/* Xtend annex pages — same design language as the landing (beige/navy,
   IBM Plex Mono labels, hairlines, one accent). Classes map 1:1 onto the
   existing page markup so the legal/support texts stay untouched. */

:root, [data-theme="light"] {
  color-scheme: light;
  --bg: #F4F2EC;
  --surface: #FBFAF7;
  --text: #1B1A17;
  --text-2: #57534A;
  --text-3: #8A857A;
  --hair: rgba(27, 26, 23, 0.14);
  --hair-strong: rgba(27, 26, 23, 0.26);
  --accent: #C75E1E;
}
[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0C0F14;
  --surface: #12161D;
  --text: #E8ECF2;
  --text-2: #AEB6C2;
  --text-3: #6E7683;
  --hair: rgba(232, 236, 242, 0.14);
  --hair-strong: rgba(232, 236, 242, 0.26);
  --accent: #FF8A4D;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font: 17px/1.7 -apple-system, BlinkMacSystemFont, "SF Pro Text", Segoe UI, sans-serif;
  -webkit-font-smoothing: antialiased;
}
.mono, .label, .effective, .credit-license, code, pre {
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 0.5px solid var(--hair);
}
.nav-inner {
  max-width: 880px; margin: 0 auto; padding: 16px 24px;
  display: flex; align-items: center;
}
.nav-inner a {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--text); text-decoration: none;
  font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 16px;
}
.nav-inner img { width: 28px; height: 28px; border-radius: 7px; }
.logo-x { font-weight: 600; }

.container { max-width: 880px; margin: 0 auto; padding: 72px 24px 96px; }

.label {
  display: block; font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--text-3); margin-bottom: 18px;
}
h1 {
  font-size: clamp(30px, 5vw, 42px); font-weight: 500; letter-spacing: -0.03em;
  line-height: 1.1; max-width: 20em; margin-bottom: 18px;
}
h1 em { font-style: italic; color: var(--accent); }
.lede { font-size: 18px; color: var(--text-2); max-width: 34em; margin-bottom: 12px; }
.effective { font-size: 12px; color: var(--text-3); margin-bottom: 44px; display: block; }

h2 {
  font-size: 22px; font-weight: 600; letter-spacing: -0.015em;
  margin: 52px 0 14px; padding-top: 26px; border-top: 0.5px solid var(--hair);
}
h3 { font-size: 17px; font-weight: 600; margin: 26px 0 8px; }
p { color: var(--text-2); margin: 12px 0; max-width: 44em; }
p b, p strong, li b, li strong { color: var(--text); }
ul, ol { margin: 12px 0 12px 1.2em; color: var(--text-2); max-width: 42em; }
li { margin: 8px 0; }
a { color: var(--accent); }
code {
  font-size: 0.85em; background: color-mix(in srgb, var(--text) 7%, transparent);
  border: 0.5px solid var(--hair); border-radius: 5px; padding: 1px 6px;
}
pre {
  background: var(--surface); border: 0.5px solid var(--hair); border-radius: 10px;
  padding: 18px 20px; overflow-x: auto; font-size: 13px; line-height: 1.6;
  color: var(--text-2); margin: 16px 0;
}
pre code { background: none; border: 0; padding: 0; }
hr { border: 0; border-top: 0.5px solid var(--hair); margin: 40px 0; }

/* Support CTAs */
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin: 22px 0 8px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 12px 20px;
  border-radius: 10px; font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 13.5px; text-decoration: none; border: 0.5px solid transparent;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { filter: brightness(1.06); }
.btn-ghost { color: var(--text); border-color: var(--hair-strong); }
.btn-ghost:hover { border-color: var(--text-3); }
.bug-template { margin-top: 8px; }

/* Acknowledgements credits */
.credit { padding: 20px 0; border-top: 0.5px solid var(--hair); max-width: 44em; }
.credit:first-of-type { border-top: 0; }
.credit-name { font-weight: 600; color: var(--text); display: inline; }
.credit-license {
  display: inline-block; margin-left: 10px; font-size: 11px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--accent);
  border: 0.5px solid color-mix(in srgb, var(--accent) 45%, transparent);
  border-radius: 5px; padding: 2px 7px; vertical-align: 2px;
}
.credit-desc { color: var(--text-2); margin-top: 6px; }

.back {
  display: inline-block; margin-top: 56px;
  font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 13.5px;
  color: var(--text-2); text-decoration: none;
}
.back:hover { color: var(--text); }

.site-footer { border-top: 0.5px solid var(--hair); }
.site-footer-inner {
  max-width: 880px; margin: 0 auto; padding: 28px 24px;
  display: flex; flex-wrap: wrap; gap: 10px 22px; align-items: center;
  font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 12px; color: var(--text-3);
}
.site-footer-links { display: flex; gap: 18px; margin-left: auto; }
.site-footer-links a { color: var(--text-3); text-decoration: none; }
.site-footer-links a:hover { color: var(--text); }