/* ==============================================
   RTI Demo UI - Modern Stylesheet
   ============================================== */

:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary-color: #7c3aed;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #0ea5e9;
    
    --bg-dark: #0f172a;
    --bg-darker: #020617;
    --bg-card: #1e293b;
    --bg-hover: #334155;
    
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    
    --border-color: #334155;
    --border-light: #475569;
    
    --sidebar-width: 280px;
    --header-height: 70px;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow: hidden;
}

/* ==============================================
   Layout
   ============================================== */

.container {
    display: flex;
    height: 100vh;
    background: var(--bg-dark);
}

/* ==============================================
   Sidebar
   ============================================== */

.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-darker);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    box-shadow: var(--shadow-md);
}

.sidebar-header {
    padding: 30px 24px;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-light);
    margin-bottom: 8px;
}

.logo i {
    font-size: 28px;
}

.subtitle {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.sidebar-nav {
    flex: 1;
    padding: 20px 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 8px;
    transition: var(--transition);
    cursor: pointer;
    border-left: 3px solid transparent;
}

.nav-item i {
    font-size: 18px;
    width: 24px;
    text-align: center;
}

.nav-item:hover {
    background: var(--bg-hover);
    color: var(--primary-light);
    border-left-color: var(--primary-light);
}

.nav-item.active {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border-left-color: white;
    box-shadow: var(--shadow-md);
}

.sidebar-footer {
    padding: 20px 12px;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sidebar-footer-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 8px;
    transition: var(--transition);
    cursor: pointer;
}

.sidebar-footer-item:hover {
    background: var(--bg-hover);
    color: var(--primary-light);
}

/* ==============================================
   Main Content
   ============================================== */

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* ==============================================
   Header
   ============================================== */

.header {
    height: var(--header-height);
    background: var(--bg-darker);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    box-shadow: var(--shadow-sm);
}

.breadcrumb {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.btn-icon {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 8px;
    background: var(--bg-hover);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    position: relative;
    font-size: 18px;
}

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

.btn-icon .badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--danger-color);
    color: white;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
}

/* ==============================================
   Pages
   ============================================== */

.page {
    display: none;
    flex: 1;
    overflow-y: auto;
    padding: 32px;
    animation: fadeIn 0.3s ease-in-out;
}

.page.active {
    display: flex;
    flex-direction: column;
}

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

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 32px;
}

.page-header h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
}

/* ==============================================
   Dashboard
   ============================================== */

.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    height: 100%;
}

.endpoints-section,
.quick-actions-section {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--shadow-md);
}

.endpoints-section {
    grid-column: 1 / 2;
    grid-row: 1 / 2;
}

.quick-actions-section {
    grid-column: 2 / 3;
    grid-row: 1 / 3;
}

.endpoints-section h2,
.quick-actions-section h2 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.bff-connection-indicator {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    font-size: 13px;
    color: var(--text-muted);
}

.bff-status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--danger-color);
}

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

.bff-status-text {
    font-weight: 600;
}

.cards-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

.endpoint-card {
    background: var(--bg-hover);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: var(--transition);
    cursor: pointer;
}

.endpoint-card:hover {
    background: var(--border-light);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.endpoint-card-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
    flex-shrink: 0;
}

.endpoint-card.disconnected .endpoint-card-icon {
    background: var(--warning-color);
}

.endpoint-card-info {
    flex: 1;
}

.endpoint-card-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.endpoint-card-desc {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.endpoint-card-status {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    background: var(--success-color);
    color: white;
}

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

.section-description {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 20px;
}

/* ==============================================
   SCL Tree
   ============================================== */

.tree {
    max-height: 600px;
    overflow-y: auto;
}

.scl-tree-root,
.scl-tree-list {
    list-style: none;
    margin: 0;
    padding-left: 22px;
}

.scl-tree-root {
    padding-left: 0;
}

.scl-tree-item {
    position: relative;
    margin: 6px 0;
}

.scl-tree-list .scl-tree-item {
    border-left: 1px solid var(--border-light);
    padding-left: 14px;
}

.scl-tree-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 10px;
    border-radius: 10px;
    background: rgba(15, 23, 42, 0.55);
    border: 1px solid rgba(71, 85, 105, 0.45);
    transition: var(--transition);
    cursor: pointer;
}

.scl-tree-row:hover {
    background: rgba(30, 41, 59, 0.9);
    border-color: rgba(59, 130, 246, 0.45);
}

.scl-tree-list .scl-tree-row::before {
    content: '';
    position: absolute;
    left: -14px;
    top: 50%;
    width: 12px;
    border-top: 1px solid var(--border-light);
}

.scl-tree-toggle {
    width: 20px;
    height: 20px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-size: 13px;
    cursor: pointer;
    flex-shrink: 0;
}

.scl-tree-toggle.hidden {
    visibility: hidden;
}

.scl-tree-tag.hidden {
    display: none;
}

.scl-tree-tag {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 90px;
    padding: 3px 9px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.4px;
    text-transform: uppercase;
    border: 1px solid transparent;
}

.scl-tree-value {
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    word-break: break-word;
}

.scl-node-group .scl-tree-value {
    color: var(--text-secondary);
    font-weight: 600;
}

.scl-node-ied .scl-tree-tag {
    background: rgba(59, 130, 246, 0.15);
    border-color: rgba(59, 130, 246, 0.5);
    color: #93c5fd;
}

.scl-node-accesspoint .scl-tree-tag {
    background: rgba(14, 165, 233, 0.15);
    border-color: rgba(14, 165, 233, 0.5);
    color: #7dd3fc;
}

.scl-node-ldevice .scl-tree-tag {
    background: rgba(16, 185, 129, 0.15);
    border-color: rgba(16, 185, 129, 0.5);
    color: #6ee7b7;
}

.scl-node-logicalnode .scl-tree-tag {
    background: rgba(168, 85, 247, 0.15);
    border-color: rgba(168, 85, 247, 0.5);
    color: #d8b4fe;
}

.scl-node-do .scl-tree-tag {
    background: rgba(245, 158, 11, 0.15);
    border-color: rgba(245, 158, 11, 0.5);
    color: #fcd34d;
}

.scl-node-sdo .scl-tree-tag {
    background: rgba(251, 146, 60, 0.15);
    border-color: rgba(251, 146, 60, 0.5);
    color: #fdba74;
}

.scl-node-da .scl-tree-tag,
.scl-node-sda .scl-tree-tag {
    background: rgba(244, 63, 94, 0.12);
    border-color: rgba(244, 63, 94, 0.45);
    color: #fda4af;
}

.scl-node-dataset .scl-tree-tag,
.scl-node-reportcontrol .scl-tree-tag,
.scl-node-group .scl-tree-tag {
    background: rgba(148, 163, 184, 0.12);
    border-color: rgba(148, 163, 184, 0.4);
    color: #cbd5e1;
}

.action-buttons {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

.btn-action {
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: var(--transition);
    font-weight: 500;
}

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

.btn-action i {
    font-size: 16px;
}

/* ==============================================
   Tools Page
   ============================================== */

.tools-workspace {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 340px minmax(0, 1fr);
    gap: 20px;
    align-items: start;
}

.tools-control-panel,
.tools-tree-panel {
    background: linear-gradient(165deg, rgba(30, 41, 59, 0.85), rgba(15, 23, 42, 0.85));
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow-sm);
}

.tools-control-panel h3,
.tools-tree-panel h3 {
    font-size: 18px;
    margin-bottom: 10px;
}

.tools-helper-text {
    color: var(--text-muted);
    font-size: 13px;
    margin-bottom: 16px;
}

.tools-file-input {
    display: none;
}

.tools-action-buttons {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

.tools-select-wrap {
    display: none;
    gap: 6px;
}

.tools-select-wrap label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
}

.tools-select {
    width: 100%;
    padding: 10px 12px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-hover);
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
}

.tools-select:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.tools-action-btn {
    width: 100%;
    justify-content: flex-start;
    text-align: left;
}

#tools-browseBtnText {
    display: inline-block;
    max-width: 230px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.tools-action-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.tools-status-info {
    margin-top: 14px;
    min-height: 42px;
    padding: 10px 12px;
    border-radius: 8px;
    background: rgba(15, 23, 42, 0.65);
    border: 1px solid rgba(71, 85, 105, 0.55);
    color: var(--text-secondary);
    font-size: 13px;
}

.tools-tree-panel .tree {
    margin-top: 10px;
    min-height: 520px;
    max-height: calc(100vh - 290px);
}

/* ==============================================
   Buttons
   ============================================== */

.btn-primary,
.btn-secondary {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--bg-hover);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--border-light);
    color: var(--text-primary);
}

.btn-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

/* ==============================================
   Forms
   ============================================== */

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

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

.form-group input,
.form-group select,
.setting-item input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-hover);
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.setting-item input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.setting-item input[type="checkbox"] {
    width: auto;
    margin-right: 8px;
}

.setting-item {
    display: flex;
    align-items: center;
}

.setting-item label {
    margin: 0;
    display: flex;
    align-items: center;
    cursor: pointer;
}

/* ==============================================
   Tables
   ============================================== */

.connections-table {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th {
    background: var(--bg-hover);
    padding: 16px;
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

.table td {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

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

/* ==============================================
   Modal
   ============================================== */

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease-in-out;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    animation: slideUp 0.3s ease-in-out;
}

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 18px;
    font-weight: 600;
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* ==============================================
   Data Section
   ============================================== */

.data-section {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
}

.data-input-group,
.data-value-group {
    margin-bottom: 20px;
}

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

.input-group {
    display: flex;
    gap: 8px;
}

.input-group input {
    flex: 1;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-hover);
    color: var(--text-primary);
    font-size: 14px;
}

.input-group button {
    padding: 10px 20px;
}

.data-output {
    background: var(--bg-hover);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    margin-top: 20px;
    font-family: 'Courier New', monospace;
    font-size: 12px;
    color: var(--text-secondary);
    min-height: 100px;
    max-height: 300px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-break: break-all;
}

/* ==============================================
   Settings Section
   ============================================== */

.settings-section {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    max-width: 600px;
}

.settings-group {
    margin-bottom: 32px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--border-color);
}

.settings-group:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.settings-group h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

/* ==============================================
   Scrollbar Styling
   ============================================== */

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

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

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

::-webkit-scrollbar-thumb:hover {
    background: var(--border-light);
}

/* ==============================================
   Responsive
   ============================================== */

@media (max-width: 1400px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .quick-actions-section {
        grid-column: 1;
        grid-row: auto;
    }
}

@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -100%;
        top: 0;
        height: 100vh;
        z-index: 999;
        transition: left 0.3s ease;
    }

    .sidebar.active {
        left: 0;
    }

    .container {
        flex-direction: column;
    }

    .page {
        padding: 16px;
    }

    .header {
        padding: 0 16px;
    }

    .tools-workspace {
        grid-template-columns: 1fr;
    }

    .tools-tree-panel .tree {
        min-height: 400px;
        max-height: 60vh;
    }
}

/* ===== Form Group - Works Inside Flex Containers ===== */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 0;  /* Parent handles bottom margin */
    min-width: 180px;  /* Prevents squishing in flex container */
}

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

.form-group input {
    padding: 10px 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 14px;
    transition: border-color 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.2);
}

/* ===== Fix Parent Container Alignment ===== */
.acsi-connection-section {
    align-items: flex-start !important;  /* Override inline style */
    flex-wrap: wrap;
}
/* ==============================================
   ACSI Page
   ============================================== */