/* LLCAR ui.css — layout, components, shell chrome. Sizes responsive. */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--sticky-header-inset, 160px); }
@media (max-width: 959px) { html { scroll-padding-bottom: 88px; } }
body {
  margin: 0;
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.55;
  color: var(--color-ink);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--color-primary-ink); }
a:hover { color: var(--color-primary); }
:focus-visible { outline: 3px solid rgba(14,122,59,.65); outline-offset: 2px; border-radius: 4px; }
.visually-hidden {
  position: absolute !important; width: 1px; height: 1px;
  clip: rect(0 0 0 0); clip-path: inset(50%); overflow: hidden; white-space: nowrap;
}
/* ---------- App layout (shell sidebar) ---------- */
body:not([data-public]) {
  min-height: 100vh;
}
.shell-main { display: block; }
@media (min-width: 960px) {
  body:not([data-public]) .app-sidebar {
    position: fixed; top: 0; bottom: 0; left: 0; width: var(--sidebar-w);
    background: var(--color-ink); color: #e8efe9; overflow-y: auto;
  }
  body:not([data-public]) .app-shell { margin-left: var(--sidebar-w); }
  body:not([data-public]) .app-bottomnav { display: none !important; }
}
@media (max-width: 959px) {
  body:not([data-public]) .app-sidebar { display: none !important; }
  body:not([data-public]) .app-content { padding-bottom: 76px; }
}
/* header */
#app-header {
  position: sticky; top: 0; z-index: 30;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-line);
}
.app-header-row {
  max-width: var(--app-max); margin: 0 auto; padding: 10px var(--space-4);
  display: flex; align-items: center; gap: var(--space-3); min-height: 60px;
}
.app-brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 800; font-size: 18px; color: var(--color-ink); text-decoration: none;
}
.app-brand img { height: 34px; width: auto; }
.app-header-spacer { flex: 1; }
.demo-note {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 14px; color: var(--color-muted);
  background: var(--color-bg); border: 1px solid var(--color-line);
  border-radius: 999px; padding: 4px 12px;
}
/* top nav (public + mobile menu button) */
#app-nav ul {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: var(--space-2);
}
#app-nav a {
  display: inline-flex; align-items: center; min-height: var(--control-h);
  padding: 0 12px; border-radius: var(--radius-sm);
  text-decoration: none; color: var(--color-ink); font-weight: 600; font-size: 16px;
}
#app-nav a:hover { background: var(--color-primary-soft); color: var(--color-primary-ink); }
#app-nav a[aria-current='page'] { background: var(--color-primary); color: #fff; }
.app-menubtn {
  display: none; align-items: center; justify-content: center;
  width: var(--control-h); height: var(--control-h);
  border: 1px solid var(--color-line); background: var(--color-surface);
  border-radius: var(--radius-sm); cursor: pointer;
}
@media (max-width: 959px) {
  #app-nav { display: none; }
  body.nav-open #app-nav {
    display: block; position: absolute; top: 100%; left: 0; right: 0;
    background: var(--color-surface); border-bottom: 1px solid var(--color-line);
    box-shadow: var(--shadow); padding: var(--space-3) var(--space-4) var(--space-4);
  }
  body.nav-open #app-nav ul { flex-direction: column; }
  .app-menubtn { display: inline-flex; }
}
/* sidebar nav */
.app-sidebar { padding: var(--space-4) var(--space-3); }
.app-sidebar .app-brand { color: #fff; padding: var(--space-2) var(--space-3) var(--space-4); }
.app-sidebar nav ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.app-sidebar nav a {
  display: flex; align-items: center; min-height: var(--control-h);
  padding: 0 12px; border-radius: var(--radius-sm);
  color: #cfe0d5; text-decoration: none; font-weight: 600;
}
.app-sidebar nav a:hover { background: rgba(255,255,255,.08); color: #fff; }
.app-sidebar nav a[aria-current='page'] { background: var(--color-primary); color: #fff; }
.app-sidebar .side-note { margin: var(--space-5) var(--space-2) 0; font-size: 14px; color: #9db3a5; }
/* bottom nav */
.app-bottomnav {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 40;
  background: var(--color-surface); border-top: 1px solid var(--color-line);
  display: flex; justify-content: space-around;
}
.app-bottomnav a {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 2px; min-height: 60px; text-decoration: none; color: var(--color-muted);
  font-size: 14px; font-weight: 600; padding: 4px 2px;
}
.app-bottomnav a[aria-current='page'] { color: var(--color-primary-ink); }
.app-bottomnav svg { width: 22px; height: 22px; }
/* main */
main#main { display: block; }
.app-content { max-width: var(--app-max); margin: 0 auto; padding: var(--space-5) var(--space-4); }
.prose, .section { max-width: var(--measure); }
.app-content > .section { max-width: none; }
/* footer */
#site-footer {
  border-top: 1px solid var(--color-line); background: var(--color-surface);
  margin-top: var(--space-7);
}
.footer-row {
  max-width: var(--app-max); margin: 0 auto; padding: var(--space-5) var(--space-4);
  display: flex; flex-wrap: wrap; gap: var(--space-4); align-items: baseline;
  color: var(--color-muted); font-size: 14px;
}
.footer-row nav { display: flex; flex-wrap: wrap; gap: var(--space-4); }
/* ---------- Typography blocks ---------- */
.page-head { margin: 0 0 var(--space-5); max-width: var(--measure); }
.eyebrow {
  font-size: 14px; font-weight: 700; letter-spacing: .06em;
  text-transform: uppercase; color: var(--color-primary); margin: 0 0 var(--space-2);
}
.lede { font-size: 18px; color: var(--color-muted); margin: 0 0 var(--space-3); max-width: var(--measure); }
h1, h2, h3 { line-height: 1.25; margin: 0 0 var(--space-3); }
h1 { font-size: clamp(26px, 4vw, 36px); }
h2 { font-size: clamp(21px, 3vw, 26px); }
h3 { font-size: 18px; }
.muted { color: var(--color-muted); }
.divider { border: 0; border-top: 1px solid var(--color-line); margin: var(--space-5) 0; }
.section { margin: 0 0 var(--space-6); }
/* ---------- Layout helpers ---------- */
.stack { display: grid; gap: var(--space-4); }
.cluster { display: flex; flex-wrap: wrap; gap: var(--space-3); align-items: center; }
.grid-2, .grid-3, .grid-4 { display: grid; gap: var(--space-4); }
@media (min-width: 700px) { .grid-2 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 700px) { .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 700px) { .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .grid-4 { grid-template-columns: repeat(4, 1fr); } }
/* ---------- Panels / stats / badges ---------- */
.panel {
  background: var(--color-surface); border: 1px solid var(--color-line);
  border-radius: var(--radius); padding: var(--space-5); box-shadow: var(--shadow);
}
.panel h2, .panel h3 { margin-top: 0; }
.hero {
  display: grid; gap: var(--space-5); align-items: center;
  background: var(--color-surface); border: 1px solid var(--color-line);
  border-radius: var(--radius); padding: var(--space-6); box-shadow: var(--shadow);
}
@media (min-width: 900px) { .hero { grid-template-columns: 3fr 2fr; } }
.hero-copy { max-width: var(--measure); }
.hero-art img { border-radius: var(--radius-sm); width: 100%; height: auto; }
.stat { display: grid; gap: 2px; padding: var(--space-3) 0; }
.stat-value { font-size: 26px; font-weight: 800; color: var(--color-ink); }
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--color-primary-soft); color: var(--color-primary-ink);
  border-radius: 999px; padding: 3px 10px; font-size: 14px; font-weight: 700;
}
.badge-warning { background: var(--color-warn-bg); color: var(--color-warn-ink); border: 1px solid var(--color-warn-line); }
.badge-neutral { background: var(--color-bg); color: var(--color-muted); border: 1px solid var(--color-line); }
/* ---------- Buttons / forms ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: var(--control-h); padding: 0 20px;
  background: var(--color-primary); color: #fff; border: 1px solid var(--color-primary);
  border-radius: var(--radius-sm); font: inherit; font-weight: 700;
  text-decoration: none; cursor: pointer;
}
.btn:hover { background: var(--color-primary-ink); border-color: var(--color-primary-ink); color: #fff; }
.btn-secondary {
  background: var(--color-surface); color: var(--color-primary-ink);
  border-color: var(--color-primary);
}
.btn-secondary:hover { background: var(--color-primary-soft); color: var(--color-primary-ink); }
.btn-quiet {
  background: transparent; color: var(--color-muted); border-color: var(--color-line);
}
.btn-quiet:hover { background: var(--color-bg); color: var(--color-ink); }
.field { display: grid; gap: 6px; }
.field > label { font-weight: 600; font-size: 14px; }
.field input, .field select, .field textarea {
  font: inherit; min-height: var(--control-h); padding: 8px 12px;
  border: 1px solid var(--color-line); border-radius: var(--radius-sm);
  background: var(--color-surface); color: var(--color-ink); width: 100%;
}
.field textarea { min-height: 96px; resize: vertical; }
.form-grid { display: grid; gap: var(--space-4); }
@media (min-width: 700px) { .form-grid { grid-template-columns: repeat(2, 1fr); } .form-grid .field-wide { grid-column: 1 / -1; } }
/* ---------- Notices ---------- */
.notice {
  background: var(--color-primary-soft); border: 1px solid var(--color-line);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-sm); padding: var(--space-3) var(--space-4);
  font-size: 16px;
}
.notice-warning {
  background: var(--color-warn-bg); border-color: var(--color-warn-line);
  border-left-color: #c99a2e; color: var(--color-warn-ink);
}
/* ---------- Tabs ---------- */
.tabs { display: flex; flex-wrap: wrap; gap: var(--space-2); border-bottom: 1px solid var(--color-line); }
.tab {
  display: inline-flex; align-items: center; min-height: var(--control-h);
  padding: 0 16px; border: 1px solid transparent; border-bottom: 0;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  background: transparent; color: var(--color-muted);
  font: inherit; font-weight: 600; text-decoration: none; cursor: pointer;
}
.tab:hover { color: var(--color-ink); background: var(--color-bg); }
.tab.active { background: var(--color-surface); color: var(--color-primary-ink); border-color: var(--color-line); }
/* ---------- Events / steps / lists ---------- */
.event-list { display: grid; gap: var(--space-3); list-style: none; margin: 0; padding: 0; }
.event {
  display: grid; grid-template-columns: 96px 1fr; gap: var(--space-3);
  background: var(--color-surface); border: 1px solid var(--color-line);
  border-radius: var(--radius-sm); padding: var(--space-3) var(--space-4);
}
.event-date { font-size: 14px; color: var(--color-muted); font-weight: 600; }
.event-body { display: grid; gap: 2px; }
.steps { display: grid; gap: var(--space-4); counter-reset: step; list-style: none; margin: 0; padding: 0; }
.step { position: relative; padding-left: 44px; }
.step::before {
  counter-increment: step; content: counter(step);
  position: absolute; left: 0; top: 0; width: 32px; height: 32px;
  display: grid; place-items: center; border-radius: 50%;
  background: var(--color-primary); color: #fff; font-weight: 800; font-size: 14px;
}
.check-list { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-2); }
.check-list li { padding-left: 28px; position: relative; }
.check-list li::before {
  content: ''; position: absolute; left: 0; top: 5px; width: 16px; height: 16px;
  border-radius: 50%; background: var(--color-primary-soft);
  box-shadow: inset 0 0 0 3px var(--color-primary);
}
.link-list { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-2); }
.link-list a { font-weight: 600; }
/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; background: var(--color-surface); border: 1px solid var(--color-line); border-radius: var(--radius-sm); }
table { border-collapse: collapse; width: 100%; font-size: 16px; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--color-line-soft); }
th { font-size: 14px; text-transform: uppercase; letter-spacing: .04em; color: var(--color-muted); }
tr:last-child td { border-bottom: 0; }
/* ---------- Charts ---------- */
.chart-frame { background: var(--color-surface); border: 1px solid var(--color-line); border-radius: var(--radius); padding: var(--space-4); box-shadow: var(--shadow); }
.chart-toolbar { display: flex; flex-wrap: wrap; gap: var(--space-2); align-items: center; margin-bottom: var(--space-3); }
.chart-legend { display: flex; flex-wrap: wrap; gap: var(--space-4); font-size: 14px; color: var(--color-muted); margin-top: var(--space-2); }
.chart-legend span { display: inline-flex; align-items: center; gap: 6px; }
.chart-legend i { width: 12px; height: 12px; border-radius: 3px; display: inline-block; }
.chart-summary { font-size: 14px; color: var(--color-muted); margin-top: var(--space-2); }
/* ---------- Misc ---------- */
.empty-state {
  display: grid; gap: var(--space-3); justify-items: start;
  padding: var(--space-6); text-align: left;
  background: var(--color-surface); border: 1px dashed var(--color-line);
  border-radius: var(--radius); color: var(--color-muted);
}
.price { font-size: 32px; font-weight: 800; }
.price small { font-size: 14px; font-weight: 600; color: var(--color-muted); }
/* toast */
.llcar-toast {
  position: fixed; left: 50%; bottom: 84px; transform: translateX(-50%);
  background: var(--color-ink); color: #fff; border-radius: var(--radius-sm);
  padding: 10px 18px; font-size: 16px; box-shadow: var(--shadow); z-index: 90;
  max-width: min(92vw, 480px);
}
@media (min-width: 960px) { .llcar-toast { bottom: 24px; } }

/* Integration: compact common navigation, full-width sections, safe mobile header. */
body:not([data-public]) #app-nav {display:none}
body:not([data-public]).nav-open #app-nav {display:block}
#app-nav {max-width:var(--app-max);margin:auto;padding:0 24px}
.app-content {width:100%;min-width:0}
.app-content > .section {max-width:none}
.app-header-row {flex-wrap:wrap}
.app-header-row select {max-width:100%;min-width:0}
@media(max-width:600px){.demo-note{order:5;width:100%;border:0;padding:0;background:none}.app-header-row{gap:8px}.app-header-row select{order:4;width:100%}.chart-frame{padding:12px}.app-content{padding:24px 16px 90px}.event{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* Native hidden state must win over layout utility display rules. */
[hidden]{display:none!important}
#machine-data > .section{max-width:none}
.event button,.empty-state button{font:inherit;font-size:16px;min-height:44px;padding:8px 12px;border:1px solid var(--color-line);border-radius:6px;background:var(--color-surface);color:var(--color-primary-ink);cursor:pointer}
.knowledge-article > summary{font-size:20px;font-weight:700;line-height:1.4;min-height:44px;padding:6px 0}
@media(min-width:1100px){#machine-data .grid-2{grid-template-columns:repeat(3,minmax(0,1fr))}}
/* One compact event filter preserves every category on small screens. */
#filter-tabs{display:flex;align-items:center;flex-wrap:wrap;gap:12px}
#filter-select{font:inherit;min-height:44px;width:min(100%,360px);padding:8px 12px;background:var(--color-surface);border:1px solid var(--color-line);border-radius:var(--radius-sm);color:var(--color-ink)}