:root {
    --primary-color: #4f46e5;
    --secondary-color: #6366f1;
    --accent-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --dark-color: #111827;
    --light-color: #f9fafb;
    --border-color: #e5e7eb;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: var(--light-color);
}

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

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 3rem 0;
    text-align: center;
}

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

.site-subtitle {
    font-size: 1.125rem;
    opacity: 0.9;
}

/* Navigation */
.navigation {
    background: white;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-menu {
    display: flex;
    list-style: none;
    justify-content: center;
    padding: 1rem 0;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.nav-menu a:hover,
.nav-menu a.active {
    background: var(--primary-color);
    color: white;
}

/* Main Content */
.main-content {
    padding: 3rem 0;
    min-height: calc(100vh - 300px);
}

/* Welcome Section */
.welcome-section {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    margin-bottom: 3rem;
    box-shadow: var(--shadow);
}

.welcome-section h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* Reports Section */
.reports-section {
    margin-bottom: 3rem;
}

.reports-section h2 {
    margin-bottom: 1.5rem;
    color: var(--dark-color);
}

.reports-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
}

.report-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-decoration: none;
    color: var(--dark-color);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.report-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.report-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.report-header h3 {
    color: var(--primary-color);
    font-size: 1.25rem;
}

.report-badge {
    background: var(--accent-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.report-badge.highlight {
    background: var(--warning-color);
}

.report-description {
    color: #6b7280;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.report-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.875rem;
    color: #6b7280;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.report-status {
    color: var(--accent-color);
    font-weight: 500;
}

/* Quick Links */
.quick-links {
    margin-bottom: 3rem;
}

.quick-links h2 {
    margin-bottom: 1.5rem;
    color: var(--dark-color);
}

.links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.quick-link-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    text-decoration: none;
    color: var(--dark-color);
    transition: var(--transition);
    box-shadow: var(--shadow);
    border: 2px solid transparent;
}

.quick-link-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.link-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.quick-link-card h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.quick-link-card p {
    color: #6b7280;
    font-size: 0.875rem;
}

/* Stats Section */
.stats-section {
    margin-bottom: 3rem;
}

.stats-section h2 {
    margin-bottom: 1.5rem;
    color: var(--dark-color);
}

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

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: #6b7280;
    font-size: 0.875rem;
}

/* Footer */
.footer {
    background: var(--dark-color);
    color: white;
    padding: 2rem 0;
    margin-top: 4rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.footer-info h4 {
    margin-bottom: 0.5rem;
}

.footer-info p {
    opacity: 0.8;
    font-size: 0.875rem;
}

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

.footer-links a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: var(--transition);
}

.footer-links a:hover {
    opacity: 1;
}

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    opacity: 0.7;
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-menu {
        flex-wrap: wrap;
        gap: 0.5rem;
        padding: 0.5rem;
    }
    
    .reports-grid {
        grid-template-columns: 1fr;
    }
    
    .links-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}