/* =========================================================================
   Proof ledger: audience hubs and engagement-led service pages.
   Templates: page-recruitment-marketing-for-*.php, page-marketing-engineering.php,
   page-performance-marketing.php, page-bespoke-tools.php → parts/hub.php.
   Tokens come from patterns.css (--shq-*). Zero radius, hairlines carry
   structure, chart-pen red is reserved for the single result figure per row.
   Motion: one authored moment, the result rule tracing left to right
   (assets/js/hub.js). Everything is visible without JS.
   ========================================================================= */

/* ---------- Page head: H1 left, answer and action right ---------- */
.shq-hub-head{ padding:48px 0 52px; }
.shq-hub-head__grid{
  display:grid; grid-template-columns:minmax(0, 1.25fr) minmax(0, 1fr);
  gap:56px; align-items:end;
}
.shq-hub-head .shq-page-title{ margin:0; max-width:18ch; }
.shq-hub-head__side .shq-sec-intro{ margin-top:0; }
.shq-hub-head .shq-pagehead-ctas{ margin-top:28px; }

/* ---------- The ledger ---------- */
.shq-ledger-s{ padding:72px 0 56px; }
.shq-ledger-s > .shq-wrap > .shq-sec-h{ margin-bottom:40px; }

.shq-ledger{ border-bottom:1px solid var(--shq-rule); }

.shq-ledger__cols,
.shq-ledger__row{
  display:grid;
  grid-template-columns:minmax(0, 1.15fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, .95fr);
  column-gap:32px;
}

.shq-ledger__cols{
  padding:0 0 12px; border-bottom:1px solid var(--shq-ink);
  color:var(--shq-graphite);
}

.shq-ledger__row{ position:relative; padding:28px 0 30px; border-top:1px solid var(--shq-rule); }
.shq-ledger__row:first-of-type{ border-top:0; }

.shq-ledger__problem{
  font-family:var(--shq-display);
  font-size:clamp(1.25rem, 1.9vw, 1.5rem);
  font-weight:700; font-variation-settings:"wdth" 96;
  line-height:1.15; letter-spacing:-.018em; text-wrap:balance;
  margin:0; color:var(--shq-ink);
}

/* dl flattens into the row grid so its 3 cells sit in columns 2 to 4. */
.shq-ledger__cells{ display:contents; }
.shq-ledger__cell{ margin:0; }
.shq-ledger__cell dt{
  /* Column labels repeat per cell for screen readers and small screens;
     on wide screens the header row carries them visually. */
  position:absolute; width:1px; height:1px; overflow:hidden; clip-path:inset(50%); white-space:nowrap;
}
.shq-ledger__cell dd{ margin:0; font-size:16px; line-height:1.55; color:var(--shq-ink-soft); max-width:36ch; }

.shq-ledger__result{ position:relative; padding-top:14px; }
.shq-ledger__result::before{
  /* The chart-pen rule. Visible by default; hub.js arms and traces it. */
  content:""; position:absolute; left:0; right:0; top:0; height:2px;
  background:var(--shq-trace);
  transform-origin:0 50%;
}
.shq-ledger__result.is-plain::before{ background:var(--shq-ink); height:1px; }

.shq-ledger__figure{
  display:block;
  font-family:var(--shq-data);
  font-size:clamp(1.75rem, 2.6vw, 2.375rem);
  font-weight:500; line-height:1; letter-spacing:-.03em;
  font-variant-numeric:tabular-nums lining-nums;
  color:var(--shq-trace);
  margin:0 0 10px;
}
.shq-ledger__outcome{ display:block; font-size:15px; line-height:1.5; color:var(--shq-ink); }
.shq-ledger__result.is-plain .shq-ledger__outcome{ font-size:16px; }

.shq-ledger__links{
  grid-column:2 / -1;
  display:flex; flex-wrap:wrap; gap:8px 24px;
  list-style:none; margin:14px 0 0; padding:0;
  font-size:15px;
}

.shq-ledger__note{
  margin:22px 0 0; max-width:62ch;
  font-size:14.5px; line-height:1.55; color:var(--shq-graphite);
}

/* Armed state: set by hub.js only when motion is allowed and the observer
   exists, so a page without JS never shows an empty rule. */
.shq-ledger.is-armed .shq-ledger__result::before{
  transform:scaleX(.02);
  transition:transform 720ms var(--shq-ease);
  transition-delay:var(--shq-trace-delay, 0ms);
}
.shq-ledger.is-armed .shq-ledger__row.is-traced .shq-ledger__result::before{ transform:none; }

/* ---------- Engagement phases ---------- */
.shq-phases-s{ padding:80px 0 76px; }
.shq-phases{
  list-style:none; margin:40px 0 0; padding:0;
  display:grid; grid-template-columns:repeat(3, minmax(0, 1fr));
  border-top:1px solid var(--shq-ink);
}
.shq-phase{ padding:24px 32px 8px 0; }
.shq-phase + .shq-phase{ padding-left:32px; border-left:1px solid var(--shq-rule); }
.shq-phase__name{ margin:0 0 12px; color:var(--shq-ink); font-size:12px; letter-spacing:.06em; text-transform:uppercase; }
.shq-phase p{ margin:0; font-size:16px; line-height:1.55; color:var(--shq-ink-soft); max-width:38ch; }
.shq-phases-s .shq-sec-intro{ margin-top:36px; font-size:16px; }

/* ---------- Hub index: every child page, rule 4 of the IA ---------- */
.shq-hub-index{ padding:80px 0 64px; border-top:1px solid var(--shq-rule); }
.shq-hub-index__grid{ display:grid; grid-template-columns:repeat(2, minmax(0, 1fr)); gap:48px; margin-top:36px; }
.shq-hub-index__h{ margin:0 0 4px; color:var(--shq-graphite); font-size:12px; letter-spacing:.06em; text-transform:uppercase; font-weight:500; }
.shq-hub-index__list{ list-style:none; margin:0; padding:0; }
.shq-hub-index__list li{ border-bottom:1px solid var(--shq-rule-soft); }
.shq-hub-index__list a{
  display:flex; justify-content:space-between; gap:16px;
  padding:13px 0; font-size:16px; color:var(--shq-ink); text-decoration:none;
}
.shq-hub-index__list a::after{ content:"\2192"; color:var(--shq-rule); transition:color 170ms ease, transform 170ms var(--shq-ease); }

/* ---------- Closing call to action ---------- */
.shq-hub-cta{ padding:104px 0 96px; background:var(--shq-panel); color:var(--shq-panel-text); }
.shq-hub-cta .shq-sec-h{ color:var(--shq-paper); }
.shq-hub-cta .shq-sec-intro{ color:var(--shq-panel-text); margin-bottom:32px; }
.shq-hub-cta__grid{ display:grid; grid-template-columns:minmax(0, 1.6fr) minmax(0, 1fr); gap:64px; align-items:end; }
.shq-hub-cta__alt{ border-top:1px solid var(--shq-panel-rule); padding-top:20px; }
.shq-hub-cta__alt p{ margin:0 0 14px; font-size:15px; line-height:1.55; color:var(--shq-panel-mute); }
.shq-hub-cta .shq-link{ color:var(--shq-paper); border-bottom-color:var(--shq-panel-rule); }
.shq-hub-cta .shq-btn:hover{ background:var(--shq-paper); border-color:var(--shq-paper); color:var(--shq-ink); }
.shq-hub-cta ::selection{ background:var(--shq-paper); color:var(--shq-ink); }

/* ---------- Hover, fine pointers only ---------- */
@media (hover: hover) and (pointer: fine){
  .shq-hub-index__list a:hover{ color:var(--shq-trace); }
  .shq-hub-index__list a:hover::after{ color:var(--shq-trace); transform:translateX(3px); }
  .shq-hub-cta .shq-link:hover{ color:var(--shq-paper); border-bottom-color:var(--shq-trace); }
}

/* ---------- Narrow screens ---------- */
@media (max-width:1040px){
  .shq-ledger__cols{ display:none; }
  .shq-ledger__row{ grid-template-columns:minmax(0, 1fr) minmax(0, 1fr); row-gap:20px; }
  .shq-ledger__problem{ grid-column:1 / -1; }
  .shq-ledger__result{ grid-column:1 / -1; }
  .shq-ledger__links{ grid-column:1 / -1; margin-top:4px; }
  .shq-ledger__cell dt{
    position:static; width:auto; height:auto; overflow:visible; clip-path:none; white-space:normal;
    margin:0 0 6px; font-size:11px; color:var(--shq-graphite); letter-spacing:.04em;
  }
  .shq-ledger__result dt{ margin-top:2px; }
}
@media (max-width:900px){
  .shq-hub-head__grid,
  .shq-hub-cta__grid{ grid-template-columns:minmax(0, 1fr); gap:28px; }
  .shq-phases{ grid-template-columns:minmax(0, 1fr); }
  .shq-phase,
  .shq-phase + .shq-phase{ padding:22px 0; border-left:0; border-bottom:1px solid var(--shq-rule); }
}
@media (max-width:700px){
  .shq-hub-head{ padding:32px 0 40px; }
  .shq-ledger-s{ padding:56px 0 44px; }
  .shq-ledger__row{ grid-template-columns:minmax(0, 1fr); }
  .shq-hub-index__grid{ grid-template-columns:minmax(0, 1fr); gap:32px; }
  .shq-hub-cta{ padding:72px 0 64px; }
}

/* ---------- Reduced motion: no trace, no nudge, colour changes stay ---------- */
@media (prefers-reduced-motion: reduce){
  .shq-ledger.is-armed .shq-ledger__result::before{ transform:none; transition:none; }
  .shq-hub-index__list a::after{ transition:color 170ms ease; }
  .shq-hub-index__list a:hover::after{ transform:none; }
}