/* Privacy and Terms. Values mirror index.html, which mirrors OffTheHook/DesignSystem/DesignTokens.swift. */
@font-face { font-family: "Instrument Sans"; src: url("fonts/InstrumentSans-Regular.ttf") format("truetype"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Instrument Sans"; src: url("fonts/InstrumentSans-Medium.ttf") format("truetype"); font-weight: 500; font-display: swap; }
@font-face { font-family: "Instrument Sans"; src: url("fonts/InstrumentSans-SemiBold.ttf") format("truetype"); font-weight: 600; font-display: swap; }

:root {
  --sky: #050609;
  --sky-top: #171A36;
  --sky-mid: #0A0B14;
  --text: #F4F4F5;
  --text-2: #A1A1AA;
  --text-3: #8A8A93;
  --text-glass: #D4D4DC;
  --violet: #8B7CF6;
  --violet-light: #C9C2FF;
  --green-light: #9BE3AE;
  --nebula-violet: #5B47D6;
  --nebula-blue: #2F5BFF;
  --glass: rgba(22, 22, 30, 0.42);
  --glass-strong: rgba(22, 22, 30, 0.62);
  --stroke: rgba(255, 255, 255, 0.14);
  --stroke-soft: rgba(255, 255, 255, 0.08);
  --on-primary: #0C0D10;
  --r-panel: 24px;
  --r-row: 18px;
  --gutter: 20px;
  --max: 1120px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { background: var(--sky); overflow-x: clip; scroll-behavior: smooth; scroll-padding-top: 24px; }
body {
  position: relative; z-index: 0; background: var(--sky); color: var(--text);
  font-family: "Instrument Sans", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  font-size: 17px; line-height: 1.6; -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
:focus-visible { outline: 2px solid var(--violet-light); outline-offset: 3px; border-radius: 8px; }
.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }
.skip { position: absolute; left: var(--gutter); top: -60px; z-index: 5; padding: 10px 16px; border-radius: 999px;
  background: var(--text); color: var(--on-primary); font-weight: 600; text-decoration: none; }
.skip:focus { top: 12px; }

/* The sky scrolls with the page (no fixed layers: Safari would paint a band under its toolbar). */
.sky { position: absolute; inset: 0 0 auto; height: 100%; z-index: -2; pointer-events: none; overflow: hidden;
  background: url("img/stars.svg") 0 0 / 1200px auto repeat,
    radial-gradient(ellipse 900px 640px at 50% 0%, var(--sky-top), var(--sky-mid) 60%, var(--sky) 100%) top / 100% 900px no-repeat; }
.sky::before, .sky::after { content: ""; position: absolute; border-radius: 50%; filter: blur(90px); }
.sky::before { width: 460px; height: 460px; left: -220px; top: 40px; background: var(--nebula-violet); opacity: .22; }
.sky::after { width: 380px; height: 380px; right: -200px; top: 520px; background: var(--nebula-blue); opacity: .12; }

/* ---------- Nav ---------- */
.nav { padding: 14px var(--gutter) 0; }
.nav-inner { max-width: var(--max); margin: 0 auto; height: 56px; padding: 0 8px 0 14px; display: flex; align-items: center; justify-content: space-between;
  border-radius: 999px; background: var(--glass-strong); border: 1px solid var(--stroke-soft);
  -webkit-backdrop-filter: blur(24px); backdrop-filter: blur(24px); }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 17px; letter-spacing: -0.01em; text-decoration: none; }
.brand img { width: 30px; height: 30px; }
.nav-links { display: flex; align-items: center; gap: 24px; font-size: 15px; color: var(--text-2); }
.nav-links a { text-decoration: none; transition: color .2s; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text); }
.btn { display: inline-flex; align-items: center; justify-content: center; height: 40px; padding: 0 18px; border-radius: 999px;
  font: 600 15px/1 "Instrument Sans", sans-serif; background: var(--text); color: var(--on-primary) !important; }

/* ---------- Head ---------- */
.head { padding: 96px 0 56px; }
.head h1 { font-weight: 600; font-size: clamp(48px, 8vw, 96px); line-height: .98; letter-spacing: -0.045em; }
.head .lede { margin-top: 24px; max-width: 36ch; font-size: clamp(19px, 2vw, 22px); line-height: 1.45; color: var(--text-glass); }
.head .meta { margin-top: 20px; font-size: 14px; color: var(--text-3); }

/* ---------- The short version ---------- */
.short { padding: 28px; }
.short h2 { font-size: 15px; font-weight: 600; color: var(--text-2); letter-spacing: 0; margin-bottom: 18px; }
.short ul { list-style: none; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px 32px; }
.short li { display: grid; grid-template-columns: 22px 1fr; gap: 12px; font-size: 17px; line-height: 1.45; color: var(--text-glass); }
.short li strong { color: var(--text); font-weight: 600; }
.short svg { width: 22px; height: 22px; margin-top: 1px; color: var(--green-light); }
.glass-card { background: var(--glass); border: 1px solid var(--stroke); border-radius: var(--r-panel);
  -webkit-backdrop-filter: blur(24px); backdrop-filter: blur(24px); }

/* ---------- Body: contents on the left, text on the right ---------- */
.doc { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 64px; padding: 72px 0 120px; }
.toc { align-self: start; position: sticky; top: 24px; font-size: 14px; }
.toc summary { list-style: none; font-weight: 600; color: var(--text-2); margin-bottom: 14px; }
.toc summary::-webkit-details-marker { display: none; }
.toc ol { list-style: none; display: grid; gap: 2px; border-left: 1px solid var(--stroke-soft); }
.toc a { display: block; padding: 6px 0 6px 16px; margin-left: -1px; border-left: 1px solid transparent; color: var(--text-3); text-decoration: none; line-height: 1.35; }
.toc a:hover { color: var(--text); border-left-color: var(--violet-light); }

.prose { max-width: 68ch; }
.prose section + section { margin-top: 56px; }
.prose h2 { font-size: clamp(26px, 3vw, 32px); font-weight: 600; line-height: 1.15; letter-spacing: -0.025em; margin-bottom: 16px; }
.prose h3 { font-size: 19px; font-weight: 600; line-height: 1.3; margin: 28px 0 8px; }
.prose p, .prose li { color: var(--text-2); }
.prose p + p, .prose p + ul, .prose ul + p, .prose .rows + p, .prose .note + p { margin-top: 14px; }
.prose ul { padding-left: 20px; display: grid; gap: 8px; }
.prose li::marker { color: var(--text-3); }
.prose strong { color: var(--text); font-weight: 600; }
.prose a { color: var(--text); text-decoration: underline; text-decoration-color: rgba(255,255,255,.35); text-underline-offset: 3px; }
.prose a:hover { text-decoration-color: var(--text); }

/* Rows instead of tables, so nothing scrolls sideways on a phone. */
.rows { margin-top: 18px; border: 1px solid var(--stroke-soft); border-radius: var(--r-row); overflow: hidden; }
.row { display: grid; grid-template-columns: minmax(0, 13em) minmax(0, 1fr); gap: 4px 24px; padding: 16px 20px; }
.row + .row { border-top: 1px solid var(--stroke-soft); }
.row dt { color: var(--text); font-weight: 600; line-height: 1.4; }
.row dd { color: var(--text-2); line-height: 1.5; }
.row dd small { display: block; margin-top: 4px; font-size: 14px; color: var(--text-3); }

.note { margin-top: 18px; padding: 18px 20px; border-radius: var(--r-row); background: rgba(139, 124, 246, .10); border: 1px solid rgba(201, 194, 255, .22); }
.note p { color: var(--text-glass); }

/* ---------- Footer ---------- */
.foot { border-top: 1px solid var(--stroke-soft); }
.foot .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px 24px; padding-top: 28px; padding-bottom: max(32px, env(safe-area-inset-bottom));
  font-size: 14px; color: var(--text-3); }
.foot nav { display: flex; gap: 20px; flex-wrap: wrap; }
.foot a { text-decoration: none; } .foot a:hover { color: var(--text); }

@media (max-width: 960px) {
  .doc { grid-template-columns: 1fr; gap: 40px; padding-top: 48px; }
  .toc { position: static; padding: 18px 20px; border: 1px solid var(--stroke-soft); border-radius: var(--r-row); background: var(--glass); }
  .toc summary { margin: 0; cursor: pointer; display: flex; justify-content: space-between; align-items: center; color: var(--text); }
  .toc summary::after { content: ""; width: 8px; height: 8px; border-right: 1.6px solid var(--text-3); border-bottom: 1.6px solid var(--text-3); transform: rotate(45deg) translateY(-3px); }
  .toc[open] summary::after { transform: rotate(-135deg) translateY(-1px); }
  .toc[open] summary { margin-bottom: 14px; }
}
@media (max-width: 640px) {
  .head { padding: 64px 0 40px; }
  .short { padding: 22px 20px; }
  .short ul { grid-template-columns: 1fr; }
  .row { grid-template-columns: 1fr; padding: 14px 16px; }
  .nav-links a.hide-s { display: none; }
}
@media (min-width: 961px) { .toc summary { pointer-events: none; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }