/* ==========================================================================
   Utterwick Group plc — Design System
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:ital,wght@0,300;0,400;0,600;1,300;1,400&family=Source+Sans+3:wght@300;400;600&display=swap');

/* --- Tokens --- */
:root {
  --colour-primary: #1a3a5c;
  --colour-secondary: #c8832a;
  --colour-neutral-dark: #2d2d2d;
  --colour-neutral-mid: #6b6b6b;
  --colour-neutral-light: #f4f4f1;
  --colour-white: #ffffff;
  --colour-border: #ddd9d0;
  --colour-rule: #c8832a;

  --font-display: 'Source Serif 4', Georgia, serif;
  --font-body: 'Source Sans 3', system-ui, sans-serif;
  --font-mono: 'Courier New', monospace;

  --max-width: 1200px;
  --grid-gap: 2rem;
  --nav-height: 72px;
}

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

html { font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.7;
  color: var(--colour-neutral-dark);
  background: var(--colour-white);
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--colour-primary); text-decoration: underline; }
a:hover { color: var(--colour-secondary); }

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.25;
  color: var(--colour-primary);
}

h1 { font-size: 2.25rem; margin-bottom: 1.5rem; }
h2 { font-size: 1.625rem; margin-top: 2.5rem; margin-bottom: 1rem; }
h3 { font-size: 1.25rem; margin-top: 2rem; margin-bottom: 0.75rem; }
h4 { font-size: 1.1rem; margin-top: 1.5rem; margin-bottom: 0.5rem; }

p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

ul, ol { margin-bottom: 1rem; padding-left: 1.5rem; }
li { margin-bottom: 0.35rem; }

blockquote {
  border-left: 3px solid var(--colour-rule);
  padding: 0.75rem 1.25rem;
  margin: 1.5rem 0;
  font-style: italic;
  color: var(--colour-neutral-mid);
}

/* --- Layout --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.grid {
  display: grid;
  gap: var(--grid-gap);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 768px) {
  .grid--2, .grid--3, .grid--4 {
    grid-template-columns: 1fr;
  }
}

/* --- Site Header --- */
.site-header {
  background: var(--colour-primary);
  color: var(--colour-white);
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.site-header__name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--colour-white);
  text-decoration: none;
  white-space: nowrap;
}

.site-header__name:hover { color: var(--colour-secondary); }

.site-nav { display: flex; align-items: center; gap: 0.25rem; }

.site-nav a {
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 400;
  padding: 0.5rem 0.75rem;
  border-radius: 4px;
  transition: color 0.15s, background 0.15s;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--colour-white);
  background: rgba(255,255,255,0.1);
}

/* Dropdown */
.nav-dropdown {
  position: relative;
}

.nav-dropdown__toggle {
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.nav-dropdown__toggle::after {
  content: '';
  border: 4px solid transparent;
  border-top-color: rgba(255,255,255,0.6);
  margin-top: 2px;
}

.nav-dropdown__menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--colour-white);
  border: 1px solid var(--colour-border);
  border-radius: 4px;
  min-width: 220px;
  padding: 0.5rem 0;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.nav-dropdown.is-open .nav-dropdown__menu { display: block; }

.nav-dropdown__menu a {
  display: block;
  color: var(--colour-neutral-dark);
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  border-radius: 0;
}

.nav-dropdown__menu a:hover {
  background: var(--colour-neutral-light);
  color: var(--colour-primary);
}

/* Site search */
.site-search {
  position: relative;
  margin-left: 0.5rem;
}

.site-search__input {
  font-family: var(--font-body);
  font-size: 0.85rem;
  padding: 0.4rem 2rem 0.4rem 0.75rem;
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 4px;
  background: rgba(255,255,255,0.1);
  color: var(--colour-white);
  width: 180px;
  transition: width 0.2s, border-color 0.2s, background 0.2s;
  outline: none;
}

.site-search__input::placeholder {
  color: rgba(255,255,255,0.5);
}

.site-search__input:focus {
  width: 240px;
  border-color: rgba(255,255,255,0.5);
  background: rgba(255,255,255,0.15);
}

.site-search__icon {
  position: absolute;
  right: 0.6rem;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: rgba(255,255,255,0.5);
  font-size: 0.85rem;
  line-height: 1;
}

.site-search__results {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--colour-white);
  border: 1px solid var(--colour-border);
  border-radius: 4px;
  min-width: 300px;
  max-height: 360px;
  overflow-y: auto;
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
  z-index: 200;
}

.site-search__results.is-open { display: block; }

.site-search__results a {
  display: block;
  padding: 0.65rem 1rem;
  color: var(--colour-neutral-dark);
  text-decoration: none;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--colour-neutral-light);
}

.site-search__results a:last-child { border-bottom: none; }

.site-search__results a:hover {
  background: var(--colour-neutral-light);
  color: var(--colour-primary);
}

.site-search__results a small {
  display: block;
  font-size: 0.75rem;
  color: var(--colour-neutral-mid);
  margin-top: 0.15rem;
}

.site-search__empty {
  padding: 0.75rem 1rem;
  font-size: 0.85rem;
  color: var(--colour-neutral-mid);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--colour-white);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
}

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .site-nav {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--colour-primary);
    flex-direction: column;
    padding: 1rem;
    gap: 0;
  }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 0.75rem 1rem; width: 100%; }
  .nav-dropdown__menu {
    position: static;
    box-shadow: none;
    border: none;
    background: rgba(255,255,255,0.05);
  }
  .nav-dropdown__menu a { color: rgba(255,255,255,0.85); padding-left: 2rem; }
  .nav-dropdown__menu a:hover { background: rgba(255,255,255,0.1); color: var(--colour-white); }
  .site-search { margin: 0.5rem 1rem 0; }
  .site-search__input { width: 100%; }
  .site-search__input:focus { width: 100%; }
  .site-search__results { min-width: 100%; right: 0; left: 0; }
}

/* --- Hero / Page Header --- */
.page-header {
  background: var(--colour-neutral-light);
  border-bottom: 3px solid var(--colour-rule);
  padding: 3rem 0;
}

.page-header h1 { margin-bottom: 0.5rem; }
.page-header p {
  font-size: 1.125rem;
  color: var(--colour-neutral-mid);
  max-width: 680px;
}

/* --- Content sections --- */
.section {
  padding: 3rem 0;
}

.section + .section {
  border-top: 1px solid var(--colour-border);
}

.section--alt {
  background: var(--colour-neutral-light);
}

/* --- Cards --- */
.card {
  border: 1px solid var(--colour-border);
  border-radius: 6px;
  padding: 1.5rem;
  background: var(--colour-white);
}

.card h3 { margin-top: 0; }

.card--linked {
  text-decoration: none;
  display: block;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.card--linked:hover {
  border-color: var(--colour-secondary);
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

/* --- Tables --- */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}

th, td {
  text-align: left;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--colour-border);
}

th {
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--colour-primary);
  background: var(--colour-neutral-light);
}

/* --- Key figures --- */
.key-figures {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.key-figure {
  text-align: center;
  padding: 1.5rem;
}

.key-figure__value {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 600;
  color: var(--colour-primary);
  display: block;
}

.key-figure__label {
  font-size: 0.85rem;
  color: var(--colour-neutral-mid);
  margin-top: 0.25rem;
  display: block;
}

/* --- Board / People --- */
.person {
  margin-bottom: 2rem;
}

.person__name {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--colour-primary);
  font-size: 1.1rem;
}

.person__role {
  font-size: 0.9rem;
  color: var(--colour-secondary);
  font-weight: 600;
  display: block;
  margin-bottom: 0.35rem;
}

/* --- Footer --- */
.site-footer {
  background: var(--colour-primary);
  color: rgba(255,255,255,0.7);
  padding: 2.5rem 0;
  font-size: 0.85rem;
  margin-top: 3rem;
}

.site-footer a { color: rgba(255,255,255,0.85); }
.site-footer a:hover { color: var(--colour-white); }

.site-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 2rem;
}

.site-footer__address { line-height: 1.6; }

.site-footer__legal {
  text-align: right;
}

@media (max-width: 768px) {
  .site-footer .container { flex-direction: column; }
  .site-footer__legal { text-align: left; }
}

/* --- Breadcrumb --- */
.breadcrumb {
  font-size: 0.85rem;
  color: var(--colour-neutral-mid);
  margin-bottom: 0.75rem;
}

.breadcrumb a { color: var(--colour-neutral-mid); }
.breadcrumb a:hover { color: var(--colour-primary); }
.breadcrumb span { margin: 0 0.35rem; }

/* --- Updated date --- */
.freshness {
  font-size: 0.8rem;
  color: var(--colour-neutral-mid);
  font-style: italic;
  margin-top: 0.5rem;
}

/* --- Spec list (engineering/products) --- */
.spec-list {
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.spec-list dt {
  font-weight: 600;
  color: var(--colour-primary);
  margin-top: 0.75rem;
}

.spec-list dd {
  margin-left: 0;
  margin-bottom: 0.5rem;
}

/* --- CTA / Contact --- */
.cta-block {
  background: var(--colour-neutral-light);
  border: 1px solid var(--colour-border);
  border-radius: 6px;
  padding: 2rem;
  margin: 2rem 0;
  text-align: center;
}

.cta-block h3 { margin-top: 0; }

.btn {
  display: inline-block;
  padding: 0.65rem 1.5rem;
  background: var(--colour-primary);
  color: var(--colour-white);
  text-decoration: none;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: background 0.15s;
}

.btn:hover {
  background: var(--colour-secondary);
  color: var(--colour-white);
}

/* --- Hero --- */
.hero {
  color: var(--colour-white);
  position: relative;
  overflow: hidden;
  min-height: 520px;
  display: flex;
  align-items: flex-end;
}

.hero__image {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  z-index: 0;
}

/* Dark overlay — navy gradient left-to-right for text legibility */
.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background:
    linear-gradient(
      to right,
      rgba(26, 58, 92, 0.92) 0%,
      rgba(26, 58, 92, 0.75) 45%,
      rgba(26, 58, 92, 0.35) 75%,
      rgba(26, 58, 92, 0.15) 100%
    ),
    linear-gradient(
      to top,
      rgba(26, 58, 92, 0.6) 0%,
      transparent 40%
    );
  z-index: 1;
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 2;
  padding-top: 5rem;
  padding-bottom: 3.5rem;
  max-width: 680px;
  margin-left: max(1.5rem, calc((100% - var(--max-width)) / 2 + 1.5rem));
  margin-right: auto;
}

.hero h1 {
  color: var(--colour-white);
  font-size: 2.75rem;
  margin-bottom: 1rem;
  text-shadow: 0 1px 4px rgba(0,0,0,0.15);
}

.hero__strapline {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 300;
  color: rgba(255,255,255,0.9);
  margin-bottom: 1.5rem;
  letter-spacing: 0.01em;
  text-shadow: 0 1px 3px rgba(0,0,0,0.12);
}

.hero__intro {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.82);
  max-width: 620px;
  line-height: 1.8;
}

.hero__rule {
  width: 60px;
  height: 3px;
  background: var(--colour-secondary);
  border: none;
  margin: 1.5rem 0;
}

@media (max-width: 768px) {
  .hero { min-height: 400px; }
  .hero .container {
    padding-top: 3.5rem;
    padding-bottom: 2.5rem;
    margin-left: 1.5rem;
  }
  .hero h1 { font-size: 2rem; }
  .hero__strapline { font-size: 1.1rem; }
  .hero::before {
    background:
      linear-gradient(
        to bottom,
        rgba(26, 58, 92, 0.7) 0%,
        rgba(26, 58, 92, 0.85) 100%
      );
  }
}

/* --- Section highlight (financial) --- */
.section--highlight {
  background: var(--colour-neutral-light);
}

.section__date {
  font-size: 0.85rem;
  color: var(--colour-neutral-mid);
  font-style: italic;
  margin-bottom: 1rem;
}

/* --- Division cards --- */
.division-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 1.5rem;
}

@media (max-width: 768px) {
  .division-cards { grid-template-columns: 1fr; }
}

.division-card {
  border: 1px solid var(--colour-border);
  border-radius: 8px;
  padding: 2rem 1.75rem;
  background: var(--colour-white);
  transition: border-color 0.2s, box-shadow 0.2s;
  position: relative;
}

.division-card:hover {
  border-color: var(--colour-secondary);
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}

.division-card__icon {
  width: 48px;
  height: 48px;
  margin-bottom: 1.25rem;
}

.division-card__accent {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  border-radius: 8px 8px 0 0;
}

.division-card__accent--instrumentation { background: #2a7c8c; }
.division-card__accent--environmental { background: #3a6b3a; }
.division-card__accent--engineering { background: var(--colour-primary); }

.division-card h3 {
  margin-top: 0;
  font-size: 1.15rem;
}

.division-card h3 a {
  color: var(--colour-primary);
  text-decoration: none;
}

.division-card h3 a:hover { color: var(--colour-secondary); }

.division-card__meta {
  font-size: 0.85rem;
  color: var(--colour-neutral-mid);
  margin-bottom: 0.75rem;
}

.link-arrow {
  display: inline-block;
  margin-top: 0.75rem;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--colour-primary);
  text-decoration: none;
}

.link-arrow::after {
  content: ' \2192';
  transition: margin-left 0.15s;
}

.link-arrow:hover {
  color: var(--colour-secondary);
}

.link-arrow:hover::after {
  margin-left: 4px;
}

/* --- Page freshness --- */
.page-freshness {
  font-size: 0.8rem;
  color: var(--colour-neutral-mid);
  font-style: italic;
}

/* --- Utility --- */
.text-muted { color: var(--colour-neutral-mid); }
.text-small { font-size: 0.85rem; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); border: 0;
}