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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: #f5f6fa;
    padding-top: 60px; /* For fixed nav */
}

/* Navigation Styles */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: #2c3e50;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    z-index: 1000;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    height: 60px;
}

.nav-brand {
    display: flex;
    align-items: center;
    color: white;
    font-size: 18px;
}

.nav-menu {
    display: flex;
    gap: 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 20px 20px;
    color: #ecf0f1;
    text-decoration: none;
    transition: all 0.3s;
    position: relative;
}

.nav-item:hover {
    background: #34495e;
    color: white;
}

.nav-item.active {
    background: #3498db;
    color: white;
}

.nav-item.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: #e74c3c;
}

.nav-icon {
    font-size: 20px;
}

.nav-title {
    font-size: 14px;
    font-weight: 500;
}

.nav-user {
    color: #ecf0f1;
    font-size: 14px;
}

/* Container Styles */
.container {
    max-width: 1400px;
    margin: 20px auto;
    padding: 0 20px;
}

/* Section Styles */
.section {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.header {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

h1 {
    color: #2c3e50;
    margin-bottom: 10px;
}

h2 {
    color: #34495e;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid #3498db;
}

/* Table Styles */
table {
    width: 100%;
    border-collapse: collapse;
}

th {
    background: #f8f9fa;
    padding: 12px;
    text-align: left;
    font-weight: 600;
    color: #2c3e50;
    border-bottom: 2px solid #dee2e6;
}

td {
    padding: 10px 12px;
    border-bottom: 1px solid #dee2e6;
}

tr:hover {
    background: #f8f9fa;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr !important;
    }
}

/* Print Styles */
@media print {
    .main-nav {
        display: none;
    }
    
    body {
        padding-top: 0;
    }
}