:root {
            --primary-color: #6C63FF;
            --primary-dark: #5A52D3;
            --secondary-color: #FF6584;
            --accent-color: #36D1DC;
            --dark-color: #121826;
            --light-color: #FFFFFF;
            --gray-light: #F8F9FA;
            --gray-medium: #E9ECEF;
            --gray-dark: #6C757D;
            --success-color: #28C76F;
            --gradient-primary: linear-gradient(135deg, #6C63FF 0%, #36D1DC 100%);
            --gradient-dark: linear-gradient(135deg, #121826 0%, #2D3748 100%);
            --gradient-accent: linear-gradient(135deg, #FF6584 0%, #FFB347 100%);
            --transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.1);
            --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.07);
            --shadow-md: 0 10px 20px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 15px 30px rgba(0, 0, 0, 0.15);
            --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
            --border-radius: 12px;
            --border-radius-lg: 20px;
            --nav-text: linear-gradient(135deg, #6C63FF, #36D1DC);
        }
     



        [data-theme="light"] {
            --bg-color: #FFFFFF;
            --bg-secondary: #F8F9FA;
            --text-color: #2D3748;
            --text-secondary: #6C757D;
            --card-bg: #FFFFFF;
            --header-bg: rgb(18 24 38 / 0%);
            --border-color: #E9ECEF;
            --footer-bg: #121826;
            --footer-text: #FFFFFF;
            --nav-active: var(--primary-color);
        }

        [data-theme="dark"] {
            --bg-color: #121826;
            --bg-secondary: #1E293B;
            --text-color: #F8FAFC;
            --text-secondary: #94A3B8;
            --card-bg: #1E293B;
            --header-bg: rgb(18 24 38 / 0%);
            --border-color: #2D3748;
            --footer-bg: #0F172A;
            --footer-text: #F8FAFC;
            --nav-active: var(--accent-color);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', sans-serif;
            background-color: var(--bg-color);
            color: var(--text-color);
            line-height: 1.7;
            overflow-x: hidden;
            transition: var(--transition);
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: 'Montserrat', sans-serif;
            font-weight: 700;
            line-height: 1.3;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

        .btn {
            font-weight: 600;
            padding: 14px 32px;
            border-radius: 50px;
            border: none;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
            z-index: 1;
        }

        .btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 0%;
            height: 100%;
            background-color: rgba(255, 255, 255, 0.1);
            transition: width 0.3s ease;
            z-index: -1;
        }

        .btn:hover::before {
            width: 100%;
        }

        .btn-primary {
            background: var(--gradient-primary);
            color: white;
            box-shadow: var(--shadow-md);
        }

        .btn-primary:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

        .btn-outline-primary {
            background: transparent;
            color: var(--primary-color);
            border: 2px solid var(--primary-color);
        }

        .btn-outline-primary:hover {
            background: var(--gradient-primary);
            color: white;
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }

        .section-title {
            position: relative;
            margin-bottom: 40px;
        }

        .section-title h2 {
            font-size: 2.8rem;
            position: relative;
            display: inline-block;
        }

        .section-title h2::after {
            content: '';
            position: absolute;
            width: 80px;
            height: 5px;
            background: var(--gradient-primary);
            bottom: -15px;
            left: 0;
            border-radius: 5px;
        }

        .section-title.center h2::after {
            left: 50%;
            transform: translateX(-50%);
        }

        /* Header & Navigation */
        .navbar {
            background-color: var(--header-bg);
            backdrop-filter: blur(15px);
            padding: 5px 0;
            transition: var(--transition);
            border-bottom: 1px solid var(--border-color);
        }

        .navbar-brand {
            font-weight: 800;
            font-size: 2rem;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .nav-link {
            font-weight: 600;
            margin: 0 10px;
            position: relative;
            padding: 5px 0 !important;
            color: var(--gradient-primaryr) !important;
        }
        .nav-link:hover {
            color: var(--gradient-primary) !important;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            width: 0;
            height: 3px;
            background: var(--gradient-primary);
            bottom: 0;
            left: 0;
            transition: var(--transition);
            border-radius: 3px;
        }

        .nav-link:hover::after,
        .nav-link.active::after {
            width: 100%;
        }

        .theme-toggle {
            background: var(--gradient-primary);
            border: none;
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .theme-toggle:hover {
            transform: rotate(30deg);
            box-shadow: var(--shadow-md);
        }

        /* Hero Section */
        .hero {
            padding: 160px 0 100px;
            min-height: 100vh;
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
            background: var(--bg-color);
        }

        .hero::before {
            content: '';
            position: absolute;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: var(--gradient-primary);
            opacity: 0.05;
            top: -200px;
            right: -200px;
            z-index: 0;
        }

        .hero::after {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: var(--gradient-accent);
            opacity: 0.05;
            bottom: -150px;
            left: -150px;
            z-index: 0;
        }

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

        .hero-content .greeting {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--primary-color);
            margin-bottom: 15px;
            display: inline-block;
            background: rgba(108, 99, 255, 0.1);
            padding: 8px 20px;
            border-radius: 50px;
        }

        .hero-content h1 {
            font-size: 61px;
            font-weight: 800;
            margin-bottom: 20px;
            line-height: 1.1;
        }

        .hero-content .highlight {
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-content .tagline {
            font-size: 1.3rem;
            color: var(--text-secondary);
            margin-bottom: 30px;
            max-width: 600px;
        }

        .hero-btns {
            margin-top: 40px;
        }

        .hero-btns .btn {
            margin-right: 20px;
            margin-bottom: 15px;
        }

        .hero-stats {
            display: flex;
            margin-top: 60px;
            gap: 40px;
        }

        .stat-item {
            display: flex;
            align-items: center;
        }
        

        .stat-icon {
            width: 50px;
            height: 50px;
            border-radius: 12px;
            background: var(--gradient-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.5rem;
            margin-right: 15px;
        }

        .stat-number {
            font-size: 1.8rem;
            font-weight: 700;
            line-height: 1;
        }

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

        .hero-image {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .profile-frame {
            position: relative;
            display: inline-block;
            border-radius: var(--border-radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-xl);
        }

        .profile-frame::before {
            content: '';
            position: absolute;
            top: -10px;
            left: -10px;
            right: -10px;
            bottom: -10px;
            background: var(--gradient-primary);
            border-radius: 30px;
            z-index: -1;
            opacity: 0.5;
        }

        .profile-frame img {
            width: 100%;
            max-width: 500px;
            border-radius: var(--border-radius-lg);
            position: relative;
            z-index: 1;
        }

        /* About Section */
        .about-section {
            padding: 120px 28px;
            background-color: var(--bg-secondary);
        }

        .about-image {
            position: relative;
        }

        .about-image img {
            border-radius: var(--border-radius-lg);
            box-shadow: var(--shadow-lg);
            width: 100%;
        }

        .experience-badge {
            position: absolute;
            bottom: 30px;
            right: 30px;
            background: var(--gradient-primary);
            color: white;
            padding: 20px;
            border-radius: var(--border-radius);
            text-align: center;
            box-shadow: var(--shadow-lg);
        }

        .experience-badge .years {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1;
        }

        .about-content h3 {
            font-size: 25px;
            margin-bottom: 25px;
        }

        .about-content p {
            margin-bottom: 20px;
            color: var(--text-secondary);
        }

        .skill-item {
            margin-bottom: 25px;
        }

        .skill-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 8px;
        }

        .skill-name {
            font-weight: 600;
        }

        .skill-percent {
            color: var(--primary-color);
            font-weight: 700;
        }

        .skill-bar {
            height: 10px;
            background-color: var(--border-color);
            border-radius: 5px;
            overflow: hidden;
        }

        .skill-progress {
            height: 100%;
            border-radius: 5px;
            background: var(--gradient-primary);
            position: relative;
            overflow: hidden;
        }

        .skill-progress::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            bottom: 0;
            width: 20px;
            background: rgba(255, 255, 255, 0.3);
            transform: skewX(-20deg);
            animation: shimmer 2s infinite;
        }

        @keyframes shimmer {
            0% { left: -100px; }
            100% { left: 100%; }
        }

        /* Services Section */
        .services-section {
            padding: 120px 0;
        }

        .service-card {
            background-color: var(--card-bg);
            border-radius: var(--border-radius);
            padding: 40px 30px;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            height: 100%;
            border: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 5px;
            height: 100%;
            background: var(--gradient-primary);
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-15px);
            box-shadow: var(--shadow-lg);
        }

        .service-card:hover::before {
            width: 100%;
            opacity: 0.05;
        }

        .service-icon {
            font-size: 2.8rem;
            margin-bottom: 25px;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .service-card h4 {
            margin-bottom: 15px;
            font-size: 1.5rem;
        }

        .service-card p {
            color: var(--text-secondary);
        }

        /* Portfolio Section */
        .portfolio-section {
            padding: 120px 0;
            background-color: var(--bg-secondary);
        }

        .portfolio-filter {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 50px;
        }

        .filter-btn {
            padding: 10px 25px;
            background: transparent;
            border: 2px solid var(--border-color);
            color: var(--text-color);
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
            cursor: pointer;
        }

        .filter-btn.active,
        .filter-btn:hover {
            background: var(--gradient-primary);
            color: white;
            border-color: transparent;
        }

        .portfolio-item {
            background-color: var(--card-bg);
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            margin-bottom: 30px;
            height: 100%;
            border: 1px solid var(--border-color);
        }

        .portfolio-item:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-lg);
        }

        .portfolio-img {
            height: 220px;
            overflow: hidden;
        }

        .portfolio-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.7s ease;
        }

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

        .portfolio-content {
            padding: 25px;
        }

        .portfolio-content h4 {
            margin-bottom: 10px;
        }

        .portfolio-content p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-bottom: 20px;
        }

        .tech-stack {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tech-tag {
            background: rgba(108, 99, 255, 0.1);
            color: var(--primary-color);
            padding: 5px 12px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
        }

        /* Testimonials */
        .testimonials-section {
            padding: 120px 8px;
        }

        .testimonial-card {
            background: var(--card-bg);
            border-radius: var(--border-radius);
            padding: 40px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
            margin: 0 15px;
            position: relative;
        }

        .testimonial-card::before {
            content: '"';
            position: absolute;
            top: 20px;
            left: 20px;
            font-size: 5rem;
            color: var(--primary-color);
            opacity: 0.1;
            font-family: serif;
            line-height: 1;
        }

        .client-info {
            display: flex;
            align-items: center;
            margin-top: 30px;
        }

        .client-img {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            object-fit: cover;
            margin-right: 15px;
            border: 3px solid var(--primary-color);
        }

        .client-details h5 {
            margin-bottom: 5px;
        }

        .client-details p {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        /* Contact Section */
        .contact-section {
            padding: 120px 0;
            background-color: var(--bg-secondary);
        }

        .contact-form {
            background-color: var(--card-bg);
            padding: 50px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }

        .form-control {
            padding: 15px 20px;
            border-radius: 10px;
            border: 1px solid var(--border-color);
            background-color: var(--card-bg);
            color: var(--text-color);
            transition: var(--transition);
            margin-bottom: 25px;
        }

        .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.25rem rgba(108, 99, 255, 0.25);
        }

        .social-links {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-top: 40px;
        }

        .social-icon {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--gradient-primary);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            transition: var(--transition);
            box-shadow: var(--shadow-md);
        }

        .social-icon:hover {
            transform: translateY(-8px) scale(1.1);
            box-shadow: var(--shadow-lg);
        }

        /* Footer */
        footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding: 80px 0 30px;
        }

        .footer-logo {
            font-weight: 800;
            font-size: 2rem;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 20px;
        }

        .footer-about {
            color: #94A3B8;
            margin-bottom: 30px;
        }

        .footer-links h5 {
            margin-bottom: 25px;
            color: white;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-links h5::after {
            content: '';
            position: absolute;
            width: 40px;
            height: 3px;
            background: var(--gradient-primary);
            bottom: 0;
            left: 0;
            border-radius: 3px;
        }

        .footer-links ul {
            list-style: none;
            padding: 0;
        }

        .footer-links ul li {
            margin-bottom: 12px;
        }

        .footer-links ul li a {
            color: #94A3B8;
            transition: var(--transition);
        }

        .footer-links ul li a:hover {
            color: var(--primary-color);
            padding-left: 5px;
        }

        .copyright {
            text-align: center;
            padding-top: 50px;
            margin-top: 50px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #94A3B8;
        }

        .portfolio_part{
            justify-content: center;
        }

.carousel-control-prev-icon,
.carousel-control-next-icon {
    width: 37px;
    height: 37px;
    background: var(--gradient-primary);

    -webkit-mask-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath d='M4.646 1.646a.5.5 0 0 1 .708 0l6 6a.5.5 0 0 1 0 .708l-6 6a.5.5 0 0 1-.708-.708L10.293 8 4.646 2.354a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");

    -webkit-mask-repeat: no-repeat;
    -webkit-mask-position: center;
    -webkit-mask-size: contain;

    mask-repeat: no-repeat;
    mask-position: center;
    mask-size: contain;
}

/* left arrow */
.carousel-control-prev-icon {
    transform: rotate(180deg);
}


.carousel-control-prev,
.carousel-control-next {
    width: auto;
    top: 50%;
    transform: translateY(-50%);
    bottom: auto;
}



.carousel-control-prev {
    left: -50px;   /* আরও বামে যাবে */
}

.carousel-control-next {
    right: -50px;  /* আরও ডানে যাবে */
}


.carousel {
    position: relative;
    overflow: visible;
}


.custom-menu-btn {
    border: none;
    background: transparent;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 14px;
    transition: 0.3s ease;
}

/* Gradient Text */
.custom-menu-btn .menu-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
}

/* Gradient Icon */
.custom-menu-btn .menu-icon {
    width: 16px;
    height: 16px;
    display: inline-block;
    background: var(--gradient-primary);

    -webkit-mask-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath d='M1.5 3h13M1.5 8h13M1.5 13h13' stroke='black' stroke-width='2'/%3e%3c/svg%3e");
    -webkit-mask-repeat: no-repeat;
    -webkit-mask-position: center;
    -webkit-mask-size: contain;

    mask-repeat: no-repeat;
    mask-position: center;
    mask-size: contain;
}

/* Hover */
.custom-menu-btn:hover {
    background: rgba(0,0,0,0.08);
}



        /* Responsive Design */
        @media (max-width: 1199px) {
            .hero-content h1 {
                font-size: 50px;
            }
        }

        @media (max-width: 991px) {
            .hero {
                padding: 140px 0 80px;
            }
            
            .hero-content h1 {
                font-size: 3rem;
            }
            
            .hero-image {
                margin-top: 60px;
            }
            
            .section-title h2 {
                font-size: 2.4rem;
                margin-top: 60px;
            }

.service-card h4 {
    margin-bottom: 15px;
    font-size: 1.5rem;
}
.service-card p {
    font-size: 16px;
}
.service-card {
    padding: 40px 30px;
}
.service-icon {
    margin-bottom: 25px;
}

.portfolio-img {
    height: 220px;
}
.portfolio-content{
    padding: 25px;
}
.tech-tag {
    font-size: 0.8rem;
}
.portfolio-content p {
    font-size: 0.95rem;
}
.portfolio-item {
    margin-bottom: 30px;
}
        }

        @media (max-width: 767px) {
            .hero-content h1 {
                font-size: 2.5rem;
            }
            
            .hero-stats {
                gap: 20px;
            }
            
            .section-title h2 {
                font-size: 2.2rem;
            }
            
            .contact-form {
                padding: 30px;
            }
            .carousel-control-prev {
                left: -20px;
            }

            .carousel-control-next {
                right: -20px;
            }
.service-card h4 {
    margin-bottom: 14px;
    font-size: 22px;
}
.service-card p {
    font-size: 14px;
}
.service-card {
    padding: 28px 27px;
}

.portfolio-img {
    height: 170px;
}
.portfolio-content{
    padding: 25px 14px;
}
.tech-tag {
    font-size: 12px;
    padding: 5px 12px;
}
.portfolio-content p {
        font-size: 14px;
        margin-bottom: 20px;
    }
.portfolio-item {
    margin-bottom: 28px;
}
.portfolio-content h4 {
    margin-bottom: 5px;
    font-size: 17px;
}
.filter-btn {
    padding: 10px 25px;
        }
.testimonial-card p {
            font-size: 16px;
        }

    }


        @media (max-width: 575px) {
            .hero-content h1 {
                font-size: 2.2rem;
            }
            
            .hero-content .tagline {
                font-size: 1.1rem;
            }
            
            .hero-btns .btn {
                display: block;
                width: 100%;
                margin-right: 0;
                margin-bottom: 15px;
            }
            .social-icon {
                width: 43px;
                height: 43px;
            }
            .stat-text {
    font-size: 12px;
}


.service-card {
    padding: 28px 13px;
}
.service-card h4 {
    margin-bottom: 5px;
    font-size: 16px;
}
.service-card p {
    font-size: 12px;
}
.service-icon{
    margin-bottom: 9px;
}

.portfolio-img {
    height: 112px;
}

.portfolio-content p {
        font-size: 12px;
        margin-bottom: 7px;
    }
.portfolio-item {
    margin-bottom: 28px;
}
    .tech-tag {
        font-size: 7px;
        padding: 3px 8px;
    }
    .portfolio-content {
        padding: 7px 8px;
    }
    .filter-btn {
            padding: 3px 14px;
            font-size: 12px;
        }
        .testimonial-card p {
            font-size: 13px;
        }

        .portfolio-filter.fade-up.animated a {
        padding: 10px 25px;
        font-size: 16px;
    }

    }

        /* Animation Classes */
        .fade-up {
            opacity: 0;
            transform: translateY(40px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .fade-up.animated {
            opacity: 1;
            transform: translateY(0);
        }

        .fade-left {
            opacity: 0;
            transform: translateX(-40px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .fade-left.animated {
            opacity: 1;
            transform: translateX(0);
        }

        .fade-right {
            opacity: 0;
            transform: translateX(40px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .fade-right.animated {
            opacity: 1;
            transform: translateX(0);
        }