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

        :root {
            --primary: #2563eb;
            --primary-dark: #1e40af;
            --secondary: #7c3aed;
            --accent: #06b6d4;
            --dark: #0f172a;
            --light: #f8fafc;
            --gray: #64748b;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            color: var(--dark);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* Navbar */
        .navbar {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            padding: 1rem 0;
            z-index: 1000;
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
            transition: all 0.3s;
        }

        .navbar.scrolled {
            padding: 0.5rem 0;
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
        }

        .nav-container {
            max-width: 1216px;
            margin: 0 auto;
            padding: 0 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: bold;
            color: var(--primary);
        }

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

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

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width 0.3s;
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 5px;
        }

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background: var(--dark);
            transition: all 0.3s;
        }

        /* Hero Slider */
        .hero-slider {
            margin-top: 70px;
            position: relative;
            height: 100vh;
            overflow: hidden;
        }

        .slide {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            opacity: 0;
            transition: opacity 1s ease-in-out;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .slide.active {
            opacity: 1;
        }

        .slide-1 {
            background: linear-gradient(135deg, #667eea80 0%, #764ba280 100%), 
            url("Images/Slider/slider_image_1.jpeg");
            background-size: cover;
            background-position: center;
        }

        .slide-2 {
            background: linear-gradient(135deg, #f093fb80 0%, #f5576c80 100%), 
                url("Images/Slider/slider_image_2.jpeg");
            background-size: cover;
            background-position: center;
        }

        .slide-3 {
            background: linear-gradient(135deg, #4facfe80 0%, #00f2fe80 100%), 
                url("Images/Slider/slider_image_3.jpg");
            background-size: cover;
            background-position: center;
        }

        .slide-content {
            max-width: 1200px;
            padding: 0 2rem;
            color: white;
            text-align: center;
        }

        .slide-content h1 {
            font-size: 4rem;
            margin-bottom: 1rem;
            animation: slideUp 1s ease-out;
        }

        .slide-content p {
            font-size: 1.5rem;
            margin-bottom: 2rem;
            animation: slideUp 1s ease-out 0.2s both;
        }

        .slide-content .btn {
            background: white;
            color: var(--primary);
            padding: 1rem 2.5rem;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            display: inline-block;
            transition: all 0.3s;
            animation: slideUp 1s ease-out 0.4s both;
        }

        .slide-content .btn:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
        }

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

        .slider-nav {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 15px;
            z-index: 10;
        }

        .slider-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.5);
            cursor: pointer;
            transition: all 0.3s;
        }

        .slider-dot.active {
            background: white;
            width: 40px;
            border-radius: 6px;
        }

        /* About Section */
        .about {
            padding: 100px 2rem;
            background: white;
        }

        .container {
            max-width: 1216px;
            margin: 0 auto;
        }

        .section-title {
            text-align: center;
            margin-bottom: 4rem;
        }

        .section-title h2 {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            color: var(--primary);
        }

        .section-title p {
            color: var(--gray);
            font-size: 1.1rem;
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 4rem;
            align-items: start;
        }

        .profile-card {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 20px;
            padding: 2rem;
            color: white;
            text-align: center;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
        }

        .profile-img {
            width: 150px;
            height: 150px;
            border-radius: 50%;
            background: white;
            margin: 0 auto 1.5rem;
            display: block;
            object-fit: cover;
        }

        .profile-card h3 {
            font-size: 1.8rem;
            margin-bottom: 0.5rem;
        }

        .profile-card .role {
            font-size: 1.2rem;
            opacity: 0.9;
            margin-bottom: 1.5rem;
        }

        .personal-info {
            text-align: left;
            margin-top: 2rem;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.2);
        }

        .personal-info p {
            margin: 0.5rem 0;
            font-size: 0.9rem;
            word-break: break-word;
        }

        .about-details h3 {
            font-size: 2rem;
            margin-bottom: 1rem;
            color: var(--dark);
        }

        .about-details p {
            color: var(--gray);
            margin-bottom: 1rem;
            font-size: 1.1rem;
        }

        /* Gallery Section */
        .gallery {
            padding: 100px 2rem;
            background: var(--light);
        }

        .gallery-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
        }

        .gallery-item {
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 15px 50px rgba(0, 0, 0, 0.1);
            transition: all 0.4s ease;
            position: relative;
            aspect-ratio: 1;
        }

        .gallery-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.6) 100%);
            opacity: 0;
            transition: opacity 0.4s ease;
            z-index: 1;
        }

        .gallery-item:hover::before {
            opacity: 1;
        }

        .gallery-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .gallery-item:hover {
            transform: scale(1.05);
            box-shadow: 0 25px 70px rgba(0, 0, 0, 0.2);
        }

        .gallery-item:hover img {
            transform: scale(1.2);
        }

        /* Experience Section */
        .experience {
            padding: 100px 2rem;
            background: var(--light);
        }

        .experience-item {
            background: white;
            padding: 2.5rem;
            border-radius: 20px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            margin-bottom: 2rem;
            border-left: 5px solid var(--primary);
        }

        .experience-header {
            display: flex;
            justify-content: space-between;
            align-items: start;
            margin-bottom: 1.5rem;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .experience-header h3 {
            font-size: 1.8rem;
            color: var(--primary);
        }

        .experience-date {
            background: var(--primary);
            color: white;
            padding: 0.5rem 1rem;
            border-radius: 20px;
            font-size: 0.9rem;
        }

        .experience-role {
            font-size: 1.2rem;
            color: var(--secondary);
            margin-bottom: 1rem;
            font-weight: 600;
        }

        .experience-item ul {
            list-style: none;
            margin-left: 0;
        }

        .experience-item ul li {
            padding: 0.5rem 0;
            padding-left: 1.5rem;
            position: relative;
            color: var(--gray);
        }

        .experience-item ul li::before {
            content: '▹';
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: bold;
        }

        .tech-stack {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            margin-top: 1.5rem;
        }

        .tech-tag {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 0.5rem 1rem;
            border-radius: 20px;
            font-size: 0.875rem;
            font-weight: 500;
        }

        /* Skills Section */
        .skills {
            padding: 100px 2rem;
            background: white;
        }

        .skills-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(176px, 1fr));
            gap: 2rem;
        }

        .skill-card {
            background: white;
            padding: 2.5rem;
            border-radius: 25px;
            text-align: center;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            cursor: pointer;
            border: 2px solid #1376da;
            position: relative;
            overflow: hidden;
        }

        .skill-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            opacity: 0;
            transition: opacity 0.4s ease;
            z-index: 0;
        }

        .skill-card:hover::before {
            opacity: 1;
        }

        .skill-card:hover {
            transform: translateY(-12px) scale(1.05);
            box-shadow: 0 25px 60px rgba(99, 102, 241, 0.3);
        }

        .skill-icon {
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
            position: relative;
            z-index: 1;
            transition: transform 0.4s ease;
        }

        .skill-card:hover .skill-icon {
            transform: scale(1.2) rotate(5deg);
        }

        .skill-card h4 {
            font-size: 1.2rem;
            font-weight: 700;
            position: relative;
            z-index: 1;
            transition: color 0.4s ease;
        }

        .skill-card:hover h4 {
            color: white;
        }

        /* Courses Section */
        .courses {
            padding: 100px 2rem;
            background: #fff;
        }

        .courses .section-title h2 {
            font-size: 2.5rem;
        }

        .course-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
        }

        .course-card {
            background: #ffffff;
            border-radius: 16px;
            box-shadow: 0px 5px 18px rgba(0, 0, 0, 0.12);
            overflow: hidden;
            text-align: center;
            transition: 0.3s ease;
        }

        .course-card:hover {
            transform: translateY(-10px);
            box-shadow: 0px 8px 25px rgba(0, 0, 0, 0.22);
        }

        .course-img img {
            width: 100%;
            height: 280px;
            object-fit: cover;
        }

        .course-card h3 {
            font-size: 1.5rem;
            margin: 20px 0 10px;
            color: #222;
            padding: 0 15px;
        }

        .course-card p {
            font-size: 1rem;
            padding: 0 15px 20px;
            color: #555;
        }

        /* Projects Section */
        .projects {
            padding: 100px 2rem;
            background: var(--light);
        }

        .projects-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }

        .project-card {
            background: white;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            transition: all 0.3s;
        }

        .project-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
        }

        .project-image {
            height: 200px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3rem;
            color: white;
        }

        .project-content {
            padding: 2rem;
        }

        .project-content h3 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
            color: var(--dark);
        }

        .project-content p {
            color: var(--gray);
            margin-bottom: 1rem;
        }

        /* Education Section */
        .education {
            padding: 100px 2rem;
            background: white;
        }

        .education-timeline {
            position: relative;
            padding-left: 3rem;
        }

        .education-timeline::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: linear-gradient(to bottom, #667eea, #764ba2);
        }

        .education-item {
            position: relative;
            margin-bottom: 3rem;
            padding-left: 2rem;
        }

        .education-item::before {
            content: '';
            position: absolute;
            left: -3.5rem;
            top: 0;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--primary);
            border: 4px solid white;
            box-shadow: 0 0 0 4px var(--primary);
        }

        .education-item h3 {
            font-size: 1.5rem;
            color: var(--primary);
            margin-bottom: 0.5rem;
        }

        .education-item .year {
            color: var(--gray);
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        .education-item p {
            color: var(--gray);
        }

        /* Contact Section */
        .contact-section {
            padding: 100px 2rem;
            background: var(--light);
        }

        .contact-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: 3rem;
        }

        .contact-form-wrapper {
            background: white;
            padding: 2.5rem;
            border-radius: 20px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }

        .form-row {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }

        .form-full {
            grid-column: 1 / -1;
        }

        .single-input {
            position: relative;
        }

        .single-input label {
            font-weight: 600;
            margin-bottom: 0.5rem;
            display: block;
            color: var(--dark);
        }

        .single-input input,
        .single-input textarea {
            width: 100%;
            padding: 1rem;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
            font-size: 1rem;
            transition: all 0.3s;
            background: white;
        }

        .single-input input:focus,
        .single-input textarea:focus {
            outline: none;
            border-color: var(--primary);
        }

        .submit-btn {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 1rem 2.5rem;
            border: none;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
        }

        .submit-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
        }

        .contact-info-area {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            padding: 2.5rem;
            border-radius: 20px;
            color: white;
        }

        .info-title {
            font-size: 2rem;
            margin-bottom: 1rem;
        }

        .info-desc {
            margin-bottom: 2rem;
            opacity: 0.9;
        }

        .info-item {
            display: flex;
            align-items: center;
            margin-bottom: 1.5rem;
        }

        .info-item i {
            font-size: 1.5rem;
            margin-right: 1rem;
        }

        /* Footer */
        footer {
            background: var(--dark);
            color: white;
            padding: 2rem;
            text-align: center;
        }

        footer p {
            opacity: 0.7;
        }

        /* ========== RESPONSIVE STYLES ========== */

        /* Tablet and below */
        @media (max-width: 968px) {
            .about-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .contact-container {
                grid-template-columns: 1fr;
            }

            .skills-grid {
                grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
                gap: 1.5rem;
            }
        }

        /* Mobile */
        @media (max-width: 768px) {
            /* Navbar Mobile */
            .nav-container {
                padding: 0 1.5rem;
            }

            .logo {
                font-size: 1.3rem;
            }

            .menu-toggle {
                display: flex;
                z-index: 1100;
            }

            .nav-links {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                height: calc(100vh - 70px);
                background: rgba(255, 255, 255, 0.98);
                /* backdrop-filter: blur(10px); */
                flex-direction: column;
                align-items: center;
                justify-content: flex-start;
                padding-top: 3rem;
                gap: 2rem;
                transform: translateX(-100%);
                transition: transform 0.3s ease-in-out;
                overflow-y: auto;
            }

            .nav-links.active {
                transform: translateX(0);
            }

            .nav-links li {
                width: 100%;
                text-align: center;
            }

            .nav-links a {
                font-size: 1.2rem;
                display: block;
                padding: 0.5rem;
            }

            /* Hero Slider */
            .hero-slider {
                height: 100vh;
                margin-top: 60px;
            }

            .slide-content {
                padding: 0 1.5rem;
            }

            .slide-content h1 {
                font-size: 2.2rem;
                line-height: 1.2;
            }

            .slide-content p {
                font-size: 1.1rem;
            }

            .slide-content .btn {
                padding: 0.8rem 2rem;
                font-size: 0.95rem;
            }

            /* About Section */
            .about {
                padding: 60px 1.5rem;
            }

            .section-title h2 {
                font-size: 2rem;
            }

            .section-title p {
                font-size: 1rem;
            }

            .profile-card {
                padding: 2rem 1.5rem;
            }

            .profile-img {
                width: 120px;
                height: 120px;
            }

            .profile-card h3 {
                font-size: 1.5rem;
            }

            .about-details h3 {
                font-size: 1.5rem;
            }

            .about-details p {
                font-size: 1rem;
            }

            /* Gallery */
            .gallery {
                padding: 60px 1.5rem;
            }

            .gallery-container {
                grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
                gap: 1.5rem;
            }

            .gallery-item:hover {
                transform: none;
            }

            .gallery-item:hover img {
                transform: scale(1.1);
            }

            /* Experience */
            .experience {
                padding: 60px 1.5rem;
            }

            .experience-item {
                padding: 1.5rem;
            }

            .experience-header {
                flex-direction: column;
                align-items: flex-start;
            }

            .experience-header h3 {
                font-size: 1.4rem;
            }

            .experience-role {
                font-size: 1rem;
            }

            .experience-item ul li {
                font-size: 0.95rem;
            }

            /* Skills */
            .skills {
                padding: 60px 1.5rem;
            }

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

            .skill-card {
                padding: 1.5rem;
            }

            .skill-icon {
                font-size: 2.5rem;
            }

            .skill-card h4 {
                font-size: 1rem;
            }

            /* Courses */
            .courses {
                padding: 60px 1.5rem;
            }

            .course-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }

            .course-card h3 {
                font-size: 1.3rem;
            }

            /* Projects */
            .projects {
                padding: 60px 1.5rem;
            }

            .projects-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }

            .project-image {
                height: 150px;
                font-size: 2rem;
            }

            .project-content {
                padding: 1.5rem;
            }

            .project-content h3 {
                font-size: 1.3rem;
            }

            /* Education */
            .education {
                padding: 60px 1.5rem;
            }

            .education-timeline {
                padding-left: 2rem;
            }

            .education-item {
                padding-left: 1.5rem;
            }

            .education-item::before {
                left: -2.7rem;
                width: 15px;
                height: 15px;
            }

            .education-item h3 {
                font-size: 1.3rem;
            }

            /* Contact */
            .contact-section {
                padding: 60px 1.5rem;
            }

            .contact-form-wrapper,
            .contact-info-area {
                padding: 2rem 1.5rem;
            }

            .form-row {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }

            .info-title {
                font-size: 1.5rem;
            }

            /* Footer */
            footer {
                padding: 1.5rem;
                font-size: 0.9rem;
            }
        }

        /* Small Mobile */
        @media (max-width: 480px) {
            .slide-content h1 {
                font-size: 1.8rem;
            }

            .slide-content p {
                font-size: 1rem;
            }

            .section-title h2 {
                font-size: 1.7rem;
            }

            .profile-card h3 {
                font-size: 1.3rem;
            }

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

            .gallery-container {
                grid-template-columns: 1fr;
            }
        }






.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    min-width: 250px;
    padding: 15px 20px;
    border-radius: 6px;
    color: #fff;
    font-size: 14px;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-20px);
    transition: all 0.4s ease;
    z-index: 9999;
}

.toast.show {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.toast.success {
    background: #28a745;
}

.toast.error {
    background: #dc3545;
}