/* ==========================================================================
   Rockhouse Consulting portfolio
   --------------------------------------------------------------------------
   The block below holds every brand decision. Colors come from the Rockhouse
   logo (navy #002554, teal #0E8A94). If rockhouse-consulting.com uses a
   different font or width, change it HERE and the whole portfolio follows.
   ========================================================================== */
:root {
  --navy: #002554;
  --teal: #0E8A94;
  --teal-text: #0A6F78;      /* teal darkened for text on white (WCAG AA) */
  --teal-light: #8FDCE2;     /* teal for numerals and accents on navy */
  --teal-tint: #E6F3F4;
  --ink: #16263B;
  --muted: #52627A;
  --line: #D9E2EA;
  --mist: #F2F6F9;
  --paper: #FFFFFF;
  --on-navy: #D5E2EE;
  --on-navy-soft: #B9D3E6;

  --font-body: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-metric: "IBM Plex Sans Condensed", "IBM Plex Sans", "Arial Narrow", Arial, sans-serif;
  --wrap: 1180px;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
}
img { max-width: 100%; height: auto; }
a { color: var(--teal-text); }
h1, h2, h3 { text-wrap: balance; }
.wrap { width: min(var(--wrap), 100% - 2.5rem); margin-inline: auto; }

.skip {
  position: absolute; left: -999px; top: 0; z-index: 100;
  background: var(--navy); color: #fff; padding: .6rem 1rem;
}
.skip:focus { left: 0; }

:focus-visible { outline: 3px solid var(--teal); outline-offset: 2px; }
.on-dark :focus-visible { outline-color: var(--teal-light); }

/* ---------- Header (mirrors the main site) ---------- */
.site-header { position: relative; background: #fff; border-bottom: 1px solid var(--line); }
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1.5rem; min-height: 76px;
}
.brand { display: inline-flex; align-items: center; text-decoration: none; }
.brand img { display: block; height: 42px; width: auto; }
.wordmark { font-weight: 600; font-size: 1.15rem; color: var(--navy); }

.nav { display: flex; align-items: center; gap: .25rem; }
.nav a {
  display: block; padding: .5rem .8rem; color: var(--ink); text-decoration: none;
  font-weight: 500; font-size: .95rem; border-bottom: 2px solid transparent;
}
.nav a:hover { color: var(--teal-text); }
.nav a[aria-current="page"] { color: var(--navy); border-bottom-color: var(--teal); }

.nav-toggle {
  display: none; align-items: center; gap: .5rem;
  font: inherit; font-weight: 500; font-size: .95rem;
  padding: .5rem .8rem; background: #fff; color: var(--navy);
  border: 1px solid var(--line); border-radius: 3px; cursor: pointer;
}

/* ---------- Buttons and pills ---------- */
.btn {
  display: inline-block; padding: .8rem 1.3rem; border-radius: 3px;
  font-weight: 600; font-size: .95rem; line-height: 1.2; text-decoration: none;
  border: 2px solid transparent;
}
.btn--primary { background: var(--teal-text); color: #fff; }
.btn--primary:hover { background: #085A62; }
.btn--ghost { border-color: currentColor; color: var(--navy); }
.btn--ghost:hover { background: var(--mist); }
.on-dark .btn--primary { background: var(--teal-light); color: var(--navy); }
.on-dark .btn--primary:hover { background: #fff; }
.on-dark .btn--ghost { color: #fff; }
.on-dark .btn--ghost:hover { background: rgba(255, 255, 255, .1); }

.pill {
  display: inline-block; padding: .18rem .65rem; border-radius: 999px;
  font-size: .78rem; font-weight: 600; line-height: 1.4; white-space: nowrap; border: 1px solid;
}
.pill--client { background: var(--teal-text); border-color: var(--teal-text); color: #fff; }
.pill--other  { background: #fff; border-color: var(--navy); color: var(--navy); }
.on-dark .pill--client { background: var(--teal-light); border-color: var(--teal-light); color: var(--navy); }
.on-dark .pill--other  { background: transparent; border-color: #fff; color: #fff; }

/* ---------- Hero ---------- */
.hero { background: var(--navy); color: #fff; padding: clamp(3rem, 7vw, 5.5rem) 0; }
.hero-grid {
  display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4.5rem); align-items: end;
}
.hero h1 {
  margin: 0 0 1.6rem; font-size: clamp(2.1rem, 4.6vw, 3.6rem);
  line-height: 1.1; font-weight: 600; letter-spacing: -.015em;
}
.hero h1 span {
  display: block; padding: .16em 0;
  border-top: 1px solid rgba(143, 220, 226, .4);
}
.hero h1 span:first-child { border-top: 0; padding-top: 0; }
.lead { margin: 0; max-width: 56ch; font-size: 1.125rem; color: var(--on-navy); }

.key { border: 1px solid rgba(255, 255, 255, .22); padding: 1.25rem 1.4rem; }
.key h2 { margin: 0 0 1rem; font-size: 1rem; font-weight: 600; }
.key dl { margin: 0; display: grid; gap: .9rem; }
.key dt { margin: 0 0 .25rem; }
.key dd { margin: 0; font-size: .9rem; line-height: 1.45; color: var(--on-navy); }

/* ---------- Proof strip (same claims as the main site home page) ---------- */
.proof { background: var(--mist); border-bottom: 1px solid var(--line); }
.proof-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; padding: 1.75rem 0; }
.proof strong {
  display: block; font-family: var(--font-metric); font-weight: 600;
  font-size: 1.9rem; line-height: 1.1; color: var(--navy);
}
.proof span { display: block; margin-top: .3rem; font-size: .875rem; line-height: 1.4; color: var(--muted); }

/* ---------- Work section ---------- */
.work { padding: clamp(2.5rem, 5vw, 4rem) 0; }
.toolbar {
  display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between;
  gap: 1rem 2rem; margin-bottom: 1.5rem;
}
.toolbar h2 { margin: 0; font-size: 1.75rem; line-height: 1.2; color: var(--navy); }
.chips { display: flex; flex-wrap: wrap; gap: .5rem; }
.chip {
  font: inherit; font-size: .9rem; font-weight: 500; padding: .45rem .9rem;
  border-radius: 999px; border: 1px solid var(--line); background: #fff;
  color: var(--ink); cursor: pointer;
}
.chip:hover { border-color: var(--teal); }
.chip[aria-pressed="true"] { background: var(--navy); border-color: var(--navy); color: #fff; }

.filter-note {
  display: flex; flex-wrap: wrap; align-items: center; gap: .5rem 1rem;
  margin: 0 0 1.5rem; padding: .7rem 1rem; font-size: .95rem;
  background: var(--teal-tint); border-left: 3px solid var(--teal);
}
.filter-note[hidden] { display: none; }
.link-btn {
  font: inherit; color: var(--teal-text); background: none; border: 0; padding: 0;
  text-decoration: underline; cursor: pointer;
}

.group + .group { margin-top: 3rem; }
.group-head {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: .25rem 1rem;
  margin-bottom: 1.1rem; padding-bottom: .6rem; border-bottom: 2px solid var(--navy);
}
.group-head h3 { margin: 0; font-size: 1.2rem; color: var(--navy); }
.group-head p { margin: 0; font-size: .95rem; color: var(--muted); }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr)); gap: 1.5rem; }
.empty { padding: 2rem 0; color: var(--muted); }

/* ---------- Case tiles ---------- */
.tile {
  display: flex; flex-direction: column; background: #fff;
  border: 1px solid var(--line); border-radius: 2px; overflow: hidden;
  color: inherit; text-decoration: none;
}
.tile:hover { border-color: var(--teal); }
.tile-top {
  background: var(--navy); color: #fff; min-height: 11.25rem;
  padding: 1.15rem 1.3rem 1.3rem; border-left: 6px solid transparent;
}
.tile--client .tile-top { border-left-color: var(--teal-light); }
.tile-ind { margin: 0 0 .6rem; font-size: .85rem; color: var(--on-navy-soft); }
.metric {
  margin: 0; font-family: var(--font-metric); font-weight: 600;
  font-size: clamp(2.4rem, 3.4vw, 3.1rem); line-height: 1;
  letter-spacing: -.01em; color: var(--teal-light);
}
.metric--long { font-size: clamp(1.7rem, 2.4vw, 2.1rem); line-height: 1.1; }
.metric-label { margin: .55rem 0 0; font-size: .9rem; line-height: 1.4; color: #E3EDF6; }

.tile-body { flex: 1; padding: 1.15rem 1.3rem 0; }
.tile-body h3 { margin: 0 0 .5rem; font-size: 1.1rem; line-height: 1.3; color: var(--navy); }
.sum {
  margin: 0; font-size: .93rem; line-height: 1.55; color: var(--muted);
  display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden;
}
.caps { list-style: none; margin: .9rem 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: .4rem; }
.caps li {
  font-size: .78rem; line-height: 1.4; padding: .15rem .6rem;
  background: var(--mist); border: 1px solid var(--line); border-radius: 999px; color: var(--ink);
}
.caps a { color: inherit; text-decoration: none; }
.caps li:hover { border-color: var(--teal); }
.tile-foot {
  display: flex; justify-content: space-between; align-items: center;
  gap: .75rem; padding: 1.1rem 1.3rem 1.25rem;
}
.tile-cta { font-size: .9rem; font-weight: 600; color: var(--teal-text); }
.tile:hover .tile-cta { text-decoration: underline; }

/* ---------- Closing call to action ---------- */
.cta-band { background: var(--navy); color: #fff; padding: clamp(2.5rem, 5vw, 3.75rem) 0; }
.cta-band .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.5rem 3rem; }
.cta-band h2 { margin: 0 0 .4rem; font-size: clamp(1.5rem, 3vw, 2rem); line-height: 1.2; }
.cta-band p { margin: 0; max-width: 52ch; color: var(--on-navy); }
.cta-actions { display: flex; flex-wrap: wrap; gap: .75rem; }

/* ---------- Case study page ---------- */
.case-head { background: var(--navy); color: #fff; padding: clamp(2rem, 5vw, 3.25rem) 0 clamp(2.25rem, 5vw, 3.75rem); }
.crumbs { margin: 0 0 1.75rem; font-size: .9rem; color: var(--on-navy-soft); }
.crumbs a { color: #fff; }
.case-head-grid {
  display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: 2rem 4rem; align-items: end;
}
.case-head h1 {
  margin: .9rem 0 0; max-width: 22ch; font-size: clamp(1.9rem, 4vw, 3rem);
  line-height: 1.12; font-weight: 600; letter-spacing: -.01em;
}
.case-industry { margin: 0 0 .1rem; color: var(--on-navy-soft); font-size: .95rem; }
.case-metric { border-left: 6px solid var(--teal-light); padding-left: 1.4rem; }
.case-metric .metric { font-size: clamp(3rem, 7vw, 5rem); }
.case-metric .metric--long { font-size: clamp(2rem, 4.2vw, 3rem); }
.case-metric .metric-label { font-size: 1.05rem; }

.case-body {
  display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: 3rem; padding: clamp(2rem, 5vw, 3.5rem) 0;
}
.prose h2 { margin: 0 0 .6rem; font-size: 1.25rem; color: var(--navy); }
.prose h2:not(:first-child) { margin-top: 2rem; }
.prose p { margin: 0; max-width: 68ch; font-size: 1.05rem; }
.points { margin: 0; padding-left: 1.2rem; max-width: 68ch; font-size: 1.05rem; }
.points li { margin: .45rem 0; }
.case-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2rem; }
.facts { align-self: start; padding: 1.25rem 1.4rem; background: var(--mist); border: 1px solid var(--line); }
.facts dl { margin: 0; display: grid; gap: 1rem; }
.facts dt { margin: 0 0 .15rem; font-size: .85rem; color: var(--muted); }
.facts dd { margin: 0; font-weight: 500; }
.facts .caps { margin-top: .25rem; }
.facts .caps li { background: #fff; }

.related { padding: clamp(2rem, 5vw, 3.5rem) 0; background: var(--mist); border-top: 1px solid var(--line); }
.related h2 { margin: 0 0 1.25rem; font-size: 1.5rem; color: var(--navy); }
.not-found { padding: 4rem 0; }
.not-found h1 { margin: 0 0 .75rem; color: var(--navy); }

/* ---------- Footer (mirrors the main site) ---------- */
.site-footer { background: var(--mist); border-top: 1px solid var(--line); padding: 2.5rem 0 1.5rem; font-size: .93rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2rem; }
.footer-grid img { height: 38px; width: auto; display: block; margin-bottom: .75rem; }
.footer-grid p { margin: 0; max-width: 34ch; color: var(--muted); }
.footer-grid h2 { margin: 0 0 .6rem; font-size: .95rem; color: var(--navy); }
.footer-grid ul { margin: 0; padding: 0; list-style: none; }
.footer-grid li { margin: .3rem 0; }
.footer-grid a { color: var(--ink); text-decoration: none; }
.footer-grid a:hover { color: var(--teal-text); text-decoration: underline; }
.legal { margin: 2rem 0 0; padding-top: 1rem; border-top: 1px solid var(--line); font-size: .85rem; color: var(--muted); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-grid, .case-head-grid, .case-body { grid-template-columns: 1fr; }
  .proof-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid > :first-child { grid-column: 1 / -1; }
}
@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }
  .nav {
    display: none; position: absolute; left: 0; right: 0; top: 100%; z-index: 20;
    flex-direction: column; align-items: stretch; gap: 0;
    padding: .5rem 1.25rem 1rem; background: #fff; border-bottom: 1px solid var(--line);
  }
  .nav.open { display: flex; }
  .nav a { padding: .7rem 0; border-bottom: 1px solid var(--line); }
  .nav a[aria-current="page"] { border-bottom-color: var(--teal); }
}
@media (max-width: 560px) {
  .proof-grid { grid-template-columns: 1fr 1fr; gap: 1.25rem 1rem; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto !important; }
}