/* ===== Variables ===== */
:root {
    --pillar-color: #2563eb;
    --class-color: #8b5cf6;
    --base-color: #06b6d4;
    --variant-color: #64748b;
    --compound-color: #10b981;
    --category-color: #f59e0b;
    
    /* Light mode colors */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --shadow-sm: rgba(0, 0, 0, 0.05);
    --shadow-md: rgba(0, 0, 0, 0.08);
    --hover-bg: #f8fafc;
}

/* Dark mode colors */
body.dark-mode {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --shadow-sm: rgba(0, 0, 0, 0.3);
    --shadow-md: rgba(0, 0, 0, 0.5);
    --hover-bg: #334155;
}

/* Dark mode specific overrides */
body.dark-mode .btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

body.dark-mode .text-center {
    color: var(--text-secondary);
}

body.dark-mode select option {
    background-color: #1e293b;
    color: #f1f5f9;
}

body.dark-mode .form-select option {
    background-color: #1e293b;
    color: #f1f5f9;
}

body.dark-mode .bi {
    color: inherit;
}

body.dark-mode .list-group-item {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

body.dark-mode .list-group-item-action:hover,
body.dark-mode .list-group-item-action:focus {
    background-color: var(--hover-bg);
    color: var(--text-primary);
}

body.dark-mode .alert {
    background-color: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

body.dark-mode .alert-info {
    background-color: rgba(6, 182, 212, 0.15);
    border-color: rgba(6, 182, 212, 0.3);
    color: var(--text-primary);
}

body.dark-mode .alert-danger {
    background-color: rgba(239, 68, 68, 0.15);
    border-color: rgba(239, 68, 68, 0.3);
    color: var(--text-primary);
}

body.dark-mode .alert small {
    color: var(--text-secondary);
}

body.dark-mode strong {
    color: var(--text-primary);
}

body.dark-mode .text-dark {
    color: var(--text-primary) !important;
}

body.dark-mode ul li {
    color: var(--text-secondary);
}

body.dark-mode .ms-3 li {
    color: var(--text-secondary);
}

body.dark-mode .text-center {
    color: var(--text-secondary) !important;
}

body.dark-mode .text-center i {
    color: var(--text-muted) !important;
}

body.dark-mode .text-center p {
    color: var(--text-secondary) !important;
}

body.dark-mode .py-4 {
    color: var(--text-secondary);
}

body.dark-mode .py-4 i.bi {
    color: var(--text-muted);
}

body.dark-mode .spinner-border {
    color: #2563eb;
}

body.dark-mode .me-1 {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

body.dark-mode .visually-hidden {
    color: var(--text-primary);
}

/* ===== Base Styles ===== */
body {
    background-color: var(--bg-primary);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    color: var(--text-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* ===== Navbar ===== */
.navbar {
    background-color: var(--bg-secondary) !important;
    box-shadow: 0 2px 4px var(--shadow-sm);
    padding: 0.75rem 0;
    z-index: 1000;
    transition: background-color 0.3s ease;
}

.navbar.sticky-top {
    box-shadow: 0 2px 8px var(--shadow-md);
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.3s ease;
}

.navbar-brand:hover {
    color: #2563eb;
}

/* Icon-only button */
.btn-icon-only {
    background: transparent;
    border: none;
    padding: 0.5rem;
    color: var(--text-secondary);
    font-size: 1.125rem;
    cursor: pointer;
    transition: color 0.2s ease, transform 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.375rem;
}

.btn-icon-only:hover {
    color: var(--text-primary);
    transform: scale(1.1);
    background-color: var(--hover-bg);
}

.btn-icon-only:active {
    transform: scale(0.95);
}

.btn-icon-only i {
    font-size: 1.125rem;
}

body.dark-mode .btn-icon-only {
    color: var(--text-secondary);
}

body.dark-mode .btn-icon-only:hover {
    color: var(--text-primary);
    background-color: var(--hover-bg);
}

.navbar-toggler {
    border: 1px solid var(--border-color);
    padding: 0.5rem;
    border-radius: 0.375rem;
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 0.25rem rgba(37, 99, 235, 0.1);
    outline: none;
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(37, 99, 235, 1)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
}

.nav-link.active,
.nav-link:hover {
    color: #2563eb !important;
}

/* Keyboard Shortcuts Hint */
kbd {
    padding: 0.15rem 0.4rem;
    font-size: 0.75rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 0.25rem;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
    font-weight: 600;
}

body.dark-mode kbd {
    background-color: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.bg-light.border-bottom {
    background-color: var(--bg-primary) !important;
    border-color: var(--border-color) !important;
    transition: background-color 0.3s ease;
}

.bg-light.border-bottom .bi-keyboard {
    color: #2563eb !important;
    font-size: 1rem;
    vertical-align: middle;
}

.bg-light.border-bottom .text-muted {
    color: var(--text-muted) !important;
}

.bg-light.border-bottom small {
    color: var(--text-secondary) !important;
}

.bg-light.border-bottom strong {
    color: var(--text-primary) !important;
}

.keyboard-hints {
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.keyboard-hints i {
    color: #2563eb;
    font-size: 1rem;
}

/* ===== View Switch ===== */
.view-switch {
    display: inline-flex;
    background-color: var(--bg-tertiary);
    border-radius: 0.375rem;
    padding: 0.25rem;
    gap: 0.25rem;
}

.view-switch-btn {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    border-radius: 0.25rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-weight: 500;
}

.view-switch-btn i {
    font-size: 0.875rem;
}

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

.view-switch-btn.active {
    background-color: #2563eb;
    color: #fff;
    box-shadow: 0 1px 3px rgba(37, 99, 235, 0.3);
}

body.dark-mode .view-switch-btn.active {
    background-color: #2563eb;
    color: #fff;
}

/* ===== Cards ===== */
.card {
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    box-shadow: 0 1px 2px var(--shadow-sm);
    background: var(--bg-secondary);
    margin-bottom: 1rem;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.card-header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 1.25rem;
    border-radius: 0.75rem 0.75rem 0 0 !important;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.card-header h5,
.card-header h6 {
    margin: 0;
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    padding: 1.25rem;
}

/* ===== Forms ===== */
.form-label {
    font-size: 0.813rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.form-control {
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.625rem 0.875rem;
    font-size: 0.875rem;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.form-control::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

.form-control:focus {
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    outline: none;
    background-color: var(--bg-secondary);
}

.form-check-input:checked {
    background-color: #2563eb;
    border-color: #2563eb;
}

.form-check-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ===== Custom Button Sizes ===== */
.btn-xs {
    padding: 0.25rem 0.5rem;
    font-size: 0.7rem;
    line-height: 1.2;
    border-radius: 0.25rem;
}

.btn-xs i {
    font-size: 0.7rem;
}

.btn-xs span {
    font-size: 0.7rem;
}

/* ===== Button Dark Mode Contrast ===== */
.btn-outline-secondary {
    color: var(--text-primary);
    border-color: var(--border-color);
}

.btn-outline-secondary:hover,
.btn-outline-secondary:focus {
    color: var(--text-primary);
    background-color: var(--hover-bg);
    border-color: var(--border-color);
}

.btn-outline-secondary.active {
    color: var(--text-primary);
    background-color: var(--hover-bg);
    border-color: #2563eb;
}

body.dark-mode .btn-outline-secondary {
    color: var(--text-primary);
    border-color: var(--border-color);
}

body.dark-mode .btn-outline-secondary:hover,
body.dark-mode .btn-outline-secondary:focus {
    color: var(--text-primary);
    background-color: var(--hover-bg);
    border-color: var(--text-muted);
}

body.dark-mode .btn-outline-secondary.active {
    color: #fff;
    background-color: #2563eb;
    border-color: #2563eb;
}

body.dark-mode .btn-primary {
    color: #fff;
    background-color: #2563eb;
    border-color: #2563eb;
}

body.dark-mode .btn-primary:hover {
    color: #fff;
    background-color: #1d4ed8;
    border-color: #1d4ed8;
}

body.dark-mode .btn-success {
    color: #fff;
    background-color: #10b981;
    border-color: #10b981;
}

body.dark-mode .btn-success:hover {
    color: #fff;
    background-color: #059669;
    border-color: #059669;
}

body.dark-mode .btn-secondary {
    color: #fff;
    background-color: #64748b;
    border-color: #64748b;
}

body.dark-mode .btn-secondary:hover {
    color: #fff;
    background-color: #475569;
    border-color: #475569;
}

/* ===== Data Source Selector ===== */
.data-source-selector {
    display: inline-block;
}

.data-source-selector .form-select {
    min-width: 200px;
    font-size: 0.875rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    padding: 0.375rem 0.75rem;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.data-source-selector .form-select:focus {
    border-color: #2563eb;
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.1);
    background-color: var(--bg-tertiary);
}

.data-source-selector .form-select:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Navbar Responsive */
@media (max-width: 991.98px) {
    .navbar-collapse {
        margin-top: 1rem;
        padding-top: 1rem;
        border-top: 1px solid var(--border-color);
    }
    
    .navbar-collapse .ms-auto {
        margin-left: 0 !important;
    }
    
    .navbar-collapse .d-flex {
        flex-direction: column !important;
        align-items: stretch !important;
        gap: 0.5rem !important;
    }
    
    .navbar-collapse .btn {
        width: 100%;
        justify-content: flex-start;
    }
    
    .navbar-collapse .btn span {
        display: inline !important;
    }
    
    .data-source-selector {
        width: 100%;
    }
    
    .data-source-selector .form-select {
        width: 100%;
        min-width: auto;
    }
    
    .btn-icon-only {
        font-size: 1rem;
        padding: 0.375rem;
    }
}

.gap-3 {
    gap: 1rem;
}


/* ===== Buttons ===== */
.btn {
    border-radius: 0.5rem;
    font-weight: 500;
    font-size: 0.875rem;
    padding: 0.625rem 1rem;
}

.btn-outline-secondary {
    border-color: #e2e8f0;
    color: #475569;
}

.btn-outline-secondary:hover {
    background-color: #f1f5f9;
    border-color: #94a3b8;
    color: #0f172a;
}

/* ===== Badges ===== */
.badge {
    font-size: 0.688rem;
    padding: 0.25rem 0.625rem;
    font-weight: 500;
    border-radius: 0.375rem;
    color: #fff;
}

.badge.bg-danger {
    background-color: #2563eb !important;
    color: #fff !important;
}

.badge.bg-warning {
    background-color: #8b5cf6 !important;
    color: #fff !important;
}

.badge.bg-info {
    background-color: #06b6d4 !important;
    color: #fff !important;
}

.badge.bg-secondary {
    background-color: #64748b !important;
    color: #fff !important;
}

.badge.bg-success {
    background-color: #10b981 !important;
    color: #fff !important;
}

/* ===== Tree Hierarchy ===== */
.hierarchy-tree {
    padding: 1rem;
}

.tree-node {
    margin-left: 2rem;
    margin-bottom: 0.5rem;
    position: relative;
    outline: none;
}

/* Focused node style for keyboard navigation */
.tree-node.focused-node {
    /* Remove outline from entire node */
}

.tree-node.focused-node > .tree-node-header {
    outline: 2px solid #3b82f6;
    outline-offset: 2px;
    background-color: rgba(59, 130, 246, 0.08);
    box-shadow: 0 4px 6px rgba(59, 130, 246, 0.15);
}

body.dark-mode .tree-node.focused-node > .tree-node-header {
    outline: 2px solid #3b82f6;
    outline-offset: 2px;
    background-color: rgba(59, 130, 246, 0.15);
    box-shadow: 0 4px 6px rgba(59, 130, 246, 0.25);
}

/* Garis penghubung vertikal */
.hierarchy-tree.vertical .tree-node::before {
    content: '';
    position: absolute;
    left: -1.25rem;
    top: 0;
    bottom: 0.5rem;
    width: 2px;
    background: var(--border-color);
}

.hierarchy-tree.vertical .tree-node::after {
    content: '';
    position: absolute;
    left: -1.25rem;
    top: 1.75rem;
    width: 1.25rem;
    height: 2px;
    background: var(--border-color);
}

.hierarchy-tree.vertical .tree-node:last-child::before {
    bottom: calc(100% - 1.75rem);
}

/* Horizontal Tree Layout */
.hierarchy-tree.horizontal {
    overflow-x: auto;
    overflow-y: auto;
    padding: 2rem;
}

.hierarchy-tree.horizontal .tree-node {
    margin-left: 0;
    margin-right: 0;
    margin-bottom: 1rem;
    display: flex;
    flex-direction: row;
    align-items: center;
    position: relative;
}

.hierarchy-tree.horizontal .tree-node::before,
.hierarchy-tree.horizontal .tree-node::after {
    display: none;
}

.hierarchy-tree.horizontal .tree-node-header {
    margin-bottom: 0;
    margin-right: 2rem;
    position: relative;
    min-width: 350px;
    max-width: 350px;
    flex-shrink: 0;
}

/* Garis horizontal dari parent ke children */
.hierarchy-tree.horizontal .tree-node.has-expanded-children > .tree-node-header::after {
    content: '';
    position: absolute;
    right: -2rem;
    top: 50%;
    transform: translateY(-50%);
    width: 2rem;
    height: 3px;
    background: var(--border-color);
}

.hierarchy-tree.horizontal .tree-node-children {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    position: relative;
    padding-left: 2rem;
    flex: 1;
    padding-top: 0;
    margin-top: 0;
}

.hierarchy-tree.horizontal .tree-node-children.collapsed {
    flex: 0;
    padding: 0;
    margin: 0;
}

/* Vertical line connecting children */
.hierarchy-tree.horizontal .tree-node-children:not(.collapsed)::after {
    content: '';
    position: absolute;
    left: -1.5px;
    top: 0;
    height: 100%;
    width: 3px;
    background: var(--border-color);
}

/* Garis horizontal ke setiap child */
.hierarchy-tree.horizontal .tree-node-children > .tree-node {
    position: relative;
    margin-bottom: 0;
}

.hierarchy-tree.horizontal .tree-node-children > .tree-node::before {
    content: '';
    position: absolute;
    left: -2rem;
    top: 50%;
    transform: translateY(-50%);
    width: 2rem;
    height: 3px;
    background: var(--border-color);
}

.tree-node-header {
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--border-color);
    margin-bottom: 0.5rem;
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.2s ease;
    width: fit-content;
}

.tree-node-header:hover {
    background-color: var(--hover-bg);
    box-shadow: 0 2px 4px var(--shadow-sm);
    transform: translateX(2px);
}

.tree-node-header.Pillar {
    border-left-color: #2563eb;
}

.tree-node-header.Class {
    border-left-color: #8b5cf6;
}

.tree-node-header.Base {
    border-left-color: #06b6d4;
}

.tree-node-header.Variant {
    border-left-color: #64748b;
}

.tree-node-header.Compound {
    border-left-color: #10b981;
}

.tree-node-header.Category {
    border-left-color: #f59e0b;
}

.tree-node-content {
    flex: 1;
    display: flex;
    align-items: center;
}

.tree-node-title {
    font-weight: 500;
    color: var(--text-primary);
    margin-right: 0.75rem;
    font-size: 0.9375rem;
    transition: color 0.2s ease;
}

.tree-node-title.clickable {
    cursor: pointer;
    transition: color 0.2s ease;
}

.tree-node-title.clickable:hover {
    color: #2563eb;
    text-decoration: underline;
}

.tree-node-id {
    color: var(--text-muted);
    font-size: 0.813rem;
    font-weight: 500;
    font-family: 'Courier New', monospace;
}

.tree-node-children {
    margin-top: 0.25rem;
}

.tree-node-children.collapsed {
    display: none !important;
}

/* Vertical tree: indent children on desktop */
@media (min-width: 768px) {
    .hierarchy-tree:not(.horizontal) .tree-node-children {
        margin-left: 20px;
    }
}

.toggle-icon {
    margin-left: 0.5rem;
    transition: transform 0.2s ease, color 0.3s ease;
    color: var(--text-muted);
    font-size: 0.875rem;
    cursor: pointer;
}

.toggle-icon:hover {
    color: var(--text-primary);
}

.toggle-icon.expanded {
    transform: rotate(90deg);
    color: var(--text-secondary);
}

.toggle-icon.expanded:hover {
    color: var(--text-primary);
}

.toggle-icon.no-children {
    opacity: 0;
    width: 0.875rem;
    cursor: default;
}

body.dark-mode .toggle-icon {
    color: var(--text-muted);
}

body.dark-mode .toggle-icon:hover {
    color: var(--text-primary);
}

body.dark-mode .toggle-icon.expanded {
    color: var(--text-secondary);
}

body.dark-mode .toggle-icon.expanded:hover {
    color: var(--text-primary);
}

.abstraction-badge {
    margin-left: 0.5rem;
    color: #fff !important;
}

body.dark-mode .abstraction-badge {
    color: #fff !important;
}

/* ===== Modal ===== */
.modal-backdrop {
    z-index: 1045 !important;
}

.modal {
    z-index: 1055 !important;
}

.modal-content {
    border: none;
    border-radius: 0.75rem;
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
    background-color: var(--bg-secondary);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem;
    background: var(--bg-secondary);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.modal-title {
    color: var(--text-primary);
    font-weight: 600;
}

.modal-body {
    padding: 1.5rem;
    max-height: 70vh;
    overflow-y: auto;
    background-color: var(--bg-secondary);
    transition: background-color 0.3s ease;
}

.modal-body h6 {
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-size: 0.875rem;
}

.modal-body h6 i {
    color: var(--text-secondary);
}

.modal-body p {
    color: var(--text-secondary);
}

.modal-body .list-unstyled li {
    padding: 0.25rem 0;
    color: var(--text-secondary);
}

.modal-body .list-unstyled li strong {
    color: var(--text-primary);
}

.modal-body .fw-bold {
    color: var(--text-primary);
}

.modal-body .badge.bg-light {
    background-color: var(--bg-tertiary) !important;
    color: var(--text-primary) !important;
    border: 1px solid var(--border-color);
}

body.dark-mode .modal-body .badge.bg-light {
    background-color: var(--bg-tertiary) !important;
    color: var(--text-primary) !important;
}

body.dark-mode .modal-body .text-muted {
    color: var(--text-secondary) !important;
}

body.dark-mode .mb-3 {
    color: var(--text-primary);
}

body.dark-mode .modal-body div {
    color: var(--text-secondary);
}

.modal-footer {
    border-top: 1px solid var(--border-color);
    padding: 1rem 1.5rem;
    background: var(--bg-secondary);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

/* ===== Search Sidebar ===== */
.search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1030;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.search-overlay.active {
    opacity: 1;
    visibility: visible;
}

.search-sidebar {
    position: fixed;
    top: 0;
    right: 0;
    width: 450px;
    max-width: 90vw;
    height: 100vh;
    background: var(--bg-secondary);
    z-index: 1040;
    transform: translateX(100%);
    transition: transform 0.3s ease, background-color 0.3s ease;
    box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
}

.search-sidebar.active {
    transform: translateX(0);
}

.search-sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.search-sidebar-header h5 {
    color: var(--text-primary);
    font-weight: 600;
    margin: 0;
}

.search-sidebar-body {
    padding: 1.5rem;
    flex: 1;
    overflow-y: auto;
    background-color: var(--bg-secondary);
}

.search-results-container {
    max-height: calc(100vh - 250px);
    overflow-y: auto;
    min-height: 200px;
}

.search-result-item {
    border-left: 3px solid transparent;
    transition: all 0.2s ease;
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.search-result-item:hover {
    border-left-color: #2563eb;
    background-color: var(--hover-bg);
    color: var(--text-primary);
}

.search-result-item h6 {
    color: var(--text-primary);
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
}

.search-result-item p {
    color: var(--text-secondary);
}

.search-result-item .small {
    color: var(--text-secondary);
}

.search-result-item mark {
    background-color: #fef08a;
    color: #0f172a;
    padding: 0.1rem 0.2rem;
    border-radius: 0.2rem;
    font-weight: 600;
}

body.dark-mode .search-result-item mark {
    background-color: #fbbf24;
    color: #0f172a;
}

#searchInput {
    border: 2px solid var(--border-color);
    padding: 0.75rem;
    font-size: 1rem;
    transition: border-color 0.2s ease;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

#searchInput::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

#searchInput:focus {
    border-color: #2563eb;
    box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.1);
}

/* ===== Scrollbar ===== */
.hierarchy-tree::-webkit-scrollbar {
    width: 6px;
}

.hierarchy-tree::-webkit-scrollbar-track {
    background: transparent;
}

.hierarchy-tree::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 0.375rem;
}

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

/* ===== Animations ===== */
.view-container {
    animation: fadeIn 0.25s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Highlight animation for "Show on Map" feature */
.highlight-node {
    animation: highlightPulse 0.6s ease-in-out 3;
    position: relative;
    z-index: 10;
}

@keyframes highlightPulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(37, 99, 235, 0);
        transform: scale(1);
    }
    50% {
        box-shadow: 0 0 0 8px rgba(37, 99, 235, 0.3);
        transform: scale(1.02);
        background-color: rgba(37, 99, 235, 0.1);
    }
}

/* ===== Loading ===== */
.spinner-border {
    color: #2563eb;
}

/* ===== Utilities ===== */
.text-muted {
    color: var(--text-muted) !important;
}

.text-center {
    color: var(--text-secondary);
}

p {
    color: var(--text-secondary);
}

small {
    color: var(--text-secondary);
}

.small {
    color: var(--text-secondary) !important;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .tree-node {
        margin-left: 1rem;
    }
    
    .hierarchy-tree {
        padding: 0.75rem;
    }
    
    .hierarchy-tree.vertical .tree-node::before {
        left: -0.75rem;
    }
    
    .hierarchy-tree.vertical .tree-node::after {
        left: -0.75rem;
        width: 0.75rem;
    }
    
    .hierarchy-tree.horizontal .tree-node-header {
        min-width: 250px;
        max-width: 250px;
        font-size: 0.875rem;
    }
    
    .card-header h5 {
        font-size: 1rem;
    }
    
    .btn-group .btn {
        font-size: 0.75rem;
        padding: 0.375rem 0.5rem;
    }
    
    .container-fluid {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .card-header {
        padding: 0.75rem;
    }
    
    .card-header .d-flex {
        flex-direction: column;
        gap: 0.75rem !important;
        align-items: flex-start !important;
    }
    
    .data-source-selector {
        margin-left: 0;
        width: 100%;
    }
    
    .data-source-selector .form-select {
        width: 100%;
        min-width: auto;
    }
    
    .btn-group {
        flex-wrap: wrap;
    }
    
    /* Keyboard hints responsive */
    .bg-light.border-bottom .container-fluid {
        flex-direction: column;
        gap: 0.75rem;
        align-items: flex-start !important;
    }
    
    .keyboard-hints {
        font-size: 0.7rem;
    }
    
    .keyboard-hints kbd {
        font-size: 0.65rem;
        padding: 0.1rem 0.3rem;
    }
    
    .view-switch {
        width: 100%;
        justify-content: space-between;
    }
    
    .view-switch-btn {
        flex: 1;
        justify-content: center;
        font-size: 0.7rem;
        padding: 0.5rem;
    }
}