:root {
  /* Color Palette - Modern Industrial & Metallic */
  --bg-dark: #0a0b10;
  --bg-darker: #050508;
  --text-light: #f0f2f5;
  --text-muted: #9ba3af;
  
  --accent-primary: #F1C40F; /* Industrial Yellow / Gold */
  --accent-secondary: #F39C12; /* Darker Gold highlight */
  
  --metallic-silver: #c0c5ce;
  --metallic-dark: #1f232b;
  
  --glass-bg: rgba(31, 35, 43, 0.6);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-glow: rgba(241, 196, 15, 0.15);

  --transition-smooth: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

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

html {
  scroll-behavior: smooth;
}

/* Typography */
h1, h2, h3, h4 {
  font-weight: 600;
  line-height: 1.2;
}

.highlight {
  background: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-center { text-align: center; }
.section-padding { padding: 100px 0; }
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition-smooth);
  cursor: pointer;
  border: none;
  font-size: 1rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary));
  color: #000; /* Black text on yellow button */
  box-shadow: 0 4px 15px rgba(241, 196, 15, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(241, 196, 15, 0.5);
}

.btn-secondary {
  background: transparent;
  color: var(--text-light);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: var(--glass-bg);
  border-color: var(--metallic-silver);
}

/* Glassmorphism Utility */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(10, 11, 16, 0.8);
  backdrop-filter: blur(15px);
  border-bottom: 1px solid var(--glass-border);
  transition: var(--transition-smooth);
}

.navbar.scrolled {
  padding: 10px 0;
  background: rgba(10, 11, 16, 0.95);
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  text-decoration: none;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 1px;
}

.brand-aether { color: var(--text-light); }
.brand-aluminium { color: var(--accent-primary); }

.nav-links {
  display: flex;
  list-style: none;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  color: var(--text-light);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

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

.cta-button {
  background: var(--glass-bg);
  padding: 10px 20px;
  border-radius: 6px;
  border: 1px solid var(--accent-primary);
  color: var(--accent-primary) !important;
}
.cta-button:hover {
  background: var(--accent-primary);
  color: white !important;
}

.mobile-menu-toggle { display: none; }

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 80px;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background: linear-gradient(rgba(10, 11, 16, 0.75), rgba(10, 11, 16, 0.95)), url('/images/about_us.png') center/cover no-repeat;
  z-index: -2;
}

.hero-background::after {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 60vw; height: 60vw;
  background: radial-gradient(circle, var(--glass-glow) 0%, transparent 70%);
  z-index: -1;
}

.hero-content {
  text-align: center;
  max-width: 800px;
  padding: 0 24px;
}

.subtitle {
  color: var(--accent-secondary);
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.title {
  font-size: clamp(3rem, 5vw, 5.5rem);
  margin-bottom: 24px;
}

.hero-content .description {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
}

/* About Section */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about h2 {
  font-size: 2.5rem;
  margin-bottom: 24px;
}

.about p {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 32px;
}

.features-list {
  list-style: none;
}

.features-list li {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
  font-size: 1.1rem;
  font-weight: 500;
}

.features-list svg {
  color: var(--accent-secondary);
}

.image-mockup {
  height: 500px;
  background: url('/images/about_us.png') center/cover no-repeat;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
}

/* Creating a cool geometric pattern for the mockup to look like panels */
.image-mockup::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: 
    linear-gradient(30deg, transparent 40%, rgba(255,255,255,0.05) 45%, transparent 50%),
    linear-gradient(-30deg, transparent 40%, rgba(255,255,255,0.05) 45%, transparent 50%);
  background-size: 100px 100px;
}

.mockup-overlay {
  width: 100%;
  padding: 24px;
  background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
  z-index: 1;
}

/* Products Section */
.section-header {
  margin-bottom: 64px;
}

.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
}

.product-card {
  overflow: hidden;
  transition: var(--transition-smooth);
}

.product-card:hover {
  transform: translateY(-10px);
  border-color: var(--accent-primary);
  box-shadow: 0 15px 40px rgba(241, 196, 15, 0.2);
}

.product-image {
  height: 240px;
  background-color: var(--metallic-dark);
  position: relative;
}

.mock-img-1 { background: url('/images/acp_panel.png') center/cover no-repeat; }
.mock-img-2 { background: url('/images/solid_cladding.png') center/cover no-repeat; }
.mock-img-3 { background: url('/images/honeycomb.png') center/cover no-repeat; }

.product-info {
  padding: 24px;
}

.product-info h3 {
  font-size: 1.4rem;
  margin-bottom: 12px;
}

.product-info p {
  color: var(--text-muted);
  margin-bottom: 20px;
  font-size: 0.95rem;
}

.read-more {
  color: var(--accent-secondary);
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  transition: var(--transition-smooth);
}

.read-more:hover {
  color: var(--accent-primary);
  transform: translateX(5px);
}

/* Contact Section */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding: 48px;
  gap: 48px;
}

.contact-info h2 {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.contact-info p {
  color: var(--text-muted);
  margin-bottom: 32px;
}

.info-items p {
  margin-bottom: 16px;
  font-size: 1.1rem;
  color: var(--text-light);
}

.modern-form .form-group {
  margin-bottom: 24px;
}

.modern-form label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--text-muted);
}

.modern-form input,
.modern-form textarea {
  width: 100%;
  padding: 14px 16px;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  color: var(--text-light);
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition-smooth);
}

.modern-form input:focus,
.modern-form textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  background: rgba(0, 112, 243, 0.05);
}

.full-width { width: 100%; }

/* Footer */
footer {
  padding: 32px 0;
  border-top: 1px solid var(--glass-border);
  background: var(--bg-darker);
  color: var(--text-muted);
}

/* Animations & Utilities */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.slide-in-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.slide-in-right {
  opacity: 0;
  transform: translateX(50px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.visible {
  opacity: 1;
  transform: translate(0);
}

/* Responsive */
@media (max-width: 900px) {
  .about-grid, .contact-wrapper {
    grid-template-columns: 1fr;
  }
  
  .title { font-size: 3rem; }
  
  .nav-links {
    display: none; /* Add mobile menu later if needed */
  }
  .mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
  }
  .mobile-menu-toggle span {
    width: 30px; height: 2px;
    background: var(--text-light);
    transition: 0.3s;
  }
  .contact-wrapper { padding: 24px; }
}