:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --text-color: #333;
    --bg-color: #f9f9f9;
    --card-bg: #ffffff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --gradient: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
}

.dark-mode {
    --primary-color: #3498db;
    --secondary-color: #2c3e50;
    --accent-color: #e74c3c;
    --text-color: #f0f0f0;
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --gradient: linear-gradient(135deg, #3498db 0%, #2c3e50 100%);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: var(--transition);
    overflow-x: hidden;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header & Navigation */
header {
    background-color: var(--card-bg);
    box-shadow: var(--shadow);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    z-index: 1001;
}

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

.nav-item {
    margin-left: 30px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    font-size: 1rem;
}

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

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

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.theme-toggle {
    background: none;
    border: none;
    color: var(--text-color);
    cursor: pointer;
    font-size: 1.2rem;
    transition: var(--transition);
    padding: 5px;
}

.theme-toggle:hover {
    color: var(--primary-color);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    width: 25px;
    height: 20px;
    justify-content: space-between;
    z-index: 1001;
}

.hamburger span {
    display: block;
    height: 3px;
    width: 100%;
    background-color: var(--text-color);
    border-radius: 3px;
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Sections */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
    font-size: 2.2rem;
    color: var(--primary-color);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    width: 80px;
    height: 3px;
    background: var(--primary-color);
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
}

/* Home Section */
#home {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient);
    color: white;
    padding: 100px 0 80px;
}

.home-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 50px;
}

.profile-image {
    flex: 1;
    text-align: center;
}

.profile-image img {
    width: 100%;
    max-width: 350px;
    height: auto;
    border-radius: 50%;
    object-fit: cover;
    border: 5px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
}

.profile-image img:hover {
    transform: scale(1.05);
}

.home-text {
    flex: 1;
}

.home-text h1 {
    font-size: 2.8rem;
    margin-bottom: 15px;
    animation: fadeIn 1s ease;
}

.highlight {
    color: var(--accent-color);
}

.home-text h2 {
    font-size: 1.5rem;
    margin-bottom: 25px;
    font-weight: 400;
    animation: fadeIn 1.5s ease;
}

.home-text p {
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 30px;
    animation: fadeIn 2s ease;
}

.cta-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 25px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
    text-align: center;
    font-size: 0.95rem;
}

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

.btn.primary:hover {
    background-color: transparent;
    color: var(--accent-color);
}

.btn.secondary {
    background-color: transparent;
    color: white;
    border: 2px solid white;
}

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

/* Education Section */
.education-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

.education-card {
    background-color: var(--card-bg);
    padding: 25px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
    position: relative;
    overflow: hidden;
}

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

.education-card:hover {
    transform: translateY(-8px);
}

.edu-icon {
    font-size: 2.2rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.education-card h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.education-card p {
    margin-bottom: 8px;
    font-size: 0.95rem;
}

/* Experience Section */
#experience {
    background-color: var(--card-bg);
}

.experience-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.1rem;
    line-height: 1.7;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.experience-icon {
    font-size: 3.5rem;
    color: var(--primary-color);
    margin-bottom: 25px;
}

/* Projects Section */
.projects-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

.project-card {
    background-color: var(--card-bg);
    padding: 25px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
    position: relative;
    overflow: hidden;
}

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

.project-card:hover {
    transform: translateY(-8px);
}

.project-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.project-card h3 {
    margin-bottom: 12px;
    font-size: 1.3rem;
}

.project-card p {
    font-size: 0.95rem;
}

/* Interests Section */
.interests-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.interest-card {
    background-color: var(--card-bg);
    padding: 25px 20px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
    position: relative;
    overflow: hidden;
}

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

.interest-card:hover {
    transform: translateY(-8px);
}

.interest-card i {
    font-size: 2.2rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.interest-card h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.interest-card p {
    font-size: 0.9rem;
}

/* Contact Section */
#contact {
    background-color: var(--card-bg);
}

.contact-desc {
    text-align: center;
    margin-bottom: 40px;
    font-size: 1.1rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 25px;
    max-width: 500px;
    margin: 0 auto;
    width: 100%;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background-color: var(--bg-color);
    border-radius: 10px;
    transition: var(--transition);
}

.contact-item:hover {
    transform: translateX(8px);
}

.contact-item i {
    font-size: 1.4rem;
    color: var(--primary-color);
    width: 30px;
}

.contact-item h3 {
    margin-bottom: 5px;
    color: var(--primary-color);
    font-size: 1.1rem;
}

.contact-item a {
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.95rem;
}

.contact-item a:hover {
    color: var(--primary-color);
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
    justify-content: center;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition);
    font-size: 1.1rem;
}

.social-link:hover {
    transform: translateY(-5px);
    background-color: var(--secondary-color);
}

/* Footer */
footer {
    background-color: var(--card-bg);
    padding: 25px 0;
    text-align: center;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    font-size: 0.9rem;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 992px) {
    .home-content {
        gap: 40px;
    }
    
    .home-text h1 {
        font-size: 2.4rem;
    }
    
    .home-text h2 {
        font-size: 1.3rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        flex-direction: column;
        background-color: var(--card-bg);
        width: 70%;
        height: 100vh;
        text-align: left;
        transition: var(--transition);
        box-shadow: var(--shadow);
        padding: 100px 30px 30px;
        z-index: 1000;
        justify-content: flex-start;
        gap: 0;
    }

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

    .nav-item {
        margin: 0 0 20px 0;
    }

    .nav-link {
        font-size: 1.1rem;
        padding: 10px 0;
        display: block;
    }

    .home-content {
        flex-direction: column;
        text-align: center;
        gap: 30px;
    }

    .home-text h1 {
        font-size: 2.2rem;
    }

    .home-text h2 {
        font-size: 1.2rem;
    }

    .home-text p {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .cta-buttons {
        justify-content: center;
    }

    .profile-image img {
        max-width: 280px;
    }

    section {
        padding: 70px 0;
    }
    
    .education-container,
    .projects-container {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .interests-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .container {
        width: 95%;
        padding: 0 15px;
    }
    
    .navbar {
        padding: 12px 0;
    }
    
    .logo {
        font-size: 1.3rem;
    }
    
    .home-text h1 {
        font-size: 1.9rem;
    }
    
    .home-text h2 {
        font-size: 1.1rem;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
        width: 100%;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .section-title {
        font-size: 1.6rem;
        margin-bottom: 40px;
    }
    
    .interests-container {
        grid-template-columns: 1fr;
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
        gap: 10px;
        padding: 15px;
    }
    
    .contact-item i {
        width: auto;
    }
    
    .profile-image img {
        max-width: 220px;
    }
    
    section {
        padding: 60px 0;
    }
    
    #home {
        padding: 90px 0 60px;
    }
}