:root {
    /* Light Theme Variables */
    --bg-color: #ffffff;
    --bg-alt: #f8fafc;
    --text-color: #0f172a;
    --text-light: #475569;
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --accent-color: #3b82f6;
    --border-color: #e2e8f0;
    --card-bg: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --transition: all 0.3s ease;
}

[data-theme="dark"] {
    /* Dark Theme Variables */
    --bg-color: #0f172a;
    --bg-alt: #1e293b;
    --text-color: #f8fafc;
    --text-light: #94a3b8;
    --primary-color: #3b82f6;
    --primary-hover: #60a5fa;
    --accent-color: #60a5fa;
    --border-color: #334155;
    --card-bg: #1e293b;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.15);
}

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

html {
    scroll-behavior: smooth;
    font-family: 'Inter', sans-serif;
}

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

ul {
    list-style: none;
}

a {
    text-decoration: none;
    color: inherit;
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--primary-color);
    color: #ffffff !important;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

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

.btn-outline:hover {
    background-color: var(--primary-color);
    color: #ffffff;
    transform: translateY(-2px);
}

/* Sections */
.section {
    padding: 6rem 5%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

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

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

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.divider {
    height: 4px;
    width: 60px;
    background-color: var(--primary-color);
    margin: 0 auto;
    border-radius: 2px;
}

/* Navbar */
#navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(var(--bg-color), 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: background-color var(--transition), border-color var(--transition);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
}

.logo span {
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    font-weight: 500;
    transition: color var(--transition);
}

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

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

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

.hamburger {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding-top: 8rem;
    max-width: 1200px;
    margin: 0 auto;
}

.hero-content {
    flex: 1;
    padding-right: 2rem;
}

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

.name {
    font-size: 4rem;
    margin-bottom: 1rem;
    background: linear-gradient(to right, var(--primary-color), #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.tagline {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

.image-wrapper {
    position: relative;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 4px solid var(--border-color);
    background-color: var(--bg-alt);
}

.image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* About Section */
.about-content {
    display: flex;
    flex-wrap: wrap;
    gap: 4rem;
    max-width: 1200px;
    margin: 0 auto;
}

.about-text {
    flex: 1;
    min-width: 300px;
}

.about-text p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    color: var(--text-light);
}

.about-cards {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.card {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: transform var(--transition);
}

.card:hover {
    transform: translateY(-5px);
}

.card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.card h3 {
    margin-bottom: 0.5rem;
}

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

/* Skills Section */
.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.skill-category h3 {
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.skill {
    margin-bottom: 1.5rem;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background-color: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.progress {
    height: 100%;
    background-color: var(--primary-color);
    border-radius: 4px;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.project-card {
    background-color: var(--card-bg);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: transform var(--transition);
    display: flex;
    flex-direction: column;
}

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

.project-content {
    padding: 2rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-tags {
    margin-bottom: 1rem;
}

.project-tags span {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--primary-color);
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
}

.project-card h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.project-card p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
    flex: 1;
}

.project-links a {
    margin-right: 1rem;
    font-weight: 600;
    transition: color var(--transition);
}

.project-links a:hover {
    color: var(--primary-color);
}

/* Education Section */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 20px;
    height: 100%;
    width: 2px;
    background-color: var(--border-color);
}

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

.timeline-dot {
    position: absolute;
    left: 13px;
    top: 5px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--primary-color);
    border: 3px solid var(--bg-alt);
}

.timeline-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

.timeline-content h4 {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

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

/* Contact Section */
.contact-container {
    display: flex;
    flex-wrap: wrap;
    gap: 4rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    flex: 1;
    min-width: 300px;
}

.contact-info h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.contact-info p {
    color: var(--text-light);
    margin-bottom: 2rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

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

.contact-form {
    flex: 1;
    min-width: 300px;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.input-group input,
.input-group textarea {
    width: 100%;
    padding: 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    background-color: var(--card-bg);
    color: var(--text-color);
    font-family: inherit;
    transition: border-color var(--transition);
}

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

/* Footer */
footer {
    background-color: var(--card-bg);
    padding: 2rem 5%;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--card-bg);
        flex-direction: column;
        padding: 2rem;
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .hamburger {
        display: block;
    }
    
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 6rem;
    }
    
    .hero-content {
        padding-right: 0;
        margin-bottom: 3rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .image-wrapper {
        width: 300px;
        height: 300px;
    }
    
    .name {
        font-size: 3rem;
    }
}