html,
body {

    height:100%;
    margin:0;

    overflow:hidden;

    font-family:Arial, Helvetica, sans-serif;

}

#map {

    height:100vh;
    width:100vw;

    background:#e6f2f7;

}

#sidebar {

    position:absolute;

    top:0;
    right:0;

    width:540px;
    height:100%;

    background:white;

    box-shadow:-4px 0px 10px rgba(0,0,0,0.2);

    z-index:1000;

    padding:20px;

    box-sizing:border-box;

    overflow-y:auto;

    transition:transform 0.35s ease;

}

.hidden {

    transform:translateX(100%);

}

#closeBtn {

    float:right;

    border:none;

    background:none;

    font-size:22px;

    cursor:pointer;

}

/* ======================================================
   Left Panel Stack (Filter Panel, Hydrogen Legend, Live Grid Widget)
   ====================================================== */
/* Flexbox stack instead of three independently hardcoded top offsets
   — the previous approach broke every time a panel's content grew
   (this happened twice this session already: a new filter row, then
   a taller legend). space-evenly distributes whatever space is
   actually available between the real, current heights of the three
   panels automatically, so this doesn't need manual re-tuning again.
   overflow-y:auto is a safety net — if the three panels' real content
   is ever taller than the viewport even with zero gap, this scrolls
   internally instead of the bottom panel silently running off-screen
   with no way to reach it. */
#leftPanelStack {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    width: 280px; /* wide enough for the widest panel + its collapse tab */
    display: flex;
    flex-direction: column;
    justify-content: space-evenly;
    align-items: flex-start;
    padding: 16px 0;
    box-sizing: border-box;
    z-index: 999;
    pointer-events: none; /* clicks pass through the gaps to the map underneath */
}

.left-panel {
    position: relative;
    pointer-events: auto;
    box-sizing: border-box;
    transition: transform 0.3s ease;
}

/* Slides left, but not the full 100% — leaves exactly the collapse
   button's own width visible at the left edge, so it stays reachable
   to reopen the panel. Uses a percentage (not a fixed px offset), so
   this works correctly for each panel's own width automatically
   (they're not all the same width). */
.left-panel.collapsed {
    transform: translateX(calc(-100% + 26px));
}

.panel-collapse-btn {
    position: absolute;
    top: 8px;
    right: 6px;
    width: 22px;
    height: 22px;
    padding: 0;
    border: none;
    border-radius: 5px;
    background: #ffffff;
    color: #1890ff;
    font-size: 12px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
    transition: background 0.15s ease, color 0.15s ease;
}

.panel-collapse-btn:hover {
    background: #e6f7ff;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

#filterPanel {

    background:white;

    border-radius:8px;

    box-shadow:0 2px 10px rgba(0,0,0,0.15);

    padding:14px 16px;

    width:220px;

    box-sizing:border-box;

}

#filterPanel h4 {

    margin:0 0 10px 0;

    font-size:12px;
    font-weight:700;
    color:#333;

    text-transform:uppercase;
    letter-spacing:0.5px;

}

.filter-row {

    display:flex;

    align-items:center;
    justify-content:space-between;

    padding:8px 0;

    cursor:pointer;

    border-bottom:1px solid #f0f0f0;

}

.filter-row:last-child {

    border-bottom:none;

}

.filter-row:hover .filter-label {

    color:#1890ff;

}

.filter-label {

    font-size:13px;
    font-weight:500;
    color:#444;

    transition:color 0.3s ease;

}

.filter-dot {

    width:12px;
    height:12px;

    border-radius:50%;

    flex-shrink:0;

    background:#ff4d4f;

    box-shadow:0 0 0 rgba(0,0,0,0);

    transition:background 0.2s ease, box-shadow 0.2s ease;

}

.filter-dot.on {

    background:#52c41a;

    box-shadow:0 0 4px rgba(82,196,26,0.6);

}

/* ======================================================
   Hydrogen Facilities Legend
   ====================================================== */
/* Positioning now handled entirely by #leftPanelStack's flexbox
   layout — no manual offset needed here anymore. */

#hydrogenLegend {

    background:white;

    border-radius:8px;

    box-shadow:0 2px 10px rgba(0,0,0,0.15);

    padding:14px 16px;

    width:190px;

}

#hydrogenLegend h4 {

    margin:0 0 10px 0;

    font-size:12px;
    font-weight:700;
    color:#333;

    text-transform:uppercase;
    letter-spacing:0.5px;

}

.legend-row {

    display:flex;
    align-items:center;
    gap:8px;

    padding:4px 0;

}

.legend-swatch {

    width:12px;
    height:12px;

    border-radius:50%;

    flex-shrink:0;

    border:1.5px solid #fff;
    box-shadow:0 0 0 1px rgba(0,0,0,0.15);

}

.legend-label {

    font-size:12.5px;
    color:#444;

    transition:color 0.3s ease;

}

/* NOTE: filter panel / legend labels deliberately do NOT dim on
   region focus (unlike the map itself) — they're functional UI
   (controls + a color key), not part of the map scene, so keeping
   them at full contrast keeps them usable while a region is open.
   regions.js still toggles a `region-focused` class on <body> in
   case it's useful for other styling later; it just isn't consumed
   here anymore. */

/* Sidebar Interaction Controls Styling */
.sidebar-tabs {
    display: flex;
    gap: 4px;
    background: #f0f2f5;
    padding: 4px;
    border-radius: 6px;
}

.tab-btn {
    flex: 1;
    border: none;
    background: transparent;
    padding: 6px 10px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    color: #595959;
}

.tab-btn:hover {
    color: #1890ff;
}

.tab-btn.active {
    background: #ffffff;
    color: #1890ff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
}

/* Sub-section mode toggle (Daily/Yearly/Total, Historical/Projected,
   etc.) — same visual language as .tab-btn / .sidebar-tabs above.
   Shared by any multi-view sidebar section, not curtailment-specific
   despite the original name. */
.mode-toggle {
    display: flex;
    gap: 4px;
    background: #f0f2f5;
    padding: 4px;
    border-radius: 6px;
}

.mode-btn {
    flex: 1;
    border: none;
    background: transparent;
    padding: 6px 10px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    color: #595959;
}

.mode-btn:hover {
    color: #1890ff;
}

.mode-btn.active {
    background: #ffffff;
    color: #1890ff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
}

/* ======================================================
   Hydrogen Facility Popups (national view)
   ====================================================== */
/* Note: facility markers themselves are now SVG circleMarkers styled
   directly via Leaflet's `style` option in hydrogenFacilities.js
   (color/fillOpacity/dashArray), not CSS — this lets them be cloned
   into the region-focus animation group, which only works for SVG
   elements. Only the popup content below is CSS-styled. */

/* Leaflet's default popup wrapper restyled to match filterPanel's
   shadow/radius language rather than Leaflet's own defaults. */
.leaflet-popup-content-wrapper {
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}

.hf-popup {
    font-family: Arial, Helvetica, sans-serif;
    min-width: 200px;
}

.hf-popup__name {
    font-size: 14px;
    font-weight: 700;
    margin: 0 0 2px;
    color: #222;
}

.hf-popup__meta {
    font-size: 12px;
    color: #555;
    margin: 0 0 4px;
}

.hf-popup__badge {
    display: inline-block;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    padding: 2px 8px;
    border-radius: 100px;
    margin: 4px 0 8px;
}

.hf-popup__badge--operating {
    background: #e3f2e6;
    color: #1e6b34;
}

.hf-popup__badge--closed {
    background: #eee;
    color: #666;
}

.hf-popup__badge--planned {
    background: #fdf2d9;
    color: #8a6414;
}

.hf-popup__note {
    font-size: 12px;
    color: #333;
    line-height: 1.4;
    margin: 0;
    padding-top: 6px;
    border-top: 1px solid #eee;
}

/* ======================================================
   Live GB Grid Widget
   ====================================================== */
/* Positioning now handled entirely by #leftPanelStack's flexbox
   layout — no manual offset needed here anymore. */

#liveGridWidget {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
    padding: 14px 16px;
    width: 260px;
}

#liveGridWidget h4 {
    margin: 0 0 8px 0;
    font-size: 12px;
    font-weight: 700;
    color: #333;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.grid-widget-top-row {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: 10px;
}

.grid-widget-timestamp {
    font-size: 14px;
    font-weight: 700;
    color: #000;
    margin: 0 0 8px;
}

.grid-widget-figure {
    font-size: 20px;
    font-weight: 700;
    color: #1c1c1c;
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.grid-widget-figure-label {
    font-size: 10.5px;
    font-weight: 500;
    color: #888;
    margin-left: 4px;
}

.grid-widget-body {
    display: flex;
    align-items: center;
    gap: 10px;
}

.grid-widget-chart-wrap {
    position: relative;
    width: 90px;
    height: 90px;
    flex-shrink: 0;
}

.grid-widget-legend {
    flex: 1;
    min-width: 0;
}

.grid-widget-legend-row {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 1.5px 0;
    font-size: 11px;
}

.grid-widget-legend-swatch {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.grid-widget-legend-name {
    color: #444;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.grid-widget-legend-value {
    color: #111;
    font-weight: 600;
    flex-shrink: 0;
}

.grid-widget-caveat {
    font-size: 10px;
    color: #999;
    line-height: 1.4;
    margin: 10px 0 0;
    padding-top: 6px;
    border-top: 1px solid #eee;
}

.grid-widget-error {
    font-size: 12px;
    color: #999;
    font-style: italic;
    margin: 0;
}

/* ======================================================
   PDF Export Button
   ====================================================== */
/* Positioned within the same top-right area the sidebar occupies
   (sidebar is right:0, width:540px, z-index:1000) — deliberately
   given a LOWER z-index so the sidebar's own slide-in animation
   naturally covers this button when a region is open, and it's
   visible again the moment the sidebar closes. No extra JS needed to
   explicitly show/hide it — this is purely a stacking-order trick. */

#pdfExportBtn {
    position: absolute;
    top: 20px;
    right: 62px;
    z-index: 500;

    display: flex;
    align-items: center;
    gap: 8px;

    padding: 10px 16px;
    border: none;
    border-radius: 6px;
    background: #ffffff;
    color: #1890ff;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    transition: background 0.15s ease;
}

#pdfExportBtn:hover:not(:disabled) {
    background: #f0f8ff;
}

#pdfExportBtn:disabled {
    color: #999;
    cursor: default;
}

#pdfExportBtnSpinner {
    width: 13px;
    height: 13px;
    border-radius: 50%;
    border: 2px solid #e6f7ff;
    border-top-color: #1890ff;
    animation: pdf-btn-spin 0.8s linear infinite;
}

#pdfExportBtnSpinner.hidden {
    display: none;
}

@keyframes pdf-btn-spin {
    to {
        transform: rotate(360deg);
    }
}

/* ======================================================
   User Manual Button
   ====================================================== */
/* Same visual style as #pdfExportBtn, positioned to its left.
   right:260px is an ESTIMATE based on "Print Summary PDF"'s
   approximate rendered width at 13px/600-weight Arial — untested live,
   may need a small nudge once you can actually see both buttons
   side by side. No loading state needed here (unlike the PDF button) —
   this manual is entirely static content, no live data to wait for. */

#userManualBtn {
    position: absolute;
    top: 20px;
    right: 260px;
    z-index: 500;

    padding: 10px 16px;
    border: none;
    border-radius: 6px;
    background: #ffffff;
    color: #1890ff;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    transition: background 0.15s ease;
}

#userManualBtn:hover {
    background: #e6f7ff;
}

/* ======================================================
   About Site Button + Modal
   ====================================================== */
/* Sits in the same top-right stacking context as #pdfExportBtn — same
   z-index, so it's also covered by the sidebar sliding in and visible
   again once it closes, consistent with the PDF button's behaviour. */

#aboutSiteBtn {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 500;

    width: 34px;
    height: 34px;
    border: none;
    border-radius: 50%;
    background: #ffffff;
    color: #1890ff;
    font-family: Georgia, "Times New Roman", serif;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    transition: background 0.15s ease;
}

#aboutSiteBtn:hover {
    background: #e6f7ff;
}

#aboutSiteOverlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.45);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
}

#aboutSiteOverlay.hidden {
    display: none;
}

#aboutSiteModal {
    position: relative;
    background: #ffffff;
    border-radius: 10px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
    padding: 28px 32px;
    max-width: 480px;
    width: 90%;
    max-height: 80vh;
    font-family: Arial, Helvetica, sans-serif;
    color: #333;
    display: flex;
    flex-direction: column;
}

/* Scrolls independently of the close button above — this is what
   fixes the button scrolling away with the content, since it was
   previously a child of the same element that had overflow-y:auto. */
#aboutSiteContent {
    overflow-y: auto;
    padding-top: 6px; /* clears the close button, which sits at top:14px/right:14px on the outer box */
}

#aboutSiteModal h3 {
    margin: 0 0 14px 0;
    font-size: 18px;
    color: #111;
}

#aboutSiteModal h4 {
    margin: 20px 0 8px 0;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: #666;
}

#aboutSiteModal p {
    margin: 0 0 12px 0;
    font-size: 13.5px;
    line-height: 1.55;
}

#aboutSiteModal a {
    color: #1890ff;
    text-decoration: none;
}

#aboutSiteModal a:hover {
    text-decoration: underline;
}

#aboutSiteSources {
    margin: 0;
    padding-left: 18px;
    font-size: 13px;
    line-height: 1.6;
}

#aboutSiteBathLogo {
    display: block;
    height: 40px;
    width: auto;
    margin: 10px 0 4px 0;
}

#aboutSiteCloseBtn {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 26px;
    height: 26px;
    border: none;
    border-radius: 50%;
    background: #f0f2f5;
    color: #666;
    font-size: 16px;
    cursor: pointer;
    line-height: 1;
}

#aboutSiteCloseBtn:hover {
    background: #e6f7ff;
    color: #1890ff;
}