zhc_ir 0.8.3

Graph-based intermediate representation framework with dialect support
Documentation 
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/* Reset and full viewport */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #ffffff;
}

/* Viewport container - catches mouse events */
#viewport {
    width: 100%;
    height: 100%;
    overflow: hidden;
    cursor: grab;
}

#viewport.grabbing {
    cursor: grabbing;
}

/* Canvas - the transform target */
#canvas {
    width: 100%;
    height: 100%;
    transform-origin: 0 0;
    /* Will be set by JS: transform: translate(x, y) scale(k) */
}

/* SVG fills the canvas */
#canvas svg {
    width: 100%;
    height: 100%;
    display: block;
}

/* Hover highlighting for values */
.input-port, .output-port, .link {
    transition: opacity 0.15s ease, stroke-width 0.15s ease;
}

/* Hitarea for links - wider invisible stroke for easier hover detection */
.link-hitarea {
    pointer-events: stroke;
}

.input-port.highlight, .output-port.highlight {
    filter: drop-shadow(0 0 4px rgba(0, 100, 200, 0.8));
}

.link.highlight {
    stroke-width: 3px !important;
    filter: drop-shadow(0 0 3px rgba(0, 100, 200, 0.6));
}

.input-port.dimmed, .output-port.dimmed, .link.dimmed {
    opacity: 0.15;
}

/* Pinned elements stay visible even when others are dimmed */
.input-port.pinned, .output-port.pinned, .link.pinned {
    opacity: 1 !important;
}

/* Per-node color picker popup */
.color-picker {
    position: fixed;
    display: flex;
    gap: 4px;
    padding: 6px;
    background: white;
    border: 1px solid #ddd;
    border-radius: 6px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    z-index: 1000;
}

.color-swatch {
    width: 22px;
    height: 22px;
    border: 1px solid rgba(0, 0, 0, 0.15);
    border-radius: 50%;
    cursor: pointer;
    padding: 0;
}

.color-swatch:hover {
    transform: scale(1.15);
}

.color-clear {
    background: white;
    color: #888;
    font-size: 16px;
    line-height: 1;
}

/* ============================================ */
/* Search box                                   */
/* ============================================ */

#search-box {
    position: fixed;
    top: 12px;
    right: 12px;
    z-index: 1100;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 8px;
    background: white;
    border: 1px solid #ccc;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.18);
    font-family: system-ui, sans-serif;
    font-size: 13px;
}

#search-box.hidden {
    display: none;
}

#search-input {
    width: 200px;
    padding: 4px 6px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 13px;
    outline: none;
}

#search-input:focus {
    border-color: #4dabf7;
}

#search-count {
    min-width: 48px;
    text-align: center;
    color: #868e96;
    font-variant-numeric: tabular-nums;
}

#search-count.no-match {
    color: #e03131;
}

#search-box button {
    width: 24px;
    height: 24px;
    border: 1px solid #ddd;
    border-radius: 4px;
    background: #f8f9fa;
    cursor: pointer;
    line-height: 1;
    color: #495057;
}

#search-box button:hover {
    background: #e9ecef;
}

/* Highlight boxes drawn behind matched text (inside the SVG, so they zoom
   with the canvas). Bright fill for all hits, hot accent + glow for current. */
.search-hit {
    fill: #ffe000;
    opacity: 0.5;
    pointer-events: none;
}

.search-hit-current {
    fill: #ff9500;
    opacity: 0.85;
    stroke: #d9480f;
    stroke-width: 2px;
    paint-order: stroke;
    filter: drop-shadow(0 0 6px rgba(255, 100, 0, 0.9));
}