serif);
  font-style: italic;
  font-size: 90px;
  color: rgba(201,162,75,0.06);
  line-height: 1;
  pointer-events: none;
}
.jcard:hover { border-color: var(--brass); transform: translateY(-2px); }
.jcard .jtag {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--wax-bright);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
  display: block;
}
.jcard h3 { font-size: 21px; margin-bottom: 10px; }
.jcard p { color: var(--parchment-dim); font-size: 14.5px; margin: 0 0 16px; }
.jcard .jgo { font-family: var(--mono); font-size: 13px; color: var(--brass-bright); }
.jcard .jgo::after { content: ' →'; }

/* ---------- journey page ---------- */
.journey-header { padding: 64px 0 8px; }
.journey-header .eyebrow {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--wax-bright); margin-bottom: 14px;
}
.journey-header h1 { font-size: 38px; max-width: 20ch; }
.journey-header p.lede { color: var(--parchment-dim); font-size: 17px; max-width: 60ch; margin-top: 16px; }

.crumbs { padding: 28px 0 0; font-family: var(--mono); font-size: 13px; color: var(--parchment-faint); }
.crumbs a { color: var(--parchment-faint); }
.crumbs a:hover { color: var(--brass-bright); }

.steps { counter-reset: step; margin-top: 56px; }
.step {
  position: relative;
  padding: 0 0 52px 56px;
  border-left: 1px solid var(--line);
  margin-left: 19px;
}
.step:last-child { border-left-color: transparent; padding-bottom: 4px; }
.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: -20px; top: 0;
  width: 39px; height: 39px;
  border-radius: 50%;
  background: var(--ink);
  border: 1.5px solid var(--brass);
  color: var(--brass-bright);
  font-family: var(--serif);
  font-weight: 600;
  font-size: 16px;
  display: grid;
  place-items: center;
}
.step h2 { font-size: 23px; margin-bottom: 10px; }
.step .step-body { color: var(--parchment-dim); font-size: 15.5px; }
.step .step-body p { margin: 0 0 14px; }
.step .step-body ul { margin: 0 0 14px; padding-left: 20px; }
.step .step-body li { margin-bottom: 6px; }
.step .step-body strong { color: var(--parchment); }

.field-table { width: 100%; border-collapse: collapse; margin: 16px 0 20px; font-size: 14px; }
.field-table th, .field-table td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.field-table th { font-family: var(--mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--parchment-faint); font-weight: 500; }
.field-table td.fname { font-family: var(--mono); color: var(--brass-bright); white-space: nowrap; }
.field-table td.ftype { color: var(--parchment-faint); font-family: var(--mono); font-size: 12.5px; white-space: nowrap; }

pre.code {
  background: var(--ink-3);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 18px 20px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.65;
  margin: 14px 0 20px;
  color: var(--parchment);
}
pre.code .c-key { color: var(--brass-bright); }
pre.code .c-str { color: var(--code-str); }
pre.code .c-num { color: var(--code-num); }
pre.code .c-com { color: var(--parchment-faint); font-style: italic; }

.callout {
  border: 1px solid var(--line);
  border-left: 3px solid var(--wax-bright);
  background: var(--ink-2);
  padding: 14px 18px;
  border-radius: 2px;
  font-size: 14px;
  color: var(--parchment-dim);
  margin: 6px 0 20px;
}
.callout.brass { border-left-color: var(--brass); }
.callout strong { color: var(--parchment); }

.pill-row { display: flex; gap: 8px; flex-wrap: wrap; margin: 10px 0 18px; }
.pill {
  font-family: var(--mono);
  font-size: 12px;
  padding: 5px 11px;
  border: 1px solid var(--line);
  border-radius: 20px;
  color: var(--parchment-dim);
}
.pill.method-post { border-color: var(--brass); color: var(--brass-bright); }

.endpoint-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 13px;
  background: var(--ink-3);
  border: 1px solid var(--line);
  padding: 7px 12px;
  border-radius: 3px;
  color: var(--parchment);
  margin: 4px 8px 4px 0;
}
.endpoint-tag .m { color: var(--brass-bright); font-weight: 600; }

.ref-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--parchment-faint);
  vertical-align: middle;
}
.ref-link:hover { color: var(--brass-bright); }

.next-links { margin-top: 72px; padding-top: 32px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.next-links a.nl { font-family: var(--mono); font-size: 14px; color: var(--parchment-dim); }
.next-links a.nl:hover { color: var(--brass-bright); }
.next-links a.nl .lbl { display: block; font-size: 11px; color: var(--parchment-faint); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 4px; }

/* seal motif for taxcert page */
.seal-big {
  width: 84px; height: 84px;
  border: 2px solid var(--brass);
  border-radius: 50%;
  display: grid;
  place-items: center;
  position: relative;
  margin-bottom: 22px;
}
.seal-big::before {
  content: '';
  position: absolute; inset: 6px;
  border: 1px dashed var(--brass);
  border-radius: 50%;
}
.seal-big span { font-family: var(--serif); font-style: italic; color: var(--brass-bright); font-size: 13px; text-align: center; line-height: 1.2; }

/* 404 */
.notfound { padding: 140px 0; text-align: center; }
.notfound h1 { font-size: 96px; color: var(--brass); }