/* ========================================
   Workflow Editor — Styles
   ======================================== */

/* ── Variables ── */
:root {
    --wf-topbar-h: 44px;
    --wf-palette-w: 300px;
    --wf-inspector-w: 300px;
    --wf-preview-h: 220px;
    --wf-node-bg: #2c2c2e;
    --wf-wire: #98989d;
    --wf-wire-drag: #e8b84a;
}

/* ── Overlay ── */
.wf-overlay {
    position: fixed;
    inset: 0;
    z-index: 9000;
    background: var(--bg);
    display: flex;
    flex-direction: column;
    opacity: 0;
    transition: opacity 0.2s ease;
    pointer-events: none;
}

.wf-overlay.visible {
    opacity: 1;
    pointer-events: all;
}

/* ── Top bar ── */
.wf-topbar {
    height: var(--wf-topbar-h);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 12px;
    background: var(--bg-header);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
    position: relative;
}

.wf-topbar-title {
    font-weight: 600;
    font-size: 14px;
    color: var(--text);
    letter-spacing: 0.3px;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    pointer-events: none;
}

.wf-topbar-actions {
    display: flex;
    gap: 8px;
}

.wf-topbar-btn {
    background: var(--bg-surface);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 6px 14px;
    font-size: 13px;
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition);
}

.wf-topbar-btn:hover {
    background: var(--border-dark);
    border-color: var(--border-dark);
}

.wf-topbar-run {
    background: var(--gold);
    color: #000;
    border-color: var(--gold);
    font-weight: 600;
}

.wf-topbar-run:hover {
    background: var(--gold-light);
    border-color: var(--gold-light);
}

.wf-topbar-run:disabled {
    opacity: 0.6;
    cursor: wait;
}

.wf-topbar-io {
    background: var(--bg-surface);
    color: var(--text-muted);
    font-size: 12px;
    padding: 5px 10px;
}

.wf-topbar-io:hover {
    color: var(--text);
}

/* ── Examples dropdown ── */
.wf-examples-wrapper {
    position: relative;
}

.wf-examples-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 4px;
    min-width: 240px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: 0 8px 24px rgba(0,0,0,0.35);
    z-index: 100;
    overflow: hidden;
}

.wf-examples-dropdown.open {
    display: block;
}

.wf-examples-title {
    padding: 8px 12px 6px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
}

.wf-examples-list {
    padding: 4px 0;
    font-size: 13px;
    color: var(--text-muted);
}

.wf-examples-item {
    display: block;
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    padding: 8px 14px;
    font-size: 13px;
    color: var(--text);
    cursor: pointer;
    transition: background var(--transition);
}

.wf-examples-item:hover {
    background: var(--border);
}

/* ── Body layout ── */
.wf-body {
    flex: 1;
    display: flex;
    min-height: 0;
}

/* ── Palette (left) ── */
.wf-palette {
    width: var(--wf-palette-w);
    background: var(--bg-panel);
    border-right: 1px solid var(--border);
    overflow-y: auto;
    flex-shrink: 0;
}

.wf-palette-title {
    padding: 10px 12px 6px;
    font-weight: 600;
    font-size: 13px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.wf-palette-section {
    margin-bottom: 2px;
}

.wf-palette-cat-header {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    cursor: pointer;
    font-size: 12px;
    user-select: none;
}

.wf-palette-cat-header:hover {
    background: var(--bg-surface);
}

.wf-palette-arrow {
    font-size: 10px;
    transition: transform 0.15s ease;
}

.wf-palette-arrow.collapsed {
    transform: rotate(-90deg);
}

.wf-palette-list {
    padding: 2px 6px 6px;
    display: flex;
    flex-wrap: wrap;
    gap: 3px;
}

.wf-palette-item {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 500;
    border-radius: 20px;
    cursor: grab;
    color: var(--text);
    background: var(--bg-surface);
    border: 1px solid var(--border);
    transition: background 0.12s ease, border-color 0.12s ease, box-shadow 0.12s ease;
    user-select: none;
    white-space: nowrap;
}

.wf-palette-item:hover {
    background: var(--border-dark);
    border-color: var(--border-dark);
    box-shadow: 0 1px 4px rgba(0,0,0,0.18);
}

.wf-palette-item:active {
    cursor: grabbing;
    transform: scale(0.97);
}

.wf-palette-icon {
    font-size: 14px;
    width: 20px;
    text-align: center;
    flex-shrink: 0;
}

/* ── Canvas (center) ── */
.wf-canvas-area {
    flex: 1;
    overflow: hidden;
    position: relative;
    background:
        radial-gradient(circle, var(--border) 1px, transparent 1px);
    background-size: 20px 20px;
}

.wf-canvas-svg {
    display: block;
    user-select: none;
    -webkit-user-select: none;
}

/* ── Node styles (via SVG classes) ── */
.wf-node-group {
    cursor: move;
    user-select: none;
    -webkit-user-select: none;
}

.wf-node-group.wf-selected .wf-node-rect {
    stroke: var(--gold) !important;
    stroke-width: 2.5;
    filter: drop-shadow(0 0 6px rgba(212, 162, 78, 0.4));
}

.wf-node-label {
    font-family: var(--font);
    pointer-events: none;
}

.wf-node-badge {
    font-family: var(--mono);
    pointer-events: none;
}

.wf-port {
    fill: var(--bg-surface);
    stroke: var(--text-muted);
    stroke-width: 1.5;
    cursor: crosshair;
    transition: fill 0.12s, stroke 0.12s;
}

.wf-port:hover {
    fill: var(--gold);
    stroke: var(--gold-light);
    r: 8;
}

.wf-wire-path {
    cursor: pointer;
    transition: stroke 0.12s;
}

.wf-wire-path:hover {
    stroke: var(--gold);
    stroke-width: 3;
}

@keyframes wf-spin {
    to { stroke-dashoffset: -20; }
}

.wf-spinner {
    animation: wf-spin 0.6s linear infinite;
}

/* ── Inspector (right) ── */
.wf-inspector {
    width: var(--wf-inspector-w);
    background: var(--bg-panel);
    border-left: 1px solid var(--border);
    overflow-y: auto;
    flex-shrink: 0;
}

.wf-inspector-title {
    padding: 10px 12px 6px;
    font-weight: 600;
    font-size: 13px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.wf-inspector-form {
    padding: 8px 12px;
}

.wf-inspector-empty {
    color: var(--text-light);
    font-size: 12px;
    font-style: italic;
    padding: 20px 0;
    text-align: center;
}

.wf-inspector-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}

.wf-inspector-icon {
    font-size: 18px;
}

.wf-inspector-name {
    font-weight: 600;
    font-size: 14px;
}

.wf-inspector-label {
    display: block;
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.wf-inspector-input,
.wf-inspector-select {
    width: 100%;
    padding: 6px 8px;
    font-size: 12px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-family: var(--font);
    outline: none;
    transition: border-color var(--transition);
}

.wf-inspector-input:focus,
.wf-inspector-select:focus {
    border-color: var(--gold);
}

.wf-inspector-validation {
    margin-top: 10px;
}

.wf-val-warn {
    font-size: 11px;
    color: var(--warning);
}

/* Node comment field */
.wf-inspector-comment {
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

.wf-inspector-comment-input {
    width: 100%;
    box-sizing: border-box;
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 8px 10px;
    font-size: 12px;
    font-family: inherit;
    line-height: 1.5;
    resize: vertical;
    min-height: 56px;
}

.wf-inspector-comment-input::placeholder {
    color: var(--text-muted);
}

.wf-inspector-comment-input:focus {
    outline: none;
    border-color: var(--gold);
}

/* Incoming data summary panel */
.wf-data-summary {
    margin-bottom: 10px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 8px;
}

.wf-data-empty {
    border-bottom: none;
    padding-bottom: 0;
}

.wf-data-summary-hint {
    font-size: 11px;
    color: var(--text-muted);
    text-align: center;
    padding: 6px 0;
    font-style: italic;
}

.wf-data-section {
    margin-bottom: 4px;
}

.wf-data-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    padding: 4px 0;
    user-select: none;
    list-style: none;
}

.wf-data-section-header::-webkit-details-marker {
    display: none;
}

.wf-data-section-header::before {
    content: '▸';
    margin-right: 4px;
    font-size: 9px;
    transition: transform 0.15s;
}

.wf-data-section[open] > .wf-data-section-header::before {
    transform: rotate(90deg);
}

.wf-schema-meta {
    font-weight: 400;
    font-size: 10px;
    color: var(--text-muted);
}

.wf-schema-badge {
    display: inline-block;
    padding: 0 4px;
    border-radius: 3px;
    font-size: 9px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.wf-schema-geom {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
}

.wf-schema-table-wrap {
    max-height: 180px;
    overflow-y: auto;
    margin-top: 2px;
}

.wf-schema-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 10px;
}

.wf-schema-table th {
    position: sticky;
    top: 0;
    background: var(--bg-panel);
    text-align: left;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.4px;
    padding: 2px 4px;
    border-bottom: 1px solid var(--border);
    font-size: 9px;
}

.wf-schema-table td {
    padding: 2px 4px;
    border-bottom: 1px solid var(--border-light, rgba(255,255,255,0.04));
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 80px;
}

.wf-schema-fname {
    font-weight: 500;
    color: var(--text);
}

.wf-schema-type {
    display: inline-block;
    padding: 0 3px;
    border-radius: 3px;
    font-size: 9px;
    font-weight: 500;
}

.wf-type-num  { background: rgba(59,130,246,0.15); color: #60a5fa; }
.wf-type-str  { background: rgba(168,162,158,0.12); color: var(--text-muted); }
.wf-type-date { background: rgba(168,85,247,0.15); color: #a855f7; }
.wf-type-bool { background: rgba(245,158,11,0.15); color: #f59e0b; }

.wf-schema-sample {
    color: var(--text-muted);
    font-style: italic;
    font-size: 9px;
}

/* common small button */
.wf-btn-sm {
    background: var(--bg-surface);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 4px 10px;
    font-size: 11px;
    cursor: pointer;
    transition: background var(--transition);
}

.wf-btn-sm:hover {
    background: var(--border-dark);
}

.wf-btn-danger {
    border-color: var(--error);
    color: var(--error);
}

.wf-btn-danger:hover {
    background: rgba(255, 69, 58, 0.15);
}

.wf-btn-icon {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 14px;
    padding: 2px 4px;
    line-height: 1;
}

.wf-btn-icon:hover {
    color: var(--text);
}

/* Toggle row (AND/OR, asc/desc) */
.wf-toggle-row {
    display: flex;
    gap: 4px;
}

.wf-toggle-btn {
    flex: 1;
    padding: 5px 8px;
    font-size: 11px;
    background: var(--bg-surface);
    color: var(--text-muted);
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    transition: background var(--transition), color var(--transition);
}

.wf-toggle-btn.active {
    background: var(--gold);
    color: #000;
    border-color: var(--gold);
    font-weight: 600;
}

/* Filter rules */
.wf-filter-rule {
    display: flex;
    gap: 4px;
    align-items: center;
    margin-bottom: 4px;
}

/* Rename rows */
.wf-rename-row {
    display: flex;
    gap: 4px;
    align-items: center;
    margin-bottom: 4px;
}

/* Checkboxes */
.wf-check-list {
    max-height: 180px;
    overflow-y: auto;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 4px;
    background: var(--bg-surface);
}

.wf-check-row {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 3px 4px;
    font-size: 12px;
    cursor: pointer;
    border-radius: 4px;
}

.wf-check-row:hover {
    background: var(--border);
}

/* Field chips (template builder, calculate field) */
.wf-field-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    padding: 4px 0;
}

.wf-field-chip {
    display: inline-block;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2px 8px;
    font-size: 11px;
    font-family: monospace;
    color: var(--text-secondary);
    cursor: pointer;
    user-select: none;
    transition: background var(--transition), border-color var(--transition);
}

.wf-field-chip:hover {
    background: var(--gold-dim);
    border-color: var(--gold);
    color: var(--text-primary);
}

/* File drop zone (input nodes) */
.wf-file-drop {
    display: block;
    position: relative;
    border: 2px dashed var(--border-dark);
    border-radius: 8px;
    padding: 18px 10px;
    text-align: center;
    font-size: 12px;
    color: var(--text-muted);
    cursor: pointer;
    transition: border-color var(--transition), background var(--transition);
}

.wf-file-drop:hover,
.wf-file-drop.drag-over {
    border-color: var(--gold);
    background: rgba(212, 162, 78, 0.08);
}

.wf-file-loaded {
    margin-top: 6px;
    font-size: 11px;
    color: var(--success);
}

/* ── Data Preview (bottom) ── */
.wf-preview {
    height: 0;
    overflow: hidden;
    background: var(--bg-panel);
    border-top: 1px solid var(--border);
    transition: height 0.25s ease;
    flex-shrink: 0;
}

.wf-preview.visible {
    height: var(--wf-preview-h);
}

.wf-preview-bar {
    display: flex;
    align-items: center;
    padding: 4px 12px;
    gap: 10px;
    border-bottom: 1px solid var(--border);
    height: 30px;
}

.wf-preview-title {
    font-weight: 600;
    font-size: 12px;
    color: var(--text);
}

.wf-preview-stats {
    font-size: 11px;
    color: var(--text-muted);
    flex: 1;
}

.wf-preview-table-wrap {
    overflow: auto;
    height: calc(var(--wf-preview-h) - 30px);
}

.wf-preview-table {
    width: max-content;
    min-width: 100%;
    border-collapse: collapse;
    font-size: 12px;
    font-family: var(--mono);
}

.wf-preview-table th {
    position: sticky;
    top: 0;
    background: var(--bg-surface);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.3px;
    font-size: 10px;
    font-weight: 600;
    padding: 4px 10px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
}

.wf-preview-table th:hover {
    color: var(--gold);
}

.wf-preview-table td {
    padding: 3px 10px;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--text);
}

.wf-preview-table tr:hover td {
    background: rgba(255, 255, 255, 0.03);
}

/* ── Mobile overrides ── */
@media (max-width: 768px) {
    :root {
        --wf-palette-w: 150px;
        --wf-inspector-w: 200px;
        --wf-preview-h: 160px;
    }

    .wf-topbar-title {
        display: none;
    }
}