:root {
        --primary-blue: #1a4b8c;
        --secondary-blue: #2d6ec4;
        --light-blue: #e8f1ff;
        --dark-grey: #333;
        --medium-grey: #666;
        --light-grey: #f5f7fa;
        --white: #ffffff;
        --shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        --civil-blue: #0d2d5e;
        --steel-grey: #5c7a9d;
        --gold: #d4af37;
      }

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

      body {
        font-family: "Open Sans", sans-serif;
        color: var(--dark-grey);
        line-height: 1.6;
        background-color: var(--white);
        padding-top: 70px;
        overflow-x: hidden;
      }

      h1,
      h2,
      h3,
      h4 {
        font-family: "Montserrat", sans-serif;
        font-weight: 700;
        margin-bottom: 1rem;
        color: var(--primary-blue);
      }

      .container {
        width: 90%;
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 15px;
      }

      /* Header & Navigation */
      header {
        background-color: black;
        box-shadow: var(--shadow);
        position: fixed;
        width: 100%;
        top: 0;
        z-index: 1000;
      }

      .header-container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 1rem 0;
      }

      .logo {
        display: flex;
        align-items: center;
      }

      .logo h1 {
        font-size: 1.8rem;
        margin: 0;
        color: gold;
      }

      .logo span {
        color: blue;
      }

      nav ul {
        display: flex;
        list-style: none;
      }

      nav ul li {
        margin-left: 1.5rem;
      }

      nav ul li a {
        text-decoration: none;
        color: white;
        font-weight: 600;
        font-size: 1rem;
        transition: color 0.3s;
      }

      nav ul li a:hover {
        color: var(--secondary-blue);
      }

      .mobile-menu-btn {
        display: none;
        background: none;
        border: none;
        font-size: 1.5rem;
        cursor: pointer;
        color: var(--primary-blue);
      }

      /* Services Hero Section */
      .services-hero {
        background: linear-gradient(
            rgba(13, 45, 94, 0.705),
            rgba(13, 45, 94, 0.568)
          ),
          url("https://plus.unsplash.com/premium_photo-1671808062726-2a7ffcd6109e?w=500&auto=format&fit=crop&q=60&ixlib=rb-4.1.0&ixid=M3wxMjA3fDB8MHxzZWFyY2h8MTd8fGNvbnN0cnVjdGlvbnxlbnwwfHwwfHx8MA%3D%3D")
            no-repeat center center/cover;
        padding: 12rem 0 6rem;
        text-align: center;
        color: var(--white);
        position: relative;
        overflow: hidden;
        height: 70vh;
      }

      .services-hero::before {
        content: "";
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 0px;
        background: linear-gradient(
          135deg,
          transparent 0%,
          transparent 50%,
          var(--white) 50%,
          var(--white) 100%
        );
        background-size: 20px 20px;
      }

      .services-hero h2 {
        font-size: 3.5rem;
        margin-bottom: 1.5rem;
        color: gold;
        animation: fadeInDown 1s ease-out;
      }

      .services-hero p {
        font-size: 1.3rem;
        max-width: 800px;
        margin: 0 auto 2rem;
        animation: fadeInUp 1s ease-out 0.3s both;
      }

      /* Services Section */
      .services {
        padding: 6rem 0;
        background-color: black;
        position: relative;
      }

      

      .section-title {
        text-align: center;
        margin-bottom: 4rem;
      }

      .section-title h2 {
        font-size: 2.8rem;
        position: relative;
        display: inline-block;
        padding-bottom: 0.5rem;
        animation: fadeIn 1s ease-out;
      }

      .section-title h2::after {
        content: "";
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 80px;
        height: 4px;
        background-color: gold;
      }

      .section-title p {
        font-size: 1.2rem;
        color: rgba(255, 255, 255, 0.733);
        max-width: 700px;
        margin: 1rem auto 0;
      }

      .services-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
        gap: 2.5rem;
      }

      .service-card {
        background-color: var(--white);
        border-radius: 12px;
        overflow: hidden;
        box-shadow: var(--shadow);
        transition: all 0.4s ease;
        opacity: 0;
        transform: translateY(30px);
      }

      .service-card.animate {
        opacity: 1;
        transform: translateY(0);
      }

      .service-card:hover {
        transform: translateY(-15px);
        box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
      }

      .service-image {
        height: 220px;
        overflow: hidden;
        position: relative;
      }

      .service-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.7s ease;
      }

      .service-card:hover .service-image img {
        transform: scale(1.1);
      }

      .service-content {
        padding: 2rem;
      }

      .service-icon {
        width: 70px;
        height: 70px;
        background: linear-gradient(
          135deg,
          var(--primary-blue),
          var(--secondary-blue)
        );
        border-radius: 50%;
        display: flex;
        justify-content: center;
        align-items: center;
        margin: -50px auto 1.5rem;
        position: relative;
        z-index: 1;
        box-shadow: 0 5px 15px rgba(45, 110, 196, 0.3);
        color: var(--white);
        font-size: 1.8rem;
      }

      .service-content h3 {
        font-size: 1.6rem;
        margin-bottom: 1rem;
        text-align: center;
        color: var(--civil-blue);
      }

      .service-content p {
        color: var(--medium-grey);
        margin-bottom: 1.5rem;
        text-align: center;
      }

      .service-features {
        margin: 1.5rem 0;
      }

      .service-feature {
        display: flex;
        align-items: center;
        margin-bottom: 0.8rem;
      }

      .feature-icon {
        width: 25px;
        height: 25px;
        background-color: var(--light-blue);
        border-radius: 50%;
        display: flex;
        justify-content: center;
        align-items: center;
        margin-right: 0.8rem;
        color: var(--secondary-blue);
        font-size: 0.8rem;
      }

      .service-cta {
        text-align: center;
        margin-top: 2rem;
      }

      .btn {
        display: inline-block;
        background: linear-gradient(
          to right,
          var(--primary-blue),
          var(--secondary-blue)
        );
        color: var(--white);
        padding: 0.8rem 1.8rem;
        border-radius: 50px;
        text-decoration: none;
        font-weight: 600;
        transition: all 0.3s;
        border: none;
        cursor: pointer;
        box-shadow: 0 4px 15px rgba(45, 110, 196, 0.3);
      }

      .btn:hover {
        transform: translateY(-3px);
        box-shadow: 0 8px 20px rgba(45, 110, 196, 0.4);
      }

      /* Civil Engineering Focus Section */
      .civil-focus {
        padding: 6rem 0;
        background: linear-gradient(
            rgba(255, 255, 255, 0.9),
            rgba(255, 255, 255, 0.9)
          ),
          url("https://images.unsplash.com/photo-1581092918056-0c4c3acd3789?ixlib=rb-4.0.3&auto=format&fit=crop&w=1500&q=80")
            no-repeat center center/cover;
        position: relative;
      }

      .civil-container {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 4rem;
        align-items: center;
      }

      .civil-content h2 {
        font-size: 2.5rem;
        margin-bottom: 1.5rem;
        color: var(--civil-blue);
      }

      .civil-content p {
        margin-bottom: 1.5rem;
        color: var(--medium-grey);
        font-size: 1.1rem;
      }

      .civil-features {
        margin: 2rem 0;
      }

      .civil-feature {
        display: flex;
        align-items: center;
        margin-bottom: 1.2rem;
      }

      .civil-icon {
        width: 50px;
        height: 50px;
        background-color: var(--light-blue);
        border-radius: 10px;
        display: flex;
        justify-content: center;
        align-items: center;
        margin-right: 1.2rem;
        color: var(--secondary-blue);
        font-size: 1.3rem;
      }

      .civil-image {
        border-radius: 12px;
        overflow: hidden;
        box-shadow: var(--shadow);
        position: relative;
      }

      .civil-image img {
        width: 100%;
        height: auto;
        display: block;
        transition: transform 0.5s ease;
      }

      .civil-image:hover img {
        transform: scale(1.05);
      }

      /* CTA Section */
      .cta {
        padding: 6rem 0;
        text-align: center;
        background: linear-gradient(
            rgba(13, 45, 94, 0.562),
            rgba(13, 45, 94, 0.61)
          ),
          url("https://images.unsplash.com/photo-1579847188804-ecba0e2ea330?w=700&auto=format&fit=crop&q=60&ixlib=rb-4.1.0&ixid=M3wxMjA3fDB8MHxzZWFyY2h8MTh8fGNvbnN0cnVjdGlvbnxlbnwwfHwwfHx8MA%3D%3D")
            no-repeat center center/cover;
        color: var(--white);
      }

      .cta h2 {
        font-size: 2.8rem;
        margin-bottom: 1.5rem;
        color: gold;
      }

      .cta p {
        max-width: 700px;
        margin: 0 auto 2.5rem;
        font-size: 1.2rem;
        color: var(--light-blue);
      }

      /* Footer */
      footer {
        background-color: black;
        color: var(--white);
        padding: 4rem 0 1.5rem;
      }

      .footer-container {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 2.5rem;
      }

      .footer-col h3 {
        color: var(--white);
        margin-bottom: 1.5rem;
        font-size: 1.3rem;
      }

      .footer-col p {
        margin-bottom: 1rem;
      }

      .footer-col ul {
        list-style: none;
      }

      .footer-col ul li {
        margin-bottom: 0.8rem;
      }

      .footer-col ul li a {
        color: #ccc;
        text-decoration: none;
        transition: color 0.3s;
      }

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

      .copyright {
        text-align: center;
        margin-top: 4rem;
        padding-top: 1.5rem;
        border-top: 1px solid #555;
        color: #ccc;
      }

      /* WhatsApp Float */
      .whatsapp-float {
        position: fixed;
        bottom: 2rem;
        right: 2rem;
        width: 60px;
        height: 60px;
        background-color: #25d366;
        color: var(--white);
        border-radius: 50%;
        display: flex;
        justify-content: center;
        align-items: center;
        font-size: 1.8rem;
        box-shadow: var(--shadow);
        z-index: 100;
        text-decoration: none;
        transition: all 0.3s;
        animation: pulse 2s infinite;
      }

      .whatsapp-float:hover {
        background-color: #128c7e;
        transform: scale(1.1);
      }

      /* Animations */
      @keyframes fadeIn {
        from {
          opacity: 0;
        }
        to {
          opacity: 1;
        }
      }

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

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

      @keyframes pulse {
        0% {
          box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
        }
        70% {
          box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
        }
        100% {
          box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
        }
      }

      /* Responsive Styles */
      @media (max-width: 992px) {
        .civil-container {
          grid-template-columns: 1fr;
          gap: 3rem;
        }

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

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

        nav {
          position: fixed;
          top: 70px;
          left: -100%;
          width: 80%;
          height: calc(50vh - 70px);
          background-color: black;
          box-shadow: var(--shadow);
          transition: all 0.3s;
          z-index: 999;
        }

        nav.active {
          left: 0;
        }

        nav ul {
          flex-direction: column;
          padding: 2rem;
        }

        nav ul li {
          margin: 1rem 0;
        }

        .services-hero h2 {
          font-size: 2.8rem;
        }

        .services-hero p {
          font-size: 1.1rem;
        }

        .section-title h2 {
          font-size: 2.3rem;
        }
      }

      @media (max-width: 480px) {
        .logo h1 {
          font-size: 1.5rem;
        }

        .services-hero h2 {
          font-size: 2.3rem;
        }

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

        .btn {
          padding: 0.7rem 1.5rem;
        }

        .services-grid {
          grid-template-columns: 1fr;
        }
      }