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

:root {
    --primary-color: #3b82f6;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --bg-color: #f5f7fa;
    --card-bg: #ffffff;
    --border-color: #e5e7eb;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --sidebar-bg: #ffffff;
    --sidebar-active: #eff6ff;
    --sidebar-hover: #f3f4f6;
    --header-bg: #ffffff;
}

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

.app-container {
    min-height: 100vh;
}

.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
}

.login-box {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 40px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h1 {
    color: var(--text-primary);
    font-size: 24px;
    margin-bottom: 8px;
}

.login-header p {
    color: var(--text-secondary);
    font-size: 14px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.2s;
}

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

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s;
}

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

.btn-primary:hover {
    background-color: #2563eb;
}

.btn-block {
    width: 100%;
}

.login-error {
    color: var(--danger-color);
    font-size: 14px;
    margin-top: 15px;
    text-align: center;
}

.main-app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.top-bar {
    background-color: var(--header-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 65px;
    flex-shrink: 0;
}

.logo-section h1 {
    font-size: 20px;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.logo-section .sub-title {
    font-size: 12px;
    color: var(--text-muted);
}

.top-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.connection-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--text-muted);
}

.status-dot.online {
    background-color: var(--success-color);
}

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

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-info span {
    font-size: 14px;
    color: var(--text-secondary);
}

.logout-btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
}

.logout-btn:hover {
    background-color: var(--sidebar-hover);
    color: var(--danger-color);
    border-color: var(--danger-color);
}

.content-wrapper {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.sidebar {
    width: 200px;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    padding: 16px 0;
    overflow-y: auto;
    flex-shrink: 0;
}

.nav-menu {
    list-style: none;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background-color: var(--sidebar-hover);
    color: var(--text-primary);
}

.nav-item.active {
    background-color: var(--sidebar-active);
    color: var(--primary-color);
    border-left-color: var(--primary-color);
}

.nav-icon {
    font-size: 18px;
    margin-right: 10px;
}

.main-content {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
}

.page {
    display: none;
}

.page.active {
    display: block;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.page-header h2 {
    font-size: 20px;
    color: var(--text-primary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.search-box {
    display: flex;
    gap: 8px;
}

.search-box input {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 13px;
    width: 200px;
}

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

.filter-select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 13px;
    color: var(--text-primary);
    background-color: white;
    cursor: pointer;
}

.filter-select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.stats-row {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    flex: 1;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    min-width: 0;
}

.stat-card.stat-success {
    border-color: rgba(16, 185, 129, 0.2);
    background-color: rgba(16, 185, 129, 0.05);
}

.stat-card.stat-warning {
    border-color: rgba(245, 158, 11, 0.2);
    background-color: rgba(245, 158, 11, 0.05);
}

.stat-value {
    font-size: 28px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 13px;
    color: var(--text-secondary);
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 20px;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h3 {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
}

.view-all {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 13px;
}

.view-all:hover {
    text-decoration: underline;
}

.card-body {
    padding: 16px 20px;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.data-table th,
.data-table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background-color: #f9fafb;
    color: var(--text-secondary);
    font-weight: 500;
}

.data-table td {
    color: var(--text-primary);
}

.data-table tr:hover {
    background-color: #f9fafb;
}

.status-badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

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

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

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

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

.action-btn {
    padding: 4px 10px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    margin-right: 6px;
    transition: all 0.2s;
}

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

.action-btn.delete {
    background-color: var(--danger-color);
    color: white;
}

.action-btn:hover {
    opacity: 0.8;
}

.log-container {
    max-height: 500px;
    overflow-y: auto;
    background-color: #f9fafb;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 15px;
    font-family: 'Courier New', monospace;
    font-size: 12px;
}

.log-entry {
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}

.log-entry:last-child {
    border-bottom: none;
}

.log-timestamp {
    color: var(--text-muted);
    margin-right: 10px;
}

.log-level {
    font-weight: bold;
    margin-right: 10px;
    font-size: 11px;
}

.log-level.INFO {
    color: var(--primary-color);
}

.log-level.WARNING {
    color: var(--warning-color);
}

.log-level.ERROR {
    color: var(--danger-color);
}

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

.log-message {
    color: var(--text-primary);
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    width: 100%;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
}

.modal-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 16px;
    font-weight: 500;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 24px;
    cursor: pointer;
    line-height: 1;
}

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

.modal-body {
    padding: 20px;
}

.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 15px 20px;
    display: none;
    z-index: 1001;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    font-size: 14px;
}

.toast.active {
    display: block;
}

.toast.success {
    border-left: 4px solid var(--success-color);
}

.toast.error {
    border-left: 4px solid var(--danger-color);
}

.toast.warning {
    border-left: 4px solid var(--warning-color);
}

.toast.info {
    border-left: 4px solid var(--primary-color);
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

.detail-grid div {
    padding: 8px;
    background-color: #f9fafb;
    border-radius: 4px;
    font-size: 13px;
}

.detail-grid strong {
    color: var(--text-secondary);
    margin-right: 8px;
}

@media (max-width: 768px) {
    .sidebar {
        width: 60px;
    }
    
    .nav-item span:not(.nav-icon) {
        display: none;
    }
    
    .page-header {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }
    
    .header-actions {
        flex-wrap: wrap;
    }
    
    .search-box input {
        width: 150px;
    }
    
    .stats-row {
        flex-wrap: wrap;
    }
    
    .stat-card {
        width: calc(50% - 8px);
    }
    
    .grid-container {
        grid-template-columns: 1fr;
    }
    
    .detail-grid {
        grid-template-columns: 1fr;
    }
}