/* KNX Multitool - Complete Styles with Dark Mode */

/* ============================================================================
   CSS VARIABLES
   ============================================================================ */

:root {
    /* Colors - Light Mode */
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --success: #10b981;
    --success-hover: #059669;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --warning: #f59e0b;
    --warning-hover: #d97706;
    --secondary: #6b7280;
    --secondary-hover: #4b5563;
    
    /* Backgrounds */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --bg-hover: #e5e7eb;
    
    /* Text */
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-inverse: #ffffff;
    
    /* Borders */
    --border: #e5e7eb;
    --border-hover: #d1d5db;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    
    /* Transitions */
    --transition: all 0.2s ease;
}

/* Dark Mode Variables */
[data-theme="dark"] {
    --bg-primary: #1f2937;
    --bg-secondary: #111827;
    --bg-tertiary: #374151;
    --bg-hover: #4b5563;
    
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-inverse: #111827;
    
    --border: #374151;
    --border-hover: #4b5563;
    
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow: 0 1px 3px rgba(0,0,0,0.4);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.4);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.5);
}

/* ============================================================================
   RESET & BASE
   ============================================================================ */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
    background: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

.container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 20px;
}

/* ============================================================================
   HEADER
   ============================================================================ */

header {
    background: var(--bg-primary);
    padding: 20px 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

header h1 {
    font-size: 28px;
    color: var(--text-primary);
    margin: 0;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.lang-select {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
}

.lang-select:hover {
    border-color: var(--primary);
}

.icon-btn {
    width: 40px;
    height: 40px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 20px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.btn-logout {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 14px;
    border: 1px solid var(--danger);
    border-radius: 8px;
    background: transparent;
    color: var(--danger);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn-logout:hover {
    background: var(--danger);
    color: var(--text-inverse);
}

.status-bar {
    display: flex;
    gap: 25px;
}

.status-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.status-item .label {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 14px;
}

.status {
    font-size: 0;
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--secondary);
    transition: var(--transition);
}

.status.active {
    background: var(--success);
    box-shadow: 0 0 8px var(--success);
}

.status.error {
    background: var(--danger);
    box-shadow: 0 0 8px var(--danger);
}

/* ============================================================================
   PROJECT BAR
   ============================================================================ */

.project-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    margin-bottom: 12px;
    background: var(--primary);
    color: var(--text-inverse);
    border-radius: 8px;
    font-size: 14px;
}

.project-bar.hidden {
    display: none;
}

.project-bar-label {
    opacity: 0.85;
}

.project-bar strong {
    font-size: 15px;
}

.project-bar .btn-outline {
    margin-left: auto;
    padding: 4px 12px;
    font-size: 12px;
    background: transparent;
    border: 1px solid rgba(255,255,255,0.5);
    color: var(--text-inverse);
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
}

.project-bar .btn-outline:hover {
    background: rgba(255,255,255,0.15);
    border-color: rgba(255,255,255,0.8);
}

/* Active badge in installations table */
.badge-active {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
    background: var(--success);
    color: white;
}

.badge-inactive {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 11px;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
}

.project-data-counts {
    display: flex;
    gap: 8px;
    margin-top: 4px;
    font-size: 11px;
    color: var(--text-secondary);
}

.data-count-item {
    display: inline-flex;
    align-items: center;
    gap: 2px;
}

.data-count-item::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--secondary);
    margin-right: 3px;
    flex-shrink: 0;
}

.purge-x {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 14px;
    height: 14px;
    padding: 0;
    border: none;
    border-radius: 50%;
    background: var(--danger);
    color: white;
    font-size: 10px;
    line-height: 1;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 0.15s;
    margin-left: 2px;
}

.purge-x:hover {
    opacity: 1;
}

.btn-group-vertical {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.btn-row {
    display: flex;
    gap: 4px;
    flex-wrap: nowrap;
}

.btn-warning {
    background: var(--warning);
    color: #fff;
    border: none;
}

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

/* ============================================================================
   NAVIGATION TABS
   ============================================================================ */

.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    overflow-x: auto;
    padding-bottom: 5px;
}

.tab-btn {
    padding: 12px 24px;
    background: var(--bg-primary);
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
    white-space: nowrap;
}

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

.tab-btn.active {
    background: var(--primary);
    color: var(--text-inverse);
}

/* ============================================================================
   TAB CONTENT
   ============================================================================ */

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* ============================================================================
   PANELS
   ============================================================================ */

.panel {
    background: var(--bg-primary);
    border-radius: 10px;
    padding: 25px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

.panel h2 {
    font-size: 22px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.panel h3 {
    font-size: 18px;
    margin: 25px 0 15px;
    color: var(--text-primary);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.panel-header h2 {
    margin: 0;
}

/* ============================================================================
   BUTTONS
   ============================================================================ */

.controls {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

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

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

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

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

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

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

.btn-warning {
    background: var(--warning);
    color: var(--text-inverse);
}

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

.btn-secondary {
    background: var(--secondary);
    color: var(--text-inverse);
}

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

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

.btn-group {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

/* ============================================================================
   FORMS
   ============================================================================ */

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

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

.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="password"],
.form-group input[type="file"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition);
}

.form-group input[type="text"]:focus,
.form-group input[type="number"]:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group small {
    display: block;
    margin-top: 5px;
    color: var(--text-secondary);
    font-size: 13px;
}

/* GA Search Dropdown */
.ga-search-wrapper {
    position: relative;
}

.ga-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    max-height: 280px;
    overflow-y: auto;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-top: none;
    border-radius: 0 0 8px 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    z-index: 100;
}

.ga-dropdown.visible {
    display: block;
}

.ga-dropdown-item {
    display: flex;
    align-items: baseline;
    gap: 10px;
    padding: 8px 12px;
    cursor: pointer;
    border-bottom: 1px solid var(--bg-tertiary);
    transition: background 0.1s;
}

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

.ga-dropdown-item:hover,
.ga-dropdown-item.highlighted {
    background: var(--primary);
    color: var(--text-inverse);
}

.ga-dropdown-item:hover .ga-item-name,
.ga-dropdown-item.highlighted .ga-item-name,
.ga-dropdown-item:hover .ga-item-desc,
.ga-dropdown-item.highlighted .ga-item-desc {
    color: var(--text-inverse);
}

.ga-item-addr {
    font-family: monospace;
    font-weight: 600;
    white-space: nowrap;
    min-width: 60px;
}

.ga-item-name {
    color: var(--text-primary);
    font-size: 13px;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.ga-item-desc {
    color: var(--text-secondary);
    font-size: 12px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 200px;
}

.ga-dropdown-empty {
    padding: 12px;
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
}

/* Password input with toggle button */
.password-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.password-input-wrapper input {
    flex: 1;
    padding-right: 45px;
}

.password-toggle-btn {
    position: absolute;
    right: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px 12px;
    font-size: 18px;
    border-radius: 4px;
    transition: var(--transition);
    opacity: 0.6;
    user-select: none;
}

.password-toggle-btn:hover {
    opacity: 1;
    background: var(--bg-hover);
}

.password-toggle-btn:active {
    transform: scale(0.95);
}

.form-group textarea {
    font-family: 'Courier New', monospace;
    resize: vertical;
    min-height: 100px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 25px;
    flex-wrap: wrap;
}

/* ============================================================================
   TOGGLE SWITCHES
   ============================================================================ */

.toggle-group {
    padding: 15px;
    background: var(--bg-tertiary);
    border-radius: 6px;
    margin-bottom: 15px;
}

.toggle-container {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    user-select: none;
}

.toggle-container input[type="checkbox"] {
    display: none;
}

.toggle-slider {
    position: relative;
    width: 50px;
    height: 26px;
    background: var(--secondary);
    border-radius: 34px;
    transition: var(--transition);
}

.toggle-slider::before {
    content: "";
    position: absolute;
    height: 20px;
    width: 20px;
    left: 3px;
    bottom: 3px;
    background: white;
    border-radius: 50%;
    transition: var(--transition);
}

.toggle-container input:checked + .toggle-slider {
    background: var(--success);
}

.toggle-container input:checked + .toggle-slider::before {
    transform: translateX(24px);
}

.toggle-label {
    font-weight: 500;
    color: var(--text-primary);
}

.toggle-hint {
    display: block;
    margin-top: 8px;
    margin-left: 62px;
    color: var(--text-secondary);
    font-size: 13px;
}

/* ============================================================================
   FILTERS
   ============================================================================ */

.filters {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.filters input,
.filters select {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition);
}

.filters input {
    flex: 1;
    min-width: 150px;
}

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

/* ============================================================================
   STATISTICS
   ============================================================================ */

.stats {
    display: flex;
    gap: 30px;
    padding: 15px;
    background: var(--bg-tertiary);
    border-radius: 6px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-label {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

/* ============================================================================
   TABLES
   ============================================================================ */

.table-container {
    max-height: 600px;
    overflow-y: auto;
    border: 1px solid var(--border);
    border-radius: 6px;
}

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

thead {
    position: sticky;
    top: 0;
    background: var(--bg-tertiary);
    z-index: 10;
}

th {
    padding: 12px;
    text-align: left;
    font-weight: 600;
    border-bottom: 2px solid var(--border);
    color: var(--text-primary);
}

td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    color: var(--text-primary);
}

tbody tr:hover {
    background: var(--bg-hover);
}

tbody tr.telegram-new {
    animation: pulse 0.5s ease-in-out;
    background: rgba(37, 99, 235, 0.1) !important;
}

/* Specific column styles */
td:nth-child(1) {
    font-family: 'Courier New', monospace;
    font-size: 12px;
    color: var(--text-secondary);
    white-space: nowrap;
}

td.monospace {
    font-family: 'Courier New', monospace;
    font-size: 12px;
}

td.bold {
    font-weight: 600;
}

td.decoded-value {
    font-weight: 600;
    color: var(--primary);
    white-space: nowrap;
}

.dpt-badge {
    display: inline-block;
    font-size: 10px;
    font-weight: 400;
    color: var(--text-secondary);
    background: var(--bg-secondary, rgba(100,100,100,0.15));
    border-radius: 4px;
    padding: 1px 5px;
    margin-left: 4px;
    vertical-align: middle;
}

td.success {
    color: var(--success);
}

td.error {
    color: var(--danger);
}

/* ============================================================================
   OUTPUT BOX
   ============================================================================ */

.output-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    padding: 15px;
    border-radius: 6px;
    font-family: 'Courier New', monospace;
    font-size: 13px;
    max-height: 300px;
    overflow-y: auto;
    margin-top: 15px;
    color: var(--text-primary);
}

[data-theme="dark"] .output-box {
    background: #0d1117;
    color: var(--success);
}

/* ============================================================================
   SYSTEM HEALTH
   ============================================================================ */

.health-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.health-card {
    padding: 15px;
    background: var(--bg-tertiary);
    border-radius: 6px;
    text-align: center;
}

.health-card .label {
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    margin-bottom: 8px;
}

.health-card .value {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
}

.health-card .unit {
    font-size: 16px;
    color: var(--text-secondary);
    margin-left: 4px;
}

.health-card.warning .value {
    color: var(--warning);
}

.health-card.danger .value {
    color: var(--danger);
}

/* ============================================================================
   CHART CONTAINER
   ============================================================================ */

.chart-container {
    position: relative;
    height: 300px;
    margin: 20px 0;
}

/* ============================================================================
   FILE UPLOAD
   ============================================================================ */

.file-upload {
    border: 2px dashed var(--border);
    border-radius: 6px;
    padding: 30px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.file-upload:hover {
    border-color: var(--primary);
    background: var(--bg-hover);
}

.file-upload input[type="file"] {
    display: none;
}

.file-upload-label {
    cursor: pointer;
    color: var(--text-secondary);
}

.file-upload-label:hover {
    color: var(--primary);
}

/* ============================================================================
   BADGES
   ============================================================================ */

.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

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

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

.badge-warning {
    background: var(--warning);
    color: white;
}

.badge-secondary {
    background: var(--secondary);
    color: white;
}

/* ============================================================================
   NOTIFICATIONS
   ============================================================================ */

.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 15px 20px;
    border-radius: 6px;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    animation: slideIn 0.3s ease-out;
    max-width: 400px;
}

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

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

.notification.warning {
    background: var(--warning);
    color: white;
}

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

/* ============================================================================
   MODAL
   ============================================================================ */

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

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: 10px;
    padding: 30px;
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-secondary);
}

/* ============================================================================
   SCROLLBAR
   ============================================================================ */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

::-webkit-scrollbar-thumb {
    background: var(--secondary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* ============================================================================
   ANIMATIONS
   ============================================================================ */

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

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(400px);
        opacity: 0;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* ============================================================================
   TOPOLOGY GRAPH
   ============================================================================ */

.topology-graph-container {
    position: relative;
    height: 600px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-secondary);
    overflow: hidden;
}

[data-theme="dark"] .topology-graph-container {
    background: #0d1117;
}

.topology-graph-container.topology-fullscreen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 999;
    border-radius: 0;
    border: none;
}

.topology-controls {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
    align-items: center;
    flex-wrap: wrap;
    padding: 10px 15px;
    background: var(--bg-tertiary);
    border-radius: 6px;
}

.topology-search {
    flex: 1;
    min-width: 200px;
}

.topology-search input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition);
}

.topology-search input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.topology-layout-selector,
.topology-filter {
    display: flex;
    align-items: center;
    gap: 8px;
}

.topology-layout-selector label,
.topology-filter label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
}

.topology-layout-selector select,
.topology-filter select {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
}

.topology-toggle {
    margin: 0;
    flex-shrink: 0;
}

.topology-stats {
    display: flex;
    gap: 30px;
    padding: 12px 15px;
    background: var(--bg-tertiary);
    border-radius: 6px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.topology-empty {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-secondary);
    font-size: 16px;
    text-align: center;
    padding: 40px;
}

.topology-detail {
    margin-top: 15px;
    padding: 15px;
    background: var(--bg-tertiary);
    border-radius: 6px;
    border-left: 4px solid var(--primary);
}

.topology-detail h3 {
    margin: 0 0 10px 0;
    font-size: 16px;
    color: var(--text-primary);
}

.topology-detail .detail-row {
    padding: 4px 0;
    font-size: 14px;
    color: var(--text-primary);
}

.topology-detail .detail-row strong {
    color: var(--text-secondary);
    margin-right: 6px;
}


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

@media (max-width: 768px) {
    header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .header-controls {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
    }
    
    .status-bar {
        flex-wrap: wrap;
        width: 100%;
    }
    
    .tabs {
        overflow-x: auto;
    }
    
    .filters {
        flex-direction: column;
    }
    
    .filters input {
        width: 100%;
    }
    
    .stats {
        flex-direction: column;
        gap: 15px;
    }
    
    .controls {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }

    .topology-graph-container {
        height: 400px;
    }

    .topology-controls {
        flex-direction: column;
    }
}

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

.hidden {
    display: none !important;
}

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

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

.mt-10 {
    margin-top: 10px;
}

.mt-20 {
    margin-top: 20px;
}

.mb-10 {
    margin-bottom: 10px;
}

.mb-20 {
    margin-bottom: 20px;
}

/* ============================================================================
   DHCP STATUS DISPLAY
   ============================================================================ */

.info-box {
    background: var(--bg-secondary);
    border-left: 4px solid var(--primary);
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 20px;
}

.info-box p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.status-display {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: 6px;
}

.status-badge {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
}

.status-badge.status-active {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    border: 1px solid var(--success);
}

.status-badge.status-inactive {
    background: rgba(107, 114, 128, 0.1);
    color: var(--secondary);
    border: 1px solid var(--secondary);
}

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

[data-theme="dark"] .status-badge.status-active {
    background: rgba(16, 185, 129, 0.2);
}

[data-theme="dark"] .status-badge.status-inactive {
    background: rgba(107, 114, 128, 0.2);
}

[data-theme="dark"] .status-badge.status-error {
    background: rgba(239, 68, 68, 0.2);
}

.status-badge.status-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
    border: 1px solid var(--warning);
}

[data-theme="dark"] .status-badge.status-warning {
    background: rgba(245, 158, 11, 0.2);
}

/* ============================================================================
   ALERT BOX
   ============================================================================ */

.alert-box {
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 16px;
    border-left: 4px solid;
}

.alert-box.warning {
    background: rgba(245, 158, 11, 0.1);
    border-color: var(--warning);
    color: var(--text-primary);
}

.alert-box.info {
    background: rgba(37, 99, 235, 0.1);
    border-color: var(--primary);
    color: var(--text-primary);
}

.alert-box.error {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--danger);
    color: var(--text-primary);
}

.alert-box strong {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
}

.alert-box p {
    margin: 0;
    font-size: 0.95rem;
}

[data-theme="dark"] .alert-box.warning {
    background: rgba(245, 158, 11, 0.2);
}

[data-theme="dark"] .alert-box.info {
    background: rgba(37, 99, 235, 0.2);
}

[data-theme="dark"] .alert-box.error {
    background: rgba(239, 68, 68, 0.2);
}

/* ============================================================================
   USB DEVICE BADGE
   ============================================================================ */

.usb-badge {
    display: inline-block;
    margin-left: 8px;
    padding: 2px 8px;
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    border: 1px solid var(--success);
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    vertical-align: middle;
}

[data-theme="dark"] .usb-badge {
    background: rgba(16, 185, 129, 0.2);
}

/* Pulse animation for new devices */
@keyframes pulse-usb {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.6;
    }
}

.usb-badge.new {
    animation: pulse-usb 1s ease-in-out 3;
}

/* ============================================================================
   VERSION BADGE
   ============================================================================ */

.version-badge {
    display: inline-block;
    font-size: 0.5em;
    font-weight: 400;
    padding: 2px 8px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    border: 1px solid var(--primary);
    border-radius: 12px;
    margin-left: 10px;
    vertical-align: middle;
    opacity: 0.7;
    transition: var(--transition);
}

.version-badge:hover {
    opacity: 1;
    cursor: help;
}

[data-theme="dark"] .version-badge {
    background: rgba(37, 99, 235, 0.2);
}

/* ============================================================================
   WIREGUARD - DNS BANNER
   ============================================================================ */

.dns-banner {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(16, 185, 129, 0.1));
    border: 2px solid var(--primary);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.15);
}

.dns-banner-icon {
    font-size: 48px;
    flex-shrink: 0;
}

.dns-banner-content {
    flex: 1;
}

.dns-banner-content h3 {
    margin: 0 0 8px 0;
    font-size: 18px;
    color: var(--text-primary);
}

.dns-address {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 8px 0;
}

.dns-address strong {
    font-size: 20px;
    color: var(--primary);
    font-family: 'Courier New', monospace;
}

.btn-copy {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 4px 8px;
    cursor: pointer;
    font-size: 16px;
    transition: var(--transition);
}

.btn-copy:hover {
    background: var(--primary);
    border-color: var(--primary);
    transform: scale(1.1);
}

.dns-banner-content small {
    color: var(--text-secondary);
    font-size: 13px;
}

.dns-banner-status {
    flex-shrink: 0;
}

/* ============================================================================
   WIREGUARD - STATUS GRID
   ============================================================================ */

.wg-status-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin: 20px 0;
}

.wg-stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: var(--transition);
}

.wg-stat-card:hover {
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.1);
}

.wg-stat-icon {
    font-size: 32px;
    flex-shrink: 0;
}

.wg-stat-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.wg-stat-content label {
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.wg-stat-value {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

/* ============================================================================
   WIREGUARD - PEER INFO
   ============================================================================ */

.wg-peer-section {
    margin-top: 25px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.wg-peer-section h3 {
    font-size: 16px;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.wg-peer-details {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 15px;
}

.wg-peer-row {
    display: flex;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
}

.wg-peer-row:last-child {
    border-bottom: none;
}

.wg-peer-label {
    font-weight: 500;
    color: var(--text-secondary);
    min-width: 140px;
    flex-shrink: 0;
}

.wg-peer-value {
    color: var(--text-primary);
    word-break: break-all;
}

.wg-key {
    font-family: 'Courier New', monospace;
    font-size: 13px;
    opacity: 0.8;
}

/* ============================================================================
   WIREGUARD - RESPONSIVE
   ============================================================================ */

@media (max-width: 768px) {
    .wg-status-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .dns-banner {
        flex-direction: column;
        text-align: center;
    }
    
    .dns-address {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .wg-status-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================================================
   STATUS BADGE VARIANTS
   ============================================================================ */

.status-badge-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
}

.status-badge-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid #f59e0b;
    color: #f59e0b;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
}

.btn-info {
    background: #3b82f6;
    color: white;
}

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

.btn-warning {
    background: #f59e0b;
    color: white;
}

.btn-warning:hover {
    background: #d97706;
}

/* ============================================================================
   WIREGUARD - DYNAMIC CONTROLS
   ============================================================================ */

.wg-control-card {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-primary));
    border: 2px solid var(--border);
    border-radius: 12px;
    padding: 25px;
    margin-top: 25px;
    transition: all 0.3s ease;
}

.wg-control-card:hover {
    border-color: var(--primary);
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.15);
}

.wg-control-status {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.wg-control-icon {
    font-size: 48px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.05); }
}

.wg-control-icon.connected {
    animation: pulse-green 2s ease-in-out infinite;
}

@keyframes pulse-green {
    0%, 100% { opacity: 1; transform: scale(1); filter: drop-shadow(0 0 8px var(--success)); }
    50% { opacity: 0.9; transform: scale(1.1); filter: drop-shadow(0 0 12px var(--success)); }
}

.wg-control-info {
    flex: 1;
}

.wg-control-info h3 {
    margin: 0 0 8px 0;
    font-size: 18px;
    color: var(--text-primary);
}

.wg-status-text {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
}

.wg-status-text.connected {
    color: var(--success);
}

.wg-status-text.disconnected {
    color: var(--text-secondary);
}

.wg-uptime {
    margin: 8px 0 0 0;
    color: var(--text-secondary);
    font-size: 14px;
}

.wg-uptime small {
    margin-right: 5px;
}

.wg-uptime-value {
    font-weight: 600;
    color: var(--primary);
}

.wg-control-actions {
    position: relative;
    min-height: 50px;
}

.wg-actions-group {
    display: flex;
    gap: 10px;
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.btn-large {
    padding: 14px 28px;
    font-size: 16px;
    font-weight: 600;
}

.wg-animate {
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.wg-animate:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.wg-animate:active {
    transform: translateY(0);
}

.wg-animate.loading {
    pointer-events: none;
    opacity: 0.7;
}

.btn-content,
.btn-loader {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-loader {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: inherit;
    animation: fadeIn 0.2s ease-in-out;
}

.btn-icon {
    font-size: 20px;
}

/* Spinner animation */
.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Loading state animations */
@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

.wg-animate.loading::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.1),
        transparent
    );
    animation: shimmer 1.5s infinite;
}

/* Responsive */
@media (max-width: 768px) {
    .wg-actions-group {
        flex-direction: column;
    }
    
    .wg-control-status {
        flex-direction: column;
        text-align: center;
    }
}

/* PWA - Offline Banner & Install Button */
.offline-banner {
    background: var(--warning, #f59e0b);
    color: #000;
    text-align: center;
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    position: sticky;
    top: 0;
    z-index: 999;
}

#pwa-install-btn {
    font-size: 18px;
}

/* ETS6 encrypted warning */
.ets6-warning {
    background: #fff8e1;
    border-left: 4px solid #f59e0b;
    border-radius: 4px;
    padding: 12px 16px;
    margin-top: 8px;
    font-size: 14px;
    line-height: 1.5;
}
.ets6-warning strong { display: block; margin-bottom: 6px; font-size: 15px; }
.ets6-warning p { margin: 4px 0; }
.ets6-warning ol { margin: 6px 0 0 18px; padding: 0; }
.ets6-warning li { margin: 3px 0; }
.ets6-warning kbd {
    background: #eee;
    border: 1px solid #ccc;
    border-radius: 3px;
    padding: 1px 5px;
    font-size: 12px;
}