:root {
            --deep:           #061612;
            --thalo-dark:     #0C2420;
            --thalo:          #123524;
            --thalo-raised:   #184536;
            --thalo-line:     #215946;
            --emerald:        #0E8C6E;
            --emerald-bright: #2DBDA0;
            --emerald-glow:   rgba(45, 189, 160, 0.22);
            --sage:           #8BB0A1;
            --paper:          #E6EFE9;
            --paper-dim:      #AEC3B6;
            --ochre:          #D4A84B;
            --amber:          #E8C26A;
            --border:         rgba(255,255,255,0.07);
            --border-light:   rgba(255,255,255,0.12);
            --radius:         8px;
            --radius-lg:      14px;
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        html, body { height: 100%; overflow: hidden; }
        body {
            font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            color: var(--paper);
            background: var(--deep);
            line-height: 1.5;
            display: flex;
            flex-direction: column;
        }

        /* ── Topbar ─────────────────────────────────────────── */
        .topbar {
            background: rgba(12, 36, 32, 0.85);
            border-bottom: 1px solid var(--border);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            z-index: 100;
            flex: 0 0 auto;
        }
        .topbar-inner {
            max-width: 1600px;
            margin: 0 auto;
            padding: 0 18px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .topbar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            color: inherit;
            transition: opacity 0.18s;
        }
        .topbar-brand:hover { opacity: 0.82; }
        .topbar-mark {
            width: 28px; height: 28px;
            display: grid; place-items: center;
            border-radius: 6px;
            background: #0f2219;
            border: 1px solid rgba(95, 224, 165, 0.35);
            box-shadow: 0 0 10px rgba(14, 140, 110, 0.25);
        }
        .topbar-mark svg { width: 22px; height: 22px; }
        .topbar-logo { font-size: 1.2rem; font-weight: 700; letter-spacing: 0.02em; color: var(--paper); }
        .topbar-logo .accent {
            background: linear-gradient(135deg, var(--emerald-bright) 0%, var(--amber) 90%);
            -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
        }
        .topbar-nav { display: flex; gap: 4px; list-style: none; align-items: center; }
        .topbar-nav a {
            color: var(--sage);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.82rem;
            padding: 6px 12px;
            border-radius: 6px;
            transition: all 0.2s;
        }
        .topbar-nav a:hover { color: var(--paper); background: rgba(255,255,255,0.05); }
        .topbar-nav a.active { color: var(--paper); background: rgba(14, 140, 110, 0.18); }

        /* ── App layout ─────────────────────────────────────── */
        .app {
            flex: 1;
            display: flex;
            min-height: 0;
        }

        .sidebar {
            width: 288px;
            flex-shrink: 0;
            background: var(--thalo-dark);
            border-right: 1px solid var(--border);
            overflow-y: auto;
            padding: 1.25rem 1.25rem 2rem;
        }
        .sidebar-heading {
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.7rem;
            letter-spacing: 0.18em;
            text-transform: uppercase;
            color: var(--emerald-bright);
            margin-bottom: 1.2rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-heading::before {
            content: '';
            width: 22px; height: 1px; background: var(--emerald-bright);
        }

        .control-group {
            margin-bottom: 1.25rem;
            padding-bottom: 1.25rem;
            border-bottom: 1px solid var(--border);
        }
        .control-group:last-child { border-bottom: none; }
        .control-group.is-disabled { opacity: 0.4; pointer-events: none; }
        .segmented.is-disabled    { opacity: 0.4; pointer-events: none; }
        .control-group label.field-label,
        .control-group h4 {
            display: block;
            font-size: 0.72rem;
            text-transform: uppercase;
            letter-spacing: 0.12em;
            color: var(--sage);
            font-weight: 600;
            margin-bottom: 0.6rem;
            font-family: 'JetBrains Mono', monospace;
        }

        select {
            width: 100%;
            padding: 9px 12px;
            font-family: inherit;
            font-size: 0.92rem;
            color: var(--paper);
            background: var(--thalo-raised);
            border: 1px solid var(--thalo-line);
            border-radius: var(--radius);
            cursor: pointer;
            appearance: none;
            background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238BB0A1' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'><path d='M6 9l6 6 6-6'/></svg>");
            background-repeat: no-repeat;
            background-position: right 12px center;
            padding-right: 32px;
            transition: border-color 0.15s, box-shadow 0.15s;
        }
        select:hover  { border-color: var(--emerald); }
        select:focus  { outline: none; border-color: var(--emerald-bright); box-shadow: 0 0 0 3px var(--emerald-glow); }
        select:disabled { cursor: not-allowed; }
        select optgroup {
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--amber);
            background: var(--thalo-dark);
            letter-spacing: 0.06em;
        }
        select optgroup option {
            font-family: 'DM Sans', -apple-system, sans-serif;
            font-weight: 400;
            color: var(--paper);
            background: var(--thalo-raised);
        }

        .slider-row { display: flex; align-items: center; gap: 10px; margin-top: 10px; }

        /* ── Single-year picker (label + amber year + slider) ────── */
        .year-row {
            display: flex;
            align-items: baseline;
            justify-content: space-between;
            gap: 10px;
            margin-bottom: 6px;
        }
        .year-display {
            font-family: 'JetBrains Mono', monospace;
            font-size: 1rem;
            font-weight: 600;
            color: var(--amber);
        }

        /* ── Custom-range year inputs + compute button ─────────── */
        .range-row {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            margin-bottom: 6px;
        }
        .range-row .field-label { margin: 0; font-size: 0.66rem; }
        .range-input {
            width: 68px;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.78rem;
            color: var(--paper);
            background: rgba(255,255,255,0.04);
            border: 1px solid var(--thalo-line);
            border-radius: 4px;
            padding: 4px 6px;
            text-align: center;
        }
        .range-input:focus { outline: none; border-color: var(--emerald-bright); }
        .range-compute {
            width: 100%;
            background: rgba(14,140,110,0.18);
            border: 1px solid var(--emerald);
            color: var(--emerald-bright);
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.72rem;
            letter-spacing: 0.06em;
            padding: 6px 10px;
            border-radius: 5px;
            cursor: pointer;
            transition: all 0.15s;
        }
        .range-compute:hover { background: rgba(14,140,110,0.28); color: var(--paper); }
        .range-compute:disabled { opacity: 0.5; cursor: wait; }
        .range-compute.is-done {
            background: rgba(255,255,255,0.04);
            border-color: var(--thalo-line);
            color: var(--sage);
        }
        /* Spinner pulse — brief visual ack that a click was received while
           the prefetch burst fans out. Added on click, removed on a short
           timeout. */
        .range-compute.is-computing::before {
            content: '';
            display: inline-block;
            width: 10px;
            height: 10px;
            margin-right: 7px;
            vertical-align: -1px;
            border: 2px solid rgba(45, 189, 160, 0.35);
            border-top-color: var(--emerald-bright);
            border-radius: 50%;
            animation: cb-spin 0.7s linear infinite;
        }
        @keyframes cb-spin { to { transform: rotate(360deg); } }

        /* ── Composite builder (parametric index-based event compositing) ── */
        .composite-details {
            border-top: 1px dashed var(--thalo-line);
            padding-top: 10px;
        }
        .composite-details > summary {
            cursor: pointer;
            list-style: none;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.68rem;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--sage);
            display: flex;
            align-items: center;
            gap: 6px;
            user-select: none;
        }
        .composite-details > summary::-webkit-details-marker { display: none; }
        .composite-details > summary::before {
            content: '▸';
            display: inline-block;
            transition: transform 0.12s ease;
            color: var(--emerald-bright);
            margin-right: 2px;
        }
        .composite-details[open] > summary::before { transform: rotate(90deg); }
        .composite-details > summary:hover { color: var(--paper); }
        /* Advanced disclosure — same disclosure-triangle style as the
           composite builder, applied to power-user sections (Parcels). */
        .advanced-details > summary {
            cursor: pointer;
            list-style: none;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.68rem;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--sage);
            display: flex;
            align-items: center;
            gap: 6px;
            user-select: none;
        }
        .advanced-details > summary::-webkit-details-marker { display: none; }
        .advanced-details > summary::before {
            content: '▸';
            display: inline-block;
            transition: transform 0.12s ease;
            color: var(--emerald-bright);
            margin-right: 2px;
        }
        .advanced-details[open] > summary::before { transform: rotate(90deg); }
        .advanced-details > summary:hover { color: var(--paper); }
        /* Map-chrome disclosure — same look as composite-details but tucked
           into the Overlays section. */
        .map-chrome-details > summary {
            cursor: pointer;
            list-style: none;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.66rem;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--sage);
            display: flex;
            align-items: center;
            gap: 6px;
            user-select: none;
            padding-top: 6px;
            border-top: 1px dashed var(--thalo-line);
        }
        .map-chrome-details > summary::-webkit-details-marker { display: none; }
        .map-chrome-details > summary::before {
            content: '▸';
            display: inline-block;
            transition: transform 0.12s ease;
            color: var(--emerald-bright);
        }
        .map-chrome-details[open] > summary::before { transform: rotate(90deg); }
        .map-chrome-details > summary:hover { color: var(--paper); }
        .composite-badge {
            display: inline-block;
            padding: 1px 6px;
            font-size: 0.58rem;
            letter-spacing: 0.1em;
            background: rgba(14,140,110,0.18);
            border: 1px solid var(--emerald);
            border-radius: 3px;
            color: var(--emerald-bright);
            text-transform: uppercase;
        }
        .composite-body { margin-top: 10px; }
        .composite-body select, .composite-body input {
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.78rem;
        }
        .composite-body #composite-index { padding: 7px 10px; padding-right: 28px; }
        .composite-body .field-label { margin-top: 8px; }
        .composite-thresh-row { margin-top: 8px; }
        .composite-thresh-row .range-input { width: 78px; }
        .composite-thresh-row select {
            width: 56px;
            padding: 4px 6px;
            font-size: 0.78rem;
            text-align: center;
            background: rgba(255,255,255,0.04);
            color: var(--paper);
            border: 1px solid var(--thalo-line);
            border-radius: 4px;
        }
        .composite-events {
            margin: 10px 0;
            padding: 8px 10px;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.7rem;
            line-height: 1.6;
            color: var(--sage);
            background: rgba(255,255,255,0.02);
            border: 1px solid var(--thalo-line);
            border-radius: 4px;
            max-height: 120px;
            overflow-y: auto;
            word-break: break-word;
        }
        .composite-events strong {
            color: var(--emerald-bright);
            font-weight: normal;
        }
        .composite-clear-btn[hidden] { display: none; }
        .composite-clear-btn {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            margin-top: 8px;
            padding: 5px 10px;
            font-family: inherit;
            font-size: 0.66rem;
            color: var(--sage);
            background: rgba(255,255,255,0.03);
            border: 1px solid var(--thalo-line);
            border-radius: 4px;
            cursor: pointer;
            transition: background 0.15s, color 0.15s, border-color 0.15s;
        }
        .composite-clear-btn:hover {
            color: var(--paper);
            border-color: var(--emerald);
            background: rgba(14,140,110,0.12);
        }
        .composite-clear-btn span[aria-hidden] {
            font-size: 0.85rem;
            line-height: 0.8;
        }
        .composite-mode-toggle {
            display: flex;
            gap: 0;
            margin: 0 0 12px;
            border: 1px solid var(--thalo-line);
            border-radius: 6px;
            overflow: hidden;
            background: rgba(255,255,255,0.02);
        }
        .composite-mode-toggle button {
            flex: 1;
            padding: 6px 10px;
            background: transparent;
            color: var(--sage);
            border: none;
            border-right: 1px solid var(--thalo-line);
            font-family: inherit;
            font-size: 0.72rem;
            cursor: pointer;
            transition: background 0.15s, color 0.15s;
        }
        .composite-mode-toggle button:last-child { border-right: none; }
        .composite-mode-toggle button:hover { color: var(--paper); }
        .composite-mode-toggle button.active {
            background: rgba(14,140,110,0.18);
            color: var(--emerald-bright);
        }
        .composite-mode-pane[hidden] { display: none; }
        .composite-quick-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin: 8px 0 8px;
        }
        .composite-quick-actions button {
            padding: 4px 10px;
            background: rgba(255,255,255,0.03);
            color: var(--sage);
            border: 1px solid var(--thalo-line);
            border-radius: 4px;
            font-family: inherit;
            font-size: 0.66rem;
            cursor: pointer;
            transition: background 0.15s, color 0.15s, border-color 0.15s;
        }
        .composite-quick-actions button:hover {
            color: var(--paper);
            border-color: var(--emerald);
        }
        .composite-year-chips,
        .composite-month-chips {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(50px, 1fr));
            gap: 4px;
            max-height: 220px;
            overflow-y: auto;
            padding: 6px;
            border: 1px solid var(--thalo-line);
            border-radius: 4px;
            background: rgba(0,0,0,0.15);
        }
        .composite-month-chips {
            grid-template-columns: repeat(6, 1fr);
            max-height: none;
        }
        .composite-year-chips .yr-chip,
        .composite-month-chips .mo-chip {
            padding: 3px 0;
            text-align: center;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.66rem;
            color: var(--sage);
            background: rgba(255,255,255,0.03);
            border: 1px solid transparent;
            border-radius: 3px;
            cursor: pointer;
            user-select: none;
            transition: background 0.1s, color 0.1s, border-color 0.1s;
        }
        .composite-year-chips .yr-chip:hover,
        .composite-month-chips .mo-chip:hover {
            color: var(--paper);
            border-color: var(--thalo-line);
        }
        .composite-year-chips .yr-chip.selected,
        .composite-month-chips .mo-chip.selected {
            background: rgba(14,140,110,0.32);
            color: var(--emerald-bright);
            border-color: var(--emerald);
        }
        .ts-source-link {
            color: var(--emerald-bright);
            text-decoration: none;
            word-break: break-all;
        }
        .ts-source-link:hover { text-decoration: underline; }
        .icon-btn {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            font-size: 0.85rem;
            font-family: inherit;
            background: var(--thalo-raised);
            border: 1px solid var(--thalo-line);
            color: var(--paper);
            border-radius: var(--radius);
            cursor: pointer;
            display: grid;
            place-items: center;
            transition: border-color 0.15s, background 0.15s, color 0.15s, box-shadow 0.15s;
        }
        .icon-btn:hover  { border-color: var(--emerald); }
        .icon-btn:focus  { outline: none; border-color: var(--emerald-bright); box-shadow: 0 0 0 3px var(--emerald-glow); }
        .icon-btn.playing {
            background: var(--emerald);
            border-color: var(--emerald-bright);
            color: var(--deep);
        }

        .slider {
            flex: 1;
            -webkit-appearance: none;
            appearance: none;
            height: 5px;
            background: var(--thalo-raised);
            border: 1px solid var(--thalo-line);
            border-radius: 4px;
            outline: none;
            cursor: pointer;
            padding: 0;
            margin: 0;
        }
        .slider:focus { border-color: var(--emerald-bright); box-shadow: 0 0 0 3px var(--emerald-glow); }
        .slider::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 16px;
            height: 16px;
            background: var(--emerald-bright);
            border: 2px solid var(--deep);
            border-radius: 50%;
            cursor: grab;
            box-shadow: 0 0 0 2px rgba(45, 189, 160, 0.25);
            transition: transform 0.12s;
        }
        .slider::-webkit-slider-thumb:active { cursor: grabbing; transform: scale(1.15); }
        .slider::-moz-range-thumb {
            width: 16px; height: 16px;
            background: var(--emerald-bright);
            border: 2px solid var(--deep);
            border-radius: 50%;
            cursor: grab;
            box-shadow: 0 0 0 2px rgba(45, 189, 160, 0.25);
        }

        .check {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--paper);
            padding: 6px 0;
            cursor: pointer;
            user-select: none;
        }
        .check input[type="checkbox"] {
            appearance: none;
            width: 16px; height: 16px;
            border: 1px solid var(--thalo-line);
            border-radius: 4px;
            background: var(--thalo-raised);
            cursor: pointer;
            display: grid; place-items: center;
            transition: all 0.15s;
        }
        .check input[type="checkbox"]:hover { border-color: var(--emerald); }
        .check input[type="checkbox"]:checked {
            background: var(--emerald);
            border-color: var(--emerald-bright);
        }
        .check input[type="checkbox"]:checked::after {
            content: '';
            width: 4px; height: 8px;
            border: solid var(--deep);
            border-width: 0 2px 2px 0;
            transform: rotate(45deg) translate(-1px, -1px);
        }

        .sidebar-footer {
            margin-top: 0.5rem;
            padding: 0.9rem 0.95rem;
            background: rgba(14, 140, 110, 0.08);
            border: 1px solid rgba(14, 140, 110, 0.25);
            border-radius: var(--radius);
            font-size: 0.78rem;
            color: var(--paper-dim);
            line-height: 1.55;
        }
        .sidebar-footer strong { color: var(--amber); display: block; margin-bottom: 4px; font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; font-family: 'JetBrains Mono', monospace; }
        .sidebar-footer code { font-family: 'JetBrains Mono', monospace; font-size: 0.85em; background: rgba(255,255,255,0.06); padding: 1px 5px; border-radius: 3px; color: var(--paper); }

        /* ── Segmented control (Wind mode) ────────────────── */
        .wind-mode { margin-top: 0.6rem; }
        .wind-mode-label {
            font-size: 0.78rem;
            color: var(--paper);
            margin-bottom: 6px;
            font-weight: 500;
        }
        .segmented {
            display: flex;
            background: var(--thalo-raised);
            border: 1px solid var(--thalo-line);
            border-radius: var(--radius);
            overflow: hidden;
        }
        .segmented button {
            flex: 1;
            background: none;
            border: none;
            color: var(--sage);
            padding: 7px 4px;
            font: inherit;
            font-size: 0.75rem;
            letter-spacing: 0.02em;
            cursor: pointer;
            transition: background 0.15s, color 0.15s;
        }
        .segmented button:hover:not(.active) { color: var(--paper); background: rgba(255,255,255,0.05); }
        .segmented button.active {
            background: var(--emerald);
            color: var(--deep);
            font-weight: 600;
        }
        /* Individual-button unavailable state — used on σ-anom when the
           active field's period lacks σ tiles. Visually quieted and
           click-inert; the attribute-level title tells the user why. */
        .segmented button.is-unavailable {
            opacity: 0.35;
            cursor: not-allowed;
            pointer-events: none;
        }

        /* ── Canvas area ────────────────────────────────────── */
        .canvas-area {
            flex: 1;
            position: relative;
            background:
                radial-gradient(ellipse at 50% 55%, rgba(14,140,110,0.10) 0%, transparent 55%),
                var(--deep);
            min-width: 0;
        }
        #globe-mount {
            position: absolute;
            inset: 0;
        }
        #globe-mount canvas {
            display: block;
            width: 100% !important;
            height: 100% !important;
            cursor: grab;
        }
        #globe-mount canvas:active { cursor: grabbing; }

        /* ── Colorbar (floating bottom-left) ────────────────── */
        .colorbar {
            position: absolute;
            left: 24px; bottom: 24px;
            background: rgba(12, 36, 32, 0.85);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 14px 16px 12px;
            min-width: 260px;
            max-width: 320px;
            z-index: 50;
        }
        .cb-header {
            display: flex;
            justify-content: space-between;
            align-items: baseline;
            margin-bottom: 8px;
            font-size: 0.85rem;
        }
        .cb-header #cb-title { font-weight: 600; color: var(--paper); flex: 1 1 auto; }
        .cb-header #cb-units { font-family: 'JetBrains Mono', monospace; font-size: 0.75rem; color: var(--sage); margin-left: auto; }
        /* ── Colormap popover (replaces the sidebar Colormap section) ── */
        .cb-cmap-menu {
            position: relative;
            margin-left: 8px;
        }
        .cb-cmap-menu > summary {
            list-style: none;
            cursor: pointer;
            width: 22px; height: 22px;
            display: grid; place-items: center;
            border: 1px solid var(--border);
            border-radius: 5px;
            color: var(--sage);
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.9rem;
            line-height: 1;
            user-select: none;
            transition: color 0.15s, border-color 0.15s;
        }
        .cb-cmap-menu > summary::-webkit-details-marker { display: none; }
        .cb-cmap-menu > summary:hover {
            color: var(--paper);
            border-color: var(--emerald-bright);
        }
        .cb-cmap-menu[open] > summary {
            color: var(--emerald-bright);
            border-color: var(--emerald-bright);
        }
        .cb-cmap-pop {
            position: absolute;
            right: 0;
            bottom: calc(100% + 6px);
            min-width: 180px;
            background: rgba(12, 36, 32, 0.95);
            border: 1px solid var(--border);
            border-radius: 6px;
            padding: 8px 10px;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.45);
            z-index: 60;
        }
        .cb-cmap-pop select {
            width: 100%;
        }
        .cb-sub {
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.66rem;
            color: var(--sage);
            margin: 2px 0 4px;
            letter-spacing: 0.04em;
        }
        .cb-sub[hidden] { display: none; }
        .cb-note {
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.66rem;
            color: var(--ochre);
            margin: 2px 0 4px;
            line-height: 1.45;
            letter-spacing: 0.02em;
        }
        .cb-note[hidden] { display: none; }
        #colorbar-canvas {
            display: block;
            width: 100%;
            height: 12px;
            border-radius: 4px;
        }
        .cb-ticks {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 4px;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.72rem;
            color: var(--paper-dim);
            gap: 6px;
        }
        /* ── Swipe-compare period labels ──────────────────────── */
        .compare-label {
            position: absolute;
            top: 64px;   /* clear of the Globe / Map / Orbit view-toggle in the top-right */
            transform: translateX(-50%);
            background: rgba(12, 36, 32, 0.85);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(232, 194, 106, 0.55);   /* amber, matches divider */
            color: var(--amber);
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            padding: 5px 12px;
            border-radius: 6px;
            pointer-events: none;
            z-index: 70;
            white-space: nowrap;
            transition: left 0.05s linear;
        }
        .compare-label[hidden] { display: none; }
        /* ── Swipe-compare divider handle (arrows + drag hint) ─── */
        .compare-handle {
            position: absolute;
            top: 50%;
            transform: translate(-50%, -50%);
            background: rgba(12, 36, 32, 0.9);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(232, 194, 106, 0.65);
            border-radius: 24px;
            padding: 8px 16px;
            color: var(--amber);
            font-family: 'JetBrains Mono', monospace;
            pointer-events: none;
            z-index: 71;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
            white-space: nowrap;
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.45);
            transition: left 0.05s linear;
        }
        .compare-handle[hidden] { display: none; }
        .compare-handle-arrows {
            font-size: 1.05rem;
            line-height: 1;
            letter-spacing: 0.02em;
            font-weight: 600;
        }
        .compare-handle-hint {
            font-size: 0.62rem;
            opacity: 0.78;
            letter-spacing: 0.08em;
            text-transform: uppercase;
        }
        .cb-tick-input {
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.72rem;
            color: var(--paper-dim);
            background: transparent;
            border: 1px solid transparent;
            border-radius: 3px;
            padding: 1px 5px;
            width: 78px;
            text-align: left;
            transition: border-color 0.15s, color 0.15s;
        }
        .cb-tick-input--right { text-align: right; }
        /* Dotted underline as a pre-hover affordance — signals the number
           is an editable input before the user mouses over it. */
        .cb-tick-input:not(:focus):not(.is-override) {
            text-decoration: underline dotted rgba(174, 195, 182, 0.35);
            text-underline-offset: 3px;
            text-decoration-thickness: 1px;
        }
        .cb-tick-input:hover { border-color: rgba(255,255,255,0.10); }
        .cb-tick-input:focus {
            outline: none;
            border-color: var(--emerald-bright);
            color: var(--paper);
        }
        .cb-tick-input.is-override {
            color: var(--emerald-bright);
            border-color: rgba(45, 189, 160, 0.35);
        }
        .cb-auto {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--sage);
            border-radius: 4px;
            padding: 1px 8px;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.68rem;
            letter-spacing: 0.04em;
            cursor: pointer;
            transition: color 0.15s, border-color 0.15s;
            line-height: 1.4;
            white-space: nowrap;
        }
        .cb-auto:hover { color: var(--paper); border-color: var(--emerald); }
        .cb-auto.is-active {
            color: var(--emerald-bright);
            border-color: rgba(45, 189, 160, 0.45);
            background: rgba(14, 140, 110, 0.08);
        }
        .cb-auto:not(.is-active) { opacity: 0.55; }
        /* Tiny caption below the tick row — nudges users to the fact that
           the min / max numbers are editable inputs. Same style in the
           main colorbar and the cross-section colorbar. */
        .cb-hint {
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.6rem;
            letter-spacing: 0.06em;
            color: var(--sage);
            opacity: 0.5;
            text-align: center;
            margin-top: 3px;
            font-style: italic;
            user-select: none;
            pointer-events: none;
        }

        /* ── Zonal-mean cross-section panel ─────────────────── */
        .xsection {
            position: absolute;
            right: 24px; bottom: 24px;
            background: rgba(12, 36, 32, 0.9);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 12px 14px 10px;
            z-index: 60;
        }
        .xsection[hidden] { display: none; }
        .xs-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 8px;
            font-size: 0.8rem;
            color: var(--paper);
            font-weight: 600;
        }
        .xs-header #xs-title { font-weight: 600; }
        .xs-close {
            background: none;
            border: none;
            color: var(--sage);
            cursor: pointer;
            font-size: 1.1rem;
            padding: 0 4px;
            line-height: 1;
            border-radius: 4px;
        }
        .xs-close:hover { color: var(--paper); background: rgba(255,255,255,0.07); }
        /* Time-series panel: reuses .xsection chrome but parks bottom-left
           so it doesn't collide with the default bottom-right cross-section. */
        .timeseries {
            left: 24px;
            right: auto;
            bottom: 24px;
            min-width: 520px;
            max-width: 640px;
        }
        .timeseries canvas {
            width: 100%;
            display: block;
            background: rgba(255,255,255,0.015);
            border: 1px solid var(--thalo-line);
            border-radius: 4px;
        }
        .timeseries.picking {
            outline: 1px dashed var(--emerald-bright);
            outline-offset: -4px;
        }
        .ts-bounds-row {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-bottom: 8px;
            font-family: 'JetBrains Mono', monospace;
        }
        .ts-bounds-label {
            font-size: 0.66rem;
            color: var(--sage);
            letter-spacing: 0.06em;
            text-transform: uppercase;
        }
        .ts-bounds-input {
            width: 56px !important;
            padding: 3px 5px !important;
            font-size: 0.72rem !important;
        }
        .ts-bounds-sep { color: var(--sage); font-size: 0.7rem; }
        .ts-bounds-apply {
            margin-left: auto;
            padding: 4px 10px !important;
            width: auto !important;
            font-size: 0.66rem !important;
        }
        /* Initial loading overlay shown inside the chart canvas */
        .ts-loading-overlay {
            position: absolute;
            inset: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.78rem;
            color: var(--sage);
            background: rgba(8, 22, 18, 0.86);
            border-radius: 4px;
            pointer-events: none;
        }
        .ts-loading-overlay.hidden { display: none; }
        .ts-loading-bar {
            width: 60%;
            max-width: 280px;
            height: 4px;
            background: rgba(255,255,255,0.08);
            border-radius: 2px;
            overflow: hidden;
        }
        .ts-loading-fill {
            height: 100%;
            background: var(--emerald-bright);
            transition: width 0.25s ease;
        }
        .ts-loading-spin {
            width: 24px;
            height: 24px;
            border: 2px solid rgba(255,255,255,0.12);
            border-top-color: var(--emerald-bright);
            border-radius: 50%;
            animation: ts-spin 0.85s linear infinite;
        }
        @keyframes ts-spin {
            to { transform: rotate(360deg); }
        }
        /* Floating banner shown at the top-centre of the screen while the
           user is in pick-region mode. Must outrank the hover tooltip so
           it's always visible while picking. */
        .ts-pick-banner {
            position: fixed;
            top: 78px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 95;
            padding: 8px 16px;
            background: rgba(14, 140, 110, 0.95);
            color: var(--paper);
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.76rem;
            letter-spacing: 0.04em;
            border: 1px solid var(--emerald-bright);
            border-radius: 4px;
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.35);
            pointer-events: none;
        }
        .ts-pick-banner.hidden { display: none; }
        .ts-pick-banner b { color: #f0f6f2; font-weight: 700; }

        /* Keyboard-shortcut help overlay (toggled by `?`) */
        .shortcut-help {
            position: fixed;
            inset: 0;
            background: rgba(4, 12, 10, 0.7);
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
            z-index: 200;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .shortcut-help[hidden] { display: none; }
        .shortcut-help .sc-card {
            background: rgba(12, 36, 32, 0.97);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 18px 22px 16px;
            max-width: 540px;
            min-width: 420px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.55);
        }
        .shortcut-help .sc-head {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 10px;
            color: var(--paper);
            font-weight: 600;
            font-size: 0.92rem;
        }
        .shortcut-help .sc-close {
            background: none;
            border: none;
            color: var(--sage);
            font-size: 1.3rem;
            cursor: pointer;
            line-height: 1;
            padding: 0 4px;
            border-radius: 4px;
        }
        .shortcut-help .sc-close:hover { color: var(--paper); background: rgba(255,255,255,0.06); }
        .shortcut-help .sc-table {
            width: 100%;
            border-collapse: collapse;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.78rem;
            color: var(--paper);
        }
        .shortcut-help .sc-table td {
            padding: 5px 8px;
            border-bottom: 1px solid var(--thalo-line);
        }
        .shortcut-help .sc-table td:first-child {
            white-space: nowrap;
            color: var(--emerald-bright);
        }
        .shortcut-help .sc-table tr:last-child td { border-bottom: none; }
        .shortcut-help kbd {
            display: inline-block;
            padding: 2px 6px;
            margin: 0 2px;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.72rem;
            background: rgba(255,255,255,0.06);
            border: 1px solid var(--thalo-line);
            border-bottom-width: 2px;
            border-radius: 3px;
            color: var(--paper);
        }
        .shortcut-help .sc-foot {
            margin: 12px 0 0;
            font-size: 0.7rem;
            color: var(--sage);
            line-height: 1.5;
        }
        .shortcut-help .sc-kbd {
            font-family: 'JetBrains Mono', monospace;
            color: var(--emerald-bright);
        }
        /* Override the default `cursor: grab` on the globe canvas while the
           user is in time-series picking mode. !important beats both the
           base rule and the :active variant. */
        #globe-mount canvas.ts-picking,
        #globe-mount canvas.ts-picking:active { cursor: crosshair !important; }
        .xs-expand {
            background: none;
            border: none;
            color: var(--sage);
            cursor: pointer;
            font-size: 0.95rem;
            padding: 0 4px;
            line-height: 1;
            border-radius: 4px;
        }
        .xs-expand:hover { color: var(--paper); background: rgba(255,255,255,0.07); }
        .xsection.expanded {
            right: 24px;
            bottom: 24px;
            top: 24px;
            left: 24px;
            width: auto;
            max-width: none;
            display: flex;
            flex-direction: column;
        }
        .xsection.expanded #xs-canvas {
            width: 100% !important;
            height: 100% !important;
            flex: 1 1 auto;
            min-height: 0;
        }
        .xsection.expanded .xs-cb,
        .xsection.expanded #xs-cb-canvas {
            width: 100%;
        }
        #xs-canvas {
            display: block;
            width: 380px;
            height: 200px;
            border-radius: 4px;
        }
        .xs-diag {
            display: flex;
            align-items: center;
            gap: 10px;
            margin: 0 0 8px 0;
        }
        .xs-diag-label {
            font-size: 0.68rem;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--sage);
            font-family: 'JetBrains Mono', monospace;
        }
        #xs-diag-select {
            flex: 1;
            background: rgba(255,255,255,0.04);
            border: 1px solid var(--border);
            color: var(--paper);
            font: inherit;
            font-size: 0.75rem;
            padding: 4px 8px;
            border-radius: 5px;
            cursor: pointer;
        }
        #xs-diag-select:focus { outline: 1px solid var(--emerald); }
        .field-help {
            font-size: 0.72rem;
            line-height: 1.45;
            color: var(--sage);
            margin: 0 0 8px 0;
        }
        .xs-cb-wrap { margin: 8px 0 2px; }
        .xs-cb {
            display: block;
            width: 380px;
            height: 10px;
            border-radius: 3px;
            border: 1px solid rgba(255,255,255,0.1);
        }
        .xs-cb-labels {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.7rem;
            color: var(--sage);
            margin-top: 3px;
            gap: 6px;
        }
        .xs-cb-mid {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        #xs-cb-units { color: var(--emerald-bright); letter-spacing: 0.04em; }
        /* Inputs in the xs-cb row: same .cb-tick-input styling as the main
           colorbar, slightly narrower so the units + reset button fit on
           380-px-wide xs panels without wrapping. */
        .xs-cb-labels .cb-tick-input { width: 64px; padding: 1px 4px; }
        .xs-footer {
            margin-top: 8px;
            font-size: 0.72rem;
            color: var(--sage);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 8px;
        }
        .xs-footer .xs-kbd {
            font-family: 'JetBrains Mono', monospace;
            background: rgba(255,255,255,0.06);
            padding: 1px 5px;
            border-radius: 3px;
            color: var(--paper);
        }
        .xs-reset {
            background: none; border: 1px solid var(--border);
            color: var(--sage);
            font: inherit; font-size: 0.72rem;
            padding: 2px 8px; border-radius: 4px; cursor: pointer;
        }
        .xs-reset:hover { color: var(--paper); background: rgba(255,255,255,0.06); }

        /* ── M-budget sub-controls inside the cross-section panel ─── */
        .mb-controls {
            display: flex;
            flex-direction: column;
            gap: 6px;
            margin: 4px 0 8px 0;
            padding: 8px 10px;
            background: rgba(6, 22, 18, 0.45);
            border: 1px solid var(--border);
            border-radius: 6px;
        }
        .mb-controls[hidden] { display: none; }
        /* Amber-accented validation caveat for Q-budget and H-budget (shown
           via JS based on xsDiag). Sibling of .mobile-panel-hint in
           visual style; makes the "structure reliable, magnitudes want
           a spot-check" message impossible to miss when either budget
           is active. */
        .budget-caveat {
            margin: 8px 0;
            padding: 8px 10px;
            font-size: 0.7rem;
            line-height: 1.5;
            color: var(--paper-dim);
            border-left: 2px solid var(--amber);
            background: rgba(232, 194, 106, 0.05);
            border-radius: 0 4px 4px 0;
        }
        .budget-caveat[hidden] { display: none; }
        .mb-row {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .mb-row-toggles { gap: 6px; }
        .mb-label {
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.66rem;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            color: var(--sage);
            min-width: 36px;
        }
        #mb-term-select {
            flex: 1;
            background: rgba(255,255,255,0.04);
            border: 1px solid var(--border);
            color: var(--paper);
            font: inherit;
            font-size: 0.75rem;
            padding: 4px 8px;
            border-radius: 5px;
            cursor: pointer;
        }
        .mb-toggle-group {
            display: flex;
            flex: 1;
            background: var(--thalo-raised);
            border: 1px solid var(--thalo-line);
            border-radius: 5px;
            padding: 1px;
            overflow: hidden;
        }
        .mb-toggle {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 3px 4px;
            font-size: 0.7rem;
            color: var(--sage);
            cursor: pointer;
            border-radius: 4px;
            transition: background 0.12s, color 0.12s;
        }
        .mb-toggle:hover { color: var(--paper); }
        .mb-toggle input { display: none; }
        .mb-toggle:has(input:checked) { background: var(--emerald); color: var(--deep); font-weight: 600; }

        /* ── Lorenz energy-cycle panel ───────────────────────── */
        .lorenz {
            position: absolute;
            right: 24px;
            top: 88px;
            background: rgba(12, 36, 32, 0.9);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 12px 14px 10px;
            width: 380px;
            z-index: 60;
            color: var(--paper);
        }
        .lorenz[hidden] { display: none; }
        .lorenz svg {
            display: block;
            width: 100%;
            height: auto;
            margin-top: 4px;
            color: var(--emerald-bright);
        }
        .lorenz .lz-box {
            fill: rgba(14, 140, 110, 0.12);
            stroke: var(--thalo-line);
            stroke-width: 1;
        }
        .lorenz .lz-name {
            fill: var(--amber);
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.04em;
        }
        .lorenz .lz-val {
            fill: var(--paper);
            font-size: 13px;
        }
        .lorenz .lz-arrows line {
            stroke: var(--emerald-bright);
            stroke-width: 1.2;
        }
        .lorenz .lz-arrows .lz-conv {
            fill: var(--paper-dim);
            font-size: 11px;
        }
        .lorenz .lz-arrows .lz-conv.neg {
            fill: var(--ochre);
        }
        .lorenz .xs-footer { font-size: 0.72rem; color: var(--sage); }
        .lz-refchoose {
            display: flex;
            gap: 4px;
            margin: 6px 0 4px 0;
            background: var(--thalo-raised);
            border: 1px solid var(--thalo-line);
            border-radius: var(--radius);
            padding: 2px;
        }
        .lz-refopt {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 5px 6px;
            font-size: 0.74rem;
            color: var(--sage);
            cursor: pointer;
            border-radius: 4px;
            transition: color 0.12s, background 0.12s;
        }
        .lz-refopt:hover { color: var(--paper); }
        .lz-refopt input { display: none; }
        .lz-refopt input:checked + span {
            color: var(--deep);
        }
        .lz-refopt:has(input:checked) {
            background: var(--emerald);
        }
        .lz-refopt:has(input:checked) span { color: var(--deep); font-weight: 600; }
        .lz-info-btn {
            width: 22px; height: 22px;
            border-radius: 50%;
            border: 1px solid var(--thalo-line);
            background: var(--thalo-raised);
            color: var(--sage);
            font: 600 11px 'JetBrains Mono', monospace;
            cursor: pointer;
            display: grid; place-items: center;
            transition: color 0.15s, border-color 0.15s;
        }
        .lz-info-btn:hover { color: var(--paper); border-color: var(--emerald); }
        .lz-info-btn.active { color: var(--deep); background: var(--emerald-bright); border-color: var(--emerald-bright); }
        .lz-info {
            margin-top: 8px;
            padding: 10px 12px;
            background: rgba(6, 22, 18, 0.65);
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 0.74rem;
            line-height: 1.55;
            color: var(--paper-dim);
            /* Cap at 60% of viewport — doesn't crowd the panel on small
               screens, but scales up for users on a big display so the
               expanded content fits mostly in one view. */
            max-height: 60vh;
            overflow-y: auto;
            /* Always-visible scrollbar (macOS default hides it, which
               hid the fact that there's more content below). */
            scrollbar-width: thin;
            scrollbar-color: rgba(139, 176, 161, 0.45) transparent;
        }
        .lz-info::-webkit-scrollbar { width: 8px; }
        .lz-info::-webkit-scrollbar-thumb {
            background: rgba(139, 176, 161, 0.45);
            border-radius: 4px;
        }
        .lz-info::-webkit-scrollbar-thumb:hover {
            background: rgba(139, 176, 161, 0.7);
        }
        .lz-info::-webkit-scrollbar-track { background: transparent; }
        .lz-info[hidden] { display: none; }
        .lz-info p { margin: 6px 0; }
        .lz-info pre {
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.72rem;
            color: var(--paper);
            background: rgba(0, 0, 0, 0.25);
            padding: 6px 8px;
            border-radius: 4px;
            white-space: pre-wrap;
            margin: 4px 0;
        }
        .lz-info b  { color: var(--paper); }
        .lz-info i  { color: var(--sage); }

        /* ── View-mode toggle (Globe | Map) ──────────────────── */
        .view-toggle {
            position: absolute;
            top: 18px; right: 18px;
            display: flex;
            background: rgba(12, 36, 32, 0.80);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            z-index: 55;
        }
        .view-toggle button {
            background: none;
            border: none;
            color: var(--sage);
            padding: 8px 14px;
            font: inherit;
            font-size: 0.8rem;
            letter-spacing: 0.06em;
            cursor: pointer;
            transition: background 0.15s, color 0.15s;
        }
        .view-toggle button.active {
            background: var(--emerald);
            color: var(--deep);
            font-weight: 600;
        }
        .view-toggle button:hover:not(.active) { color: var(--paper); background: rgba(255,255,255,0.05); }

        /* ── Share / Save toolbar (top right, under view-toggle) ─── */
        .share-toolbar {
            position: absolute;
            top: 62px; right: 18px;
            display: flex;
            gap: 8px;
            z-index: 55;
        }
        .share-btn {
            display: inline-flex;
            align-items: center;
            background: rgba(12, 36, 32, 0.85);
            border: 1px solid var(--border);
            color: var(--sage);
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.72rem;
            letter-spacing: 0.04em;
            padding: 5px 11px;
            border-radius: 6px;
            cursor: pointer;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: color 0.15s, border-color 0.15s;
        }
        .share-btn:hover { color: var(--paper); border-color: var(--emerald); }
        .share-btn.is-copied { color: var(--emerald-bright); border-color: rgba(45,189,160,0.45); }

        /* ── Loading overlay (isentropic mode needs ~24 tiles to land) ─── */
        #globe-loading {
            position: absolute;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            pointer-events: none;
            opacity: 0;
            transition: opacity 0.18s ease-out;
            z-index: 40;
        }
        #globe-loading.visible { opacity: 1; }
        .globe-loading-card {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 16px;
            background: rgba(12, 28, 24, 0.88);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border);
            border-radius: 999px;
            color: var(--sage);
            font-size: 0.85rem;
            letter-spacing: 0.04em;
        }
        /* "X of Y tiles loaded" counter on the loading overlay. Tucked
           to the right of the main text, muted; empty when not loading. */
        .globe-loading-progress {
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.72rem;
            color: var(--paper-dim);
            letter-spacing: 0.02em;
        }
        .globe-loading-progress:empty { display: none; }
        .globe-loading-spinner {
            width: 16px;
            height: 16px;
            border-radius: 50%;
            border: 2px solid rgba(146, 229, 196, 0.25);
            border-top-color: var(--emerald-bright);
            animation: gc-spin 0.9s linear infinite;
        }
        @keyframes gc-spin { to { transform: rotate(360deg); } }

        /* ── GIF export modal ─────────────────────────────── */
        .gif-modal {
            position: fixed;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(6, 18, 16, 0.7);
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
            z-index: 100;
        }
        .gif-modal.hidden { display: none; }
        .gif-modal-card {
            width: 360px;
            max-width: calc(100vw - 32px);
            background: rgba(14, 32, 28, 0.97);
            border: 1px solid var(--border);
            border-radius: 12px;
            overflow: hidden;
            color: var(--paper);
            font-size: 0.9rem;
        }
        .gif-modal-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 16px;
            border-bottom: 1px solid var(--border);
            letter-spacing: 0.05em;
            font-weight: 600;
        }
        .gif-close {
            background: none;
            border: 0;
            color: var(--sage);
            font-size: 1.3rem;
            line-height: 1;
            cursor: pointer;
            padding: 0 4px;
        }
        .gif-close:hover { color: var(--paper); }
        .gif-modal-body { padding: 14px 16px; display: flex; flex-direction: column; gap: 10px; }
        .gif-opt {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 10px 12px;
            border: 1px solid var(--border);
            border-radius: 8px;
            cursor: pointer;
            transition: border-color 0.12s;
        }
        .gif-opt:hover { border-color: var(--emerald); }
        .gif-opt input { margin-top: 3px; accent-color: var(--emerald-bright); }
        .gif-opt-title { font-weight: 600; color: var(--paper); }
        .gif-opt-sub { font-size: 0.78rem; color: var(--sage); margin-top: 2px; }
        /* Amber "here's how to enable this" caption, shown via JS when the
           option's prerequisite isn't met (panel closed / compare off). */
        .gif-opt-hint {
            display: none;
            font-size: 0.74rem;
            color: var(--amber);
            margin-top: 4px;
            letter-spacing: 0.02em;
        }
        /* Dim the title + sub in-place (not the whole label) so the amber
           hint below them stays fully saturated and readable. */
        .gif-opt.is-unavailable { pointer-events: none; }
        .gif-opt.is-unavailable .gif-opt-title,
        .gif-opt.is-unavailable .gif-opt-sub { opacity: 0.5; }
        .gif-opt.is-unavailable .gif-opt-hint { display: block; }
        .gif-progress { margin-top: 4px; }
        .gif-progress.hidden { display: none; }
        .gif-progress-bar {
            height: 6px;
            background: rgba(255,255,255,0.08);
            border-radius: 3px;
            overflow: hidden;
        }
        .gif-progress-fill {
            height: 100%;
            width: 0%;
            background: var(--emerald-bright);
            transition: width 0.15s ease-out;
        }
        .gif-progress-text {
            font-size: 0.78rem;
            color: var(--sage);
            margin-top: 6px;
            text-align: center;
        }
        .gif-modal-actions {
            display: flex;
            gap: 8px;
            padding: 12px 16px;
            border-top: 1px solid var(--border);
            justify-content: flex-end;
        }
        .gif-btn-secondary, .gif-btn-primary {
            padding: 8px 14px;
            border-radius: 6px;
            font-size: 0.85rem;
            cursor: pointer;
            font-family: inherit;
        }
        .gif-btn-secondary {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--sage);
        }
        .gif-btn-secondary:hover { color: var(--paper); border-color: var(--emerald); }
        .gif-btn-primary {
            background: var(--emerald);
            border: 1px solid var(--emerald);
            color: var(--ink);
            font-weight: 600;
        }
        .gif-btn-primary:disabled { opacity: 0.55; cursor: wait; }
        .gif-btn-primary:hover:not(:disabled) { background: var(--emerald-bright); border-color: var(--emerald-bright); }

        /* ── Controls tips (bottom-right card) ─────────────── */
        .tips-panel {
            position: absolute;
            bottom: 18px;
            right: 18px;
            width: 260px;
            padding: 12px 14px 12px;
            background: rgba(12, 28, 24, 0.85);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border);
            border-radius: 10px;
            color: var(--sage);
            font-size: 0.75rem;
            z-index: 45;
            transition: opacity 0.25s, transform 0.25s;
        }
        .tips-panel.hidden { opacity: 0; pointer-events: none; transform: translateY(6px); }
        .tips-title {
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.68rem;
            letter-spacing: 0.14em;
            text-transform: uppercase;
            color: var(--emerald-bright);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .tips-title::before {
            content: ''; width: 14px; height: 1px; background: var(--emerald-bright);
        }
        .tips-row { display: flex; gap: 10px; align-items: center; padding: 4px 0; }
        .tips-kbd {
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.72rem;
            background: rgba(255,255,255,0.07);
            color: var(--paper);
            padding: 2px 7px;
            border-radius: 4px;
            min-width: 58px;
            text-align: center;
            border: 1px solid rgba(255,255,255,0.05);
        }
        .tips-desc { flex: 1; color: var(--sage); }
        .tips-dismiss {
            position: absolute;
            top: 6px; right: 8px;
            background: none; border: none;
            color: var(--sage);
            cursor: pointer;
            font-size: 1rem;
            line-height: 1;
            padding: 2px 5px;
            border-radius: 4px;
        }
        .tips-dismiss:hover { color: var(--paper); background: rgba(255,255,255,0.06); }

        /* ── Tips re-open pill (surfaces after user dismisses the card) ─ */
        .tips-reopen {
            position: absolute;
            bottom: 18px; right: 18px;
            width: 32px; height: 32px;
            display: grid; place-items: center;
            background: rgba(12, 36, 32, 0.85);
            border: 1px solid var(--border);
            border-radius: 50%;
            color: var(--sage);
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.95rem;
            line-height: 1;
            cursor: pointer;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            z-index: 45;
            transition: color 0.15s, border-color 0.15s, transform 0.2s;
        }
        .tips-reopen:hover {
            color: var(--paper);
            border-color: var(--emerald-bright);
            transform: scale(1.05);
        }
        .tips-reopen[hidden] { display: none; }

        /* ── Hover readout tooltip ───────────────────────────── */
        .hover-tooltip {
            position: fixed;
            pointer-events: none;
            z-index: 70;
            background: rgba(12, 28, 24, 0.92);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid var(--border);
            border-radius: 6px;
            padding: 5px 10px;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.75rem;
            color: var(--paper);
            white-space: nowrap;
            transition: opacity 0.08s ease-out;
        }
        .hover-tooltip.hidden { opacity: 0; }
        .hover-tooltip .hv-sep   { color: var(--sage); padding: 0 4px; }
        .hover-tooltip .hv-value { color: var(--emerald-bright); font-weight: 600; }
        .hover-tooltip .hv-unit  { color: var(--sage); margin-left: 2px; }
        .hover-tooltip .hv-mode  { color: var(--amber); margin-left: 6px; }

        /* ── Mobile drawer (hidden on desktop) ──────────────────── */
        .hamburger {
            display: none;
            position: fixed;
            top: 72px;
            left: 14px;
            z-index: 102;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            background: rgba(12, 36, 32, 0.85);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border);
            border-radius: 10px;
            color: var(--paper);
            font-size: 1.15rem;
            cursor: pointer;
            transition: background 0.15s;
        }
        .hamburger:hover { background: rgba(14, 140, 110, 0.28); }
        .sidebar-backdrop {
            display: none;
            position: fixed;
            inset: 56px 0 0 0;
            background: rgba(0, 0, 0, 0.45);
            backdrop-filter: blur(2px);
            z-index: 99;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.2s ease-out;
        }
        .sidebar-backdrop.open { opacity: 1; pointer-events: auto; }

        /* Brief amber flash under the reference-period select when a
           climatology-period change auto-resets an incompatible choice.
           Fades out via JS after a few seconds. */
        .ref-period-flash {
            margin-top: 6px;
            padding: 6px 8px;
            font-size: 0.68rem;
            line-height: 1.45;
            color: var(--amber);
            background: rgba(232, 194, 106, 0.08);
            border-left: 2px solid var(--amber);
            border-radius: 0 4px 4px 0;
            transition: opacity 0.4s;
        }
        .ref-period-flash[hidden] { display: none; }
        .ref-period-flash.is-fading { opacity: 0; }

        /* In-sidebar explanation for why panels appear inert on mobile.
           Default hidden; only surfaced inside the mobile media query below. */
        .mobile-panel-hint {
            display: none;
            font-size: 0.7rem;
            color: var(--sage);
            line-height: 1.5;
            margin-top: 10px;
            padding: 8px 10px;
            border-left: 2px solid var(--amber);
            background: rgba(232, 194, 106, 0.05);
            border-radius: 0 4px 4px 0;
        }

        /* ── Responsive ─────────────────────────────────────── */
        @media (max-width: 820px) {
            .app { flex-direction: row; }   /* keep row — sidebar becomes drawer overlay */
            .sidebar {
                position: fixed;
                top: 56px; left: 0; bottom: 0;
                width: 84vw;
                max-width: 320px;
                transform: translateX(-100%);
                transition: transform 0.25s ease-out;
                z-index: 100;
                box-shadow: 0 0 26px rgba(0, 0, 0, 0.55);
            }
            .sidebar.open { transform: translateX(0); }
            .sidebar-backdrop { display: block; }
            .hamburger { display: flex; }
            .globe-stage { width: 100%; }
            .view-toggle { top: 72px; right: 14px; }  /* below topbar, clear of hamburger */
            /* Push share-toolbar below the view-toggle row so the two
               don't stack on top of each other on phones. */
            .share-toolbar { top: 116px; right: 14px; gap: 6px; }
            .colorbar { left: 12px; right: 12px; bottom: 12px; min-width: 0; }
            /* Diagnostic panels are wider than the phone viewport — hide
               on mobile. The toggles in the sidebar still set state, but
               the visual panel won't render until the user resizes to a
               wider screen. */
            .xsection { display: none; }
            .lorenz   { display: none; }
            .tips-panel { display: none; }
            /* Explain the hidden-panel situation inside the sidebar so
               toggling a Panels checkbox doesn't look broken. */
            .mobile-panel-hint { display: block; }
            .topbar-nav { gap: 4px; }
            .topbar-nav a { padding: 5px 8px; font-size: 0.75rem; }
            /* GIF modal — let the card breathe to the viewport edges. */
            .gif-modal-card {
                min-width: 0 !important;
                max-width: calc(100vw - 24px) !important;
                width: calc(100vw - 24px);
            }
            /* Composite builder + bounds row — the lat/lon inputs are too
               wide for a 290 px sidebar in a single row. Let them wrap. */
            .ts-bounds-row { flex-wrap: wrap; }
            .ts-bounds-input { width: 50px !important; }
            /* The 5-button decomposition row gets cramped on mobile.
               Allow the segmented buttons to wrap onto a second line
               instead of overflowing the sidebar. */
            .decomp-seg { flex-wrap: wrap; }
            /* σ-anom button label was a bit wider — ensure all five
               decomp buttons share width evenly when wrapping. */
            .decomp-seg button { flex: 1 1 calc(33% - 2px); }
            /* The pick-region banner sits at top:78 on desktop; on phones
               that puts it tucked under the view-toggle row. Bump down. */
            .ts-pick-banner { top: 130px; font-size: 0.7rem; padding: 6px 12px; }
        }