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

:root {
    --primary-color: #2563eb;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --dark-bg: #0f172a;
    --card-bg: #1e293b;
    --border-color: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Navbar */
.navbar {
    background: var(--card-bg);
    border-bottom: 2px solid var(--primary-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.navbar-menu {
    display: flex;
    gap: 1.5rem;
}

.nav-item {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    transition: all 0.2s;
}

.nav-item:hover {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
}

.nav-item.active {
    background: var(--primary-color);
    color: white;
}

.nav-item.logout {
    color: var(--danger-color);
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

/* Login Page */
.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--dark-bg) 0%, #1e293b 100%);
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 2rem;
}

.login-box {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 0.75rem;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
}

.login-box h1 {
    text-align: center;
    color: var(--primary-color);
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.login-box h2 {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.25rem;
    margin-bottom: 2rem;
    font-weight: normal;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    color: var(--text-primary);
    font-size: 1rem;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.375rem;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: #1d4ed8;
}

.btn-secondary {
    background: var(--secondary-color);
    color: white;
}

.btn-secondary:hover {
    background: #475569;
}

.btn-info {
    background: var(--info-color);
    color: white;
}

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 0.375rem;
    margin-bottom: 1rem;
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--danger-color);
    color: #fca5a5;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success-color);
    color: #6ee7b7;
}

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

.stat-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stat-icon {
    font-size: 2.5rem;
}

.stat-icon.online {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.stat-content h3 {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--text-primary);
}

/* Security Alerts */
.security-alerts {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.alert-card {
    background: rgba(245, 158, 11, 0.05);
    border: 1px solid rgba(245, 158, 11, 0.3);
    padding: 1.5rem;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.alert-icon {
    font-size: 2.5rem;
}

.alert-content h3 {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.alert-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--text-primary);
}

.alert-value.warning {
    color: var(--warning-color);
    animation: pulse 2s infinite;
}

.alert-note {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

/* Container Stats */
.container-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.container-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
}

.container-card h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.container-info {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.metric {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.metric .label {
    color: var(--text-secondary);
}

.metric .value {
    font-weight: 600;
    color: var(--text-primary);
}

.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 0.25rem;
    font-size: 0.875rem;
    text-transform: capitalize;
}

/* Status Indicators */
.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.status-dot {
    display: inline-block;
    width: 0.75rem;
    height: 0.75rem;
    border-radius: 50%;
}

.status-dot.online {
    background: var(--success-color);
    box-shadow: 0 0 10px var(--success-color);
}

.status-dot.offline {
    background: var(--secondary-color);
}

/* Charts */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.chart-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
}

.chart-card h3 {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

/* Activity Section */
.activity-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.recent-clients, .recent-activity {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
}

.recent-clients h3, .recent-activity h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

/* Tables */
.table-container {
    overflow-x: auto;
    margin-bottom: 1rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card-bg);
}

thead {
    background: rgba(37, 99, 235, 0.1);
}

th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 2px solid var(--border-color);
}

td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

tbody tr:hover {
    background: rgba(37, 99, 235, 0.05);
}

/* Badges */
.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 0.25rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.badge-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

.badge-info {
    background: rgba(59, 130, 246, 0.1);
    color: var(--info-color);
}

.badge-secondary {
    background: rgba(100, 116, 139, 0.1);
    color: var(--secondary-color);
}

/* Code */
code {
    background: var(--dark-bg);
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    color: var(--info-color);
}

/* Activity List */
.activity-list {
    max-height: 400px;
    overflow-y: auto;
}

.activity-item {
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    background: var(--dark-bg);
    border-radius: 0.375rem;
    border-left: 3px solid var(--info-color);
}

.activity-item.warning {
    border-left-color: var(--warning-color);
}

.activity-item.error {
    border-left-color: var(--danger-color);
}

.activity-item .time {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-right: 1rem;
}

.activity-item .category {
    background: rgba(59, 130, 246, 0.1);
    color: var(--info-color);
    padding: 0.125rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    margin-right: 1rem;
}

.activity-item .message {
    color: var(--text-secondary);
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.page-header h2 {
    font-size: 2rem;
    color: var(--text-primary);
}

.header-actions {
    display: flex;
    gap: 1rem;
}

/* Filters */
.filters {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.filter-btn {
    padding: 0.5rem 1rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.filter-btn:hover {
    background: rgba(37, 99, 235, 0.1);
    border-color: var(--primary-color);
}

.filter-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Search Input */
.search-input {
    padding: 0.5rem 1rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    color: var(--text-primary);
    min-width: 250px;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Select Input */
.select-input {
    padding: 0.5rem 1rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    color: var(--text-primary);
    cursor: pointer;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
}

.modal-content {
    background: var(--card-bg);
    margin: 5% auto;
    padding: 2rem;
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    width: 80%;
    max-width: 800px;
    max-height: 80vh;
    overflow-y: auto;
}

.close {
    color: var(--text-muted);
    float: right;
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
}

.close:hover {
    color: var(--text-primary);
}

/* Stats Bar */
.stats-bar {
    display: flex;
    gap: 2rem;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Log Rows */
.log-error {
    background: rgba(239, 68, 68, 0.05);
}

.log-warning {
    background: rgba(245, 158, 11, 0.05);
}

.log-message {
    max-width: 600px;
    word-wrap: break-word;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.text-muted {
    color: var(--text-muted);
}

.nowrap {
    white-space: nowrap;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
    margin-top: 3rem;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    .navbar {
        flex-direction: column;
        gap: 1rem;
    }

    .navbar-menu {
        flex-wrap: wrap;
        justify-content: center;
    }

    .stats-grid,
    .security-alerts,
    .container-stats,
    .charts-grid,
    .activity-section {
        grid-template-columns: 1fr;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .modal-content {
        width: 95%;
        margin: 10% auto;
    }
}