/* Global Styles */
:root {
    /* === Picasso Cubism Palette === */
    --primary-color: #1a3a5c;
    --primary-hover: #0f2440;
    --primary-light: #2d5f8a;
    --success-color: #4a7c59;
    --success-hover: #3a6347;
    --danger-color: #c1440e;
    --warning-color: #c89632;

    /* Accent colors */
    --accent-ochre: #c89632;
    --accent-sienna: #a0522d;
    --accent-terracotta: #cc6b49;
    --accent-red: #b33a3a;
    --accent-olive: #6b7f3e;
    --accent-slate: #4a5568;
    --accent-gold: #d4a843;
    --accent-cream: #f5e6c8;

    /* Notification/banner semantic colors */
    --warning-bg: #fdf0e6;
    --warning-text: #5c3a1e;
    --info-bg: #e8eff8;
    --info-bg-alt: #d4e4f4;
    --caution-bg: #fdf6e8;
    --caution-text: #6b5a28;

    /* Surfaces */
    --bg-color: #f0ebe3;
    --bg-pattern: #e8e0d4;
    --surface-color: #faf6f0;
    --surface-alt: #f5efe5;

    /* Borders & Text */
    --border-color: #c4b5a0;
    --border-strong: #2d2d2d;
    --text-primary: #1a1a1a;
    --text-secondary: #5c5347;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(42, 32, 20, 0.12);
    --shadow-md: 0 4px 12px rgba(42, 32, 20, 0.15);
    --shadow-lg: 0 8px 24px rgba(42, 32, 20, 0.2);
    --shadow-cubist: 4px 4px 0px rgba(26, 58, 92, 0.3);

    /* Geometry */
    --border-radius: 2px;
    --border-width-bold: 3px;
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);

    /* Node type colors */
    --node-measure: #1a3a5c;
    --node-column: #4a7c59;
    --node-table: #7b5ea7;
    --node-visual: #c89632;
    --node-calc-group: #1a8a7b;
    --node-field-param: #d4763a;

    /* Depth colors */
    --depth-1: #4a7c59;
    --depth-2: #c89632;
    --depth-3: #c1440e;
    --depth-4: #b33a3a;
}

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

body {
    font-family: 'Source Serif 4', Georgia, 'Times New Roman', serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.7;
    background-image:
        linear-gradient(30deg, var(--bg-pattern) 12%, transparent 12.5%, transparent 87%, var(--bg-pattern) 87.5%, var(--bg-pattern)),
        linear-gradient(150deg, var(--bg-pattern) 12%, transparent 12.5%, transparent 87%, var(--bg-pattern) 87.5%, var(--bg-pattern)),
        linear-gradient(30deg, var(--bg-pattern) 12%, transparent 12.5%, transparent 87%, var(--bg-pattern) 87.5%, var(--bg-pattern)),
        linear-gradient(150deg, var(--bg-pattern) 12%, transparent 12.5%, transparent 87%, var(--bg-pattern) 87.5%, var(--bg-pattern));
    background-size: 80px 140px;
    background-position: 0 0, 0 0, 40px 70px, 40px 70px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    padding-bottom: 80px;
}

/* Material Symbols Utility Classes */
.material-symbols-outlined {
    vertical-align: middle;
    font-size: 20px;
}

.placeholder-mat-icon {
    font-size: 48px;
    color: var(--text-secondary);
    opacity: 0.5;
}

.selection-item .label .material-symbols-outlined {
    font-size: 16px;
    margin-right: 4px;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 30px;
    padding: 30px 20px;
    background-color: var(--surface-color);
    border: var(--border-width-bold) solid var(--border-strong);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-cubist);
    position: relative;
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), 97% 100%, 3% 100%, 0 calc(100% - 10px));
}

header::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, var(--accent-ochre) 0%, transparent 50%);
    opacity: 0.15;
    clip-path: polygon(100% 0, 0 0, 100% 100%);
}

header::after {
    content: '';
    position: absolute;
    bottom: 10px;
    left: 20px;
    width: 60px;
    height: 4px;
    background: var(--accent-terracotta);
}

.header-logo {
    position: absolute;
    left: 30px;
    top: 50%;
    transform: translateY(-50%);
    height: 48px;
    width: auto;
}

header h1 {
    font-family: 'Archivo Black', Impact, sans-serif;
    font-size: 2.8rem;
    font-weight: 400;
    color: var(--primary-color);
    margin-bottom: 8px;
    letter-spacing: -1px;
    text-transform: uppercase;
}

.subtitle {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-style: italic;
}

/* Project Header - Combined Section */
.project-header {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 20px;
    margin-bottom: 20px;
    padding: 20px;
    background-color: var(--surface-color);
    border: var(--border-width-bold) solid var(--border-strong);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-cubist);
    align-items: start;
    position: relative;
}

.project-header::before {
    content: '';
    position: absolute;
    bottom: -3px;
    right: -3px;
    width: 30px;
    height: 30px;
    background: var(--accent-ochre);
    opacity: 0.2;
    clip-path: polygon(100% 0, 0 100%, 100% 100%);
}

.project-info-section {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

/* Folder Selection */
.folder-selection {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    padding: 20px;
    background-color: var(--surface-color);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.folder-name {
    font-weight: 500;
    color: var(--text-secondary);
}

.loading-indicator {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
}

.loading-indicator.hidden {
    display: none;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px) rotate(-0.5deg); }
    to { opacity: 1; transform: translateY(0) rotate(0); }
}

@keyframes fadeOut {
    from { opacity: 1; transform: translateY(0) rotate(0); }
    to { opacity: 0; transform: translateY(8px) rotate(0.5deg); }
}

/* Model Stats */
.model-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.model-stats.hidden {
    display: none;
}

/* When model stats is in the header */
.project-header .model-stats {
    margin-bottom: 0;
}

.stat-card {
    background-color: var(--surface-color);
    padding: 20px;
    border: 2px solid var(--border-color);
    border-left: 5px solid var(--primary-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: var(--transition);
    position: relative;
}

.stat-card:nth-child(2) {
    border-left-color: var(--accent-ochre);
}

.stat-card:nth-child(3) {
    border-left-color: var(--accent-olive);
}

.stat-card:nth-child(4) {
    border-left-color: var(--accent-terracotta);
}

.stat-card:hover {
    box-shadow: var(--shadow-cubist);
    transform: translate(-2px, -2px);
}

.stat-value {
    font-family: 'Archivo Black', Impact, sans-serif;
    font-size: 2rem;
    font-weight: 400;
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 5px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.8rem;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 20px;
    border-bottom: var(--border-width-bold) solid var(--border-strong);
    padding-bottom: 0;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 22px;
    background: var(--surface-alt);
    border: 2px solid var(--border-color);
    border-bottom: none;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.tab-btn:hover {
    color: var(--primary-color);
    background-color: var(--accent-cream);
}

.tab-btn.active {
    color: var(--primary-color);
    background-color: var(--surface-color);
    border-color: var(--border-strong);
    border-bottom: 3px solid var(--surface-color);
    margin-bottom: -3px;
    z-index: 1;
}

.tab-btn .material-symbols-outlined {
    font-size: 18px;
}

/* Tab Content */
.tab-content {
    background-color: var(--surface-color);
    padding: 24px;
    border: var(--border-width-bold) solid var(--border-strong);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-cubist);
    min-height: 500px;
    position: relative;
}

.tab-content::before {
    content: '';
    position: absolute;
    top: -3px;
    right: 40px;
    width: 0;
    height: 0;
    border-left: 12px solid transparent;
    border-right: 12px solid transparent;
    border-top: 12px solid var(--border-strong);
}

.tab-pane {
    display: none;
}

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

.tab-pane h2 {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 1.5rem;
    font-weight: 900;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.description {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 0.9rem;
}

/* Tab Layout - Sidebar + Main Content */
.tab-layout {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 20px;
    min-height: 450px;
}

.tab-sidebar {
    position: sticky;
    top: 20px;
    align-self: start;
    padding: 20px;
    background-color: var(--surface-alt);
    border: 2px solid var(--border-color);
    border-left: 5px solid var(--primary-color);
    border-radius: var(--border-radius);
    position: relative;
}

.tab-sidebar::after {
    content: '';
    position: absolute;
    bottom: -2px;
    right: -2px;
    width: 25px;
    height: 25px;
    background: var(--accent-ochre);
    opacity: 0.2;
    clip-path: polygon(100% 0, 0 100%, 100% 100%);
}

.tab-sidebar h2 {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 1.3rem;
    font-weight: 900;
    margin-bottom: 8px;
}

.tab-sidebar .description {
    margin-bottom: 15px;
    font-size: 0.85rem;
}

.tab-sidebar .form-group {
    margin-bottom: 15px;
}

.tab-sidebar .select,
.tab-sidebar .input {
    max-width: 100%;
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
}

.tab-main-content {
    min-height: 400px;
}

.btn-full-width {
    width: 100%;
    justify-content: center;
}

/* Content Placeholder */
.content-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    min-height: 300px;
    color: var(--text-secondary);
    text-align: center;
    padding: 40px;
}

.content-placeholder .placeholder-icon {
    margin-bottom: 15px;
    opacity: 0.5;
}

.content-placeholder p {
    font-style: italic;
    max-width: 300px;
}

/* Graph Header */
.graph-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--border-color);
}

.graph-header h2 {
    font-family: 'Playfair Display', Georgia, serif;
    font-weight: 900;
    margin-bottom: 5px;
}

.graph-header .description {
    margin-bottom: 0;
}

/* Preview Actions */
.preview-actions {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-primary);
    font-family: 'Playfair Display', Georgia, serif;
}

.select,
.input {
    width: 100%;
    max-width: 500px;
    padding: 10px 12px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-family: 'Source Serif 4', Georgia, serif;
    background-color: var(--surface-color);
    transition: var(--transition);
}

.select:focus,
.input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26, 58, 92, 0.15);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

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

.btn-primary:hover:not(:disabled) {
    background-color: var(--primary-hover);
    box-shadow: var(--shadow-cubist);
    transform: translate(-1px, -1px);
}

.btn-secondary {
    background-color: var(--accent-slate);
    color: white;
    border-color: var(--accent-slate);
}

.btn-secondary:hover:not(:disabled) {
    background-color: #3a4556;
    box-shadow: var(--shadow-cubist);
    transform: translate(-1px, -1px);
}

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

.btn-success:hover:not(:disabled) {
    background-color: var(--success-hover);
    box-shadow: var(--shadow-cubist);
    transform: translate(-1px, -1px);
}

.btn .material-symbols-outlined {
    font-size: 18px;
}

/* Results */
.results {
    margin-top: 30px;
}

.results.hidden {
    display: none;
}

.result-summary {
    margin-bottom: 30px;
}

.summary-card {
    display: flex;
    justify-content: space-around;
    gap: 20px;
    padding: 25px;
    background-color: var(--surface-alt);
    border-radius: var(--border-radius);
    border-left: 5px solid var(--primary-color);
    border: 2px solid var(--border-color);
    border-left: 5px solid var(--primary-color);
}

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

.summary-value {
    display: block;
    font-family: 'Archivo Black', Impact, sans-serif;
    font-size: 2.5rem;
    font-weight: 400;
    color: var(--primary-color);
}

.summary-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 5px;
}

.result-section {
    margin-bottom: 30px;
}

.result-section h3 {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 8px;
}

.result-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.result-item {
    padding: 15px;
    background-color: var(--surface-alt);
    border-radius: var(--border-radius);
    border-left: 3px solid var(--primary-color);
    transition: var(--transition);
}

.result-item:hover {
    background-color: var(--bg-pattern);
    box-shadow: var(--shadow-sm);
}

.result-item-header {
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.result-item-details {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.result-item-code {
    background-color: var(--surface-color);
    padding: 10px;
    margin-top: 8px;
    border-radius: var(--border-radius);
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.85rem;
    overflow-x: auto;
    white-space: pre-wrap;
    border: 1px solid var(--border-color);
}

.empty-results {
    padding: 40px;
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
}

/* Warning Message */
.warning-message {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background-color: #fdf6e8;
    border-left: 4px solid var(--warning-color);
    border: 2px solid var(--accent-ochre);
    border-left: 4px solid var(--warning-color);
    border-radius: var(--border-radius);
    color: #6b5a28;
    margin-bottom: 20px;
}

.warning-message .material-symbols-outlined {
    flex-shrink: 0;
    font-size: 18px;
    color: var(--accent-ochre);
}

/* Changes List */
.changes-list {
    margin-bottom: 20px;
}

.change-item {
    margin-bottom: 20px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.change-header {
    padding: 12px 16px;
    background-color: var(--surface-alt);
    font-weight: 600;
    border-bottom: 2px solid var(--border-color);
    font-family: 'Playfair Display', Georgia, serif;
}

.change-diff {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
}

.diff-column {
    padding: 15px;
}

.diff-column h4 {
    font-size: 0.9rem;
    margin-bottom: 10px;
    color: var(--text-secondary);
    font-family: 'Playfair Display', Georgia, serif;
}

.diff-before {
    border-right: 2px solid var(--border-color);
    background-color: #fdf0f0;
}

.diff-after {
    background-color: #f0faf0;
}

.diff-code {
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.85rem;
    white-space: pre-wrap;
    overflow-x: auto;
}

/* Graph Controls */
.graph-controls {
    display: flex;
    gap: 15px;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.graph-controls .form-group {
    margin-bottom: 0;
    flex: 1;
}

/* Graph Container */
.graph-container {
    min-height: 500px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--surface-alt);
    display: flex;
    align-items: center;
    justify-content: center;
}

.placeholder-text {
    color: var(--text-secondary);
    font-style: italic;
}

#graphSvg {
    width: 100%;
    height: 600px;
}

/* Graph Nodes and Edges */
.node {
    cursor: pointer;
    transition: var(--transition);
}

.node:hover circle {
    stroke-width: 3px;
}

.node-measure circle {
    fill: var(--node-measure);
}

.node-column circle {
    fill: var(--node-column);
}

.node-visual circle {
    fill: var(--node-visual);
}

.node-calculationGroup circle,
.node-calculationItem circle {
    fill: var(--node-calc-group);
}

.node-fieldParameter circle {
    fill: var(--node-field-param);
}

.node text {
    font-size: 12px;
    font-family: inherit;
}

.edge {
    stroke: var(--border-color);
    stroke-width: 2px;
    fill: none;
}

.edge-highlighted {
    stroke: var(--primary-color);
    stroke-width: 3px;
}

/* Footer */
footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    margin-top: 0;
    padding: 20px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-top: 2px solid var(--border-color);
    background-color: var(--bg-color);
    z-index: 100;
}

footer::before {
    content: '';
    position: absolute;
    top: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--accent-ochre);
}

footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

footer a:hover {
    text-decoration: underline;
}

footer .sponsor-link {
    color: var(--accent-terracotta);
    font-weight: 600;
}

footer .sponsor-link:hover {
    color: var(--danger-color);
}

/* Sponsor Bar */
.sponsor-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    padding: 12px 20px;
    margin-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.sponsor-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
    font-weight: 600;
}

.sponsor-logos {
    display: flex;
    align-items: center;
    gap: 20px;
}

.sponsor-logo {
    height: 28px;
    width: auto;
    opacity: 0.7;
    filter: grayscale(30%);
    transition: var(--transition);
}

.sponsor-logo-link:hover .sponsor-logo {
    opacity: 1;
    filter: grayscale(0%);
}

.become-sponsor-link {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-decoration: none;
    border: 1px solid var(--border-color);
    padding: 4px 10px;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.become-sponsor-link:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

/* Visual Position Mini-map */
.visual-position-info {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 16px;
    padding: 12px;
    background: var(--surface-alt);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
}

.visual-minimap {
    position: relative;
    width: 128px;
    height: 72px;
    background: var(--surface-color);
    border: 2px solid var(--border-strong);
    border-radius: var(--border-radius);
    flex-shrink: 0;
}

.visual-minimap-highlight {
    position: absolute;
    background: rgba(26, 58, 92, 0.2);
    border: 2px solid var(--primary-color);
    border-radius: 1px;
}

.visual-position-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-style: italic;
}

.visual-upstream-summary {
    margin-top: 12px;
    padding: 10px 12px;
    background: var(--surface-alt);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--accent-ochre);
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Visual upstream-only layout (hide downstream, full-width upstream) */
.impact-split-view.visual-upstream-only {
    grid-template-columns: 1fr;
}

/* Sidebar visual minimap preview (shown on visual selection) */
.sidebar-visual-preview {
    margin-bottom: 15px;
}

.sidebar-visual-preview .visual-position-info {
    margin-top: 8px;
}

/* Operation Toggle (Rename vs Delete) */
.operation-toggle {
    display: flex;
    gap: 0;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.op-toggle-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 12px;
    border: none;
    background-color: var(--surface-color);
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

/* Searchable Select Component */
.searchable-select {
    position: relative;
    width: 100%;
    max-width: 500px;
}

.searchable-select-input {
    width: 100%;
    padding: 10px 12px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
    background-color: var(--surface-color);
    transition: var(--transition);
}

.searchable-select-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26, 58, 92, 0.15);
}

.searchable-select-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    max-height: 250px;
    overflow-y: auto;
    background-color: var(--surface-color);
    border: 2px solid var(--primary-color);
    border-top: none;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    display: none;
}

.searchable-select-dropdown.open {
    display: block;
}

.searchable-select-item {
    padding: 8px 12px;
    cursor: pointer;
    font-size: 0.9rem;
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
    transition: background-color 0.1s ease;
    word-break: break-word;
}

.searchable-select-item:hover,
.searchable-select-item.highlighted {
    background-color: var(--accent-cream);
}

.searchable-select-empty {
    padding: 12px;
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
    font-size: 0.9rem;
}

.searchable-select-count {
    padding: 4px 8px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-align: right;
}

/* Sidebar searchable select sizing */
.tab-sidebar .searchable-select {
    max-width: 100%;
}

/* Results Filter Bar */
.results-filter-bar {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 12px 16px;
    background-color: var(--surface-alt);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 15px;
}

.filter-search {
    display: flex;
    align-items: center;
    gap: 8px;
    position: relative;
}

.filter-icon {
    color: var(--text-secondary);
    font-size: 18px;
    flex-shrink: 0;
}

.filter-input {
    flex: 1;
    padding: 6px 10px !important;
    font-size: 0.9rem !important;
    border-width: 1px !important;
    max-width: none !important;
}

.filter-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.filter-chips {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.filter-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    user-select: none;
}

.filter-chip:hover {
    border-color: var(--primary-color);
}

.filter-chip input[type="checkbox"] {
    margin: 0;
    cursor: pointer;
}

.filter-chip input[type="checkbox"]:checked + .filter-chip,
.filter-chip:has(input:checked) {
    background-color: rgba(26, 58, 92, 0.1);
    border-color: var(--primary-color);
}

/* Depth Filter */
.depth-filter {
    display: flex;
    align-items: center;
    gap: 4px;
}

.depth-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-right: 4px;
    white-space: nowrap;
}

.depth-filter-btn {
    padding: 3px 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--surface-color);
    font-family: 'Source Serif 4', Georgia, serif;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.op-toggle-btn:first-child {
    border-right: 1px solid var(--border-color);
}

.op-toggle-btn:hover {
    background-color: var(--accent-cream);
}

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

.op-toggle-btn.active[data-op="delete"] {
    background-color: var(--danger-color);
}

.op-toggle-btn .material-symbols-outlined {
    font-size: 16px;
}

/* Delete Analysis Risk Badges */
.delete-risk-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    border-radius: var(--border-radius);
    font-weight: 700;
    font-family: 'Playfair Display', Georgia, serif;
    margin-top: 15px;
    border: 2px solid;
    flex-wrap: wrap;
}

.delete-risk-badge .material-symbols-outlined {
    font-size: 20px;
}

.delete-risk-badge .risk-detail {
    display: block;
    width: 100%;
    font-weight: 400;
    font-family: 'Source Serif 4', Georgia, serif;
    font-size: 0.9rem;
    margin-top: 4px;
}

.risk-safe {
    background-color: #edf7ed;
    border-color: var(--success-color);
    color: var(--success-color);
}

.risk-caution {
    background-color: #fdf6e8;
    border-color: var(--accent-ochre);
    color: #6b5a28;
}

.risk-dangerous {
    background-color: #fdf0f0;
    border-color: var(--danger-color);
    color: var(--danger-color);
}

/* Broken Reference Highlighting */
.broken-ref {
    color: var(--danger-color);
    font-weight: 700;
}

.broken-ref-highlight {
    background-color: rgba(193, 68, 14, 0.15);
    color: var(--danger-color);
    font-weight: 700;
    border-bottom: 2px solid var(--danger-color);
    padding: 0 2px;
}

/* Break Items */
.break-item {
    border-left-color: var(--danger-color) !important;
}

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

.depth-filter-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.depth-filter-btn.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Lineage Search */
.lineage-search {
    display: flex;
    align-items: center;
    gap: 6px;
}

.lineage-search .filter-input {
    width: 200px;
}

/* Lineage node search states */
.lineage-node.search-match {
    border-color: var(--primary-color) !important;
    box-shadow: 0 0 0 2px rgba(26, 58, 92, 0.3);
    background-color: var(--accent-cream) !important;
}

.lineage-node.search-dim {
    opacity: 0.3;
}

.center-node.search-match {
    box-shadow: 0 0 0 4px rgba(26, 58, 92, 0.4);
}

.center-node.search-dim {
    opacity: 0.3;
}

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

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

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

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

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

    header {
        clip-path: none;
    }

    header h1 {
        font-size: 2rem;
    }

    .folder-selection {
        flex-direction: column;
        align-items: flex-start;
    }

    .summary-card {
        flex-direction: column;
        gap: 15px;
    }

    .change-diff {
        grid-template-columns: 1fr;
    }

    .diff-before {
        border-right: none;
        border-bottom: 2px solid var(--border-color);
    }

    .graph-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .tabs {
        flex-direction: column;
        border-bottom: none;
    }

    .tab-btn {
        border-bottom: 2px solid transparent;
        border-left: 3px solid transparent;
        border-radius: var(--border-radius);
    }

    .tab-btn.active {
        border-left-color: var(--primary-color);
        border-bottom-color: transparent;
        margin-bottom: 0;
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 2px;
    border: 1px solid var(--bg-color);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-sienna);
}

/* Picker Modal */
.picker-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
}

.picker-modal-content {
    background-color: var(--surface-color);
    padding: 30px;
    border: var(--border-width-bold) solid var(--border-strong);
    border-radius: var(--border-radius);
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 8px 8px 0 rgba(26, 58, 92, 0.2);
}

.picker-modal-content h2 {
    font-family: 'Playfair Display', Georgia, serif;
    font-weight: 900;
    margin-top: 0;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.picker-modal-content .subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.picker-modal-content .message {
    color: var(--text-primary);
    margin-bottom: 20px;
    line-height: 1.6;
}

.picker-options {
    margin: 20px 0;
}

.picker-section-header {
    font-family: 'Playfair Display', Georgia, serif;
    font-weight: 700;
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-transform: uppercase;
    margin: 15px 0 8px 0;
    letter-spacing: 0.5px;
}

.picker-option {
    display: flex;
    align-items: center;
    padding: 12px;
    margin: 4px 0;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.picker-option:hover {
    background-color: var(--accent-cream);
    border-color: var(--primary-color);
}

.picker-option.recommended {
    border-color: var(--primary-color);
    background-color: rgba(26, 58, 92, 0.05);
}

.picker-option input[type="radio"] {
    margin-right: 12px;
    cursor: pointer;
}

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

.option-label {
    font-weight: 600;
    font-size: 14px;
    word-break: break-word;
    overflow-wrap: anywhere;
    hyphens: auto;
}

.option-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 4px;
    word-break: break-word;
    overflow-wrap: anywhere;
}

.badge {
    display: inline-block;
    padding: 2px 8px;
    background-color: var(--accent-ochre);
    color: #333;
    border-radius: 3px;
    font-size: 0.75rem;
    margin-left: 8px;
    font-weight: 600;
}

.picker-divider {
    border: none;
    border-top: 2px solid var(--border-color);
    margin: 15px 0;
}

.picker-buttons {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 20px;
}

.icon {
    margin-right: 8px;
}

/* Selection Summary */
.selection-summary {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 15px;
    background-color: var(--surface-alt);
    border-radius: var(--border-radius);
    border-left: 5px solid var(--primary-color);
    border: 2px solid var(--border-color);
    border-left: 5px solid var(--primary-color);
}

.selection-summary.hidden {
    display: none;
}

.selection-item {
    display: flex;
    align-items: center;
    gap: 10px;
}

.selection-item .label {
    font-weight: 600;
    color: var(--text-secondary);
    min-width: 150px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.selection-item .value {
    color: var(--text-primary);
    font-weight: 500;
}

/* Enhanced Impact Analysis Styles */

/* Selected Object Panel */
.selected-object-panel {
    padding: 20px;
    background-color: var(--surface-color);
    border: var(--border-width-bold) solid var(--primary-color);
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    position: relative;
    box-shadow: var(--shadow-cubist);
}

.selected-object-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 8px;
    height: 100%;
    background: linear-gradient(to bottom, var(--accent-ochre), var(--accent-terracotta));
}

.selected-object-panel h3 {
    font-family: 'Playfair Display', Georgia, serif;
    font-weight: 700;
    margin: 0 0 15px 0;
    color: var(--text-primary);
    font-size: 1.3rem;
    padding-left: 12px;
}

.dax-display {
    background-color: var(--bg-color);
    padding: 15px;
    border-radius: var(--border-radius);
    border: 2px solid var(--border-color);
    border-left: 4px solid var(--accent-sienna);
    overflow-x: auto;
}

.dax-display.hidden {
    display: none;
}

.dax-display pre {
    margin: 0;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.dax-display code {
    color: var(--primary-hover);
}

/* Split View Layout */
.impact-split-view {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 20px;
}

.impact-column {
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 20px;
    background-color: var(--surface-alt);
}

.upstream-column {
    border-left: 5px solid var(--primary-light);
}

.downstream-column {
    border-left: 5px solid var(--success-color);
}

.impact-column h3 {
    font-family: 'Playfair Display', Georgia, serif;
    font-weight: 700;
    margin: 0 0 15px 0;
    font-size: 1.2rem;
    color: var(--text-primary);
}

/* Impact Summary */
.impact-summary {
    padding: 15px;
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
    margin-bottom: 15px;
    text-align: center;
    border: 1px solid var(--border-color);
}

.impact-summary .count {
    display: block;
    font-family: 'Archivo Black', Impact, sans-serif;
    font-size: 2rem;
    font-weight: 400;
    color: var(--primary-color);
    margin-bottom: 5px;
}

/* Dependency Sections */
.dependency-section {
    margin-bottom: 15px;
}

.section-toggle {
    width: 100%;
    text-align: left;
    padding: 12px;
    background-color: var(--surface-color);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-family: 'Playfair Display', Georgia, serif;
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.section-toggle:hover {
    background-color: var(--accent-cream);
}

.toggle-icon {
    display: inline-block;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 18px;
}

.section-toggle.collapsed .toggle-icon {
    transform: rotate(-90deg);
}

.dependency-list {
    padding: 10px 0;
    max-height: 400px;
    overflow-y: auto;
}

.dependency-list.collapsed {
    display: none;
}

.dependency-list::-webkit-scrollbar {
    width: 8px;
}

.dependency-list::-webkit-scrollbar-track {
    background: var(--bg-color);
}

.dependency-list::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 2px;
}

.dependency-list::-webkit-scrollbar-thumb:hover {
    background: var(--accent-sienna);
}

/* Dependency Items */
.dependency-item {
    padding: 12px 15px;
    margin: 5px 0;
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
    border-left: 3px solid transparent;
    transition: var(--transition);
}

.dependency-item.depth-1 {
    margin-left: 0;
    border-left-color: var(--depth-1);
}

.dependency-item.depth-2 {
    margin-left: 20px;
    border-left-color: var(--depth-2);
    background-color: #fdf6e8;
}

.dependency-item.depth-3 {
    margin-left: 40px;
    border-left-color: var(--depth-3);
    background-color: #fdf0e6;
}

.dependency-item.depth-4 {
    margin-left: 60px;
    border-left-color: var(--depth-4);
    background-color: #fdf0f0;
}

.dependency-item:hover {
    background-color: var(--bg-pattern);
    box-shadow: var(--shadow-sm);
}

.dependency-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
}

.dependency-item-name {
    font-weight: 600;
    color: var(--text-primary);
    flex: 1;
    word-break: break-word;
}

.depth-badge {
    display: inline-block;
    padding: 2px 8px;
    background-color: var(--border-color);
    border-radius: 3px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    white-space: nowrap;
}

.dependency-item-details {
    margin-top: 5px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Empty Results */
.empty-results {
    padding: 20px;
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
}

/* DAX Expandable */
.dax-expandable {
    margin-top: 10px;
}

.dax-toggle-btn {
    padding: 6px 12px;
    font-size: 0.85rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

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

.dax-code-container {
    margin-top: 8px;
    padding: 12px;
    background-color: var(--bg-color);
    border-radius: var(--border-radius);
    border: 2px solid var(--border-color);
    border-left: 4px solid var(--accent-sienna);
    display: none;
}

.dax-code-container.expanded {
    display: block;
}

.dax-code-container pre {
    margin: 0;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.85rem;
    white-space: pre-wrap;
    word-wrap: break-word;
    color: var(--primary-hover);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .impact-split-view {
        grid-template-columns: 1fr;
    }

    .dependency-item.depth-2 {
        margin-left: 15px;
    }

    .dependency-item.depth-3 {
        margin-left: 30px;
    }

    .dependency-item.depth-4 {
        margin-left: 45px;
    }
}

@media (max-width: 768px) {
    .selected-object-panel {
        padding: 15px;
    }

    .impact-column {
        padding: 15px;
    }

    .impact-summary .count {
        font-size: 1.5rem;
    }

    .dependency-item {
        padding: 10px 12px;
    }

    .dependency-item-name {
        font-size: 0.9rem;
    }

    .depth-badge {
        font-size: 0.7rem;
        padding: 2px 6px;
    }
}

/* Impact Actions Buttons */
.impact-actions {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    padding: 15px;
    background-color: var(--surface-alt);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.impact-actions.hidden {
    display: none;
}

/* Refactoring Tip */
.refactor-tip {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 10px 12px;
    background-color: #e8eff8;
    border: 1px solid var(--primary-light);
    border-radius: var(--border-radius);
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 0.8rem;
    line-height: 1.4;
}

.refactor-tip .material-symbols-outlined {
    flex-shrink: 0;
    color: var(--primary-light);
    font-size: 18px;
    margin-top: 1px;
}

/* Mini Lineage Visualization Styles */
.graph-container {
    min-height: 500px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--surface-alt);
    overflow: hidden;
}

.mini-lineage-container {
    padding: 20px;
    min-height: 500px;
}

.lineage-layout {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 20px;
    min-height: 400px;
    align-items: start;
}

.lineage-section {
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
    padding: 20px;
    min-height: 300px;
    border: 2px solid var(--border-color);
}

.upstream-section {
    border-left: 5px solid var(--primary-light);
}

.downstream-section {
    border-left: 5px solid var(--success-color);
}

.center-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: 20px 30px;
    min-width: 250px;
}

.lineage-section-header {
    font-family: 'Playfair Display', Georgia, serif;
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.section-icon {
    font-size: 18px;
    color: var(--primary-color);
}

.lineage-nodes {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.lineage-empty {
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
    padding: 30px 20px;
}

/* Center Node */
.center-node-wrapper {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.center-node {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    color: white;
    padding: 20px 30px;
    border-radius: var(--border-radius);
    border: var(--border-width-bold) solid var(--border-strong);
    box-shadow: var(--shadow-cubist);
    text-align: center;
    min-width: 200px;
    z-index: 2;
}

.center-node.node-type-column {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-color) 100%);
}

.center-node.node-type-calculationGroup,
.center-node.node-type-calculationItem {
    background: linear-gradient(135deg, var(--node-calc-group) 0%, #12695e 100%);
}

.center-node.node-type-fieldParameter {
    background: linear-gradient(135deg, var(--node-field-param) 0%, #b55e28 100%);
}

.center-node-type {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.9;
    margin-bottom: 8px;
}

.center-node-type .material-symbols-outlined {
    font-size: 14px;
}

.center-node-name {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 1.1rem;
    font-weight: 700;
    word-break: break-word;
}

/* Connection Lines */
.connection-line {
    position: absolute;
    top: 50%;
    height: 3px;
    background-color: var(--border-color);
    width: 40px;
}

.left-line {
    right: 100%;
    margin-right: 5px;
}

.right-line {
    left: 100%;
    margin-left: 5px;
}

/* Center DAX Preview */
.center-dax-preview {
    margin-top: 15px;
    background-color: var(--bg-color);
    padding: 12px;
    border-radius: var(--border-radius);
    border: 2px solid var(--border-color);
    border-left: 4px solid var(--accent-sienna);
    max-width: 280px;
}

.center-dax-preview pre {
    margin: 0;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.75rem;
    white-space: pre-wrap;
    word-wrap: break-word;
    color: var(--primary-hover);
}

/* Node Groups */
.node-group {
    margin-bottom: 15px;
}

.node-group-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    background-color: var(--surface-alt);
    border-radius: var(--border-radius);
    border-left: 4px solid;
    margin-bottom: 8px;
    font-family: 'Playfair Display', Georgia, serif;
}

.group-label {
    font-weight: 700;
    font-size: 0.9rem;
}

.group-count {
    background-color: var(--primary-color);
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.nodes-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

/* Lineage Node Items */
.lineage-node {
    padding: 10px 12px;
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
    border-left: 3px solid;
    transition: var(--transition);
    position: relative;
}

.lineage-node:hover {
    background-color: var(--surface-alt);
    box-shadow: var(--shadow-sm);
}

.lineage-node .node-name {
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-primary);
    word-break: break-word;
}

.lineage-node .node-subtitle {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 3px;
}

.lineage-node .node-depth {
    position: absolute;
    top: 8px;
    right: 8px;
    background-color: var(--border-color);
    color: var(--text-secondary);
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 0.65rem;
    font-weight: 600;
}

/* Expand/Collapse Button */
.expand-nodes-btn {
    width: 100%;
    padding: 8px 12px;
    background-color: transparent;
    border: 1px dashed var(--border-color);
    border-radius: var(--border-radius);
    color: var(--primary-color);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.expand-nodes-btn:hover {
    background-color: rgba(26, 58, 92, 0.1);
    border-color: var(--primary-color);
}

/* Placeholder */
.lineage-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 400px;
    color: var(--text-secondary);
}

.placeholder-icon {
    margin-bottom: 15px;
    opacity: 0.5;
}

.lineage-placeholder p {
    font-style: italic;
    text-align: center;
    max-width: 300px;
}

/* Page Subgroups for Visuals */
.page-subgroup {
    margin-left: 8px;
    margin-bottom: 12px;
    border-left: 2px solid var(--border-color);
    padding-left: 12px;
}

.page-subgroup:last-child {
    margin-bottom: 0;
}

.page-subgroup-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    background-color: rgba(200, 150, 50, 0.1);
    border-radius: var(--border-radius);
    margin-bottom: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
}

.page-subgroup-header .page-name {
    display: flex;
    align-items: center;
    gap: 6px;
}

.page-subgroup-header .page-name::before {
    content: 'description';
    font-family: 'Material Symbols Outlined';
    font-size: 1rem;
    vertical-align: middle;
    margin-right: 2px;
    font-weight: normal;
    font-style: normal;
    letter-spacing: normal;
    text-transform: none;
    white-space: nowrap;
    word-wrap: normal;
    direction: ltr;
    -webkit-font-smoothing: antialiased;
}

.page-subgroup-count {
    background-color: var(--accent-ochre);
    color: white;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: 600;
}

.page-visuals-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.page-visuals-list .lineage-node {
    margin-left: 0;
    padding: 8px 10px;
}

.page-expand-btn {
    font-size: 0.8rem;
    padding: 6px 10px;
}

/* Responsive Design for Lineage */
@media (max-width: 1024px) {
    .lineage-layout {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto;
    }

    .center-section {
        order: -1;
    }

    .connection-line {
        display: none;
    }
}

@media (max-width: 768px) {
    .mini-lineage-container {
        padding: 10px;
    }

    .lineage-section {
        padding: 15px;
        min-height: auto;
    }

    .center-node {
        padding: 15px 20px;
        min-width: auto;
    }

    .impact-actions {
        flex-direction: column;
    }
}

/* Responsive Design for New Layouts */
@media (max-width: 1024px) {
    .project-header {
        grid-template-columns: 1fr;
    }

    .project-header .model-stats {
        grid-template-columns: repeat(4, 1fr);
    }

    .tab-layout {
        grid-template-columns: 1fr;
    }

    .tab-sidebar {
        position: static;
        border-left: none;
        border-top: 5px solid var(--primary-color);
    }
}

@media (max-width: 768px) {
    .project-header {
        padding: 15px;
    }

    .project-header .model-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .tab-content {
        padding: 15px;
    }

    .tab-content::before {
        display: none;
    }

    .tab-sidebar {
        padding: 15px;
    }

    .content-placeholder {
        padding: 20px;
        min-height: 200px;
    }

    .graph-header {
        flex-direction: column;
        gap: 15px;
    }

    .preview-actions {
        flex-direction: column;
    }
}

/* ── Session Persistence: Quick Access Panel ─────────────── */

.quick-access-panel {
    margin-bottom: 15px;
    padding: 12px;
    background-color: var(--surface-color);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
}

.quick-access-header h4 {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 0.9rem;
    font-weight: 700;
    margin: 0 0 8px 0;
    color: var(--text-primary);
}

.quick-access-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0;
}

.quick-tab {
    padding: 6px 14px;
    font-size: 0.8rem;
    font-family: 'Playfair Display', Georgia, serif;
    font-weight: 600;
    background: none;
    border: 1px solid transparent;
    border-bottom: none;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition);
}

.quick-tab:hover {
    color: var(--primary-color);
    background-color: var(--accent-cream);
}

.quick-tab.active {
    color: var(--primary-color);
    border-color: var(--border-color);
    background-color: var(--surface-alt);
    border-bottom: 1px solid var(--surface-alt);
    margin-bottom: -1px;
}

.quick-list {
    max-height: 180px;
    overflow-y: auto;
}

.quick-list-empty {
    padding: 12px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-style: italic;
}

.quick-access-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 10px;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.quick-access-item:hover {
    background-color: var(--accent-cream);
}

.quick-item-info {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-width: 0;
}

.quick-item-name {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.quick-item-meta {
    font-size: 0.7rem;
    color: var(--text-secondary);
}

.quick-item-remove {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 2px;
    border-radius: var(--border-radius);
    transition: var(--transition);
    flex-shrink: 0;
}

.quick-item-remove:hover {
    color: var(--danger-color);
    background-color: rgba(193, 68, 14, 0.1);
}

.quick-item-remove .material-symbols-outlined {
    font-size: 16px;
}

/* ── Session Persistence: Favorite Button ────────────────── */

.selected-object-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.selected-object-header h3 {
    margin-bottom: 0;
}

.favorite-btn {
    background: none;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    padding: 6px;
    color: var(--text-secondary);
    transition: var(--transition);
    flex-shrink: 0;
}

.favorite-btn:hover {
    border-color: var(--accent-ochre);
    color: var(--accent-ochre);
}

.favorite-btn.favorited {
    color: var(--accent-ochre);
    border-color: var(--accent-ochre);
    background-color: rgba(200, 150, 50, 0.1);
}

.favorite-btn .material-symbols-outlined {
    font-size: 20px;
}

/* ── Session Persistence: Last Folder Hint ───────────────── */

.last-folder-hint {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-style: italic;
    padding: 4px 0;
}

/* ── Selection Process Guide ─────────────────────────────── */

.selection-guide {
    padding: 10px 14px;
    background-color: var(--info-bg);
    border: 1px solid var(--primary-light);
    border-radius: var(--border-radius);
    font-size: 0.8rem;
}

.selection-guide-steps {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.guide-step {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 8px;
    border-radius: var(--border-radius);
    transition: var(--transition);
    color: var(--text-secondary);
}

.guide-step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: var(--border-color);
    color: var(--text-secondary);
    font-size: 0.7rem;
    font-weight: 600;
    flex-shrink: 0;
}

.guide-step-text {
    white-space: nowrap;
}

.guide-step-text em {
    font-style: italic;
    opacity: 0.8;
}

.guide-step-arrow {
    font-size: 16px;
    color: var(--border-color);
    flex-shrink: 0;
}

/* Active step */
.guide-step.active {
    background-color: rgba(0, 120, 212, 0.08);
}

.guide-step.active .guide-step-number {
    background-color: var(--primary-color);
    color: white;
}

.guide-step.active .guide-step-text {
    color: var(--primary-color);
    font-weight: 600;
}

/* Completed step */
.guide-step.completed .guide-step-number {
    background-color: var(--success-color);
    color: white;
}

.guide-step.completed .guide-step-text {
    color: var(--success-color);
}

/* ── Toast Notifications ─────────────────────────────────── */

.app-notification {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 12px 20px;
    border-radius: 6px;
    color: white;
    font-weight: 500;
    z-index: 10000;
    animation: fadeIn 0.3s ease;
}

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

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

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

/* ── Banner Notifications ────────────────────────────────── */

.notification-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 10px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 13px;
}

.notification-banner--warning {
    background-color: var(--warning-bg);
    border-bottom: 3px solid var(--accent-terracotta);
    color: var(--warning-text);
    z-index: 9997;
}

.notification-banner--info {
    background-color: var(--info-bg);
    border-bottom: 3px solid var(--primary-color);
    color: var(--primary-color);
    z-index: 9998;
}

.notification-banner--caution {
    background-color: var(--caution-bg);
    border-bottom: 3px solid var(--warning-color);
    color: var(--caution-text);
    z-index: 9999;
    font-size: 14px;
    padding: 12px 20px;
}

.notification-banner__icon {
    margin-right: 10px;
}

.notification-banner__icon .material-symbols-outlined {
    font-size: 16px;
    vertical-align: middle;
}

.notification-banner__close {
    background: none;
    border: none;
    cursor: pointer;
    margin-left: 20px;
    color: inherit;
}

.notification-banner--warning .notification-banner__close {
    font-size: 18px;
}

.notification-banner--info .notification-banner__close {
    font-size: 18px;
}

.notification-banner--caution .notification-banner__close {
    font-size: 20px;
}

.notification-banner--info code {
    background: var(--info-bg-alt);
    padding: 2px 6px;
    border-radius: 3px;
    margin: 0 2px;
}

.notification-banner--caution code {
    background: var(--accent-cream);
    padding: 2px 6px;
    border-radius: 3px;
    margin: 0 4px;
}

.notification-banner--caution .material-symbols-outlined {
    vertical-align: middle;
}

/* Sponsor Toast */
.sponsor-toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 10000;
    max-width: 420px;
    background: var(--surface-color, #fff);
    border: 1px solid var(--border-color, #e0e0e0);
    border-left: 4px solid var(--primary-color, #0078d4);
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
    padding: 16px 40px 16px 16px;
    animation: sponsorSlideIn 0.4s ease-out;
}
.sponsor-toast.hidden { display: none; }
.sponsor-toast-text {
    display: block;
    font-size: 0.9rem;
    color: var(--text-primary, #333);
    margin-bottom: 12px;
    line-height: 1.5;
}
.sponsor-toast-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.btn.btn-sponsor-toast {
    padding: 6px 14px;
    background: var(--primary-color, #0078d4);
    color: #fff;
    border-radius: 6px;
    text-decoration: none;
    font-size: 0.8125rem;
    font-weight: 500;
}
.btn.btn-sponsor-toast:hover { background: var(--primary-hover, #106ebe); }
.btn.btn-sponsor-toast-secondary {
    padding: 6px 14px;
    background: transparent;
    color: var(--primary-color, #0078d4);
    border: 1px solid var(--primary-color, #0078d4);
    border-radius: 6px;
    text-decoration: none;
    font-size: 0.8125rem;
    font-weight: 500;
}
.btn.btn-sponsor-toast-secondary:hover { background: rgba(0,120,212,0.08); }
.sponsor-toast-close {
    position: absolute;
    top: 8px;
    right: 8px;
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--text-secondary, #666);
    cursor: pointer;
    padding: 4px 8px;
    line-height: 1;
}
.sponsor-toast-close:hover { color: var(--text-primary, #333); }
@keyframes sponsorSlideIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}