/* ============================================================
   STF WEBSITE — SHARED STYLES v3.0
   ============================================================ */

/* RESET */
* { box-sizing: border-box; margin: 0; padding: 0; }

/* BASE */
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 15px;
  line-height: 1.6;
  color: #3A3F47;
  background: #FFFFFF;
}

/* COLOURS */
:root {
  --orange:     #E8650A;
  --dark:       #3A3F47;
  --mid:        #6B7280;
  --light-bg:   #F4F4F5;
  --border:     rgba(0,0,0,0.12);
  --border-mid: rgba(0,0,0,0.22);
}

/* TOPBAR — compliance bar with readable text */
.topbar {
  background: #2C2F35;
  color: #B0B5BC;
  font-size: 11px;
  letter-spacing: 0.04em;
  text-align: center;
  padding: 6px 40px;
  font-weight: 500;
}

/* NAV — sticky */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  height: 64px;
  border-bottom: 1px solid var(--border);
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 200;
}

/* Logo */
.nav-logo { display: flex; align-items: center; flex-shrink: 0; text-decoration: none; }
.nav-logo-full { display: flex; align-items: center; flex-shrink: 0; text-decoration: none; }

.site-logo-full { display: block; width: auto; object-fit: contain; }
.site-logo-full-header { height: 44px; width: auto; border-radius: 5px; display: block; }

/* Nav links */
.nav-links { display: flex; gap: 28px; margin-left: auto; }
.nav-links a {
  font-size: 13px; color: var(--mid);
  text-decoration: none; font-weight: 400; letter-spacing: 0.01em;
}
.nav-links a:hover, .nav-links a.active { color: var(--orange); }

.nav-cta {
  padding: 8px 18px; background: var(--orange);
  color: #fff; border-radius: 5px;
  font-size: 13px; font-weight: 600; text-decoration: none;
  margin-left: 32px; white-space: nowrap;
}

/* HAMBURGER */
.nav-hamburger {
  display: none; flex-direction: column; gap: 5px;
  cursor: pointer; padding: 4px; background: none; border: none;
}
.nav-hamburger span { display: block; width: 22px; height: 2px; background: var(--dark); border-radius: 2px; }
.nav-mobile {
  display: none; flex-direction: column; background: #fff;
  border-bottom: 1px solid var(--border); padding: 12px 20px 20px;
}
.nav-mobile.open { display: flex; }
.nav-mobile a {
  font-size: 14px; color: var(--mid); text-decoration: none;
  padding: 10px 0; border-bottom: 1px solid var(--border);
}
.nav-mobile a:last-of-type { border-bottom: none; }
.nav-mobile a:hover, .nav-mobile a.active { color: var(--orange); }
.nav-mobile-cta {
  margin-top: 14px; display: block; padding: 10px 20px;
  background: var(--orange); color: #fff !important;
  border-radius: 5px; font-size: 13px; font-weight: 600;
  text-decoration: none; text-align: center; border-bottom: none !important;
}

/* SECTIONS */
.sec { padding: 44px 40px; border-bottom: 1px solid var(--border); }
.sec-alt { background: var(--light-bg); }
.sec-label {
  font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--orange);
  font-weight: 600; margin-bottom: 8px;
}
.sec h2 { font-size: 26px; font-weight: 500; margin-bottom: 14px; line-height: 1.25; }
.sec-intro {
  font-size: 15px; color: var(--mid);
  max-width: 520px; line-height: 1.7; margin-bottom: 28px;
}

/* PAGE HEADER */
.page-header { padding: 36px 40px 32px; border-bottom: 1px solid var(--border); }
.eyebrow {
  font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--orange);
  font-weight: 600; margin-bottom: 10px;
}
.page-header h1 {
  font-size: 34px; font-weight: 500;
  line-height: 1.2; max-width: 580px; margin-bottom: 12px;
}
.page-header p { font-size: 15px; color: var(--mid); max-width: 520px; line-height: 1.75; }

/* BUTTONS */
.btn-p {
  padding: 10px 22px; background: var(--orange);
  color: #fff; border-radius: 5px;
  font-size: 14px; font-weight: 600; text-decoration: none;
  display: inline-block;
}
.btn-s {
  padding: 10px 22px; background: transparent;
  color: var(--dark); border: 1px solid var(--border-mid);
  border-radius: 5px; font-size: 14px; text-decoration: none;
  display: inline-block;
}

/* FOOTER */
.footer { padding: 40px 40px 0; border-top: 1px solid var(--border); }
.footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 0.8fr;
  gap: 40px; margin-bottom: 28px; align-items: start;
}
.footer-addr { font-size: 13px; color: var(--mid); line-height: 1.85; }
.footer-col h4 {
  font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.06em; color: #9CA3AF;
  font-weight: 500; margin-bottom: 12px;
}
.footer-col a { display: block; font-size: 13px; color: var(--mid); text-decoration: none; margin-bottom: 7px; }
.footer-col a:hover { color: var(--orange); }
.footer-bottom {
  border-top: 1px solid var(--border); padding: 18px 0 24px;
  display: flex; justify-content: space-between;
  align-items: flex-end; gap: 24px;
}
.footer-tagline { font-size: 13px; font-weight: 600; margin-bottom: 4px; }
.footer-legal { font-size: 12px; color: #9CA3AF; line-height: 1.6; }

/* Footer logo */
.footer-logo-full { display: inline-flex; margin-bottom: 14px; text-decoration: none; }
.site-logo-full-footer { height: 40px; width: auto; border-radius: 5px; display: block; }

/* RESPONSIVE — tablet */
@media (max-width: 1024px) {
  .ethos-grid { grid-template-columns: repeat(2, 1fr) !important; }
  .diff-grid { grid-template-columns: repeat(2, minmax(0,1fr)) !important; }
  .report-grid { grid-template-columns: repeat(2, 1fr) !important; }
  .referral-box { grid-template-columns: 1fr !important; gap: 20px !important; }
  .intro-grid { grid-template-columns: repeat(2, 1fr) !important; }
  .svc-detail-inner { grid-template-columns: 1fr !important; gap: 24px !important; }
  .two-col { grid-template-columns: 1fr !important; gap: 24px !important; }
  .reg-grid { grid-template-columns: 1fr !important; gap: 24px !important; }
  .contact-grid { grid-template-columns: 1fr !important; gap: 32px !important; }
  .doc-body { grid-template-columns: 1fr !important; }
  .sidebar { display: none !important; }
  .field-row { grid-template-columns: 1fr 1fr; }
}

/* RESPONSIVE — mobile */
@media (max-width: 768px) {
  .topbar { padding: 5px 16px; }
  .nav { padding: 0 20px; height: 56px; }
  .nav-links, .nav-cta { display: none; }
  .nav-hamburger { display: flex; }
  .sec { padding: 28px 20px; }
  .page-header { padding: 24px 20px 20px; }
  .page-header h1 { font-size: 26px; }
  .footer { padding: 28px 20px 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 10px; }
  .who-grid { grid-template-columns: 1fr !important; }
  .svc-grid { grid-template-columns: 1fr !important; }
  .ethos-grid { grid-template-columns: repeat(2, 1fr) !important; }
  .report-grid { grid-template-columns: 1fr !important; }
  .diff-grid { grid-template-columns: 1fr !important; }
  .intro-grid { grid-template-columns: 1fr !important; }
  .suited-grid { grid-template-columns: 1fr !important; }
  .field-row { grid-template-columns: 1fr !important; }
  .cta-steps { flex-wrap: wrap !important; gap: 10px !important; white-space: normal !important; }
  .site-logo-full-header { height: 36px; }
  .site-logo-full-footer { height: 34px; }
}

@media (max-width: 480px) {
  .page-header h1 { font-size: 22px; }
  .sec h2 { font-size: 21px; }
}

/* MOBILE MENU FIX — anchor dropdown to sticky bar on scroll */
@media (max-width: 768px) {
  .nav-mobile {
    position: fixed;
    top: 56px;            /* matches mobile .nav height */
    left: 0;
    right: 0;
    z-index: 199;         /* just below the nav bar (200), above page content */
    max-height: calc(100vh - 56px);
    overflow-y: auto;
    box-shadow: 0 12px 24px rgba(0,0,0,0.12);
  }
}