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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.6;
}

/* Header */
.dashboard-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-left .logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.header-left .logo i {
    font-size: 1.5rem;
}

.header-left .logo h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
}

.user-name {
    font-weight: 500;
}

.user-menu-btn {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background-color 0.3s;
}

.user-menu-btn:hover {
    background-color: rgba(255,255,255,0.1);
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    color: #333;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    min-width: 150px;
    display: none;
    z-index: 1001;
}

.user-dropdown.show {
    display: block;
}

.user-dropdown a {
    display: block;
    padding: 0.75rem 1rem;
    text-decoration: none;
    color: #333;
    transition: background-color 0.3s;
}

.user-dropdown a:hover {
    background-color: #f8f9fa;
}

.user-dropdown a i {
    margin-right: 0.5rem;
    width: 16px;
}

/* Dashboard Container */
.dashboard-container {
    display: flex;
    min-height: calc(100vh - 80px);
}

/* Sidebar */
.sidebar {
    width: 250px;
    background: white;
    box-shadow: 2px 0 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 80px;
    height: calc(100vh - 80px);
    overflow-y: auto;
}

.sidebar-nav ul {
    list-style: none;
    padding: 1rem 0;
}

.nav-item a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    text-decoration: none;
    color: #666;
    transition: all 0.3s;
    border-left: 3px solid transparent;
}

.nav-item a:hover,
.nav-item.active a {
    background-color: #f8f9fa;
    color: #667eea;
    border-left-color: #667eea;
}

.nav-item a i {
    width: 20px;
    text-align: center;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
}

.content-section {
    display: none;
}

.content-section.active {
    display: block;
}

.section-header {
    margin-bottom: 2rem;
}

.section-header h2 {
    font-size: 2rem;
    color: #333;
    margin-bottom: 0.5rem;
}

.section-header p {
    color: #666;
    font-size: 1.1rem;
}

.section-header .btn {
    float: right;
    margin-top: -3rem;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: transform 0.3s, box-shadow 0.3s;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.stat-content h3 {
    font-size: 1.8rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 0.25rem;
}

.stat-content p {
    color: #666;
    font-size: 0.9rem;
}

/* Quick Actions */
.quick-actions {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.quick-actions h3 {
    margin-bottom: 1rem;
    color: #333;
}

.action-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.action-btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s;
}

.action-btn.primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.action-btn.primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.action-btn.secondary {
    background: #f8f9fa;
    color: #666;
    border: 1px solid #e9ecef;
}

.action-btn.secondary:hover {
    background: #e9ecef;
    color: #333;
}

/* Recent Activity */
.recent-activity {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.recent-activity h3 {
    margin-bottom: 1rem;
    color: #333;
}

.activity-list {
    max-height: 300px;
    overflow-y: auto;
}

.activity-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid #f1f3f4;
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-item i {
    color: #667eea;
    width: 20px;
}

.activity-item span {
    flex: 1;
    color: #333;
}

.activity-item time {
    color: #666;
    font-size: 0.9rem;
}

/* Client Filters */
.client-filters {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 1.5rem;
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    align-items: end;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.filter-group label {
    font-weight: 500;
    color: #333;
    font-size: 0.9rem;
}

.filter-group select,
.filter-group input {
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 0.9rem;
    min-width: 150px;
}

.filter-group input[type="text"] {
    min-width: 200px;
}

/* Clients Table */
.clients-table-container {
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    overflow: hidden;
}

.clients-table {
    width: 100%;
    border-collapse: collapse;
}

.clients-table th,
.clients-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #f1f3f4;
}

.clients-table th {
    background: #f8f9fa;
    font-weight: 600;
    color: #333;
}

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

.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
}

.status-badge.active {
    background: #d4edda;
    color: #155724;
}

.status-badge.inactive {
    background: #f8d7da;
    color: #721c24;
}

.status-badge.revoked {
    background: #fff3cd;
    color: #856404;
}

.client-actions {
    display: flex;
    gap: 0.5rem;
}

.client-actions .btn {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
}

/* Server Grid */
.server-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.server-card {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.server-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.server-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.server-header h3 {
    color: #333;
    font-size: 1.2rem;
}

.server-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    font-weight: 500;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #dc3545;
}

.server-status.online .status-dot {
    background: #28a745;
}

.server-status.online {
    color: #28a745;
}

.server-status.offline {
    color: #dc3545;
}

.server-info {
    margin-bottom: 1rem;
}

.server-info p {
    margin-bottom: 0.5rem;
    color: #666;
}

.server-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* Server Logs */
.server-logs {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.server-logs h3 {
    margin-bottom: 1rem;
    color: #333;
}

.logs-controls {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    align-items: center;
}

.logs-controls select {
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 6px;
}

.logs-container {
    background: #1e1e1e;
    color: #f8f8f2;
    padding: 1rem;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    max-height: 400px;
    overflow-y: auto;
}

.logs-content {
    white-space: pre-wrap;
    word-break: break-all;
}

/* Protocols Grid */
.protocols-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
}

.protocol-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.protocol-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.protocol-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.protocol-icon {
    width: 50px;
    height: 50px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.protocol-header h3 {
    color: #333;
    font-size: 1.3rem;
}

.protocol-description {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.protocol-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.protocol-detail {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid #f1f3f4;
}

.protocol-detail:last-child {
    border-bottom: none;
}

.protocol-features {
    margin-bottom: 1.5rem;
}

.protocol-features h4 {
    color: #333;
    margin-bottom: 0.75rem;
    font-size: 1rem;
}

.protocol-features ul {
    list-style: none;
    padding: 0;
}

.protocol-features li {
    padding: 0.25rem 0;
    color: #666;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.protocol-features li::before {
    content: '✓';
    color: #28a745;
    font-weight: bold;
}

/* Usage Stats */
.usage-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.5rem;
}

.usage-card {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.usage-card h3 {
    margin-bottom: 1rem;
    color: #333;
}

.usage-chart {
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f8f9fa;
    border-radius: 8px;
    color: #666;
}

.time-range-selector {
    float: right;
    margin-top: -3rem;
}

.time-range-selector select {
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 6px;
}

/* Security Cards */
.security-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.security-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.security-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.security-card h3 {
    color: #333;
    margin-bottom: 0.5rem;
}

.security-card p {
    color: #666;
    margin-bottom: 1.5rem;
}

.security-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s;
    font-size: 0.9rem;
}

.btn.primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn.primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn.secondary {
    background: #f8f9fa;
    color: #666;
    border: 1px solid #e9ecef;
}

.btn.secondary:hover {
    background: #e9ecef;
    color: #333;
}

.btn.danger {
    background: #dc3545;
    color: white;
}

.btn.danger:hover {
    background: #c82333;
    transform: translateY(-1px);
}

.btn.small {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid #f1f3f4;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    color: #333;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    color: #666;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background-color 0.3s;
}

.modal-close:hover {
    background: #f8f9fa;
}

.modal-body {
    padding: 1.5rem;
}

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #333;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2rem;
}

/* Alert Styles */
.alert-container {
    position: fixed;
    top: 100px;
    right: 20px;
    z-index: 3000;
    max-width: 400px;
}

.alert {
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    padding: 1rem 1.5rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    border-left: 4px solid #667eea;
    animation: slideIn 0.3s ease-out;
}

.alert.success {
    border-left-color: #28a745;
}

.alert.error {
    border-left-color: #dc3545;
}

.alert.warning {
    border-left-color: #ffc107;
}

.alert-icon {
    font-size: 1.2rem;
}

.alert.success .alert-icon {
    color: #28a745;
}

.alert.error .alert-icon {
    color: #dc3545;
}

.alert.warning .alert-icon {
    color: #ffc107;
}

.alert-content {
    flex: 1;
}

.alert-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: #333;
}

.alert-message {
    color: #666;
    font-size: 0.9rem;
}

.alert-close {
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    color: #666;
    padding: 0.25rem;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Loading Styles */
.loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255,255,255,0.9);
    z-index: 4000;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 1rem;
}

.loading-overlay.show {
    display: flex;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-row .loading-spinner {
    width: 20px;
    height: 20px;
    border-width: 2px;
    margin-right: 0.5rem;
    display: inline-block;
}

/* Responsive Design */
@media (max-width: 768px) {
    .dashboard-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        height: auto;
        position: static;
    }
    
    .main-content {
        padding: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .server-grid {
        grid-template-columns: 1fr;
    }
    
    .protocols-grid {
        grid-template-columns: 1fr;
    }
    
    .usage-stats {
        grid-template-columns: 1fr;
    }
    
    .security-cards {
        grid-template-columns: 1fr;
    }
    
    .client-filters {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-group {
        width: 100%;
    }
    
    .filter-group select,
    .filter-group input {
        min-width: auto;
        width: 100%;
    }
    
    .section-header .btn {
        float: none;
        margin-top: 1rem;
        display: block;
        width: 100%;
    }
    
    .time-range-selector {
        float: none;
        margin-top: 1rem;
        margin-bottom: 1rem;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .action-btn {
        justify-content: center;
    }
    
    .server-actions {
        justify-content: center;
    }
    
    .security-actions {
        justify-content: center;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .alert-container {
        left: 20px;
        right: 20px;
        max-width: none;
    }
}

@media (max-width: 480px) {
    .dashboard-header {
        padding: 1rem;
    }
    
    .header-left .logo h1 {
        font-size: 1.2rem;
    }
    
    .main-content {
        padding: 0.5rem;
    }
    
    .section-header h2 {
        font-size: 1.5rem;
    }
    
    .modal-content {
        width: 95%;
    }
    
    .modal-header,
    .modal-body {
        padding: 1rem;
    }
}