:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #121212;
    --bg-tertiary: #1e1e1e;
    --bg-card: #1a1a1a;
    --bg-element: #252525;
    --border-color: #333333;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --text-muted: #6c757d;
    --primary-color: #6c63ff;
    --secondary-color: #5752d4;
    --success-color: #4caf50;
    --danger-color: #f44336;
    --warning-color: #ff9800;
    --info-color: #2196f3;
    --border-radius: 8px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --transition: all 0.3s ease;
}

/* Dark Theme Base */
body.dark-theme {
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
    min-height: 100vh;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-primary);
}

.main-container {
    padding: 20px;
    max-width: 1400px;
}

/* Header Section */
.header-section {
    padding: 20px 0;
}

.app-title {
    color: var(--primary-color);
    font-weight: 700;
    margin-bottom: 10px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.app-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Cards */
.connection-card, .tabs-card {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    background-color: var(--bg-card);
}

.dark-card-header {
    background: linear-gradient(135deg, var(--bg-element) 0%, var(--bg-tertiary) 100%);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 15px 20px;
}

.dark-card-body {
    background-color: var(--bg-card);
    color: var(--text-primary);
}

.dark-tabs-card {
    background-color: var(--bg-card);
}

.dark-tabs-header {
    background-color: var(--bg-element);
    border-bottom: 1px solid var(--border-color);
    padding: 0;
}

/* Connection Toggle */
.connection-toggle {
    display: flex;
    justify-content: center;
    align-items: center;
}

.big-switch {
    width: 60px;
    height: 30px;
    margin-right: 10px;
    background-color: var(--bg-element);
    border: 1px solid var(--border-color);
}

.big-switch:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.toggle-label {
    font-weight: 600;
    margin-right: 5px;
    color: var(--text-primary);
}

.toggle-status {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Tabs */
.dark-nav-tabs {
    border-bottom: 1px solid var(--border-color);
}

.dark-nav-tabs .nav-link {
    border: none;
    border-radius: 0;
    padding: 12px 20px;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
    display: flex;
    align-items: center;
    background-color: transparent;
}

.dark-nav-tabs .nav-link i {
    margin-right: 8px;
    font-size: 1.1rem;
}

.dark-nav-tabs .nav-link:hover {
    border: none;
    color: var(--primary-color);
    background-color: rgba(108, 99, 255, 0.1);
}

.dark-nav-tabs .nav-link.active {
    background-color: var(--bg-card);
    color: var(--primary-color);
    border-bottom: 3px solid var(--primary-color);
    font-weight: 600;
}

/* Tab Content */
.dark-tab-content {
    background-color: var(--bg-card);
    color: var(--text-primary);
}

.tab-pane-header {
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.tab-pane-header h4 {
    color: var(--primary-color);
    display: flex;
    align-items: center;
}

.tab-pane-header h4 i {
    margin-right: 10px;
}

/* Subscription Controls */
.subscription-controls {
    display: flex;
    gap: 10px;
}

.subscription-controls .btn {
    border-radius: 6px;
    padding: 8px 16px;
    font-weight: 500;
    display: flex;
    align-items: center;
    transition: var(--transition);
}

.subscription-controls .btn i {
    margin-right: 5px;
}

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

.dark-btn-primary:hover {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

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

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

/* Payload Controls */
.dark-form-label {
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.dark-input-group {
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    border-radius: 6px;
}

.dark-input-text {
    background-color: var(--bg-element);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.dark-form-control {
    background-color: var(--bg-element);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 10px 15px;
    transition: var(--transition);
}

.dark-form-control:focus {
    background-color: var(--bg-element);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(108, 99, 255, 0.25);
    color: var(--text-primary);
}

.dark-form-control::placeholder {
    color: var(--text-muted);
}

.payload-controls .btn {
    border-radius: 0 6px 6px 0;
    padding: 10px 15px;
    font-weight: 500;
    display: flex;
    align-items: center;
}

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

.dark-btn-success:hover {
    background-color: #3d8b40;
    border-color: #3d8b40;
}

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

.dark-btn-danger:hover {
    background-color: #d32f2f;
    border-color: #d32f2f;
}

/* Messages Section */
.messages-section {
    margin-top: 30px;
}

.messages-header {
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.messages-header h4 {
    color: var(--text-primary);
    display: flex;
    align-items: center;
}

.messages-header h4 i {
    margin-right: 10px;
    color: var(--primary-color);
}

.message-container h5 {
    color: var(--text-secondary);
    font-weight: 600;
}

.dark-table-container {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    background-color: var(--bg-element);
}

.dark-table {
    margin-bottom: 0;
    border-collapse: separate;
    border-spacing: 0;
    background-color: var(--bg-element);
    color: var(--text-primary);
}

.dark-table-header {
    background-color: var(--bg-tertiary);
    border-bottom: 2px solid var(--border-color);
}

.dark-table-header th {
    font-weight: 600;
    color: var(--text-primary);
    padding: 12px 15px;
    border-bottom: 1px solid var(--border-color);
}

.dark-table-body td {
    padding: 12px 15px;
    vertical-align: middle;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-element);
    color: var(--text-primary);
}

.dark-table-body tr:hover {
    background-color: rgba(108, 99, 255, 0.1);
}

/* Toggle Button in Messages */
.toggle-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    padding: 5px 10px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.toggle-btn:hover {
    background-color: var(--secondary-color);
    transform: scale(1.05);
}

/* Message Details */
.details {
    display: none;
    padding: 15px;
    background-color: var(--bg-tertiary);
    border-radius: 6px;
    border: 1px solid var(--border-color);
    margin-top: 10px;
}

.details pre {
    margin: 0;
    white-space: pre-wrap;
    word-wrap: break-word;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.4;
    color: var(--text-primary);
    background-color: transparent;
    border: none;
    padding: 0;
}

/* Status Indicators */
.connection-status {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 5px;
}

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

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

/* Alerts */
.dark-alert-info {
    background-color: rgba(33, 150, 243, 0.1);
    border-color: rgba(33, 150, 243, 0.3);
    color: var(--info-color);
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .main-container {
        padding: 10px;
    }

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

    .payload-controls .input-group {
        flex-direction: column;
    }

    .payload-controls .btn {
        border-radius: 0 0 6px 6px;
        margin-top: 5px;
        width: 100%;
        justify-content: center;
    }

    .dark-nav-tabs .nav-link {
        padding: 10px 15px;
        font-size: 0.9rem;
    }

    .messages-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .messages-header .btn {
        margin-top: 10px;
    }
}

/* Animation for new messages */
@keyframes highlightNew {
    0% {
        background-color: rgba(76, 175, 80, 0.3);
    }
    100% {
        background-color: transparent;
    }
}

.highlight-new {
    animation: highlightNew 2s ease;
}

/* Toast notifications */
.toast-container {
    z-index: 9999;
}

.toast {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.toast-header {
    background-color: var(--bg-element);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

/* No Script Warning */
.noscript-warning {
    background-color: #2d1b1b;
    color: #ff6b6b;
    padding: 20px;
    text-align: center;
    border-radius: var(--border-radius);
    margin: 20px;
    box-shadow: var(--box-shadow);
    border: 1px solid #5a2e2e;
}

/* Scrollbar Styling for Dark Theme */
::-webkit-scrollbar {
    width: 8px;
}

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

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

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