/* Help Somebody — Context. Black & white, minimal. Matches site v4. */

:root {
  --ink: #0B0B0B;
  --ink-soft: #4A4A4A;
  --ink-faint: #8C8C8C;
  --line: #E2E2E2;
  --line-dark: #2A2A2A;
  --paper: #FFFFFF;
  --paper-warm: #F6F5F3;
  --pad: clamp(20px, 6vw, 96px);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Inter Tight', -apple-system, Helvetica, Arial, sans-serif;
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }

.eyebrow {
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
  font-size: 10px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 22px;
}

h1, h2, h3 { font-weight: 500; letter-spacing: -.03em; line-height: 1.04; margin: 0; }

/* ---------- nav ---------- */

.nav {
  position: sticky; top: 0; z-index: 30;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px var(--pad);
  background: rgba(255,255,255,.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.mark {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px; letter-spacing: .14em; text-transform: uppercase;
}

.nav nav { display: flex; align-items: center; gap: 4px; }

.nav nav a {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--ink-soft);
  padding: 12px 10px;
  min-height: 44px; display: flex; align-items: center;
}

.nav nav a:hover { color: var(--ink); }

.nav-cta {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--ink); background: none;
  border: 1px solid var(--ink);
  padding: 12px 14px; min-height: 44px;
  cursor: pointer;
  transition: background .2s ease, color .2s ease;
}

.nav-cta:hover { background: var(--ink); color: #fff; }

.nav-cta { white-space: nowrap; }
.cta-full { display: none; }

@media (min-width: 620px) {
  .cta-full { display: inline; }
  .cta-short { display: none; }
}

@media (max-width: 619px) {
  .nav { padding-left: 16px; padding-right: 16px; gap: 8px; }
  .mark { font-size: 11px; letter-spacing: .1em; }
  .nav nav a { padding: 12px 7px; font-size: 10px; }
  .nav-cta { padding: 12px 11px; font-size: 10px; }
}

/* ---------- hero ---------- */

.hero {
  padding: clamp(44px, 9vw, 104px) var(--pad) clamp(28px, 5vw, 52px);
  border-bottom: 1px solid var(--line);
}

.hero h1 {
  font-size: clamp(52px, 15vw, 148px);
  margin: 0 0 22px;
}

.lede {
  font-size: clamp(17px, 2.2vw, 22px);
  color: var(--ink-soft);
  max-width: 46ch;
  margin: 0 0 30px;
  font-weight: 300;
}

.meta-row {
  display: flex; flex-wrap: wrap; gap: 8px 22px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px; letter-spacing: .16em; text-transform: uppercase;
  color: var(--ink-faint);
}

.meta-row a { border-bottom: 1px solid var(--line); color: var(--ink); }
.meta-row a:hover { border-color: var(--ink); }

/* ---------- shell ---------- */

.shell {
  display: grid;
  grid-template-columns: 1fr;
}

/* ---------- sidebar ---------- */

.side {
  border-bottom: 1px solid var(--line);
  padding: 20px var(--pad) 26px;
}

.search-wrap { position: relative; margin-bottom: 18px; }

.search-wrap input {
  width: 100%;
  appearance: none;
  background: var(--paper-warm);
  border: 1px solid var(--line);
  color: var(--ink);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  letter-spacing: .04em;
  padding: 14px 44px 14px 14px;
  min-height: 46px;
  border-radius: 0;
}

.search-wrap input:focus { outline: none; border-color: var(--ink); background: #fff; }
.search-wrap input::placeholder { color: var(--ink-faint); }

.search-wrap kbd {
  position: absolute; right: 12px; top: 50%; transform: translateY(-50%);
  font-family: 'IBM Plex Mono', monospace; font-size: 10px;
  color: var(--ink-faint);
  border: 1px solid var(--line); background: #fff;
  padding: 3px 7px;
  pointer-events: none;
}

.toc { display: flex; flex-direction: column; }

.toc a {
  display: flex; align-items: baseline; gap: 12px;
  padding: 11px 0;
  border-top: 1px solid var(--line);
  font-size: 14px;
  color: var(--ink-soft);
  transition: color .16s ease, padding-left .16s ease;
}

.toc a:last-child { border-bottom: 1px solid var(--line); }
.toc a:hover { color: var(--ink); padding-left: 6px; }
.toc a.on { color: var(--ink); font-weight: 500; }

.toc a .n {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px; color: var(--ink-faint);
  letter-spacing: .1em;
  min-width: 22px;
}

.toc a.hide { display: none; }

/* ---------- docs ---------- */

.docs { padding: 0 var(--pad) clamp(60px, 10vw, 120px); }

.doc {
  padding: clamp(38px, 6vw, 64px) 0;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 70px;
}

.doc.hide { display: none; }

.doc-head {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 18px;
  margin-bottom: 26px;
}

.doc h2 { font-size: clamp(26px, 4.4vw, 42px); max-width: 22ch; }

.doc-num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px; letter-spacing: .2em; color: var(--ink-faint);
  padding-top: 8px; white-space: nowrap;
}

.doc .sub {
  color: var(--ink-soft);
  font-size: 16px;
  max-width: 62ch;
  margin: -14px 0 26px;
  font-weight: 300;
}

.doc p { max-width: 68ch; margin: 0 0 16px; }

.doc ul { max-width: 68ch; margin: 0 0 18px; padding-left: 0; list-style: none; }

.doc li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
}

.doc li::before {
  content: "";
  position: absolute; left: 0; top: .72em;
  width: 10px; height: 1px; background: var(--ink);
}

.doc li strong { font-weight: 500; }

.doc h3 {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px; letter-spacing: .2em; text-transform: uppercase;
  color: var(--ink-faint);
  font-weight: 400;
  margin: 34px 0 14px;
  letter-spacing: .2em;
}

.doc a.link { border-bottom: 1px solid var(--line); }
.doc a.link:hover { border-color: var(--ink); }

.pull {
  border-left: 1px solid var(--ink);
  padding: 4px 0 4px 20px;
  margin: 26px 0;
  font-size: clamp(19px, 2.6vw, 26px);
  font-weight: 300;
  line-height: 1.32;
  letter-spacing: -.02em;
  max-width: 34ch;
}

.kv { border-top: 1px solid var(--line); margin: 0 0 20px; max-width: 68ch; }

.kv .row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.kv .k {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px; letter-spacing: .16em; text-transform: uppercase;
  color: var(--ink-faint);
}

.kv .v { font-size: 15px; }

.tag {
  display: inline-block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 9px; letter-spacing: .16em; text-transform: uppercase;
  border: 1px solid var(--line);
  padding: 3px 8px;
  color: var(--ink-soft);
  margin-right: 6px;
}

.tag.open { border-color: var(--ink); color: var(--ink); }

.copy {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 9px; letter-spacing: .16em; text-transform: uppercase;
  background: none; border: 1px solid var(--line); color: var(--ink-soft);
  padding: 9px 11px; cursor: pointer;
  transition: border-color .18s ease, color .18s ease;
}

.copy:hover { border-color: var(--ink); color: var(--ink); }

.empty {
  padding: 60px 0;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px; letter-spacing: .1em;
  color: var(--ink-faint);
}

.empty.hide { display: none; }

/* ---------- footer ---------- */

.foot {
  border-top: 1px solid var(--line);
  padding: clamp(34px, 6vw, 62px) var(--pad);
  color: var(--ink-soft);
  font-size: 14px;
}

.foot a { border-bottom: 1px solid var(--line); }
.foot a:hover { border-color: var(--ink); }

/* ---------- toast ---------- */

.toast {
  position: fixed; left: 50%; bottom: 26px;
  transform: translate(-50%, 18px);
  background: var(--ink); color: #fff;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px; letter-spacing: .2em; text-transform: uppercase;
  padding: 12px 18px;
  opacity: 0; pointer-events: none;
  transition: opacity .22s ease, transform .22s ease;
  z-index: 50;
}

.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- reveal ---------- */

.doc { opacity: 0; transform: translateY(10px); transition: opacity .5s ease, transform .5s ease; }
.doc.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .doc { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- desktop ---------- */

@media (min-width: 900px) {
  .shell { grid-template-columns: 300px 1fr; align-items: start; }

  .side {
    position: sticky; top: 61px;
    border-bottom: none;
    border-right: 1px solid var(--line);
    padding: 34px 34px 40px var(--pad);
    max-height: calc(100vh - 61px);
    overflow-y: auto;
  }

  .docs { padding: 0 var(--pad) 140px 48px; }

  .kv .row { grid-template-columns: 200px 1fr; gap: 20px; align-items: baseline; }

  .doc h2 { font-size: clamp(30px, 3.2vw, 44px); }
}