/* SeeChange Innovative — site styles
   Palette drawn from the company stamp blue, Kashmir pine and Hunza apricot. */

:root {
  --ink: #13233f;
  --ink-soft: #3d4d68;
  --stamp: #2a4fa3;
  --stamp-deep: #1d3a7d;
  --pine: #1d5c52;
  --apricot: #e4a03a;
  --glacier: #edf2f5;
  --paper: #ffffff;
  --line: #d5dde6;
  --on-dark: #eef3f8;

  --font-display: "Bricolage Grotesque", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-body: "Figtree", "Segoe UI", system-ui, -apple-system, sans-serif;

  --step--1: 0.875rem;
  --step-0: 1.0625rem;
  --step-1: 1.3125rem;
  --step-2: 1.75rem;
  --step-3: 2.375rem;
  --step-4: clamp(2.5rem, 5.2vw, 4.25rem);

  --wrap: 1180px;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --radius-s: 6px;
  --radius-l: 18px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e6ecf4;
    --ink-soft: #aab7c8;
    --stamp: #7f9fe6;
    --stamp-deep: #a9c0f2;
    --pine: #6fb8a8;
    --apricot: #f0b458;
    --glacier: #15213a;
    --paper: #0d1629;
    --line: #2a3957;
  }
}

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

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  text-rendering: optimizeLegibility;
}

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

a { color: var(--stamp); text-underline-offset: 3px; }
a:hover { color: var(--stamp-deep); }

:focus-visible {
  outline: 3px solid var(--apricot);
  outline-offset: 3px;
  border-radius: 3px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin: 0 0 0.6em;
  font-weight: 700;
}
h1 { font-size: var(--step-4); font-weight: 800; letter-spacing: -0.03em; }
h2 { font-size: var(--step-3); }
h3 { font-size: var(--step-1); letter-spacing: -0.005em; }
p { margin: 0 0 1em; max-width: 68ch; }

.wrap { width: min(100% - 2 * var(--gutter), var(--wrap)); margin-inline: auto; }

.skip-link {
  position: absolute; left: -999px; top: 0.5rem;
  background: var(--ink); color: var(--paper); padding: 0.6rem 1rem; z-index: 100;
}
.skip-link:focus { left: 0.5rem; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; min-height: 72px; gap: 1rem; }

.brand { display: flex; align-items: center; gap: 0.7rem; text-decoration: none; color: var(--ink); }
.brand svg { width: 46px; height: 24px; flex: none; }
.brand-name { font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; line-height: 1.1; display: block; }
.brand-sub { font-size: 0.78rem; color: var(--ink-soft); display: block; }

.nav-toggle {
  display: none; background: none; border: 1px solid var(--line); color: var(--ink);
  border-radius: var(--radius-s); padding: 0.5rem 0.75rem; font: inherit; font-size: 0.95rem; cursor: pointer;
}

.main-nav ul { list-style: none; margin: 0; padding: 0; display: flex; align-items: center; gap: 0.25rem; }
.main-nav a, .main-nav button.sub-toggle {
  display: block; padding: 0.55rem 0.8rem; text-decoration: none; color: var(--ink);
  font-weight: 500; font-size: 0.98rem; border-radius: var(--radius-s);
  background: none; border: 0; font-family: inherit; cursor: pointer;
}
.main-nav a:hover, .main-nav button.sub-toggle:hover { background: var(--glacier); color: var(--ink); }
.main-nav a[aria-current="page"] { color: var(--stamp); box-shadow: inset 0 -2px 0 var(--stamp); border-radius: 0; }
.main-nav .nav-cta { background: var(--stamp); color: #fff; margin-left: 0.5rem; }
.main-nav .nav-cta:hover { background: var(--stamp-deep); color: #fff; }
@media (prefers-color-scheme: dark) { .main-nav .nav-cta, .main-nav .nav-cta:hover { color: #0d1629; } }

.has-sub { position: relative; }
.sub-toggle::after { content: ""; display: inline-block; margin-left: 0.4rem; width: 0.4em; height: 0.4em; border-right: 2px solid currentColor; border-bottom: 2px solid currentColor; transform: translateY(-3px) rotate(45deg); transition: transform .2s; }
.has-sub.open .sub-toggle::after { transform: translateY(0) rotate(-135deg); }
.submenu {
  position: absolute; top: calc(100% + 6px); left: 0; min-width: 260px;
  background: var(--paper); border: 1px solid var(--line); border-radius: 10px;
  padding: 0.4rem; box-shadow: 0 18px 40px -18px rgba(19, 35, 63, 0.35);
  display: none !important; flex-direction: column; align-items: stretch !important;
}
.has-sub.open .submenu { display: flex !important; }
.submenu a { padding: 0.6rem 0.8rem; }

@media (max-width: 960px) {
  .nav-toggle { display: inline-flex; }
  .main-nav { position: absolute; top: 100%; left: 0; right: 0; background: var(--paper); border-bottom: 1px solid var(--line); display: none; }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; align-items: stretch; padding: 0.75rem var(--gutter) 1.25rem; }
  .main-nav .nav-cta { margin: 0.5rem 0 0; text-align: center; }
  .submenu { position: static; box-shadow: none; border: 0; padding: 0 0 0 1rem; min-width: 0; }
  .main-nav a[aria-current="page"] { box-shadow: inset 3px 0 0 var(--stamp); }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.85rem 1.35rem; border-radius: var(--radius-s);
  font-weight: 600; text-decoration: none; font-size: 1rem; border: 2px solid transparent;
  cursor: pointer; font-family: inherit; transition: background .15s, color .15s, border-color .15s;
}
.btn-primary { background: var(--stamp); color: #fff; }
.btn-primary:hover { background: var(--stamp-deep); color: #fff; }
@media (prefers-color-scheme: dark) { .btn-primary, .btn-primary:hover { color: #0d1629; } }
.btn-ghost { border-color: var(--line); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--stamp); color: var(--stamp); }
.btn-row { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.75rem; }

/* ---------- Home hero with the delivery loop ---------- */
.hero { padding: clamp(3rem, 7vw, 6rem) 0 clamp(2.5rem, 5vw, 4rem); }
.hero .wrap { display: grid; grid-template-columns: 1fr 1.05fr; gap: clamp(2rem, 4vw, 4rem); align-items: center; }
.hero h1 { max-width: 13ch; }
.hero .lede { font-size: var(--step-1); color: var(--ink-soft); line-height: 1.5; max-width: 40ch; }

.loop-figure { margin: 0; }
.loop-figure svg { width: 100%; height: auto; overflow: visible; }
.loop-track { fill: none; stroke: var(--line); stroke-width: 22; stroke-linecap: round; }
.loop-line { fill: none; stroke: var(--stamp); stroke-width: 3; }
.loop-node circle { fill: var(--paper); stroke: var(--stamp); stroke-width: 3; transition: fill .3s, stroke .3s, r .3s; }
.loop-node text { font-family: var(--font-display); font-size: 17px; font-weight: 600; fill: var(--ink); transition: fill .3s; }
.loop-node.active circle { fill: var(--apricot); stroke: var(--apricot); }
.loop-node.active text { fill: var(--stamp); }
.loop-runner { fill: var(--apricot); }
.loop-caption { font-size: var(--step--1); color: var(--ink-soft); margin-top: 0.75rem; text-align: center; max-width: none; }

@media (max-width: 860px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .hero h1 { max-width: 16ch; }
}

/* ---------- Inner page header ---------- */
.page-head { background: var(--glacier); padding: clamp(2.75rem, 6vw, 5rem) 0; border-bottom: 1px solid var(--line); }
.page-head .wrap { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(2rem, 4vw, 3.5rem); align-items: center; }
.page-head h1 { font-size: clamp(2.25rem, 4.5vw, 3.6rem); max-width: 16ch; }
.page-head .lede { font-size: var(--step-1); color: var(--ink-soft); line-height: 1.5; }
.page-head img { border-radius: var(--radius-l); aspect-ratio: 4 / 3; object-fit: cover; width: 100%; }
.crumbs { font-size: var(--step--1); margin-bottom: 1rem; color: var(--ink-soft); }
.crumbs a { color: var(--ink-soft); }
@media (max-width: 860px) { .page-head .wrap { grid-template-columns: 1fr; } }

/* ---------- Sections ---------- */
.section { padding: clamp(3rem, 7vw, 5.5rem) 0; }
.section-alt { background: var(--glacier); }
.section-dark { background: #13233f; color: var(--on-dark); }
.section-dark h2, .section-dark h3 { color: #fff; }
.section-dark p { color: #c6d1e0; }
.section-dark a { color: #f0b458; }
.section-intro { max-width: 62ch; margin-bottom: 2.5rem; }
.section-intro p { color: var(--ink-soft); font-size: 1.12rem; }
.section-dark .section-intro p { color: #c6d1e0; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4.5rem); align-items: center; }
.split img { border-radius: var(--radius-l); aspect-ratio: 5 / 4; object-fit: cover; width: 100%; }
.split.reverse > :first-child { order: 2; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } .split.reverse > :first-child { order: 0; } }

/* Practice areas on home: a ruled list, not a card grid */
.practice-list { list-style: none; margin: 0; padding: 0; border-top: 2px solid var(--ink); }
.practice-list li { border-bottom: 1px solid var(--line); }
.practice-list a {
  display: grid; grid-template-columns: minmax(180px, 0.9fr) 1.6fr auto; gap: 1.5rem; align-items: baseline;
  padding: 1.6rem 0.25rem; color: var(--ink); text-decoration: none;
}
.practice-list a:hover { background: var(--glacier); }
.practice-list h3 { margin: 0; font-size: var(--step-2); }
.practice-list p { margin: 0; color: var(--ink-soft); }
.practice-list .go { font-weight: 600; color: var(--stamp); white-space: nowrap; }
@media (max-width: 760px) { .practice-list a { grid-template-columns: 1fr; gap: 0.5rem; } }

/* Service detail blocks */
.service-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 2.5rem 3rem; }
.service { padding-top: 1.25rem; border-top: 3px solid var(--stamp); }
.service h3 { margin-bottom: 0.4rem; }
.service p { color: var(--ink-soft); margin: 0 0 0.75rem; }
.service ul { margin: 0; padding-left: 1.1rem; color: var(--ink-soft); }
.service li { margin-bottom: 0.3rem; }
.service a.more { font-weight: 600; text-decoration: none; }

.group-title { font-size: var(--step-2); margin: 3.5rem 0 1.5rem; padding-bottom: 0.5rem; border-bottom: 1px solid var(--line); }
.group-title:first-of-type { margin-top: 0; }

/* Check list */
.ticks { list-style: none; padding: 0; margin: 0 0 1rem; }
.ticks li { position: relative; padding-left: 1.9rem; margin-bottom: 0.7rem; }
.ticks li::before {
  content: ""; position: absolute; left: 0; top: 0.45em; width: 1.05rem; height: 0.55rem;
  border-left: 3px solid var(--pine); border-bottom: 3px solid var(--pine); transform: rotate(-45deg) translateY(-3px);
}

/* Numbered process — genuinely sequential */
.steps { list-style: none; margin: 0; padding: 0; counter-reset: step; }
.steps > li {
  counter-increment: step; display: grid; grid-template-columns: 5.5rem 1fr; gap: 1.5rem;
  padding: 2rem 0; border-top: 1px solid var(--line);
}
.steps > li:last-child { border-bottom: 1px solid var(--line); }
.steps > li::before {
  content: counter(step); font-family: var(--font-display); font-weight: 800; font-size: 3.25rem;
  line-height: 1; color: var(--stamp);
}
.steps h3 { font-size: var(--step-2); margin-bottom: 0.4rem; }
.steps p { color: var(--ink-soft); }
.steps .out { font-size: var(--step--1); color: var(--pine); font-weight: 600; margin: 0; }
@media (max-width: 600px) { .steps > li { grid-template-columns: 1fr; gap: 0.5rem; } }

/* Engagement models */
.models { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.5rem; }
.model { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 1.75rem; }
.model h3 { color: var(--stamp); }
.model p { color: var(--ink-soft); margin-bottom: 0.75rem; }
.model .fit { font-size: var(--step--1); margin: 0; color: var(--ink); }
.model .fit strong { color: var(--pine); }

/* Offices */
.offices { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.office { border-left: 4px solid var(--apricot); padding: 0.25rem 0 0.25rem 1.5rem; }
.office h3 { margin-bottom: 0.3rem; }
.office address { font-style: normal; color: var(--ink-soft); }
.section-dark .office address { color: #c6d1e0; }
@media (max-width: 700px) { .offices { grid-template-columns: 1fr; } }

/* Registration facts table */
.facts { width: 100%; border-collapse: collapse; }
.facts th, .facts td { text-align: left; padding: 0.9rem 1rem 0.9rem 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.facts th { font-weight: 600; width: 38%; color: var(--ink-soft); }
.table-scroll { overflow-x: auto; }

/* Quote-like statement */
.statement { font-family: var(--font-display); font-size: clamp(1.6rem, 3.2vw, 2.4rem); line-height: 1.25; font-weight: 600; letter-spacing: -0.02em; max-width: 30ch; margin: 0; }

/* CTA band */
.cta-band { background: var(--stamp); color: #fff; padding: clamp(2.75rem, 6vw, 4.5rem) 0; }
.cta-band .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 1.5rem; }
.cta-band h2 { color: #fff; margin: 0 0 0.4rem; font-size: var(--step-3); }
.cta-band p { margin: 0; color: #dbe4f7; }
.cta-band .btn { background: #fff; color: #1d3a7d; }
.cta-band .btn:hover { background: var(--apricot); color: #13233f; }
@media (prefers-color-scheme: dark) { .cta-band { background: #1d3a7d; } }

/* Research areas */
.areas { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 0; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.area { padding: 2rem; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.area h3 { margin-bottom: 0.5rem; }
.area p { color: var(--ink-soft); margin: 0; }

/* Testing matrix */
.matrix { width: 100%; border-collapse: collapse; min-width: 560px; }
.matrix th, .matrix td { padding: 0.9rem 1rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.matrix thead th { font-family: var(--font-display); border-bottom: 2px solid var(--ink); }
.matrix td:first-child { font-weight: 600; }

/* Contact form */
.contact-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: clamp(2rem, 5vw, 4rem); align-items: start; }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }
.form { display: grid; gap: 1.1rem; }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
@media (max-width: 560px) { .form .row { grid-template-columns: 1fr; } }
.field label { display: block; font-weight: 600; margin-bottom: 0.35rem; font-size: 0.95rem; }
.field input, .field select, .field textarea {
  width: 100%; padding: 0.8rem 0.9rem; border: 1px solid var(--line); border-radius: var(--radius-s);
  font: inherit; color: var(--ink); background: var(--paper);
}
.field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid var(--stamp); outline-offset: 0; border-color: var(--stamp); }
.field textarea { min-height: 150px; resize: vertical; }
.field .hint { font-size: var(--step--1); color: var(--ink-soft); margin: 0.3rem 0 0; }
.field.invalid input, .field.invalid textarea, .field.invalid select { border-color: #c0392b; }
.field .error { color: #c0392b; font-size: var(--step--1); margin: 0.3rem 0 0; display: none; }
.field.invalid .error { display: block; }
.form-note { font-size: var(--step--1); color: var(--ink-soft); }
.form-status { padding: 0.9rem 1rem; border-radius: var(--radius-s); background: var(--glacier); border-left: 4px solid var(--pine); display: none; }
.form-status.show { display: block; }

.contact-card { background: var(--glacier); border-radius: var(--radius-l); padding: 2rem; }
.contact-card dl { margin: 0; }
.contact-card dt { font-weight: 600; margin-top: 1.1rem; }
.contact-card dt:first-child { margin-top: 0; }
.contact-card dd { margin: 0.2rem 0 0; color: var(--ink-soft); }

/* FAQ */
.faq details { border-bottom: 1px solid var(--line); padding: 1.1rem 0; }
.faq summary { cursor: pointer; font-weight: 600; font-size: 1.1rem; list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--font-display); font-size: 1.5rem; line-height: 1; color: var(--stamp); }
.faq details[open] summary::after { content: "\2212"; }
.faq details p { margin: 0.75rem 0 0; color: var(--ink-soft); }

/* Photo credits */
.credits { columns: 2 260px; font-size: var(--step--1); color: var(--ink-soft); padding-left: 1rem; }
.credits li { margin-bottom: 0.35rem; }

/* ---------- Footer ---------- */
.site-footer { background: #0e1a31; color: #b9c5d6; padding: 3.5rem 0 2rem; font-size: 0.95rem; }
.site-footer a { color: #e2e9f3; text-decoration: none; }
.site-footer a:hover { color: #f0b458; text-decoration: underline; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.3fr; gap: 2rem; }
.site-footer h2 { font-size: 1rem; color: #fff; margin-bottom: 0.9rem; letter-spacing: 0; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: 0.45rem; }
.site-footer address { font-style: normal; margin-bottom: 0.9rem; }
.footer-brand .brand { color: #fff; }
.footer-brand .brand-sub { color: #9fb0c6; }
.footer-brand p { margin-top: 1rem; }
.footer-base { margin-top: 2.5rem; padding-top: 1.25rem; border-top: 1px solid #243556; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.75rem; font-size: 0.85rem; }
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }

/* ---------- Motion preferences ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* Leadership */
.leaders { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; }
.leader { display: grid; grid-template-columns: 88px 1fr; gap: 1.5rem; align-items: start; padding: 2rem; border: 1px solid var(--line); border-radius: var(--radius-l); }
.leader .initials { width: 88px; height: 88px; border-radius: 50%; background: var(--stamp); color: #fff; display: grid; place-items: center; font-family: var(--font-display); font-weight: 700; font-size: 1.9rem; }
@media (prefers-color-scheme: dark) { .leader .initials { color: #0d1629; } }
.leader h3 { margin-bottom: 0.15rem; font-size: var(--step-2); }
.leader .role { color: var(--pine); font-weight: 600; margin-bottom: 0.75rem; }
.leader p:last-child { color: var(--ink-soft); margin: 0; }
@media (max-width: 480px) { .leader { grid-template-columns: 1fr; } }