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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: #f8fafc;
    color: #1e293b;
    line-height: 1.5;
}

/* CSS Variables for Theme */
:root {
    --primary-color: #3b82f6;
    --primary-dark: #2563eb;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --background-color: #f8fafc;
    --surface-color: #ffffff;
    --border-color: #e2e8f0;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --sidebar-width: 280px;
    --header-height: 64px;
    --border-radius: 8px;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

/* Header Styles */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.sidebar-toggle {
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    transition: all 0.2s ease;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    font-size: 1.125rem;
    color: var(--primary-color);
}

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

.header-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.search-bar {
    position: relative;
    display: flex;
    align-items: center;
}

.search-bar i {
    position: absolute;
    left: 0.75rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.search-bar input {
    padding: 0.5rem 0.75rem 0.5rem 2.25rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--background-color);
    font-size: 0.875rem;
    width: 320px;
    transition: all 0.2s ease;
}

.search-bar input:focus {
    outline: none;
    border-color: var(--primary-color);
    background-color: var(--surface-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

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

.notification-bell {
    position: relative;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    transition: all 0.2s ease;
}

.notification-bell:hover {
    background-color: var(--background-color);
}

.notification-count {
    position: absolute;
    top: 0;
    right: 0;
    background-color: var(--error-color);
    color: white;
    font-size: 0.75rem;
    padding: 0.125rem 0.25rem;
    border-radius: 50px;
    min-width: 1.25rem;
    text-align: center;
    line-height: 1;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.2s ease;
}

.user-menu:hover {
    background-color: var(--background-color);
}

.user-avatar {
    width: 2rem;
    height: 2rem;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.875rem;
}

.user-info {
    display: flex;
    flex-direction: column;
}

.user-name {
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--text-primary);
}

.user-role {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Sidebar Styles */
.sidebar {
    position: fixed;
    left: 0;
    top: var(--header-height);
    width: var(--sidebar-width);
    height: calc(100vh - var(--header-height));
    background-color: var(--surface-color);
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    z-index: 100;
    transition: transform 0.3s ease;
}

.sidebar.collapsed {
    transform: translateX(-100%);
}

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

.nav-item {
    margin: 0.25rem 0;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
    border-right: 3px solid transparent;
}

.nav-link:hover {
    color: var(--primary-color);
    background-color: rgba(59, 130, 246, 0.05);
}

.nav-item.active .nav-link {
    color: var(--primary-color);
    background-color: rgba(59, 130, 246, 0.1);
    border-right-color: var(--primary-color);
}

.nav-link i {
    font-size: 1.125rem;
    width: 1.25rem;
    text-align: center;
}

.sidebar-footer {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.status-dot {
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
}

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

/* Main Content Styles */
.main-content {
    margin-left: var(--sidebar-width);
    margin-top: var(--header-height);
    padding: 2rem;
    min-height: calc(100vh - var(--header-height));
    transition: margin-left 0.3s ease;
}

.sidebar.collapsed ~ .main-content {
    margin-left: 0;
}

/* Page Styles */
.page {
    display: none;
}

.page.active {
    display: block;
}

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

.page-header h1 {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-primary);
}

.page-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 500;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

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

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

.btn-outline {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    background-color: var(--background-color);
}

.btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border: none;
    background: none;
    color: var(--text-secondary);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.time-filter {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--surface-color);
    font-size: 0.875rem;
    cursor: pointer;
}

/* Metrics Grid */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.metric-card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

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

.metric-header h3 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.metric-header i {
    color: var(--text-secondary);
    font-size: 1.25rem;
}

.metric-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.metric-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.metric-trend {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.metric-trend.positive {
    color: var(--success-color);
}

.metric-trend.negative {
    color: var(--error-color);
}

.metric-trend.warning {
    color: var(--warning-color);
}

/* Dashboard Charts */
.dashboard-charts {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.chart-container {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.chart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.chart-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.chart-legend {
    display: flex;
    gap: 1rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.legend-color {
    width: 0.75rem;
    height: 0.75rem;
    border-radius: 2px;
}

.legend-color.stamps { background-color: var(--primary-color); }
.legend-color.redemptions { background-color: var(--success-color); }
.legend-color.swaps { background-color: var(--warning-color); }

.chart-placeholder {
    height: 300px;
    background-color: var(--background-color);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

/* Hardware Status Grid */
.hardware-status-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.status-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background-color: var(--background-color);
    border-radius: var(--border-radius);
}

.status-indicator {
    width: 0.75rem;
    height: 0.75rem;
    border-radius: 50%;
}

.status-indicator.online { background-color: var(--success-color); }
.status-indicator.warning { background-color: var(--warning-color); }
.status-indicator.offline { background-color: var(--error-color); }
.status-indicator.maintenance { background-color: var(--secondary-color); }

.status-info {
    display: flex;
    flex-direction: column;
}

.status-count {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.status-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Activity Section */
.activity-section {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.activity-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.activity-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.view-all-link {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
}

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

.activity-list {
    padding: 1.5rem;
}

.activity-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

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

.activity-icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: white;
    flex-shrink: 0;
}

.activity-icon.merchant { background-color: var(--primary-color); }
.activity-icon.hardware { background-color: var(--warning-color); }
.activity-icon.support { background-color: var(--error-color); }
.activity-icon.treasury { background-color: var(--success-color); }

.activity-icon::before {
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
}

.activity-icon.merchant::before { content: '\f54e'; }
.activity-icon.hardware::before { content: '\f2db'; }
.activity-icon.support::before { content: '\f3c1'; }
.activity-icon.treasury::before { content: '\f51e'; }

.activity-content {
    flex: 1;
}

.activity-title {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.activity-time {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Filters Bar */
.filters-bar {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.filter-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.filter-group select {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--surface-color);
    font-size: 0.875rem;
    cursor: pointer;
}

.search-filter {
    position: relative;
    margin-left: auto;
}

.search-filter i {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.search-filter input {
    padding: 0.5rem 0.75rem 0.5rem 2.25rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--surface-color);
    font-size: 0.875rem;
    width: 250px;
}

/* Data Table */
.data-table {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.5rem;
}

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

.data-table th {
    background-color: var(--background-color);
    padding: 1rem;
    text-align: left;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

.data-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.data-table tr:last-child td {
    border-bottom: none;
}

.data-table tr:hover {
    background-color: var(--background-color);
}

/* Merchant Info */
.merchant-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.merchant-avatar {
    width: 2.5rem;
    height: 2.5rem;
    background-color: var(--primary-color);
    color: white;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.merchant-name {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.125rem;
}

.merchant-email {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Status Badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

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

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

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

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

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 0.25rem;
}

/* Device Info */
.device-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.device-icon {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

.device-id {
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
}

/* Fleet Overview */
.fleet-overview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.fleet-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.fleet-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
    flex-shrink: 0;
}

.fleet-icon.online { background-color: var(--success-color); }
.fleet-icon.warning { background-color: var(--warning-color); }
.fleet-icon.offline { background-color: var(--error-color); }
.fleet-icon.maintenance { background-color: var(--secondary-color); }

.fleet-stats {
    display: flex;
    flex-direction: column;
}

.fleet-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.fleet-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Pagination */
.pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.pagination-info {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.pagination-controls {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.btn-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    border: 1px solid var(--border-color);
    background-color: var(--surface-color);
    color: var(--text-secondary);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.875rem;
}

.btn-pagination:hover:not(:disabled) {
    background-color: var(--background-color);
    color: var(--text-primary);
}

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

.btn-pagination:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Coming Soon Pages */
.coming-soon {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 4rem 2rem;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.coming-soon i {
    font-size: 4rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.coming-soon h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.coming-soon p {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 400px;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .dashboard-charts {
        grid-template-columns: 1fr;
    }
    
    .hardware-status-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .header-right .search-bar {
        display: none;
    }
    
    .filters-bar {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .search-filter {
        margin-left: 0;
    }
    
    .search-filter input {
        width: 100%;
    }
    
    .page-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .page-actions {
        justify-content: center;
    }
    
    .data-table {
        overflow-x: auto;
    }
    
    .pagination {
        flex-direction: column;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .metrics-grid {
        grid-template-columns: 1fr;
    }
    
    .fleet-overview {
        grid-template-columns: 1fr;
    }
    
    .metric-card {
        padding: 1rem;
    }
    
    .fleet-card {
        padding: 1rem;
    }
}