:root {
      --bg: #f5f7fa;
      --card: #ffffff;
      --text: #1a365d;
      --muted: #4a5568;
      --primary: #2c5282;
      --primary-dark: #1a365d;
      --secondary: #2d3748;
      --accent: #3182ce;
      --border: #e2e8f0;
      --radius: 18px;
      --shadow: 0 5px 20px rgba(0,0,0,0.08);
      --shadow-hover: 0 8px 25px rgba(0,0,0,0.12);
      --transition: all 0.3s ease;
    }
    
    * {
      box-sizing: border-box;
    }
    
    body {
      margin: 0;
      background: var(--bg);
      color: var(--text);
      font-family: 'Cairo', sans-serif;
      line-height: 1.6;
      overflow-x: hidden;
      font-size: 14px;
    }
    
    .container {
      width: min(1200px, 90vw);
      margin: auto;
      padding: 0 15px;
    }
    
    /* Header Styles */
    header {
      background: var(--card);
      border-bottom: 1px solid var(--border);
      box-shadow: var(--shadow);
      position: sticky;
      top: 0;
      z-index: 100;
      transition: var(--transition);
    }
    
    .nav {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 10px 0;
      position: relative;
    }
    
    nav ul {
      display: none;
      flex-direction: column;
      position: absolute;
      top: 45px;
      right: 0;
      background: var(--card);
      box-shadow: var(--shadow);
      border-radius: var(--radius);
      padding: 6px;
      list-style: none;
      margin: 0;
      width: 180px;
      z-index: 50;
    }
    
    nav ul.show {
      display: flex;
    }
    
    nav a {
      color: var(--text);
      font-weight: 600;
      text-decoration: none;
      padding: 5px 10px;
      border-radius: 6px;
      transition: var(--transition);
      display: block;
      font-size: 13px;
      margin: 0;
    }
    
    nav a:hover {
      color: var(--card);
      background: var(--primary);
    }
    
    .menu-toggle {
      cursor: pointer;
      font-size: 14px;
      padding: 6px 10px;
      border-radius: 8px;
      background: var(--primary);
      color: var(--card);
      transition: var(--transition);
    }
    
    .menu-toggle:hover {
      background: var(--primary-dark);
    }
    
    .brand-logo {
      height: 35px;
      transition: var(--transition);
      float: left;
    }
    
    .brand-logo:hover {
      transform: scale(1.05);
    }
    
    /* Hero Section - Updated for horizontal layout */
    .hero {
      display: flex;
      flex-direction: row;
      align-items: center;
      justify-content: center;
      padding: 60px 0;
      text-align: center;
      background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
      min-height: 80vh;
      position: relative;
      z-index: 1;
      gap: 40px;
    }
    
    .hero-content {
      text-align: center;
      max-width: 500px;
      z-index: 2;
      flex: 1;
    }
    
    .hero-content h1 {
      font-size: 32px;
      margin: 0 0 20px;
      color: var(--text);
      position: relative;
      display: inline-block;
    }
    
    .hero-content h1::after {
      content: '';
      position: absolute;
      bottom: -8px;
      right: 0;
      width: 100%;
      height: 3px;
      background: var(--primary);
      border-radius: 3px;
    }
    
    .hero-content p {
      color: var(--muted);
      margin: 15px 0;
      font-size: 15px;
      line-height: 1.8;
    }
    
    .hero-content .highlight {
      color: var(--primary);
      font-weight: 700;
      line-height: 1.8;
    }
    
    .hero-welcome {
      font-weight: 700;
      font-size: 20px;
      color: var(--primary);
      margin-bottom: 25px;
    }
    
    .hero-image-container {
      text-align: center;
      flex: 0;
      display: flex;
      justify-content: center;
      align-items: center;
    }
    
    .hero img {
      width: 400px;
      height: auto;
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      transition: var(--transition);
      border: 4px solid var(--card);
    }
    
    .hero img:hover {
      transform: translateY(-10px);
      box-shadow: var(--shadow-hover);
    }
    
    /* Section Styles */
    section {
      padding: 35px 0;
      border-top: 1px solid var(--border);
    }
    
    .section-title {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 15px;
      justify-content: center;
      position: relative;
    }
    
    .section-title h2 {
      font-size: 22px;
      color: var(--primary);
      margin: 0;
      position: relative;
      padding-bottom: 10px;
    }
    
    .section-title h2::after {
      content: '';
      position: absolute;
      bottom: 0;
      right: 0;
      width: 60px;
      height: 3px;
      background: var(--primary);
      border-radius: 3px;
    }
    
    .section-title i {
      font-size: 20px;
      color: var(--primary);
    }
    
    .section-title .english-title {
      font-size: 16px;
      color: var(--muted);
      font-weight: normal;
      margin-right: 10px;
    }
    
    /* Card Styles */
    .card {
      background: var(--card);
      padding: 30px;
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      margin-bottom: 12px;
      text-align: right;
      transition: var(--transition);
      border-right: 4px solid var(--primary);
    }
    
    .card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
    }
    
    ul {
      list-style: none;
      padding: 0;
    }
    
    li {
      margin: 15px 0;
      line-height: 1.6;
      position: relative;
      padding-right: 25px;
      font-size: 14px;
    }
    
    li::before {
      content: '•';
      position: absolute;
      right: 0;
      color: var(--primary);
      font-weight: bold;
      font-size: 20px;
    }
    
    /* Button Styles */
    .btn {
      display: inline-block;
      padding: 12px 24px;
      border-radius: 12px;
      background: var(--primary);
      color: var(--card);
      font-weight: 700;
      text-decoration: none;
      transition: var(--transition);
      border: none;
      cursor: pointer;
      font-size: 11px;
      margin-top: 15px;
    }
    
    .btn:hover {
      background: var(--primary-dark);
      transform: translateY(-3px);
      box-shadow: 0 5px 15px rgba(44, 82, 130, 0.3);
    }
    
    .btn-outline {
      background: transparent;
      border: 2px solid var(--primary);
      color: var(--primary);
    }
    
    .btn-outline:hover {
      background: var(--primary);
      color: var(--card);
    }
    
    /* Footer Styles */
    footer {
      text-align: center;
      padding: 30px 0;
      border-top: 1px solid var(--border);
      color: var(--muted);
      background: var(--card);
    }
    
    footer p {
      font-size: 11px;
    }
    
    .footer-links {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 20px;
      margin-top: 15px;
      flex-wrap: wrap;
    }
    
    .footer-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--primary);
      text-decoration: none;
      font-size: 13px;
      font-weight: 500;
      transition: var(--transition);
      padding: 8px 12px;
      border-radius: 8px;
    }
    
    .footer-link:hover {
      background: var(--primary);
      color: var(--card);
      transform: translateY(-3px);
    }
    
    .footer-link svg {
      width: 18px;
      height: 18px;
    }
    
    /* Timeline Styles */
    .timeline {
      position: relative;
      padding: 20px 0;
    }
    
    .timeline::before {
      content: '';
      position: absolute;
      top: 0;
      right: 30px;
      height: 100%;
      width: 2px;
      background: var(--border);
    }
    
    .timeline-item {
      position: relative;
      margin-bottom: 30px;
      padding-right: 70px;
    }
    
    .timeline-item::before {
      content: '';
      position: absolute;
      top: 5px;
      right: 21px;
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: var(--primary);
      border: 4px solid var(--card);
      z-index: 1;
    }
    
    .timeline-date {
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 5px;
      font-size: 14px;
    }
    
    .timeline-content {
      font-size: 14px;
    }
    
    .timeline-institution {
      color: var(--muted);
      font-size: 12px;
      margin-top: 3px;
    }
    
    /* Skills Progress Bar */
    .skill {
      margin-bottom: 25px;
    }
    
    .skill-name {
      margin-bottom: 8px;
      font-weight: 600;
      font-size: 14px;
    }
    
    .skill-bar {
      height: 10px;
      background: var(--border);
      border-radius: 5px;
      overflow: hidden;
    }
    
    .skill-progress {
      height: 100%;
      background: var(--primary);
      border-radius: 5px;
      transition: width 1s ease;
    }
    
    /* Responsive Styles */
    @media (min-width: 768px) {
      nav ul {
        display: flex !important;
        flex-direction: row;
        position: static;
        background: transparent;
        box-shadow: none;
        padding: 0;
        width: auto;
      }
      
      .menu-toggle {
        display: none;
      }
      
      nav a {
        padding: 5px 15px;
      }
    }
    
    /* Mobile Responsive - Updated for hero section */
    @media (max-width: 767px) {
      .hero {
        flex-direction: column;
        padding: 40px 0;
        gap: 20px;
      }
      
      .hero-content {
        order: 2;
        margin-top: 20px;
      }
      
      .hero-image-container {
        order: 1;
      }
      
      .hero img {
        width: 300px;
      }
      
      .hero-welcome {
        font-size: 18px;
      }
      
      .hero-content h1 {
        font-size: 26px;
      }
      
      .hero-content p {
        font-size: 14px;
      }
      
      .footer-links {
        flex-direction: column;
        gap: 10px;
      }
    }
    
    /* Animation */
    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(20px); }
      to { opacity: 1; transform: translateY(0); }
    }
    
    .fade-in {
      animation: fadeIn 0.8s ease forwards;
    }
    
    /* Contact Form */
    .contact-form {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    
    .form-group {
      display: flex;
      flex-direction: column;
    }
    
    .form-group label {
      margin-bottom: 8px;
      font-weight: 600;
      font-size: 14px;
    }
    
    .form-group input,
    .form-group textarea {
      padding: 12px;
      border: 1px solid var(--border);
      border-radius: 8px;
      font-family: 'Cairo', sans-serif;
      font-size: 14px;
      transition: var(--transition);
    }
    
    .form-group input:focus,
    .form-group textarea:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 0 3px rgba(44, 82, 130, 0.2);
    }
    
    .form-group textarea {
      min-height: 150px;
      resize: vertical;
    }
    
    /* Form submission messages */
    .form-message {
      padding: 15px;
      margin-top: 20px;
      border-radius: 8px;
      text-align: center;
      font-weight: 600;
    }
    
    .form-message.success {
      background-color: #d4edda;
      color: #155724;
    }
    
    .form-message.error {
      background-color: #f8d7da;
      color: #721c24;
    }
    
    /* Awards Styles */
    .awards-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 25px;
    }
    
    .award-card {
      background: var(--card);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow);
      transition: var(--transition);
      border-top: 4px solid var(--primary);
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    
    .award-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
    }
    
    .award-year {
      background: var(--primary);
      color: var(--card);
      padding: 10px 15px;
      font-weight: 700;
      font-size: 16px;
      text-align: center;
    }
    
    .award-content {
      padding: 20px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    
    .award-title {
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text);
    }
    
    .award-description {
      color: var(--muted);
      margin-bottom: 15px;
      font-size: 12px;
      flex-grow: 1;
    }
    
    .award-app {
      font-weight: 600;
      color: var(--primary);
      font-size: 13px;
      margin-top: auto;
    }
    
    .award-category {
      display: inline-block;
      background: rgba(44, 82, 130, 0.1);
      color: var(--primary);
      padding: 4px 10px;
      border-radius: 20px;
      font-size: 11px;
      margin-top: 10px;
    }
    
    /* Services Section Styles */
    .services-intro {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 20px;
      font-size: 14px;
      color: var(--muted);
    }
    
    .services-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
      gap: 30px;
    }
    
    .service-card {
      background: var(--card);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow);
      transition: var(--transition);
      height: 100%;
      display: flex;
      flex-direction: column;
      position: relative;
    }
    
    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
    }
    
    .service-icon {
      height: 100px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--card);
      font-size: 36px;
    }
    
    .service-content {
      padding: 25px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    
    .service-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 15px;
      color: var(--text);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    
    .service-title .english {
      font-size: 14px;
      color: var(--muted);
      font-weight: normal;
    }
    
    .service-description {
      color: var(--muted);
      margin-bottom: 20px;
      font-size: 13px;
      line-height: 1.6;
      flex-grow: 1;
    }
    
    .service-features {
      margin-bottom: 20px;
    }
    
    .service-feature {
      display: flex;
      align-items: center;
      margin-bottom: 10px;
      font-size: 13px;
    }
    
    .service-feature i {
      color: var(--primary);
      margin-left: 10px;
      font-size: 14px;
    }
    
    .service-link {
      margin-top: auto;
      display: inline-flex;
      align-items: center;
      color: var(--primary);
      font-weight: 600;
      text-decoration: none;
      font-size: 13px;
      transition: var(--transition);
    }
    
    .service-link:hover {
      color: var(--primary-dark);
    }
    
    .service-link i {
      margin-right: 5px;
      transition: var(--transition);
    }
    
    .service-link:hover i {
      transform: translateX(-3px);
    }
    
    .service-badge {
      position: absolute;
      top: 15px;
      left: 15px;
      background: rgba(255, 255, 255, 0.9);
      color: var(--primary);
      padding: 5px 10px;
      border-radius: 20px;
      font-size: 11px;
      font-weight: 600;
    }
    
    /* Projects Section Styles - Updated */
    .projects-container {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
    }
    
    .project-section {
      background: var(--card);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      padding: 25px;
      transition: var(--transition);
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    
    .project-section:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
    }
    
    .project-header {
      display: flex;
      align-items: center;
      margin-bottom: 20px;
      border-bottom: 1px solid var(--border);
      padding-bottom: 15px;
    }
    
    .project-icon {
      width: 50px;
      height: 50px;
      background: var(--primary);
      color: var(--card);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-left: 15px;
    }
    
    .project-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text);
    }
    
    .project-list {
      list-style: none;
      padding: 0;
      margin: 0;
      flex-grow: 1;
    }
    
    .project-item {
      margin-bottom: 15px;
      padding-right: 15px;
      position: relative;
      transition: var(--transition);
      display: flex;
      align-items: center;
    }
    
    .project-item:hover {
      transform: translateX(5px);
    }
    
    .project-item::before {
      content: '•';
      position: absolute;
      right: 0;
      color: var(--primary);
      font-weight: bold;
      font-size: 18px;
    }
    
    .project-thumbnail {
      width: 60px;
      height: 60px;
      border-radius: 8px;
      object-fit: cover;
      margin-left: 15px;
      border: 1px solid var(--border);
    }
    
    .project-content {
      flex: 1;
    }
    
    .project-name {
      font-weight: 600;
      font-size: 14px;
      margin-bottom: 5px;
      color: var(--text);
    }

    .project-name-icon {
      color: var(--primary);
      font-size: 0.85em;
      margin-left: 0.4em;
      vertical-align: baseline;
    }
    
    .project-description {
      font-size: 12px;
      color: var(--muted);
      margin-bottom: 5px;
    }
    
    .project-link {
      color: var(--primary);
      font-size: 12px;
      text-decoration: none;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      transition: var(--transition);
    }
    
    .project-link:hover {
      color: var(--primary-dark);
    }
    
    .project-link i {
      margin-right: 5px;
      font-size: 10px;
    }
    
    /* Projects Section Button */
    .projects-section-btn {
      text-align: center;
      margin-top: 20px;
    }
    
    .projects-section-btn .btn {
      font-size: 14px;
      padding: 14px 28px;
      background: var(--primary);
      color: var(--card);
      border-radius: 12px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    
    .projects-section-btn .btn i {
      font-size: 16px;
    }
    
    .projects-section-btn .btn:hover {
      background: var(--primary-dark);
      transform: translateY(-3px);
      box-shadow: 0 5px 15px rgba(44, 82, 130, 0.3);
    }
    
    /* Experience Category Styles */
    .experience-category {
      margin-bottom: 12px;
      padding-bottom: 8px;
      border-bottom: 1px dashed var(--border);
    }
    
    .experience-category:last-child {
      border-bottom: none;
    }
    
    .category-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    
    .category-title i {
      font-size: 18px;
    }
    
    .experience-item {
      margin-bottom: 6px;
      padding-right: 20px;
      position: relative;
    }
    
    .experience-item::before {
      content: '•';
      position: absolute;
      right: 0;
      color: var(--primary);
      font-weight: bold;
      font-size: 18px;
    }
    
    .experience-title {
      font-weight: 600;
      margin-bottom: 3px;
    }
    
    .experience-period {
      color: var(--muted);
      font-size: 12px;
      font-style: italic;
    }
    
    .sub-item {
      margin-right: 20px;
      margin-top: 3px;
      margin-bottom: 3px;
      font-size: 13px;
      color: var(--muted);
    }
    
    /* Back to top button */
    .back-to-top {
      position: fixed;
      bottom: 20px;
      right: 20px;
      width: 50px;
      height: 50px;
      background: var(--primary);
      color: var(--card);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      opacity: 0;
      visibility: hidden;
      transition: var(--transition);
      z-index: 1000;
    }
    
    .back-to-top.show {
      opacity: 1;
      visibility: visible;
    }
    
    .back-to-top:hover {
      background: var(--primary-dark);
      transform: translateY(-5px);
    }
    
    /* Additional Image Section - Updated with 30% smaller size */
    .additional-image {
      text-align: center;
      margin: 40px 0;
    }
    
    .additional-image img {
      max-width: 70%;
      height: auto;
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      transition: var(--transition);
    }
    
    .additional-image img:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
    }