zui/frontend/src/styles.css

@import "shadcn/dist/tailwind.css";

@tailwind base;
@tailwind components;
@tailwind utilities;

html,
body,
#root {
    height: 100%;
}

body {
    @apply bg-background text-foreground;
}

.reactflow-wrapper {
    width: 100%;
    height: 100%;
    min-height: 0;
}

/* Canvas pane cursors: crosshair for selection box, grab/grabbing for middle-click pan */
.react-flow__pane {
    cursor: crosshair;
}

.react-flow.react-flow--panning .react-flow__pane {
    cursor: grabbing;
}

.react-flow.react-flow--selecting .react-flow__pane {
    cursor: crosshair;
}

/* Node specific overrides */
.react-flow__node {
    display: block;
    overflow: visible;
}

/* Focused node: clear focus ring so keyboard/screen reader users see which node is active */
.react-flow__node:focus {
    outline: none;
}

.react-flow__node:focus-visible>div:first-child {
    border-color: hsl(var(--primary) / 0.5);
    box-shadow: 0 0 0 2px hsl(var(--primary) / 0.15);
}

.dark .react-flow__node:focus-visible>div:first-child {
    border-color: hsl(var(--primary) / 0.35);
    box-shadow: 0 0 0 2px hsl(var(--primary) / 0.1);
}

.react-flow__node .react-flow__handle {
    box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.06);
}

.dark .react-flow__node .react-flow__handle {
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.15);
}

/* Connection validation: valid targets clearly highlighted (from drag start and when hovering), invalid dimmed while connecting */
.react-flow__handle.react-flow__handle-connecting.react-flow__handle-valid,
.react-flow__handle.connection-valid-target {
    background: hsl(var(--primary)) !important;
    color: hsl(var(--primary-foreground));
    box-shadow: 0 0 0 3px hsl(var(--primary)), 0 0 12px 2px hsl(var(--primary) / 0.5) !important;
    opacity: 1 !important;
}

.react-flow__handle.react-flow__handle-connecting.react-flow__handle-valid svg,
.react-flow__handle.connection-valid-target svg {
    color: inherit;
}

.dark .react-flow__handle.react-flow__handle-connecting.react-flow__handle-valid,
.dark .react-flow__handle.connection-valid-target {
    background: hsl(var(--primary)) !important;
    box-shadow: 0 0 0 3px hsl(var(--primary)), 0 0 14px 4px hsl(var(--primary) / 0.6) !important;
}

.react-flow__handle.react-flow__handle-connecting:not(.react-flow__handle-valid):not(.connection-valid-target),
.react-flow__handle.connection-invalid-target {
    opacity: 0.25 !important;
    pointer-events: none;
}

/* Viewport control buttons: same look as React Flow controls; Lucide icons use stroke. */
.rendering-viewport .react-flow__controls-button svg {
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* Rendering node: diagram/wireframe SVG must fit inside the content area. */
.rendering-diagram {
    display: flex;
    align-items: center;
    justify-content: center;
}

.rendering-diagram svg {
    display: block;
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
}

.dark .rendering-diagram svg {
    filter: invert(0.92) hue-rotate(180deg);
}

/* Wireframe: fit HTML preview in viewport (inspired by https://www.wireweave.org/ ). */
.rendering-wireframe__viewport {
    container-type: inline-size;
    container-name: wireframe;
    flex: 1;
    min-height: 0;
    overflow: auto;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.rendering-wireframe__content {
    width: 1200px;
    /* Scale to fit container width so content stays within the node */
    zoom: calc(100cqw / 1200px);
    min-height: min-content;
}

/* Animated React Flow edges: ant trail always on; color shows updating path */
.react-flow__edge path.animated-edge-path,
.animated-edge-path {
    stroke-width: 4;
    stroke: hsl(var(--foreground) / 0.5);
    fill: none;
    stroke-dasharray: 8 6;
    stroke-dashoffset: 0;
    animation: edge-flow 0.5s linear infinite;
    will-change: stroke-dashoffset;
    transform: translateZ(0);
    backface-visibility: hidden;
    transition: stroke 0.2s ease-out;
}

.react-flow__edge path.animated-edge-path.animated-edge-path--updating,
.animated-edge-path.animated-edge-path--updating {
    stroke: hsl(217 91% 60%);
    transition: none;
}

.react-flow__edge path.animated-edge-path.animated-edge-path--paused,
.animated-edge-path.animated-edge-path--paused {
    stroke: hsl(45 98% 50%);
    transition: none;
}

.react-flow__edge path.animated-edge-path.animated-edge-path--error,
.animated-edge-path.animated-edge-path--error {
    stroke: hsl(0 70% 50%);
    transition: none;
}

@keyframes edge-flow {
    0% {
        stroke-dashoffset: 14;
    }

    100% {
        stroke-dashoffset: 0;
    }
}

/* Connection path roles: pushing (trigger) — classes on BaseNode root. Updating nodes have no extra border so rendering doesn’t flash. */
/* Connection path trigger: amber cue to match manual/dirty state (e.g. Run button). */
.connection-path-trigger {

    /*box-shadow: inset 3px 0 0 hsl(38 92% 50%);*/
}

.dark .connection-path-trigger {
    /*box-shadow: inset 3px 0 0 hsl(45 93% 58%); */
}

/* NodeResizer: snappy drag; no border/background on handles; keep resize cursors. */
.react-flow__resize-control {
    touch-action: none;
    user-select: none;
}

.react-flow__resize-control,
.react-flow__resize-control * {
    transition: none;
}

/* Subtle resize handles so they don’t compete with the selected-node ring (primary). Shown only when node is selected. */
/* Single bottom-right resize handle: no border, transparent so only the corner grab area remains. */
/* Handles: invisible (no border/background); cursor unchanged so resize cursors stay. */
.base-node-resize-handle,
.base-node-resize-handle * {
    border: none !important;
    background: transparent !important;
}

/* Resize cursor per position (keep cursor style change on hover). */
.react-flow__resize-control.top.left {
    cursor: nw-resize;
}

.react-flow__resize-control.top.right {
    cursor: ne-resize;
}

.react-flow__resize-control.bottom.left {
    cursor: sw-resize;
}

.react-flow__resize-control.bottom.right {
    cursor: se-resize;
}

.react-flow__resize-control.top {
    cursor: n-resize;
}

.react-flow__resize-control.right {
    cursor: e-resize;
}

.react-flow__resize-control.bottom {
    cursor: s-resize;
}

.react-flow__resize-control.left {
    cursor: w-resize;
}

/* Small helper for monospace pre output */
pre {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, 'Roboto Mono', 'Courier New', monospace;
}

/* Compact scrollbars that respect light/dark mode */
* {
    scrollbar-width: thin;
    scrollbar-color: hsl(var(--muted-foreground) / 0.35) transparent;
}

.dark * {
    scrollbar-color: hsl(var(--muted-foreground) / 0.4) transparent;
}

*::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

*::-webkit-scrollbar-track {
    background: transparent;
}

*::-webkit-scrollbar-thumb {
    background: hsl(var(--muted-foreground) / 0.35);
    border-radius: 3px;
}

*::-webkit-scrollbar-thumb:hover {
    background: hsl(var(--muted-foreground) / 0.5);
}

*::-webkit-scrollbar-corner {
    background: transparent;
}

/* Override Tailwind preflight: use theme border color instead of hardcoded #e5e7eb
   so nodes and sidebar borders respect the design system. */
*,
::before,
::after {
    border-color: hsl(var(--border));
}

.dark *::-webkit-scrollbar-thumb {
    background: hsl(var(--muted-foreground) / 0.4);
}

.dark *::-webkit-scrollbar-thumb:hover {
    background: hsl(var(--muted-foreground) / 0.55);
}

@layer base {
    :root {
        --background: 0 0% 100%;
        --foreground: 0 0% 3.9%;
        --card: 0 0% 100%;
        --card-foreground: 0 0% 3.9%;
        --popover: 0 0% 100%;
        --popover-foreground: 0 0% 3.9%;
        --primary: 0 0% 9%;
        --primary-foreground: 0 0% 98%;
        --secondary: 0 0% 96.1%;
        --secondary-foreground: 0 0% 9%;
        --muted: 0 0% 96.1%;
        --muted-foreground: 0 0% 45.1%;
        --accent: 0 0% 96.1%;
        --accent-foreground: 0 0% 9%;
        --destructive: 0 84.2% 60.2%;
        --destructive-foreground: 0 0% 98%;
        --border: 0 0% 89.8%;
        --input: 0 0% 89.8%;
        --ring: 0 0% 3.9%;
        --chart-1: 12 76% 61%;
        --chart-2: 173 58% 39%;
        --chart-3: 197 37% 24%;
        --chart-4: 43 74% 66%;
        --chart-5: 27 87% 67%;
        --radius: 0.5rem;
        --sidebar-background: 0 0% 98%;
        --sidebar-foreground: 240 5.3% 26.1%;
        --sidebar-primary: 240 5.9% 10%;
        --sidebar-primary-foreground: 0 0% 98%;
        --sidebar-accent: 240 4.8% 95.9%;
        --sidebar-accent-foreground: 240 5.9% 10%;
        --sidebar-border: 220 13% 91%;
        --sidebar-ring: 217.2 91.2% 59.8%;
    }

    .dark {
        --background: 0 0% 3.9%;
        --foreground: 0 0% 98%;
        --card: 0 0% 3.9%;
        --card-foreground: 0 0% 98%;
        --popover: 0 0% 3.9%;
        --popover-foreground: 0 0% 98%;
        --primary: 0 0% 98%;
        --primary-foreground: 0 0% 9%;
        --secondary: 0 0% 14.9%;
        --secondary-foreground: 0 0% 98%;
        --muted: 0 0% 14.9%;
        --muted-foreground: 0 0% 63.9%;
        --accent: 0 0% 14.9%;
        --accent-foreground: 0 0% 98%;
        --destructive: 0 62.8% 30.6%;
        --destructive-foreground: 0 0% 98%;
        --border: 0 0% 14.9%;
        --input: 0 0% 14.9%;
        --ring: 0 0% 83.1%;
        --chart-1: 220 70% 50%;
        --chart-2: 160 60% 45%;
        --chart-3: 30 80% 55%;
        --chart-4: 280 65% 60%;
        --chart-5: 340 75% 55%;
        --sidebar-background: 240 5.9% 10%;
        --sidebar-foreground: 240 4.8% 95.9%;
        --sidebar-primary: 224.3 76.3% 48%;
        --sidebar-primary-foreground: 0 0% 100%;
        --sidebar-accent: 240 3.7% 15.9%;
        --sidebar-accent-foreground: 240 4.8% 95.9%;
        --sidebar-border: 240 3.7% 15.9%;
        --sidebar-ring: 217.2 91.2% 59.8%;
    }
}

/* Nunjucks tokens in code editor: distinct from main language (Prism) */
.token.nunjucks-var {
    color: #7c3aed;
}
.token.nunjucks-tag {
    color: #c2410c;
}
.token.nunjucks-comment {
    color: #0d9488;
}
.dark .token.nunjucks-var {
    color: #a78bfa;
}
.dark .token.nunjucks-tag {
    color: #fb923c;
}
.dark .token.nunjucks-comment {
    color: #2dd4bf;
}

/* Prism default theme adds a background to .token.operator (e.g. "="); remove it in our code editor */
.code-editor .token.operator,
.code-editor .token.entity,
.code-editor .token.url {
    background: none;
}