/* Shared side panels: left "Contents" TOC and right "Topics" navigation.
   Loaded on every page AFTER the theme stylesheet. Themes tint the panels
   by overriding the --panel-* variables; structure and behaviour are
   identical site-wide. Built by tools/site/build.py. */

:root {
    --panel-width: 280px;
    --panel-radius: 16px;
    --panel-bg-a: #FFFFFF;
    --panel-bg-b: #F5F2E8;
    --panel-border: rgba(42, 36, 27, 0.12);
    --panel-shadow: rgba(42, 36, 27, 0.06);
    --panel-heading-font: 'Crimson Pro', serif;
    --panel-heading-color: #2A241B;
    --panel-accent: #B7C7A8;
    --panel-fg: #2A241B;
    --panel-fg-soft: #5C5345;
    --panel-btn-a: #ECE6D2;
    --panel-btn-b: #E0D6BD;
    --panel-btn-fg: #2A241B;
    --panel-chevron-bg: #B7C7A8;
    --panel-chevron-fg: #FFFFFF;
    --panel-hover: rgba(183, 199, 168, 0.25);
    --panel-active-a: rgba(183, 199, 168, 0.35);
    --panel-active-b: rgba(225, 164, 194, 0.15);
    --panel-active-accent: #E1A4C2;
}

.toc-panel, .doc-nav {
    width: var(--panel-width);
    position: sticky;
    top: 2rem;
    align-self: flex-start;
    max-height: calc(100vh - 4rem);
    overflow-y: auto;
    background: linear-gradient(180deg, var(--panel-bg-a) 0%, var(--panel-bg-b) 100%);
    border-radius: var(--panel-radius);
    padding: 1.5rem;
    border: 1px solid var(--panel-border);
    box-shadow: 0 4px 24px var(--panel-shadow);
}

.toc-panel h3, .doc-nav h2 {
    font-family: var(--panel-heading-font);
    font-weight: 600;
    color: var(--panel-heading-color);
    margin: 0 0 1rem 0;
    padding: 0 0 0.75rem 0;
    border-bottom: 3px solid var(--panel-accent);
    border-left: none;
    border-radius: 0;
    background: none;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.doc-nav h2 + ul { margin-bottom: 1rem; }
.toc-panel h3::before { content: "📖"; font-size: 1.05rem; }
.doc-nav h2::before { content: "📚"; font-size: 1.05rem; }

/* ---------- Left panel: per-page contents ---------- */
.toc-panel .toc, .toc-panel .toc ul {
    list-style: none;
    padding-left: 0;
    margin: 0;
}
.toc-panel .toc li { margin: 0; list-style: none; }
.toc-panel .toc-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.35rem;
}
.toc-panel .toc a {
    color: var(--panel-fg-soft);
    text-decoration: none;
    border-bottom: none;
    display: block;
    flex: 1;
    padding: 0.3rem 0.5rem;
    border-radius: 6px;
    border-left: 3px solid transparent;
    line-height: 1.45;
    font-size: 0.88rem;
    transition: background-color 0.2s, color 0.2s;
}
.toc-panel .toc a:hover {
    background: var(--panel-hover);
    color: var(--panel-fg);
}
.toc-panel .toc a.active {
    background: linear-gradient(90deg, var(--panel-active-a), var(--panel-active-b));
    border-left-color: var(--panel-active-accent);
    color: var(--panel-fg);
    font-weight: 600;
}
.toc-panel .toc-sub {
    margin: 0.1rem 0 0.35rem 0.9rem !important;
    border-left: 1px solid var(--panel-border);
    padding-left: 0.35rem !important;
}
.toc-panel .toc-sub a { font-size: 0.83rem; }
.toc-panel .toc-sub[hidden] { display: none; }

.toc-toggle {
    background: var(--panel-chevron-bg);
    color: var(--panel-chevron-fg);
    border: none;
    cursor: pointer;
    width: 1.25rem;
    height: 1.25rem;
    border-radius: 50%;
    flex-shrink: 0;
    font-size: 0.65rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.25s;
}
.toc-toggle[aria-expanded="true"] { transform: rotate(90deg); }

/* ---------- Right panel: shared Topics navigation ---------- */
.doc-nav > ul { padding-left: 0; margin-top: 0; list-style: none; }
.doc-nav li { margin-bottom: 0.5rem; list-style: none; }
.doc-nav li.nav-category {
    margin-top: 0.75rem;
    margin-bottom: 0.5rem;
    border-bottom: none;
    padding-bottom: 0;
}
.doc-nav li.nav-category:first-child { margin-top: 0; }

.doc-nav .nav-toggle {
    background: linear-gradient(135deg, var(--panel-btn-a) 0%, var(--panel-btn-b) 100%);
    border: 1px solid var(--panel-border);
    cursor: pointer;
    width: 100%;
    text-align: left;
    padding: 0.65rem 0.9rem;
    color: var(--panel-btn-fg);
    font: inherit;
    font-weight: 600;
    font-size: 0.92rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    border-radius: 10px;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 3px 12px var(--panel-shadow);
}
.doc-nav .nav-toggle:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px var(--panel-shadow);
}
.doc-nav .nav-icon { flex-shrink: 0; }
.doc-nav .nav-label { flex: 1; }
.doc-nav .nav-toggle-icon {
    font-size: 0.7rem;
    transition: transform 0.25s;
    flex-shrink: 0;
    background: var(--panel-chevron-bg);
    color: var(--panel-chevron-fg);
    width: 1.4rem;
    height: 1.4rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.doc-nav .nav-toggle[aria-expanded="true"] .nav-toggle-icon { transform: rotate(90deg); }

.doc-nav .nav-articles {
    padding-left: 1rem;
    margin: 0.5rem 0 0.75rem;
}
.doc-nav .nav-articles li { margin-bottom: 0.2rem; }
.doc-nav .nav-articles[hidden] { display: none; }
.doc-nav .nav-articles:not([hidden]) { display: block; animation: panelSlideDown 0.3s ease; }
@keyframes panelSlideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}
.doc-nav .nav-articles a {
    color: var(--panel-fg-soft);
    text-decoration: none;
    font-weight: 500;
    display: block;
    padding: 0.4rem 0.65rem;
    border-radius: 8px;
    border-bottom: none;
    border-left: 3px solid transparent;
    font-size: 0.88rem;
    transition: background-color 0.2s, color 0.2s, transform 0.2s;
}
.doc-nav .nav-articles a:hover {
    background: var(--panel-hover);
    color: var(--panel-fg);
    transform: translateX(3px);
}
.doc-nav .nav-articles .active > a {
    background: linear-gradient(90deg, var(--panel-active-a), var(--panel-active-b));
    color: var(--panel-fg);
    border-left-color: var(--panel-active-accent);
    font-weight: 600;
}

/* ---------- Right panel: second accordion level (subtopics) ---------- */
.doc-nav li.nav-subcategory {
    margin-top: 0.5rem;
    margin-bottom: 0.35rem;
}
.doc-nav li.nav-subcategory:first-child { margin-top: 0; }

.doc-nav .nav-subtoggle {
    background: var(--panel-hover);
    border: 1px solid var(--panel-border);
    cursor: pointer;
    width: 100%;
    text-align: left;
    padding: 0.5rem 0.7rem;
    color: var(--panel-fg-soft);
    font: inherit;
    font-weight: 600;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    border-radius: 8px;
    transition: background-color 0.2s, transform 0.2s;
}
.doc-nav .nav-subtoggle:hover {
    background: var(--panel-active-a);
    color: var(--panel-fg);
}
.doc-nav .nav-subtoggle .nav-toggle-icon {
    font-size: 0.6rem;
    width: 1.15rem;
    height: 1.15rem;
}
.doc-nav .nav-subtoggle[aria-expanded="true"] .nav-toggle-icon { transform: rotate(90deg); }

.doc-nav .nav-subarticles {
    padding-left: 0.85rem;
    margin: 0.35rem 0 0.5rem;
}

/* ---------- In-Page / Cross-Site Search Widget ---------- */
.site-search {
    position: relative;
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--panel-border);
}

.search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.search-input-wrapper .search-icon {
    position: absolute;
    left: 0.75rem;
    font-size: 0.9rem;
    opacity: 0.6;
    pointer-events: none;
}

#site-search-input {
    width: 100%;
    padding: 0.55rem 2.2rem 0.55rem 2.2rem;
    font-family: inherit;
    font-size: 0.88rem;
    color: var(--panel-fg);
    background: var(--panel-bg-a);
    border: 1px solid var(--panel-border);
    border-radius: 8px;
    outline: none;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.05);
    transition: border-color 0.2s, box-shadow 0.2s;
}

#site-search-input:focus {
    border-color: var(--panel-accent);
    box-shadow: 0 0 0 3px var(--panel-hover);
}

.search-key-hint {
    position: absolute;
    right: 0.6rem;
    background: var(--panel-btn-a);
    color: var(--panel-fg-soft);
    border: 1px solid var(--panel-border);
    border-radius: 4px;
    padding: 0.1rem 0.4rem;
    font-size: 0.72rem;
    font-family: monospace;
    line-height: 1;
    pointer-events: none;
}

.search-results-dropdown {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--panel-bg-a);
    border: 1px solid var(--panel-border);
    border-radius: 10px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
    max-height: 380px;
    overflow-y: auto;
    padding: 0.4rem 0;
}

.search-results-dropdown[hidden] {
    display: none;
}

.search-result-item {
    display: block;
    padding: 0.6rem 0.85rem;
    text-decoration: none;
    color: var(--panel-fg);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: background 0.15s;
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-result-item:hover,
.search-result-item.selected {
    background: var(--panel-hover);
}

.search-result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-bottom: 0.25rem;
}

.search-result-title {
    font-weight: 600;
    font-size: 0.88rem;
    color: var(--panel-heading-color);
}

.search-result-category {
    font-size: 0.72rem;
    padding: 0.15rem 0.45rem;
    background: var(--panel-active-a);
    color: var(--panel-fg);
    border-radius: 12px;
    font-weight: 500;
    white-space: nowrap;
}

.search-result-snippet {
    font-size: 0.8rem;
    color: var(--panel-fg-soft);
    line-height: 1.35;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.search-result-headings {
    margin-top: 0.35rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}

.search-result-heading-link {
    font-size: 0.75rem;
    color: var(--panel-fg-soft);
    background: var(--panel-btn-a);
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
    text-decoration: none;
}

.search-result-heading-link:hover {
    background: var(--panel-active-accent);
    color: #ffffff;
}

mark.search-highlight {
    background: rgba(255, 230, 0, 0.45);
    color: inherit;
    border-radius: 2px;
    padding: 0 2px;
}

.search-no-results {
    padding: 0.85rem;
    text-align: center;
    font-size: 0.85rem;
    color: var(--panel-fg-soft);
}

/* ---------- Breadcrumb Bar Flex Layout & Visual Summary Trigger ---------- */
.breadcrumbs {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.breadcrumbs-list {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.25rem;
}

.btn-visual-summary {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: linear-gradient(135deg, var(--panel-btn-a) 0%, var(--panel-btn-b) 100%);
    border: 1px solid var(--panel-border);
    color: var(--panel-btn-fg);
    font-family: inherit;
    font-size: 0.82rem;
    font-weight: 600;
    padding: 0.35rem 0.75rem;
    border-radius: 20px;
    cursor: pointer;
    box-shadow: 0 2px 8px var(--panel-shadow);
    transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}

.btn-visual-summary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 14px var(--panel-shadow);
    background: var(--panel-hover);
}

.summary-key-hint {
    background: var(--panel-bg-a);
    color: var(--panel-fg-soft);
    border: 1px solid var(--panel-border);
    border-radius: 4px;
    padding: 0.05rem 0.35rem;
    font-size: 0.7rem;
    font-family: monospace;
    line-height: 1;
}

/* ---------- Visual Summary Overlay Modal ---------- */
.summary-overlay-modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 9999;
    background: rgba(15, 20, 28, 0.65);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    animation: fadeInModal 0.25s ease-out;
}

.summary-overlay-modal-backdrop[hidden] {
    display: none;
}

@keyframes fadeInModal {
    from { opacity: 0; transform: scale(0.97); }
    to { opacity: 1; transform: scale(1); }
}

.summary-overlay-modal {
    background: var(--panel-bg-a);
    color: var(--panel-fg);
    border: 1px solid var(--panel-border);
    border-radius: 16px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
    width: 100%;
    max-width: 640px;
    max-height: 88vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.summary-modal-header {
    padding: 1.2rem 1.5rem;
    background: linear-gradient(180deg, var(--panel-bg-a) 0%, var(--panel-bg-b) 100%);
    border-bottom: 1px solid var(--panel-border);
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
}

.summary-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #1b2a4a;
    background: var(--panel-accent);
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    margin-bottom: 0.35rem;
}

.summary-modal-header h2 {
    font-family: var(--panel-heading-font);
    font-size: 1.25rem;
    margin: 0;
    color: var(--panel-heading-color);
    line-height: 1.3;
}

.summary-modal-close {
    background: none;
    border: none;
    font-size: 1.8rem;
    line-height: 1;
    color: var(--panel-fg-soft);
    cursor: pointer;
    padding: 0.2rem 0.5rem;
    border-radius: 6px;
    transition: background 0.2s, color 0.2s;
}

.summary-modal-close:hover {
    background: var(--panel-hover);
    color: var(--panel-fg);
}

.summary-modal-body {
    padding: 1.25rem 1.5rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.summary-concept-section h3,
.summary-text-section h3 {
    font-size: 0.95rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--panel-heading-color);
    margin: 0 0 0.85rem 0;
    border-bottom: 2px solid var(--panel-accent);
    padding-bottom: 0.35rem;
}

.concept-nodes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 0.75rem;
}

.concept-node {
    background: linear-gradient(135deg, var(--panel-bg-a) 0%, var(--panel-bg-b) 100%);
    border: 1px solid var(--panel-border);
    border-radius: 10px;
    padding: 0.75rem;
    box-shadow: 0 2px 8px var(--panel-shadow);
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    word-break: break-word;
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.concept-jump-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px var(--panel-shadow);
    border-color: var(--panel-accent);
    background: var(--panel-hover);
}

.concept-node-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.concept-node-icon {
    font-size: 1.1rem;
}

.concept-node-jump-icon {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--panel-active-accent);
    opacity: 0.75;
    transition: opacity 0.2s, transform 0.2s;
}

.concept-jump-card:hover .concept-node-jump-icon {
    opacity: 1;
    transform: translate(2px, -2px);
}

.concept-node-label {
    font-weight: 700;
    font-size: 0.88rem;
    color: var(--panel-heading-color);
    line-height: 1.3;
}

.concept-node-links {
    font-size: 0.75rem;
    color: var(--panel-fg-soft);
    font-style: italic;
    margin-top: 0.2rem;
}

.summary-section-block {
    margin-bottom: 0.85rem;
}

.summary-section-block:last-child {
    margin-bottom: 0;
}

.summary-section-block h4 {
    font-size: 0.9rem;
    font-weight: 600;
    margin: 0 0 0.35rem 0;
    color: var(--panel-heading-color);
}

.summary-section-block ul {
    margin: 0;
    padding-left: 1.2rem;
}

.summary-section-block li {
    font-size: 0.88rem;
    line-height: 1.45;
    color: var(--panel-fg);
    margin-bottom: 0.35rem;
}

.summary-modal-footer {
    padding: 0.75rem 1.5rem;
    background: var(--panel-bg-b);
    border-top: 1px solid var(--panel-border);
    font-size: 0.78rem;
    color: var(--panel-fg-soft);
    text-align: center;
}

@media (max-width: 600px) {
    .summary-overlay-modal {
        max-width: 95vw;
        max-height: 90vh;
        border-radius: 12px;
    }
    .summary-modal-header {
        padding: 1rem;
    }
    .summary-modal-body {
        padding: 1rem;
        gap: 1.2rem;
    }
    .concept-nodes-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        gap: 0.5rem;
    }
    .concept-node {
        padding: 0.6rem;
    }
}

@media (max-width: 1200px) {
    .toc-panel, .doc-nav {
        width: 100%;
        position: static;
        max-height: none;
    }
}

/* ---------- Concept Atlas Overlay & Breadcrumb Buttons ---------- */
.breadcrumb-action-buttons {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-toggle-initials {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: linear-gradient(135deg, #3d2314 0%, #5c3820 100%);
    border: 1px solid rgba(212, 175, 55, 0.5);
    color: #F5ECDB;
    font-family: inherit;
    font-size: 0.82rem;
    font-weight: 600;
    padding: 0.35rem 0.75rem;
    border-radius: 20px;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}

.btn-toggle-initials:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(212, 175, 55, 0.3);
    background: linear-gradient(135deg, #5c3820 0%, #aa771c 100%);
}

.btn-concept-atlas {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: linear-gradient(135deg, #1B2A4A 0%, #2A4365 100%);
    border: 1px solid rgba(0, 168, 150, 0.4);
    color: #F5ECDB;
    font-family: inherit;
    font-size: 0.82rem;
    font-weight: 600;
    padding: 0.35rem 0.75rem;
    border-radius: 20px;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}

.btn-concept-atlas:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(0, 168, 150, 0.3);
    background: linear-gradient(135deg, #2A4365 0%, #00A896 100%);
}

.atlas-overlay-modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(10, 15, 25, 0.75);
    backdrop-filter: blur(6px);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.atlas-overlay-modal-backdrop[hidden] {
    display: none !important;
}

.atlas-overlay-modal {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 16px;
    width: 100%;
    max-width: 1100px;
    max-height: 92vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
    overflow: hidden;
}

.atlas-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    background: var(--panel-bg-b);
    border-bottom: 1px solid var(--panel-border);
}

.atlas-modal-title-group {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.atlas-badge {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--panel-active-accent);
}

.atlas-modal-header h2 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--panel-fg);
}

.atlas-header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.atlas-view-toggle-group {
    display: flex;
    background: var(--panel-btn-a);
    border-radius: 8px;
    padding: 3px;
    border: 1px solid var(--panel-border);
}

.atlas-toggle-btn {
    background: transparent;
    border: none;
    color: var(--panel-fg-soft);
    font-family: inherit;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.35rem 0.75rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.atlas-toggle-btn.active {
    background: var(--panel-active-accent);
    color: #ffffff;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.atlas-modal-close {
    background: transparent;
    border: none;
    font-size: 1.8rem;
    line-height: 1;
    color: var(--panel-fg-soft);
    cursor: pointer;
}

.atlas-modal-close:hover {
    color: var(--panel-fg);
}

.atlas-modal-body {
    flex: 1;
    overflow-y: auto;
    padding: 1.25rem;
    background: var(--panel-bg);
}

.atlas-canvas-wrapper {
    width: 100%;
    max-height: 60vh;
    background: #F5ECDB;
    border: 2px solid #D4C5A9;
    border-radius: 10px;
    overflow: hidden;
    display: flex;
    box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.08);
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

.atlas-canvas-wrapper.is-panning {
    cursor: grabbing;
}

#atlas-svg-canvas {
    width: 100%;
    height: auto;
    max-height: 60vh;
    user-select: none;
    -webkit-user-select: none;
}

.atlas-node-group {
    cursor: pointer;
    outline: none;
}

.atlas-node-group * {
    pointer-events: none; /* Prevents inner child flicker */
}

.atlas-node-label {
  font-size: 10px; /* Change to your preferred size (e.g., 12px, 0.8rem, etc.) */
}

.atlas-city-node {
    fill: #2B4C7E;
    stroke: #FFFFFF;
    stroke-width: 2;
    pointer-events: auto;
    cursor: pointer;
    transition: transform 0.15s ease, fill 0.15s ease;
    transform-origin: center;
}

.atlas-node-group:hover .atlas-city-node,
.atlas-node-group:focus-visible .atlas-city-node {
    fill: #E63946;
}

.atlas-city-node.is-current-page {
    fill: #E63946;
    stroke: #FFD700;
    stroke-width: 3;
}

.atlas-city-node.has-concept-hit {
    fill: #00A896;
    stroke: #FFFFFF;
    stroke-width: 2.5;
}

.atlas-hit-pulse {
    animation: hitPulse 2s infinite;
}

@keyframes hitPulse {
    0% { r: 14px; opacity: 0.9; }
    50% { r: 22px; opacity: 0.3; }
    100% { r: 14px; opacity: 0.9; }
}

.atlas-route-banner {
    background: linear-gradient(135deg, #F5ECDB 0%, #E8DCC4 100%);
    border: 1.5px solid #B8A88E;
    border-radius: 8px;
    padding: 7px 14px;
    margin-bottom: 10px;
    height: 78px;
    min-height: 78px;
    max-height: 78px;
    box-sizing: border-box;
    font-family: system-ui, -apple-system, sans-serif;
    font-size: 13px;
    color: #4A3B2C;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    overflow: hidden;
}

.atlas-route-banner div {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
    height: 20px;
    line-height: 20px;
}

.atlas-route-banner strong {
    color: #8C2D19;
}

/* Rich per-pair bridge text (fetched on hover) is longer than the terse
   one-line summaries above -- scroll it inside the banner's existing fixed
   height rather than growing the banner and shifting the map layout. */
.atlas-route-banner-scroll {
    white-space: normal !important;
    overflow-y: auto !important;
    height: 100% !important;
    line-height: 1.35 !important;
}

.atlas-route-banner-scroll p {
    margin: 4px 0;
}

.atlas-road-path {
    cursor: pointer;
    transition: stroke 0.2s ease, stroke-width 0.2s ease, opacity 0.2s ease;
}

.atlas-road-path:hover,
.atlas-road-path.is-highlighted {
    stroke: #E63946 !important;
    stroke-width: 5px !important;
    stroke-dasharray: none !important;
    opacity: 1 !important;
    filter: drop-shadow(0 0 6px rgba(230, 57, 70, 0.6));
}

.atlas-hover-node-label {
    font-family: system-ui, -apple-system, sans-serif;
    font-size: 14px;
    font-weight: 700;
    fill: #0B192C;
    paint-order: stroke fill;
    stroke: #FFFFFF;
    stroke-width: 4px;
    stroke-linejoin: round;
    pointer-events: none;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.25));
}

.atlas-dynamic-route-line {
    stroke: #E63946;
    stroke-width: 4px;
    stroke-dasharray: 8,5;
    fill: none;
    pointer-events: none;
    animation: dashPulse 1.5s linear infinite;
    filter: drop-shadow(0 0 8px rgba(230, 57, 70, 0.7));
}

@keyframes dashPulse {
    to {
        stroke-dashoffset: -26;
    }
}

.atlas-territory-hull {
    transition: fill 0.2s ease, fill-opacity 0.2s ease, stroke 0.2s ease, stroke-width 0.2s ease;
}

.atlas-territory-hull.is-territory-hovered {
    fill-opacity: 0.45 !important;
    stroke: #8C2D19 !important;
    stroke-width: 3px !important;
    filter: drop-shadow(0 0 4px rgba(140, 45, 25, 0.4));
}

.atlas-region-header {
    font-family: Georgia, serif;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 2px;
    fill: #4A3B2C;
    paint-order: stroke fill;
    stroke: #F5ECDB;
    stroke-width: 4px;
    cursor: pointer;
    transition: fill 0.2s ease, transform 0.2s ease;
}

.atlas-journey-trail-container {
    background: linear-gradient(135deg, #F5ECDB 0%, #E8DCC4 100%);
    border: 1.5px solid #B8A88E;
    border-radius: 6px;
    padding: 8px 14px;
    margin: 8px 0 16px 0;
    font-family: system-ui, -apple-system, sans-serif;
    font-size: 13px;
    color: #4A3B2C;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}

.atlas-journey-trail-list {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.atlas-journey-trail-item {
    color: #8C2D19;
    font-weight: 600;
    text-decoration: none;
    transition: color 0.15s ease;
}

.atlas-journey-trail-item:hover {
    color: #008080;
    text-decoration: underline;
}

.atlas-journey-trail-sep {
    color: #B8A88E;
    font-size: 11px;
}

.atlas-journey-trail-item.current {
    color: #1A2530;
    font-weight: 700;
}

.atlas-journey-clear-btn {
    background: none;
    border: none;
    color: #8B7D6B;
    font-size: 12px;
    cursor: pointer;
    padding: 2px 6px;
    border-radius: 4px;
    transition: all 0.15s ease;
}

.atlas-journey-clear-btn:hover {
    color: #8C2D19;
    background: rgba(140, 45, 25, 0.08);
}

.contextual-bridge-container {
    margin: 8px 0 16px 0;
    font-family: system-ui, -apple-system, sans-serif;
}

.contextual-bridge-accordion {
    background: linear-gradient(135deg, #FBF7EF 0%, #F5ECDB 100%);
    border: 1.5px solid #C8B89E;
    border-left: 5px solid #008080;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    overflow: hidden;
    transition: all 0.2s ease;
}

.contextual-bridge-accordion[open] {
    border-color: #B8A88E;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.contextual-bridge-summary {
    padding: 10px 16px;
    cursor: pointer;
    font-size: 13.5px;
    color: #4A3B2C;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    user-select: none;
    font-weight: 500;
}

.contextual-bridge-summary:hover {
    background: rgba(0, 128, 128, 0.05);
}

.contextual-bridge-title-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.contextual-bridge-icon {
    font-size: 16px;
}

.contextual-bridge-badge {
    background: rgba(0, 128, 128, 0.12);
    color: #006666;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11.5px;
    font-weight: 600;
    white-space: nowrap;
}

.contextual-bridge-content {
    padding: 12px 18px 16px 18px;
    border-top: 1px dashed #D4C5A9;
    font-size: 14px;
    line-height: 1.55;
    color: #332619;
    background: rgba(255, 255, 255, 0.55);
}

.contextual-bridge-content strong {
    color: #8C2D19;
}

.contextual-bridge-content em {
    color: #008080;
    font-style: normal;
    font-weight: 600;
}

.atlas-territory-hull:hover {
    stroke-width: 2.5px;
}

.atlas-terrain-glyph {
    pointer-events: none;
}

.atlas-horizon-label {
    font-family: 'Cormorant Garamond', Georgia, serif;
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 2.5px;
    fill: rgba(140, 115, 85, 0.7);
    pointer-events: none !important;
    user-select: none;
    -webkit-user-select: none;
}

.atlas-legend-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 1.2rem;
    margin-top: 0.85rem;
    padding: 0.6rem 1rem;
    background: var(--panel-bg-b);
    border-radius: 8px;
    font-size: 0.78rem;
    color: var(--panel-fg-soft);
}

.atlas-legend-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.legend-swatch {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
}

.legend-you-are-here { background: #E63946; border: 2px solid #FFD700; }
.legend-hit { background: #00A896; }
.legend-mountain { background: #4A3B32; border-radius: 2px; }
.legend-road { background: #A0522D; height: 3px; border-radius: 1px; }
.legend-dragon { background: #8B0000; }

/* Accessible Tree View Styling */
.atlas-tree-intro {
    font-size: 0.85rem;
    color: var(--panel-fg-soft);
    margin-bottom: 1rem;
}

.atlas-tree-group {
    margin-bottom: 0.75rem;
    border: 1px solid var(--panel-border);
    border-radius: 8px;
    background: var(--panel-bg-b);
    overflow: hidden;
}

.atlas-tree-group-title {
    padding: 0.75rem 1rem;
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--panel-fg);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.atlas-tree-list {
    list-style: none;
    margin: 0;
    padding: 0.5rem 1rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.atlas-tree-item {
    padding: 0.6rem;
    border-radius: 6px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
}

.atlas-tree-item.current {
    border-color: #E63946;
    background: rgba(230, 57, 70, 0.05);
}

.atlas-tree-link {
    text-decoration: none;
    color: var(--panel-fg);
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.atlas-tree-link:hover {
    color: var(--panel-active-accent);
}

.atlas-tree-badge {
    font-size: 0.72rem;
    padding: 0.15rem 0.45rem;
    border-radius: 4px;
    font-weight: 600;
}

.badge-current { background: #E63946; color: #FFFFFF; }
.badge-hit { background: #00A896; color: #FFFFFF; }
.badge-dragon { background: #8B0000; color: #FFFFFF; }

.atlas-tree-concepts {
    font-size: 0.78rem;
    color: var(--panel-fg-soft);
    margin-top: 0.25rem;
}

.atlas-modal-footer {
    padding: 0.75rem 1.5rem;
    background: var(--panel-bg-b);
    border-top: 1px solid var(--panel-border);
    font-size: 0.78rem;
    color: var(--panel-fg-soft);
    text-align: center;
}

/* Illuminated Initials & Raised Caps */
.illuminated-lead {
    position: relative;
}

.raised-cap .illuminated-initial-box {
    float: left;
    margin-right: 0.05rem;
    margin-top: -1.25rem;
    margin-bottom: -0.2rem;
}

.dropped-cap .illuminated-initial-box {
    float: left;
    margin-right: 0.1rem;
    margin-top: 0.1rem;
    margin-bottom: 0.1rem;
}

.illuminated-svg {
    width: 4.8rem;
    height: 4.8rem;
    display: block;
}

.word-rest {
    font-weight: 600;
    letter-spacing: -0.01em;
}

.initial-fallback {
    display: none;
    font-weight: 600;
}

/* User preference toggle OFF */
[data-illuminated-initials="disabled"] .illuminated-initial-box {
    display: none !important;
}

[data-illuminated-initials="disabled"] .initial-fallback,
[data-illuminated-initials="disabled"] .word-rest {
    display: inline !important;
    font-weight: normal !important;
}

/* Print fallback */
@media print {
    .illuminated-initial-box {
        display: none !important;
    }
    .initial-fallback, .word-rest {
        display: inline !important;
        font-weight: normal !important;
    }
}


/* ---------- Seasonal margin artwork (assets/seasonal-art.js) ----------
   One fixed, decorative layer behind the page. The script adds .seasonal-on to <html> only while
   artwork is showing, so panels look exactly as before the rest of the year. */
#seasonal-art {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    overflow: hidden;
    color: var(--ink-soft, #5C5345);
    opacity: var(--seasonal-strength, 0.7);
}
#seasonal-art .sa-side { position: absolute; top: 0; bottom: 0; }
#seasonal-art .sa-left {
    left: 0;
    -webkit-mask-image: linear-gradient(to right, #000 68%, transparent 100%);
    mask-image: linear-gradient(to right, #000 68%, transparent 100%);
}
#seasonal-art .sa-right {
    right: 0;
    -webkit-mask-image: linear-gradient(to left, #000 68%, transparent 100%);
    mask-image: linear-gradient(to left, #000 68%, transparent 100%);
}
#seasonal-art svg { display: block; }

@media (min-width: 1201px) {
    .seasonal-on .toc-panel, .seasonal-on .doc-nav {
        background: linear-gradient(180deg,
            color-mix(in srgb, var(--panel-bg-a) 60%, transparent) 0%,
            color-mix(in srgb, var(--panel-bg-b) 60%, transparent) 100%);
    }
}
@media (max-width: 1200px), print {
    #seasonal-art { display: none; }
}

.seasonal-note button {
    background: none; border: 0; padding: 0; font: inherit; color: inherit;
    text-decoration: underline dotted; cursor: pointer;
}
.seasonal-note button:hover { text-decoration-style: solid; }

/* Concept Atlas: 3D view */
.atlas-3d-wrapper {
    position: relative;
    width: 100%;
    height: 60vh;
    min-height: 320px;
    background: #0b0e14;
    border: 2px solid #1d2433;
    border-radius: 10px;
    overflow: hidden;
}

.atlas-3d-status {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    text-align: center;
    color: #c8cfdb;
    font-size: 0.9rem;
}

.atlas-3d-status[hidden],
.atlas-3d-tooltip[hidden] {
    display: none;
}

.atlas-3d-tooltip {
    position: absolute;
    max-width: 260px;
    padding: 0.35rem 0.6rem;
    background: rgba(20, 20, 28, 0.94);
    color: #ffffff;
    border: 1px solid #444b5c;
    border-radius: 6px;
    font-size: 0.78rem;
    pointer-events: none;
}

.atlas-3d-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: 0.85rem;
}

.atlas-3d-legend-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.3rem 0.65rem;
    background: var(--panel-btn-a);
    color: var(--panel-fg);
    border: 1px solid var(--panel-border);
    border-radius: 999px;
    font-family: inherit;
    font-size: 0.76rem;
    cursor: pointer;
}

.atlas-3d-legend-btn[aria-pressed="true"] {
    border-color: var(--panel-active-accent);
    box-shadow: 0 0 0 1px var(--panel-active-accent);
}

.atlas-3d-legend-btn.dimmed {
    opacity: 0.45;
}

.atlas-3d-swatch {
    width: 10px;
    height: 10px;
    border-radius: 2px;
    flex: none;
}

.atlas-3d-count {
    color: var(--panel-fg-soft);
}

.atlas-3d-hint {
    margin: 0.6rem 0 0;
    font-size: 0.78rem;
    color: var(--panel-fg-soft);
}