/* --- CSS Variables & Reset --- */
 :root {
     --primary-color: #0f766e;
     /* Teal */
     --secondary-color: #065f46;
     /* Dark Emerald */
     --accent-color: #facc15;
     /* Bright Yellow Gold */
     --accent-hover: #eab308;
     --text-dark: #064e3b;
     --text-light: #4d7c6e;
     --white: #ffffff;
     --light-bg: #f0fdf4;
     --border-color: #d1fae5;
     --success-color: #16a34a;
     --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
     --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
     --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
     --radius: 8px;
     --transition: all 0.3s ease;
 }

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

 html {
     scroll-behavior: smooth;
 }

 body {
     font-family: 'Inter', sans-serif;
     color: var(--text-dark);
     line-height: 1.6;
     background-color: var(--white);
 }

 a {
     text-decoration: none;
     color: inherit;
 }

 ul {
     list-style: none;
 }

 img {
     max-width: 100%;
     height: auto;
     display: block;
 }

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

 .btn {
     display: inline-block;
     padding: 12px 28px;
     border-radius: var(--radius);
     font-weight: 600;
     cursor: pointer;
     transition: var(--transition);
     border: none;
     text-align: center;
 }

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

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

 .btn-secondary {
     background-color: transparent;
     border: 2px solid var(--white);
     color: var(--white);
 }

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

 .btn-outline-dark {
     border: 2px solid var(--primary-color);
     color: var(--primary-color);
     background: transparent;
 }

 .btn-outline-dark:hover {
     background: var(--primary-color);
     color: var(--white);
 }

 .section-title {
     text-align: center;
     margin-bottom: 3rem;
 }

 .section-title h2 {
     font-size: 2.5rem;
     color: var(--primary-color);
     margin-bottom: 1rem;
 }

 .section-title p {
     color: var(--text-light);
     max-width: 600px;
     margin: 0 auto;
 }

 section {
     padding: 5rem 0;
 }

 /* --- Header & Nav --- */
 header {
     background-color: var(--white);
     box-shadow: var(--shadow-sm);
     position: sticky;
     top: 0;
     z-index: 1000;
     padding: 1rem 0;
 }

 nav {
     display: flex;
     justify-content: space-between;
     align-items: center;
 }

 .logo {
     font-size: 1.5rem;
     font-weight: 700;
     color: var(--primary-color);
     display: flex;
     align-items: center;
     gap: 0.5rem;
 }

 .nav-links {
     display: flex;
     gap: 1.5rem;
     align-items: center;
 }

 .nav-links a {
     font-weight: 500;
     color: var(--text-dark);
     transition: var(--transition);
 }

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

 .cta-header {
     display: none;
 }

 .mobile-toggle {
     display: none;
     font-size: 1.5rem;
     cursor: pointer;
     background: none;
     border: none;
 }

 /* --- Hero Section --- */
 #hero {
     background: linear-gradient(rgba(0, 0, 0, 0.9), rgba(0, 0, 0, 0.8)), url('../img/hero.jpg');
     background-size: cover;
     background-position: center;
     color: var(--white);
     padding: 8rem 0;
 }

 .hero-content {
     display: grid;
     grid-template-columns: 1fr 1fr;
     gap: 3rem;
     align-items: center;
 }

 .hero-text h1 {
     font-size: 3rem;
     line-height: 1.2;
     margin-bottom: 1.5rem;
 }

 .hero-text p {
     font-size: 1.2rem;
     margin-bottom: 2rem;
     color: #cbd5e1;
 }

 .hero-buttons {
     display: flex;
     gap: 1rem;
 }

 .hero-image img {
     border-radius: var(--radius);
     box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3);
     border: 4px solid rgba(255, 255, 255, 0.1);
 }

 /* --- About Preview --- */
 #about {
     background-color: var(--white);
 }

 .about-wrapper {
     display: flex;
     flex-direction: column;
     align-items: center;
     text-align: center;
     max-width: 800px;
     margin: 0 auto;
 }

 .about-wrapper h2 {
     font-size: 2rem;
     margin-bottom: 1.5rem;
     color: var(--primary-color);
 }

 .about-wrapper p {
     font-size: 1.1rem;
     color: var(--text-light);
     margin-bottom: 2rem;
 }

 /* --- Why Choose Us --- */
 #why-us {
     background-color: var(--light-bg);
 }

 .features-grid {
     display: grid;
     grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
     gap: 2rem;
 }

 .feature-card {
     background: var(--white);
     padding: 2rem;
     border-radius: var(--radius);
     box-shadow: var(--shadow-sm);
     transition: var(--transition);
     text-align: center;
 }

 .feature-card:hover {
     transform: translateY(-5px);
     box-shadow: var(--shadow-md);
 }

 .feature-icon {
     width: 60px;
     height: 60px;
     background-color: rgba(0, 0, 0, 0.1);
     color: var(--primary-color);
     border-radius: 50%;
     display: flex;
     align-items: center;
     justify-content: center;
     margin: 0 auto 1.5rem;
 }

 .feature-icon svg {
     width: 30px;
     height: 30px;
 }

 .feature-card h3 {
     margin-bottom: 1rem;
     color: var(--primary-color);
 }

 .feature-card p {
     color: var(--text-light);
     font-size: 0.95rem;
 }

 /* --- Services --- */
 #services {
     background-color: var(--white);
 }

 .services-container {
     display: grid;
     grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
     gap: 2rem;
 }

 .service-category {
     background-color: var(--white);
     border: 1px solid var(--border-color);
     border-radius: var(--radius);
     padding: 2rem;
     transition: var(--transition);
 }

 .service-category:hover {
     border-color: var(--secondary-color);
     box-shadow: var(--shadow-lg);
 }

 .service-category h3 {
     color: var(--secondary-color);
     font-size: 1.25rem;
     margin-bottom: 1.5rem;
     padding-bottom: 0.5rem;
     border-bottom: 2px solid var(--light-bg);
 }

 .service-list li {
     position: relative;
     padding-left: 1.5rem;
     margin-bottom: 0.75rem;
     color: var(--text-dark);
     font-size: 0.95rem;
 }

 .service-list li::before {
     content: "•";
     color: var(--accent-color);
     font-weight: bold;
     position: absolute;
     left: 0;
     top: 0;
 }

 .services-cta {
     text-align: center;
     margin-top: 3rem;
 }

 /* --- Testimonials --- */
 #testimonials {
     background-color: var(--light-bg);
 }

 .testimonials-grid {
     display: grid;
     grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
     gap: 2rem;
 }

 .testimonial-card {
     background: var(--white);
     padding: 2.5rem;
     border-radius: var(--radius);
     box-shadow: var(--shadow-sm);
     position: relative;
 }

 .quote-icon {
     font-size: 3rem;
     color: rgba(0, 0, 0, 0.1);
     position: absolute;
     top: 1rem;
     right: 1.5rem;
 }

 .testimonial-text {
     font-style: italic;
     color: var(--text-dark);
     margin-bottom: 1.5rem;
 }

 .testimonial-author {
     font-weight: 700;
     color: var(--primary-color);
 }

 /* --- FAQ --- */
 #faq {
     background-color: var(--white);
 }

 .faq-wrapper {
     max-width: 800px;
     margin: 0 auto;
 }

 .faq-item {
     border-bottom: 1px solid var(--border-color);
 }

 .faq-question {
     width: 100%;
     text-align: left;
     background: none;
     border: none;
     padding: 1.5rem 0;
     font-size: 1.1rem;
     font-weight: 600;
     color: var(--primary-color);
     cursor: pointer;
     display: flex;
     justify-content: space-between;
     align-items: center;
 }

 .faq-question:hover {
     color: var(--secondary-color);
 }

 .faq-answer {
     max-height: 0;
     overflow: hidden;
     transition: max-height 0.3s ease-out;
     color: var(--text-light);
 }

 .faq-answer p {
     padding-bottom: 1.5rem;
 }

 .faq-toggle-icon {
     transition: transform 0.3s;
 }

 .faq-item.active .faq-toggle-icon {
     transform: rotate(180deg);
 }

 .faq-item.active .faq-answer {
     max-height: 200px;
     /* Adjust as needed */
 }

 /* --- Contact & Newsletter --- */
 #contact {
     background-color: var(--primary-color);
     color: var(--white);
 }

 #contact .section-title h2 {
     color: var(--white);
 }

 #contact .section-title p {
     color: rgba(255, 255, 255, 0.7);
 }

 .contact-layout {
     display: grid;
     grid-template-columns: 1fr 1fr;
     gap: 4rem;
 }

 .form-group {
     margin-bottom: 1.5rem;
 }

 .form-group label {
     display: block;
     margin-bottom: 0.5rem;
     font-size: 0.9rem;
     font-weight: 500;
 }

 .form-control {
     width: 100%;
     padding: 12px;
     border: 1px solid rgba(255, 255, 255, 0.2);
     border-radius: var(--radius);
     background: rgba(255, 255, 255, 0.05);
     color: var(--white);
     font-family: inherit;
 }

 .form-control:focus {
     outline: none;
     border-color: var(--accent-color);
     background: rgba(255, 255, 255, 0.1);
 }

 /* Newsletter Section Specifics */
 #newsletter {
     background-color: var(--white);
     border-top: 1px solid var(--border-color);
 }

 .newsletter-form {
     max-width: 600px;
     margin: 0 auto;
     background: var(--light-bg);
     padding: 2rem;
     border-radius: var(--radius);
 }

 .checkbox-group {
     display: flex;
     align-items: center;
     gap: 0.5rem;
     margin-bottom: 1.5rem;
 }

 .checkbox-group input {
     width: 18px;
     height: 18px;
 }

 .checkbox-group label {
     font-size: 0.9rem;
     color: var(--text-dark);
 }

 /* --- Footer --- */
 footer {
     background-color: #020617;
     /* Very dark navy */
     color: #94a3b8;
     padding: 4rem 0 2rem;
     font-size: 0.9rem;
 }

 .footer-grid {
     display: grid;
     grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
     gap: 2rem;
     margin-bottom: 3rem;
 }

 .footer-col h4 {
     color: var(--white);
     margin-bottom: 1.5rem;
     font-size: 1.1rem;
 }

 .footer-links li {
     margin-bottom: 0.75rem;
 }

 .footer-links a:hover {
     color: var(--accent-color);
     text-decoration: underline;
 }

 .footer-bottom {
     border-top: 1px solid rgba(255, 255, 255, 0.1);
     padding-top: 2rem;
     display: flex;
     flex-direction: column;
     align-items: center;
     text-align: center;
     gap: 1rem;
 }

 .social-icons {
     display: flex;
     gap: 1rem;
 }

 .social-icons a {
     color: var(--white);
     font-size: 1.2rem;
     transition: var(--transition);
 }

 .social-icons a:hover {
     color: var(--accent-color);
 }

 /* --- Modals --- */
 .modal {
     display: none;
     position: fixed;
     z-index: 2000;
     left: 0;
     top: 0;
     width: 100%;
     height: 100%;
     background-color: rgba(0, 0, 0, 0.6);
     backdrop-filter: blur(5px);
     align-items: center;
     justify-content: center;
     opacity: 0;
     transition: opacity 0.3s;
 }

 .modal.show {
     display: flex;
     opacity: 1;
 }

 .modal-content {
     background-color: var(--white);
     padding: 2rem;
     border-radius: var(--radius);
     max-width: 600px;
     width: 90%;
     max-height: 80vh;
     overflow-y: auto;
     position: relative;
 }

 .close-modal {
     position: absolute;
     top: 1rem;
     right: 1.5rem;
     font-size: 2rem;
     cursor: pointer;
     color: var(--text-light);
     background: none;
     border: none;
 }

 .close-modal:hover {
     color: var(--primary-color);
 }

 /* Success Message Styling */
 .success-message {
     display: none;
     padding: 1rem;
     background-color: #dcfce7;
     color: #166534;
     border-radius: var(--radius);
     margin-top: 1rem;
     text-align: center;
     border: 1px solid #bbf7d0;
 }

 /* --- Responsive Design --- */
 @media (min-width: 769px) {
     .cta-header {
         display: inline-block;
     }
 }

 @media (max-width: 768px) {
     .mobile-toggle {
         display: block;
     }

     .nav-links {
         position: fixed;
         top: 70px;
         left: -100%;
         width: 100%;
         background-color: var(--white);
         flex-direction: column;
         padding: 2rem;
         box-shadow: var(--shadow-md);
         transition: 0.3s ease-in-out;
     }

     .nav-links.active {
         left: 0;
     }

     .hero-content {
         grid-template-columns: 1fr;
         text-align: center;
     }

     .hero-buttons {
         justify-content: center;
     }

     .contact-layout {
         grid-template-columns: 1fr;
     }

     .section-title h2 {
         font-size: 2rem;
     }
 }