/* Category Balance and Overlap Auditor - Chart.js MicroSim Stylesheet
 * ==================================================================
 * Rows: title / controls / main-row (chart + overlap panel) / fixed infobox.
 * The overlap panel sits beside the chart on wide screens and stacks below it
 * on narrow ones.
 */

/* Must stay in sync with CANVAS_HEIGHT in category-balance-overlap-auditor.js */
:root {
    --sim-height: 560px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: aliceblue;
}

.container {
    display: flex;
    flex-direction: column;
    width: 100%;
    height: var(--sim-height);
    padding: 6px 8px 8px 8px;
    gap: 6px;
}

/* ===========================================
   TITLE
   =========================================== */
.title {
    flex: 0 0 auto;
    text-align: center;
    font-size: 17px;
    font-weight: bold;
    color: black;
    line-height: 1.2;
}

/* ===========================================
   CONTROLS
   =========================================== */
.controls {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    flex-wrap: wrap;
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 8px;
    padding: 6px 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hint {
    font-size: 12px;
    color: #546e7a;
}

/* Key for the bar colours. Chart.js's own legend is off: with one dataset it
   would just say "Concepts", while the meaning is carried by per-bar colour. */
.key {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    min-width: 0;
}

.key-item {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    color: #546e7a;
    white-space: nowrap;
}

.sw {
    width: 15px;
    height: 10px;
    border-radius: 2px;
    flex-shrink: 0;
}

.sw-over    { background-color: #e53935; border: 1px solid #b71c1c; }
.sw-overlap { background-color: #cfd8dc; border: 2px solid #ffa000; }
.sw-normal  { background-color: #b0bec5; border: 1px solid #90a4ae; }

.ctl-buttons {
    display: flex;
    gap: 6px;
}

.btn {
    padding: 6px 12px;
    font-size: 12.5px;
    font-weight: bold;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s;
    white-space: nowrap;
}

.btn-gold {
    background-color: #f9a825;
    color: #3e2723;
}

.btn-gold:hover:not(:disabled) { background-color: #f57f17; }

.btn-primary {
    background-color: #1e88e5;
    color: white;
}

.btn-primary:hover:not(:disabled) { background-color: #1565c0; }

.btn-secondary {
    background-color: #757575;
    color: white;
}

.btn-secondary:hover:not(:disabled) { background-color: #616161; }

/* ===========================================
   MAIN ROW: chart + overlap panel
   =========================================== */
.main-row {
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    gap: 6px;
}

.chart-panel {
    flex: 1 1 auto;
    min-width: 0;
    min-height: 0;
    position: relative;
    background-color: white;
    border-radius: 8px;
    padding: 6px 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* ===========================================
   OVERLAP PANEL
   =========================================== */
/* `display: flex` below would otherwise beat the UA stylesheet's rule for the
   HTML hidden attribute, leaving the panel on screen at load. */
.overlap-panel[hidden] {
    display: none;
}

.overlap-panel {
    flex: 0 0 330px;
    min-height: 0;
    display: flex;
    flex-direction: column;
    gap: 5px;
    background-color: #fffdf5;
    border: 2px solid #ffa000;
    border-radius: 8px;
    padding: 7px 9px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.12);
    overflow: hidden;
}

.op-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 6px;
}

.op-title {
    font-size: 12.5px;
    font-weight: bold;
    color: #e65100;
}

.op-close {
    border: none;
    background: transparent;
    font-size: 19px;
    line-height: 1;
    color: #90a4ae;
    cursor: pointer;
    padding: 0 3px;
}

.op-close:hover { color: #37474f; }

.op-cats {
    display: flex;
    gap: 5px;
}

.op-cat {
    flex: 1 1 0;
    min-width: 0;
    background-color: white;
    border: 1px solid #ffcc80;
    border-radius: 5px;
    padding: 4px 6px;
}

.op-cat-name {
    font-size: 11px;
    font-weight: bold;
    color: #37474f;
    margin-bottom: 2px;
}

.op-cat-rule {
    font-size: 10px;
    line-height: 1.35;
    color: #607d8b;
}

.op-label {
    display: block;
    font-size: 9.5px;
    font-weight: bold;
    color: #607d8b;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    margin-bottom: 2px;
}

.op-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.op-list li {
    font-size: 11px;
    background-color: white;
    border: 1px solid #e0e0e0;
    border-left: 3px solid #ffa000;
    border-radius: 3px;
    padding: 2px 6px;
    color: #263238;
}

.op-list li b {
    color: #e65100;
}

.op-prompt {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

#criterion {
    width: 100%;
    font-family: inherit;
    font-size: 11px;
    line-height: 1.35;
    padding: 4px 6px;
    border: 1px solid #b0bec5;
    border-radius: 4px;
    resize: none;
}

#criterion:focus {
    outline: 2px solid #ffa000;
    outline-offset: -1px;
}

/* Progressive disclosure. The panel cannot hold everything at once, and adding a
   scrollbar inside an iframe would fight the page's own scrolling. So once the
   model answer is on screen, collapse what the learner has finished with:
   the two boundary rules, the per-concept arguments, and the submit button.
   What stays is what they still need to compare — the three concept names,
   their own criterion, and the model answer. */
.overlap-panel.model-shown .op-cat-rule {
    display: none;
}

/* concepts collapse to a row of name chips; the arguments have served their purpose */
.overlap-panel.model-shown .op-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 3px;
}

.overlap-panel.model-shown .op-list .reason {
    display: none;
}

.overlap-panel.model-shown .op-list li {
    font-size: 10px;
    padding: 1px 5px;
}

.overlap-panel.model-shown #btn-submit {
    display: none;
}

.overlap-panel.model-shown #criterion {
    rows: 1;
}

.op-model[hidden] {
    display: none;
}

.op-model {
    background-color: white;
    border: 1px solid #a5d6a7;
    border-left: 3px solid #43a047;
    border-radius: 4px;
    padding: 4px 6px;
    font-size: 10.5px;
    line-height: 1.4;
    color: #263238;
    overflow-y: auto;
}

.op-model .model-head {
    font-weight: bold;
    color: #2e7d32;
    display: block;
    margin-bottom: 1px;
}

.op-model .echo {
    display: block;
    margin-top: 3px;
    padding-top: 3px;
    border-top: 1px dashed #cfd8dc;
    color: #546e7a;
    font-style: italic;
}

/* ===========================================
   INFOBOX
   =========================================== */
.infobox {
    flex: 0 0 auto;
    height: 78px;
    display: flex;
    align-items: center;
    background-color: rgba(255, 255, 255, 0.97);
    border-radius: 8px;
    border: 2px solid transparent;
    padding: 6px 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    font-size: 12px;
    line-height: 1.45;
    color: #263238;
    overflow: hidden;
}

.infobox.violation {
    border-color: #e53935;
    background-color: #fff8f7;
}

.infobox.info {
    border-color: #ffa000;
    background-color: #fffdf5;
}

.info-idle {
    width: 100%;
    text-align: center;
    color: #78909c;
    font-size: 12.5px;
}

.info-head {
    font-weight: bold;
    font-size: 12.5px;
    margin-bottom: 2px;
}

.info-head.violation { color: #c62828; }
.info-head.info { color: #e65100; }

.info-body {
    font-size: 11.5px;
    line-height: 1.45;
}

/* ===========================================
   RESPONSIVE
   =========================================== */
@media (max-width: 500px) {
    .title { font-size: 14px; }

    .hint { display: none; }

    .btn { padding: 5px 9px; font-size: 11px; }

    /* spec: comparison panel stacks below the chart on narrow screens */
    .main-row {
        flex-direction: column;
    }

    .overlap-panel {
        flex: 1 1 auto;
    }

    /* the chart yields its space to the panel when the panel is open */
    .main-row.overlap-open .chart-panel {
        display: none;
    }

    .infobox {
        height: 84px;
        font-size: 11px;
    }
}