/* CSS Variables for Themes */
:root {
    /* Light Theme */
    --primary-color: #4361ee;
    --secondary-color: #3f37c9;
    --accent-color: #f72585;
    --text-color: #333333;
    --text-light: #666666;
    --bg-color: #ffffff;
    --bg-secondary: #f8f9fa;
    --card-bg: #ffffff;
    --border-color: #e0e0e0;
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --nav-bg: rgba(255, 255, 255, 0.95);
    
    /* Dark Theme */
    --primary-dark: #4cc9f0;
    --secondary-dark: #4895ef;
    --accent-dark: #f72585;
    --text-dark: #f8f9fa;
    --text-light-dark: #adb5bd;
    --bg-dark: #121212;
    --bg-secondary-dark: #1e1e1e;
    --card-bg-dark: #1e1e1e;
    --border-dark: #333333;
    --shadow-dark: 0 5px 15px rgba(0, 0, 0, 0.3);
    --nav-bg-dark: rgba(30, 30, 30, 0.95);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: all 0.3s ease;
}

body.dark {
    --primary-color: var(--primary-dark);
    --secondary-color: var(--secondary-dark);
    --accent-color: var(--accent-dark);
    --text-color: var(--text-dark);
    --text-light: var(--text-light-dark);
    --bg-color: var(--bg-dark);
    --bg-secondary: var(--bg-secondary-dark);
    --card-bg: var(--card-bg-dark);
    --border-color: var(--border-dark);
    --shadow: var(--shadow-dark);
    --nav-bg: var(--nav-bg-dark);
}

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

.section-padding {
    padding: 100px 0;
}

.bg-light {
    background-color: var(--bg-secondary);
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 2px;
}

.section-subtitle {
    color: var(--text-light);
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 600;
    text-transform: capitalize;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--secondary-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

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

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

/* Header Styles */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: var(--nav-bg);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.header.scrolled {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

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

.nav-link {
    color: var(--text-color);
    font-weight: 600;
    margin: 0 15px;
    padding: 10px 0;
    position: relative;
    text-decoration: none;
    transition: color 0.3s ease;
}

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

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

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.theme-toggle {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.2rem;
    cursor: pointer;
    margin-left: 20px;
    transition: transform 0.3s ease;
}

.theme-toggle:hover {
    transform: rotate(30deg);
}

.hamburger {
    display: none;
    cursor: pointer;
}

.bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    background-color: var(--text-color);
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    display: flex;
    align-items: center;
    min-height: 100vh;
    padding-top: 80px;
    background-color: var(--bg-color);
}

.hero-content {
    flex: 1;
    padding-right: 40px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 15px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.hero-text {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 30px;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.hero-image {
    flex: 1;
    position: relative;
}

.image-wrapper {
    position: relative;
    max-width: 400px;
    margin: 0 auto;
}

.profile-image {
    width: 100%;
    border-radius: 20px;
    box-shadow: var(--shadow);
    position: relative;
    z-index: 1;
}

.decoration-circle {
    position: absolute;
    width: 120%;
    height: 120%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 30px;
    top: -10%;
    left: -10%;
    z-index: 0;
    opacity: 0.1;
}

.tech-stack {
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 15px;
    background: var(--card-bg);
    padding: 15px 25px;
    border-radius: 50px;
    box-shadow: var(--shadow);
    z-index: 2;
}

.tech-icon {
    width: 40px;
    height: 40px;
    background: var(--bg-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

.tech-icon:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-5px);
}

/* About Section */
.about-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.about-image {
    flex: 1;
}

.about-image img {
    width: 100%;
    max-width: 400px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    filter: grayscale(100%);
    transition: filter 0.5s ease, transform 0.3s ease;
}

.about-image img:hover {
    filter: grayscale(0%);
    transform: scale(1.05);
}    

.about-text {
    flex: 1;
}

.about-text h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
}

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

.about-details {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin: 25px 0;
}

.detail-item {
    display: flex;
}

.detail-label {
    font-weight: 600;
    margin-right: 10px;
    min-width: 100px;
}

.detail-value {
    color: var(--text-light);
}

.skills {
    margin: 30px 0;
}

.skills h4 {
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.skill-bars {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.skill-bar {
    width: 100%;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 5px;
}

.skill-info span {
    font-size: 0.9rem;
}

.progress-bar {
    height: 8px;
    background: var(--bg-secondary);
    border-radius: 4px;
    overflow: hidden;
}

.progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 4px;
}

.about-buttons {
    display: flex;
    gap: 20px;
    margin-top: 30px;
}

/* Services Section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--card-bg);
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    text-align: center;
}

.service-card:hover {
    transform: translateY(-10px);
}

.service-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: white;
    font-size: 1.5rem;
}

.service-title {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.service-description {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* Portfolio Section */
.portfolio-filter {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 40px;
}

.filter-btn {
    padding: 8px 20px;
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.portfolio-item {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.portfolio-item:hover {
    transform: translateY(-10px);
}

.portfolio-img {
    position: relative;
    overflow: hidden;
    height: 250px;
}

.portfolio-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(67, 97, 238, 0.9);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    color: white;
    text-align: center;
    padding: 20px;
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-overlay h3 {
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.portfolio-overlay p {
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.portfolio-link {
    width: 40px;
    height: 40px;
    background: white;
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.portfolio-link:hover {
    background: var(--secondary-color);
    color: white;
    transform: rotate(45deg);
}

.portfolio-cta {
    text-align: center;
    margin-top: 50px;
}

.portfolio-cta p {
    color: var(--text-light);
    margin-bottom: 20px;
}

/* Testimonials Section */
.testimonials-slider {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.testimonial {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    text-align: center;
    display: none;
}

.testimonial.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.quote-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.testimonial-text {
    font-size: 1.1rem;
    font-style: italic;
    color: var(--text-light);
    margin-bottom: 30px;
    line-height: 1.8;
}

.testimonial-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.testimonial-author img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}

.author-info h4 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.author-info p {
    color: var(--text-light);
    font-size: 0.9rem;
}

.slider-controls {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    transform: translateY(-50%);
    z-index: 10;
}

.slider-prev,
.slider-next {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.slider-prev:hover,
.slider-next:hover {
    background: var(--secondary-color);
    transform: scale(1.1);
}

.slider-prev {
    transform: translateX(-50%);
}

.slider-next {
    transform: translateX(50%);
}

/* Contact Section Styles */
.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 50px;
}

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

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--bg-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.1rem;
    flex-shrink: 0;
}

.contact-text h3 {
    font-size: 1.2rem;
    margin-bottom: 5px;
    color: var(--text-color);
}

.contact-text p {
    color: var(--text-light);
}

.contact-social h3 {
    margin-bottom: 15px;
    color: var(--text-color);
}

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

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--bg-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-3px);
}

.social-link {
    transition: transform 0.3s ease, color 0.3s ease;
}

.social-link:hover {
    transform: translateY(-3px);
}

.fab.fa-github:hover {
    color: #181717;
}

.fab.fa-instagram:hover {
    color: #E4405F; 
}

/* Form Styles */
.contact-form {
    background: var(--card-bg);
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.form-group {
    position: relative;
    margin-bottom: 25px;
}

.form-control {
    width: 100%;
    padding: 15px;
    font-size: 1rem;
    color: var(--text-color);
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.2);
}

.form-label {
    position: absolute;
    top: 15px;
    left: 15px;
    color: var(--text-light);
    background: var(--bg-secondary);
    padding: 0 5px;
    transition: all 0.3s ease;
    pointer-events: none;
}

.form-control:focus + .form-label,
.form-control:not(:placeholder-shown) + .form-label {
    top: -10px;
    left: 10px;
    font-size: 0.85rem;
    color: var(--primary-color);
    background: var(--bg-color);
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
}

.form-message {
    margin-top: 20px;
    padding: 10px;
    border-radius: 5px;
    display: none;
}

.form-message.success {
    background: rgba(40, 167, 69, 0.1);
    color: #28a745;
    display: block;
}

.form-message.error {
    background: rgba(220, 53, 69, 0.1);
    color: #dc3545;
    display: block;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .contact-info {
        order: 2;
        margin-top: 40px;
    }
    
    .contact-form {
        order: 1;
    }
}
/* Footer */
.footer {
    background-color: var(--bg-secondary);
    padding: 30px 0;
    text-align: center;
}

.copyright p {
    color: var(--text-light);
    margin-bottom: 10px;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
    text-decoration: none;
}

.back-to-top.active {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--secondary-color);
    transform: translateY(-5px);
}

/* Responsive Styles */
@media (max-width: 992px) {
    .hero-content {
        padding-right: 0;
        margin-bottom: 50px;
    }
    
    .about-content {
        flex-direction: column;
    }
    
    .contact-content {
        flex-direction: column;
    }
    
    .contact-info {
        margin-bottom: 50px;
    }
}

@media (max-width: 768px) {
    .section-padding {
        padding: 80px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 2.8rem;
    }
    
    .hero-subtitle {
        font-size: 1.3rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-list {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--bg-color);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 30px;
        transition: left 0.3s ease;
    }
    
    .nav-list.active {
        left: 0;
    }
    
    .hamburger {
        display: block;
    }
    
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .section-title {
        font-size: 1.8rem;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .about-details {
        grid-template-columns: 1fr;
    }
    
    .copyright {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}