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

    :root {
      --primary-color: #2c3e50;
      --secondary-color: #3498db;
      --accent-color: #e74c3c;
      --success-color: #27ae60;
      --warning-color: #f39c12;
      --text-color: #333;
      --bg-color: #fff;
      --card-bg: #f8f9fa;
      --border-color: #e9ecef;
      --shadow: 0 2px 10px rgba(0,0,0,0.1);
      --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
      --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
      --gradient-tertiary: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
      --gradient-success: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    }

    body {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      line-height: 1.6;
      color: var(--text-color);
      min-height: 100vh;
      transition: all 0.3s ease;
      margin-bottom: 7rem;
    }

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

    /* Header */
    .hero {
      background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
      color: white;
      padding: 4rem 0;
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .hero::before {
      content: '';
      position: absolute;
      top: -50%;
      left: -50%;
      width: 200%;
      height: 200%;
      background: linear-gradient(30deg, transparent, rgba(255,255,255,0.1), transparent);
      transform: rotate(30deg);
      animation: shine 8s ease-in-out infinite;
    }

    @keyframes shine {
      0%, 100% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
      50% { transform: translateX(100%) translateY(100%) rotate(45deg); }
    }

    .hero-content {
      position: relative;
      z-index: 2;
    }

    .hero-image i {
      font-size: 4rem;
      opacity: 0.9;
      animation: float 3s ease-in-out infinite;
    }

    @keyframes float {
      0%, 100% { transform: translateY(0px); }
      50% { transform: translateY(-10px); }
    }

    .hero h1 {
      font-size: 2rem;
      text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
      animation: fadeInUp 1s ease-out;
    }

    .hero p {
      font-size: 1.2rem;
      opacity: 0.9;
      max-width: 600px;
      margin: 0 auto;
      
      animation: fadeInUp 1s ease-out 0.3s backwards;
    }

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

    /* Navigation */
    nav {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      padding: 1rem 0;
      box-shadow: 0 4px 20px rgba(0,0,0,0.1);
      position: sticky;
      top: 0;
      z-index: 100;
    }

    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
    }

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

    .nav-links a {
      color: var(--text-color);
      text-decoration: none;
      font-weight: 500;
      padding: 0.5rem 1rem;
      border-radius: 25px;
      transition: all 0.3s ease;
      position: relative;
    }

    .nav-links a:hover, .nav-links a.active {
      background: var(--secondary-color);
      color: white;
      transform: translateY(-2px);
    }

    .nav-controls {
      display: flex;
      gap: 1rem;
    }

    
    .btn:hover {
      background: var(--primary-color);
      transform: translateY(-2px);
    }

    /* Main Content */
    main {
      background: var(--bg-color);
      min-height: 100vh;
     
    }

    .section {
      margin-bottom: 4rem;
      animation: fadeInUp 0.8s ease-out;
    }

    .section h2 {
      font-size: 2.5rem;
      margin-bottom: 3rem;
      text-align: center;
      position: relative;
      color: var(--primary-color);
      text-decoration: none;
    }

    .section h2::after {
      content: '';
      position: absolute;
      bottom: -10px;
      left: 50%;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background: var(--gradient-primary);
      border-radius: 2px;
    }

    /* Timeline */
    .timeline {
      position: relative;
      max-width: 900px;
      margin: 0 auto;
      
    }

    .timeline::before {
      content: '';
      position: absolute;
      left: 50%;
      top: 0;
      bottom: 0;
      width: 4px;
      background: var(--gradient-primary);
      transform: translateX(-50%);
      border-radius: 2px;
      
    }

    .timeline-item {
      position: relative;
      margin-bottom: 3rem;
      width: 100%;
      
    }

    .timeline-item:nth-child(odd) .timeline-content {
      margin-left: 0;
      margin-right: calc(50% + 30px);
      text-align: right;
    }

    .timeline-item:nth-child(even) .timeline-content {
      margin-left: calc(50% + 30px);
      margin-right: 0;
      text-align: left;
    }

    .timeline-content {
      background: white;
      border-radius: 20px;
      padding: 2rem;
      box-shadow: 0 10px 30px rgba(0,0,0,0.1);
      transition: all 0.3s ease;
      position: relative;
      
    }

    .timeline-content:hover {
      transform: translateY(-10px);
      box-shadow: 0 20px 40px rgba(0,0,0,0.15);
    }

    .timeline-item:nth-child(odd) .timeline-content::before {
      content: '';
      position: absolute;
      right: -15px;
      top: 30px;
      width: 0;
      height: 0;
      border: 15px solid transparent;
      border-left-color: white;
    }

    .timeline-item:nth-child(even) .timeline-content::before {
      content: '';
      position: absolute;
      left: -15px;
      top: 30px;
      width: 0;
      height: 0;
      border: 15px solid transparent;
      border-right-color: white;
    }

    .timeline-dot {
      position: absolute;
      left: 50%;
      top: 30px;
      width: 20px;
      height: 20px;
      background: white;
      border: 4px solid var(--secondary-color);
      border-radius: 50%;
      transform: translateX(-50%);
      z-index: 2;
      transition: all 0.3s ease;
    }

    .timeline-item:hover .timeline-dot {
      background: var(--secondary-color);
      transform: translateX(-50%) scale(1.2);
    }

    .job-header {
      display: flex;
      align-items: center;
      gap: 1rem;
      margin-bottom: 1rem;
      flex-wrap: wrap;
    }

    .job-icon {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      color: white;
      flex-shrink: 0;
    }

    .job-icon.education {
      background: var(--gradient-primary);
    }

    .job-icon.research {
      background: var(--gradient-secondary);
    }

    .job-icon.training {
      background: var(--gradient-tertiary);
    }

    .job-icon.volunteer {
      background: var(--gradient-success);
    }

    .job-details h3 {
      color: var(--primary-color);
      font-size: 1.4rem;
      margin-bottom: 0.5rem;
    }

    .job-company {
      color: var(--secondary-color);
      font-weight: 600;
      margin-bottom: 0.3rem;
    }

    .job-period {
      color: #666;
      font-size: 0.9rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }

    .job-description {
      margin-top: 1rem;
      color: #555;
      line-height: 1.6;
    }

    .job-highlights {
      margin-top: 1rem;
      display: flex;
      flex-wrap: wrap;
      gap: 0.5rem;
    }

    .highlight-tag {
      background: var(--gradient-primary);
      color: white;
      padding: 0.3rem 0.8rem;
      border-radius: 15px;
      font-size: 0.8rem;
      font-weight: 500;
    }

    /* Volunteer Section */
    .volunteer-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
      gap: 2rem;
      max-width: 900px;
      margin: 0 auto;
    }

    .section.volunteer-section {
  margin-bottom: 200px;
}


    .volunteer-card {
      background: white;
      border-radius: 20px;
      padding: 4rem;
      box-shadow: 0 10px 30px rgba(0,0,0,0.1);
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }

    .volunteer-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: var(--gradient-success);
    }

    .volunteer-card:hover {
      transform: translateY(-10px);
      box-shadow: 0 20px 40px rgba(0,0,0,0.15);
    }

    .volunteer-header {
      display: flex;
      align-items: center;
      gap: 1rem;
      margin-bottom: 1.5rem;
    }

    .volunteer-icon {
      width: 60px;
      height: 60px;
      border-radius: 50%;
      background: var(--gradient-success);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      color: white;
    }

    .volunteer-title h3 {
      color: var(--primary-color);
      font-size: 1.3rem;
      margin-bottom: 0.3rem;
    }

    .volunteer-org {
      color: var(--success-color);
      font-weight: 600;
    }

    .volunteer-description {
      color: #555;
      line-height: 1.6;
    }

    .volunteer-activities {
      margin-top: 1rem;
      padding-top: 1rem;
      border-top: 1px solid var(--border-color);
    }

    .activity-item {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      margin-bottom: 0.5rem;
      color: #666;
    }

    .activity-item i {
      color: var(--success-color);
      font-size: 0.8rem;
    }

    /* Years Badge */
    .years-badge {
      position: absolute;
      top: 1rem;
      right: 1rem;
      background: var(--gradient-primary);
      color: white;
      padding: 0.3rem 0.8rem;
      border-radius: 15px;
      font-size: 0.8rem;
      font-weight: 600;
    }

    /* Stats Section */
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 2rem;
      margin: 3rem 0;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .stat-card {
      background: white;
      border-radius: 15px;
      padding: 2rem;
      text-align: center;
      box-shadow: 0 8px 25px rgba(0,0,0,0.1);
      transition: all 0.3s ease;
    }

    .stat-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 15px 35px rgba(0,0,0,0.15);
    }

    .stat-icon {
      font-size: 2.5rem;
      margin-bottom: 1rem;
      background: var(--gradient-primary);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .stat-number {
      font-size: 2rem;
      font-weight: bold;
      color: var(--primary-color);
      margin-bottom: 0.5rem;
    }

    .stat-label {
      color: #666;
      font-size: 0.9rem;
    }

    /* Responsive */
    @media (max-width: 768px) {
      .hero h1 {
        font-size: 2rem;
      }

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

      .nav-container {
        justify-content: center;
        flex-direction: column;
      }

      .nav-links {
        gap: 1rem;
        justify-content: center;
      }

      .timeline::before {
        left: 30px;
      }

      .timeline-item:nth-child(odd) .timeline-content,
      .timeline-item:nth-child(even) .timeline-content {
        margin-left: 60px;
        margin-right: 0;
        text-align: left;
      }

      .timeline-item:nth-child(odd) .timeline-content::before,
      .timeline-item:nth-child(even) .timeline-content::before {
        left: -15px;
        border: 15px solid transparent;
        border-right-color: white;
        border-left-color: transparent;
      }

      .timeline-dot {
        left: 30px;
      }

      .job-header {
        justify-content: flex-start;
      }

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

      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    /* Scroll animations */
    .fade-in {
      opacity: 0;
      transform: translateY(30px);
      transition: all 0.6s ease;
    }

    .fade-in.visible {
      opacity: 1;
      transform: translateY(0);
    }