/* Decomposing a House Drawing - layout
 * The page is a fixed-height column: title, network, legend, infobox.
 * The network takes whatever height is left, so the total never changes
 * and the iframe never needs to scroll.
 * Total height must match the CANVAS_HEIGHT comment in the .js file. */

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: Arial, Helvetica, sans-serif;
}

main {
    display: flex;
    flex-direction: column;
    height: 600px;               /* CANVAS_HEIGHT */
    background-color: aliceblue;
    border: 1px solid silver;
    overflow: hidden;
}

.title {
    flex: 0 0 auto;
    padding: 9px 10px 2px 10px;
    font-size: 24px;
    text-align: center;
    color: black;
}

#network {
    flex: 1 1 auto;
    min-height: 0;
    width: 100%;
}

/* ---------- legend (HTML, not inside the canvas) ---------- */
.legend {
    flex: 0 0 auto;
    padding: 6px 12px;
    font-size: 14px;
    line-height: 1.5;
    color: #333333;
    text-align: center;
    background-color: white;
    border-top: 1px solid silver;
}

/* each legend phrase stays together; lines break only between phrases */
.legend-item {
    display: inline-block;
    margin: 0 5px;
    white-space: nowrap;
}

.swatch {
    display: inline-block;
    width: 14px;
    height: 14px;
    margin: 0 4px 0 0;
    border-radius: 4px;
    vertical-align: -2px;
}

.purple { background-color: #9966FF; }
.blue   { background-color: #4C97FF; }
.orange { background-color: #FFAB19; }
.green  { background-color: #0FBD8C; }

/* ---------- infobox ---------- */
.infobox {
    flex: 0 0 112px;
    padding: 8px 14px;
    background-color: #F5F5F5;
    border-top: 1px solid silver;
    color: #333333;
    font-size: 16px;
    line-height: 1.35;
    overflow: hidden;
}

.info-prompt {
    margin-top: 32px;
    text-align: center;
    font-style: italic;
    color: dimgray;
}

.info-heading {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 3px;
}

.info-heading .chip {
    display: inline-block;
    width: 14px;
    height: 14px;
    margin-right: 7px;
    border-radius: 4px;
    vertical-align: -1px;
}

.answer {
    display: inline-block;
    padding: 0 9px;
    margin-left: 4px;
    border-radius: 11px;
    color: white;
    font-weight: bold;
}

.answer.yes    { background-color: #0A8A66; }   /* darker pen green, readable with white text */
.answer.notyet { background-color: #B36B00; }   /* darker control orange */

.info-path {
    margin-top: 3px;
    font-size: 14px;
    color: dimgray;
}

/* tooltip shown when the mouse rests on a box */
div.vis-tooltip {
    position: absolute;
    padding: 5px 9px;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 15px;
    color: #333333;
    background-color: white;
    border: 1px solid #999999;
    border-radius: 6px;
    box-shadow: 2px 2px 5px rgba(0, 0, 0, 0.2);
    pointer-events: none;
    white-space: nowrap;
    z-index: 5;
}

@media (max-width: 520px) {
    .title   { font-size: 19px; }
    .legend  { font-size: 13px; padding: 4px 8px; }
    .legend-item { white-space: normal; }
    .infobox { font-size: 14px; padding: 6px 10px; }
    .info-heading { font-size: 16px; }
    .info-path { display: none; }          /* not enough room on a phone */
    .info-prompt { margin-top: 20px; }
}