body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #eef1f5;
    margin: 0;
    padding: 0;
    color: #333;
    line-height: 1.6;
}

.navbar {
    background-color: #2c3e50;
    color: #ffffff;
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}
.navbar .logo {
    font-size: 1.6em;
    font-weight: bold;
    color: #ffffff;
    text-decoration: none;
}
.navbar .nav-links {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}
.navbar .nav-links li {
    margin-left: 25px;
}
.navbar .nav-links a {
    color: #ffffff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}
.navbar .nav-links a:hover {
    color: #3498db;
}

.container {
    max-width: 960px;
    margin: 40px auto;
    padding: 30px;
    background-color: #ffffff;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    text-align: center;
}

h2 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 2.2em;
}

.welcome-message {
    font-size: 1.2em;
    color: #555;
    margin-bottom: 30px;
}

.summary-cards {
    display: flex;
    justify-content: center;
    gap: 25px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}
.card {
    background-color: #f8f9fa;
    padding: 25px 35px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    min-width: 200px;
    flex: 1;
}
.card h4 {
    color: #34495e;
    margin-top: 0;
    font-size: 1.1em;
}
.card p {
    font-size: 2.5em;
    color: #28a745; /* Green for positive metrics */
    margin: 10px 0 0;
    font-weight: bold;
}

.action-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
    flex-wrap: wrap;
}
.action-buttons a {
    display: inline-block;
    padding: 12px 25px;
    background-color: #3498db;
    color: white;
    text-decoration: none;
    border-radius: 6px;
    transition: background-color 0.3s ease, transform 0.2s ease;
    font-weight: 500;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}
.action-buttons a:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
}
.action-buttons a.admin-link {
    background-color: #e67e22; /* Orange for admin */
}
.action-buttons a.admin-link:hover {
    background-color: #d35400;
}
.action-buttons a.logout-link {
    background-color: #e74c3c; /* Red for logout */
}
.action-buttons a.logout-link:hover {
    background-color: #c0392b;
}

.flash-messages {
    list-style: none;
    padding: 0;
    margin: 20px 0;
}
.flash-messages li {
    padding: 12px;
    margin-bottom: 10px;
    border-radius: 6px;
    font-size: 1em;
}
.flash-messages .success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}
.flash-messages .error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}
.flash-messages .info {
    background-color: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}
.flash-messages .warning {
    background-color: #fff3cd;
    color: #856404;
    border: 1px solid #ffeeba;
}

/* Admin Dashboard Specific Styles */
.admin-container {
    max-width: 1200px; /* Increased max-width */
    margin: 40px auto;
    padding: 30px;
    background-color: #ffffff;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}
.admin-container h2 {
    text-align: center;
    color: #2c3e50;
    font-size: 2.2em;
    margin-bottom: 30px;
}
.admin-summary-cards {
    display: flex;
    justify-content: center;
    gap: 25px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}
.admin-card {
    background-color: #f8f9fa;
    padding: 25px 35px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    min-width: 200px;
    flex: 1;
}
.admin-card h4 {
    color: #34495e;
    margin-top: 0;
    font-size: 1.1em;
}
.admin-card p {
    font-size: 2.5em;
    color: #007bff; /* Blue for admin metrics */
    margin: 10px 0 0;
    font-weight: bold;
}

.user-table, .logs-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    margin-bottom: 30px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    border-radius: 8px;
    overflow: hidden; /* Ensures rounded corners on table */
}
.user-table th, .user-table td,
.logs-table th, .logs-table td {
    border: 1px solid #ddd;
    padding: 12px;
    text-align: left;
}
.user-table th, .logs-table th {
    background-color: #e9ecef;
    font-weight: bold;
    color: #495057;
    text-transform: uppercase;
    font-size: 0.9em;
}
.user-table tr:nth-child(even), .logs-table tr:nth-child(even) {
    background-color: #f6f6f8;
}
.user-table tr:hover, .logs-table tr:hover {
    background-color: #eef1f5;
}
.action-link {
    color: #3498db;
    text-decoration: none;
    margin-right: 10px;
    transition: color 0.3s ease;
}
.action-link:hover {
    color: #2980b9;
    text-decoration: underline;
}
.delete-link {
    color: #e74c3c;
}
.delete-link:hover {
    color: #c0392b;
}

.back-link {
    display: inline-block;
    margin-top: 30px;
    padding: 10px 20px;
    background-color: #6c757d;
    color: white;
    text-decoration: none;
    border-radius: 6px;
    transition: background-color 0.3s ease;
}
.back-link:hover {
    background-color: #5a6268;
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        padding: 15px;
    }
    .navbar .nav-links {
        margin-top: 15px;
        flex-direction: column;
        gap: 10px;
        align-items: center;
    }
    .navbar .nav-links li {
        margin-left: 0;
    }
    .container, .admin-container {
        margin: 20px auto;
        padding: 20px;
    }
    .summary-cards, .admin-summary-cards {
        flex-direction: column;
        align-items: center;
    }
    .card, .admin-card {
        width: 100%;
        margin: 10px 0;
    }
    .action-buttons {
        flex-direction: column;
        gap: 15px;
    }
    .action-buttons a {
        width: 80%;
    }
    .user-table, .logs-table {
        font-size: 0.9em;
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }
}