:root {
  --primary: #E60000; /* Industrial Red */
  --primary-hover: #B30000;
  --secondary: #1A1A1A; /* Dark almost black */
  --text-dark: #333333;
  --text-light: #F8F9FA;
  --bg-light: #FFFFFF;
  --bg-gray: #F4F6F8;
  --transition: all 0.3s ease;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
}

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

body {
  font-family: 'Inter', sans-serif;
  color: var(--text-dark);
  background-color: var(--bg-light);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

ul {
  list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  color: var(--secondary);
  line-height: 1.2;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; margin-bottom: 1.5rem; }
h3 { font-size: 1.75rem; margin-bottom: 1rem; }
p { margin-bottom: 1rem; }

/* Utility Classes */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.text-center { text-align: center; }
.mt-4 { margin-top: 2rem; }
.mb-4 { margin-bottom: 2rem; }
.py-5 { padding: 4rem 0; }
.bg-gray { background-color: var(--bg-gray); }
.bg-dark { background-color: var(--secondary); color: var(--text-light); }
.bg-dark h2, .bg-dark h3 { color: var(--text-light); }

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 4px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition);
}

.btn-primary {
  background-color: var(--primary);
  color: var(--secondary);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--primary);
  color: var(--primary);
}

.btn-outline:hover {
  background-color: var(--primary);
  color: var(--secondary);
  transform: translateY(-2px);
}

/* Header & Navbar */
header {
  background-color: var(--bg-light);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo img {
  height: 50px;
  object-fit: contain;
}

.nav-links {
  display: flex;
  gap: 30px;
  align-items: center;
}

.nav-links a {
  font-weight: 600;
  font-size: 1rem;
}

.nav-links a:hover {
  color: var(--primary);
}

.contact-btn-nav {
  background-color: var(--secondary);
  color: var(--primary) !important;
  padding: 8px 20px;
  border-radius: 4px;
  border: 2px solid var(--secondary);
}

.contact-btn-nav:hover {
  background-color: var(--primary);
  color: var(--secondary) !important;
  border-color: var(--primary);
}

.menu-toggle {
  display: none;
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  background: linear-gradient(rgba(26, 26, 26, 0.8), rgba(26, 26, 26, 0.8)), url('https://images.unsplash.com/photo-1581094288338-2314dddb7ece?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover;
  color: var(--text-light);
  padding: 120px 0;
  text-align: center;
}

.hero h1 {
  color: var(--primary);
  margin-bottom: 20px;
  animation: fadeInDown 1s ease;
}

.hero p {
  font-size: 1.25rem;
  max-width: 700px;
  margin: 0 auto 30px;
  animation: fadeInUp 1s ease;
}

.hero-btns {
  display: flex;
  gap: 20px;
  justify-content: center;
  animation: fadeInUp 1s ease 0.3s;
  animation-fill-mode: both;
}

/* Services Cards */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.service-card {
  background: var(--bg-light);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border-bottom: 4px solid var(--primary);
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.service-img {
  height: 600px;
  background-color: #ddd;
  background-size: cover;
  background-position: center;
}

.service-content {
  padding: 25px;
}

.service-content h3 {
  margin-bottom: 15px;
}

/* CTA Section */
.cta-section {
  background-color: var(--primary);
  color: var(--secondary);
  text-align: center;
  padding: 60px 0;
}

.cta-section h2 {
  color: var(--secondary);
}

/* Features List */
.features-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 15px;
}

.feature-icon {
  color: var(--primary);
  font-size: 1.5rem;
}

/* Contact Neon Button */
.contact-neon-btn {
  display: block;
  text-decoration: none;
  transition: var(--transition);
}

.contact-neon-btn:hover .contact-neon-box {
  box-shadow: 0 0 25px rgba(230, 0, 0, 0.5), 0 0 50px rgba(230, 0, 0, 0.2);
  border-color: var(--primary);
}

.contact-neon-btn:hover .contact-neon-icon {
  box-shadow: 0 0 20px rgba(230, 0, 0, 0.6);
  background: var(--primary);
  color: var(--secondary);
}

.contact-neon-box {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 18px 22px;
  border: 2px solid #cccccc;
  border-radius: 12px;
  background: transparent;
  transition: var(--transition);
  position: relative;
}

.contact-neon-icon {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--primary);
  background: rgba(230, 0, 0, 0.1);
  flex-shrink: 0;
  transition: var(--transition);
}

.contact-neon-box h4,
.contact-neon-box p {
  margin: 0;
}

/* Footer */
footer {
  background-color: var(--secondary);
  color: #aaa;
  padding: 60px 0 20px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h4 {
  color: var(--text-light);
  margin-bottom: 20px;
  font-size: 1.25rem;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a:hover {
  color: var(--primary);
}

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid #333;
  font-size: 0.9rem;
}

/* WhatsApp Float Button */
.whatsapp-float {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background-color: #25d366;
  color: #fff;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 35px;
  box-shadow: var(--shadow-lg);
  z-index: 100;
  transition: var(--transition);
}

.whatsapp-float:hover {
  transform: scale(1.1);
  color: #fff;
}

/* Page Headers */
.page-header {
  background-color: var(--secondary);
  padding: 80px 0;
  text-align: center;
  border-bottom: 5px solid var(--primary);
}

.page-header h1 {
  color: var(--primary);
  margin-bottom: 10px;
}

.page-header p {
  color: var(--text-light);
  font-size: 1.1rem;
}

/* Contact Form */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
}

.form-group {
  margin-bottom: 20px;
}

.form-control {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-family: inherit;
  font-size: 1rem;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
}

/* Animations */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: flex;
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background: var(--bg-light);
    flex-direction: column;
    padding: 20px 0;
    box-shadow: var(--shadow);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: max-height 0.5s ease, opacity 0.4s ease, visibility 0.4s ease, padding 0.5s ease;
  }
  
  .nav-links.active {
    display: flex;
    max-height: 500px;
    opacity: 1;
    visibility: visible;
    padding: 30px 0;
  }
  
  .menu-toggle {
    display: block;
  }
  
  .hero h1 { font-size: 2rem; }
  .hero p { font-size: 1rem; }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
}