:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #06b6d4;
    --bg-body: #f1f5f9;
    --bg-card: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -1px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.04);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
}

html, body {
    font-family: 'Inter', 'Segoe UI', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background-color: var(--bg-body);
    color: var(--text-primary);
}

a, .btn-link {
    color: #006bb7;
}

.btn-primary {
    color: #fff;
    background-color: #1b6ec2;
    border-color: #1861ac;
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

.content {
    padding-top: 1.1rem;
}

h1:focus {
    outline: none;
}

.valid.modified:not([type=checkbox]) {
    outline: 1px solid #26b050;
}

.invalid {
    outline: 1px solid #e50000;
}

.validation-message {
    color: #e50000;
}

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

    .blazor-error-boundary::after {
        content: "An error has occurred."
    }

.darker-border-checkbox.form-check-input {
    border-color: #929292;
}

/* ========================================
   TABLE STYLES - Bootstrap Enhancement
   ======================================== */

/* Table genel stiller */
.table {
    margin-bottom: 0;
}

.table-hover tbody tr:hover {
    background-color: #f8f9fa;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.table thead th {
    background-color: #f8f9fa;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    color: #495057;
    border-bottom: 2px solid #dee2e6;
    padding: 12px 8px;
    vertical-align: middle;
}

.table tbody td {
    padding: 12px 8px;
    vertical-align: middle;
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(0, 0, 0, 0.02);
}

.table-sm thead th,
.table-sm tbody td {
    padding: 8px 6px;
    font-size: 0.9rem;
}

/* Table renk varyasyonları */
.table-danger {
    background-color: #fff5f5;
    border-left: 4px solid #dc3545;
}

.table-warning {
    background-color: #fffbf0;
    border-left: 4px solid #ffc107;
}

.table-success {
    background-color: #f0fff4;
    border-left: 4px solid #28a745;
}

.table-info {
    background-color: #f0f9ff;
    border-left: 4px solid #17a2b8;
}

/* Responsive table */
.table-responsive {
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

/* ========================================
   PAGINATION STYLES
   ======================================== */

.pagination {
    margin-bottom: 0;
}

.pagination .page-link {
    color: #1b6ec2;
    border: 1px solid #dee2e6;
    padding: 8px 12px;
    margin: 0 2px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.pagination .page-link:hover {
    background-color: #e9ecef;
    border-color: #1b6ec2;
    color: #0056b3;
    transform: translateY(-2px);
}

.pagination .page-item.active .page-link {
    background-color: #1b6ec2;
    border-color: #1b6ec2;
    color: white;
    box-shadow: 0 4px 8px rgba(27, 110, 194, 0.3);
}

.pagination .page-item.disabled .page-link {
    cursor: not-allowed;
    opacity: 0.5;
    background-color: #f8f9fa;
}

.pagination .page-item.disabled .page-link:hover {
    transform: none;
}

/* ========================================
   BADGE STYLES - Enhanced
   ======================================== */

.badge {
    padding: 6px 12px;
    font-weight: 600;
    font-size: 0.85rem;
    border-radius: 6px;
}

.badge i {
    margin-right: 4px;
}

/* ========================================
   CARD STYLES - Enhanced
   ======================================== */

.card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
}

.card-header {
    background-color: white;
    border-bottom: 2px solid #f0f0f0;
    padding: 1rem 1.25rem;
    font-weight: 600;
}

.card-footer {
    background-color: #f8f9fa;
    border-top: 1px solid #dee2e6;
    padding: 1rem 1.25rem;
}

/* ========================================
   BUTTON GROUP STYLES
   ======================================== */

.btn-group .btn {
    border-radius: 6px;
    margin: 0 2px;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.875rem;
}

/* ========================================
   ALERT STYLES - Enhanced
   ======================================== */

.alert {
    border-radius: 10px;
    border: none;
    padding: 1rem 1.25rem;
}

.alert-danger {
    background-color: #fff5f5;
    color: #dc3545;
    border-left: 4px solid #dc3545;
}

.alert-warning {
    background-color: #fffbf0;
    color: #856404;
    border-left: 4px solid #ffc107;
}

.alert-success {
    background-color: #f0fff4;
    color: #155724;
    border-left: 4px solid #28a745;
}

.alert-info {
    background-color: #f0f9ff;
    color: #004085;
    border-left: 4px solid #17a2b8;
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

.text-truncate-2 {
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.cursor-pointer {
    cursor: pointer;
}

.shadow-sm-hover:hover {
    box-shadow: 0 0.125rem 0.5rem rgba(0, 0, 0, 0.15) !important;
}

/* ========================================
   LOADING SPINNER
   ======================================== */

.spinner-border {
    width: 3rem;
    height: 3rem;
}

/* ========================================
   RESPONSIVE ADJUSTMENTS
   ======================================== */

@media (max-width: 768px) {
    .pagination .page-link {
        padding: 6px 10px;
        font-size: 0.875rem;
    }

    .table thead th {
        font-size: 0.75rem;
        padding: 8px 6px;
    }

    .table tbody td {
        font-size: 0.85rem;
        padding: 8px 6px;
    }
}

/* ========================================
   PROFESSIONAL IOT DASHBOARD STYLES
   ======================================== */

.stats-card {
    border-radius: var(--radius-md);
    padding: 1.5rem;
    color: white;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.stats-card .stats-icon {
    position: absolute;
    top: -10px;
    right: -10px;
    font-size: 4rem;
    opacity: 0.15;
}

.stats-card .stats-content h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.stats-card .stats-content small {
    opacity: 0.85;
    font-size: 0.85rem;
    font-weight: 500;
}

/* Device status indicator */
.device-status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

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

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

.device-status-badge .pulse {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.device-status-badge.online .pulse {
    background-color: var(--success);
    animation: pulse-green 2s infinite;
}

.device-status-badge.offline .pulse {
    background-color: var(--danger);
}

@keyframes pulse-green {
    0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
    70% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
    100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* Device card in list */
.device-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    padding: 1.25rem;
    transition: all 0.2s ease;
    cursor: pointer;
}

.device-card:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.device-card .device-name {
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--text-primary);
}

.device-card .device-token {
    font-family: 'Courier New', monospace;
    font-size: 0.8rem;
    color: var(--text-secondary);
    background: #f8fafc;
    padding: 2px 8px;
    border-radius: 4px;
}

.device-card .device-metrics {
    display: flex;
    gap: 1rem;
    margin-top: 0.75rem;
}

.device-card .metric {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.device-card .metric i {
    font-size: 0.9rem;
}

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

/* Battery indicator */
.battery-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
}

.battery-bar {
    width: 48px;
    height: 18px;
    border: 2px solid var(--text-secondary);
    border-radius: 4px;
    position: relative;
    overflow: hidden;
}

.battery-bar::after {
    content: '';
    position: absolute;
    right: -5px;
    top: 4px;
    width: 3px;
    height: 8px;
    background: var(--text-secondary);
    border-radius: 0 2px 2px 0;
}

.battery-bar .fill {
    height: 100%;
    transition: width 0.3s ease;
    border-radius: 2px;
}

.battery-bar .fill.high { background: var(--success); }
.battery-bar .fill.medium { background: var(--warning); }
.battery-bar .fill.low { background: var(--danger); }

/* Page header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-header h2 {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--text-primary);
    margin: 0;
}

.page-header .subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0;
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 3rem;
    opacity: 0.3;
    margin-bottom: 1rem;
}

.empty-state h4 {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

/* Live indicator */
.live-indicator {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.live-indicator .dot {
    width: 6px;
    height: 6px;
    background: var(--danger);
    border-radius: 50%;
    animation: blink 1.5s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* Smooth transitions on sidebar */
.nav-link {
    transition: all 0.15s ease;
    border-radius: 6px;
    margin: 2px 0;
}

.nav-link:hover {
    background: rgba(255,255,255,0.08);
}

.nav-link.active {
    background: rgba(255,255,255,0.15) !important;
    font-weight: 600;
}

/* Form improvements */
.form-control, .form-select {
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    padding: 0.6rem 0.9rem;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Button improvements */
.btn {
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: all 0.15s ease;
    padding: 0.5rem 1rem;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}