:root {
  --ink: #0e1622;
  --navy: #101f3c;
  --indigo: #1b2a55;
  --oracle: #c74634;
  --auth0: #eb5424;
  --db: #0f6b6a;
  --paper: #f7f5f0;
  --card: #ffffff;
  --code-bg: #0e1622;
  --line: #e0dacf;
  --muted: #5c6672;
  --ok: #2f6f5e;
  --warn: #8a5a00;
  --radius: 14px;
  --shadow: 0 10px 28px rgba(14, 22, 34, 0.08);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
}
a { color: var(--oracle); }
.wrap { max-width: 980px; margin: 0 auto; padding: 0 1.4rem; }
nav.top {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  gap: 10px; flex-wrap: wrap;
  padding: 0.8rem 1.4rem;
  background: var(--navy); color: #fff;
  box-shadow: 0 2px 10px rgba(0,0,0,.25);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: .02em; }
.brand a { color: #fff; text-decoration: none; }
.brand-mark {
  width: 34px; height: 34px; border-radius: 9px;
  background: linear-gradient(135deg, var(--oracle), var(--auth0));
  display: grid; place-items: center; color: #fff; font-weight: 800;
}
.nav-links { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; }
.nav-links a {
  color: #e6ecf7; text-decoration: none; padding: 8px 12px; border-radius: 999px;
  font-size: .92rem;
}
.nav-links a:hover { background: rgba(255,255,255,.12); }
.nav-links a.active { background: rgba(255,255,255,.16); }
.nav-links .cta { background: var(--auth0); color: #fff; }
.nav-links .cta:hover { background: #d8471a; }

header.page-hero { background: var(--navy); color: #fff; padding: 3rem 0 3.2rem; }
header.page-hero .eyebrow { color: #ffb59d; text-transform: uppercase; letter-spacing: .14em; font-size: .8rem; font-weight: 600; margin-bottom: .8rem; }
header.page-hero h1 { font-size: clamp(1.7rem, 4vw, 2.5rem); line-height: 1.14; letter-spacing: -.01em; max-width: 24ch; }
header.page-hero p.lead { margin-top: 1rem; max-width: 68ch; color: #d8e1ef; font-size: 1.05rem; }

section.page { padding: 3rem 0; }
section.page.alt { background: #fff; }
.kicker { color: var(--oracle); text-transform: uppercase; letter-spacing: .14em; font-size: .78rem; font-weight: 700; }
h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); margin: .4rem 0 1rem; letter-spacing: -.01em; }
h3 { margin: 1.4rem 0 .6rem; }
.heading-anchor { color: inherit; text-decoration: none; }
.heading-anchor:hover { color: inherit; }
.anchor-mark { margin-left: .4em; color: var(--oracle); opacity: 0; transition: opacity .15s ease; }
.heading-anchor:hover .anchor-mark,
.heading-anchor:focus-visible .anchor-mark { opacity: 1; }
h1[id], h2[id], h3[id], section[id] { scroll-margin-top: 5.5rem; }
h4 { margin: 1.1rem 0 .4rem; }
p + p { margin-top: .7rem; }
ul, ol { margin: .6rem 0 .8rem 1.3rem; }
li { margin-bottom: .3rem; }
.lead2 { font-size: 1.06rem; color: var(--muted); max-width: 72ch; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 14px; margin: 1.5rem 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.1rem 1.2rem; box-shadow: var(--shadow); }
.card h3 { margin: .2rem 0 .4rem; font-size: 1.05rem; }
.card p { font-size: .95rem; color: #3a4450; }
.card a { font-weight: 600; }

.diagram { background: var(--navy); color: #dce4f0; border-radius: var(--radius); padding: 1.4rem; margin: 1.5rem 0; overflow-x: auto; }
.diagram pre { font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: .82rem; line-height: 1.5; white-space: pre; }

.pill { display: inline-block; font-size: .75rem; font-weight: 700; padding: 2px 9px; border-radius: 999px; vertical-align: middle; }
.pill-oracle { background: rgba(199,70,52,.15); color: var(--oracle); }
.pill-auth0 { background: rgba(235,84,36,.15); color: var(--auth0); }
.pill-db { background: rgba(15,107,106,.14); color: var(--db); }
.pill-blue { background: #eaf1ff; color: #26478f; }

.callout { border-left: 4px solid var(--oracle); background: #fff; border-radius: 0 var(--radius) var(--radius) 0; padding: 1rem 1.2rem; margin: 1.4rem 0; box-shadow: var(--shadow); }
.callout.warn { border-left-color: var(--warn); background: #fff9ec; }
.callout.ok { border-left-color: var(--ok); background: #f0faf6; }
.callout.blue { border-left-color: #2a5bd7; background: #f0f4ff; }
.callout > strong:first-child { display: block; margin-bottom: .3rem; }
.callout p { margin: .4rem 0 0; }
.callout ul { margin-top: .3rem; }

code { font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: .88em; background: #efece4; border-radius: 5px; padding: 1px 5px; }
pre.code {
  background: var(--code-bg); color: #e8eef7; border-radius: var(--radius);
  padding: 1.1rem 1.2rem; overflow-x: auto; margin: .8rem 0;
  font-size: .84rem; line-height: 1.55;
}
pre.code code { background: none; padding: 0; font-size: .9rem; }
pre.code .c { color: #7d8aa0; } pre.code .k { color: #ffb59d; }
pre.code .s { color: #9fd6a8; } pre.code .n { color: #8fc0ff; }

/* OAuth explainer */
.actors { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px,1fr)); gap: 12px; margin: 1.4rem 0; }
.actor { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 1rem; text-align: center; box-shadow: var(--shadow); }
.actor .ico { font-size: 1.5rem; }
.actor .role { font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); font-weight: 700; }
.actor b { display: block; margin: .2rem 0; }
.actor small { color: var(--muted); line-height: 1.4; display: block; font-size: .85rem; }

ol.seq { list-style: none; counter-reset: seq; margin: 1.4rem 0; }
ol.seq > li { counter-increment: seq; position: relative; padding: 0 0 0 3.4rem; margin: 0 0 1.3rem; }
ol.seq > li::before {
  content: counter(seq); position: absolute; left: 0; top: 0;
  width: 2.3rem; height: 2.3rem; border-radius: 50%;
  background: var(--navy); color: #ffd8c9; font-weight: 800;
  display: grid; place-items: center; font-size: 1rem;
}
ol.seq > li::after { content: ""; position: absolute; left: 1.08rem; top: 2.5rem; bottom: -1.55rem; width: 2px; background: var(--line); }
ol.seq > li:last-child::after { display: none; }
.seq .who { font-weight: 700; font-size: .9rem; }
.seq .who em { font-style: normal; color: var(--muted); font-weight: 500; }
.seq p { color: #3a4450; font-size: .98rem; }

table { width: 100%; border-collapse: collapse; margin: 1.2rem 0; background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); font-size: .92rem; }
th, td { text-align: left; padding: .7rem .9rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--indigo); color: #fff; font-size: .82rem; text-transform: uppercase; letter-spacing: .05em; }
tr:last-child td { border-bottom: 0; }
tbody tr:nth-child(even) { background: #faf8f3; }
.term { font-weight: 700; white-space: nowrap; }
td code { white-space: nowrap; }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 1rem 0; }
.grid3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; margin: 1rem 0; }
@media (max-width: 760px) { .grid2, .grid3 { grid-template-columns: 1fr; } }

.checklist { list-style: none; margin: 1rem 0; }
.checklist li { padding-left: 1.8rem; position: relative; margin-bottom: .5rem; }
.checklist li::before { content: "☐"; position: absolute; left: 0; color: var(--oracle); font-weight: 800; }

footer.page { background: var(--navy); color: #c3cede; padding: 2.4rem 0; margin-top: 2rem; }
footer.page a { color: #ffc2ad; }
footer.page .wrap { display: flex; flex-wrap: wrap; gap: 14px; justify-content: space-between; align-items: center; }
.fnav { display: flex; flex-wrap: wrap; gap: 4px 16px; list-style: none; font-size: .92rem; }

.btn {
  display: inline-block; text-decoration: none; font-weight: 700;
  padding: 11px 20px; border-radius: 999px; background: var(--auth0); color: #fff; margin-right: .4rem;
}
.btn:hover { background: #d8471a; color: #fff; }
.btn.ghost { background: transparent; border: 1.5px solid var(--auth0); color: var(--auth0); }
.btn.ghost:hover { background: rgba(235,84,36,.08); color: var(--auth0); }

.docindex { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px,1fr)); gap: 12px; margin: 1.4rem 0; }
.docitem { background: var(--card); border: 1px solid var(--line); border-left: 4px solid var(--oracle); border-radius: 10px; padding: .9rem 1rem; text-decoration: none; color: inherit; box-shadow: var(--shadow); display: block; }
.docitem:hover { border-left-color: var(--auth0); }
.docitem small { color: var(--muted); display: block; }
.docitem b { display: block; color: var(--ink); }