/* assets/css/admin.css - Complete Admin Dashboard Stylesheet */

/* CSS Variables */
:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --sidebar-width: 260px;
    --header-height: 70px;
    --border-radius: 8px;
    --box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    --box-shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
    --transition: all 0.3s ease;
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* Global Reset and Base Styles */
* {
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    font-size: 14px;
    line-height: 1.6;
    color: #333;
    background-color: var(--light-color);
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #2c3e50;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

.text-gradient {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.text-primary-custom {
    color: var(--primary-color) !important;
}

.text-muted {
    color: #6c757d !important;
}

/* Layout Components */
.main-content {
    margin-left: var(--sidebar-width);
    transition: var(--transition);
    min-height: 100vh;
    background-color: var(--light-color);
}

.main-content.expanded {
    margin-left: 0;
}

.container-fluid {
    padding: 1.5rem;
}

/* Sidebar Styles */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    width: var(--sidebar-width);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    overflow-y: auto;
    transition: var(--transition);
    z-index: 1000;
    box-shadow: 2px 0 10px rgba(0,0,0,0.1);
}

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

.sidebar-brand {
    padding: 1.5rem 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    text-align: center;
    background: rgba(0,0,0,0.1);
}

.sidebar-brand h4 {
    margin: 0;
    font-weight: 700;
    color: white;
    font-size: 1.4rem;
}

.sidebar-brand small {
    font-size: 0.8rem;
    opacity: 0.8;
}

/* Navigation Styles */
.nav-link {
    color: rgba(255,255,255,0.8) !important;
    padding: 0.8rem 1rem;
    border-radius: 0;
    transition: var(--transition);
    border-left: 3px solid transparent;
    display: flex;
    align-items: center;
    text-decoration: none;
    margin: 0.2rem 0;
}

.nav-link:hover,
.nav-link.active {
    color: white !important;
    background: rgba(255,255,255,0.1);
    border-left-color: rgba(255,255,255,0.8);
    transform: translateX(2px);
}

.nav-link i {
    width: 20px;
    margin-right: 10px;
    text-align: center;
    font-size: 1rem;
}

.nav-link .float-end {
    margin-left: auto;
    transition: var(--transition);
}

.nav-link[aria-expanded="true"] .float-end {
    transform: rotate(180deg);
}

/* Submenu Styles */
.collapse .nav-link {
    padding: 0.6rem 1rem 0.6rem 2.5rem;
    font-size: 0.9rem;
    border-left: none;
}

.collapse .nav-link:hover,
.collapse .nav-link.active {
    background: rgba(255,255,255,0.05);
    border-left: 3px solid rgba(255,255,255,0.5);
    padding-left: 2.3rem;
}

/* Top Navigation Bar */
.top-navbar {
    background: white !important;
    box-shadow: var(--box-shadow);
    height: var(--header-height);
    padding: 0 1.5rem;
    position: sticky;
    top: 0;
    z-index: 999;
    border-bottom: 1px solid #e9ecef;
}

.navbar-brand {
    font-weight: 600;
    color: var(--primary-color) !important;
    font-size: 1.3rem;
}

.navbar-nav .nav-link {
    color: #495057 !important;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    margin: 0 0.2rem;
}

.navbar-nav .nav-link:hover {
    background-color: rgba(102, 126, 234, 0.1);
    color: var(--primary-color) !important;
}

.dropdown-menu {
    border: none;
    box-shadow: var(--box-shadow-lg);
    border-radius: var(--border-radius);
    padding: 0.5rem 0;
    margin-top: 0.5rem;
}

.dropdown-item {
    padding: 0.5rem 1rem;
    transition: var(--transition);
    color: #495057;
}

.dropdown-item:hover {
    background-color: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
}

.dropdown-header {
    color: #6c757d;
    font-size: 0.875rem;
    font-weight: 600;
    padding: 0.5rem 1rem;
}

/* Card Styles */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    margin-bottom: 1.5rem;
    background: white;
}

.card:hover {
    box-shadow: var(--box-shadow-lg);
    transform: translateY(-2px);
}

.card-header {
    background: white;
    border-bottom: 1px solid #e9ecef;
    padding: 1rem 1.25rem;
    font-weight: 600;
    color: #495057;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
}

.card-body {
    padding: 1.25rem;
}

.card-footer {
    background: transparent;
    border-top: 1px solid #e9ecef;
    padding: 0.75rem 1.25rem;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
}

/* Status Cards */
.status-card {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 1rem;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.status-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--box-shadow-lg);
}

.status-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    transform: translate(30px, -30px);
}

.status-card .status-number {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 2;
}

.status-card .status-label {
    font-size: 0.9rem;
    opacity: 0.9;
    position: relative;
    z-index: 2;
}

.status-card .status-icon {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 2.5rem;
    opacity: 0.3;
    z-index: 1;
}

/* Button Styles */
.btn {
    border-radius: var(--border-radius);
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.btn i {
    margin-right: 0.5rem;
}

.btn:last-child i,
.btn i:only-child {
    margin-right: 0;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #5a6fd8 0%, #6a4190 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(102, 126, 234, 0.3);
    color: white;
}

.btn-outline-primary {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    background: transparent;
}

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

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

.btn-success:hover {
    background-color: #218838;
    color: white;
}

.btn-warning {
    background-color: var(--warning-color);
    color: #212529;
}

.btn-warning:hover {
    background-color: #e0a800;
    color: #212529;
}

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

.btn-danger:hover {
    background-color: #c82333;
    color: white;
}

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

.btn-info:hover {
    background-color: #138496;
    color: white;
}

.btn-secondary {
    background-color: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background-color: #5a6268;
    color: white;
}

.btn-sm {
    padding: 0.25rem 0.75rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1.125rem;
}

.btn-group {
    display: inline-flex;
    border-radius: var(--border-radius);
    overflow: hidden;
}

.btn-group .btn {
    border-radius: 0;
    border-right: 1px solid rgba(255,255,255,0.2);
}

.btn-group .btn:first-child {
    border-radius: var(--border-radius) 0 0 var(--border-radius);
}

.btn-group .btn:last-child {
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    border-right: none;
}

/* Form Styles */
.form-control {
    border-radius: var(--border-radius);
    border: 1px solid #ced4da;
    padding: 0.5rem 0.75rem;
    transition: var(--transition);
    font-size: 0.9rem;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
    outline: none;
}

.form-control.is-invalid {
    border-color: var(--danger-color);
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

.form-control.is-valid {
    border-color: var(--success-color);
    box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25);
}

.form-label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #495057;
    font-size: 0.9rem;
}

.form-select {
    border-radius: var(--border-radius);
    border: 1px solid #ced4da;
    padding: 0.5rem 0.75rem;
    transition: var(--transition);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m1 6 7 7 7-7'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 16px 12px;
}

.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
    outline: none;
}

.form-check-input {
    border-radius: 0.25rem;
}

.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.input-group {
    display: flex;
    border-radius: var(--border-radius);
    overflow: hidden;
}

.input-group-text {
    background: #f8f9fa;
    border: 1px solid #ced4da;
    padding: 0.5rem 0.75rem;
    color: #495057;
    font-size: 0.9rem;
}

.input-group .form-control {
    border-radius: 0;
}

.input-group .form-control:first-child {
    border-radius: var(--border-radius) 0 0 var(--border-radius);
}

.input-group .form-control:last-child {
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

/* Table Styles */
.table {
    margin-bottom: 0;
    background: white;
}

.table th {
    border-top: none;
    font-weight: 600;
    color: #495057;
    background: #f8f9fa;
    padding: 1rem 0.75rem;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table td {
    padding: 0.75rem;
    vertical-align: middle;
    border-bottom: 1px solid #e9ecef;
}

.table-hover tbody tr:hover {
    background-color: rgba(102, 126, 234, 0.05);
}

.table-responsive {
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
}

.table-light {
    background-color: #f8f9fa;
}

/* DataTables Customization */
.dataTables_wrapper {
    padding: 1rem;
}

.dataTables_wrapper .dataTables_length,
.dataTables_wrapper .dataTables_filter {
    margin-bottom: 1rem;
}

.dataTables_wrapper .dataTables_length select {
    border: 1px solid #ced4da;
    border-radius: var(--border-radius);
    padding: 0.25rem 0.5rem;
    margin: 0 0.5rem;
}

.dataTables_wrapper .dataTables_filter input {
    border: 1px solid #ced4da;
    border-radius: var(--border-radius);
    padding: 0.25rem 0.5rem;
    margin-left: 0.5rem;
}

.dataTables_wrapper .dataTables_paginate .paginate_button {
    padding: 0.5rem 0.75rem;
    margin: 0 0.25rem;
    border-radius: var(--border-radius);
    border: 1px solid #dee2e6;
    background: white;
    color: #495057;
    text-decoration: none;
}

.dataTables_wrapper .dataTables_paginate .paginate_button:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white !important;
}

.dataTables_wrapper .dataTables_paginate .paginate_button.current {
    background: var(--primary-color) !important;
    border-color: var(--primary-color) !important;
    color: white !important;
}

/* Badge Styles */
.badge {
    padding: 0.5em 0.8em;
    border-radius: var(--border-radius);
    font-size: 0.75em;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.badge-status {
    font-size: 0.8em;
    padding: 0.4em 0.8em;
}

.bg-success {
    background-color: var(--success-color) !important;
}

.bg-warning {
    background-color: var(--warning-color) !important;
    color: #212529 !important;
}

.bg-danger {
    background-color: var(--danger-color) !important;
}

.bg-info {
    background-color: var(--info-color) !important;
}

.bg-primary {
    background-color: var(--primary-color) !important;
}

.bg-secondary {
    background-color: #6c757d !important;
}

.bg-light {
    background-color: #f8f9fa !important;
    color: #495057 !important;
}

.bg-dark {
    background-color: var(--dark-color) !important;
}

/* Alert Styles */
.alert {
    border: none;
    border-radius: var(--border-radius);
    padding: 1rem 1.25rem;
    margin-bottom: 1rem;
    border-left: 4px solid transparent;
    position: relative;
}

.alert-success {
    background-color: rgba(40, 167, 69, 0.1);
    color: #155724;
    border-left-color: var(--success-color);
}

.alert-danger {
    background-color: rgba(220, 53, 69, 0.1);
    color: #721c24;
    border-left-color: var(--danger-color);
}

.alert-warning {
    background-color: rgba(255, 193, 7, 0.1);
    color: #856404;
    border-left-color: var(--warning-color);
}

.alert-info {
    background-color: rgba(23, 162, 184, 0.1);
    color: #0c5460;
    border-left-color: var(--info-color);
}

.alert-dismissible .btn-close {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    padding: 0.5rem;
    color: inherit;
    background: none;
    border: none;
    opacity: 0.5;
}

.alert-dismissible .btn-close:hover {
    opacity: 1;
}

/* Progress Bar Styles */
.progress {
    height: 0.75rem;
    border-radius: var(--border-radius);
    background-color: #e9ecef;
    overflow: hidden;
}

.progress-bar {
    border-radius: var(--border-radius);
    transition: width 0.6s ease;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

.progress-bar.bg-success {
    background: var(--success-color) !important;
}

.progress-bar.bg-warning {
    background: var(--warning-color) !important;
}

.progress-bar.bg-danger {
    background: var(--danger-color) !important;
}

.progress-bar.bg-info {
    background: var(--info-color) !important;
}

/* Modal Styles */
.modal-content {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-lg);
}

.modal-header {
    border-bottom: 1px solid #e9ecef;
    padding: 1.5rem;
    background-color: #f8f9fa;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
}

.modal-title {
    font-weight: 600;
    color: #495057;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    border-top: 1px solid #e9ecef;
    padding: 1rem 1.5rem;
    background-color: #f8f9fa;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
}

/* Toast Styles */
.toast {
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.toast-header {
    background-color: rgba(0,0,0,0.03);
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

/* Loading States */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255,255,255,0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    border-radius: var(--border-radius);
}

.spinner-border-sm {
    width: 1rem;
    height: 1rem;
}

/* Utility Classes */
.bg-gradient-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

.border-primary-custom {
    border-color: var(--primary-color) !important;
}

.shadow-sm {
    box-shadow: 0 1px 3px rgba(0,0,0,0.1) !important;
}

.shadow {
    box-shadow: var(--box-shadow) !important;
}

.shadow-lg {
    box-shadow: var(--box-shadow-lg) !important;
}

.rounded {
    border-radius: var(--border-radius) !important;
}

.rounded-lg {
    border-radius: calc(var(--border-radius) * 1.5) !important;
}

.rounded-circle {
    border-radius: 50% !important;
}

/* Status Indicators */
.status-online {
    color: var(--success-color);
}

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

.status-warning {
    color: var(--warning-color);
}

.status-maintenance {
    color: var(--info-color);
}

.status-indicator {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 0.5rem;
}

.status-indicator.online {
    background-color: var(--success-color);
    box-shadow: 0 0 0 2px rgba(40, 167, 69, 0.3);
    animation: pulse-green 2s infinite;
}

.status-indicator.offline {
    background-color: var(--danger-color);
    box-shadow: 0 0 0 2px rgba(220, 53, 69, 0.3);
}

.status-indicator.maintenance {
    background-color: var(--warning-color);
    box-shadow: 0 0 0 2px rgba(255, 193, 7, 0.3);
}

.status-indicator.error {
    background-color: var(--danger-color);
    box-shadow: 0 0 0 2px rgba(220, 53, 69, 0.3);
    animation: pulse-red 1s infinite;
}

/* Activity Timeline */
.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0.5rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary-color), var(--secondary-color));
}

.timeline-item {
    position: relative;
    margin-bottom: 1.5rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -2rem;
    top: 0.5rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--primary-color);
    border: 2px solid white;
    box-shadow: 0 0 0 2px var(--primary-color);
}

.timeline-content {
    background: white;
    padding: 1rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    position: relative;
}

.timeline-content::before {
    content: '';
    position: absolute;
    left: -8px;
    top: 20px;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 8px 8px 8px 0;
    border-color: transparent white transparent transparent;
}

/* Statistics Cards */
.stat-card {
    text-align: center;
    padding: 2rem 1rem;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--box-shadow-lg);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    color: #6c757d;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.stat-change {
    font-size: 0.8rem;
    margin-top: 0.5rem;
    font-weight: 500;
}

.stat-change.positive {
    color: var(--success-color);
}

.stat-change.negative {
    color: var(--danger-color);
}

.stat-icon {
    position: absolute;
    right: 1rem;
    top: 1rem;
    font-size: 2rem;
    opacity: 0.1;
    color: var(--primary-color);
}

/* Device/Sensor Cards */
.device-card {
    border-left: 4px solid var(--primary-color);
    transition: var(--transition);
}

.device-card:hover {
    border-left-color: var(--secondary-color);
    transform: translateX(4px);
}

.device-card.online {
    border-left-color: var(--success-color);
}

.device-card.offline {
    border-left-color: var(--danger-color);
}

.device-card.maintenance {
    border-left-color: var(--warning-color);
}

.device-card.error {
    border-left-color: var(--danger-color);
}

/* Alert Severity Styles */
.alert-critical {
    border-left: 4px solid #dc3545;
    background-color: rgba(220, 53, 69, 0.05);
}

.alert-high {
    border-left: 4px solid #fd7e14;
    background-color: rgba(253, 126, 20, 0.05);
}

.alert-medium {
    border-left: 4px solid #ffc107;
    background-color: rgba(255, 193, 7, 0.05);
}

.alert-low {
    border-left: 4px solid #28a745;
    background-color: rgba(40, 167, 69, 0.05);
}

/* Quick Actions */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.quick-action {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
    transition: var(--transition);
    text-decoration: none;
    color: inherit;
    position: relative;
    overflow: hidden;
}

.quick-action:hover {
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-lg);
    text-decoration: none;
    color: inherit;
}

.quick-action::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    transform: scaleX(0);
    transition: var(--transition);
}

.quick-action:hover::before {
    transform: scaleX(1);
}

.quick-action-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    transition: var(--transition);
}

.quick-action:hover .quick-action-icon {
    transform: scale(1.1);
}

.quick-action-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
    font-size: 1rem;
}

.quick-action-desc {
    font-size: 0.8rem;
    color: #6c757d;
    line-height: 1.4;
}

/* Data Visualization */
.metric-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 1rem;
    position: relative;
}

.metric-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.metric-label {
    font-size: 0.9rem;
    color: #6c757d;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

.metric-trend {
    display: flex;
    align-items: center;
    font-size: 0.8rem;
    font-weight: 500;
}

.metric-trend i {
    margin-right: 0.25rem;
}

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

.trend-down {
    color: var(--danger-color);
}

.trend-neutral {
    color: #6c757d;
}

/* Chart Container */
.chart-container {
    position: relative;
    height: 300px;
    margin: 1rem 0;
    background: white;
    border-radius: var(--border-radius);
    padding: 1rem;
    box-shadow: var(--box-shadow);
}

.chart-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #495057;
}

.chart-legend {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 1rem;
    gap: 1rem;
}

.chart-legend-item {
    display: flex;
    align-items: center;
    font-size: 0.8rem;
    color: #6c757d;
}

.chart-legend-color {
    width: 12px;
    height: 12px;
    border-radius: 2px;
    margin-right: 0.5rem;
}

/* Filter and Search */
.filter-bar {
    background: white;
    padding: 1rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 1.5rem;
}

.search-box {
    position: relative;
}

.search-box input {
    padding-left: 2.5rem;
}

.search-box .search-icon {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: #6c757d;
    z-index: 5;
}

/* Pagination */
.pagination {
    margin-bottom: 0;
}

.page-link {
    color: var(--primary-color);
    border: 1px solid #dee2e6;
    padding: 0.5rem 0.75rem;
    margin: 0 0.125rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.page-link:hover {
    color: white;
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.page-item.active .page-link {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.page-item.disabled .page-link {
    color: #6c757d;
    background-color: #fff;
    border-color: #dee2e6;
}

/* Breadcrumb */
.breadcrumb {
    background: transparent;
    padding: 0;
    margin-bottom: 1rem;
}

.breadcrumb-item {
    font-size: 0.9rem;
}

.breadcrumb-item.active {
    color: #6c757d;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: ">";
    color: #6c757d;
}

/* File Upload */
.file-upload {
    border: 2px dashed #dee2e6;
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    background: #f8f9fa;
}

.file-upload:hover {
    border-color: var(--primary-color);
    background: rgba(102, 126, 234, 0.05);
}

.file-upload.dragover {
    border-color: var(--primary-color);
    background: rgba(102, 126, 234, 0.1);
}

.file-upload-icon {
    font-size: 3rem;
    color: #6c757d;
    margin-bottom: 1rem;
}

.file-upload-text {
    color: #6c757d;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .sidebar {
        width: 240px;
    }
    
    .main-content {
        margin-left: 240px;
    }
    
    :root {
        --sidebar-width: 240px;
    }
}

@media (max-width: 992px) {
    .container-fluid {
        padding: 1rem;
    }
    
    .status-card {
        padding: 1rem;
    }
    
    .status-card .status-number {
        font-size: 2rem;
    }
    
    .status-card .status-icon {
        font-size: 2rem;
        right: 0.75rem;
    }
    
    .stat-card {
        padding: 1.5rem 1rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .quick-actions {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        width: var(--sidebar-width);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .top-navbar {
        padding: 0 1rem;
    }
    
    .container-fluid {
        padding: 0.75rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .table-responsive {
        font-size: 0.85rem;
    }
    
    .btn {
        padding: 0.375rem 0.75rem;
        font-size: 0.875rem;
    }
    
    .modal-dialog {
        margin: 1rem;
    }
    
    .quick-actions {
        grid-template-columns: 1fr;
    }
    
    .navbar-nav {
        flex-direction: row;
    }
    
    .dropdown-menu {
        position: absolute;
        right: 0;
        left: auto;
    }
}

@media (max-width: 576px) {
    .container-fluid {
        padding: 0.5rem;
    }
    
    .card {
        margin-bottom: 1rem;
    }
    
    .status-card .status-number {
        font-size: 1.75rem;
    }
    
    .stat-number {
        font-size: 1.75rem;
    }
    
    .metric-value {
        font-size: 1.5rem;
    }
    
    .filter-bar {
        padding: 0.75rem;
    }
    
    .chart-container {
        height: 250px;
        padding: 0.75rem;
    }
    
    .table th,
    .table td {
        padding: 0.5rem 0.25rem;
        font-size: 0.8rem;
    }
    
    .btn-group {
        display: flex;
        flex-direction: column;
    }
    
    .btn-group .btn {
        border-radius: var(--border-radius);
        margin-bottom: 0.25rem;
    }
    
    .timeline {
        padding-left: 1.5rem;
    }
    
    .timeline::before {
        left: 0.25rem;
    }
    
    .timeline-item::before {
        left: -1.5rem;
        width: 8px;
        height: 8px;
    }
}

/* Print Styles */
@media print {
    .sidebar,
    .top-navbar,
    .btn,
    .dropdown,
    .toast-container,
    .modal,
    .filter-bar,
    .pagination {
        display: none !important;
    }
    
    .main-content {
        margin-left: 0 !important;
        padding: 0 !important;
    }
    
    .container-fluid {
        padding: 1rem !important;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ddd;
        break-inside: avoid;
        margin-bottom: 1rem;
    }
    
    .card-header {
        background: #f8f9fa !important;
        border-bottom: 1px solid #ddd;
    }
    
    body {
        background: white !important;
        font-size: 12pt;
    }
    
    .table {
        font-size: 10pt;
    }
    
    .status-card {
        background: white !important;
        color: black !important;
        border: 1px solid #ddd;
    }
    
    .badge {
        border: 1px solid #ddd;
        color: black !important;
    }
}

/* Dark Mode Support (Optional) */
@media (prefers-color-scheme: dark) {
    :root {
        --light-color: #1a1a1a;
        --dark-color: #ffffff;
    }
    
    body {
        background-color: #121212;
        color: #ffffff;
    }
    
    .card {
        background-color: #1e1e1e;
        color: #ffffff;
        border: 1px solid #333;
    }
    
    .card-header {
        background-color: #2d2d2d;
        border-bottom-color: #333;
        color: #ffffff;
    }
    
    .table {
        color: #ffffff;
        background-color: #1e1e1e;
    }
    
    .table th {
        background-color: #2d2d2d;
        color: #ffffff;
        border-bottom-color: #333;
    }
    
    .table td {
        border-bottom-color: #333;
    }
    
    .form-control {
        background-color: #2d2d2d;
        border-color: #404040;
        color: #ffffff;
    }
    
    .form-control:focus {
        background-color: #2d2d2d;
        border-color: var(--primary-color);
        color: #ffffff;
        box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
    }
    
    .form-select {
        background-color: #2d2d2d;
        border-color: #404040;
        color: #ffffff;
    }
    
    .input-group-text {
        background-color: #2d2d2d;
        border-color: #404040;
        color: #ffffff;
    }
    
    .modal-content {
        background-color: #1e1e1e;
        color: #ffffff;
    }
    
    .modal-header,
    .modal-footer {
        background-color: #2d2d2d;
        border-color: #333;
    }
    
    .dropdown-menu {
        background-color: #1e1e1e;
        border-color: #333;
    }
    
    .dropdown-item {
        color: #ffffff;
    }
    
    .dropdown-item:hover {
        background-color: rgba(102, 126, 234, 0.2);
        color: var(--primary-color);
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 3px;
    transition: var(--transition);
}

::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

.sidebar::-webkit-scrollbar {
    width: 4px;
}

.sidebar::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
}

.sidebar::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.5);
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

.slide-in-left {
    animation: slideInLeft 0.5s ease-out;
}

.slide-in-right {
    animation: slideInRight 0.5s ease-out;
}

.slide-in-up {
    animation: slideInUp 0.5s ease-out;
}

.bounce-in {
    animation: bounceIn 0.6s ease-out;
}

.zoom-in {
    animation: zoomIn 0.3s ease-out;
}

/* Keyframe Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-100px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(100px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes pulse-green {
    0% {
        box-shadow: 0 0 0 0 rgba(40, 167, 69, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(40, 167, 69, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(40, 167, 69, 0);
    }
}

@keyframes pulse-red {
    0% {
        box-shadow: 0 0 0 0 rgba(220, 53, 69, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(220, 53, 69, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(220, 53, 69, 0);
    }
}

@keyframes pulse {
    0% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
    100% {
        opacity: 1;
    }
}

/* Accessibility Improvements */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.focus-visible:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-color);
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: var(--border-radius);
    z-index: 9999;
}

.skip-link:focus {
    top: 6px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .card {
        border: 2px solid #000;
    }
    
    .btn {
        border: 2px solid;
    }
    
    .form-control {
        border: 2px solid;
    }
    
    .table th,
    .table td {
        border: 1px solid #000;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .status-indicator.online {
        animation: none;
    }
    
    .status-indicator.error {
        animation: none;
    }
}

/* Custom Utilities */
.text-truncate-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.text-truncate-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.cursor-pointer {
    cursor: pointer;
}

.user-select-none {
    user-select: none;
}

.overflow-hidden {
    overflow: hidden;
}

.position-relative {
    position: relative;
}

.position-absolute {
    position: absolute;
}

.w-100 {
    width: 100%;
}

.h-100 {
    height: 100%;
}

.d-flex {
    display: flex;
}

.align-items-center {
    align-items: center;
}

.justify-content-center {
    justify-content: center;
}

.justify-content-between {
    justify-content: space-between;
}

.text-center {
    text-align: center;
}

.text-end {
    text-align: end;
}

.mb-0 {
    margin-bottom: 0;
}

.mt-3 {
    margin-top: 1rem;
}

.mb-3 {
    margin-bottom: 1rem;
}

.p-3 {
    padding: 1rem;
}

.opacity-75 {
    opacity: 0.75;
}

/* End of CSS */