/* ===========================================================
   S&K Group Holdings Ltd — Corporate Navy theme
   Palette: Navy + Slate + Royal Blue + White
   =========================================================== */
:root {
  --navy: #1E3A8A; --navy-dark: #172554; --navy-light: #1E40AF;
  --royal: #2563EB; --royal-light: #3B82F6;
  --slate-900: #0F172A; --slate-700: #334155; --slate-500: #64748B;
  --slate-400: #94A3B8; --slate-300: #CBD5E1; --slate-200: #E2E8F0;
  --slate-100: #F1F5F9; --slate-50: #F8FAFC; --white: #FFFFFF;
  --accent: #F59E0B; --accent-dark: #D97706; --success: #059669;
  --serif: 'Playfair Display', Georgia, serif;
  --sans: 'Manrope', -apple-system, system-ui, sans-serif;
  --shadow-sm: 0 1px 2px rgba(15,23,42,0.06);
  --shadow: 0 4px 12px rgba(15,23,42,0.08);
  --shadow-lg: 0 12px 32px rgba(15,23,42,0.12);
  --shadow-xl: 0 20px 48px rgba(30,58,138,0.18);
  --radius: 10px; --radius-lg: 16px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--sans); font-size: 16px; line-height: 1.65; color: var(--slate-900); background: var(--white); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 1.25rem; }
a { color: var(--royal); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--navy); }
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 700; line-height: 1.2; color: var(--slate-900); letter-spacing: -0.02em; }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); margin-bottom: 1rem; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); margin-bottom: 1rem; }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.5rem); margin-bottom: 0.75rem; }
h4 { font-size: 1.1rem; margin-bottom: 0.5rem; }
p { margin-bottom: 1rem; }
.italic-serif { font-style: italic; color: var(--navy); }
.eyebrow { display: inline-block; font-size: 0.78rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--royal); margin-bottom: 1rem; }

/* SISTER SITE BANNER */
.sister-cta-banner { background: linear-gradient(135deg, var(--navy) 0%, var(--royal) 100%); color: var(--white); padding: 0.7rem 0; font-size: 0.92rem; font-weight: 500; border-bottom: 3px solid var(--accent); }
.sister-cta-banner .wrap { display: flex; align-items: center; justify-content: center; gap: 1rem; flex-wrap: wrap; }
.sister-cta-text { display: inline-flex; align-items: center; gap: 0.5rem; }
.sister-cta-text .bolt { color: var(--accent); font-size: 1.1rem; }
.sister-cta-btn { background: var(--accent); color: var(--slate-900); padding: 0.4rem 1rem; border-radius: 6px; font-weight: 700; font-size: 0.88rem; text-decoration: none; transition: all .2s ease; white-space: nowrap; }
.sister-cta-btn:hover { background: var(--white); color: var(--navy); transform: translateY(-1px); }

/* HEADER */
.site-header { background: var(--white); border-bottom: 1px solid var(--slate-200); position: sticky; top: 0; z-index: 100; box-shadow: var(--shadow-sm); }
.nav { display: flex; align-items: center; justify-content: space-between; padding: 0.5rem 0; gap: 1rem; }
.brand { display: flex; align-items: center; text-decoration: none; flex-shrink: 0; }
.brand-logo { height: 28px; width: auto; max-width: 150px; }
.nav-links { display: flex; gap: 1.75rem; list-style: none; }
.nav-links a { color: var(--slate-700); font-weight: 600; font-size: 0.95rem; text-decoration: none; position: relative; padding: 0.5rem 0; }
.nav-links a:hover { color: var(--navy); }
.nav-links a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: var(--navy); transition: width .25s ease; }
.nav-links a:hover::after { width: 100%; }
.nav-cta { display: flex; gap: 0.75rem; align-items: center; flex-shrink: 0; }
.btn { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.75rem 1.4rem; border-radius: 8px; font-weight: 700; font-size: 0.95rem; text-decoration: none; transition: all .2s ease; border: none; cursor: pointer; font-family: var(--sans); white-space: nowrap; }
.btn-primary { background: var(--navy); color: var(--white); box-shadow: var(--shadow); }
.btn-primary:hover { background: var(--navy-dark); color: var(--white); transform: translateY(-1px); box-shadow: var(--shadow-lg); }
.btn-secondary { background: var(--white); color: var(--navy); border: 2px solid var(--navy); }
.btn-secondary:hover { background: var(--navy); color: var(--white); }
.btn-accent { background: var(--accent); color: var(--slate-900); box-shadow: var(--shadow); }
.btn-accent:hover { background: var(--accent-dark); color: var(--white); transform: translateY(-1px); }
.btn .arrow { transition: transform .2s ease; }
.btn:hover .arrow { transform: translateX(3px); }
.mobile-toggle { display: none; background: transparent; border: 0; cursor: pointer; padding: 0.5rem; }
.mobile-toggle span { display: block; width: 24px; height: 2px; background: var(--slate-900); margin: 5px 0; }

/* HERO */
.hero { padding: 4rem 0 3rem; background: linear-gradient(180deg, var(--slate-50) 0%, var(--white) 100%); position: relative; overflow: hidden; }
.hero::before { content: ''; position: absolute; top: -100px; right: -100px; width: 400px; height: 400px; background: radial-gradient(circle, rgba(37,99,235,0.08) 0%, transparent 70%); border-radius: 50%; pointer-events: none; }
.hero .wrap { position: relative; z-index: 1; }
.hero h1 { color: var(--slate-900); }
.hero .lead { font-size: 1.18rem; color: var(--slate-700); max-width: 720px; margin-top: 1rem; }
.hero-cta-row { margin-top: 2rem; display: flex; gap: 0.75rem; flex-wrap: wrap; }
.tagline-pill { display: inline-block; background: var(--white); border: 1px solid var(--slate-200); color: var(--navy); font-weight: 700; font-size: 0.85rem; letter-spacing: 0.08em; text-transform: uppercase; padding: 0.45rem 1rem; border-radius: 999px; margin-bottom: 1rem; box-shadow: var(--shadow-sm); }

/* TRUST STRIP */
.trust-strip { background: var(--slate-900); color: var(--white); padding: 1.25rem 0; }
.trust-strip .wrap { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1rem; text-align: center; }
.trust-item { font-size: 0.85rem; font-weight: 600; color: var(--slate-300); display: flex; align-items: center; justify-content: center; gap: 0.5rem; }
.trust-item strong { color: var(--white); font-weight: 700; }
.trust-item::before { content: '\2713'; color: var(--accent); font-weight: 700; }

/* SECTIONS */
.section { padding: 4rem 0; }
.section-tight { padding: 2.5rem 0; }
.section-light { background: var(--slate-50); }
.section-navy { background: var(--navy); color: var(--white); }
.section-navy h2, .section-navy h3 { color: var(--white); }
.section-navy .eyebrow { color: var(--accent); }
.section-navy p { color: rgba(255,255,255,0.85); }
.section-header { text-align: center; max-width: 720px; margin: 0 auto 3rem; }
.section-header p { color: var(--slate-500); font-size: 1.1rem; }

/* INSTANT QUOTE BOX (sister site) */
.instant-quote-box { background: linear-gradient(135deg, var(--navy) 0%, var(--royal) 100%); color: var(--white); padding: 2.5rem; border-radius: var(--radius-lg); display: grid; grid-template-columns: 1fr auto; gap: 2rem; align-items: center; box-shadow: var(--shadow-xl); margin: 2rem 0; position: relative; overflow: hidden; }
.instant-quote-box::before { content: ''; position: absolute; top: -50px; right: -50px; width: 200px; height: 200px; background: radial-gradient(circle, rgba(245,158,11,0.2) 0%, transparent 70%); border-radius: 50%; }
.instant-quote-box .iq-content { position: relative; z-index: 1; }
.instant-quote-box h3 { color: var(--white); font-size: 1.6rem; margin-bottom: 0.5rem; }
.instant-quote-box p { color: rgba(255,255,255,0.92); margin-bottom: 0; font-size: 1rem; }
.instant-quote-box .iq-cta { position: relative; z-index: 1; display: flex; flex-direction: column; gap: 0.5rem; align-items: center; }
.instant-quote-box .iq-meta { font-size: 0.8rem; color: rgba(255,255,255,0.7); letter-spacing: 0.08em; text-transform: uppercase; }

/* SERVICE LOGO BLOCK */
.service-logo-block { background: var(--white); border: 1px solid var(--slate-200); border-radius: var(--radius-lg); padding: 1.5rem 2rem; display: grid; grid-template-columns: auto 1fr; gap: 1.5rem; align-items: center; box-shadow: var(--shadow); margin: 2rem 0; }
.service-logo-card { max-width: 180px; max-height: 120px; width: auto; height: auto; }
.service-logo-text .eyebrow { margin-bottom: 0.25rem; }
.service-logo-text h3 { margin-bottom: 0.25rem; }
.service-logo-text p { color: var(--slate-500); margin: 0; }

/* CARDS */
.cards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.25rem; }
.card { background: var(--white); border: 1px solid var(--slate-200); border-radius: var(--radius); padding: 1.5rem; transition: all .25s ease; text-decoration: none; color: inherit; display: block; }
.card:hover { border-color: var(--navy); transform: translateY(-3px); box-shadow: var(--shadow-lg); color: inherit; }
.card h3 { color: var(--slate-900); margin-bottom: 0.5rem; }
.card p { color: var(--slate-500); font-size: 0.93rem; margin: 0; }
.card .card-arrow { margin-top: 0.75rem; color: var(--navy); font-weight: 700; font-size: 0.9rem; display: inline-flex; align-items: center; gap: 0.25rem; }

/* FORMS */
.contact-form { background: var(--white); border: 1px solid var(--slate-200); border-radius: var(--radius-lg); padding: 2rem; box-shadow: var(--shadow); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-bottom: 1rem; }
.form-field { margin-bottom: 1rem; }
.form-field label { display: block; font-weight: 600; font-size: 0.9rem; margin-bottom: 0.4rem; color: var(--slate-700); }
.form-field input, .form-field select, .form-field textarea { width: 100%; padding: 0.75rem 0.9rem; border: 1.5px solid var(--slate-200); border-radius: 8px; font-family: var(--sans); font-size: 0.95rem; color: var(--slate-900); background: var(--white); transition: border-color .2s ease; }
.form-field input:focus, .form-field select:focus, .form-field textarea:focus { outline: none; border-color: var(--navy); box-shadow: 0 0 0 3px rgba(30,58,138,0.1); }

/* FAQ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { background: var(--white); border: 1px solid var(--slate-200); border-radius: var(--radius); margin-bottom: 0.75rem; overflow: hidden; }
.faq-item summary { padding: 1.1rem 1.3rem; cursor: pointer; font-weight: 600; color: var(--slate-900); list-style: none; display: flex; justify-content: space-between; align-items: center; font-size: 1rem; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; color: var(--navy); font-size: 1.5rem; font-weight: 300; transition: transform .2s ease; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .faq-body { padding: 0 1.3rem 1.2rem; color: var(--slate-500); }

/* FOOTER */
.site-footer { background: var(--slate-900); color: var(--slate-300); padding: 3.5rem 0 1.5rem; }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 2rem; margin-bottom: 2rem; }
.footer-brand .brand-logo-footer { height: 70px; width: auto; filter: brightness(0) invert(1); margin-bottom: 0.75rem; }
.footer-tagline { color: var(--accent); font-weight: 700; font-size: 0.85rem; letter-spacing: 0.1em; text-transform: uppercase; margin: 0.5rem 0 1rem; }
.footer-grid h4 { color: var(--white); font-family: var(--sans); font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 1rem; }
.footer-grid p, .footer-grid a { color: var(--slate-400); font-size: 0.92rem; text-decoration: none; display: block; margin-bottom: 0.5rem; }
.footer-grid a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid var(--slate-700); padding-top: 1.5rem; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; font-size: 0.83rem; color: var(--slate-400); }
.footer-bottom a { color: var(--slate-400); }

/* MOBILE STICKY BAR */
.mobile-bar { display: none; position: fixed; bottom: 0; left: 0; right: 0; background: var(--navy); z-index: 99; box-shadow: 0 -4px 12px rgba(0,0,0,0.3); }
.mobile-bar a { flex: 1; padding: 0.85rem 0.3rem; text-align: center; color: var(--white); text-decoration: none; font-size: 0.82rem; font-weight: 600; border-right: 1px solid rgba(255,255,255,0.15); }
.mobile-bar a:last-child { border-right: 0; }
.mobile-bar a.mobile-bar-accent { background: var(--accent); color: var(--slate-900); }

/* RESPONSIVE */
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; }
  .nav-cta .btn-secondary { display: none; }
  .mobile-toggle { display: block; }
  .trust-strip .wrap { grid-template-columns: repeat(2, 1fr); }
  .instant-quote-box { grid-template-columns: 1fr; text-align: center; }
  .service-logo-block { grid-template-columns: 1fr; text-align: center; }
  .service-logo-card { margin: 0 auto; }
  .form-row { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  body { padding-bottom: 64px; }
  .mobile-bar { display: flex; }
  .footer-grid { grid-template-columns: 1fr; }
  .brand-logo { height: 24px; max-width: 130px; }
  .sister-cta-banner { font-size: 0.82rem; padding: 0.55rem 0; }
  .sister-cta-banner .wrap { gap: 0.6rem; }
  .sister-cta-btn { padding: 0.35rem 0.8rem; font-size: 0.82rem; }
  .hero { padding: 2.5rem 0 2rem; }
  .section { padding: 2.5rem 0; }
  .instant-quote-box { padding: 1.75rem 1.25rem; }
}

/* ============ LEGACY CLASS SUPPORT ============ */

/* Footer layout (legacy class names) */
.footer-top {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 2rem;
}
.footer-brand-block { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-brand .footer-brand-logo {
  height: 64px;
  width: auto;
  margin-bottom: 0.5rem;
  filter: brightness(0) invert(1);
}
.footer-strap {
  color: var(--slate-400);
  font-size: 0.92rem;
  margin: 0.5rem 0 1rem;
  max-width: 360px;
}
.footer-contact { display: flex; flex-direction: column; gap: 0.25rem; }
.footer-contact a {
  color: var(--slate-300);
  font-size: 0.92rem;
  text-decoration: none;
  display: block;
  margin-bottom: 0.35rem;
  transition: color .2s ease;
}
.footer-contact a:hover { color: var(--accent); }
.footer-col h5 {
  color: var(--white);
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 0.4rem; }
.footer-col a {
  color: var(--slate-400);
  font-size: 0.91rem;
  text-decoration: none;
  transition: color .2s ease;
}
.footer-col a:hover { color: var(--accent); }

.footer-tagline-banner {
  background: linear-gradient(90deg, var(--navy) 0%, var(--royal) 100%);
  color: var(--white);
  padding: 0.65rem 0;
  text-align: center;
  margin-bottom: 0;
}
.footer-tagline-banner span {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
}

/* Service grid (legacy) */
.svc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin: 2rem 0;
}
.svc-card {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: block;
  text-decoration: none;
  color: inherit;
  transition: all .25s ease;
  position: relative;
}
.svc-card:hover {
  border-color: var(--navy);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  color: inherit;
}
.svc-card h3 { color: var(--slate-900); margin-bottom: 0.4rem; font-size: 1.1rem; }
.svc-card p { color: var(--slate-500); font-size: 0.9rem; margin: 0; }
.svc-card-logo {
  max-width: 80px;
  max-height: 60px;
  margin-bottom: 0.75rem;
}
.svc-link {
  margin-top: 0.75rem;
  color: var(--navy);
  font-weight: 700;
  font-size: 0.88rem;
  display: inline-block;
}

/* Trust list (legacy) */
.trust-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  list-style: none;
  margin: 2rem 0;
}
.trust-list li {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius);
  padding: 1rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--slate-700);
  text-align: center;
}
.trust-list li strong { color: var(--navy); display: block; font-size: 1.4rem; margin-bottom: 0.25rem; }

/* Forms (legacy) */
.quote-form {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow);
}
.form-note {
  color: var(--slate-500);
  font-size: 0.85rem;
  margin-top: 0.5rem;
}
.form-submit {
  background: var(--navy);
  color: var(--white);
  border: 0;
  padding: 0.85rem 2rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: all .2s ease;
}
.form-submit:hover {
  background: var(--royal);
  transform: translateY(-1px);
}

/* Nav phone */
.nav-phone {
  color: var(--navy);
  font-weight: 700;
  font-size: 0.92rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.nav-phone:hover { color: var(--royal); }

/* Outlined button */
.btn-outline {
  background: transparent;
  color: var(--navy);
  border: 2px solid var(--slate-300);
  padding: 0.75rem 1.4rem;
  border-radius: 8px;
  font-weight: 700;
  text-decoration: none;
  transition: all .2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.btn-outline:hover {
  border-color: var(--navy);
  background: var(--navy);
  color: var(--white);
}

/* Mobile bar (legacy class compatibility) */
.mobile-bar-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: 100%;
}
.mobile-btn {
  padding: 0.85rem 0.3rem;
  text-align: center;
  color: var(--white);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 600;
  border-right: 1px solid rgba(255,255,255,0.15);
  display: block;
}
.mobile-btn:last-child { border-right: 0; }
.mobile-call { background: var(--navy); color: var(--white); }
.mobile-whatsapp { background: var(--royal); color: var(--white); }
.mobile-quote { background: var(--accent); color: var(--slate-900); }

@media (max-width: 900px) {
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .footer-top { grid-template-columns: 1fr; }
}