/* ==========================================
   Glossary — inline explanations
   Paired with js/glossary.js. Two presentations of the same dictionary:
   an ⓘ trigger next to a label, and a collapsible explainer panel.
   ========================================== */

/* ── The ⓘ trigger ───────────────────────── */

.info-tip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    margin-left: 2px;
    padding: 0;
    flex: 0 0 auto;
    border: 1px solid var(--line-2);
    border-radius: 50%;
    background: transparent;
    color: var(--text-secondary);
    /* Serif italic 'i' reads as an info marker at 10px where a sans 'i' just looks like a
       stray character. */
    font-family: Georgia, "Times New Roman", serif;
    font-style: italic;
    font-size: 10px;
    font-weight: 700;
    line-height: 1;
    cursor: help;
    vertical-align: middle;
    transition: var(--transition-smooth, all 0.2s ease);
}

.info-tip:hover,
.info-tip:focus-visible {
    border-color: var(--primary-color);
    background: var(--hover-color);
    color: var(--primary-color);
    outline: none;
}

.info-tip[aria-expanded="true"] {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: var(--bg);
}

/* Labels are often flex containers; keep the icon on the same line as the text. */
label:has(> .info-tip),
.label:has(> .info-tip) {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    flex-wrap: wrap;
}

/* ── The popover ─────────────────────────── */

.info-popover {
    position: absolute;
    z-index: 9000;
    width: min(360px, calc(100vw - 24px));
    max-height: 60vh;
    overflow-y: auto;
    padding: 16px 18px;
    border: 1px solid var(--line-2);
    border-radius: 10px;
    background: var(--dark-bg-tertiary);
    box-shadow: 0 14px 40px rgba(0, 0, 0, 0.55);
    color: var(--text-secondary);
    font-size: 0.82rem;
    line-height: 1.55;
}

.info-popover h4 {
    margin: 0 24px 6px 0;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 700;
}

.info-popover-short {
    margin: 0 0 10px;
    color: var(--text-primary);
    font-weight: 600;
}

.info-popover p {
    margin: 0 0 8px;
}

.info-popover ul {
    margin: 0 0 8px;
    padding-left: 18px;
}

.info-popover li {
    margin-bottom: 5px;
}

.info-popover code {
    padding: 1px 5px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.06);
    font-family: var(--font-mono);
    font-size: 0.78em;
    color: var(--accent-2);
}

.info-popover strong {
    color: var(--text-primary);
}

.info-popover-close {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 22px;
    height: 22px;
    padding: 0;
    border: none;
    border-radius: 4px;
    background: transparent;
    color: var(--text-muted);
    font-size: 0.75rem;
    cursor: pointer;
}

.info-popover-close:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
}

.info-popover-related {
    margin: 10px 0 0;
    padding-top: 8px;
    border-top: 1px solid var(--line);
    font-size: 0.75rem;
}

.info-popover-related span {
    color: var(--text-muted);
}

.info-popover-related a {
    color: var(--primary-color);
    text-decoration: none;
}

.info-popover-related a:hover {
    text-decoration: underline;
}

/* ── The explainer panel ─────────────────── */

.info-panel {
    margin: 0 0 24px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: rgba(34, 199, 224, 0.035);
    overflow: hidden;
}

.info-panel-summary {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    cursor: pointer;
    list-style: none;
    user-select: none;
}

.info-panel-summary::-webkit-details-marker {
    display: none;
}

.info-panel-summary:hover {
    background: var(--hover-color);
}

.info-panel-icon {
    color: var(--primary-color);
    font-size: 1rem;
}

.info-panel-title {
    flex: 1;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 600;
}

.info-panel-chevron {
    color: var(--text-muted);
    font-size: 0.8rem;
    transition: transform 0.2s ease;
}

.info-panel[open] .info-panel-chevron {
    transform: rotate(90deg);
}

.info-panel-body {
    padding: 4px 18px 18px;
    border-top: 1px solid var(--line);
}

.info-panel-terms {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 18px;
    margin-top: 16px;
}

.info-panel-term h4 {
    margin: 0 0 4px;
    color: var(--primary-color);
    font-size: 0.88rem;
    font-weight: 700;
}

.info-panel-term p {
    margin: 0 0 7px;
    color: var(--text-secondary);
    font-size: 0.8rem;
    line-height: 1.55;
}

.info-panel-term .info-panel-short {
    color: var(--text-primary);
    font-weight: 600;
}

.info-panel-term ul {
    margin: 0 0 7px;
    padding-left: 18px;
    color: var(--text-secondary);
    font-size: 0.8rem;
    line-height: 1.55;
}

.info-panel-term li {
    margin-bottom: 4px;
}

.info-panel-term strong {
    color: var(--text-primary);
}

.info-panel-term code {
    padding: 1px 5px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.06);
    font-family: var(--font-mono);
    font-size: 0.76em;
    color: var(--accent-2);
}

/* ── The relationship diagram ────────────── */

.info-relationship {
    margin-top: 14px;
    padding: 14px 16px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--dark-bg);
}

.info-rel-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 7px;
    padding: 5px 0;
}

.info-rel-node {
    padding: 3px 10px;
    border: 1px solid var(--line-2);
    border-radius: 5px;
    background: var(--dark-bg-secondary);
    color: var(--text-primary);
    font-size: 0.76rem;
    font-weight: 600;
    white-space: nowrap;
}

.info-rel-node--accent {
    border-color: rgba(34, 199, 224, 0.4);
    color: var(--primary-color);
}

.info-rel-arrow {
    color: var(--text-muted);
    font-size: 0.7rem;
}

.info-rel-arrow::after {
    content: " →";
}

.info-rel-note {
    color: var(--text-muted);
    font-size: 0.72rem;
    font-style: italic;
}

.info-rel-caption {
    margin: 10px 0 0;
    color: var(--text-secondary);
    font-size: 0.76rem;
    line-height: 1.55;
}

@media (max-width: 640px) {
    .info-panel-terms {
        grid-template-columns: 1fr;
    }

    .info-rel-note {
        flex-basis: 100%;
    }
}