/* =========================================================
   S4R Consultancy — stylesheet
   Palette: Primary Blue #3B6BA8 · Accent Green #A4C424
            Dark Charcoal #3A3A3C · Off-White #F5F6F8
   ========================================================= */

:root {
  --blue: #3B6BA8;
  --blue-dark: #2C5384;
  --green: #A4C424;
  --green-dark: #8AA81D;
  --charcoal: #3A3A3C;
  --off-white: #F5F6F8;
  --white: #FFFFFF;
  --border: #E1E4E9;

  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --container-w: 1180px;
  --radius: 10px;
  --shadow-sm: 0 1px 3px rgba(58,58,60,0.08), 0 1px 2px rgba(58,58,60,0.06);
  --shadow-md: 0 6px 20px rgba(58,58,60,0.10);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-base);
  color: var(--charcoal);
  background: var(--off-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--green-dark); }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4 { color: var(--blue); line-height: 1.25; margin: 0 0 0.6em; font-weight: 700; }
p { margin: 0 0 1em; }
address { font-style: normal; }
button, input, select, textarea { font-family: inherit; font-size: 1rem; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--blue);
  color: #fff;
  padding: 0.75rem 1.25rem;
  z-index: 1000;
  border-radius: 0 0 6px 0;
}
.skip-link:focus { left: 0; }

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease, color 0.15s ease;
}
.btn-cta {
  background: var(--green);
  color: #24310a;
}
.btn-cta:hover {
  background: var(--green-dark);
  color: #182106;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-outline {
  background: transparent;
  border-color: rgba(255,255,255,0.7);
  color: #fff;
}
.btn-outline:hover {
  background: rgba(255,255,255,0.12);
  color: #fff;
  border-color: #fff;
}

/* ---------- Header / Nav ---------- */
.site-header {
  background: var(--blue);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.6rem;
  padding-bottom: 0.6rem;
  gap: 1rem;
}
.brand { display: inline-flex; align-items: center; }
.brand-logo { height: 62px; width: auto; }

.primary-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}
.primary-nav ul {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.primary-nav a:not(.btn) {
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.4rem 0.1rem;
  border-bottom: 2px solid transparent;
}
.primary-nav a:not(.btn):hover,
.primary-nav a:not(.btn):focus-visible {
  color: var(--green);
  border-bottom-color: var(--green);
}
.nav-cta { white-space: nowrap; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(155deg, var(--blue) 0%, var(--blue-dark) 62%, #24466f 100%);
  color: #fff;
  padding: 4rem 0 3.5rem;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 2.5rem;
}
.hero-copy, .hero-media { min-width: 0; }
.eyebrow, .section-eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  font-size: 0.82rem;
  color: var(--green);
  margin: 0 0 0.75rem;
}
.hero h1 {
  color: #fff;
  font-size: clamp(1.9rem, 3.4vw, 2.9rem);
  margin-bottom: 0.85rem;
}
.hero-lead {
  font-size: 1.08rem;
  color: #E7ECF4;
  max-width: 54ch;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; margin: 1.6rem 0 2.2rem; }
.hero-stats {
  display: flex;
  gap: 2.2rem;
  flex-wrap: wrap;
  border-top: 1px solid rgba(255,255,255,0.2);
  padding-top: 1.5rem;
}
.hero-stats li { display: flex; flex-direction: column; min-width: 0; }
.stat-num { font-size: 1.7rem; font-weight: 800; color: var(--green); }
.stat-label { font-size: 0.85rem; color: #D9E1EE; max-width: 16ch; }

.hero-media { display: flex; justify-content: center; align-items: center; }
.hero-media img {
  max-width: 320px;
  filter: drop-shadow(0 18px 34px rgba(0,0,0,0.28));
}

/* ---------- Sections ---------- */
.section { padding: 4.5rem 0; }
.section-alt { background: var(--white); }
.section h2 {
  font-size: clamp(1.55rem, 2.6vw, 2.1rem);
  max-width: 46ch;
}
.section-lead {
  max-width: 70ch;
  color: #55555A;
  font-size: 1.03rem;
}

/* ---------- Card grid ---------- */
.card-grid {
  display: grid;
  gap: 1.5rem;
  margin-top: 2.25rem;
}
.ndt-grid { grid-template-columns: repeat(3, 1fr); }
.welding-grid { grid-template-columns: repeat(2, 1fr); }
.team-grid { grid-template-columns: repeat(3, 1fr); }

.card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.75rem 1.5rem;
  box-shadow: var(--shadow-sm);
  border-top: 3px solid var(--green);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.card h3 { font-size: 1.08rem; margin-bottom: 0.5rem; }
.card p { color: #56565b; font-size: 0.95rem; margin-bottom: 0; }

.card-bordered { background: var(--off-white); box-shadow: none; border: 1px solid var(--border); border-top: 3px solid var(--blue); }

.card-icon {
  width: 48px; height: 48px;
  margin-bottom: 1rem;
  color: var(--blue);
}
.card-icon svg {
  width: 100%; height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.4;
}

/* ---------- Industrial consulting ---------- */
.industrial-inner { display: flex; }
.industrial-copy { max-width: 760px; }
.checklist { margin: 1.5rem 0 2rem; display: flex; flex-direction: column; gap: 0.9rem; }
.checklist li {
  position: relative;
  padding-left: 2rem;
  color: #45454a;
}
.checklist li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.15em;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--green);
}
.checklist li::after {
  content: "";
  position: absolute;
  left: 6px; top: 0.55em;
  width: 8px; height: 4px;
  border-left: 2px solid #24310a;
  border-bottom: 2px solid #24310a;
  transform: rotate(-45deg);
}

/* ---------- Advisory team profile cards ---------- */
.profile-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  border-left: 4px solid var(--green);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.profile-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.profile-header {
  background: var(--blue);
  color: #fff;
  font-weight: 700;
  font-size: 1.05rem;
  padding: 1.1rem 1.25rem;
}
.profile-body { padding: 1.1rem 1.25rem 1.4rem; }
.profile-role { font-weight: 600; color: var(--charcoal); margin-bottom: 0.2rem; }
.profile-detail { color: #6a6a6f; font-size: 0.92rem; margin-bottom: 0; }

/* ---------- Contact ---------- */
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}
.contact-list { display: flex; flex-direction: column; gap: 1.1rem; margin: 1.75rem 0; }
.contact-label {
  display: block;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--green-dark);
  font-weight: 700;
  margin-bottom: 0.2rem;
}
.contact-list a { color: var(--charcoal); font-weight: 600; }
.contact-list a:hover { color: var(--blue); }
.map-embed {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
}
.map-embed iframe { display: block; }

.contact-form {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  border-top: 4px solid var(--green);
}
.contact-form h3 { margin-bottom: 1.2rem; }
.form-row { margin-bottom: 1.1rem; display: flex; flex-direction: column; gap: 0.4rem; }
.form-row label { font-weight: 600; font-size: 0.92rem; color: var(--charcoal); }
.form-row input, .form-row select, .form-row textarea {
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--off-white);
  color: var(--charcoal);
  width: 100%;
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(59,107,168,0.18);
}
.form-submit { width: 100%; border: none; }
.form-status { margin-top: 0.9rem; font-weight: 600; font-size: 0.92rem; min-height: 1.2em; }
.form-status.success { color: var(--green-dark); }
.form-status.error { color: #b3261e; }

/* ---------- Footer ---------- */
.site-footer { background: var(--charcoal); color: #D6D6D8; }
.footer-inner {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1.2fr;
  gap: 2.5rem;
  padding: 3.5rem 0 2.5rem;
}
.footer-brand img { margin-bottom: 1rem; }
.footer-brand p { color: #B7B7BB; font-size: 0.92rem; max-width: 32ch; }
.footer-links h4, .footer-contact h4 {
  color: #fff;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}
.footer-links ul { display: flex; flex-direction: column; gap: 0.65rem; }
.footer-links a, .footer-contact a { color: var(--green); }
.footer-links a:hover, .footer-contact a:hover { color: #fff; }
.footer-contact address { color: #B7B7BB; font-size: 0.92rem; margin-bottom: 0.75rem; }
.footer-contact p { margin-bottom: 0.4rem; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding: 1.1rem 0;
}
.footer-bottom p { margin: 0; font-size: 0.85rem; color: #9C9CA0; text-align: center; }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 1024px) {
  .ndt-grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-media img { max-width: 240px; }
}

@media (max-width: 860px) {
  .nav-toggle { display: flex; }
  .primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--blue-dark);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem 1.25rem 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.28s ease;
  }
  .primary-nav.is-open { max-height: 640px; }
  .primary-nav ul { flex-direction: column; gap: 0; padding: 0.5rem 0; }
  .primary-nav ul li { border-top: 1px solid rgba(255,255,255,0.12); }
  .primary-nav ul li:first-child { border-top: none; }
  .primary-nav a:not(.btn) { display: block; padding: 0.85rem 0.1rem; }
  .nav-cta { margin-top: 0.75rem; text-align: center; }

  .hero-inner { grid-template-columns: 1fr; text-align: left; }
  .hero-media { order: -1; margin-bottom: 1rem; }
  .hero-media img { max-width: 170px; }

  .contact-inner { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .ndt-grid, .welding-grid, .team-grid { grid-template-columns: 1fr; }
  .hero { padding: 2.75rem 0 2.5rem; }
  .section { padding: 3rem 0; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { text-align: center; }
  .hero-stats { gap: 1.4rem; }
  .footer-inner { grid-template-columns: 1fr; }
  .brand-logo { height: 50px; }
}