/* ===== Graph Lab Layout ===== */
body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    margin: 0;
    padding: 0;
    overflow: hidden;
    height: 100vh;
}

.pg-top-nav {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-left: 16px;
}

.pg-nav-label {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.pg-layout {
    display: flex;
    height: calc(100vh - var(--topbar-height));
    margin-top: var(--topbar-height);
}

.pg-panel {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
}

.pg-graph-panel {
    width: 50%;
    border-right: 1px solid var(--border);
}

.pg-right-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* ===== Vertical Gutter (between graph and editor) ===== */
.pg-gutter {
    background: var(--bg-secondary);
    flex-shrink: 0;
}

.pg-gutter-v {
    width: 5px;
    cursor: col-resize;
    border-left: 1px solid var(--border);
    border-right: 1px solid var(--border);
}

.pg-gutter-v:hover,
.pg-gutter-v.dragging {
    background: var(--accent);
}

/* ===== Horizontal Gutter (between editor and console) ===== */
.pg-gutter-h {
    height: 5px;
    cursor: row-resize;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.pg-gutter-h:hover,
.pg-gutter-h.dragging {
    background: var(--accent);
}

/* ===== Graph Toolbar ===== */
.pg-toolbar {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
    flex-wrap: wrap;
}

.pg-tool-group {
    display: flex;
    gap: 2px;
}

.pg-tool-divider {
    width: 1px;
    height: 24px;
    background: var(--border-light);
    margin: 0 4px;
}

.pg-tool {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 5px 8px;
    border: 1px solid transparent;
    border-radius: var(--radius);
    background: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-family: var(--font-heading);
    font-size: 0.8rem;
    transition: all var(--transition);
}

.pg-tool:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.pg-tool.active {
    background: var(--accent-dim);
    color: var(--accent);
    border-color: var(--accent);
}

.pg-toggle {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 5px 8px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: none;
    color: var(--text-muted);
    cursor: pointer;
    font-family: var(--font-heading);
    font-size: 0.8rem;
    transition: all var(--transition);
}

.pg-toggle:hover {
    color: var(--text-primary);
    border-color: var(--border-light);
}

.pg-toggle.active {
    background: var(--accent-dim);
    color: var(--accent);
    border-color: var(--accent);
}

.pg-clear-btn {
    margin-left: auto;
}

/* ===== Graph Canvas ===== */
.pg-canvas-container {
    flex: 1;
    position: relative;
    overflow: hidden;
    background: var(--bg-primary);
}

.pg-canvas-container svg {
    width: 100%;
    height: 100%;
    display: block;
}

/* SVG node/edge defaults */
.pg-canvas-container .pg-node-circle {
    cursor: pointer;
    transition: fill 0.15s, stroke 0.15s;
}

.pg-canvas-container .pg-node-label {
    pointer-events: none;
    user-select: none;
}

.pg-canvas-container .pg-edge-line {
    cursor: pointer;
}

.pg-canvas-container .pg-edge-hitbox {
    stroke: transparent;
    stroke-width: 14;
    fill: none;
    cursor: pointer;
    pointer-events: stroke;
}

.pg-canvas-container .pg-temp-line {
    stroke: var(--accent);
    stroke-width: 2;
    stroke-dasharray: 6 4;
    pointer-events: none;
}

/* ===== Editor Panel ===== */
.pg-editor-panel {
    display: flex;
    flex-direction: column;
    flex: 6;
    min-height: 0;
}

.pg-editor-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
    flex-wrap: wrap;
}

.pg-editor-title {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-right: 8px;
}

.pg-run-controls {
    display: flex;
    gap: 4px;
}

.pg-run-btn {
    padding: 4px 12px;
    font-size: 0.8rem;
}

.pg-ctrl-btn {
    padding: 4px 8px;
    font-size: 0.8rem;
}

.pg-ctrl-btn:disabled {
    opacity: 0.4;
    cursor: default;
}

.pg-speed-control {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: auto;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.pg-speed-control label {
    white-space: nowrap;
}

.pg-speed-control input[type="range"] {
    width: 80px;
    accent-color: var(--accent);
    cursor: pointer;
}

#speedLabel {
    min-width: 40px;
    text-align: right;
}

/* CodeMirror container */
.pg-editor-wrap {
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

.pg-editor-wrap .CodeMirror {
    height: 100%;
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.5;
    background: var(--bg-primary);
}

/* Override CodeMirror material-darker to match theme */
.pg-editor-wrap .cm-s-material-darker.CodeMirror {
    background: var(--bg-primary);
}

.pg-editor-wrap .cm-s-material-darker .CodeMirror-gutters {
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
}

.pg-editor-wrap .cm-s-material-darker .CodeMirror-linenumber {
    color: var(--text-muted);
}

.pg-editor-wrap .cm-s-material-darker .CodeMirror-cursor {
    border-left-color: var(--accent);
}

.pg-editor-wrap .cm-s-material-darker .CodeMirror-selected {
    background: rgba(212, 168, 83, 0.15);
}

.pg-editor-wrap .cm-s-material-darker .CodeMirror-activeline-background {
    background: rgba(255, 255, 255, 0.03);
}

/* ===== Console Panel ===== */
.pg-console-panel {
    flex: 4;
    display: flex;
    flex-direction: column;
    min-height: 0;
    border-top: 1px solid var(--border);
}

.pg-console-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 4px 10px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.pg-console-title {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.pg-console-clear {
    background: none;
    border: none;
    color: var(--text-muted);
    font-family: var(--font-heading);
    font-size: 0.75rem;
    cursor: pointer;
    padding: 2px 6px;
    border-radius: 4px;
}

.pg-console-clear:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.pg-console-output {
    flex: 1;
    overflow-y: auto;
    padding: 8px 12px;
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.5;
    background: var(--bg-primary);
}

.pg-console-print {
    color: var(--text-primary);
}

.pg-console-log {
    color: var(--text-muted);
}

.pg-console-error {
    color: var(--danger);
}

.pg-console-info {
    color: var(--code-color);
}

/* ===== Weight Popover ===== */
.pg-weight-popover {
    position: fixed;
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    font-family: var(--font-heading);
    font-size: 0.85rem;
    color: var(--text-primary);
}

.pg-weight-popover label {
    color: var(--text-secondary);
}

.pg-weight-popover input {
    width: 60px;
    padding: 3px 6px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.pg-weight-popover .btn {
    padding: 3px 10px;
    font-size: 0.8rem;
}

/* ===== Modals ===== */
.pg-modal {
    max-width: 640px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
}

.pg-help-modal {
    max-width: 760px;
}

.pg-examples-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 8px 0;
}

.pg-example-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background var(--transition);
    border: none;
    background: none;
    color: var(--text-primary);
    font-family: var(--font-heading);
    font-size: 0.95rem;
    text-align: left;
    width: 100%;
}

.pg-example-item:hover {
    background: var(--bg-hover);
}

.pg-example-item .pg-example-desc {
    font-family: var(--font-body);
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.pg-example-item .pg-example-info {
    display: flex;
    flex-direction: column;
}

/* ===== Help Content ===== */
.pg-help-content {
    padding: 0 16px 16px;
    font-family: var(--font-body);
    font-size: 0.92rem;
    color: var(--text-primary);
    line-height: 1.6;
}

.pg-help-content h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    color: var(--accent);
    margin: 20px 0 8px;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--border);
}

.pg-help-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 8px 0 16px;
    font-size: 0.85rem;
}

.pg-help-content th {
    text-align: left;
    padding: 6px 10px;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-family: var(--font-heading);
    font-weight: 600;
    border-bottom: 1px solid var(--border);
}

.pg-help-content td {
    padding: 5px 10px;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

.pg-help-content code {
    font-family: var(--font-mono);
    font-size: 0.85em;
    color: var(--code-color);
    background: var(--bg-tertiary);
    padding: 1px 5px;
    border-radius: 3px;
}

.pg-help-content kbd {
    font-family: var(--font-mono);
    font-size: 0.8em;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 3px;
    padding: 1px 5px;
    color: var(--text-secondary);
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
    .pg-layout {
        flex-direction: column;
    }

    .pg-graph-panel {
        width: 100%;
        height: 40vh;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

    .pg-gutter-v {
        display: none;
    }

    .pg-right-panel {
        height: 60vh;
    }

    .pg-editor-panel {
        flex: 3.5;
    }

    .pg-console-panel {
        flex: 2.5;
    }

    .pg-speed-control {
        display: none;
    }

    .pg-editor-header {
        gap: 4px;
    }
}

@media (max-width: 480px) {
    .pg-toolbar {
        padding: 4px 6px;
        gap: 3px;
    }

    .pg-toggle span {
        display: none;
    }

    .pg-ctrl-btn span,
    .pg-run-btn span {
        display: none;
    }
}

/* ===== Scrollbar styling ===== */
.pg-console-output::-webkit-scrollbar,
.pg-help-content::-webkit-scrollbar,
.pg-modal::-webkit-scrollbar {
    width: 6px;
}

.pg-console-output::-webkit-scrollbar-track,
.pg-help-content::-webkit-scrollbar-track,
.pg-modal::-webkit-scrollbar-track {
    background: transparent;
}

.pg-console-output::-webkit-scrollbar-thumb,
.pg-help-content::-webkit-scrollbar-thumb,
.pg-modal::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: 3px;
}

/* ===== Node sublabel ===== */
.pg-node-sublabel {
    font-family: var(--font-mono);
    font-size: 10px;
    fill: var(--text-muted);
    text-anchor: middle;
    pointer-events: none;
}