/* Root Variables */
:root {
    --bg-app: #0b0f19;
    --bg-card: rgba(21, 28, 46, 0.65);
    --bg-sidebar: #111827;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-hover: rgba(255, 255, 255, 0.15);
    
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --primary-light: rgba(59, 130, 246, 0.15);
    
    --accent-cyan: #06b6d4;
    --accent-cyan-light: rgba(6, 182, 212, 0.15);
    
    --accent-purple: #a855f7;
    --accent-purple-light: rgba(168, 85, 247, 0.15);
    
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #06b6d4;
    
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Roboto, Helvetica, Arial, sans-serif;
    --radius-lg: 12px;
    --radius-md: 8px;
    --radius-sm: 4px;
    
    --shadow-premium: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    --transition-smooth: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-app);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* Main Layout Grid */
.app-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: 100vh;
}

/* Sidebar Styling */
.sidebar {
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow-y: auto;
    padding: 1.5rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

.sidebar-header {
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
    padding-bottom: 1.25rem;
}

.sidebar-brand {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 0.65rem;
}

.sidebar-logo {
    display: block;
    height: 40px;
    width: auto;
    flex-shrink: 0;
    object-fit: contain;
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.35));
}

.sidebar-header h2 {
    color: var(--accent-cyan);
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    line-height: 1.25;
    margin: 0;
}

.sidebar-section {
    margin-bottom: 1.5rem;
}

.sidebar-section h3 {
    color: var(--text-primary);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    margin-bottom: 0.75rem;
    text-transform: uppercase;
}

.sidebar-section h3 .icon {
    margin-right: 0.25rem;
}

/* Cases List */
.cases-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-height: 200px;
    overflow-y: auto;
    padding-right: 0.25rem;
}

.case-item-row {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    width: 100%;
}

.case-item-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.8rem;
    padding: 0.5rem 0.7rem;
    text-align: left;
    transition: var(--transition-smooth);
    flex: 1;
    min-width: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.case-item-btn .case-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.case-item-btn .case-badge {
    font-size: 0.7rem;
    padding: 0.1rem 0.35rem;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 4px;
    white-space: nowrap;
    margin-left: 0.4rem;
}

.case-item-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--border-color-hover);
    color: var(--text-primary);
}

.case-item-btn.active {
    background: var(--primary-light);
    border-color: var(--primary);
    color: var(--primary);
    font-weight: 500;
}

.case-item-btn.active .case-badge {
    background: rgba(59, 130, 246, 0.25);
    color: #93c5fd;
}

.btn-edit-case {
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.8rem;
    padding: 0.4rem 0.45rem;
    line-height: 1;
    transition: var(--transition-smooth);
    opacity: 0.6;
    flex-shrink: 0;
}

.case-item-row:hover .btn-edit-case {
    opacity: 1;
}

.btn-edit-case:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--border-color-hover);
    color: var(--text-primary);
    transform: scale(1.08);
}

/* Control Inputs */
.control-group {
    margin-bottom: 0.75rem;
}

.control-group label {
    color: var(--text-secondary);
    display: block;
    font-size: 0.75rem;
    margin-bottom: 0.35rem;
}

.control-group input[type="datetime-local"],
.control-group select,
.control-group textarea,
.control-group input[type="number"],
.control-group input[type="text"] {
    background-color: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    outline: none;
    padding: 0.5rem 0.75rem;
    transition: var(--transition-smooth);
    width: 100%;
}

.control-group input[type="datetime-local"]:focus,
.control-group select:focus,
.control-group textarea:focus,
.control-group input[type="number"]:focus,
.control-group input[type="text"]:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-light);
}

.grid-2 {
    display: grid;
    gap: 0.5rem;
    grid-template-columns: 1fr 1fr;
}

/* Device Selection Box */
.select-all-group {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.device-checkboxes {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    max-height: 200px;
    overflow-y: auto;
    padding: 0.5rem;
}

.device-checkboxes label {
    align-items: center;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    font-size: 0.8rem;
    gap: 0.5rem;
    transition: var(--transition-smooth);
    user-select: none;
}

.device-checkboxes label:hover {
    color: var(--text-primary);
}

.device-checkboxes .device-name {
    min-width: 0;
}

.device-checkboxes .device-host {
    color: var(--text-muted);
    font-size: 0.68rem;
    margin-left: auto;
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.device-checkboxes input[type="checkbox"] {
    accent-color: var(--primary);
    cursor: pointer;
}

/* Buttons */
.btn-primary {
    background-color: var(--primary);
    border: none;
    border-radius: var(--radius-md);
    color: #fff;
    cursor: pointer;
    font-family: var(--font-sans);
    font-weight: 500;
    outline: none;
    padding: 0.75rem 1rem;
    text-align: center;
    transition: var(--transition-smooth);
    width: 100%;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.4);
}

.btn-small {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    transition: var(--transition-smooth);
}

.btn-small:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.btn-secondary {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    color: var(--primary);
}

.btn-secondary:hover {
    background: rgba(59, 130, 246, 0.2);
    color: #fff;
}

.btn-danger {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

.btn-danger:hover {
    background: var(--danger);
    color: #fff;
}

/* Main Dashboard Area */
.main-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    height: 100vh;
    overflow-y: auto;
    padding: 2rem;
}

/* Header */
.dashboard-header {
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: space-between;
    padding-bottom: 1rem;
}

.header-title h1 {
    font-size: 1.8rem;
    font-weight: 700;
}

.header-title p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 0.2rem;
}

/* Header DB Control Panel */
.header-db-panel {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.db-info-pill {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.4rem 0.85rem;
    transition: var(--transition-smooth);
}

.db-info-pill:hover {
    background: rgba(255, 255, 255, 0.07);
    border-color: var(--border-color-hover);
}

.db-pill-row-top {
    align-items: center;
    display: flex;
    gap: 0.5rem;
}

.db-name {
    color: var(--text-primary);
    font-size: 0.85rem;
    font-weight: 600;
    max-width: 180px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.db-badge {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 4px;
    color: var(--text-secondary);
    font-size: 0.72rem;
    padding: 0.1rem 0.4rem;
}

.db-pill-row-bottom {
    align-items: center;
    color: var(--text-secondary);
    display: flex;
    gap: 0.35rem;
    font-size: 0.75rem;
}

.db-time-icon {
    font-size: 0.8rem;
}

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

.db-timerange-val {
    color: var(--primary);
    font-weight: 500;
}

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

.btn-import-cdu {
    align-items: center;
    background: rgba(16, 185, 129, 0.12);
    border: 1px solid rgba(16, 185, 129, 0.35);
    border-radius: var(--radius-md);
    color: #34d399;
    cursor: pointer;
    display: inline-flex;
    font-family: var(--font-sans);
    font-size: 0.82rem;
    font-weight: 500;
    gap: 0.4rem;
    padding: 0.5rem 0.9rem;
    white-space: nowrap;
    transition: var(--transition-smooth);
}

.btn-import-cdu:hover {
    background: rgba(16, 185, 129, 0.24);
    border-color: #34d399;
    color: #ffffff;
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.3);
}

.btn-import-db {
    align-items: center;
    cursor: pointer;
    display: inline-flex;
    font-size: 0.82rem;
    font-weight: 500;
    gap: 0.4rem;
    padding: 0.5rem 0.9rem;
    white-space: nowrap;
}

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

.status-indicator.online {
    background-color: var(--success);
    box-shadow: 0 0 6px var(--success);
}

.status-indicator.offline {
    background-color: var(--danger);
    box-shadow: 0 0 6px var(--danger);
}

.status-indicator.loading {
    background-color: var(--warning);
    box-shadow: 0 0 6px var(--warning);
}

/* Premium Card Glassmorphism Style */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-premium);
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    transition: var(--transition-smooth);
}

.card:hover {
    border-color: var(--border-color-hover);
}

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

.card-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

.card-header h3 .icon {
    margin-right: 0.25rem;
}

/* KPI Cards Layout */
.kpi-section {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.kpi-card {
    align-items: center;
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-premium);
    display: flex;
    gap: 1rem;
    padding: 1.25rem;
}

.kpi-icon {
    align-items: center;
    border-radius: 50%;
    display: flex;
    font-size: 1.5rem;
    height: 48px;
    justify-content: center;
    width: 48px;
}

.kpi-icon.power { background: var(--primary-light); color: var(--primary); }
.kpi-icon.flow { background: var(--accent-cyan-light); color: var(--accent-cyan); }
.kpi-icon.temp { background: rgba(245, 158, 11, 0.15); color: var(--warning); }
.kpi-icon.cooling { background: rgba(168, 85, 247, 0.15); color: var(--accent-purple); }
.kpi-icon.ratio { background: rgba(16, 185, 129, 0.15); color: var(--success); }

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

.kpi-title {
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 500;
}

.kpi-value {
    font-size: 1.35rem;
    font-weight: 700;
    margin-top: 0.1rem;
}

.kpi-value .unit {
    font-size: 0.85rem;
    font-weight: 400;
}

/* Exclusions List Manager */
.card-exclusions-manager {
    padding: 1rem 1.5rem;
}

.exclusions-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.exclusion-item {
    align-items: center;
    background: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.25);
    border-radius: var(--radius-md);
    display: flex;
    font-size: 0.78rem;
    gap: 0.5rem;
    padding: 0.4rem 0.75rem;
    transition: all 0.2s ease;
}

.exclusion-item:hover {
    background: rgba(239, 68, 68, 0.14);
    border-color: rgba(239, 68, 68, 0.45);
}

.exclusion-duration-tag {
    background: rgba(239, 68, 68, 0.2);
    color: #f87171;
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid rgba(239, 68, 68, 0.35);
    font-weight: 500;
}

.exclusion-time-span {
    color: var(--text-primary);
}

.btn-remove-exclusion {
    background: none;
    border: none;
    color: var(--danger);
    cursor: pointer;
    font-size: 1.1rem;
    line-height: 1;
    font-weight: bold;
    outline: none;
    padding: 0 2px;
    transition: transform 0.15s ease;
}

.btn-remove-exclusion:hover {
    color: #ef4444;
    transform: scale(1.25);
}

.exclusion-inputs-container {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.badge-warning {
    background: rgba(245, 158, 11, 0.15);
    color: #f59e0b;
    border: 1px solid rgba(245, 158, 11, 0.3);
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 600;
}

/* Tabs Header for Charts */
.chart-tabs-header {
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
}

.tabs {
    display: flex;
    gap: 0.5rem;
}

.tab-btn {
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 500;
    outline: none;
    padding: 0.5rem 1rem;
    transition: var(--transition-smooth);
}

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

.tab-btn.active {
    border-bottom-color: var(--primary);
    color: var(--primary);
    font-weight: 600;
}

.chart-help-text {
    color: var(--text-muted);
    font-size: 0.75rem;
    white-space: nowrap;
}

.chart-actions {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
    justify-content: flex-end;
}

/* Chart Y-Axis Scale Toggle Checkbox */
.chart-scale-toggle-label {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.25rem 0.65rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    color: var(--text-secondary);
    cursor: pointer;
    user-select: none;
    transition: var(--transition-smooth);
    height: 30px;
    box-sizing: border-box;
}

.chart-scale-toggle-label:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(59, 130, 246, 0.4);
    color: var(--text-primary);
}

.chart-scale-toggle-label input[type="checkbox"] {
    accent-color: var(--primary);
    cursor: pointer;
    width: 14px;
    height: 14px;
    margin: 0;
}

.chart-scale-toggle-label.active {
    background: rgba(59, 130, 246, 0.12);
    border-color: rgba(59, 130, 246, 0.5);
    color: #93c5fd;
    font-weight: 500;
}

#btn-export-chart-jpg {
    width: auto;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.75rem;
    font-size: 0.75rem;
    border-radius: var(--radius-sm);
    background-color: var(--primary);
    border: none;
    cursor: pointer;
    box-shadow: none;
    color: #fff;
    transition: var(--transition-smooth);
}

#btn-export-chart-jpg:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 0 8px rgba(59, 130, 246, 0.4);
}

/* Checkbox Filters Bar */
.chart-filters-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1.5rem;
    padding: 0.6rem 1rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: 1.2rem;
}

.chart-filters-bar .filter-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.filter-checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
    user-select: none;
    transition: var(--transition-smooth);
}

.filter-checkbox-label:hover {
    color: var(--text-primary);
}

.filter-checkbox-label input[type="checkbox"] {
    accent-color: var(--primary);
    cursor: pointer;
    width: 14px;
    height: 14px;
}

/* Data Tables */
.scrollable {
    max-height: 250px;
    overflow-y: auto;
}

.data-table {
    border-collapse: collapse;
    font-size: 0.85rem;
    text-align: left;
    width: 100%;
}

.data-table th, .data-table td {
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 1rem;
}

.data-table th {
    color: var(--text-secondary);
    font-weight: 600;
    position: sticky;
    top: 0;
}

.data-table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

.table-wrapper {
    overflow-x: auto;
    width: 100%;
}

/* Dashboard Bottom Grid */
.dashboard-grid {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: 1fr 1fr;
}

/* Helper Texts & Loading States */
.empty-text {
    color: var(--text-muted);
    font-style: italic;
    padding: 1.5rem;
    text-align: center;
}

.loading-text {
    color: var(--text-muted);
    font-size: 0.8rem;
    padding: 0.5rem;
}

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

/* Modal Dialogs */
.modal-dialog {
    background: none;
    border: none;
    margin: auto;
    outline: none;
}

.modal-dialog::backdrop {
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.modal-content {
    max-width: 480px;
    width: 90vw;
}

.modal-content h2 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.modal-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
    margin-top: 1.5rem;
}

.modal-actions button {
    width: auto;
}

/* Utility Helpers */
.hidden {
    display: none !important;
}

/* Status Labels */
.badge {
    border-radius: 4px;
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.15rem 0.4rem;
}

.badge-ats { background: var(--primary-light); color: var(--primary); }
.badge-fault { background: rgba(239, 68, 68, 0.15); color: var(--danger); }
.badge-cold { background: rgba(168, 85, 247, 0.15); color: var(--accent-purple); }
.badge-normal { background: rgba(16, 185, 129, 0.15); color: var(--success); }
.badge-custom { background: rgba(255, 255, 255, 0.08); color: var(--text-secondary); }

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

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.12);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.25);
}

/* Snapshot Modal Styles */
.modal-large {
    max-width: 780px;
    width: 90%;
}

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

.btn-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
}

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

.selection-section {
    margin-top: 1rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
}

.section-title-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.section-title-bar h3 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.btn-group-small {
    display: flex;
    gap: 0.35rem;
}

.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 0.5rem;
}

.scrollable-grid {
    max-height: 160px;
    overflow-y: auto;
    padding-right: 0.25rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.82rem;
    color: var(--text-secondary);
    cursor: pointer;
    user-select: none;
}

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

.checkbox-label input[type="checkbox"] {
    accent-color: var(--primary);
    width: 14px;
    height: 14px;
}

/* Curve Limits (Thresholds) Styles */
#btn-open-limits-modal {
    position: relative;
    transition: var(--transition-smooth);
}

#btn-open-limits-modal.has-limits {
    border-color: var(--primary);
    color: #93c5fd;
    background-color: rgba(59, 130, 246, 0.15);
    box-shadow: 0 0 8px rgba(59, 130, 246, 0.3);
}

#btn-open-limits-modal.has-limits::after {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: #3b82f6;
    margin-left: 4px;
    box-shadow: 0 0 6px #3b82f6;
    vertical-align: middle;
}

.limits-tab-indicator {
    padding: 0.5rem 0.75rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.limits-tab-indicator strong {
    color: var(--text-primary);
}

.limits-tip {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-left: 0.5rem;
}

.limits-section {
    margin-top: 0.8rem;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}

.limits-section-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.6rem;
}

.limit-color-dot {
    display: inline-block;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    margin-right: 4px;
    vertical-align: middle;
}

.limit-color-dot.upper-dot {
    background-color: #ef4444;
    box-shadow: 0 0 4px rgba(239, 68, 68, 0.6);
}

.limit-color-dot.lower-dot {
    background-color: #3b82f6;
    box-shadow: 0 0 4px rgba(59, 130, 246, 0.6);
}

.limit-color-dot.upper-right-dot {
    background-color: #f97316;
    box-shadow: 0 0 4px rgba(249, 115, 22, 0.6);
}

.limit-color-dot.lower-right-dot {
    background-color: #06b6d4;
    box-shadow: 0 0 4px rgba(6, 182, 212, 0.6);
}

/* ==========================================================================
   CDU Analytics Dashboard Styles
   ========================================================================== */

/* View Switcher in Header */
.view-switch-nav {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 3px;
    gap: 4px;
}

.view-switch-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 0.45rem 1rem;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
}

.view-switch-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.04);
}

.view-switch-btn.active {
    color: #fff;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.35), rgba(37, 99, 235, 0.2));
    border-color: rgba(59, 130, 246, 0.5);
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.25);
    font-weight: 600;
}

/* CDU Control Bar */
.cdu-control-bar {
    position: relative;
    z-index: 50;
    padding: 0.85rem 1.25rem;
    margin-bottom: 1.25rem;
}

.cdu-control-row {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    justify-content: space-between;
    gap: 1rem 1.5rem;
    width: 100%;
}

.cdu-filters-group {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: 0.75rem;
    flex: 1 1 auto;
}

.cdu-actions-group {
    display: flex;
    align-items: flex-end;
    gap: 0.5rem;
    flex-wrap: nowrap;
    margin-left: auto;
}

.cdu-control-item {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.cdu-device-item select {
    min-width: 140px;
    max-width: 220px;
    font-weight: 600;
    color: #38bdf8;
}

.cdu-batch-item select {
    min-width: 240px;
    max-width: 320px;
}

.cdu-btn-apply-item {
    justify-content: flex-end;
}

.cdu-btn-apply-item button {
    height: 36px;
    padding: 0 1.1rem;
    white-space: nowrap;
}

.cdu-actions-group button {
    height: 36px;
    white-space: nowrap;
}

.cdu-control-item label {
    font-size: 0.82rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

.cdu-control-item select,
.cdu-control-item input {
    height: 36px;
    padding: 0.35rem 0.6rem;
    font-size: 0.85rem;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.cdu-badge-row {
    display: flex;
    gap: 0.4rem;
    align-items: center;
    margin-top: 0.25rem;
}

.badge-mode {
    background: rgba(147, 51, 234, 0.18);
    color: #c084fc;
    border: 1px solid rgba(147, 51, 234, 0.3);
}

.cdu-toolbar-flex {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.cdu-toolbar-left,
.cdu-toolbar-right {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
}

.cdu-toolbar-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.cdu-toolbar-item label {
    font-size: 0.82rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

.cdu-toolbar-item select,
.cdu-toolbar-item input {
    height: 32px;
    padding: 0.25rem 0.5rem;
    font-size: 0.82rem;
}

/* CDU KPI Grid */
.cdu-kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.cdu-kpi-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem;
    position: relative;
    overflow: hidden;
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.cdu-kpi-card:hover {
    transform: translateY(-2px);
    border-color: rgba(59, 130, 246, 0.4);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}

.cdu-kpi-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.cdu-kpi-title {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.cdu-kpi-icon {
    font-size: 1.2rem;
    opacity: 0.8;
}

.cdu-kpi-val-row {
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.cdu-kpi-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    font-family: 'JetBrains Mono', 'Roboto Mono', monospace;
}

.cdu-kpi-unit {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.cdu-kpi-footer {
    margin-top: 0.4rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    display: flex;
    justify-content: space-between;
}

/* Sub-Tab Navigation for CDU Charts */
.cdu-tabs-nav {
    display: flex;
    gap: 0.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
    margin-bottom: 1rem;
    overflow-x: auto;
}

.cdu-tab-btn {
    padding: 0.45rem 0.9rem;
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.cdu-tab-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.04);
}

.cdu-tab-btn.active {
    color: #fff;
    background: rgba(59, 130, 246, 0.2);
    border-color: rgba(59, 130, 246, 0.4);
    font-weight: 600;
}

/* Curve toggles chips */
.cdu-curve-toggles {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
    padding: 0.5rem 0.75rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}

.cdu-toggle-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.78rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid transparent;
    user-select: none;
    transition: all 0.15s ease;
}

.cdu-toggle-chip:hover {
    background: rgba(255, 255, 255, 0.07);
    color: var(--text-primary);
}

.cdu-toggle-chip input[type="checkbox"] {
    accent-color: var(--primary);
    cursor: pointer;
}

.cdu-toggle-chip.active {
    background: rgba(59, 130, 246, 0.15);
    border-color: rgba(59, 130, 246, 0.3);
    color: var(--text-primary);
}

/* Alarm Statistical Analysis Section */
.cdu-alarm-stat-section {
    margin-bottom: 1.5rem;
}

.cdu-alarm-stat-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.cdu-alarm-kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.alarm-kpi-box {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.85rem 1rem;
}

.alarm-kpi-label {
    font-size: 0.78rem;
    color: var(--text-secondary);
    display: block;
    margin-bottom: 0.25rem;
}

.alarm-kpi-num {
    font-size: 1.4rem;
    font-weight: 700;
    font-family: 'JetBrains Mono', 'Roboto Mono', monospace;
    display: block;
    color: var(--text-primary);
}

.alarm-kpi-num.warning { color: #f59e0b; }
.alarm-kpi-num.info { color: #3b82f6; }
.alarm-kpi-num.success { color: #10b981; }
.alarm-kpi-num.danger { color: #ef4444; }

.cdu-export-dropdown {
    position: relative;
    display: inline-block;
    z-index: 60;
}

.cdu-alarm-kpi-box {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.85rem 1rem;
}

.cdu-alarm-kpi-box .title {
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.cdu-alarm-kpi-box .val {
    font-size: 1.4rem;
    font-weight: 700;
    font-family: 'JetBrains Mono', 'Roboto Mono', monospace;
}

.cdu-alarm-kpi-box .tip {
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.cdu-alarm-charts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
    margin-bottom: 1.25rem;
}

@media (max-width: 900px) {
    .cdu-alarm-charts-grid {
        grid-template-columns: 1fr;
    }
}

.card-sub {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 1rem;
}

.card-sub h4 {
    font-size: 0.88rem;
    margin-bottom: 0.8rem;
    color: var(--text-primary);
}

/* Dropdown Menu */
.dropdown-wrapper {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    position: absolute;
    right: 0;
    top: calc(100% + 6px);
    background: #181d28;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: var(--radius-sm);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.75), 0 0 1px rgba(255, 255, 255, 0.2);
    z-index: 1000;
    min-width: 195px;
    display: flex;
    flex-direction: column;
    padding: 6px 0;
    white-space: nowrap;
}

.dropdown-item {
    background: transparent;
    border: none;
    color: var(--text-primary);
    text-align: left;
    padding: 0.6rem 1rem;
    font-size: 0.84rem;
    cursor: pointer;
    transition: all 0.15s ease;
    width: 100%;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
}

.dropdown-item:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
}

.dropdown-item .icon {
    font-size: 0.95rem;
}

/* Multi-file Dropzone */
.cdu-upload-dropzone {
    border: 2px dashed rgba(255, 255, 255, 0.18);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.02);
    padding: 2.2rem 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-top: 1rem;
}

.cdu-upload-dropzone:hover,
.cdu-upload-dropzone.dragover {
    border-color: var(--primary);
    background: rgba(59, 130, 246, 0.08);
}

.dropzone-icon {
    font-size: 2.5rem;
    margin-bottom: 0.6rem;
}

.cdu-upload-dropzone h4 {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 0.4rem;
}

.cdu-file-list {
    list-style: none;
    padding: 0;
    margin: 0.5rem 0 0 0;
    max-height: 180px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: rgba(0, 0, 0, 0.2);
}

.cdu-file-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0.8rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 0.82rem;
}

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

.cdu-file-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.cdu-file-name {
    color: var(--text-primary);
    font-weight: 500;
}

.cdu-file-size {
    color: var(--text-muted);
    font-size: 0.75rem;
}

.cdu-file-actions {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-shrink: 0;
}

.cdu-file-device-select {
    height: 28px;
    padding: 0.15rem 0.45rem;
    font-size: 0.78rem;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: #38bdf8;
    font-weight: 500;
}

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

.cdu-file-remove {
    background: none;
    border: none;
    color: #ef4444;
    cursor: pointer;
    font-size: 1.1rem;
    padding: 0 4px;
    opacity: 0.7;
    transition: opacity 0.15s;
}

.cdu-file-remove:hover {
    opacity: 1;
}

/* Badges for alarms */
.badge-danger {
    background: rgba(239, 68, 68, 0.18);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.18);
    color: #f59e0b;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-info {
    background: rgba(59, 130, 246, 0.18);
    color: #60a5fa;
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.badge-success {
    background: rgba(16, 185, 129, 0.18);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

/* ==========================================================================
   Test Start & End (ST / ET) Markers Modal & UI Styles
   ========================================================================== */

.btn-test-marker-entry {
    white-space: nowrap !important;
    flex-shrink: 0;
    transition: all 0.2s ease;
}

.btn-test-marker-entry.badge-test-marker-active {
    background: rgba(6, 182, 212, 0.15) !important;
    color: #38bdf8 !important;
    border: 1px dashed rgba(6, 182, 212, 0.65) !important;
    font-family: 'JetBrains Mono', -apple-system, sans-serif;
    font-weight: 600;
    padding: 0.32rem 0.75rem;
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.15);
}

.btn-test-marker-entry.badge-test-marker-active:hover {
    background: rgba(6, 182, 212, 0.25) !important;
    border-color: #38bdf8 !important;
    box-shadow: 0 0 14px rgba(6, 182, 212, 0.35);
}

.badge-test-marker {
    background: rgba(6, 182, 212, 0.15);
    color: #38bdf8;
    border: 1px dashed rgba(6, 182, 212, 0.45);
    border-radius: var(--radius-sm);
    padding: 0.25rem 0.55rem;
    font-size: 0.78rem;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    white-space: nowrap !important;
}

.badge-test-marker:hover {
    background: rgba(6, 182, 212, 0.25);
    border-color: #38bdf8;
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.3);
}

.test-markers-modal-content {
    max-width: 660px;
    width: 95vw;
}

.test-marker-toggle-row {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    margin-bottom: 1.25rem;
}

.toggle-checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    cursor: pointer;
    font-size: 0.88rem;
    color: var(--text-primary);
    font-weight: 500;
}

.toggle-checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary);
    cursor: pointer;
}

.test-marker-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
    margin-bottom: 1.25rem;
}

@media (max-width: 640px) {
    .test-marker-grid {
        grid-template-columns: 1fr;
    }
}

.test-marker-card {
    border-radius: var(--radius-md);
    padding: 1.1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    transition: all 0.2s ease;
}

.test-marker-card.st-card {
    background: rgba(6, 182, 212, 0.05);
    border: 1px solid rgba(6, 182, 212, 0.3);
}

.test-marker-card.st-card:focus-within {
    border-color: #06b6d4;
    box-shadow: 0 0 12px rgba(6, 182, 212, 0.25);
}

.test-marker-card.et-card {
    background: rgba(245, 158, 11, 0.05);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.test-marker-card.et-card:focus-within {
    border-color: #f59e0b;
    box-shadow: 0 0 12px rgba(245, 158, 11, 0.25);
}

.marker-card-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.marker-badge {
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.15rem 0.45rem;
    border-radius: 4px;
    letter-spacing: 0.5px;
}

.marker-badge.st-badge {
    background: #0891b2;
    color: #ffffff;
    box-shadow: 0 2px 6px rgba(8, 145, 178, 0.4);
}

.marker-badge.et-badge {
    background: #d97706;
    color: #ffffff;
    box-shadow: 0 2px 6px rgba(217, 119, 6, 0.4);
}

.marker-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
}

.marker-input-wrap input[type="datetime-local"] {
    width: 100%;
    height: 38px;
    padding: 0.35rem 0.65rem;
    font-size: 0.88rem;
    font-family: 'JetBrains Mono', monospace;
    border-radius: var(--radius-sm);
    background: rgba(20, 26, 38, 0.8);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.marker-quick-actions {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
}

.btn-xs {
    padding: 0.25rem 0.5rem;
    font-size: 0.74rem;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.15s ease;
    white-space: nowrap;
}

.btn-outline {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--text-secondary);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.12);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.3);
}

.test-marker-stats-bar {
    background: rgba(20, 26, 38, 0.7);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.85rem 1.1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.test-marker-stats-bar .stats-icon {
    font-size: 1.6rem;
    flex-shrink: 0;
}

.test-marker-stats-bar .stats-main {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text-primary);
    font-family: 'JetBrains Mono', monospace;
}

.test-marker-stats-bar .stats-sub {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 0.2rem;
}

.test-marker-options-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}

.marker-pos-select-wrap {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.form-select-sm {
    height: 30px;
    padding: 0 0.5rem;
    font-size: 0.8rem;
    background: rgba(20, 26, 38, 0.8);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
}