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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

/* Navigation */
.navbar {
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: bold;
    text-decoration: none;
    color: #333;
}

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

.nav-link {
    text-decoration: none;
    color: #666;
    transition: color 0.3s;
}

.nav-link:hover,
.nav-link.active {
    color: #007bff;
}

/* Main Content */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    min-height: calc(100vh - 200px);
}

.hero {
    text-align: center;
    padding: 4rem 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 10px;
    margin-bottom: 3rem;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
}

.content-section {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.content-section h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #333;
}

.content-section h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    margin-top: 2rem;
    color: #444;
}

.content-section p {
    margin-bottom: 1rem;
    color: #666;
}

/* Link Grid */
.link-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.link-card {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 8px;
    text-decoration: none;
    color: inherit;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 2px solid transparent;
}

.link-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
    border-color: #007bff;
}

.link-card h3 {
    color: #007bff;
    margin-bottom: 0.5rem;
}

.link-card p {
    color: #666;
    margin: 0;
}

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

.project-card {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 8px;
    text-decoration: none;
    color: inherit;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 2px solid transparent;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
    border-color: #007bff;
}

.project-card h3 {
    color: #007bff;
    margin-bottom: 0.5rem;
}

.project-card p {
    color: #666;
    margin: 0;
}

/* Project Details */
.project-details {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 2px solid #eee;
}

.back-link {
    display: inline-block;
    margin-bottom: 1rem;
    color: #007bff;
    text-decoration: none;
    transition: color 0.3s;
}

.back-link:hover {
    color: #0056b3;
}

/* Resume Sections */
.resume-section {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #eee;
}

.resume-section:last-child {
    border-bottom: none;
}

/* Footer */
.footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 2rem;
    margin-top: 3rem;
}

/* Database Table Styles */
.table-container {
    overflow-x: auto;
    margin-top: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    font-size: 0.95rem;
}

.data-table thead {
    background-color: #667eea;
    color: white;
}

.data-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    border-bottom: 2px solid #5568d3;
}

.data-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid #eee;
}

.data-table tbody tr:hover {
    background-color: #f8f9fa;
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

.loading-message {
    text-align: center;
    padding: 2rem;
    color: #667eea;
    font-size: 1.1rem;
}

.error-message {
    background-color: #fee;
    color: #c33;
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid #fcc;
    margin-top: 1rem;
}

.data-count {
    margin-top: 1rem;
    padding: 0.75rem;
    background-color: #f8f9fa;
    border-radius: 8px;
    color: #666;
    font-weight: 500;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        flex-direction: column;
        gap: 1rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .link-grid,
    .project-grid {
        grid-template-columns: 1fr;
    }

    .main-content {
        padding: 1rem;
    }

    .data-table {
        font-size: 0.85rem;
    }

    .data-table th,
    .data-table td {
        padding: 0.5rem;
    }
}