:root {
            --bg: #12141a;
            --surface: #1c1f27;
            --surface-2: #252a34;
            --border: #3a4150;
            --border-soft: #2e3440;
            --text: #e8eaed;
            --text-muted: #8b93a7;
            --accent: #3d8bfd;
            --accent-dim: rgba(61, 139, 253, 0.15);
            --success: #3dd68c;
            --warning: #f0a020;
            --danger: #e85d5d;
            --toolbar-h: 40px;
            --panel-w: 260px;
            --hud-h: 32px;
            --font: 'IBM Plex Sans', system-ui, sans-serif;
            --mono: 'IBM Plex Mono', monospace;
        }

        * { box-sizing: border-box; }

        html, body {
            margin: 0;
            height: 100%;
            overflow: hidden;
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
        }

        .app {
            display: grid;
            grid-template-rows: var(--toolbar-h) 1fr var(--hud-h);
            height: 100vh;
            width: 100vw;
        }

        /* —— Toolbar —— */
        .toolbar {
            display: flex;
            align-items: center;
            gap: 0;
            padding: 0 8px;
            background: var(--surface);
            border-bottom: 1px solid var(--border-soft);
            z-index: 20;
            min-width: 0;
        }


        .brand {
            display: flex;
            align-items: center;
            gap: 6px;
            padding-right: 10px;
            margin-right: 4px;
            border-right: 1px solid var(--border-soft);
            flex-shrink: 0;
        }

        .brand-mark {
            width: 22px;
            height: 22px;
            border-radius: 5px;
            display: block;
            flex-shrink: 0;
            object-fit: contain;
        }

        .brand h1 {
            margin: 0;
            font-size: 0.7rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            white-space: nowrap;
        }
        .brand-draw { color: #ffffff; }
        .brand-measure { color: #f97316; }

        .toolbar-scroll {
            display: flex;
            align-items: center;
            gap: 2px;
            flex: 1;
            min-width: 0;
            overflow-x: auto;
            overflow-y: hidden;
            padding: 0 2px;
            scrollbar-width: none;
        }
        .toolbar-scroll::-webkit-scrollbar { display: none; }

        .tool-group {
            display: flex;
            align-items: center;
            gap: 5px;
            padding: 0 6px;
            flex-shrink: 0;
        }

        .tool-group + .tool-group {
            border-left: 1px solid var(--border-soft);
        }

        .tool-group label {
            font-size: 0.6rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            color: var(--text-muted);
            white-space: nowrap;
        }

        .tool-group select,
        .tool-group input[type="number"] {
            font-family: var(--font);
            font-size: 11px;
            padding: 3px 6px;
            height: 26px;
            border: 1px solid var(--border);
            border-radius: 4px;
            background: var(--bg);
            color: var(--text);
            outline: none;
            min-width: 0;
        }

        .tool-group select:focus,
        .tool-group input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 2px var(--accent-dim);
        }

        #quotaType { width: 112px; }
        #presetSelect { width: 104px; }
        #valoreScala { width: 62px; }
        #unita { width: 56px; }
        #quotaStep { width: 78px; }
        #elementColor {
            width: 28px;
            height: 26px;
            padding: 1px;
            border: 1px solid var(--border);
            border-radius: 4px;
            background: var(--bg);
            cursor: pointer;
        }

        .mode-seg {
            display: inline-flex;
            border: 1px solid var(--border);
            border-radius: 5px;
            overflow: hidden;
            height: 26px;
        }
        .mode-seg button {
            font-family: var(--font);
            font-size: 10px;
            font-weight: 600;
            letter-spacing: 0.02em;
            padding: 0 9px;
            border: none;
            background: var(--bg);
            color: var(--text-muted);
            cursor: pointer;
        }
        .mode-seg button + button {
            border-left: 1px solid var(--border);
        }
        .mode-seg button.active {
            background: var(--accent-dim);
            color: var(--accent);
        }
        .mode-seg button:hover:not(.active) {
            color: var(--text);
        }

        body.mode-simple .advanced-only {
            display: none !important;
        }

        .check-inline {
            display: flex;
            align-items: center;
            gap: 5px;
            cursor: pointer;
            user-select: none;
        }
        .check-inline input { accent-color: var(--accent); cursor: pointer; }
        .check-inline span {
            font-size: 0.6rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            color: var(--accent);
            white-space: nowrap;
        }
        .check-inline .loupe-icon {
            width: 16px;
            height: 16px;
            stroke: var(--text-muted);
            fill: none;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
            flex-shrink: 0;
            opacity: 0.75;
            transition: stroke 0.15s, opacity 0.15s;
        }
        .check-inline:has(#loupeToggle:checked) .loupe-icon {
            stroke: var(--accent);
            opacity: 1;
        }
        .check-inline:hover .loupe-icon {
            stroke: var(--accent);
            opacity: 1;
        }

        .toolbar-actions {
            display: flex;
            align-items: center;
            gap: 3px;
            margin-left: auto;
            padding-left: 8px;
            border-left: 1px solid var(--border-soft);
            flex-shrink: 0;
        }

        .icon-btn {
            width: 28px;
            height: 28px;
            display: grid;
            place-items: center;
            border: 1px solid var(--border);
            border-radius: 5px;
            background: var(--surface-2);
            color: var(--text);
            cursor: pointer;
            padding: 0;
            transition: background 0.12s, border-color 0.12s, color 0.12s;
        }
        .icon-btn:hover:not(:disabled) {
            background: #2f3542;
            border-color: #505868;
        }
        .icon-btn:disabled {
            opacity: 0.35;
            cursor: default;
        }
        .icon-btn svg { width: 14px; height: 14px; stroke: currentColor; fill: none; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }
        .icon-btn.danger:hover:not(:disabled) { color: #f0a0a0; border-color: rgba(232, 93, 93, 0.5); }

        .icon-btn.toggle-on {
            background: var(--accent-dim);
            border-color: rgba(61, 139, 253, 0.5);
            color: var(--accent);
        }

        .export-wrap { position: relative; }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            height: 28px;
            padding: 0 10px;
            border: 1px solid #2a8a58;
            border-radius: 5px;
            background: #1f6b45;
            color: #fff;
            font-family: var(--font);
            font-size: 0.65rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            cursor: pointer;
            transition: filter 0.12s;
        }
        .btn-primary:hover:not(:disabled) { filter: brightness(1.1); }
        .btn-primary:disabled { opacity: 0.35; cursor: default; filter: none; }
        .btn-primary svg { width: 14px; height: 14px; stroke: currentColor; fill: none; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }
        .btn-primary .caret { width: 10px; height: 10px; opacity: 0.85; }

        .export-menu {
            display: none;
            position: absolute;
            top: calc(100% + 6px);
            right: 0;
            min-width: 150px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 8px;
            box-shadow: 0 12px 28px rgba(0,0,0,0.45);
            padding: 4px;
            z-index: 40;
        }
        .export-menu.open { display: block; }
        .export-menu-sep {
            height: 1px;
            margin: 4px 8px;
            background: var(--border-soft);
        }
        .export-menu button {
            display: block;
            width: 100%;
            text-align: left;
            padding: 9px 12px;
            border: none;
            border-radius: 5px;
            background: transparent;
            color: var(--text);
            font-family: var(--font);
            font-size: 0.8rem;
            font-weight: 500;
            cursor: pointer;
        }
        .export-menu button:hover { background: var(--surface-2); }
        .export-menu button.export-drawmeasure {
            color: var(--accent);
            font-weight: 700;
            letter-spacing: 0.02em;
        }
        .export-menu button.export-drawmeasure:hover {
            background: var(--accent-dim);
            color: #6babff;
        }
        .export-menu button.export-drawmeasure-open {
            font-weight: 600;
            opacity: 0.92;
        }
        .export-menu button:disabled {
            opacity: 0.35;
            cursor: default;
        }
        .export-menu button:disabled:hover {
            background: transparent;
            color: inherit;
        }
        .export-menu button.export-drawmeasure:disabled:hover {
            background: transparent;
            color: var(--accent);
        }

        .help-wrap { position: relative; }

        .help-popover {
            display: none;
            position: absolute;
            top: calc(100% + 6px);
            right: 0;
            width: 280px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 8px;
            box-shadow: 0 12px 28px rgba(0,0,0,0.45);
            padding: 12px 14px;
            z-index: 40;
        }
        .help-popover.open { display: block; }
        .help-popover h3 {
            margin: 0 0 8px;
            font-size: 0.7rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--text-muted);
        }
        .help-popover dl {
            margin: 0;
            display: grid;
            grid-template-columns: auto 1fr;
            gap: 6px 12px;
            font-size: 0.75rem;
        }
        .help-popover dt {
            font-family: var(--mono);
            font-size: 0.68rem;
            color: var(--accent);
            white-space: nowrap;
        }
        .help-popover dd {
            margin: 0;
            color: var(--text-muted);
        }

        /* —— Main stage —— */
        .stage {
            display: grid;
            grid-template-columns: 1fr auto;
            min-height: 0;
            overflow: hidden;
        }

        .workspace {
            position: relative;
            min-width: 0;
            min-height: 0;
            background:
                linear-gradient(45deg, #1a1d24 25%, transparent 25%),
                linear-gradient(-45deg, #1a1d24 25%, transparent 25%),
                linear-gradient(45deg, transparent 75%, #1a1d24 75%),
                linear-gradient(-45deg, transparent 75%, #1a1d24 75%);
            background-size: 18px 18px;
            background-position: 0 0, 0 9px, 9px -9px, -9px 0;
            background-color: #12151b;
            overflow: hidden;
            cursor: crosshair;
            touch-action: none;
            -webkit-user-select: none;
            user-select: none;
        }
        .workspace.has-image {
            background: #0c0e12;
            background-image: none;
        }

        canvas {
            position: absolute;
            top: 0;
            left: 0;
            transform-origin: 0 0;
        }

        #loupeCanvas {
            position: absolute;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            border: 2px solid var(--accent);
            box-shadow:
                0 6px 24px rgba(0, 0, 0, 0.55),
                inset 0 0 0 1px rgba(255, 255, 255, 0.12);
            pointer-events: none;
            display: none;
            z-index: 12;
            background: #0c0e12;
            transform: none !important;
            transform-origin: center center;
        }

        .drop-zone {
            position: absolute;
            inset: 0;
            z-index: 5;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 10px;
            border: 2px dashed var(--border);
            border-radius: 10px;
            margin: 16px;
            background: rgba(18, 20, 26, 0.75);
            backdrop-filter: blur(4px);
            cursor: pointer;
            transition: border-color 0.2s, background 0.2s;
            text-align: center;
            padding: 32px;
        }
        .drop-zone:hover,
        .drop-zone.dragover {
            border-color: var(--accent);
            background: rgba(61, 139, 253, 0.08);
        }
        .drop-zone.hidden { display: none; }
        .drop-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: var(--accent-dim);
            border: 1px solid rgba(61, 139, 253, 0.35);
            display: grid;
            place-items: center;
            color: var(--accent);
            margin-bottom: 4px;
        }
        .drop-icon svg { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }
        .drop-title { margin: 0; font-weight: 600; font-size: 0.95rem; }
        .drop-hint { margin: 0; font-size: 0.8rem; color: var(--text-muted); max-width: 320px; line-height: 1.45; }
        .drop-formats {
            margin-top: 6px;
            font-family: var(--mono);
            font-size: 0.65rem;
            color: var(--text-muted);
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }

        /* —— Side panel —— */
        .side-panel {
            width: 0;
            overflow: hidden;
            background: var(--surface);
            border-left: 1px solid transparent;
            transition: width 0.18s ease;
        }
        .side-panel.open {
            width: var(--panel-w);
            border-left-color: var(--border-soft);
            overflow-y: auto;
        }

        .panel-inner {
            width: var(--panel-w);
            padding: 14px 14px 20px;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .panel-title {
            margin: 0;
            font-size: 0.65rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--text-muted);
        }

        .panel-field {
            display: flex;
            flex-direction: column;
            gap: 5px;
        }
        .panel-field label {
            font-size: 0.62rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            color: var(--text-muted);
        }
        .panel-field select,
        .panel-field input[type="number"],
        .panel-field input[type="range"] {
            width: 100%;
            accent-color: var(--accent);
        }
        .shadow-controls {
            margin: 0 0 8px;
            padding: 8px 10px 4px;
            border: 1px solid var(--border-soft);
            border-radius: 8px;
            background: rgba(0, 0, 0, 0.18);
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .shadow-controls[hidden] { display: none !important; }
        .shadow-controls .panel-field { margin: 0 0 6px; }

        .panel-field input[type="number"] {
            font-family: var(--font);
            font-size: 12px;
            padding: 7px 8px;
            border: 1px solid var(--border);
            border-radius: 5px;
            background: var(--bg);
            color: var(--text);
            outline: none;
        }
        .panel-field input[type="number"]:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 2px var(--accent-dim);
        }
        .panel-field select {
            font-family: var(--font);
            font-size: 12px;
            padding: 7px 8px;
            border: 1px solid var(--border);
            border-radius: 5px;
            background: var(--bg);
            color: var(--text);
            outline: none;
        }
        .panel-field select:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 2px var(--accent-dim);
        }
        .panel-field input[type="range"] {
            accent-color: var(--accent);
            cursor: pointer;
        }
        .range-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .range-val {
            font-family: var(--mono);
            font-size: 0.7rem;
            color: var(--text);
        }

        .scope-tag {
            display: inline-block;
            margin-left: 4px;
            padding: 1px 6px;
            border-radius: 4px;
            font-size: 0.58rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            color: var(--text-muted);
            background: var(--bg);
            border: 1px solid var(--border-soft);
            vertical-align: middle;
        }
        .scope-tag.selection {
            color: var(--accent);
            background: var(--accent-dim);
            border-color: rgba(61, 139, 253, 0.4);
        }

        .panel-divider {
            height: 1px;
            background: var(--border-soft);
            margin: 4px 0 2px;
        }

        .panel-actions {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .panel-btn {
            font-family: var(--font);
            font-size: 0.72rem;
            font-weight: 600;
            padding: 8px 10px;
            border-radius: 6px;
            border: 1px solid var(--border);
            background: var(--surface-2);
            color: var(--text);
            cursor: pointer;
            text-align: left;
        }
        .panel-btn:hover { border-color: var(--accent); color: var(--accent); }
        .panel-btn.primary {
            background: var(--accent-dim);
            border-color: rgba(61, 139, 253, 0.45);
            color: var(--accent);
        }
        .panel-btn:disabled {
            opacity: 0.4;
            cursor: default;
        }

        .panel-row-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 8px;
        }

        .persp-status {
            font-family: var(--mono);
            font-size: 0.65rem;
            color: var(--warning);
            line-height: 1.35;
        }
        .persp-status.ok { color: var(--success); }
        .persp-status.active { color: var(--accent); }

        .hud-value.persp { color: #7eb6ff; }

        /* —— HUD —— */
        .hud {
            display: flex;
            align-items: center;
            gap: 0;
            padding: 0 12px;
            background: var(--surface);
            border-top: 1px solid var(--border-soft);
            font-family: var(--mono);
            font-size: 11px;
            color: var(--text-muted);
            z-index: 20;
            min-width: 0;
            position: relative;
        }

        .hud-item {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 0 12px;
            height: 100%;
            white-space: nowrap;
        }
        .hud-item + .hud-item {
            border-left: 1px solid var(--border-soft);
        }
        .hud-label {
            text-transform: uppercase;
            letter-spacing: 0.04em;
            font-size: 9px;
            opacity: 0.7;
        }
        .hud-value { color: var(--text); }
        .hud-value.warn { color: var(--warning); }
        .hud-value.ok { color: var(--success); }
        .hud-value.accent { color: var(--accent); }
        .hud-spacer { flex: 1; }
        .hud-hint {
            font-family: var(--font);
            font-size: 0.68rem;
            color: var(--text-muted);
            opacity: 0.75;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            margin-right: 12px;
        }
        .hud-credit {
            font-family: var(--font);
            font-size: 0.65rem;
            color: var(--text-muted);
            opacity: 0.55;
            white-space: nowrap;
            flex-shrink: 0;
            letter-spacing: 0.02em;
        }
        .hud-credit-center {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            pointer-events: none;
        }
        .hud-visits {
            margin-left: auto;
            opacity: 0.4;
            margin-right: 14px;
        }
        .hud-credit-author {
            opacity: 0.4;
        }

        #misuraGroup.editing {
            background: var(--accent-dim);
            border-radius: 6px;
            padding: 2px 6px;
            margin: 0 -2px;
        }
        #misuraGroup.editing #misuraLabel {
            color: var(--accent);
        }

        @media (max-width: 900px) {
            .brand h1 { display: none; }
            .hud-hint { display: none; }
            #quotaType { width: 110px; }
        }
        @media (max-width: 640px) {
            :root {
                --toolbar-h: 44px;
                --hud-h: 36px;
            }
            .icon-btn {
                width: 40px;
                height: 40px;
            }
            .btn-primary {
                height: 40px;
                padding: 0 14px;
            }
            .tool-group select,
            .tool-group input[type="number"] {
                height: 36px;
                font-size: 14px;
            }
            .mode-seg {
                height: 36px;
            }
            .mode-seg button {
                padding: 0 14px;
                font-size: 12px;
            }
            .hud-visits { display: none; }
            .drop-zone {
                margin: 10px;
                padding: 20px;
            }
            .side-panel.open {
                position: absolute;
                right: 0;
                top: var(--toolbar-h);
                bottom: var(--hud-h);
                z-index: 25;
                box-shadow: -8px 0 24px rgba(0,0,0,0.4);
                width: min(var(--panel-w), 92vw);
            }
            .stage { position: relative; }
        }
        @media (pointer: coarse) {
            .workspace { cursor: default; }
            .check-inline .loupe-icon {
                width: 20px;
                height: 20px;
            }
        }

        /* —— Quick measure overlay —— */
        .measure-overlay {
            position: fixed;
            inset: 0;
            z-index: 80;
            display: grid;
            place-items: center;
            padding: 20px;
        }
        .measure-overlay[hidden] { display: none !important; }
        .measure-overlay-backdrop {
            position: absolute;
            inset: 0;
            background: rgba(8, 10, 14, 0.62);
            backdrop-filter: blur(2px);
        }
        .measure-overlay-card {
            position: relative;
            width: min(420px, 100%);
            padding: 22px 22px 18px;
            border: 1px solid var(--border);
            border-radius: 14px;
            background: var(--surface);
            box-shadow: 0 18px 48px rgba(0, 0, 0, 0.45);
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .measure-overlay-title {
            margin: 0;
            font-size: 0.72rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--text-muted);
        }
        .measure-overlay-row {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        #measureOverlayValue {
            width: 100%;
            height: 64px;
            padding: 0 16px;
            border: 1px solid var(--border);
            border-radius: 10px;
            background: var(--bg);
            color: var(--text);
            font-family: var(--mono);
            font-size: 2rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            text-align: center;
            outline: none;
        }
        #measureOverlayValue:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px var(--accent-dim);
        }
        .measure-overlay-units {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 8px;
        }
        .measure-unit-btn {
            height: 40px;
            border: 1px solid var(--border);
            border-radius: 8px;
            background: var(--surface-2);
            color: var(--text-muted);
            font-family: var(--font);
            font-size: 0.85rem;
            font-weight: 600;
            cursor: pointer;
        }
        .measure-unit-btn:hover {
            color: var(--text);
            border-color: #505868;
        }
        .measure-unit-btn.active {
            background: var(--accent-dim);
            border-color: rgba(61, 139, 253, 0.55);
            color: var(--accent);
        }
        .measure-overlay-actions {
            display: flex;
            gap: 10px;
            align-items: stretch;
        }
        .measure-overlay-done {
            flex: 1;
            height: 44px;
            border: 1px solid #2a8a58;
            border-radius: 8px;
            background: #1f6b45;
            color: #fff;
            font-family: var(--font);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            cursor: pointer;
        }
        .measure-overlay-done:hover { filter: brightness(1.08); }
        .measure-overlay-delete {
            flex: 0 0 auto;
            min-width: 104px;
            height: 44px;
            padding: 0 14px;
            border: 1px solid rgba(232, 93, 93, 0.45);
            border-radius: 8px;
            background: rgba(232, 93, 93, 0.12);
            color: #f0a0a0;
            font-family: var(--font);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            cursor: pointer;
        }
        .measure-overlay-delete:hover {
            background: rgba(232, 93, 93, 0.22);
            border-color: rgba(232, 93, 93, 0.7);
        }

        /* —— Selection action bar —— */
        .selection-bar {
            position: absolute;
            left: 50%;
            bottom: 14px;
            transform: translateX(-50%);
            z-index: 28;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 10px;
            border-radius: 12px;
            border: 1px solid rgba(61, 139, 253, 0.45);
            background: rgba(18, 22, 30, 0.94);
            box-shadow: 0 10px 28px rgba(0, 0, 0, 0.4);
            max-width: calc(100% - 24px);
        }
        .selection-bar[hidden] { display: none !important; }
        .selection-bar-label {
            font-size: 0.72rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            color: var(--accent);
            white-space: nowrap;
            padding: 0 4px 0 2px;
        }
        .selection-bar-btn {
            height: 36px;
            padding: 0 14px;
            border: 1px solid var(--border);
            border-radius: 8px;
            background: var(--surface-2);
            color: var(--text);
            font-family: var(--font);
            font-size: 0.8rem;
            font-weight: 600;
            cursor: pointer;
            white-space: nowrap;
        }
        .selection-bar-btn:hover {
            border-color: #505868;
            background: #2f3542;
        }
        .selection-bar-btn.danger {
            border-color: rgba(232, 93, 93, 0.45);
            background: rgba(232, 93, 93, 0.14);
            color: #f0a0a0;
        }
        .selection-bar-btn.danger:hover {
            background: rgba(232, 93, 93, 0.26);
            border-color: rgba(232, 93, 93, 0.7);
        }
        .selection-bar-btn.ghost {
            background: transparent;
            color: var(--text-muted);
        }
        .icon-btn.danger.active-delete:not(:disabled) {
            color: #f0a0a0;
            border-color: rgba(232, 93, 93, 0.55);
            background: rgba(232, 93, 93, 0.14);
        }

        @media (max-width: 640px) {
            #measureOverlayValue { height: 56px; font-size: 1.7rem; }
            .measure-unit-btn { height: 44px; }
            .measure-overlay-done,
            .measure-overlay-delete { height: 48px; }
            .selection-bar {
                bottom: 10px;
                gap: 6px;
                padding: 8px;
            }
            .selection-bar-label { display: none; }
            .selection-bar-btn {
                height: 42px;
                padding: 0 16px;
                font-size: 0.85rem;
            }
        }

        /* —— Commit feedback toast —— */
        .commit-toast {
            position: absolute;
            left: 50%;
            top: 18%;
            transform: translate(-50%, -8px);
            z-index: 30;
            padding: 10px 16px;
            border-radius: 10px;
            border: 1px solid rgba(61, 139, 253, 0.45);
            background: rgba(18, 22, 30, 0.92);
            color: #e8eaed;
            font-family: var(--mono);
            font-size: 1.05rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            box-shadow: 0 10px 28px rgba(0, 0, 0, 0.4);
            pointer-events: none;
            opacity: 0;
            transition: opacity 0.18s ease, transform 0.18s ease;
        }
        .commit-toast.show {
            opacity: 1;
            transform: translate(-50%, 0);
        }
        .commit-toast[hidden] { display: none !important; }
        .commit-toast.show[hidden] { display: block !important; }