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

  body {
    font-family: 'Segoe UI', Roboto, Arial, sans-serif;
    scroll-behavior: smooth;
  }

  :root {
    --primary-color: #002e45;
    --secondary-color: #0dcaf0;
    --font-family: 'Nunito', sans-serif;
  }

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

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

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


  /* Navbar */
  .navbar {
    background-color: var(--primary-color);
  }

  .navbar .nav-link {
    color: #fff !important;
    font-weight: 600;
  }

  .navbar .nav-link:hover {
    color: var(--secondary-color) !important;
  }

  /* Search Box */
  .navbar .input-group .form-control {
    border-radius: 0.5rem 0 0 0.5rem;
    border: none;
    outline: none;
  }

  .navbar .input-group .btn {
    background-color: var(--secondary-color);
    color: var(--primary-color);
    font-weight: 600;
    border-radius: 0 0.5rem 0.5rem 0;
    border: none;
  }

  /* Sidebar Styling */
  #sidebar {
    position: fixed;
    top: 0;
    left: -260px;
    width: 260px;
    height: 100%;
    background: #002e45;
    color: #FFF;
    padding: 20px;
    transition: all 0.3s ease-in-out;
    z-index: 9999;
  }

  #sidebar.active {
    left: 0;
  }

  #sidebar h5 {
    font-weight: bold;
  }

  #sidebar .close-btn {
    font-size: 28px;
    cursor: pointer;
    color: #FFF;
  }

  #sidebar ul li {
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  }

  #sidebar ul li:last-child {
    border-bottom: none;
  }

  #sidebar .nav-link {
    color: #FFF;
    padding: 12px 0;
    display: block;
    text-decoration: none;
    transition: 0.3s;
  }

  #sidebar .nav-link:hover {
    color: #0dcaf0;
    padding-left: 5px;
  }

  /* Collapse icon rotation */
  #sidebar .nav-item .collapsed i {
    transform: rotate(0deg);
    transition: transform 0.3s;
  }

  #sidebar .nav-item .collapse.show+i,
  #sidebar .nav-item[aria-expanded="true"] i {
    transform: rotate(180deg);
  }


  /* Large device category hover */
  @media(min-width:992px) {
    .dropdown:hover .dropdown-menu {
      display: block;
    }
  }


  /* Banner Section */
  .banner {
    position: relative;
    background: url('../img/gani.jpg') center/cover no-repeat;
    height: 70vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
    text-align: center;
  }

  /* Dark overlay */
  .banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    /* adjust transparency if needed */
    z-index: 1;
  }

  /* Banner content above overlay */
  .banner-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    padding: 0 15px;
  }

  /* Title */
  .banner h1 {
    font-size: 3rem;
    font-weight: 700;
    text-shadow: 3px 3px 15px rgba(0, 0, 0, 0.7);
    margin-bottom: 15px;
    color: #fff;
    /* always visible over overlay */
  }

  /* Subtitle */
  .banner p {
    font-size: 1.3rem;
    margin-bottom: 25px;
    text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.6);
    color: #fff;
  }



  .banner .btn-primary:hover {
    background-color: var(--primary-color) !important;
    /* hover color */
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
  }

  /* Responsive */
  @media (max-width: 1200px) {
    .banner h1 {
      font-size: 2.5rem;
    }

    .banner p {
      font-size: 1.2rem;
    }
  }

  @media (max-width: 768px) {
    .banner {
      height: 50vh;
      padding: 0 15px;
    }

    .banner h1 {
      font-size: 2rem;
    }

    .banner p {
      font-size: 1rem;
    }

    .banner .btn-primary {
      padding: 10px 20px;
      font-size: 0.9rem;
    }
  }

  /* btn */

  .btn-quote {
    background: #ffc107;
    color: #000;
    font-weight: 700;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    transition: 0.3s;
  }


  .btn-quote:hover {
    background: #e0a800;
    color: #cdc8c8;
  }

  .btn-primary {

    background: #ffc107 !important;

    font-weight: 700 !important;
    padding: 0.5rem 1rem !important;
    border-radius: 25px !important;
    transition: 0.3s !important;

  }

  .btn-primary:hover {
    background: #e0a800 !important;
    color: #cdc8c8 !important;
  }

  /* about section */

  #about h2.position-relative {
    display: inline-block;
  }

  #about .underline {
    content: '';
    display: block;
    width: 100%;
    height: 3px;
    background-color: #0dcaf0;
    margin: 5px auto 0;
    border-radius: 2px;
  }

  /* Highlight boxes */
  .highlight-box {
    transition: transform 0.3s, box-shadow 0.3s;
  }

  .highlight-box:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  }

  /* Text */
  #about h2.fw-bold {
    font-size: 1.75rem;
  }

  #about p.text-muted {
    font-size: 1rem;
  }

  .text-primary {
    color: #0dcaf0 !important;
  }

  /* about section  end*/

  /* Services */

  .Services {
    padding: 10px 0px;
    padding-top: 150px;
  }

  .service-card-custom {
    transition: all 0.3s ease-in-out;
    border: 1px solid #eee;
  }

  .service-card-custom:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
    border-color: #0dcaf0;
  }

  .service-card-custom .icon-box {
    width: 70px;
    height: 70px;
    margin: 0 auto;
    border-radius: 50%;
    background: #002E45;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 30px;
    transition: 0.3s;
  }

  .service-card-custom:hover .icon-box {
    background: #0bb3d9;
    transform: rotate(10deg);
  }



  /* Services end*/

  /* Gallery Section  */

  .gallery {
    padding-top: 120px;
  }


  .small-letter {
    letter-spacing: 2px;

  }

  .gallery-item {
    overflow: hidden;
    border-radius: 16px;
    position: relative;
  }

  .gallery-item img {
    transition: transform .35s ease;
    width: 100%;
    display: block;
  }

  .gallery-item:hover img {
    transform: scale(1.08);
  }


  /* Gallery Section  end */


  /* Floating WhatsApp */

  .whatsapp-float {
    position: fixed;
    width: 60px;
    height: 60px;
    bottom: 55px;
    right: 20px;
    background-color: #25d366;
    color: #fff;
    border-radius: 50%;
    text-align: center;
    font-size: 30px;
    box-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000 !important;

    /* Animation (bounce + pulse) */
    animation: floatUpDown 2s ease-in-out infinite, pulse 2s infinite;
  }

  /* Icon center */
  .whatsapp-float i {
    line-height: 1;
  }

  /* Up & down animation */
  @keyframes floatUpDown {

    0%,
    100% {
      transform: translateY(0);
    }

    50% {
      transform: translateY(-12px);
    }
  }

  /* Glow pulse animation */
  @keyframes pulse {
    0% {
      box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.6);
    }

    70% {
      box-shadow: 0 0 0 20px rgba(37, 211, 102, 0);
    }

    100% {
      box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
    }
  }

  /* Mobile responsive */
  @media (max-width: 768px) {
    .whatsapp-float {
      width: 50px;
      height: 50px;
      font-size: 24px;
      bottom: 20px;
      right: 15px;
    }
  }




  /* contact css */

  .contact-section {
    background: linear-gradient(to right, #f8f9fa, #eef2f7);
  }

  .section-title {
    font-size: 2.5rem;
    color: #0d6efd;
    position: relative;
    display: inline-block;
  }

  .section-title::after {
    content: "";
    width: 60px;
    height: 3px;
    background: #0d6efd;
    display: block;
    margin: 10px auto 0;
    border-radius: 2px;
  }

  .contact-card,
  .contact-info {
    transition: transform 0.3s, box-shadow 0.3s;
  }

  .contact-card:hover,
  .contact-info:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
  }

  .form-control {
    border-radius: 10px;
    border: 1px solid #ced4da;
  }

  .form-control:focus {
    border-color: #0d6efd;
    box-shadow: 0 0 8px rgba(13, 110, 253, 0.3);
  }

  .btn-primary {
    background: linear-gradient(45deg, #0d6efd, #0a58ca);
    border: none;
  }

  .btn-primary:hover {
    background: linear-gradient(45deg, #0a58ca, #0d6efd);
    transform: translateY(-2px);
  }

  .icon-circle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    background: #0d6efd;
    color: #fff;
    margin-right: 10px;
  }

  /* contact css */

  /* footer */

  footer {
    background-color: #002e45;
    color: #fff;
    padding: 40px 0;
  }

  .list-unstyled li a {
    text-decoration: none;
    /* underline বাদ যাবে */
    color: #0dcaf0;
    /* link color সেট হবে */
    transition: color 0.3s;
    /* hover effect smooth */
  }

  .list-unstyled li a:hover {
    color: #0a58ca;
    /* hover করলে গাঢ় নীল হবে */
  }



  /* Banner */
  /* Banner Section */
  .banner {
    position: relative;
    background: url('../img/hero.jpg') center/cover no-repeat;
    height: 70vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
    text-align: center;
  }

  /* Dark overlay */
  .banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    /* adjust transparency if needed */
    z-index: 1;
  }

  /* Banner content above overlay */
  .banner-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    padding: 0 15px;
  }

  /* Title */
  .banner h1 {
    font-size: 3rem;
    font-weight: 700;
    text-shadow: 3px 3px 15px rgba(0, 0, 0, 0.7);
    margin-bottom: 15px;
    color: #fff;
    /* always visible over overlay */
  }

  /* Subtitle */
  .banner p {
    font-size: 1.3rem;
    margin-bottom: 25px;
    text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.6);
    color: #fff;
  }



  .banner .btn-primary:hover {
    background-color: var(--primary-color) !important;
    /* hover color */
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
  }

  /* Responsive */
  @media (max-width: 1200px) {
    .banner h1 {
      font-size: 2.5rem;
    }

    .banner p {
      font-size: 1.2rem;
    }
  }

  @media (max-width: 768px) {
    .banner {
      height: 50vh;
      padding: 0 15px;
    }

    .banner h1 {
      font-size: 2rem;
    }

    .banner p {
      font-size: 1rem;
    }

    .banner .btn-primary {
      padding: 10px 20px;
      font-size: 0.9rem;
    }
  }