/* ==========================================================================
   CSS Variables & Theme Setup (Black & Blue)
   ========================================================================== */
   @import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

   :root {
       /* Deep Black/Dark Mode Base */
       --bg-primary: #050505;
       --bg-secondary: #0a0e17;
       --bg-card: rgba(15, 20, 30, 0.6);
       
       /* Electric Blue Accents */
       --accent-primary: #00d2ff;
       --accent-secondary: #3a7bd5;
       --accent-glow: rgba(0, 210, 255, 0.4);
       
       /* Text Colors */
       --text-primary: #ffffff;
       --text-secondary: #a0aabf;
       --text-dark: #050505;
       
       /* Utility Properties */
       --border-color: rgba(255, 255, 255, 0.08);
       --border-radius-sm: 8px;
       --border-radius-md: 16px;
       --border-radius-lg: 24px;
       
       --transition-fast: 0.2s ease;
       --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
       
       /* Fluid Typography */
       --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
   }
   
   /* ==========================================================================
      Reset & Global
      ========================================================================== */
   * {
       margin: 0;
       padding: 0;
       box-sizing: border-box;
   }
   
   html {
       scroll-behavior: smooth;
       font-family: var(--font-sans);
       color: var(--text-primary);
       background-color: var(--bg-primary);
   }
   
   body {
       overflow-x: hidden;
       position: relative;
   }
   
   a {
       text-decoration: none;
       color: inherit;
   }
   
   ul {
       list-style: none;
   }
   
   img {
       max-width: 100%;
       height: auto;
       display: block;
   }
   
   .container {
       width: 100%;
       max-width: 1200px;
       margin: 0 auto;
       padding: 0 2rem;
   }
   
   /* ==========================================================================
      Background Light Ray Effects
      ========================================================================== */
   .background-rays {
       position: fixed;
       top: 0;
       left: 0;
       width: 100vw;
       height: 100vh;
       z-index: -1;
       overflow: hidden;
       background: var(--bg-primary);
   }
   
   .background-rays::before,
   .background-rays::after {
       content: '';
       position: absolute;
       width: 600px;
       height: 600px;
       border-radius: 50%;
       filter: blur(120px);
       opacity: 0.3;
       animation: float 20s infinite alternate linear;
   }
   
   .background-rays::before {
       top: -100px;
       right: -100px;
       background: var(--accent-primary);
   }
   
   .background-rays::after {
       bottom: -200px;
       left: -100px;
       background: var(--accent-secondary);
       animation-delay: -10s;
   }
   
   /* Dynamic Light Rays */
   @keyframes float {
       0% { transform: translate(0, 0) scale(1); }
       50% { transform: translate(-50px, 50px) scale(1.1); }
       100% { transform: translate(50px, -50px) scale(0.9); }
   }
   
   /* ==========================================================================
      Typography
      ========================================================================== */
   h1, h2, h3, h4 {
       font-weight: 700;
       line-height: 1.2;
       margin-bottom: 1rem;
   }
   
   h1 {
       font-size: clamp(2.5rem, 5vw, 4.5rem);
       letter-spacing: -0.02em;
       background: linear-gradient(to right, #ffffff, #a0aabf);
       -webkit-background-clip: text;
       background-clip: text;
       color: transparent;
   }
   
   h2 {
       font-size: clamp(2rem, 4vw, 3rem);
   }
   
   h3 {
       font-size: 1.5rem;
   }
   
   p {
       color: var(--text-secondary);
       line-height: 1.6;
       margin-bottom: 1.5rem;
       font-size: 1.125rem;
   }
   
   /* ==========================================================================
      Buttons
      ========================================================================== */
   .btn-primary, .btn-primary-sm {
       display: inline-flex;
       align-items: center;
       justify-content: center;
       background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
       color: var(--text-dark);
       font-weight: 600;
       border: none;
       border-radius: 100px;
       cursor: pointer;
       transition: var(--transition-normal);
       box-shadow: 0 4px 15px var(--accent-glow);
   }
   
   .btn-primary {
       padding: 1rem 2rem;
       font-size: 1.125rem;
   }
   
   .btn-primary-sm {
       padding: 0.6rem 1.5rem;
       font-size: 0.875rem;
   }
   
   .btn-primary:hover, .btn-primary-sm:hover {
       transform: translateY(-2px);
       box-shadow: 0 8px 25px var(--accent-glow);
       filter: brightness(1.1);
   }
   
   .btn-secondary {
       display: inline-flex;
       align-items: center;
       justify-content: center;
       background: rgba(255, 255, 255, 0.05);
       color: var(--text-primary);
       font-weight: 600;
       border: 1px solid var(--border-color);
       border-radius: 100px;
       padding: 1rem 2rem;
       font-size: 1.125rem;
       backdrop-filter: blur(10px);
       transition: var(--transition-normal);
   }
   
   .btn-secondary:hover {
       background: rgba(255, 255, 255, 0.1);
       border-color: rgba(255, 255, 255, 0.2);
       transform: translateY(-2px);
   }
   
   .w-full {
       width: 100%;
   }
   
   /* ==========================================================================
      Navigation
      ========================================================================== */
   .navbar {
       position: fixed;
       top: 0;
       width: 100%;
       padding: 1.5rem 5%;
       display: flex;
       justify-content: space-between;
       align-items: center;
       z-index: 100;
       transition: var(--transition-normal);
   }
   
   .navbar.scrolled {
       background: rgba(5, 5, 5, 0.8);
       backdrop-filter: blur(12px);
       -webkit-backdrop-filter: blur(12px);
       padding: 1rem 5%;
       border-bottom: 1px solid var(--border-color);
   }
   
   .logo {
       display: flex;
       align-items: center;
       gap: 0.5rem;
       font-size: 1.5rem;
       font-weight: 800;
       letter-spacing: 1px;
   }
   
   .logo i {
       color: var(--accent-primary);
       font-size: 2rem;
   }
   
   .nav-links {
       display: flex;
       align-items: center;
       gap: 2.5rem;
   }
   
   .nav-links a:not(.btn-primary-sm) {
       font-weight: 500;
       color: var(--text-secondary);
       transition: var(--transition-fast);
       position: relative;
   }
   
   .nav-links a:not(.btn-primary-sm):hover {
       color: var(--text-primary);
   }
   
   .nav-links a:not(.btn-primary-sm)::after {
       content: '';
       position: absolute;
       bottom: -4px;
       left: 0;
       width: 0%;
       height: 2px;
       background: var(--accent-primary);
       transition: var(--transition-fast);
   }
   
   .nav-links a:not(.btn-primary-sm):hover::after {
       width: 100%;
   }
   
   .mobile-menu-btn {
       display: none;
       font-size: 2rem;
       cursor: pointer;
   }
   
   /* ==========================================================================
      Hero Section
      ========================================================================== */
   .hero {
       min-height: 100vh;
       display: flex;
       align-items: center;
       padding-top: 5rem;
   }
   
   .hero-content {
       display: grid;
       grid-template-columns: 1fr 1fr;
       gap: 4rem;
       align-items: center;
   }
   
   .badge {
       display: inline-block;
       padding: 0.4rem 1rem;
       background: rgba(0, 210, 255, 0.1);
       border: 1px solid rgba(0, 210, 255, 0.2);
       color: var(--accent-primary);
       border-radius: 100px;
       font-size: 0.875rem;
       font-weight: 600;
       margin-bottom: 1.5rem;
   }
   
   .hero-actions {
       display: flex;
       gap: 1rem;
       margin-top: 2.5rem;
   }
   
   .hero-image-wrapper {
       position: relative;
   }
   
   /* Styling the main Hero Image Placeholder Box before real images are generated */
   .hero-img {
       width: 100%;
       height: 600px;
       object-fit: cover;
       border-radius: var(--border-radius-lg);
       border: 1px solid var(--border-color);
       box-shadow: 0 20px 50px rgba(0,0,0,0.5);
       background: var(--bg-secondary);
   }
   
   .floating-card {
       position: absolute;
       background: rgba(10, 14, 23, 0.7);
       backdrop-filter: blur(16px);
       -webkit-backdrop-filter: blur(16px);
       border: 1px solid var(--border-color);
       padding: 1rem 1.5rem;
       border-radius: var(--border-radius-md);
       display: flex;
       align-items: center;
       gap: 1rem;
       box-shadow: 0 10px 30px rgba(0,0,0,0.3);
       animation: bob 4s infinite ease-in-out alternate;
   }
   
   .floating-card i {
       font-size: 2.5rem;
       color: var(--accent-primary);
   }
   
   .floating-card strong {
       display: block;
       font-size: 1.1rem;
   }
   
   .floating-card span {
       font-size: 0.875rem;
       color: var(--text-secondary);
   }
   
   .water-card {
       top: 10%;
       left: -10%;
       animation-delay: 0s;
   }
   
   .energy-card {
       bottom: 10%;
       right: -10%;
       animation-delay: 1s;
   }
   
   @keyframes bob {
       0% { transform: translateY(0); }
       100% { transform: translateY(-15px); }
   }
   
   /* ==========================================================================
      Services Section
      ========================================================================== */
   .services {
       padding: 8rem 0;
   }
   
   .section-header {
       text-align: center;
       max-width: 600px;
       margin: 0 auto 4rem;
   }
   
   .services-grid {
       display: grid;
       grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
       gap: 2rem;
   }
   
   .service-card {
       background: var(--bg-card);
       border: 1px solid var(--border-color);
       border-radius: var(--border-radius-md);
       overflow: hidden;
       transition: var(--transition-normal);
       position: relative;
   }
   
   .service-card:hover {
       transform: translateY(-10px);
       border-color: rgba(0, 210, 255, 0.3);
       box-shadow: 0 10px 40px rgba(0, 210, 255, 0.1);
   }
   
   .service-img-wrapper {
       position: relative;
       height: 200px;
       overflow: hidden;
   }
   
   /* Image placeholder styles */
   .service-img-wrapper img {
       width: 100%;
       height: 100%;
       object-fit: cover;
       transition: transform 0.5s ease;
       background: #111;
   }
   
   .service-card:hover .service-img-wrapper img {
       transform: scale(1.05);
   }
   
   .service-icon {
       position: absolute;
       bottom: -20px;
       right: 20px;
       width: 60px;
       height: 60px;
       background: var(--bg-primary);
       border-radius: 50%;
       display: flex;
       align-items: center;
       justify-content: center;
       font-size: 1.8rem;
       color: var(--accent-primary);
       border: 1px solid var(--border-color);
   }
   
   .service-content {
       padding: 2rem;
   }
   
   .service-content p {
       margin-bottom: 0;
       font-size: 1rem;
   }
   
   /* ==========================================================================
      Contact Section
      ========================================================================== */
   .contact {
       padding: 8rem 0;
       position: relative;
   }
   
   /* Subtle gradient separator */
   .contact::before {
       content: '';
       position: absolute;
       top: 0;
       left: 5%;
       width: 90%;
       height: 1px;
       background: linear-gradient(90deg, transparent, rgba(0, 210, 255, 0.3), transparent);
   }
   
   .contact-container {
       display: grid;
       grid-template-columns: 1fr 1fr;
       gap: 4rem;
   }
   
   .info-items {
       margin-top: 3rem;
       display: flex;
       flex-direction: column;
       gap: 2rem;
   }
   
   .info-item {
       display: flex;
       align-items: center;
       gap: 1.5rem;
   }
   
   .icon-box {
       width: 50px;
       height: 50px;
       background: rgba(0, 210, 255, 0.1);
       border-radius: var(--border-radius-sm);
       display: flex;
       align-items: center;
       justify-content: center;
       font-size: 1.5rem;
       color: var(--accent-primary);
   }
   
   .info-item strong {
       display: block;
       font-size: 1.1rem;
   }
   
   .contact-form-wrapper {
       background: var(--bg-card);
       border: 1px solid var(--border-color);
       padding: 3rem;
       border-radius: var(--border-radius-lg);
       backdrop-filter: blur(10px);
   }
   
   .contact-form-wrapper h3 {
       margin-bottom: 2rem;
   }
   
   .form-group {
       margin-bottom: 1.5rem;
   }
   
   .form-group label {
       display: block;
       margin-bottom: 0.5rem;
       font-weight: 500;
       color: var(--text-secondary);
   }
   
   .form-group input,
   .form-group select,
   .form-group textarea {
       width: 100%;
       padding: 1rem;
       background: rgba(0,0,0,0.3);
       border: 1px solid rgba(255,255,255,0.1);
       border-radius: var(--border-radius-sm);
       color: var(--text-primary);
       font-family: var(--font-sans);
       font-size: 1rem;
       transition: var(--transition-fast);
   }
   
   .form-group input:focus,
   .form-group select:focus,
   .form-group textarea:focus {
       outline: none;
       border-color: var(--accent-primary);
       box-shadow: 0 0 0 3px rgba(0, 210, 255, 0.1);
   }
   
   .form-group option {
       background: var(--bg-secondary);
       color: var(--text-primary);
   }
   
   .form-note {
       margin-top: 1rem;
       font-size: 0.875rem;
       text-align: center;
       text-transform: italic;
   }
   
   /* ==========================================================================
      Footer
      ========================================================================== */
   footer {
       background: #000;
       border-top: 1px solid var(--border-color);
       padding: 4rem 0 2rem;
   }
   
   .footer-content {
       display: flex;
       justify-content: space-between;
       align-items: flex-start;
       margin-bottom: 3rem;
   }
   
   .footer-brand {
       max-width: 300px;
   }
   
   .footer-brand .logo {
       margin-bottom: 1rem;
   }
   
   .footer-links {
       display: flex;
       gap: 2rem;
   }
   
   .footer-links a {
       color: var(--text-secondary);
       transition: var(--transition-fast);
   }
   
   .footer-links a:hover {
       color: var(--text-primary);
   }
   
   .footer-bottom {
       text-align: center;
       padding-top: 2rem;
       border-top: 1px solid var(--border-color);
       color: var(--text-secondary);
   }
   
   /* ==========================================================================
      Responsive Design
      ========================================================================== */
   @media (max-width: 992px) {
       .hero-content {
           grid-template-columns: 1fr;
           text-align: center;
       }
   
       .hero-actions {
           justify-content: center;
       }
   
       .floating-card {
           display: none; /* Hide floating elements on smaller screens for cleaner look */
       }
   
       .contact-container {
           grid-template-columns: 1fr;
       }
   }
   
   @media (max-width: 768px) {
       .nav-links {
           display: none; /* Mobile menu hidden by default */
           position: absolute;
           top: 100%;
           left: 0;
           width: 100%;
           background: rgba(5, 5, 5, 0.95);
           backdrop-filter: blur(10px);
           flex-direction: column;
           padding: 2rem;
           border-bottom: 1px solid var(--border-color);
       }
   
       .nav-links.active {
           display: flex;
       }
   
       .mobile-menu-btn {
           display: block;
       }
   
       .footer-content {
           flex-direction: column;
           gap: 2rem;
       }
   }