:root {
            --primary-blue: #007bff;
            --secondary-green: #28a745;
            --dark-text: #343a40;
            --light-bg: #f8f9fa;
            --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --secondary-blue: #17a2b8;
        }

        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: var(--font-family); line-height: 1.6; background-color: white; color: var(--dark-text); }
        a { text-decoration: none; color: var(--primary-blue); }
        h1, h2, h3 { color: var(--dark-text); line-height: 1.2; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 5%; }

        .navbar {
            display: flex;
            justify-content: space-around;
            align-items: center;
            padding: 1rem 5%;
            background-color: white;
            border-bottom: 1px solid #e9ecef;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .logo-text { font-size: 1.8rem; font-weight: 700; }
        .logo-text span:first-child { color: var(--dark-text); }
        .logo-text span:last-child { color: var(--primary-blue); }
        .nav-links { display: flex; gap: 2rem; list-style: none; }
        .nav-links a { color: var(--dark-text); font-weight: 500; transition: color 0.3s; }
        .nav-links a:hover { color: var(--primary-blue); }

        .footer {
            text-align: center;
            padding: 2rem 5%;
            background-color: var(--dark-text);
            color: white;
            font-size: 0.9rem;
        }

        .hero {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 6rem 5%;
            max-width: 1200px;
            margin: 0 auto;
            gap: 4rem;
        }
        .hero-content { flex: 1; max-width: 50%; }
        .hero-title { font-size: 3.5rem; margin-bottom: 1rem; color: var(--dark-text); }
        .hero-tagline { font-size: 1.5rem; color: #6c757d; margin-bottom: 2rem; }
        .hero-cta {
            display: inline-block;
            padding: 0.85rem 2.5rem;
            font-size: 1.2rem;
            font-weight: 700;
            color: white;
            background-color: var(--primary-blue);
            border-radius: 8px;
            transition: background-color 0.3s, transform 0.2s;
            box-shadow: 0 4px 10px rgba(0, 123, 255, 0.3);
        }
        .hero-cta:hover { background-color: #0056b3; transform: translateY(-2px); }

        .hero-image {
            flex: 1;
            height: 300px;
            border-radius: 12px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
            overflow: hidden; 
        }

        .hero-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 12px;
        }
        
        .hidden {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.8s ease-out, transform 0.8s ease-out;
        }
        .visible {
            opacity: 1;
            transform: translateY(0);
        }

        .mission-section, .courses-section, .full-courses-section, .contact-section {
            opacity: 0;
            transition: opacity 1.2s ease-out;
        }
        .mission-section.visible, .courses-section.visible, .full-courses-section.visible, .contact-section.visible {
            opacity: 1;
        }

        .mission-section {
            padding: 4rem 5%;
            background-color: var(--light-bg);
        }
        .mission-content {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            gap: 4rem;
            align-items: center;
        }
        .mission-text { flex: 1; padding-right: 2rem; }
        .mission-text h2 { font-size: 2.5rem; color: var(--secondary-green); margin-bottom: 1.5rem; }
        .mission-text p { margin-bottom: 1rem; font-size: 1.1rem; color: #555; }
        
        .mission-image {
            flex: 1;
            height: 300px;
            border-radius: 8px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
            overflow: hidden;
        }
        .mission-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 8px;
        }


        .courses-section {
            padding: 4rem 5%;
            text-align: center;
            max-width: 1200px;
            margin: 0 auto;
        }
        .courses-section h2 { font-size: 2.5rem; margin-bottom: 1rem; color: var(--primary-blue); }
        .courses-section > p { font-size: 1.2rem; color: #6c757d; margin-bottom: 3rem; }
        .course-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
        .course-card {
            background-color: var(--light-bg);
            border-radius: 10px;
            padding: 1.5rem;
            text-align: left;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s;
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.8s ease-out, transform 0.8s ease-out, box-shadow 0.3s, transform 0.3s;
        }
        .course-card.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .course-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
        }
        .card-image {
            height: 80px; width: 80px; border-radius: 50%;
            background-color: white; display: flex; align-items: center;
            justify-content: center; font-size: 2rem; margin-bottom: 1rem;
        }
        .card-content h3 { font-size: 1.5rem; margin-bottom: 0.5rem; }
        .card-content p { font-size: 1rem; color: #555; margin-bottom: 1rem; }
        .start-btn { color: var(--primary-blue); font-weight: 600; display: inline-block; }

       
        .full-courses-section {
            padding: 4rem 5%;
            background-color: white;
            max-width: 1200px;
            margin: 0 auto;
        }

        .full-courses-section h2 {
            font-size: 2.5rem; color: var(--primary-blue);
            margin-bottom: 3rem; text-align: center;
        }
        .course-listing-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2.5rem;
        }
        .course-card-full {
            background-color: white;
            border-radius: 10px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
            overflow: hidden;
            transition: transform 0.3s, box-shadow 0.3s;
            text-decoration: none;
            color: inherit;
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.8s ease-out, transform 0.8s ease-out, box-shadow 0.3s, transform 0.3s;
        }
        .course-card-full.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .course-card-full:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
        }
        .course-card-full .card-img {
            height: 180px; background-color: #f0f8ff; 
            display: flex; align-items: center; justify-content: center;
            font-size: 3rem; color: var(--dark-text);
        }
        .course-card-full .card-details { padding: 1.5rem; }
        .course-card-full h3 { font-size: 1.5rem; margin-bottom: 0.5rem; color: var(--dark-text); }
        .course-card-full .level {
            display: inline-block; background-color: var(--secondary-green);
            color: white; padding: 0.25rem 0.75rem; border-radius: 4px;
            font-size: 0.85rem; font-weight: 600; margin-bottom: 1rem;
        }
        .course-card-full .info-row {
            display: flex; justify-content: space-between; margin-top: 1rem;
            padding-top: 1rem; border-top: 1px solid #eee;
            font-size: 0.95rem; color: #6c757d;
        }

        .contact-section {
            padding: 4rem 5%;
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            gap: 4rem;
            background-color: var(--light-bg);
            border-radius: 10px;
            margin-bottom: 4rem;
        }

        .contact-info, .contact-form-container { flex: 1; }
        .contact-section h2 {
            font-size: 2.5rem; color: var(--dark-text);
            margin-bottom: 2rem; border-bottom: 3px solid var(--primary-blue);
            padding-bottom: 0.5rem;
        }
        .contact-form input:focus, .contact-form textarea:focus {
            border-color: var(--primary-blue); outline: none;
            box-shadow: 0 0 5px rgba(0, 123, 255, 0.2);
        }
        .submit-btn {
            display: inline-block; padding: 0.75rem 2rem;
            font-size: 1.1rem; font-weight: 600; color: white;
            background-color: var(--secondary-green); border: none;
            border-radius: 5px; cursor: pointer; transition: background-color 0.3s;
        }
        .submit-btn:hover { background-color: #218838; }

        .contact-form label { display: block; margin-bottom: 0.5rem; font-weight: 500; color: var(--dark-text); }
        .contact-form input[type="text"], .contact-form input[type="email"], .contact-form textarea {
            width: 100%; padding: 0.75rem; margin-bottom: 1.5rem; border: 1px solid #ccc;
            border-radius: 5px; font-family: inherit; font-size: 1rem; transition: border-color 0.3s;
        }
        .contact-form textarea { resize: vertical; min-height: 150px; }
        .contact-info-item {
            display: flex; align-items: flex-start; margin-bottom: 1.5rem;
            font-size: 1.1rem; color: #6c757d;
        }
        .contact-info-item strong {
            color: var(--primary-blue); margin-right: 15px;
            font-size: 1.5rem; line-height: 1.5;
        }



        .codeArenaX9 {
       display: flex;
  justify-content: space-between;
  align-items: center;
  background: #111;
  border-radius: 18px;
  box-shadow: 0 0 40px rgba(0, 0, 0, 0.25);
  padding: 40px 80px;
  width: 90%;
  max-width: 1100px;
  margin: 100px auto;
    }

    .textBlockZ7 {
      flex: 1;
    }

    .textBlockZ7 h1 {
      font-size: 3rem;
      color: #00ff99;
      margin-bottom: 20px;
    }

    .textBlockZ7 p {
      color: #c9c9c9;
      font-size: 1.1rem;
      margin-bottom: 30px;
    }

    .actionBtnK5 {
      display: inline-block;
      text-decoration: none;
      background: #00ff99;
      color: #0d0d0d;
      font-weight: 600;
      padding: 14px 34px;
      border-radius: 35px;
      transition: all 0.3s ease;
    }

    .actionBtnK5:hover {
      background: #00cc7d;
      transform: scale(1.06);
    }

    .imageBoxQ2 {
      flex: 1;
      display: flex;
      justify-content: flex-end;
    }

    .imageBoxQ2 img {
      width: 420px;
      border-radius: 14px;
      box-shadow: 0 0 20px rgba(0, 255, 153, 0.3);
    }

    @media (max-width: 900px) {
      .codeArenaX9 {
        flex-direction: column;
        text-align: center;
        padding: 40px 20px;
      }

      .imageBoxQ2 {
        justify-content: center;
        margin-top: 25px;
      }

      .imageBoxQ2 img {
        width: 100%;
        max-width: 350px;
      }
    }

    @media (max-width: 992px) {
  .hero {
    flex-direction: column;
    text-align: center;
    gap: 2rem;
    padding: 4rem 3%;
  }

  .hero-content {
    max-width: 100%;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-tagline {
    font-size: 1.2rem;
  }

  .hero-image {
    width: 100%;
    height: auto;
  }

  .mission-content {
    flex-direction: column;
    gap: 2rem;
  }

  .mission-text {
    padding-right: 0;
    text-align: center;
  }

  .contact-section {
    flex-direction: column;
    text-align: center;
  }

  .contact-info-item {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    flex-direction: column;
    width: 100%;
    background: white;
    position: absolute;
    top: 70px;
    left: 0;
    padding: 1.5rem 0;
    border-top: 1px solid #e9ecef;
  }

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

  .navbar {
    flex-wrap: wrap;
    position: relative;
  }

  .menu-toggle {
    display: block;
    cursor: pointer;
    font-size: 1.7rem;
    color: var(--dark-text);
  }

  .hero {
    padding: 3rem 5%;
  }

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

  .hero-tagline {
    font-size: 1.1rem;
  }

  .hero-cta {
    font-size: 1rem;
    padding: 0.7rem 1.8rem;
  }

  .mission-content,
  .course-grid,
  .course-listing-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .contact-section {
    padding: 3rem 5%;
    gap: 2rem;
  }

  .codeArenaX9 {
    flex-direction: column;
    text-align: center;
    padding: 30px 20px;
  }

  .imageBoxQ2 {
    justify-content: center;
    margin-top: 20px;
  }

  .imageBoxQ2 img {
    width: 100%;
    max-width: 350px;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 0.95rem;
  }

  .logo-text {
    font-size: 1.4rem;
  }

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

  .hero-tagline {
    font-size: 1rem;
  }

  .hero-cta {
    font-size: 0.9rem;
    padding: 0.6rem 1.4rem;
  }

  .course-card,
  .course-card-full {
    padding: 1rem;
  }

  .footer {
    font-size: 0.8rem;
  }
}


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

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.8rem;
  cursor: pointer;
  color: var(--dark-text);
  z-index: 2001;
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
    position: absolute;
    right: 20px;
    top: 18px;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    width: 100%;
    background: white;
    position: absolute;
    top: 65px;
    left: 0;
    border-top: 1px solid #eee;
    box-shadow: 0 6px 20px rgba(0,0,0,0.06);
    z-index: 2000;
  }

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

  .nav-links li {
    text-align: center;
    padding: 12px 0;
    border-bottom: 1px solid #f1f1f1;
  }

  .nav-links li:last-child {
    border-bottom: none;
  }

  .hero {
    flex-direction: column;
    text-align: center;
    padding: 4rem 3%;
    gap: 2rem;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .hero-tagline {
    font-size: 1.1rem;
  }

  .hero-cta {
    font-size: 1rem;
    padding: 0.7rem 1.8rem;
  }

  .mission-content {
    flex-direction: column;
    text-align: center;
  }

  .contact-section {
    flex-direction: column;
    text-align: center;
    padding: 3rem 5%;
  }

  .codeArenaX9 {
    flex-direction: column;
    text-align: center;
    padding: 40px 20px;
  }

  .imageBoxQ2 {
    justify-content: center;
    margin-top: 25px;
  }

  .imageBoxQ2 img {
    width: 100%;
    max-width: 350px;
  }
}

@media (max-width: 480px) {
  .logo-text {
    font-size: 1.4rem;
  }

  .hero-title {
    font-size: 1.8rem;
  }

  .hero-tagline {
    font-size: 1rem;
  }

  .footer {
    font-size: 0.8rem;
  }
}

/* Profile Dropdown Styles */
.profile-nav-item {
  position: relative;
}

.profile-dropdown {
  position: relative;
}

.profile-trigger {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  transition: background-color 0.3s;
  font-family: var(--font-family);
  color: var(--dark-text);
  font-weight: 500;
}

.profile-trigger:hover {
  background-color: #f8f9fa;
}

.profile-nav-img {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--primary-blue);
}

.profile-nav-initial {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary-blue);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
}

.profile-nav-name {
  font-weight: 600;
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dropdown-arrow {
  font-size: 0.7rem;
  color: #6c757d;
  transition: transform 0.3s;
}

.profile-dropdown.active .dropdown-arrow {
  transform: rotate(180deg);
}

.profile-dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  background: white;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  min-width: 200px;
  z-index: 1001;
  overflow: hidden;
}

.profile-dropdown.active .profile-dropdown-menu {
  display: block;
}

.dropdown-item {
  display: block;
  padding: 0.75rem 1.25rem;
  color: var(--dark-text);
  text-decoration: none;
  transition: background-color 0.2s;
  border: none;
  width: 100%;
  text-align: left;
  font-family: var(--font-family);
  font-size: 0.95rem;
}

.dropdown-item:hover {
  background-color: #f8f9fa;
  color: var(--primary-blue);
}

/* Profile Modal Styles */
.profile-modal {
  display: none;
  position: fixed;
  z-index: 2000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  animation: fadeIn 0.3s;
}

.profile-modal.active {
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.profile-modal-content {
  background-color: white;
  border-radius: 12px;
  padding: 2rem;
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  animation: slideUp 0.3s;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

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

.profile-modal-close {
  position: absolute;
  right: 1.5rem;
  top: 1.5rem;
  font-size: 2rem;
  font-weight: 300;
  color: #999;
  cursor: pointer;
  line-height: 1;
  transition: color 0.2s;
}

.profile-modal-close:hover {
  color: var(--dark-text);
}

.profile-modal-content h2 {
  margin-bottom: 1.5rem;
  color: var(--dark-text);
  font-size: 1.8rem;
}

.profile-image-section {
  text-align: center;
  margin-bottom: 2rem;
}

.profile-image-preview {
  width: 120px;
  height: 120px;
  margin: 0 auto 1rem;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid var(--primary-blue);
  position: relative;
}

.profile-image-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.profile-image-placeholder {
  width: 100%;
  height: 100%;
  background: var(--primary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 3rem;
  font-weight: 700;
}

.profile-image-upload-btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background-color: var(--primary-blue);
  color: white;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  transition: background-color 0.3s;
  border: none;
  font-family: var(--font-family);
}

.profile-image-upload-btn:hover {
  background-color: #0056b3;
}

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

.profile-form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--dark-text);
}

.profile-form-group input {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid #e9ecef;
  border-radius: 8px;
  font-size: 1rem;
  font-family: var(--font-family);
  transition: border-color 0.3s;
}

.profile-form-group input:focus {
  outline: none;
  border-color: var(--primary-blue);
}

.profile-form-group input:disabled {
  background-color: #f8f9fa;
  color: #6c757d;
  cursor: not-allowed;
}

.profile-message {
  margin-bottom: 1rem;
  padding: 0.75rem;
  border-radius: 8px;
  font-weight: 600;
  display: none;
}

.profile-message.success {
  display: block;
  background-color: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.profile-message.error {
  display: block;
  background-color: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

.profile-form-actions {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

.profile-save-btn,
.profile-cancel-btn {
  flex: 1;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  font-family: var(--font-family);
}

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

.profile-save-btn:hover {
  background-color: #0056b3;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 123, 255, 0.3);
}

.profile-cancel-btn {
  background-color: #6c757d;
  color: white;
}

.profile-cancel-btn:hover {
  background-color: #5a6268;
}

/* Mobile Responsive for Profile */
@media (max-width: 768px) {
  .profile-nav-name {
    display: none;
  }

  .profile-dropdown-menu {
    right: -20px;
  }

  .profile-modal-content {
    padding: 1.5rem;
    margin: 1rem;
  }

  .profile-image-preview {
    width: 100px;
    height: 100px;
  }

  .profile-form-actions {
    flex-direction: column;
  }
}