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

:root {
    --text-primary: #2d3748;
    --text-secondary: #718096;
    --bg-primary: #ffffff;
    --bg-secondary: #f7fafc;
    --border-color: #e2e8f0;
    --accent-color: #3182ce;
    --max-width: 900px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    line-height: 1.6;
    font-size: 16px;
}

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Navigation */
.navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 3rem;
}

.nav-logo {
    font-size: 1.25rem;
    font-weight: 600;
    text-decoration: none;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    transition: color 0.2s;
}

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

/* Main Content */
.main-content {
    flex: 1;
    margin-bottom: 4rem;
}

/* Page Styles */
.page-header {
    margin-bottom: 2rem;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.page-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

.page-content {
    font-size: 1.125rem;
    line-height: 1.8;
}

.page-content h2 {
    font-size: 1.875rem;
    font-weight: 600;
    margin: 2rem 0 1rem;
}

.page-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 1.5rem 0 0.75rem;
}

.page-content p {
    margin-bottom: 1.5rem;
}

.page-content a {
    color: var(--accent-color);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s;
}

.page-content a:hover {
    border-bottom-color: var(--accent-color);
}

.page-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 2rem 0;
}

.page-content ul,
.page-content ol {
    margin: 1rem 0 1.5rem 2rem;
}

.page-content li {
    margin-bottom: 0.5rem;
}

/* Homepage Hero */
.hero {
    text-align: center;
    padding: 4rem 0;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.hero-image {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    margin: 0 auto 2rem;
    object-fit: cover;
}

/* Card Grid */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.card {
    background: var(--bg-secondary);
    border-radius: 8px;
    padding: 2rem;
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

.card p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.card h3 a {
    color: var(--text-primary);
    text-decoration: none;
}

.card h3 a:hover {
    color: var(--accent-color);
}

/* Technologies */
.card-technologies {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.tech-tag {
    background: var(--bg-primary);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

/* Buttons */
.view-all-projects {
    text-align: center;
    margin: 3rem 0;
}

.button {
    display: inline-block;
    padding: 0.75rem 2rem;
    background: var(--accent-color);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    transition: background-color 0.2s, transform 0.2s;
    font-weight: 500;
}

.button:hover {
    background: #2563eb;
    transform: translateY(-1px);
}

/* Footer */
.footer {
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    text-align: center;
    color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 768px) {
    .navigation {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-links {
        gap: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .page-title {
        font-size: 2rem;
    }
}