/*
 * ROBOT.md design system — shared stylesheet
 * Paper / ink / terracotta palette · Inter Tight + Fraunces + JetBrains Mono
 * Sourced from site/index.html (canonical) + site/managed-agents/index.html
 *
 * Include BEFORE page-specific <style> blocks.
 * Google Fonts <link> must still be in each page's <head>.
 */

/* ============================================================
   DESIGN TOKENS
   ============================================================ */
:root {
  --paper:      #F4EFE6;
  --paper-2:    #ECE5D6;
  --paper-3:    #DFD5BF;
  --ink:        #111110;
  --ink-2:      #2A2825;
  --ink-3:      #5A574F;
  --ink-4:      #8A8578;
  --rule:       #1d1c1a;
  --accent:     #B34A2A;   /* terracotta — do NOT use for body text */
  --accent-ink: #5A1F0E;   /* dark terracotta — AA safe for body text */
  --accent-wash:#EBD9C9;
  --ok:         #2F6B3E;
  --danger:     #9B2D20;

  --sans:  'Inter Tight', system-ui, -apple-system, Helvetica, Arial, sans-serif;
  --mono:  'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --serif: 'Fraunces', Georgia, serif;

  --maxw: 1240px;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box }
html, body { margin: 0; padding: 0 }

html {
  background: var(--paper);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  font-feature-settings: "ss01", "cv11";
  min-height: 100vh;
}

/* subtle paper grain */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    radial-gradient(rgba(0,0,0,.035) 1px, transparent 1px),
    radial-gradient(rgba(0,0,0,.025) 1px, transparent 1px);
  background-size: 3px 3px, 7px 7px;
  background-position: 0 0, 1px 2px;
  mix-blend-mode: multiply;
  opacity: .55;
}

a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}
a:hover { color: var(--accent); border-color: var(--accent) }

/* ============================================================
   LAYOUT HELPERS
   ============================================================ */
.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 32px;
  position: relative;
  z-index: 1;
}
@media (max-width: 720px) { .wrap { padding: 0 16px } }

/* ============================================================
   SITE NAV
   ============================================================ */
.site-nav {
  border-bottom: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .08em;
  position: sticky;
  top: 0;
  background: var(--paper);
  z-index: 100;
}

.site-nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  gap: 24px;
  flex-wrap: wrap;
}

.site-nav .wordmark {
  font-family: var(--sans);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -.03em;
  border: none;
}
.site-nav .wordmark .dot { color: var(--accent) }
.site-nav .wordmark .md  { font-family: var(--serif); font-weight: 400; font-style: italic; color: var(--ink-3) }

.site-nav nav {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
}
.site-nav nav a { border: none; opacity: .75 }
.site-nav nav a:hover { opacity: 1 }
.site-nav nav a.current { opacity: 1; color: var(--accent); border-bottom: 1px solid var(--accent) }

.site-nav .nav-cta {
  font-family: var(--mono);
  font-size: 11px;
  background: var(--ink);
  color: var(--paper);
  padding: 5px 12px;
  border-radius: 2px;
  border: none;
  letter-spacing: .08em;
}
.site-nav .nav-cta:hover { background: var(--accent); color: var(--paper) }

@media (max-width: 900px) {
  .site-nav nav { gap: 14px }
  .site-nav .nav-cta { display: none }
}
@media (max-width: 600px) {
  .site-nav-inner { flex-direction: column; align-items: flex-start; gap: 8px }
  .site-nav nav { gap: 10px }
}

/* ============================================================
   PAGE HEADER (secondary pages)
   ============================================================ */
.page-header {
  padding: 56px 0 48px;
  border-bottom: 3px double var(--rule);
}

.page-eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.page-eyebrow .rule-line {
  flex: 1;
  height: 1px;
  background: var(--rule);
  opacity: .5;
}

.page-heading {
  font-family: var(--sans);
  font-weight: 300;
  font-size: clamp(36px, 5vw, 66px);
  line-height: 1.06;
  letter-spacing: -0.026em;
  text-wrap: balance;
  margin: 0 0 20px;
  color: var(--ink);
}
.page-heading b { font-weight: 700 }
.page-heading em {
  font-style: italic;
  font-family: var(--serif);
  font-weight: 400;
  color: var(--accent);
}

.page-lede {
  font-family: var(--serif);
  font-style: italic;
  font-size: 20px;
  color: var(--ink-2);
  max-width: 680px;
  margin: 0;
  line-height: 1.5;
  text-wrap: pretty;
}

/* ============================================================
   SECTIONS
   ============================================================ */
.sec {
  padding: 64px 0;
  border-bottom: 1px solid var(--rule);
  position: relative;
}

.sec-eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.sec-eyebrow .rule-line {
  flex: 1;
  height: 1px;
  background: var(--rule);
  opacity: .5;
}

.sec-title {
  font-family: var(--sans);
  font-weight: 600;
  font-size: clamp(24px, 3.2vw, 40px);
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0 0 12px;
  text-wrap: balance;
}

.sec-lede {
  font-family: var(--serif);
  font-style: italic;
  font-size: 19px;
  color: var(--ink-2);
  max-width: 680px;
  margin: 0;
  text-wrap: pretty;
  line-height: 1.5;
}

/* ============================================================
   INSTALL BLOCK (shared across agent pages + MCP page)
   ============================================================ */
.install-block {
  display: flex;
  align-items: stretch;
  max-width: 640px;
  margin-bottom: 24px;
  border: 1px solid var(--rule);
  background: var(--ink);
  border-radius: 3px;
  overflow: hidden;
  box-shadow: 5px 5px 0 var(--rule);
}

.install-block pre {
  margin: 0;
  padding: 14px 20px;
  font-family: var(--mono);
  font-size: 14px;
  color: #E8E3D3;
  flex: 1;
  overflow-x: auto;
  white-space: pre;
}

.install-block pre .prompt { color: var(--accent) }
.install-block pre .cmd   { color: #fff; font-weight: 500 }

.install-copy-btn {
  background: none;
  border: none;
  border-left: 1px solid #2a2825;
  color: #8a857a;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: 0 14px;
  cursor: pointer;
  flex-shrink: 0;
  transition: color .15s, background .15s;
}
.install-copy-btn:hover { color: var(--paper); background: #2a2825 }
.install-copy-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px }

/* ============================================================
   STATUS BADGES (shared)
   ============================================================ */
.badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
  padding: 3px 9px;
  border-radius: 2px;
}
.badge-live    { background: var(--ok); color: var(--paper) }
.badge-wip     { background: var(--paper-3); color: var(--ink-2); border: 1px solid var(--rule) }
.badge-prerel  { background: var(--accent-wash); color: var(--accent-ink); border: 1px solid var(--accent) }

/* ============================================================
   FOOTER
   ============================================================ */
footer.foot {
  padding: 28px 0 44px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-3);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  border-top: 1px solid var(--rule);
}
footer.foot a { color: var(--ink-3) }
footer.foot a:hover { color: var(--accent) }
