/* ========================================================================
   ZH Group of Companies — Global Styles (Mobile-first)
   Theme: Luxury corporate, black + gold
   ======================================================================== */

/* CSS Variables */
:root {
  --bg: #0B0B0B;
  --gold: #D4AF37;
  --gold-accent: #FFD700;
  --text: #ffffff;
  --muted: #cccccc;
  color-scheme: dark;

  --container: 1200px;
  --radius: 14px;
  --shadow-soft: 0 8px 24px rgba(0,0,0,0.35);
  --shadow-hard: 0 16px 48px rgba(0,0,0,0.55);
  --focus-ring: 0 0 0 3px rgba(212,175,55,0.45);
}

/* Reset & Base */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
}
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  opacity: 0; /* For page fade-in */
  transition: opacity 450ms ease;
}
a { color: var(--gold-accent); text-decoration: none; }
a:hover { color: var(--gold); }
img { max-width: 100%; display: block; }

/* Accessible focus */
:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: 8px;
}

/* Containers & Utilities */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.2rem;
}
.section {
  padding: 64px 0;
}
.muted { color: var(--muted); }
.gold { color: var(--gold); }
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.06), transparent);
  margin: 24px 0;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-radius: 12px;
  font-weight: 600;
  color: #0B0B0B;
  background: linear-gradient(180deg, var(--gold-accent), var(--gold));
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(255,255,255,0.06);
}
.btn:hover { transform: translateY(-1px); }
.btn-outline {
  color: var(--text);
  background: transparent;
  border: 1px solid rgba(255,255,255,0.18);
}
.btn-outline:hover { border-color: var(--gold); color: var(--gold-accent); }

/* Equal-height cards using flex + min-height */
.cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 12px;
  padding: 20px;
  border-radius: var(--radius);
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  min-height: 160px;
  box-shadow: var(--shadow-soft);
}
.card h3 { margin: 0 0 8px; }
.card p { color: var(--muted); }

/* Header/Navbar (sticky) */
header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(11,11,11,0.80);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand img {
  height: 48px; /* Navbar logo recommended size */
  width: auto;
  border-radius: 8px;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.12), transparent 60%);
}
/* Bigger size for ZH Group logo specifically */
.brand img[alt="ZH Group Logo"] {
  height: 56px;
}
.menu {
  display: none;
  align-items: center;
  gap: 18px;
}
.menu a {
  color: var(--text);
  padding: 10px 8px;
  border-radius: 8px;
}
.menu a.active { color: var(--gold-accent); }
.hamburger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.14);
  color: var(--text);
  background: rgba(255,255,255,0.04);
}
.mobile-drawer {
  position: fixed;
  inset: 64px 0 auto 0;
  background: rgba(11,11,11,0.95);
  border-top: 1px solid rgba(255,255,255,0.1);
  transform: translateY(-120%);
  transition: transform 280ms ease;
}
.mobile-drawer.open { transform: translateY(0%); }
.mobile-drawer nav {
  display: grid;
  gap: 2px;
  padding: 12px;
}
.mobile-drawer a {
  padding: 16px;
  border-radius: 10px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
}

/* Navbar scroll shadow */
.nav-shadow {
  box-shadow: 0 6px 22px rgba(0,0,0,0.45);
}

/* Hero */
.hero {
  position: relative;
  min-height: calc(100vh - 64px);
  display: grid;
  align-items: center;
  padding: 48px 0;
}
.hero h1 {
  font-size: clamp(1.9rem, 4.2vw, 3.9rem);
  line-height: 1.08;
  margin: 0 0 18px;
  background: linear-gradient(90deg, var(--gold), var(--gold-accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p {
  color: var(--muted);
  margin-bottom: 12px;
  max-width: 70ch;
}
.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 18px;
}

/* CEO Spotlight */
.ceo {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
.ceo .portrait {
  width: 260px;
  height: 260px; /* Recommended size */
  border-radius: 50%;
  overflow: hidden;
  box-shadow: var(--shadow-hard);
  border: 2px solid rgba(255,255,255,0.08);
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.12), transparent 60%);
}
.ceo .details h3 {
  margin: 0;
  font-size: 1.4rem;
}
.ceo .details p { color: var(--muted); }

/* Governance & Why Choose */
.grid-2 { display: grid; grid-template-columns: 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr; gap: 16px; }
.grid-5 { display: grid; grid-template-columns: 1fr; gap: 16px; }
.grid-card {
  padding: 20px;
  border-radius: var(--radius);
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: var(--shadow-soft);
}
.grid-card h3 { margin: 0 0 8px; }
.grid-card p { color: var(--muted); }
.section p { max-width: 68ch; }

/* Corporate Structure Diagram */
.structure {
  display: grid;
  gap: 16px;
}
.structure .center {
  text-align: center;
  padding: 20px;
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  border: 1px solid rgba(255,255,255,0.14);
  box-shadow: var(--shadow-soft);
}
.branches {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
.branch {
  padding: 14px;
  border-radius: 12px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
}

/* Divisions summary cards with circular logo placeholders */
.division-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: center;
  padding: 16px;
  border-radius: var(--radius);
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
}
.logo-circle {
  width: 110px;
  height: 110px; /* Recommended size */
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at 40% 40%, rgba(255,255,255,0.12), transparent 60%);
  border: 2px solid rgba(255,255,255,0.08);
  overflow: hidden;
}
.logo-circle img {
  width: 90%;
  height: 90%;
  object-fit: contain;
}
.inline-logo {
  height: 22px;
  width: auto;
  margin-right: 8px;
  vertical-align: baseline;
  border-radius: 0;
  background: transparent;
  display: inline-block;
}
.logo-circle.fallback {
  color: var(--gold);
  font-weight: 700;
}

/* Testimonials */
.testimonials { display: grid; grid-template-columns: 1fr; gap: 16px; }
.testimonial {
  padding: 18px;
  border-radius: var(--radius);
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
}
.testimonial .role { color: var(--muted); font-size: 0.95rem; }

/* Counters */
.counters {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.counter {
  text-align: center;
  padding: 16px;
  border-radius: var(--radius);
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
}
.counter .num { font-size: 1.8rem; font-weight: 800; color: var(--gold-accent); }
.counter .label { color: var(--muted); }

/* CTA & Footer */
.cta {
  text-align: center;
  padding: 36px 20px;
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  border: 1px solid rgba(255,255,255,0.14);
  box-shadow: var(--shadow-soft);
}
footer {
  background: rgba(255,255,255,0.03);
  border-top: 1px solid rgba(255,255,255,0.08);
}
footer .foot {
  display: grid;
  gap: 10px;
  padding: 24px 0;
  justify-items: center;
  text-align: center;
}
footer .foot a { color: var(--muted); }
footer .foot .foot-col {
  display: grid;
  gap: 6px;
}
footer .foot h4 {
  margin: 0;
  font-size: 1rem;
  color: var(--gold);
}
footer .foot strong {
  grid-column: 1 / -1;
  font-size: 1.1rem;
  color: var(--gold);
  margin-bottom: 6px;
}
@media (min-width: 768px) {
  footer .foot {
    grid-template-columns: repeat(2, max-content);
    justify-content: center;
    column-gap: 32px;
  }
}
@media (min-width: 1024px) {
  footer .foot {
    grid-template-columns: repeat(3, max-content);
    justify-content: center;
    column-gap: 48px;
  }
}

/* Floating WhatsApp button */
.whatsapp {
  position: fixed;
  right: 18px;
  bottom: 18px;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(180deg, var(--gold-accent), var(--gold));
  box-shadow: var(--shadow-hard);
  z-index: 1000;
}
.whatsapp svg { width: 26px; height: 26px; fill: #0B0B0B; }
.whatsapp:hover { transform: translateY(-1px); }

/* Preloader */
.preloader {
  position: fixed;
  inset: 0;
  background: var(--bg);
  display: grid;
  place-items: center;
  z-index: 2000;
}
.loader {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 4px solid rgba(255,255,255,0.12);
  border-top-color: var(--gold);
  animation: spin 900ms linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 600ms ease, transform 600ms ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Scroll progress */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-accent));
  z-index: 3000;
}

/* Particle canvas */
#particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.12;
}
/* Animated gradient background layer */
.bg-anim {
  position: absolute;
  inset: 0;
  background: radial-gradient(1200px 600px at 20% 10%, rgba(212,175,55,0.08), transparent 70%),
              radial-gradient(800px 400px at 80% 60%, rgba(255,215,0,0.06), transparent 70%),
              linear-gradient(160deg, rgba(255,255,255,0.02), rgba(255,255,255,0.00));
  animation: glowShift 24s ease-in-out infinite alternate;
  pointer-events: none;
  opacity: 0.20;
}
@keyframes glowShift {
  0%   { transform: translate3d(0,0,0) scale(1); }
  50%  { transform: translate3d(-10px,6px,0) scale(1.02); }
  100% { transform: translate3d(12px,-8px,0) scale(1.03); }
}

/* Clients logos row */
.logos-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
  align-items: start;
}
.logos-row .logo-circle {
  width: 88px;
  height: 88px;
}
.logo-item {
  display: grid;
  justify-items: center;
  gap: 10px;
  padding: 14px;
  border-radius: 12px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
}
.logo-item figcaption {
  font-size: 0.92rem;
  color: var(--muted);
  text-align: center;
}
.logo-item:hover { transform: translateY(-1px); }

@media (min-width: 768px) {
  .logos-row { grid-template-columns: repeat(6, 1fr); }
}

/* Sections headings */
.section h2 {
  font-size: clamp(1.58rem, 2.8vw, 2.1rem);
  line-height: 1.1;
  margin: 0 0 16px;
}
.section .lead { font-size: 1.05rem; }

/* Forms */
form {
  display: grid;
  gap: 12px;
}
input, textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.04);
  color: var(--text);
}
select {
  width: 100%;
  padding: 12px 38px 12px 14px; /* extra space for arrow */
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.06);
  color: var(--text);
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='12' viewBox='0 0 24 24' fill='%23FFD700' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M7 10l5 5 5-5H7z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 12px;
}
select option {
  background-color: #0B0B0B;
  color: var(--text);
}
select::-ms-expand { display: none; }
select:focus, input:focus, textarea:focus {
  box-shadow: var(--focus-ring);
  outline: none;
}
label { font-weight: 600; }
.form-row { display: grid; grid-template-columns: 1fr; gap: 12px; }
.form-msg { font-size: 0.95rem; }
.success { color: #78e08f; }
.error { color: #ee5253; }
.steps {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}
.steps .active {
  border-color: var(--gold);
  color: var(--gold-accent);
}
fieldset {
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 12px;
  padding: 16px;
}
legend {
  color: var(--gold);
  font-weight: 700;
  padding: 0 8px;
}

/* Responsive Breakpoints */
@media (min-width: 768px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .menu { display: flex; }
  .hamburger { display: none; }
  .form-row { grid-template-columns: repeat(2, 1fr); }
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-5 { grid-template-columns: repeat(5, 1fr); }
  .counters { grid-template-columns: repeat(4, 1fr); }
  .ceo { grid-template-columns: auto 1fr; align-items: center; }
  .branches { grid-template-columns: repeat(5, 1fr); }
}
@media (min-width: 1024px) {
  .cards { grid-template-columns: repeat(3, 1fr); }
  .hero { padding: 64px 0; }
}
@media (max-width: 380px) {
  .container { padding: 0 0.9rem; }
  .brand img { height: 44px; }
  .brand strong { display: none; }
  .hero { min-height: auto; padding: 36px 0; }
  .logo-circle { width: 84px; height: 84px; }
  .btn { padding: 10px 14px; font-size: 0.95rem; }
  .counters { grid-template-columns: 1fr; }
}
@media (min-width: 1440px) {
  .container { max-width: 1280px; }
  .hero { padding: 80px 0; }
}