/* Praman Labs — shared site stylesheet.
   Derived from coine-ibm-design-system tokens. Light-only, institutional.
   --color-primary is a text/accent color, never a fill. */

@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap");
@import url("https://fonts.googleapis.com/css2?family=Space+Mono:wght@400;700&display=swap");

:root {
  /* Surfaces */
  --color-bg: #FFFFFF;
  --color-bg-subtle: #F4F6F8;
  /* Primary (institutional blue) */
  --color-primary: #0C447C;
  --color-primary-mid: #185FA5;
  --color-primary-tint: #E6F1FB;
  /* Text */
  --color-text: #2C2C2A;
  --color-text-muted: #5F5E5A;
  /* Line */
  --color-border: #E2E4E7;
  --border-strong: #CDD2D8;
  /* Semantic */
  --color-success: #1E8E5A;
  --color-warning: #B7791F;
  --color-danger: #B3261E;
  --color-success-tint: #E6F4EC;
  --color-warning-tint: #FBF2E3;
  --color-danger-tint: #FBEAE9;
  /* Brand mark only */
  --color-brand-blue: #3B82F6;
  --color-brand-ink: #1E293B;
  /* Type */
  --font-headline: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Helvetica, Arial, sans-serif;
  --font-mono: "Space Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  /* Elevation */
  --shadow-raised: 0 1px 2px rgba(12, 68, 124, .06);
  --shadow-overlay: 0 8px 24px rgba(12, 68, 124, .12);
  --focus-ring: 0 0 0 3px rgba(24, 95, 165, .20);
  --ease-out: cubic-bezier(.22, .61, .36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

/* ── Typography ─────────────────────────────────────────── */
h1, h2, h3, h4 { font-family: var(--font-headline); color: var(--color-primary); font-weight: 600; line-height: 1.25; }
h1 { font-size: 34px; letter-spacing: -0.5px; }
h2 { font-size: 23px; }
h3 { font-size: 18px; }
p  { max-width: 62ch; }
a  { color: var(--color-primary-mid); text-decoration: none; }
a:hover { color: var(--color-primary); }
.muted { color: var(--color-text-muted); }
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  text-transform: lowercase;
  color: var(--color-primary-mid);
  display: block;
  margin-bottom: 10px;
}
.mono, code, .num { font-family: var(--font-mono); }
code { font-size: 13px; background: var(--color-bg-subtle); border: 0.5px solid var(--color-border); border-radius: 6px; padding: 1px 6px; }

/* ── Layout ─────────────────────────────────────────────── */
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
section { padding: 56px 0; }
section.subtle { background: var(--color-bg-subtle); }
.section-head { margin-bottom: 34px; }
.section-head p { color: var(--color-text-muted); margin-top: 8px; }

/* ── Top navigation ─────────────────────────────────────── */
.site-nav {
  position: sticky; top: 0; z-index: 50;
  background: var(--color-bg);
  border-bottom: 0.5px solid var(--color-border);
}
.site-nav .wrap { display: flex; align-items: center; height: 60px; gap: 26px; }
.site-nav .brand img { height: 26px; display: block; }
.site-nav .links { display: flex; gap: 20px; margin-left: auto; align-items: center; }
.site-nav .links a { font-size: 14px; font-weight: 500; color: var(--color-text); transition: color 120ms var(--ease-out); }
.site-nav .links a:hover { color: var(--color-primary-mid); }
.site-nav .links a.active { color: var(--color-primary); }

/* ── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-block; border-radius: 6px; font-size: 14px; font-weight: 600;
  font-family: var(--font-headline); padding: 9px 18px; cursor: pointer;
  border: 1px solid transparent; transition: background 120ms var(--ease-out), color 120ms var(--ease-out), border-color 120ms var(--ease-out);
}
.btn:focus-visible { outline: none; box-shadow: var(--focus-ring); border-color: var(--color-primary-mid); }
.btn-primary { background: var(--color-primary-mid); color: #fff; }
.btn-primary:hover { background: var(--color-primary); color: #fff; }
.btn-secondary { background: var(--color-bg); color: var(--color-primary-mid); border-color: var(--border-strong); }
.btn-secondary:hover { background: var(--color-bg-subtle); color: var(--color-primary); }
.btn-ghost { background: transparent; color: var(--color-primary-mid); }
.btn-ghost:hover { background: var(--color-primary-tint); color: var(--color-primary); }

/* ── Cards ──────────────────────────────────────────────── */
.card {
  background: var(--color-bg-subtle);
  border: 0.5px solid var(--color-border);
  border-radius: 12px;
  padding: 20px;
}
.card.generous { padding: 28px; }
.card.tinted { background: var(--color-primary-tint); }
.card.on-subtle { background: var(--color-bg); }
.card h3 { margin-bottom: 8px; }
.card p { font-size: 14px; color: var(--color-text-muted); }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }

/* ── Pills / badges ─────────────────────────────────────── */
.pill {
  display: inline-block; border-radius: 20px; padding: 5px 12px;
  font-size: 12px; font-weight: 600; font-family: var(--font-headline);
  background: var(--color-primary-tint); color: var(--color-primary);
}
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  border-radius: 6px; padding: 3px 10px; font-size: 12px; font-weight: 600;
}
.badge-live    { background: var(--color-success-tint); color: var(--color-success); }
.badge-early   { background: var(--color-warning-tint); color: var(--color-warning); }
.badge-roadmap { background: var(--color-bg-subtle); color: var(--color-text-muted); border: 0.5px solid var(--color-border); }

/* ── Data callouts ──────────────────────────────────────── */
.callout-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 14px; }
.callout { background: var(--color-bg-subtle); border: 0.5px solid var(--color-border); border-radius: 12px; padding: 20px; }
.callout .value { font-family: var(--font-mono); font-size: 26px; font-weight: 700; color: var(--color-primary); }
.callout .label { font-size: 13px; font-weight: 600; color: var(--color-text); margin-top: 4px; }
.callout .caption { font-size: 12px; color: var(--color-text-muted); margin-top: 2px; }

/* ── Bullet rows with icon chips ────────────────────────── */
.bullet-list { display: flex; flex-direction: column; gap: 14px; }
.bullet-row { display: flex; align-items: flex-start; gap: 14px; font-size: 14px; }
.icon-chip {
  flex: none; width: 22px; height: 22px; border-radius: 6px;
  background: var(--color-primary-tint); color: var(--color-primary-mid);
  display: inline-flex; align-items: center; justify-content: center;
}
.icon-chip svg { width: 13px; height: 13px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* ── Tables ─────────────────────────────────────────────── */
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th {
  font-family: var(--font-mono); font-size: 12px; font-weight: 400; letter-spacing: 0.02em;
  text-transform: lowercase; text-align: left; color: var(--color-text-muted);
  background: var(--color-bg-subtle); padding: 9px 12px;
  border-bottom: 0.5px solid var(--color-border);
}
td { padding: 10px 12px; border-bottom: 0.5px solid var(--color-border); vertical-align: top; }
.table-scroll { overflow-x: auto; border: 0.5px solid var(--color-border); border-radius: 12px; }
.table-scroll table { min-width: 640px; }
.table-scroll th:first-child, .table-scroll td:first-child { padding-left: 16px; }

/* ── Code blocks ────────────────────────────────────────── */
pre {
  background: var(--color-bg-subtle); border: 0.5px solid var(--color-border);
  border-radius: 12px; padding: 20px; overflow-x: auto;
  font-family: var(--font-mono); font-size: 13px; line-height: 1.55; color: var(--color-text);
}
pre code { background: none; border: none; padding: 0; }

/* ── Inputs ─────────────────────────────────────────────── */
.input {
  width: 100%; padding: 10px 14px; font-size: 15px; font-family: var(--font-body);
  color: var(--color-text); background: var(--color-bg);
  border: 1px solid var(--border-strong); border-radius: 8px;
  transition: border-color 120ms var(--ease-out), box-shadow 120ms var(--ease-out);
}
.input:focus { outline: none; border-color: var(--color-primary-mid); box-shadow: var(--focus-ring); }
.input::placeholder { color: var(--color-text-muted); }

/* ── FAQ details ────────────────────────────────────────── */
details { border-bottom: 0.5px solid var(--color-border); padding: 14px 0; }
details summary { cursor: pointer; font-weight: 600; font-family: var(--font-headline); font-size: 15px; color: var(--color-text); list-style: none; display: flex; justify-content: space-between; align-items: center; }
details summary::-webkit-details-marker { display: none; }
details summary::after { content: "+"; font-family: var(--font-mono); color: var(--color-primary-mid); }
details[open] summary::after { content: "\2212"; }
details[open] summary { color: var(--color-primary); }
details .answer { padding-top: 10px; font-size: 14px; color: var(--color-text-muted); max-width: 68ch; }

/* ── Footer ─────────────────────────────────────────────── */
.site-footer { border-top: 0.5px solid var(--color-border); background: var(--color-bg-subtle); padding: 44px 0 28px; margin-top: 56px; }
.site-footer .cols { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 28px; margin-bottom: 30px; }
.site-footer h4 { font-size: 13px; color: var(--color-text); margin-bottom: 12px; }
.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: 8px; }
.site-footer a { font-size: 13px; color: var(--color-text-muted); }
.site-footer a:hover { color: var(--color-primary-mid); }
.site-footer .brand-blurb { font-size: 13px; color: var(--color-text-muted); max-width: 34ch; margin-top: 12px; }
.site-footer .legal { border-top: 0.5px solid var(--color-border); padding-top: 18px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: 12px; color: var(--color-text-muted); }
.site-footer .legal a { font-size: 12px; }

/* ── Motion ─────────────────────────────────────────────── */
@media (prefers-reduced-motion: no-preference) {
  .rise { animation: rise 400ms var(--ease-out) both; }
  @keyframes rise { from { transform: translateY(8px); } to { transform: translateY(0); } }
}

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .site-footer .cols { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 620px) {
  h1 { font-size: 28px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .site-nav .links { gap: 12px; }
  .site-nav .links a.nav-secondary { display: none; }
  section { padding: 40px 0; }
}