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

        body {
            font-family: 'Poppins', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #e0f2fe, #bae6fd);
            color: #1e293b;
            line-height: 1.6;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        a {
            color: #2563eb;
            text-decoration: none;
            transition: color 0.3s ease;
        }

            a:hover {
                color: #1e40af;
            }

        /* Navigation */
        nav {
            background: #1e40af;
            padding: 15px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 100;
        }

            nav .logo {
                font-weight: 700;
                font-size: 1.5rem;
                color: white;
                letter-spacing: 1.2px;
            }

            nav ul {
                list-style: none;
                display: flex;
                gap: 25px;
            }

                nav ul li a {
                    color: white;
                    font-weight: 600;
                    font-size: 1rem;
                    padding: 8px 12px;
                    border-radius: 6px;
                    transition: background-color 0.3s ease;
                }

                    nav ul li a:hover,
                    nav ul li a:focus {
                        background-color: #2563eb;
                        outline: none;
                    }

        /* Header */
        header {
            background: linear-gradient(135deg, #1e40af, #2563eb);
            color: white;
            padding: 80px 20px 100px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .profile-img {
            width: 220px;           /* bigger default size */
            height: 220px;
            max-width: 40vw;        /* responsive: at most 40% of viewport width */
            max-height: 40vw;       /* keep square ratio */
            border-radius: 50%;
            object-fit: cover;
            border: 5px solid rgba(255 255 255 / 0.3);
            box-shadow: 0 5px 15px rgba(0 0 0 / 0.2);
            margin: 0 auto 20px;
            transition: transform 0.3s ease;
}

            .profile-img:hover {
                transform: scale(1.05) rotate(3deg);
                box-shadow: 0 10px 25px rgba(0 0 0 / 0.3);
            }

        header h1 {
            font-size: 2.8rem;
            margin-bottom: 10px;
            font-weight: 700;
            letter-spacing: 1.2px;
        }

        header p {
            font-size: 1.3rem;
            font-weight: 500;
            color: #bfdbfe;
            margin-bottom: 25px;
        }

        .social-links {
            display: flex;
            justify-content: center;
            gap: 20px;
        }

            .social-links a {
                width: 45px;
                height: 45px;
                background: rgba(255 255 255 / 0.2);
                border-radius: 50%;
                display: flex;
                align-items: center;
                justify-content: center;
                color: white;
                font-size: 1.3rem;
                transition: background-color 0.3s ease, transform 0.3s ease;
                box-shadow: 0 2px 8px rgba(0 0 0 / 0.15);
            }

                .social-links a:hover {
                    background: white;
                    color: #2563eb;
                    transform: translateY(-5px) scale(1.1);
                    box-shadow: 0 8px 20px rgba(37 99 235 / 0.4);
                }

        /* Summary - full width */
        section.summary {
            background: white;
            border-radius: 12px;
            padding: 40px 30px;
            margin: -80px auto 40px;
            max-width: 1000px;
            box-shadow: 0 10px 30px rgba(0 0 0 / 0.1);
            position: relative;
            z-index: 10;
        }

        /* Container */
        .container {
            max-width: 1000px;
            margin: 0 auto 60px;
            padding: 0 20px;
            flex-grow: 1;
        }

        h1, h2, h3 {
            color: #1e293b;
            margin-bottom: 15px;
            font-weight: 700;
        }

        h2 {
            position: relative;
            padding-bottom: 10px;
            margin-bottom: 30px;
            font-size: 2rem;
            display: inline-block;
        }

            h2::after {
                content: '';
                position: absolute;
                bottom: 0;
                left: 0;
                width: 60px;
                height: 4px;
                background: linear-gradient(90deg, #2563eb, #3b82f6);
                border-radius: 2px;
            }

        p {
            margin-bottom: 15px;
            color: #475569;
        }
        /* Skills */
        .skills-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 25px;
            margin-top: 40px;
        }

        .skill-box {
            background: white;
            border-radius: 12px;
            padding: 25px 20px;
            box-shadow: 0 6px 20px rgba(0 0 0 / 0.07);
            transition: box-shadow 0.3s ease, transform 0.3s ease;
            cursor: default;
        }

            .skill-box:hover {
                box-shadow: 0 12px 30px rgba(37 99 235 / 0.3);
                transform: translateY(-6px);
            }

            .skill-box h3 {
                color: #2563eb;
                margin-bottom: 15px;
                font-weight: 600;
                font-size: 1.2rem;
            }

        .skill-list {
            list-style: none;
            color: #475569;
            font-weight: 500;
        }

            .skill-list li {
                margin-bottom: 10px;
                position: relative;
                padding-left: 20px;
                transition: color 0.3s ease;
            }

                .skill-list li::before {
                    content: '✔';
                    position: absolute;
                    left: 0;
                    color: #2563eb;
                    font-weight: 700;
                }

        /* Projects */
        .projects-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }

        .project-card {
            background: white;
            border-radius: 14px;
            box-shadow: 0 8px 25px rgba(0 0 0 / 0.08);
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            cursor: pointer;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

            .project-card:hover,
            .project-card:focus {
                transform: translateY(-10px);
                box-shadow: 0 20px 40px rgba(37 99 235 / 0.4);
                outline: none;
            }

        .project-content {
            padding: 25px 30px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .project-title {
            font-size: 1.4rem;
            margin-bottom: 12px;
            color: #1e293b;
            font-weight: 700;
        }

        .project-desc {
            flex-grow: 1;
            color: #475569;
            margin-bottom: 20px;
            font-weight: 500;
        }

        .project-tech {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 20px;
        }

        .tech-tag {
            background: #dbeafe;
            color: #2563eb;
            padding: 6px 14px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.85rem;
            user-select: none;
            transition: background-color 0.3s ease;
        }

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

            .project-links a {
                flex: 1;
                text-align: center;
                padding: 12px 0;
                border-radius: 10px;
                font-weight: 600;
                color: white;
                background: linear-gradient(90deg, #2563eb, #3b82f6);
                box-shadow: 0 4px 12px rgba(37 99 235 / 0.3);
                transition: background 0.3s ease, box-shadow 0.3s ease;
                display: inline-flex;
                align-items: center;
                justify-content: center;
                gap: 8px;
            }

                .project-links a:hover,
                .project-links a:focus {
                    background: linear-gradient(90deg, #1e40af, #2563eb);
                    box-shadow: 0 8px 20px rgba(37 99 235 / 0.5);
                    outline: none;
                }

        /* Product Preview Card Component */
        .product-card {
            background: white;
            border-radius: 14px;
            box-shadow: 0 8px 25px rgba(0 0 0 / 0.08);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            cursor: pointer;
        }

            .product-card:hover,
            .product-card:focus {
                transform: translateY(-10px);
                box-shadow: 0 20px 40px rgba(37 99 235 / 0.4);
                outline: none;
            }

        .product-image {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

        .product-content {
            padding: 20px 25px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            flex-grow: 1;
        }

        .product-title {
            font-size: 1.3rem;
            font-weight: 700;
            color: #1e293b;
        }

        .product-description {
            color: #475569;
            font-weight: 500;
            flex-grow: 1;
        }

        .product-price {
            font-weight: 700;
            color: #2563eb;
            font-size: 1.2rem;
        }

        .product-buttons {
            display: flex;
            gap: 15px;
            margin-top: 15px;
        }

        .btn-primary {
            flex: 1;
            background: #2563eb;
            color: white;
            border: none;
            padding: 12px 0;
            border-radius: 10px;
            font-weight: 600;
            cursor: pointer;
            transition: background-color 0.3s ease;
            text-align: center;
        }

            .btn-primary:hover,
            .btn-primary:focus {
                background: #1e40af;
                outline: none;
            }

        .btn-secondary {
            flex: 1;
            background: #dbeafe;
            color: #2563eb;
            border: none;
            padding: 12px 0;
            border-radius: 10px;
            font-weight: 600;
            cursor: pointer;
            transition: background-color 0.3s ease;
            text-align: center;
        }

            .btn-secondary:hover,
            .btn-secondary:focus {
                background: #bfdbfe;
                outline: none;
            }

        /* Education */
        .education-item {
            background: white;
            border-radius: 14px;
            padding: 25px 30px;
            box-shadow: 0 8px 25px rgba(0 0 0 / 0.08);
            display: flex;
            align-items: center;
            gap: 20px;
            margin-bottom: 25px;
            transition: box-shadow 0.3s ease, transform 0.3s ease;
            cursor: default;
        }

            .education-item:hover,
            .education-item:focus {
                box-shadow: 0 20px 40px rgba(37 99 235 / 0.3);
                transform: translateY(-6px);
                outline: none;
            }

        .edu-icon {
            background: #dbeafe;
            color: #2563eb;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            flex-shrink: 0;
            user-select: none;
        }

        .edu-content h3 {
            font-weight: 700;
            font-size: 1.3rem;
            color: #1e293b;
            margin-bottom: 6px;
        }

        .edu-content p {
            color: #475569;
            font-weight: 500;
        }

        /* Contact Section */
        section.contact {
            background: #1e293b;
            color: #f1f5f9;
            padding: 80px 20px;
        }

            section.contact h2 {
                color: #3b82f6;
                margin-bottom: 40px;
            }

        .contact-container {
            max-width: 900px;
            margin: 0 auto;
            display: flex;
            gap: 60px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .contact-info {
            flex: 1 1 300px;
            display: flex;
            flex-direction: column;
            gap: 25px;
        }

        .contact-item {
            display: flex;
            align-items: center;
            gap: 20px;
            font-size: 1.1rem;
            font-weight: 600;
            color: #cbd5e1;
            cursor: default;
            user-select: none;
            transition: color 0.3s ease;
        }

            .contact-item:hover,
            .contact-item:focus {
                color: #3b82f6;
                outline: none;
            }

        .contact-icon {
            background: #2563eb;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: white;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(37 99 235 / 0.5);
            transition: background-color 0.3s ease;
        }

            .contact-icon:hover,
            .contact-icon:focus {
                background: #1e40af;
                outline: none;
            }

        .contact-form {
            flex: 1 1 350px;
            background: white;
            border-radius: 14px;
            padding: 30px 35px;
            box-shadow: 0 10px 30px rgba(0 0 0 / 0.1);
        }

            .contact-form label {
                display: block;
                margin-bottom: 8px;
                font-weight: 600;
                color: #1e293b;
            }

            .contact-form input,
            .contact-form textarea {
                width: 100%;
                padding: 12px 15px;
                margin-bottom: 20px;
                border: 2px solid #cbd5e1;
                border-radius: 8px;
                font-family: inherit;
                font-size: 1rem;
                transition: border-color 0.3s ease;
                resize: vertical;
            }

                .contact-form input:focus,
                .contact-form textarea:focus {
                    border-color: #2563eb;
                    outline: none;
                    box-shadow: 0 0 8px rgba(37 99 235 / 0.4);
                }

            .contact-form button {
                background: linear-gradient(90deg, #2563eb, #3b82f6);
                color: white;
                border: none;
                padding: 14px 0;
                width: 100%;
                font-weight: 700;
                font-size: 1.1rem;
                border-radius: 10px;
                cursor: pointer;
                box-shadow: 0 6px 20px rgba(37 99 235 / 0.4);
                transition: background 0.3s ease, box-shadow 0.3s ease;
            }

                .contact-form button:hover,
                .contact-form button:focus {
                    background: linear-gradient(90deg, #1e40af, #2563eb);
                    box-shadow: 0 10px 30px rgba(37 99 235 / 0.6);
                    outline: none;
                }

        /* Footer */
        footer {
            background: #1e293b;
            color: #94a3b8;
            text-align: center;
            padding: 25px 20px;
            font-size: 0.9rem;
            user-select: none;
        }

        /* Responsive */
        @media (max-width: 900px) {
            .contact-container

        {
            flex-direction: column;
            gap: 40px;
        }

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

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

        }

        @media (max-width: 480px) {
            header h1

        {
            font-size: 2rem;
        }

        h2 {
            font-size: 1.6rem;
        }

        .profile-img {
            width: 160px;
            height: 160px;
            max-width: 60vw;  /* smaller devices → fill more space */
            max-height: 60vw;
        }

        }
        /* General responsive text */
        h1 {
            font-size: clamp(1.8rem, 5vw, 2.8rem);
        }
        h2 {
            font-size: clamp(1.4rem, 4vw, 2rem);
        }
        p, li {
            font-size: clamp(0.95rem, 3vw, 1.1rem);
        }

        /* Navigation */
        nav {
            flex-wrap: wrap;
        }

        nav ul {
            display: flex;
            gap: 25px;
        }

        nav .menu-toggle {
            display: none;
            font-size: 1.8rem;
            color: white;
            background: none;
            border: none;
            cursor: pointer;
        }

        /* Mobile Navigation */
        @media (max-width: 768px) {
            nav ul {
                flex-direction: column;
                gap: 15px;
                width: 100%;
                background: #1e40af;
                margin-top: 15px;
                display: none; /* hidden by default */
            }

            nav ul.show {
                display: flex;
            }

            nav .menu-toggle {
                display: block;
            }
        }

        /* Header adjustments */
        .profile-img {
            width: clamp(140px, 30vw, 220px);
            height: clamp(140px, 30vw, 220px);
        }

        /* Summary box spacing on mobile */
        @media (max-width: 768px) {
            section.summary {
                margin: -60px 15px 30px;
                padding: 25px 20px;
            }
        }

        /* Skills, projects, education responsive */
        @media (max-width: 768px) {
            .skills-grid,
            .projects-grid {
                grid-template-columns: 1fr;
            }

            .education-item {
                flex-direction: column;
                align-items: flex-start;
                text-align: left;
            }

            .contact-container {
                flex-direction: column;
                gap: 30px;
            }
        }