/* Cascade Insights LLP — shared styles */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --ink:         #1a1a1a;
  --bg:          #f0f4f7;
  --mid:         #5f6f7e;
  --accent:      #4b5f72;
  --accent-dark: #364757;
  --rule:        #cdd5db;
  --panel:       #ffffff;
  --brick:       #b5522a;
  --brick-hover: #8f3d1c;
  --measure:     68ch;
  --gutter:      5vw;
  --header-h:    88px;
  --maxw:        1200px;
  /* Side padding: 5vw on small screens, centres a 1200px frame on wide ones */
  --edge:        max(5vw, calc((100% - var(--maxw)) / 2));
}

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 1rem); }

body {
  font-family: 'Jost', system-ui, -apple-system, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-weight: 400;
  font-size: 1.08rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: var(--accent); }
a:hover { color: var(--accent-dark); }

:focus-visible { outline: 2px solid var(--brick); outline-offset: 3px; }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--ink); color: #fff; padding: 0.6rem 1rem; z-index: 200;
}
.skip-link:focus { left: 1rem; top: 1rem; }

/* ── HEADER / NAV ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(240, 244, 247, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem var(--edge);
  min-height: var(--header-h);
}

.brand { display: block; line-height: 0; }
.brand svg { height: 72px; width: auto; display: block; }

.nav-list {
  list-style: none;
  display: flex;
  gap: 2.4rem;
}

.nav-list a {
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--ink);
  text-decoration: none;
  padding: 0.3rem 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s, color 0.2s;
}
.nav-list a:hover { color: var(--accent); border-bottom-color: var(--rule); }
.nav-list a[aria-current="page"] { color: var(--accent); border-bottom-color: var(--accent); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--rule);
  width: 44px;
  height: 44px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  color: var(--ink);
}
.nav-toggle-bars,
.nav-toggle-bars::before,
.nav-toggle-bars::after {
  display: block;
  width: 20px;
  height: 2px;
  background: currentColor;
  position: relative;
  transition: transform 0.2s, background 0.2s;
}
.nav-toggle-bars::before,
.nav-toggle-bars::after { content: ""; position: absolute; left: 0; }
.nav-toggle-bars::before { top: -6px; }
.nav-toggle-bars::after  { top: 6px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after  { transform: translateY(-6px) rotate(-45deg); }

/* ── LAYOUT ── */
.section { padding: 4.5rem var(--edge); }
.section + .section { border-top: 1px solid var(--rule); }
.section-tight { padding-top: 3rem; padding-bottom: 3rem; }
.section-alt { background: var(--panel); }

.wrap { max-width: none; }

/* Centred reading column for text sections: heading above, text below */
.split {
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}
.split-side { margin-bottom: 1.4rem; }
.split-side .h2 { margin-bottom: 0.5rem; }
.split-side .subtitle { margin-bottom: 0; }
.split > .h2, .split > h2, .split > .h3, .split > h1 { margin-bottom: 1.2rem; }
.split-main > * + * { margin-top: 1.1rem; }
.split-main .link-row { margin-top: 2rem; }
.split + .split, .split-gap { margin-top: 3rem; }

/* Large intro statements share the same centred column */
.lead { margin-left: auto; margin-right: auto; max-width: 760px; }
.prose { max-width: var(--measure); }
.prose p + p, .prose p + ul, .prose ul + p { margin-top: 1.1rem; }

h1, h2, h3 { font-weight: 300; line-height: 1.15; letter-spacing: -0.01em; }

.page-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 200;
  margin-bottom: 1.4rem;
  max-width: 24ch;
}

.h2 {
  font-size: clamp(1.6rem, 2.8vw, 2.3rem);
  margin-bottom: 0.5rem;
}

.subtitle {
  font-size: 1.15rem;
  color: var(--accent);
  font-weight: 400;
  margin-bottom: 1.8rem;
}

.lead {
  font-size: clamp(1.3rem, 2.2vw, 1.85rem);
  line-height: 1.5;
  font-weight: 300;
  max-width: 46ch;
}

.h3 {
  font-size: 1.2rem;
  font-weight: 500;
  letter-spacing: 0;
  margin-bottom: 0.6rem;
}

.muted { color: var(--mid); }

/* Lists */
.list {
  list-style: none;
  max-width: var(--measure);
}
.list li {
  position: relative;
  padding-left: 1.4rem;
  margin-bottom: 0.7rem;
}
.list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 0.55rem;
  height: 1px;
  background: var(--accent);
}
.list strong { font-weight: 500; }

/* Buttons and links */
.btn {
  display: inline-block;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  padding: 0.9rem 2rem;
  background: var(--brick);
  color: #fff;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background 0.2s;
}
.btn:hover { background: var(--brick-hover); color: #fff; }

.text-link {
  font-weight: 500;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
}
.text-link:hover { color: var(--accent-dark); }

.link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem 2.4rem;
  align-items: center;
  margin-top: 2.4rem;
}

.placeholder { opacity: 0.6; cursor: not-allowed; }

/* ── HOME: HERO ── */
.hero {
  position: relative;
  min-height: calc(100svh - var(--header-h));
  display: flex;
  align-items: flex-start;
  overflow: hidden;
  color: #fff;
}
.hero picture, .hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.hero-img { object-fit: cover; object-position: center 30%; }
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(8, 18, 30, 0.35) 0%, rgba(8, 18, 30, 0.12) 45%, rgba(8, 18, 30, 0) 65%);
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: clamp(3rem, 11vh, 7rem) var(--edge) 3rem;
  animation: fadeUp 0.9s ease 0.15s both;
}
.hero-content > * { max-width: 46rem; }
.hero-title {
  font-size: clamp(2.4rem, 5.2vw, 4.6rem);
  font-weight: 200;
  line-height: 1.05;
  margin-bottom: 1.3rem;
}
.hero-sub {
  font-size: clamp(1.15rem, 1.7vw, 1.4rem);
  line-height: 1.55;
  max-width: 44ch;
  margin-bottom: 0.9rem;
}
.hero-note {
  font-size: 1.05rem;
  opacity: 0.92;
  max-width: 52ch;
  margin-bottom: 2rem;
}

/* ── HOME: ENGAGEMENT CARDS ── */
.engage-grid {
  display: grid;
  grid-template-columns: 1fr 1.12fr 1fr;
  gap: 1rem;
  align-items: stretch;
  margin-top: 1.8rem;
}
.engage {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 1.8rem 1.6rem;
  background: var(--panel);
  border: 1px solid var(--rule);
  text-decoration: none;
  color: var(--ink);
  transition: border-color 0.2s, background 0.2s;
}
.engage:hover { border-color: var(--accent); color: var(--ink); }
.engage h3 { font-size: 1.3rem; font-weight: 400; }
.engage p { flex: 1; color: var(--mid); }
.engage .more { font-weight: 500; color: var(--accent); }

.engage-featured {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  padding-top: 2.4rem;
  padding-bottom: 2.4rem;
  margin: -0.8rem 0;
}
.engage-featured:hover { background: var(--accent-dark); border-color: var(--accent-dark); color: #fff; }
.engage-featured h3 { font-size: 1.45rem; }
.engage-featured p { color: rgba(255, 255, 255, 0.85); }
.engage-featured .more { color: #fff; }

/* ── HOME: WHY CASCADE ── */
.principles {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2.2rem 2.6rem;
  margin-top: 0.4rem;
}
.principle h3 {
  font-size: 1.25rem;
  font-weight: 500;
  padding-top: 0.9rem;
  border-top: 2px solid var(--accent);
  margin-bottom: 0.5rem;
  display: inline-block;
}

.clients {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1rem;
}
.clients li {
  border: 1px solid var(--rule);
  background: var(--panel);
  padding: 0.4rem 0.9rem;
  font-size: 0.98rem;
}

.cta-band {
  background: var(--accent);
  color: #fff;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.6rem 3rem;
}
.cta-band p {
  font-size: clamp(1.25rem, 2.2vw, 1.7rem);
  font-weight: 300;
  line-height: 1.4;
  max-width: 34ch;
}

/* ── APPROACH ── */
.subnav {
  position: sticky;
  top: var(--header-h);
  z-index: 50;
  background: var(--bg);
  border-bottom: 1px solid var(--rule);
  padding: 0 var(--edge);
}
.subnav ul { list-style: none; display: flex; gap: 2rem; max-width: 760px; margin: 0 auto; }
.subnav a {
  display: inline-block;
  padding: 0.9rem 0;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid transparent;
}
.subnav a:hover { border-bottom-color: var(--accent); color: var(--accent); }

.fit {
  margin: 0;
  padding: 1.5rem 1.6rem;
  background: var(--panel);
  border-left: 3px solid var(--accent);
}
.fit .h3 { margin-bottom: 0.8rem; }
.fit p { margin-bottom: 0.8rem; }
.fit .list li:last-child { margin-bottom: 0; }

/* ── SERVICES ── */
.service-groups {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 3rem 4rem;
  margin-top: 3rem;
}
.service-group h2 {
  font-size: 1.45rem;
  font-weight: 400;
  padding-bottom: 0.6rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--rule);
}
.service-group .note { color: var(--mid); margin-bottom: 0.9rem; }

/* ── ABOUT ── */
.mission {
  font-size: clamp(1.3rem, 2.3vw, 1.75rem);
  font-weight: 300;
  line-height: 1.5;
  max-width: 46ch;
  padding-left: 1.4rem;
  border-left: 3px solid var(--brick);
}

.people {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.4rem;
  margin-top: 2rem;
}
.person {
  background: var(--panel);
  border: 1px solid var(--rule);
  padding: 1.8rem;
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 1.4rem;
  align-content: start;
}
.person img {
  width: 140px;
  height: 140px;
  object-fit: cover;
  object-position: top;
}
.person-name { font-size: 1.2rem; font-weight: 500; }
.person-pronouns { font-weight: 400; color: var(--mid); font-size: 1rem; }
.person-role { color: var(--accent); margin-bottom: 0.7rem; }
.person-summary { grid-column: 1 / -1; }

.bio { grid-column: 1 / -1; border-top: 1px solid var(--rule); padding-top: 0.9rem; }
.bio summary {
  cursor: pointer;
  font-weight: 500;
  color: var(--accent);
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.bio summary::-webkit-details-marker { display: none; }
.bio summary::after {
  content: "+";
  font-size: 1.2rem;
  line-height: 1;
  transition: transform 0.2s;
}
.bio[open] summary::after { content: "\2212"; }
.bio .label-open { display: none; }
.bio[open] .label-open { display: inline; }
.bio[open] .label-closed { display: none; }
.bio p { margin-top: 0.9rem; }

.name-note { font-size: 1rem; color: var(--mid); }
.name-note h2 { font-size: 1.15rem; font-weight: 500; color: var(--ink); margin-bottom: 0.5rem; }

/* ── CONTACT ── */
.form-frame {
  width: 100%;
  height: 1250px;
  border: 1px solid var(--rule);
  background: var(--panel);
}

/* ── FOOTER ── */
.site-footer {
  border-top: 1px solid var(--rule);
  padding: 1.8rem var(--edge);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.6rem 2rem;
  font-size: 0.92rem;
  color: var(--mid);
}
.site-footer a { color: var(--mid); text-decoration: none; }
.site-footer a:hover { color: var(--accent); }

/* ── MOTION ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ── TABLET ── */
@media (max-width: 900px) {
  .engage-grid { grid-template-columns: 1fr; }
  .engage-featured { margin: 0; }
  .people { grid-template-columns: 1fr; }
}

/* ── MOBILE ── */
@media (max-width: 760px) {
  :root { --header-h: 68px; }
  body { font-size: 1.02rem; }
  .brand svg { height: 54px; }

  .nav-toggle { display: inline-flex; }
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--rule);
    box-shadow: 0 12px 24px rgba(26, 26, 26, 0.08);
  }
  .site-nav.is-open { display: block; }
  .nav-list { flex-direction: column; gap: 0; padding: 0.4rem var(--gutter) 1rem; }
  .nav-list a {
    display: block;
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--rule);
    font-size: 1.1rem;
  }
  .nav-list li:last-child a { border-bottom: none; }
  .nav-list a[aria-current="page"] { border-bottom-color: var(--rule); font-weight: 500; }

  .section { padding: 3rem var(--edge); }
  .hero-content { padding-top: 2.4rem; }
  .hero-img { object-position: center top; }
  .hero::after {
    background: linear-gradient(to bottom, rgba(8, 18, 30, 0.6) 0%, rgba(8, 18, 30, 0.35) 50%, rgba(8, 18, 30, 0) 75%);
  }
  .hero .btn { width: 100%; text-align: center; }

  .principles, .service-groups { grid-template-columns: 1fr; gap: 2rem; }

  .subnav ul { gap: 1.4rem; font-size: 0.95rem; }

  .person { grid-template-columns: 96px 1fr; padding: 1.3rem; gap: 1rem; }
  .person img { width: 96px; height: 96px; }

  .cta-band .btn { width: 100%; text-align: center; }
  .form-frame { height: 1450px; }
  .site-footer { flex-direction: column; }
}

/* "Is this for you?" panel on white sections */
.section-alt .fit { background: var(--bg); }

/* Page title when it sits in the narrow left column */
.split > .page-title { font-size: clamp(2rem, 3.6vw, 2.8rem); max-width: none; margin-bottom: 1.4rem; }

/* Full-width text: all text sections use the full 1200px content frame */
.split, .lead, .subnav ul, .split-main, .prose, .list, .mission,
.page-title, .cta-band p, .principles { max-width: none; }

@media (min-width: 1100px) {
  .lead { font-size: 1.9rem; }
  .split-main, .split > p:not(.mission), .split .principles p, .fit { font-size: 1.2rem; line-height: 1.75; }
  .split > .page-title { font-size: 2.9rem; }
  .mission { font-size: 1.85rem; }
  .principle h3 { font-size: 1.35rem; }
  .form-frame { height: 1300px; }
}

/* Home banner text uses the full content width too */
.hero-content > *, .hero-sub, .hero-note { max-width: none; }
@media (min-width: 1100px) {
  .hero-sub { font-size: 1.6rem; }
  .hero-note { font-size: 1.25rem; }
}