/* Book Launch Checklist - layout and styling
   Fixed-height box: title row with progress and buttons, then the
   top-to-bottom Mermaid checklist on the left and the shared infobox panel on
   the right. The height of <main> must equal the CANVAS_HEIGHT comment in
   book-launch-checklist.js. */

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

main {
    box-sizing: border-box;
    height: 490px;
    display: flex;
    flex-direction: column;
    background-color: aliceblue;
    border: 1px solid silver;
    overflow: hidden;
}

.sim-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 4px 12px;
    padding: 8px 14px 6px 14px;
}

.sim-header h1 {
    margin: 0;
    font-size: 22px;
    font-weight: normal;
    color: #111;
}

.stepper {
    display: flex;
    align-items: center;
    gap: 8px;
}

.stepper button {
    font-size: 15px;
    padding: 3px 12px;
    cursor: pointer;
}

.stepper button:disabled {
    cursor: default;
}

.step-label {
    font-size: 15px;
    color: #1f2937;
    min-width: 104px;
    text-align: right;
}

/* Checklist on the left, infobox on the right */
.body {
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    border-top: 1px solid silver;
}

.diagram-column {
    flex: 0 0 45%;
    box-sizing: border-box;
    min-width: 0;
    display: flex;
    flex-direction: column;
    padding: 8px 6px 6px 6px;
}

.diagram {
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.diagram svg {
    max-height: 440px;
    max-width: 100%;
}

.diagram .node {
    cursor: pointer;
    transition: opacity 0.15s;
}

.diagram .node:hover rect {
    filter: brightness(1.12);
}

.diagram .node:focus {
    outline: none;
}

/* The selected node gets a dark halo. (Mermaid writes each node's own stroke
   as an inline !important style, so the highlight is a filter, not a stroke.) */
.diagram .node.selected,
.diagram .node:focus-visible {
    filter: drop-shadow(0 0 1px #111) drop-shadow(0 0 3px #111);
}

/* Publish, before the six confirmations are checked */
.diagram .node.locked {
    opacity: 0.45;
}

/* Legend under the checklist */
.legend {
    flex: 0 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2px 14px;
    padding-top: 4px;
    font-size: 14px;
    color: #334155;
}

.swatch {
    display: inline-block;
    vertical-align: middle;
    margin-right: 5px;
    width: 16px;
    height: 12px;
    border-radius: 3px;
}

.swatch.todo {
    background-color: #00796b;
}

.swatch.done {
    background-color: #2e7d32;
    outline: 2px solid #1b5e20;
    outline-offset: -2px;
}

.swatch.publish {
    background-color: #e65100;
}

/* Shared infobox panel beside the checklist */
.infobox {
    flex: 1 1 55%;
    box-sizing: border-box;
    min-width: 0;
    padding: 12px 14px;
    background-color: white;
    border-left: 1px solid silver;
    font-size: 15px;
    line-height: 1.4;
    color: #1f2937;
    overflow: hidden;
}

.infobox h2 {
    margin: 6px 0 6px 0;
    font-size: 19px;
    color: #111827;
}

.infobox p {
    margin: 0 0 8px 0;
}

.infobox .label {
    font-weight: bold;
}

.infobox .note {
    color: #475569;
}

.infobox .question {
    font-weight: bold;
    margin-bottom: 6px;
}

.infobox .source {
    font-style: italic;
    color: #475569;
}

/* The two candidate reasons */
.answer {
    display: block;
    width: 100%;
    box-sizing: border-box;
    margin: 0 0 8px 0;
    padding: 7px 10px;
    font-family: inherit;
    font-size: 15px;
    line-height: 1.35;
    text-align: left;
    color: #111827;
    background-color: #f1f5f9;
    border: 1px solid #64748b;
    border-radius: 6px;
    cursor: pointer;
}

.answer:hover:not(:disabled) {
    background-color: #e0f2f1;
    border-color: #00796b;
}

.answer:disabled {
    color: #64748b;
    background-color: #f8fafc;
    border-style: dashed;
    text-decoration: line-through;
    cursor: default;
}

.feedback.wrong {
    color: #9a3412;
}

/* State of the selected step */
.badge {
    display: inline-block;
    padding: 2px 9px;
    border-radius: 10px;
    font-size: 13px;
    font-weight: bold;
    background-color: #e2e8f0;
    color: #1f2937;
}

.badge.done {
    background-color: #2e7d32;
    color: white;
}

.badge.warn {
    background-color: #ffc107;
    color: #2b1d00;
}

/* Narrow iframes: smaller type, narrower checklist column */
@media (max-width: 620px) {
    .sim-header h1 {
        font-size: 18px;
    }
    .stepper button,
    .step-label {
        font-size: 13px;
    }
    .stepper button {
        padding: 3px 8px;
    }
    .step-label {
        min-width: 0;
    }
    .diagram-column {
        flex-basis: 40%;
        padding: 6px 2px 4px 2px;
    }
    .diagram {
        align-items: flex-start;
    }
    .legend {
        font-size: 11px;
        gap: 1px 8px;
    }
    .swatch {
        width: 11px;
        height: 9px;
        margin-right: 3px;
    }
    .infobox {
        font-size: 12.5px;
        line-height: 1.3;
        padding: 8px 8px;
    }
    .infobox h2 {
        font-size: 15px;
        margin: 4px 0;
    }
    .infobox p {
        margin-bottom: 5px;
    }
    .answer {
        font-size: 12.5px;
        line-height: 1.25;
        padding: 5px 7px;
        margin-bottom: 6px;
    }
    .badge {
        font-size: 11px;
        padding: 1px 7px;
    }
}