:root {
  --accent: #0b6efd;
  --dark: #0f1724;
  --muted: #6b7280;
  --header-h: 64px;
  --iso-h: 48px;
  --transition: 280ms;
  --max-width: 1200px;
}
* { box-sizing: border-box; margin:0; padding:0; }
body { font-family: Inter, Arial, sans-serif; color: var(--dark); background:#fff; }
a { color: inherit; text-decoration: none; }

/* ===================
   ISO BAR
   =================== */
.iso-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 48px;
  display: flex;
  gap: 24px;
  justify-content: center;
  align-items: center;
  background: #fff;
  transition: all 0.4s ease;
  z-index: 1000;
}
.iso-bar.hidden {
  opacity: 0;
  pointer-events: none;
  transform: translateY(-100%);
}
.iso-item {
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
}
.iso-item img {
  width:32px;
  height:32px;
  object-fit:contain;
  display:block;
}
body.scrolled .iso-bar {
  opacity:0;
  pointer-events:none;
}

/* Main Header */
.main-header {
  position: fixed;
  top: 48px; /* start below ISO bar */
  left: 0;
  width: 100%;
  height: 64px;
  display: flex;
  justify-content: center;
  background: #fff;
  z-index: 999;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  transition: all 0.4s ease;
}
.main-header.scrolled {
  top: 0; /* move up when ISO bar hides */
  opacity: 0.97;
}

body.scrolled .main-header {
  top:0;
  opacity:0.95;
}
.header-inner {
  max-width: var(--max-width);
  width:100%;
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:0 20px;
}

/* ===================
   LOGO (with snake effect)
   =================== */
.brand {
  position: relative;
  display: inline-block;
}
.brand .logo-img {
  width:140px;
  height:auto;
  object-fit:contain;
  display:block;
  box-shadow:0 0 18px rgba(0,0,128,0.6);
  border-radius:50%;
  padding:8px;
  background:#fff;
  position:relative;
  z-index:2;
}
.brand::after {
  content:"";
  position:absolute;
  top:-8px; left:-8px; right:-8px; bottom:-8px;
  border:3px dashed navy;
  border-radius:50%;
  animation: snake-spin 12s linear infinite;
  z-index:1;
}
@keyframes snake-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ===================
   NAVIGATION
   =================== */
nav.primary {
  display:flex;
  gap:18px;
  margin-left:auto;
}
nav.primary a {
  padding:8px 12px;
  font-weight:600;
  border-radius:6px;
  transition: background 0.3s ease, color 0.3s ease;
}
nav.primary a:hover {
  background: navy;
  color: #fff;
}

/* Hamburger Button */
.hamburger {
  display:none;
  background:none;
  border:none;
  cursor:pointer;
  font-size:26px;
  color:navy;
}

/* Mobile Nav */
.mobile-nav {
  display: none;
  flex-direction: column;
  background: #fff;
  padding: 15px;
  position: absolute;
  top: 100%;
  right: 0;
  width: 220px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}
.mobile-nav.active {
  display: flex;
}
.mobile-nav a {
  margin: 10px 0;
  text-decoration: none;
  color: navy;
  font-weight: 600;
  transition: color 0.3s ease;
}
.mobile-nav a:hover {
  color: #ff4444;
}
/* ===================
   RESPONSIVE BEHAVIOR
   =================== */
@media(max-width:880px){
  nav.primary { display:none; }
  .hamburger { display:block; }

  /* smaller logo on mobile */
  .brand .logo-img {
    width:100px;
    padding:6px;
  }
  .brand::after {
    top:-6px; left:-6px; right:-6px; bottom:-6px;
  }
}
@media(min-width:881px){
  .hamburger { display:none; }
  .mobile-nav { display:none !important; }
}

/* ===================
   ABOUT SECTION
   =================== */
.about {
  padding:80px 20px;
  background:#f9fafb;
}
.about-inner {
  max-width:1200px;
  margin:0 auto;
  display:flex;
  align-items:stretch;
  justify-content:space-between;
  gap:40px;
}

/* Left: Image */
.about-image {
  flex:1 1 45%;
  display:flex;
  max-width:500px; /* ✅ force reduce image size for professionalism */
}
.about-image img {
  width:100%;
  height:100%;
  object-fit:cover;
  border-radius:12px;
  box-shadow:0 6px 18px rgba(0,0,0,0.15);
}

/* Right: Content */
.about-content {
  flex:1 1 55%;
  display:flex;
  flex-direction:column;
  justify-content:center;
}
.about-content h2 {
  font-size:32px;
  color:navy;
  margin-bottom:20px;
  position:relative;
}
.about-content h2::after {
  content:"";
  display:block;
  width:60px;
  height:4px;
  background:navy;
  margin-top:8px;
  border-radius:2px;
}
.about-content p {
  font-size:17px;
  line-height:1.7;
  color:#333;
  text-align:justify;
}

/* Responsive */
@media(max-width:880px){
  .about-inner {
    flex-direction:column;
    align-items:center;
  }
  .about-image {
    max-width:100%;
  }
  .about-image img {
    height:auto;
  }
  .about-content {
    text-align:center;
    margin-top:20px;
  }
  .about-content h2::after {
    margin-left:auto;
    margin-right:auto;
  }
}

/* ===================
   FADE-IN + SLIDE ANIMATIONS
   =================== */
.fade-left, .fade-right {
  opacity:0;
  transform:translateX(60px);
  transition:all 1s ease;
}
.fade-left {
  transform:translateX(-60px);
}
.fade-right {
  transform:translateX(60px);
}
.fade-in {
  opacity:1;
  transform:translateX(0);
}
.about {
  padding:80px 20px;
  background:#f9fafb;
}
.about-inner {
  max-width:1200px;
  margin:0 auto;
  display:flex;
  align-items:stretch;
  justify-content:space-between;
  gap:40px;
}
.about-image {
  flex:1 1 45%;
  max-width:500px;
  display:flex;
}
.about-image img {
  width:100%;
  border-radius:12px;
  object-fit:cover;
  box-shadow:0 6px 18px rgba(0,0,0,0.15);
}
.about-content {
  flex:1 1 55%;
  display:flex;
  flex-direction:column;
  justify-content:center;
}
.about-content h2 {
  font-size:32px;
  color:navy;
  margin-bottom:20px;
}
.about-content p {
  font-size:17px;
  line-height:1.7;
  color:#333;
  text-align:justify;
}

/* Animations */
.fade-left, .fade-right { opacity:0; transition:all 1s ease; }
.fade-left { transform:translateX(-60px); }
.fade-right { transform:translateX(60px); }
.fade-in { opacity:1; transform:translateX(0); }

@media(max-width:880px){
  .about-inner { flex-direction:column; align-items:center; }
  .about-image { max-width:100%; }
  .about-content { text-align:center; margin-top:20px; }
}
/* About Us Button */
.btn-about {
  display:inline-block;
  margin-top:20px;
  padding:12px 26px;
  background:navy;
  color:#fff;
  font-size:16px;
  font-weight:600;
  border-radius:30px;
  text-decoration:none;
  transition:all 0.3s ease;
  box-shadow:0 4px 12px rgba(0,0,0,0.15);
}
.btn-about:hover {
  background:#001f4d;
  transform:translateY(-2px);
  box-shadow:0 6px 16px rgba(0,0,0,0.2);
}