/* PayChek Developer Docs — extends official tokens */
.docs-shell {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 0;
  min-height: calc(100vh - var(--nav-h));
  width: min(1280px, calc(100% - 32px));
  margin: 0 auto;
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 70%, transparent);
}

.docs-side {
  position: sticky;
  top: var(--nav-h);
  align-self: start;
  max-height: calc(100vh - var(--nav-h));
  overflow: auto;
  padding: 28px 18px 48px;
  border-right: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
}

.docs-side h2 {
  font-family: var(--display);
  font-size: 0.95rem;
  letter-spacing: -0.02em;
  margin: 0 0 6px;
}

.docs-side .hint {
  color: var(--muted);
  font-size: 0.78rem;
  margin: 0 0 20px;
  line-height: 1.45;
}

.docs-nav-group {
  margin-bottom: 18px;
}

.docs-nav-group .g-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 0 0 8px;
  padding-left: 10px;
}

.docs-nav-group a {
  display: block;
  padding: 8px 10px;
  border-radius: 10px;
  font-size: 0.84rem;
  color: var(--muted);
  margin-bottom: 2px;
}

.docs-nav-group a:hover,
.docs-nav-group a.active {
  color: var(--text);
  background: rgba(45, 212, 191, 0.1);
}

.docs-nav-group a.active {
  border: 1px solid rgba(45, 212, 191, 0.28);
}

.docs-h3 {
  font-size: 1.05rem;
  margin: 28px 0 12px;
  letter-spacing: -0.02em;
}

.flow-steps {
  display: grid;
  gap: 10px;
  margin: 20px 0 24px;
}
.flow-step {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
}
.flow-step > span {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--accent-dim);
  color: var(--accent);
  font-weight: 700;
  font-size: 0.85rem;
  display: grid;
  place-items: center;
}
.flow-step strong { display: block; margin-bottom: 2px; }
.flow-step p { margin: 0; color: var(--muted); font-size: 0.9rem; }

.docs-list {
  margin: 12px 0 0;
  padding-left: 1.2rem;
  color: var(--muted);
  line-height: 1.7;
}
.docs-list li { margin-bottom: 6px; }

.docs-main {
  padding: 36px 36px 80px;
  min-width: 0;
}

.docs-hero {
  margin-bottom: 36px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border);
}

.docs-hero .kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(45, 212, 191, 0.25);
  padding: 5px 11px;
  border-radius: 999px;
}

.docs-hero h1 {
  font-family: var(--display);
  font-size: clamp(1.85rem, 3.5vw, 2.55rem);
  letter-spacing: -0.035em;
  line-height: 1.1;
  margin: 14px 0 10px;
  max-width: 18ch;
}

.docs-hero p {
  color: var(--muted);
  font-size: 1.02rem;
  max-width: 52ch;
  margin: 0;
}

.docs-section {
  display: none;
  animation: docsIn 0.28s ease;
}

.docs-section.active { display: block; }

@keyframes docsIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

.docs-section > h2 {
  font-family: var(--display);
  font-size: 1.45rem;
  letter-spacing: -0.03em;
  margin: 0 0 8px;
}

.docs-section > .lead {
  color: var(--muted);
  margin: 0 0 24px;
  max-width: 60ch;
}

.step {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 14px;
  margin-bottom: 22px;
}

.step-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 0.8rem;
  font-weight: 700;
  color: #042f2e;
  background: var(--accent);
  margin-top: 2px;
}

.step h3 {
  margin: 0 0 6px;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.step p {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 0.92rem;
}

.callout {
  border: 1px solid rgba(45, 212, 191, 0.22);
  background: rgba(45, 212, 191, 0.06);
  border-radius: 12px;
  padding: 14px 16px;
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0 0 20px;
}

.callout strong { color: var(--text); }

.callout.warn {
  border-color: rgba(251, 191, 36, 0.3);
  background: rgba(251, 191, 36, 0.07);
}

.purpose-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.purpose-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  background: var(--surface);
}

.purpose-card h4 {
  margin: 0 0 8px;
  font-size: 0.95rem;
  color: var(--accent);
}

.purpose-card p {
  margin: 0;
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.5;
}

.code-block {
  position: relative;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #0a0c10;
  overflow: hidden;
  margin: 0 0 8px;
}

.code-block .code-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px 8px 14px;
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,0.02);
}

.code-block .code-bar span {
  font-size: 0.7rem;
  color: #c4a574;
  font-family: var(--mono);
  letter-spacing: 0.04em;
}

.code-block button.copy {
  border: 0;
  background: transparent;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  padding: 6px 10px;
  border-radius: 8px;
}

.code-block button.copy:hover { background: var(--accent-dim); }

.code-block pre {
  margin: 0;
  padding: 14px 16px 16px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.55;
  color: #d1d5db;
}

.lang-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 22px;
}

.lang-chips button {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  border-radius: 999px;
  padding: 7px 12px;
  font-size: 0.8rem;
  cursor: pointer;
}

.lang-chips button.active {
  color: #042f2e;
  background: var(--accent);
  border-color: var(--accent);
  font-weight: 600;
}

.lang-panel { display: none; }
.lang-panel.active { display: block; }

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 20px;
}

table.docs-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

table.docs-table th,
table.docs-table td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

table.docs-table th {
  color: var(--muted);
  font-weight: 600;
  background: rgba(255,255,255,0.02);
}

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

code.inline {
  font-family: var(--mono);
  font-size: 0.84em;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 1px 6px;
  border-radius: 6px;
}

@media (max-width: 900px) {
  .docs-shell {
    grid-template-columns: 1fr;
    width: min(100% - 20px, 1280px);
  }
  .docs-side {
    position: relative;
    top: 0;
    max-height: none;
    border-right: 0;
    border-bottom: 1px solid var(--border);
    padding-bottom: 16px;
  }
  .docs-main { padding: 24px 18px 64px; }
  .purpose-grid { grid-template-columns: 1fr; }
}