:root {
            --primary-color: #0d1117;
            --secondary-color: #161b22;
            --accent-color: #58a6ff;
            --text-color: #c9d1d9;
            --border-color: #30363d;
            --card-bg: #21262d;
            --hover-color: #2c333a;
            --alt-bg: #0d1117;
            --main-bg: #161b22;
            --color-header-bg: #161b22;
            --color-text-primary: #c9d1d9;
            --color-border-primary: #30363d;
            --color-accent-emphasis: #1f6feb;
            --color-bg-primary: #161b22;
            --color-header-text: #f0f6fc;
            --color-text-secondary: #8b949e;
            --color-accent-primary: #58a6ff;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif;
        }

        body {
            line-height: 1.6;
            color: var(--text-color);
            background-color: var(--primary-color);
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header Styles */
        header {
            background-color: var(--secondary-color);
            padding: 20px 0;
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
        }

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

        .logo {
            font-size: 24px;
            font-weight: 700;
            color: var(--accent-color);
            text-decoration: none;
        }

        .menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-color);
            cursor: pointer;
        }

        .nav-menu {
            display: flex;
            list-style: none;
        }

        .nav-menu li {
            margin-left: 30px;
        }

        .nav-menu a {
            color: var(--text-color);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
        }

        .nav-menu a:hover {
            color: var(--accent-color);
        }
        
        .nav-menu a.active {
            color: var(--accent-color);
        }
        /* Page Header */
        .page-header {
            padding: 140px 0 80px;
            text-align: center;
            background: linear-gradient(135deg, var(--main-bg), var(--primary-color));
            border-bottom: 1px solid var(--border-color);
        }

        .page-header h1 {
            font-size: 3.5rem;
            margin-bottom: 1rem;
            color: var(--color-header-text);
            background: linear-gradient(135deg, var(--accent-color), #4193e0);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .page-header p {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto;
            color: var(--color-text-secondary);
        }

        /* Section Styles */
        .section {
            padding: 80px 0;
            border-bottom: 1px solid var(--color-border-primary);
        }

        .section:nth-child(even) {
            background-color: var(--alt-bg);
        }

        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-icon {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 2.5rem;
            transition: all 0.3s ease;
        }

        .section-title {
            font-size: 2.5rem;
            margin-bottom: 15px;
            color: var(--color-header-text);
        }

        .section-description {
            font-size: 1.1rem;
            color: var(--color-text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }

        /* Python Section */
        .python-section .section-icon {
            background: linear-gradient(135deg, #306998, #ffd43b);
            color: white;
        }

        .python-section .section-icon:hover {
            transform: rotate(10deg) scale(1.1);
        }

        /* SQL Section */
        .sql-section .section-icon {
            background: linear-gradient(135deg, #00758f, #336791);
            color: white;
        }

        .sql-section .section-icon:hover {
            transform: rotate(-10deg) scale(1.1);
        }

        /* Power BI Section */
        .powerbi-section .section-icon {
            background: linear-gradient(135deg, #f2c811, #ffb900);
            color: #333;
        }

        .powerbi-section .section-icon:hover {
            transform: scale(1.1);
            box-shadow: 0 10px 20px rgba(242, 200, 17, 0.3);
        }

        /* Web Development Section */
        .web-section .section-icon {
            background: linear-gradient(135deg, #e34c26, #f06529);
            color: white;
        }

        .web-section .section-icon:hover {
            transform: rotate(10deg) scale(1.1);
        }

        /* Projects Grid */
        .projects-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }

        .project-card {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
            position: relative;
        }

        .project-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
            border-color: var(--accent-color);
        }

        .project-image {
            height: 200px;
            background: linear-gradient(135deg, rgba(88, 166, 255, 0.1), rgba(31, 111, 235, 0.1));
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }

        .project-image::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(circle at center, transparent, rgba(13, 17, 23, 0.3));
        }

        .project-image i {
            font-size: 4rem;
            color: var(--accent-color);
            z-index: 1;
            transition: all 0.3s ease;
        }

        .project-card:hover .project-image i {
            transform: scale(1.2);
        }

        .project-content {
            padding: 25px;
        }

        .project-category {
            display: inline-block;
            background: rgba(88, 166, 255, 0.1);
            color: var(--accent-color);
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            margin-bottom: 15px;
            border: 1px solid rgba(88, 166, 255, 0.2);
        }

        .project-title {
            font-size: 1.4rem;
            font-weight: 600;
            color: var(--color-header-text);
            margin-bottom: 15px;
            line-height: 1.3;
        }

        .project-description {
            color: var(--color-text-secondary);
            margin-bottom: 20px;
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .project-technologies {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 20px;
        }

        .tech-tag {
            background: rgba(88, 166, 255, 0.1);
            color: var(--accent-color);
            padding: 4px 10px;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 500;
            border: 1px solid rgba(88, 166, 255, 0.2);
        }

        .project-links {
            display: flex;
            gap: 15px;
        }

        .project-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--accent-color);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.9rem;
            transition: all 0.3s ease;
            padding: 8px 15px;
            border: 1px solid var(--accent-color);
            border-radius: 6px;
        }

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

        /* Statistics Section */
        .stats-section {
            background: linear-gradient(135deg, var(--card-bg), var(--secondary-color));
            padding: 60px 0;
            margin: 80px 0;
            border-radius: 20px;
            border: 1px solid var(--border-color);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            text-align: center;
        }

        .stat-item {
            padding: 20px;
        }

        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--accent-color);
            margin-bottom: 10px;
        }

        .stat-label {
            font-size: 1.1rem;
            color: var(--color-text-secondary);
            text-transform: uppercase;
            font-weight: 500;
        }

         /*Logo*/
        .logo-img {
            height: 40px;
            width: auto;
            transition: all 0.3s ease;
            }

        .logo-img:hover {
             transform: scale(1.05);
            opacity: 0.9;
            }

        .logo {
                display: flex;
                align-items: center;
            }


        /* Footer */
        footer {
            background: linear-gradient(to bottom, var(--color-bg-primary), #10141b);
            padding: 60px 0 40px;
            border-top: 1px solid rgba(88, 166, 255, 0.2);
        }

        .footer-content {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 20px;
        }

        .footer-logo {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-header-text);
        }

        .footer-social {
            display: flex;
            gap: 15px;
        }

        .footer-social a {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: rgba(88, 166, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
            text-decoration: none;
        }

        .footer-social a:hover {
            background-color: var(--accent-color);
            transform: translateY(-5px);
        }

        .footer-social a i {
            color: var(--accent-color);
            font-size: 1.2rem;
        }

        .footer-social a:hover i {
            color: var(--primary-color);
        }

        .footer-text {
            color: var(--color-text-secondary);
            font-size: 0.9rem;
            text-align: center;
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .menu-btn {
                display: block;
            }

            .nav-menu {
                position: fixed;
                top: 70px;
                left: -100%;
                flex-direction: column;
                background-color: var(--secondary-color);
                width: 100%;
                padding: 20px;
                transition: 0.5s;
                box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
            }

            .nav-menu.active {
                left: 0;
            }

            .nav-menu li {
                margin: 15px 0;
            }

            .page-header {
                padding: 120px 0 60px;
            }

            .page-header h1 {
                font-size: 2.5rem;
            }

            .section {
                padding: 60px 0;
            }

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

            .projects-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px;
            }

            .stat-number {
                font-size: 2rem;
            }
        }

        @media (max-width: 480px) {
            .projects-grid {
                grid-template-columns: 1fr;
            }

            .project-links {
                flex-direction: column;
                gap: 10px;
            }

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

/* WhatsApp Button */
.whatsapp-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #25D366, #128C7E);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.3);
    z-index: 1000;
    transition: all 0.3s ease;
    text-decoration: none;
    animation: pulse 2s infinite;
}

.whatsapp-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(37, 211, 102, 0.4);
}

.whatsapp-btn i {
    color: white;
    font-size: 2rem;
}

.whatsapp-tooltip {
    position: absolute;
    right: 70px;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.9rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.whatsapp-tooltip::after {
    content: '';
    position: absolute;
    right: -5px;
    top: 50%;
    transform: translateY(-50%);
    border-left: 5px solid rgba(0, 0, 0, 0.8);
    border-top: 5px solid transparent;
    border-bottom: 5px solid transparent;
}

.whatsapp-btn:hover .whatsapp-tooltip {
    opacity: 1;
    visibility: visible;
}

@keyframes pulse {
    0% {
        box-shadow: 0 4px 20px rgba(37, 211, 102, 0.3);
    }
    50% {
        box-shadow: 0 4px 20px rgba(37, 211, 102, 0.6);
    }
    100% {
        box-shadow: 0 4px 20px rgba(37, 211, 102, 0.3);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .whatsapp-btn {
        width: 50px;
        height: 50px;
        bottom: 15px;
        right: 15px;
    }

    .whatsapp-btn i {
        font-size: 1.5rem;
    }

    .whatsapp-tooltip {
        display: none;
    }
}

@media (max-width: 480px) {
    .whatsapp-btn {
        width: 45px;
        height: 45px;
        bottom: 10px;
        right: 10px;
    }

    .whatsapp-btn i {
        font-size: 1.3rem;
    }

    .whatsapp-tooltip {
        display: none;
    }
}