:root {
  /* Premium Industrial Palette */
  --clr-primary: #dc2626; /* Deep Industrial Red */
  --clr-primary-hover: #b91c1c;
  --clr-secondary: #020617; /* Slate 950 - Stark Black/Blue */
  --clr-secondary-light: #0f172a; /* Slate 900 */
  --clr-accent: #64748b; /* Steel/Slate 500 */
  --clr-text-main: #0f172a;
  --clr-text-muted: #475569;
  --clr-bg-light: #f8fafc;
  --clr-white: #ffffff;
  
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --font-heading: 'Outfit', 'Inter', sans-serif;
  
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.02), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 10px 30px -5px rgba(2, 6, 23, 0.05), 0 4px 10px -2px rgba(2, 6, 23, 0.03);
  --shadow-lg: 0 20px 40px -5px rgba(2, 6, 23, 0.1), 0 8px 16px -4px rgba(2, 6, 23, 0.05);
  --transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  --glass: cubic-bezier(0.16, 1, 0.3, 1);
  --border-radius: 12px;
}

/* Reset & Basics */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  color: var(--clr-text-main);
  background-color: var(--clr-bg-light);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); font-weight: 700; color: var(--clr-secondary); }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

/* Utilities */
.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
.text-center { text-align: center; }
.section-padding { padding: 100px 0; }
.bg-white { background-color: var(--clr-white); }
.bg-dark { background-color: var(--clr-secondary); color: var(--clr-white); }
.text-primary { color: var(--clr-primary); }
.font-weight-bold { font-weight: 700; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 36px;
  font-weight: 600;
  border-radius: 8px; /* Slightly sharper for industrial feel */
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-size: 0.95rem;
  letter-spacing: 0.5px;
  font-family: var(--font-heading);
}
.btn-primary { background: var(--clr-primary); color: var(--clr-white); box-shadow: 0 4px 14px 0 rgba(220, 38, 38, 0.3); }
.btn-primary:hover, .btn-primary:focus { background: var(--clr-primary-hover); transform: translateY(-3px); box-shadow: 0 8px 25px rgba(220, 38, 38, 0.4); }
.btn-outline { border: 2px solid var(--clr-primary); color: var(--clr-primary); background: transparent; }
.btn-outline:hover, .btn-outline:focus { background: var(--clr-primary); color: var(--clr-white); box-shadow: 0 8px 25px rgba(220, 38, 38, 0.2); }

/* Top Bar */
.top-bar {
  background: var(--clr-secondary);
  color: #94a3b8;
  padding: 8px 0;
  font-size: 0.85rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.top-bar-content { display: flex; justify-content: space-between; align-items: center; }
.top-bar-info { display: flex; gap: 20px; }
.top-bar-info a { display: flex; align-items: center; gap: 6px; }
.top-bar-info a:hover { color: var(--clr-white); }
.top-bar-social { display: flex; gap: 15px; }
.top-bar-social a:hover { color: var(--clr-white); transform: scale(1.1); }

@media (max-width: 640px) {
  .top-bar-social { display: none; }
  .top-bar-content { justify-content: center; }
}

/* Header & Navbar */
.site-header {
  position: fixed;
  top: 0; left: 0; width: 100%;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(226, 232, 240, 0.5);
  z-index: 1000;
  transition: var(--transition);
}
.site-header.scrolled .top-bar { display: none; }
.site-header .nav-main { padding: 20px 0; transition: var(--transition); }
.site-header.scrolled .nav-main { padding: 12px 0; background: rgba(255, 255, 255, 0.85); box-shadow: var(--shadow-sm); }
.nav-container { display: flex; justify-content: space-between; align-items: center; }
.brand-logo img { max-height: 48px; width: auto; transition: var(--transition); }
.desktop-nav { display: flex; gap: 36px; align-items: center; }
.desktop-nav a { font-weight: 500; font-size: 0.95rem; color: var(--clr-secondary); position: relative; font-family: var(--font-heading); }
.desktop-nav a.btn { color: var(--clr-white); }
.desktop-nav a:not(.btn)::after {
  content: '';
  position: absolute;
  width: 0; height: 2px;
  bottom: -6px; left: 0;
  background-color: var(--clr-primary);
  transition: width 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.desktop-nav a:not(.btn):hover::after, .desktop-nav a:not(.btn).active::after { width: 100%; }
.desktop-nav a:not(.btn):hover, .desktop-nav a:not(.btn).active { color: var(--clr-primary); }

/* ── Mega Menu ─────────────────────────────────────── */
.dropdown { position: relative; display: inline-block; }
.dropdown-toggle { display: flex; align-items: center; gap: 6px; }
.dropdown-toggle svg { transition: transform 0.3s; }
.dropdown:hover .dropdown-toggle svg { transform: rotate(180deg); }

.mega-menu {
  position: absolute;
  left: 50%;
  top: 100%;
  transform: translateX(-50%) translateY(10px);
  background: var(--clr-white);
  min-width: 800px;
  box-shadow: 0 20px 60px rgba(2,6,23,0.15);
  border-top: 2px solid var(--clr-primary);
  border-radius: 8px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s cubic-bezier(0.16,1,0.3,1);
  z-index: 900;
  display: flex;
  overflow: hidden;
}
.dropdown:hover .mega-menu,
.mega-menu:hover {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* Left panel — categories */
.mega-cats {
  width: 260px;
  flex-shrink: 0;
  background: var(--clr-bg-light);
  border-right: 1px solid #e2e8f0;
  padding: 16px 0;
}
.mega-cat-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--clr-secondary);
  cursor: pointer;
  transition: all 0.2s;
  border-left: 3px solid transparent;
  font-family: var(--font-heading);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.mega-cat-item:hover,
.mega-cat-item.active {
  background: var(--clr-white);
  color: var(--clr-primary);
  border-left-color: var(--clr-primary);
}
.mega-cat-item svg { flex-shrink: 0; }

/* Right panel — products */
.mega-products-wrap {
  flex: 1;
  padding: 24px 32px;
  min-height: 300px;
  max-height: 480px;
  overflow-y: auto;
}
.mega-panel { display: none; }
.mega-panel.active {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 8px;
  animation: megaFadeIn 0.25s ease;
}
@keyframes megaFadeIn { from{opacity:0;transform:translateX(6px)} to{opacity:1;transform:translateX(0)} }

.mega-product-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.88rem;
  color: var(--clr-secondary);
  transition: all 0.2s;
  border: 1px solid transparent;
}
.mega-product-link::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--clr-accent);
  flex-shrink: 0;
  transition: background 0.2s;
}
.mega-product-link:hover {
  background: rgba(220,38,38,0.05);
  border-color: rgba(220,38,38,0.15);
  color: var(--clr-primary);
}
.mega-product-link:hover::before { background: var(--clr-primary); }

.mega-footer {
  border-top: 1px solid #e2e8f0;
  padding: 14px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--clr-bg-light);
}
.mega-footer a {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--clr-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}
.mega-footer a:hover { gap: 10px; }

/* ── Mobile accordion ────────────────────────────── */
.mobile-cat-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 16px;
  font-weight: 700;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--clr-secondary);
  cursor: pointer;
  border-radius: 8px;
  transition: background 0.2s;
  font-family: var(--font-heading);
}
.mobile-cat-toggle:hover { background: var(--clr-bg-light); }
.mobile-cat-toggle svg { transition: transform 0.3s; }
.mobile-cat-toggle.open svg { transform: rotate(180deg); }
.mobile-cat-body {
  display: none;
  flex-direction: column;
  padding: 0 0 8px 16px;
}
.mobile-cat-body.open { display: flex; }
.mobile-cat-body a {
  padding: 8px 10px;
  font-size: 0.9rem;
  border-radius: 6px;
  color: var(--clr-text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}
.mobile-cat-body a::before {
  content:'';
  width:5px;height:5px;
  border-radius:50%;
  background:var(--clr-accent);
  flex-shrink:0;
}
.mobile-cat-body a:hover { color: var(--clr-primary); }

/* Mobile Menu Toggle */
.menu-toggle {
  display: none; width: 40px; height: 40px;
  background: var(--clr-bg-light); border: none; border-radius: 8px;
  color: var(--clr-secondary); cursor: pointer;
  align-items: center; justify-content: center; font-size: 1.25rem;
}
.mobile-nav {
  display: none; position: absolute; top: 100%; left: 0; width: 100%;
  background: var(--clr-white); flex-direction: column; padding: 20px;
  box-shadow: var(--shadow-lg); border-top: 1px solid #eee;
}
.mobile-nav.active { display: flex; }
.mobile-nav a { padding: 16px; border-radius: 8px; transition: var(--transition); }
.mobile-nav a:hover { background: var(--clr-bg-light); color: var(--clr-primary); }

@media (max-width: 768px) {
  .desktop-nav { display: none; }
  .menu-toggle { display: flex; }
}

/* Hero Section (Swiper) */
.hero-slider-section {
  margin-top: 70px;
  position: relative;
}
.hero-swiper {
  width: 100%;
  height: clamp(80vh, 100vh, 800px);
}
.swiper-slide.hero {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-white);
  padding: 0 20px;
  text-align: center;
  background-position: center;
  background-size: cover;
}
.swiper-slide.hero .container {
  max-width: 900px;
  position: relative;
  z-index: 10;
}
.swiper-slide.hero h1 { font-size: clamp(2.5rem, 6vw, 5.5rem); margin-bottom: 24px; line-height: 1.1; letter-spacing: -0.03em; color: var(--clr-white); font-weight: 800; text-shadow: 0 4px 12px rgba(0,0,0,0.5); }
.swiper-slide.hero p { font-size: clamp(1.1rem, 2.5vw, 1.3rem); margin-bottom: 48px; max-width: 720px; margin-inline: auto; color: #f1f5f9; font-weight: 400; opacity: 0.95; text-shadow: 0 2px 8px rgba(0,0,0,0.5); }
.cta-group { display: flex; gap: 20px; justify-content: center; }

/* Swiper Overrides */
.swiper-pagination-bullet { width: 12px; height: 12px; background: var(--clr-white); opacity: 0.5; transition: all 0.3s ease; }
.swiper-pagination-bullet-active { width: 32px; border-radius: 6px; background: var(--clr-primary); opacity: 1; }
.swiper-button-next, .swiper-button-prev { color: var(--clr-white); opacity: 0; transition: opacity 0.3s; }
.hero-swiper:hover .swiper-button-next, .hero-swiper:hover .swiper-button-prev { opacity: 0.8; }
.swiper-button-next:hover, .swiper-button-prev:hover { color: var(--clr-primary); opacity: 1 !important; transform: scale(1.1); }

@media (max-width: 480px) { .cta-group { flex-direction: column; } }

/* Grid Systems */
.grid { display: grid; gap: 32px; }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(380px, 1fr)); }

/* Cards */
.card {
  background: var(--clr-white);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  border: 1px solid rgba(226, 232, 240, 0.6);
  display: flex;
  flex-direction: column;
}
.card:hover {
  transform: translateY(-8px) scale(1.01);
  box-shadow: var(--shadow-lg);
  border-color: rgba(220, 38, 38, 0.2);
}
.card-img {
  aspect-ratio: 16/10;
  height: auto;
  background-color: #f1f5f9;
  overflow: hidden;
  position: relative;
}
.card-img::after {
  content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  background: linear-gradient(to bottom, transparent 60%, rgba(2, 6, 23, 0.05));
  pointer-events: none;
}
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s var(--glass); }
.card:hover .card-img img { transform: scale(1.08); }
.card-body { padding: 40px 32px; flex-grow: 1; display: flex; flex-direction: column; background: linear-gradient(to bottom, #ffffff, #fdfdfe); }
.card-title { font-size: 1.35rem; margin-bottom: 12px; color: var(--clr-secondary); font-weight: 700; letter-spacing: -0.01em; transition: color 0.3s; }
.card:hover .card-title { color: var(--clr-primary); }
.card-text { color: var(--clr-text-muted); margin-bottom: 32px; font-size: 1rem; line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

/* Features & Services */
.feature-icon {
  width: 64px; height: 64px;
  background: rgba(220, 38, 38, 0.08);
  color: var(--clr-primary);
  border-radius: 14px;
  display: flex;
  align-items: center; justify-content: center;
  font-size: 1.8rem; margin-bottom: 24px;
  margin-inline: auto;
  transition: var(--transition);
  border: 1px solid rgba(220, 38, 38, 0.1);
}
.card:hover .feature-icon {
  background: var(--clr-primary);
  color: var(--clr-white);
  transform: rotateY(180deg);
}

/* Placeholder Cards Styles */
.placeholder-img {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
}
.placeholder-img svg { z-index: 2; filter: drop-shadow(0 4px 6px rgba(0,0,0,0.2)); }
.placeholder-img::before {
  content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  background-image: radial-gradient(var(--clr-accent) 1px, transparent 1px);
  background-size: 24px 24px; opacity: 0.1; z-index: 1;
}

.placeholder-union { background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%); }
.placeholder-instrument { background: linear-gradient(135deg, #334155 0%, #1e293b 100%); }
.placeholder-filter { background: linear-gradient(135deg, #475569 0%, #334155 100%); }

/* Forms */
.form-group { margin-bottom: 24px; text-align: left; }
.form-label { display: block; margin-bottom: 8px; font-weight: 600; color: var(--clr-secondary); font-size: 0.9rem; }
.form-control {
  width: 100%; padding: 14px 16px;
  border: 1px solid #e2e8f0; border-radius: 8px;
  font-family: inherit; font-size: 1rem;
  background-color: #fff; transition: var(--transition);
}
.form-control:focus { outline: none; border-color: var(--clr-primary); box-shadow: 0 0 0 4px rgba(225, 29, 72, 0.1); }
textarea.form-control { resize: vertical; min-height: 140px; }

/* Page Header (Inner pages) */
.page-header {
  margin-top: 70px;
  background: var(--clr-secondary);
  color: var(--clr-white);
  padding: 80px 0;
  text-align: center;
}
.page-header h1 { font-size: clamp(2rem, 5vw, 3.5rem); margin: 0; color: var(--clr-white); }

/* Footer */
.site-footer {
  background: var(--clr-secondary);
  color: #94a3b8;
  padding: 80px 0 40px;
}
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 60px; margin-bottom: 60px; }
.footer-title { color: var(--clr-white); font-size: 1.1rem; margin-bottom: 24px; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; }
.footer-links li { margin-bottom: 12px; }
.footer-links a { color: #94a3b8; font-size: 0.95rem; }
.footer-links a:hover { color: var(--clr-primary); padding-left: 5px; }
.footer-bottom {
  text-align: center; border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 40px; font-size: 0.85rem;
}

/* Animations */
.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
  will-change: opacity, transform;
}
.fade-up.in-view { opacity: 1; transform: translateY(0); }

/* Stagger delay classes */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }

/* Scroll to Top Button */
#back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--clr-primary);
  color: var(--clr-white);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
}
#back-to-top.visible {
  opacity: 1;
  visibility: visible;
}
#back-to-top:hover {
  transform: translateY(-5px);
  background: var(--clr-primary-hover);
}

/* WhatsApp Button */
.whatsapp-float {
  position: fixed;
  bottom: 100px;
  right: 30px;
  width: 60px;
  height: 60px;
  background-color: #25d366;
  color: #fff;
  border-radius: 50px;
  text-align: center;
  font-size: 30px;
  box-shadow: 2px 2px 10px rgba(0,0,0,0.2);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}
.whatsapp-float:hover {
  background-color: #128c7e;
  transform: scale(1.1);
  box-shadow: 2px 2px 15px rgba(0,0,0,0.3);
  color: #fff !important;
}

@media (max-width: 768px) {
  .whatsapp-float {
    width: 50px;
    height: 50px;
    bottom: 90px;
    right: 20px;
  }
  #back-to-top {
    bottom: 20px;
    right: 20px;
  }
}