```css
/* Base Styles */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: #f9fafb;
    color: #1f2937;
    line-height: 1.6;
}

/* Navigation */
nav {
    transition: all 0.3s ease;
}

.nav-link {
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #3b82f6;
}

.nav-link:hover i {
    stroke: #3b82f6;
}

/* Hero Section */
.hero-bg {
    background: linear-gradient(135deg, rgba(16,24,39,0.9) 0%, rgba(37,99,235,0.8) 100%);
    background-attachment: fixed;
    background-size: cover;
}

/* Skills Section */
.skill-card {
    transition: all 0.3s ease;
    background-color: #f9fafb;
    border-radius: 0.75rem;
    padding: 2rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.skill-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Project Cards */
.project-card {
    transition: box-shadow 0.3s ease;
    background-color: white;
    border-radius: 0.75rem;
    overflow: hidden;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.project-card:hover {
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Buttons */
.btn-primary {
    transition: all 0.3s ease;
    background-color: #3b82f6;
    color: white;
}

.btn-primary:hover {
    background-color: #2563eb;
}

.btn-outline {
    transition: all 0.3s ease;
    border: 1px solid white;
    color: white;
}

.btn-outline:hover {
    background-color: white;
    color: #3b82f6;
}

/* Footer */
footer {
    background-color: #111827;
}

footer a:hover {
    color: white;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .hero-content {
        text-align: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
}

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

.animate-fade-in {
    animation: fadeIn 0.6s ease forwards;
}

/* Utility Classes */
.opacity-90 {
    opacity: 0.9;
}

.max-w-lg {
    max-width: 32rem;
}

.shadow-xl {
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.rounded-2xl {
    border-radius: 1rem;
}

.border-4 {
    border-width: 4px;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #3b82f6;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #2563eb;
}
```