/* PayX docs — single-page docs site, static HTML, no build step.
   Tokens roughly mirror the dashboard's dark theme so a merchant
   moving between docs and app doesn't get visual whiplash. */

:root {
  --bg: #0b0d11;
  --bg-elevated: #11141a;
  --bg-code: #15191f;
  --border: #1f242c;
  --border-strong: #2a313a;
  --fg: #e6e8eb;
  --fg-muted: #9aa3ad;
  --fg-dim: #6b7480;
  --accent: #a78bfa;
  --accent-fg: #c4b5fd;
  --rose: #f87171;
  --emerald: #34d399;
  --amber: #fbbf24;
  --max-content: 740px;
  --sidebar-w: 240px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-fg); text-decoration: underline; }

.layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  min-height: 100vh;
}

/* Sidebar — sticky on desktop, collapsible on mobile via summary/details */
.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  border-right: 1px solid var(--border);
  background: var(--bg-elevated);
  padding: 24px 20px;
}
.sidebar .brand {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
}
.sidebar .brand a { color: var(--fg); }
.sidebar .tagline {
  font-size: 12px;
  color: var(--fg-dim);
  margin-bottom: 28px;
}
.sidebar nav { font-size: 14px; }
.sidebar nav h4 {
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 11px;
  color: var(--fg-dim);
  margin: 22px 0 8px;
  font-weight: 600;
}
.sidebar nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.sidebar nav li {
  margin: 0 0 4px;
}
.sidebar nav a {
  display: block;
  padding: 4px 0;
  color: var(--fg-muted);
}
.sidebar nav a:hover { color: var(--fg); text-decoration: none; }

.content {
  padding: 56px 64px;
  max-width: calc(var(--max-content) + 128px);
}

h1, h2, h3, h4 { color: var(--fg); }
h1 { font-size: 32px; margin: 0 0 16px; line-height: 1.2; }
h2 { font-size: 24px; margin: 56px 0 16px; padding-top: 12px; border-top: 1px solid var(--border); }
h3 { font-size: 18px; margin: 32px 0 12px; }
h4 { font-size: 15px; margin: 24px 0 8px; color: var(--fg-muted); }

p, ul, ol { margin: 0 0 12px; }
ul, ol { padding-left: 24px; }
li { margin-bottom: 4px; }

code {
  font-family: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, monospace;
  font-size: 0.88em;
  background: var(--bg-code);
  border: 1px solid var(--border);
  padding: 1px 6px;
  border-radius: 4px;
}
pre {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 18px;
  overflow-x: auto;
  margin: 12px 0 20px;
  font-size: 13px;
  line-height: 1.55;
}
pre code {
  background: transparent;
  border: none;
  padding: 0;
  font-size: inherit;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0 20px;
  font-size: 14px;
}
th, td {
  text-align: left;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
th {
  font-weight: 600;
  color: var(--fg-muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-bottom-color: var(--border-strong);
}
td code { white-space: nowrap; }

blockquote, .note {
  background: rgba(167, 139, 250, 0.06);
  border-left: 3px solid var(--accent);
  padding: 12px 16px;
  margin: 16px 0;
  border-radius: 0 6px 6px 0;
  color: var(--fg-muted);
}
.note strong { color: var(--fg); }

.callout-warn {
  background: rgba(251, 191, 36, 0.06);
  border-left: 3px solid var(--amber);
}

.method {
  display: inline-block;
  font-family: "SF Mono", Monaco, monospace;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 4px;
  margin-right: 8px;
  letter-spacing: 0.04em;
}
.method.get { background: rgba(52, 211, 153, 0.15); color: var(--emerald); }
.method.post { background: rgba(167, 139, 250, 0.15); color: var(--accent); }
.method.patch { background: rgba(251, 191, 36, 0.15); color: var(--amber); }
.method.delete { background: rgba(248, 113, 113, 0.15); color: var(--rose); }

.endpoint {
  display: flex;
  align-items: baseline;
  gap: 0;
  font-family: "SF Mono", Monaco, monospace;
  font-size: 14px;
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 14px;
  margin: 8px 0 12px;
}
.endpoint .path { color: var(--fg); }

/* Tabs for code examples */
.tabs {
  margin: 16px 0 20px;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.tab-headers {
  display: flex;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
}
.tab-headers button {
  background: transparent;
  border: none;
  color: var(--fg-muted);
  padding: 10px 16px;
  cursor: pointer;
  font-size: 13px;
  font-family: inherit;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 120ms;
}
.tab-headers button:hover { color: var(--fg); }
.tab-headers button.active {
  color: var(--fg);
  border-bottom-color: var(--accent);
}
.tab-panel { display: none; }
.tab-panel.active { display: block; }
.tab-panel pre {
  margin: 0;
  border: none;
  border-radius: 0;
}

@media (max-width: 800px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: static; height: auto; border-right: none; border-bottom: 1px solid var(--border); }
  .content { padding: 32px 24px; }
}