/* Callio developer portal — same dark, near-monochrome theme as the marketing site:
   warm near-black, white geometric headings, muted-grey body, light buttons, one sage-teal accent. */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  color-scheme: dark;
  --bg: #191817; --fg: #f4f2ee; --muted: #a3a097; --faint: #6f6c64;
  --line: rgba(255,255,255,.09); --card: #211f1d; --card2: #262422; --code: #201f1d;
  --accent: #88b6bf; --accent2: #9fc5d2; --light: #ece9e3; --light2: #fff;
  --get: #7aa2f7; --post: #6bd89a; --patch: #d8b36b; --delete: #e38787;
  --disp: "Alpha Lyrae", "Space Grotesk", "Inter", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.6 "Inter", system-ui, sans-serif; background: var(--bg); color: var(--muted); -webkit-font-smoothing: antialiased; }
header { position: sticky; top: 0; z-index: 2; display: flex; flex-wrap: wrap; gap: 8px 24px; align-items: center; padding: 14px 20px; background: rgba(25,24,23,.72); backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
.brand { font-family: var(--disp); font-weight: 600; font-size: 19px; letter-spacing: -0.01em; color: var(--fg); text-decoration: none; } .brand span { color: var(--muted); font-weight: 500; }
nav { display: flex; flex-wrap: wrap; gap: 4px 18px; margin-left: auto; } nav a { color: var(--muted); text-decoration: none; font-size: 15px; transition: color .12s; } nav a:hover { color: var(--fg); }
main { max-width: 960px; margin: 0 auto; padding: 0 20px 56px; }
section { padding-top: 52px; scroll-margin-top: 64px; }
h1, h2, h3 { font-family: var(--disp); color: var(--fg); }
h1 { font-size: clamp(30px, 4.4vw, 42px); line-height: 1.08; letter-spacing: -0.025em; font-weight: 500; margin: 0 0 14px; }
h2 { font-size: 27px; letter-spacing: -0.02em; font-weight: 500; margin: 0 0 14px; }
h3 { font-size: 17px; font-weight: 600; margin: 18px 0 6px; }
.lead { font-size: 18px; color: var(--muted); max-width: 680px; }
p { color: var(--muted); }
a { color: var(--accent2); }
code { font: 13.5px var(--mono); background: var(--code); border: 1px solid var(--line); color: var(--fg); padding: 1px 6px; border-radius: 5px; }
pre { background: var(--code); border: 1px solid var(--line); padding: 16px; border-radius: 12px; overflow-x: auto; } pre code { padding: 0; background: none; border: 0; font-size: 13px; color: var(--fg); }
.steps li { margin: 7px 0; color: var(--muted); } .steps b { color: var(--fg); }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.cards > div { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 6px 20px 16px; min-width: 0; transition: border-color .15s; }
.cards > div:hover { border-color: rgba(255,255,255,.2); }
.tabs { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0 14px; }
.tabs button { border: 1px solid var(--line); background: var(--card); color: var(--muted); padding: 7px 14px; border-radius: 999px; cursor: pointer; font: 500 14px "Inter", sans-serif; transition: all .12s; }
.tabs button:hover { color: var(--fg); border-color: rgba(255,255,255,.2); }
.tabs button[aria-selected="true"] { background: var(--light); border-color: var(--light); color: #1a1715; }
.op { border: 1px solid var(--line); border-radius: 12px; margin: 10px 0; background: var(--card); }
.op summary { display: flex; gap: 10px; align-items: baseline; padding: 12px 14px; cursor: pointer; flex-wrap: wrap; }
.op .m { font: 600 12px var(--mono); text-transform: uppercase; min-width: 52px; letter-spacing: .03em; }
.m.get { color: var(--get); } .m.post { color: var(--post); } .m.patch { color: var(--patch); } .m.delete { color: var(--delete); }
.op .path { font: 14px var(--mono); color: var(--fg); word-break: break-all; } .op .sum { color: var(--muted); font-size: 14px; }
.op .detail { padding: 0 14px 14px; font-size: 14px; }
.op table { border-collapse: collapse; width: 100%; } .op td, .op th { text-align: left; padding: 6px 8px; border-top: 1px solid var(--line); vertical-align: top; color: var(--muted); } .op th { color: var(--fg); }
.op .try { margin-top: 10px; display: flex; gap: 8px; flex-wrap: wrap; } .op .try input { flex: 1; min-width: 160px; }
input { font: inherit; padding: 9px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--card2); color: var(--fg); }
input::placeholder { color: var(--faint); }
input:focus { outline: none; border-color: var(--accent); }
label.key { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin: 10px 0 14px; color: var(--muted); } label.key input { flex: 1; min-width: 200px; max-width: 420px; }
button { font: inherit; }
form button, .try button { padding: 9px 16px; border: 1.5px solid var(--light); border-radius: 9px; background: var(--light); color: #1a1715; font-weight: 600; cursor: pointer; transition: background .15s, border-color .15s; }
form button:hover, .try button:hover { background: var(--light2); border-color: var(--light2); }
#sb-form label { display: flex; flex-direction: column; gap: 5px; max-width: 360px; margin-bottom: 12px; color: var(--muted); }
.msg { min-height: 1.4em; color: var(--delete); font-size: 14px; }
.muted { color: var(--muted); }
dl { display: grid; grid-template-columns: max-content 1fr; gap: 7px 16px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px; }
dt { color: var(--muted); } dd { margin: 0; font: 14px var(--mono); color: var(--fg); word-break: break-all; }
footer { text-align: center; padding: 28px; color: var(--muted); font-size: 14px; border-top: 1px solid var(--line); }
@media (max-width: 560px) { h1 { font-size: 26px; } dl { grid-template-columns: 1fr; } dd { margin-bottom: 6px; } nav { margin-left: 0; } }