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

    :root {
      --primary: #16a085;
      --secondary: #1abc9c;
      --accent: #f39c12;
      --dark: #2c3e50;
      --light: #ffffff;
    }

    body {
      font-family: "Poppins", sans-serif;
      line-height: 1.6;
      color: var(--dark);
      overflow-x: hidden;
    }

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

    /* Loading Screen */
    .loader {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      z-index: 9999;
      transition: opacity 0.5s;
    }

    .loader.hidden {
      opacity: 0;
      pointer-events: none;
    }

    .spinner {
      width: 50px;
      height: 50px;
      border: 4px solid rgba(255, 255, 255, 0.3);
      border-top-color: white;
      border-radius: 50%;
      animation: spin 1s linear infinite;
    }

    @keyframes spin {
      to {
        transform: rotate(360deg);
      }
    }

    /* Header */
    header {
      background: #fff;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
      position: sticky;
      top: 0;
      z-index: 1000;
    }

    nav {
      max-width: 1200px;
      margin: 0 auto;
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 1rem 1.5rem;
    }

    .logo {
      font-size: 1.3rem;
      font-weight: bold;
      color: var(--primary);
    }

    .nav-links {
      display: flex;
      gap: 2rem;
      list-style: none;
    }

    .nav-links a {
      text-decoration: none;
      color: #333;
      font-weight: 500;
      transition: color 0.3s;
      font-size: 0.95rem;
    }

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

    .menu-toggle {
      display: none;
      flex-direction: column;
      cursor: pointer;
    }

    .menu-toggle span {
      width: 25px;
      height: 3px;
      background: #333;
      margin: 3px 0;
      transition: 0.3s;
    }

    /* Hero Section */
    .hero {
      background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
      color: white;
      padding: 3rem 1.5rem;
    }

    .hero-content {
      max-width: 1200px;
      margin: 0 auto;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
      align-items: center;
    }

    .hero-text h1 {
      font-size: 2.8rem;
      margin-bottom: 1rem;
    }

    .hero-text p {
      font-size: 1.1rem;
      margin-bottom: 2rem;
      opacity: 0.95;
    }

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

    .btn {
      padding: 0.8rem 2rem;
      border: none;
      border-radius: 5px;
      cursor: pointer;
      font-size: 1rem;
      font-weight: 600;
      transition: all 0.3s;
      text-decoration: none;
      display: inline-block;
    }

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

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    }

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

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

    .hero-image {
      text-align: center;
    }

    .hero-image img {
      width: 100%;
      max-width: 500px;
      height: auto;
      border-radius: 10px;
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    }

    /* Section Styles */
    section {
      padding: 80px 20px;
    }

    .section-title {
      text-align: center;
      font-size: 2.5rem;
      margin-bottom: 50px;
      color: var(--dark);
      position: relative;
    }

    .section-title::after {
      content: "";
      display: block;
      width: 80px;
      height: 4px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
      margin: 15px auto;
      border-radius: 2px;
    }

    /* About Section */
    .about-content {
      display: grid;
      grid-template-columns: 1fr 1.5fr;
      gap: 50px;
      align-items: center;
    }

    .about-img-wrapper {
      position: relative;
    }

    .about-img {
      width: 100%;
      height: auto;
      border-radius: 15px;
      box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
      transition: transform 0.3s;
    }

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

    .experience-badge {
      position: absolute;
      bottom: 15px;
      right: 15px;
      background: white;
      padding: 15px 20px;
      border-radius: 12px;
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
      text-align: center;
    }

    .experience-badge .number {
      font-size: 2rem;
      font-weight: 700;
      color: var(--primary);
    }

    .experience-badge .label {
      font-size: 0.85rem;
      color: #666;
    }

    .about-text h3 {
      color: var(--primary);
      margin-bottom: 20px;
      font-size: 1.8rem;
    }

    .about-text p {
      margin-bottom: 20px;
      color: #555;
      line-height: 1.8;
    }

 

    /* Subjects Section */
    .subjects-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 35px;
    }

    .subject-card {
      perspective: 1000px;
      height: 350px;
    }

    .card-inner {
      position: relative;
      width: 100%;
      height: 100%;
      transition: transform 0.6s;
      transform-style: preserve-3d;
    }

    .subject-card:hover .card-inner {
      transform: rotateY(180deg);
    }

    .card-front,
    .card-back {
      position: absolute;
      width: 100%;
      height: 100%;
      backface-visibility: hidden;
      border-radius: 15px;
      padding: 35px;
      box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    }

    .card-front {
      background: white;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      text-align: center;
    }

    .card-back {
      background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
      color: white;
      transform: rotateY(180deg);
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .subject-icon {
      font-size: 3.5rem;
      color: var(--primary);
      margin-bottom: 20px;
    }

    .card-front h3 {
      font-size: 1.6rem;
      margin-bottom: 12px;
      color: var(--dark);
    }

    .card-front p {
      color: #666;
      font-size: 0.95rem;
    }

    .card-back h3 {
      margin-bottom: 18px;
      font-size: 1.4rem;
    }

    .card-back ul {
      list-style: none;
    }

    .card-back li {
      padding: 7px 0;
      padding-left: 25px;
      position: relative;
      font-size: 0.95rem;
    }

    .card-back li::before {
      content: "✓";
      position: absolute;
      left: 0;
      font-weight: bold;
    }

    /* Video Section */
    .videos-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 35px;
    }

    .video-card {
      background: white;
      border-radius: 15px;
      overflow: hidden;
      box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
      transition: transform 0.3s, box-shadow 0.3s;
    }

    .video-card:hover {
      transform: translateY(-10px);
      box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
    }

    .video-wrapper {
      position: relative;
      width: 100%;
      padding-bottom: 56.25%;
      background: #000;
    }

    .video-wrapper iframe {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
    }

    /* Gallery Section */
    .gallery-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
      gap: 20px;
    }

    .gallery-item {
      position: relative;
      overflow: hidden;
      border-radius: 15px;
      cursor: pointer;
      height: 250px;
      box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    }

    .gallery-item img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s;
    }

    .gallery-item:hover img {
      transform: scale(1.2);
    }

    .gallery-overlay {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: linear-gradient(135deg, rgba(22, 160, 133, 0.9) 0%, rgba(26, 188, 156, 0.9) 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-direction: column;
      opacity: 0;
      transition: opacity 0.3s;
    }

    .gallery-item:hover .gallery-overlay {
      opacity: 1;
    }

    .gallery-overlay i {
      color: white;
      font-size: 2rem;
      margin-bottom: 10px;
    }

    .gallery-overlay p {
      color: white;
      font-weight: 600;
    }

    .view-more-btn {
      text-align: center;
      margin-top: 35px;
    }

    .view-more-btn .btn {
      background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
      color: white;
      padding: 12px 35px;
      font-size: 1rem;
    }

    .view-more-btn .btn:hover {
      transform: translateY(-3px);
      box-shadow: 0 10px 30px rgba(22, 160, 133, 0.4);
    }

    /* Gallery Modal */
    .gallery-modal {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.95);
      z-index: 10000;
      align-items: center;
      justify-content: center;
    }

    .gallery-modal.active {
      display: flex;
    }

    .modal-content {
      position: relative;
      max-width: 90%;
      max-height: 90%;
    }

    .modal-content img {
      width: 100%;
      height: auto;
      max-height: 90vh;
      object-fit: contain;
      border-radius: 10px;
    }

    .modal-close {
      position: absolute;
      top: 15px;
      right: 25px;
      color: white;
      font-size: 35px;
      cursor: pointer;
      z-index: 10001;
    }

    .modal-prev,
    .modal-next {
      position: absolute;
      top: 50%;
      transform: translateY(-50%);
      color: white;
      font-size: 35px;
      cursor: pointer;
      padding: 18px;
      background: rgba(255, 255, 255, 0.1);
      border-radius: 50%;
      transition: background 0.3s;
    }

    .modal-prev:hover,
    .modal-next:hover {
      background: rgba(255, 255, 255, 0.2);
    }

    .modal-prev {
      left: 25px;
    }

    .modal-next {
      right: 25px;
    }

    /* Contact Section */
    .contact-wrapper {
      background: linear-gradient(135deg, rgba(22, 160, 133, 0.05) 0%, rgba(26, 188, 156, 0.05) 100%);
      padding: 70px 20px;
    }

    .contact-info-cards {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 25px;
      max-width: 1000px;
      margin: 0 auto;
    }

    .contact-card {
      background: white;
      padding: 35px 25px;
      border-radius: 15px;
      box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      gap: 18px;
      transition: transform 0.3s, box-shadow 0.3s;
    }

    .contact-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    }

    .contact-icon {
      width: 65px;
      height: 65px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
      color: white;
      border-radius: 15px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.6rem;
    }

    .contact-details h4 {
      margin-bottom: 5px;
      color: var(--dark);
      font-size: 1.1rem;
    }

    .contact-details p {
      color: #666;
      font-size: 0.95rem;
      margin: 3px 0;
    }

    /* Social Float Buttons */
    .social-float-buttons {
      position: fixed;
      bottom: 25px;
      right: 25px;
      display: flex;
      flex-direction: column;
      gap: 12px;
      z-index: 998;
    }

    .float-btn {
      width: 55px;
      height: 55px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.6rem;
      box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
      cursor: pointer;
      transition: all 0.3s;
      text-decoration: none;
      color: white;
    }

    .float-btn:hover {
      transform: translateY(-5px) scale(1.1);
    }

    .whatsapp-float {
      background: #25D366;
    }

    .whatsapp-float:hover {
      background: #128C7E;
    }

    .facebook-float {
      background: #1877F2;
    }

    .facebook-float:hover {
      background: #0d5dbf;
    }

    /* Back to Top Button */
    .back-to-top {
      position: fixed;
      bottom: 25px;
      left: 25px;
      width: 48px;
      height: 48px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
      color: white;
      border: none;
      border-radius: 50%;
      cursor: pointer;
      font-size: 1.3rem;
      box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
      opacity: 0;
      pointer-events: none;
      transition: all 0.3s;
      z-index: 999;
    }

    .back-to-top.visible {
      opacity: 1;
      pointer-events: all;
    }

    .back-to-top:hover {
      transform: translateY(-5px);
    }

    /* Footer */
    footer {
      background: var(--dark);
      color: white;
      padding: 45px 20px 25px;
    }

    .footer-content {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 35px;
      margin-bottom: 35px;
    }

    .footer-about h3 {
      margin-bottom: 18px;
      color: var(--accent);
    }

    .footer-about p {
      color: #cbd5e0;
      line-height: 1.8;
      font-size: 0.95rem;
    }

    .footer-links h4 {
      margin-bottom: 18px;
      color: var(--accent);
    }

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

    .footer-links a {
      color: #cbd5e0;
      text-decoration: none;
      display: block;
      padding: 7px 0;
      transition: color 0.3s;
      font-size: 0.95rem;
    }

    .footer-links a:hover {
      color: white;
      padding-left: 5px;
    }

    .social-links {
      display: flex;
      gap: 12px;
      margin-top: 18px;
    }

    .social-links a {
      width: 42px;
      height: 42px;
      background: rgba(255, 255, 255, 0.1);
      color: white;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      font-size: 1.1rem;
      transition: all 0.3s;
    }

    .social-links a:hover {
      background: var(--primary);
      transform: translateY(-5px);
    }

    .footer-bottom {
      text-align: center;
      padding-top: 25px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      color: #cbd5e0;
      font-size: 0.9rem;
    }

    /* Responsive Styles */
    @media (max-width: 968px) {
      .menu-toggle {
        display: flex;
      }

      .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 1rem;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
        display: none;
        gap: 0.5rem;
      }

      .nav-links.active {
        display: flex;
      }

      .nav-links li {
        width: 100%;
      }

      .nav-links a {
        display: block;
        padding: 0.8rem;
      }

      .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
      }

      .hero-text h1 {
        font-size: 2rem;
      }

      .hero-text p {
        font-size: 1rem;
      }

      .hero-image img {
        max-width: 80%;
      }

      .about-content {
        grid-template-columns: 1fr;
        gap: 30px;
      }

      .experience-badge {
        bottom: 10px;
        right: 10px;
        padding: 12px 15px;
      }

      .experience-badge .number {
        font-size: 1.6rem;
      }

      .timeline-header {
        flex-direction: column;
        align-items: flex-start;
      }

      .timeline-title {
        font-size: 1.2rem;
      }

      .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
      }

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

      section {
        padding: 60px 20px;
      }

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

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

      .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 15px;
      }

      .gallery-item {
        height: 180px;
      }
    }

    @media (max-width: 600px) {
      .logo {
        font-size: 1.1rem;
      }

      nav {
        padding: 0.8rem 1rem;
      }

      .hero {
        padding: 2rem 1rem;
      }

      .hero-text h1 {
        font-size: 1.8rem;
      }

      .cta-buttons {
        flex-direction: column;
      }

      .btn {
        width: 100%;
        text-align: center;
      }

      .subject-card {
        height: 320px;
      }

      .card-front h3 {
        font-size: 1.4rem;
      }

      .subject-icon {
        font-size: 3rem;
      }

      .modal-prev,
      .modal-next {
        font-size: 28px;
        padding: 12px;
      }

      .modal-prev {
        left: 10px;
      }

      .modal-next {
        right: 10px;
      }

      .modal-close {
        top: 10px;
        right: 15px;
        font-size: 30px;
      }

      .social-float-buttons {
        right: 15px;
        bottom: 15px;
        gap: 10px;
      }

      .float-btn {
        width: 48px;
        height: 48px;
        font-size: 1.4rem;
      }

      .back-to-top {
        left: 15px;
        bottom: 15px;
        width: 42px;
        height: 42px;
        font-size: 1.1rem;
      }

      .timeline-item {
        padding: 20px;
      }

      .timeline-icon {
        width: 45px;
        height: 45px;
        font-size: 1.3rem;
      }

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

      .video-wrapper {
        padding-bottom: 75%;
      }
    }

    @media (max-width: 400px) {
      .hero-text h1 {
        font-size: 1.5rem;
      }

      .hero-text p {
        font-size: 0.9rem;
      }

      .section-title {
        font-size: 1.7rem;
      }

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

      .gallery-item {
        height: 220px;
      }
    }

    .hidden-gallery {
      display: none;
    }