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

        body {
            font-family: Arial, sans-serif;
            background-color: #2a2a2a;
            color: #fff;
            line-height: 1.7;
            overflow-x: hidden;
        }

        /* Navigation Bar */
        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 30px 40px;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background-color: #2a2a2a;
            z-index: 1000;
        }

        .logo {
            font-size: 1.3rem;
            font-weight: 400;
            font-style: italic;
        }

        .nav-links {
            display: flex;
            gap: 30px;
            list-style: none;
        }

        .nav-links a {
            color: #fff;
            text-decoration: none;
            font-size: 0.95rem;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            border-bottom: 2px solid transparent;
            transition: border-color 0.3s ease;
        }

        .nav-links a:hover,
        .nav-links a.active {
            border-bottom-color: #fff;
        }

        /* Main Content */
        .container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 150px 40px 60px;
            min-height: 100vh;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 80px;
            align-items: start;
        }

        .left-column {
            padding-right: 40px;
        }

        .main-heading {
            font-family: 'Crimson Pro', serif;
            font-size: 3.8rem;
            font-weight: 300;
            line-height: 1.15;
            color: #b8b8b8;
            letter-spacing: -0.5px;
            text-align: left;
        }

        .right-column {
            padding-top: 200px;
            max-width: 600px;
        }

        .tagline {
            font-family: 'Crimson Pro', serif;
            font-size: 2.5rem;
            font-weight: 300;
            
            line-height: 1.3;
        }

        .tagline em{
            font-style: italic;
        }
        .main-heading em {
            font-style: italic;
            color:#fff;
        }

        .divider {
            border: none;
            border-top: 1.5px solid #fff;
          
        }

        .content-text {
            margin-top: 50px;
            font-size: 1.1rem;
            line-height: 1.9;
            color: #d5d5d5;
            margin-bottom: 35px;
            font-weight: 300;
        }

        



        /* Skills Section */
        .skills-section {
            position: relative;
            width: 100%;
            padding: 100px 40px;
            background-image: url('assets/bg-img.jpeg');
            background-size: cover;
            background-position: center;
            margin-top: 100px;
            background-attachment: fixed;

        }

        .skills-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.75);
            
        }

        .skills-content {
            position: relative;
            z-index: 2;
            max-width: 1400px;
            margin: 0 auto;
        }

        .skills-grid {
            display: grid;
            grid-template-columns: 0.8fr 1fr 1.2fr;
            gap: 60px;
            align-items: start;
        }

        .skills-column {
            color: #fff;
        }

        .skills-title {
            font-size: 2.5rem;
            font-weight: 700;
            letter-spacing: 2px;
            line-height: 1.3;
            color: #fff;
        }

        .column-heading {
            font-size: 1.2rem;
            font-weight: 700;
            letter-spacing: 1.5px;
            margin-bottom: 25px;
            color: #fff;
        }

        .two-column-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .skills-list {
            list-style: none;
            padding: 0;
        }

        .skills-list li {
            font-size: 0.95rem;
            margin-bottom: 10px;
            color: #e0e0e0;
            font-weight: 300;
        }


        /* footer section */

          footer {
            background: linear-gradient(135deg, #2d3748 0%, #1a202c 100%);
            position: fixed;
            color: white;
            padding: 50px 20px 20px;
            margin-top: 60px;
            border-radius: 15px 15px 0 0;
            bottom: 30px;
            left: 40px;
            font-size: 0.85rem;
            
        }

        .footer-content {
            max-width: 100%;
            padding: 20px 20px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 40px;
            background: #24292e;

        }
        .footer-section {
            display: flex;
            flex-direction: column;   
            align-items: center;      
        }

        .footer-section h3 {
            color: #ffc107;
            margin-bottom: 15px;
            font-size: 1.3em;
            border-bottom: 2px solid #667eea;
            padding-bottom: 8px;
            display: inline-block;
        }

        .footer-section p {
            color: #e2e8f0;
            line-height: 1.8;
            margin: 0;
            text-align: center;

        }

        .contact-info {
            font-size: 0.95em;
        }

        .social-links {
            display: flex;
            gap: 15px;
            margin-top: 15px;
            flex-wrap: wrap;
        }

        .social-btn {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            color: white;
        }

        .social-btn.github {
            background: #333;
        }

        .social-btn.github:hover {
            background: #24292e;
            transform: translateY(-3px);
            box-shadow: 0 5px 20px rgba(0,0,0,0.4);
        }

        .social-btn.linkedin {
            background: #0077b5;
        }

        .social-btn.linkedin:hover {
            background: #006399;
            transform: translateY(-3px);
            box-shadow: 0 5px 20px rgba(0,119,181,0.4);
        }

        .social-btn svg {
            width: 20px;
            height: 20px;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #cbd5e0;
        }

        .footer-bottom p {
            margin: 0;
            font-size: 0.95em;
        }



        /* Responsive Design */
        @media (max-width: 1024px) {
            .container {
                grid-template-columns: 1fr;
                gap: 60px;
                padding: 120px 40px 60px;
            }

            .main-heading {
                font-size: 2.8rem;
            }

            .left-column {
                padding-right: 0;
            }

            .right-column {
                padding-top: 80px;
                max-width: 100%;
            }

            .tagline {
                font-size: 2rem;
            }
        }

        @media (max-width: 768px) {
            nav {
                padding: 25px 25px;
            }

            .logo {
                font-size: 1.1rem;
            }

            .nav-links {
                gap: 20px;
            }

            .nav-links a {
                font-size: 0.85rem;
            }

            .container {
                padding: 100px 25px 60px;
                gap: 40px;
            }

            .main-heading {
                font-size: 2.2rem;
            }

            .tagline {
                font-size: 1.6rem;
            }

            .content-text {
                font-size: 1rem;
            }

            footer {
                left: 25px;
                bottom: 25px;
            }
        }




        /* education section */
        .process-section {
            background-color: #2a2a2a;
            padding: 100px 40px;
        }

        .process-container {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 100px;
            align-items: start;
        }

        .process-left {
            color: #fff;
        }

        .process-title {
            font-size: 2.5rem;
            font-weight: 700;
            letter-spacing: 2px;
            margin-bottom: 30px;
            color: #fff;
        }

        .process-intro {
            font-size: 1rem;
            line-height: 1.8;
            color: #d5d5d5;
            font-weight: 300;
        }

        .process-right {
            display: grid;
            grid-template-rows: 1fr 1fr;
            gap: 60px 40px;
        }

        .process-step {
            position: relative;
            align-items: start;
        }

        .step-number {
            font-size: 3rem;
            font-weight: 700;
            color: #404040;
            line-height: 1;
            flex-shrink: 0;
        }

        .step-content {
            padding-top: 10px;
        }

        .step-title {
            font-size: 1.5rem;
            font-weight: 700;
            letter-spacing: 1.5px;
            margin-bottom: 15px;
            color: #fff;
            z-index: 3;
        }

        .step-description {
            font-size: 0.95rem;
            line-height: 1.7;
            color: #d5d5d5;
            font-weight: 300;
        }

        /* Responsive for Process Section */
        @media (max-width: 1024px) {
            .process-container {
                grid-template-columns: 1fr;
                gap: 60px;
            }

            .process-right {
                grid-template-columns: 1fr;
                gap: 50px;
            }
        }

        @media (max-width: 768px) {
            .process-section {
                padding: 60px 25px;
            }

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

            .step-number {
                font-size: 4rem;
            }
        }





/* Visualizations Section */

.visualizations {
    background-color: #1a1a1a;
    padding: 100px 40px;
    min-height: 100vh;
}

#vis1 {
      max-width: 80%;
      height: auto;
      margin: 10px auto;
      background: rgb(42, 42, 42);
      padding: 40px;
      border-radius: 8px;
    }


h1 {
      text-align: center;
      color: #d3d3d3;
      margin-bottom: 8px;
      font-size: 28px;
      font-weight: 600;
    }
    .subtitle {
      text-align: center;
      color: #f5f5f5;
      margin-bottom: 30px;
      font-size: 20px;
    }
    #mapContainer {
      width: 100%;
      margin: 30px 0;
    }
    #mapContainer svg {
      width: 100%;
      height: auto;
      display: block;
    }
    .controls {
      text-align: center;
      margin: 30px 0;
    }
    .year-btn {
      margin: 0 8px;
      padding: 10px 24px;
      font-size: 15px;
      font-weight: 500;
      border: 2px solid #ddd;
      background: white;
      color: #333;
      cursor: pointer;
      border-radius: 6px;
      transition: all 0.2s;
    }
    .year-btn:hover {
      border-color: #999;
      background: #f8f8f8;
    }
    .year-btn.active {
      background: #d32f2f;
      color: white;
      border-color: #d32f2f;
    }
    #tooltip {
      position: fixed;
      background: rgba(0, 0, 0, 0.85);
      color: white;
      padding: 10px 14px;
      border-radius: 4px;
      pointer-events: none;
      opacity: 0;
      transition: opacity 0.2s;
      font-size: 13px;
      z-index: 10000;
    }
    #tooltip.visible {
      opacity: 1;
    }
    #tooltip .country-name {
      font-weight: 600;
      font-size: 14px;
      margin-bottom: 4px;
    }
    #tooltip .billionaire-count {
      color: #ffeb3b;
      font-weight: 600;
    }
    .legend {
      text-align: center;
      margin-top: 30px;
    }
    .legend-title {
      font-weight: 500;
      margin-bottom: 12px;
      color: #b8b8b8;
      font-size: 18px;
    }
    .legend-gradient {
      display: inline-block;
      width: 300px;
      height: 20px;
      background: linear-gradient(to right, #fff5f0, #fb6a4a, #a50f15);
      border: 1px solid #ddd;
      border-radius: 3px;
    }
    .legend-labels {
      display: flex;
      justify-content: space-between;
      width: 300px;
      margin: 6px auto 0;
      font-size: 12px;
      color: #666;
    }
    path {
      cursor: pointer;
    }

    .art-item{
        margin-top: 50px;
        text-align: center;
        color: #f5f5f5;
        font-size: 14px;
        font-weight: 300;
    }