/* ============ Reset & Base ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg: #0f1117;
    --bg-panel: #1a1d27;
    --bg-hover: #252836;
    --border: #2a2d3a;
    --text: #e4e4e7;
    --text-muted: #9ca3af;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --accent-glow: rgba(59, 130, 246, 0.15);
    --wall-color: #ef4444;
    --room-color: #22c55e;
    --door-color: #f59e0b;
    --window-color: #06b6d4;
    --corridor-color: #eab308;
    --label-color: #a855f7;
    --danger: #dc2626;
    --success: #22c55e;
    --sidebar-width: 340px;
    --header-height: 56px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    height: 100vh;
    overflow: hidden;
}

/* ============ Header ============ */
#header {
    height: var(--header-height);
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-left svg { color: var(--accent); }
.header-left .header-logo,
img.header-logo {
    height: 37px !important;
    width: auto !important;
    max-height: 37px !important;
    max-width: 106px !important;
    display: block;
    object-fit: contain;
    flex: 0 0 auto;
}
.header-left h1 { font-size: 18px; font-weight: 600; }

.status-badge {
    font-size: 12px;
    padding: 4px 12px;
    border-radius: 12px;
    background: var(--bg-hover);
    color: var(--text-muted);
}

.status-badge.active { background: #166534; color: #86efac; }
.hidden { display: none !important; }

/* ============ Main Layout ============ */
#main {
    display: flex;
    height: calc(100vh - var(--header-height));
}

/* ============ Sidebar ============ */
#sidebar {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    background: var(--bg-panel);
    border-right: 1px solid var(--border);
    overflow-y: auto;
    padding: 8px 0;
    display: flex;
    flex-direction: column;
}

#sidebar::-webkit-scrollbar { width: 6px; }
#sidebar::-webkit-scrollbar-track { background: transparent; }
#sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ============ Wizard Step ============ */
.wizard-step {
    border-bottom: 1px solid var(--border);
}

.wizard-step:last-child {
    border-bottom: none;
}

.step-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    cursor: pointer;
    transition: background 0.2s;
    user-select: none;
}

.step-header:hover {
    background: var(--bg-hover);
}

.step-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}

.step-number {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--bg-hover);
    border: 2px solid var(--border);
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    position: relative;
    z-index: 1;
}

.wizard-step.active .step-number {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
    box-shadow: 0 0 12px var(--accent-glow);
}

.wizard-step.completed .step-number {
    background: var(--success);
    border-color: var(--success);
    color: #fff;
}

.wizard-step.completed .step-number::after {
    content: '';
    display: block;
    width: 8px;
    height: 4px;
    border-left: 2px solid #fff;
    border-bottom: 2px solid #fff;
    transform: rotate(-45deg);
    margin-top: -2px;
}

.wizard-step.completed .step-number {
    font-size: 0;
}

.step-connector {
    width: 2px;
    height: 20px;
    background: var(--border);
    margin-top: 4px;
    transition: background 0.3s;
}

.wizard-step.completed .step-connector {
    background: var(--success);
}

.step-title {
    flex: 1;
}

.step-title h2 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    margin: 0;
    text-transform: none;
    letter-spacing: 0;
}

.wizard-step:not(.active):not(.completed) .step-title h2 {
    color: var(--text-muted);
}

.step-subtitle {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

.step-chevron {
    color: var(--text-muted);
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.wizard-step.active .step-chevron {
    transform: rotate(180deg);
    color: var(--accent);
}

/* Step content with CSS Grid animation */
.step-content {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.35s ease;
}

.wizard-step.active .step-content {
    grid-template-rows: 1fr;
}

.step-body {
    overflow: hidden;
    padding: 0 16px;
    transition: padding 0.35s ease;
}

.wizard-step.active .step-body {
    padding: 0 16px 16px;
}

/* ============ Upload Zone ============ */
#drop-zone {
    border: 2px dashed var(--border);
    border-radius: 8px;
    padding: 28px 16px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
    margin-bottom: 12px;
    position: relative;
}

#drop-zone:hover, #drop-zone.dragover {
    border-color: var(--accent);
    background: rgba(59, 130, 246, 0.05);
}

#drop-zone p { margin-top: 8px; font-size: 14px; }
#drop-zone span { font-size: 12px; color: var(--text-muted); }
#drop-zone input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }

.file-info {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    background: var(--bg-hover);
    border-radius: 8px;
    margin-bottom: 12px;
    font-size: 13px;
}

.file-info svg { color: var(--accent); flex-shrink: 0; }
.file-info .text-muted { color: var(--text-muted); margin-left: auto; }

/* ============ Geocoder ============ */
#geocoder-container {
    margin-bottom: 12px;
}

#geocoder-container .mapboxgl-ctrl-geocoder {
    width: 100%;
    max-width: none;
    background: var(--bg-hover);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    box-shadow: none;
}

#geocoder-container .mapboxgl-ctrl-geocoder input {
    color: var(--text);
    font-size: 13px;
}

#geocoder-container .mapboxgl-ctrl-geocoder input::placeholder {
    color: var(--text-muted);
}

#geocoder-container .mapboxgl-ctrl-geocoder .suggestions {
    background: var(--bg-panel);
    border: 1px solid var(--border);
}

#geocoder-container .mapboxgl-ctrl-geocoder .suggestions li a {
    color: var(--text);
}

#geocoder-container .mapboxgl-ctrl-geocoder .suggestions li a:hover {
    background: var(--bg-hover);
}

/* ============ Controls ============ */
.control-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.control-row label {
    font-size: 13px;
    color: var(--text-muted);
    min-width: 80px;
}

.control-row input[type="range"] { flex: 1; accent-color: var(--accent); }
.control-row input[type="number"],
.control-row input[type="text"] {
    flex: 1;
    background: var(--bg-hover);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    padding: 6px 10px;
    font-size: 13px;
}

.control-row input[type="number"]:focus,
.control-row input[type="text"]:focus {
    outline: none;
    border-color: var(--accent);
}

#confidence-value, #opacity-value {
    font-size: 13px;
    font-weight: 600;
    min-width: 32px;
    text-align: right;
}

select {
    flex: 1;
    background: var(--bg-hover);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    padding: 6px 10px;
    font-size: 13px;
}

select:focus { outline: none; border-color: var(--accent); }

/* ============ Buttons ============ */
.btn {
    width: 100%;
    padding: 10px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, opacity 0.2s, transform 0.1s;
    margin-top: 4px;
}

.btn:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); }
.btn-primary:active:not(:disabled) { transform: scale(0.98); }

.btn-secondary {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border);
    margin-top: 8px;
}
.btn-secondary:hover:not(:disabled) { background: var(--bg-hover); color: var(--text); }

/* ============ Sub Panels ============ */
.sub-panel {
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.sub-panel:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.sub-panel h3 {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.layers-title {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin: 16px 0 10px;
}

/* ============ Layers ============ */
.layer-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 0;
}

.layer-toggle input[type="checkbox"] { accent-color: var(--accent); }
.layer-toggle label {
    flex: 1;
    font-size: 13px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
}

.color-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
}


.count-badge {
    font-size: 11px;
    background: var(--bg-hover);
    padding: 2px 8px;
    border-radius: 10px;
    color: var(--text-muted);
}

/* ============ Draw Panel ============ */
.draw-type-selector {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.draw-type-selector label { font-size: 13px; color: var(--text-muted); }

/* Wall drawing tool row */
.wall-tool-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 8px 0;
}

.btn-wall {
    width: auto;
    padding: 6px 14px;
    font-size: 13px;
    font-weight: 600;
    border: 1px solid var(--accent);
    border-radius: 6px;
    background: transparent;
    color: var(--accent);
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.2s, color 0.2s;
    margin-top: 0;
}

.btn-wall:hover {
    background: var(--accent);
    color: #fff;
}

.thickness-control {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 1;
    min-width: 0;
}

.thickness-control label {
    font-size: 12px;
    color: var(--text-muted);
    white-space: nowrap;
}

.thickness-control input[type="range"] {
    flex: 1;
    min-width: 50px;
}

.thickness-control span {
    font-size: 12px;
    color: var(--text-muted);
    white-space: nowrap;
    min-width: 36px;
    text-align: right;
}

.hint {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.5;
}

/* ============ Labels List ============ */
#labels-list {
    margin-top: 8px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.label-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 10px;
    background: var(--bg-hover);
    border-radius: 6px;
    font-size: 13px;
}

.label-item button {
    background: none;
    border: none;
    color: var(--danger);
    cursor: pointer;
    font-size: 16px;
    padding: 0 4px;
}

/* ============ Map ============ */
#map-container {
    flex: 1;
    position: relative;
}

#map {
    width: 100%;
    height: 100%;
}

/* Dark Mapbox overrides */
.mapboxgl-ctrl-group {
    background: var(--bg-panel) !important;
    border-color: var(--border) !important;
}

.mapboxgl-ctrl-group button {
    background-color: var(--bg-panel) !important;
    border-color: var(--border) !important;
}

.mapboxgl-ctrl-group button + button {
    border-top-color: var(--border) !important;
}

.mapboxgl-ctrl-group button:hover {
    background-color: var(--bg-hover) !important;
}

.mapboxgl-ctrl-group button .mapboxgl-ctrl-icon {
    filter: invert(1);
}

.mapboxgl-ctrl-attrib {
    background: rgba(15, 17, 23, 0.7) !important;
    color: var(--text-muted) !important;
}

.mapboxgl-ctrl-attrib a {
    color: var(--text-muted) !important;
}

/* Draw control dark overrides */
.mapbox-gl-draw_ctrl-draw-btn {
    background-color: var(--bg-panel) !important;
    border-color: var(--border) !important;
    filter: invert(1);
}

.mapbox-gl-draw_ctrl-draw-btn:hover {
    background-color: var(--bg-hover) !important;
}

/* ============ Transform Handles ============ */
.handle-overlay {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 5;
}

.handle-overlay line,
.handle-overlay rect {
    pointer-events: none;
}

.handle-corner {
    width: 14px;
    height: 14px;
    background: #fff;
    border: 2px solid var(--accent);
    border-radius: 2px;
    cursor: nwse-resize;
    position: absolute;
    transform: translate(-50%, -50%);
    z-index: 10;
    box-shadow: 0 1px 4px rgba(0,0,0,0.3);
    pointer-events: auto;
}

.handle-corner[data-pos="tr"],
.handle-corner[data-pos="bl"] {
    cursor: nesw-resize;
}

.handle-edge {
    width: 10px;
    height: 10px;
    background: #fff;
    border: 2px solid var(--accent);
    border-radius: 1px;
    position: absolute;
    transform: translate(-50%, -50%);
    z-index: 10;
    box-shadow: 0 1px 3px rgba(0,0,0,0.3);
    pointer-events: auto;
}

.handle-edge[data-pos="t"],
.handle-edge[data-pos="b"] {
    cursor: ns-resize;
}

.handle-edge[data-pos="l"],
.handle-edge[data-pos="r"] {
    cursor: ew-resize;
}

.handle-rotate {
    width: 20px;
    height: 20px;
    background: #fff;
    border: 2px solid var(--accent);
    border-radius: 50%;
    cursor: grab;
    position: absolute;
    transform: translate(-50%, -50%);
    z-index: 10;
    box-shadow: 0 1px 4px rgba(0,0,0,0.3);
    pointer-events: auto;
}

.handle-rotate:active {
    cursor: grabbing;
}

/* Image drag cursor on the image overlay area */
.image-dragging {
    cursor: move !important;
}

/* ============ Loading Overlay ============ */
#loading-overlay {
    position: absolute;
    inset: 0;
    background: rgba(15, 17, 23, 0.85);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

#loading-overlay p {
    margin-top: 16px;
    font-size: 14px;
    color: var(--text-muted);
}

/* ============ Popup ============ */
.mapboxgl-popup-content {
    background: var(--bg-panel) !important;
    color: var(--text) !important;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.mapboxgl-popup-tip {
    border-top-color: var(--bg-panel) !important;
}

.mapboxgl-popup-close-button {
    color: var(--text-muted) !important;
    font-size: 18px;
}

.detection-popup {
    min-width: 160px;
}

.detection-popup h4 {
    margin-bottom: 6px;
    font-size: 14px;
}

.detection-popup p {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.detection-popup .popup-actions {
    display: flex;
    gap: 6px;
    margin-top: 8px;
}

.detection-popup .popup-actions button {
    padding: 4px 10px;
    border: none;
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
}

.popup-btn-label {
    background: #8b5cf6;
    color: #fff;
}

.popup-btn-edit {
    background: #3b82f6;
    color: #fff;
}

.popup-btn-delete {
    background: #dc2626;
    color: #fff;
}

.popup-reclassify {
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--border);
}

.popup-reclassify select {
    width: 100%;
    padding: 4px 8px;
    font-size: 12px;
    background: var(--bg-hover);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
}

/* ============ Label Markers on Map ============ */
.map-label-marker {
    background: rgba(168, 85, 247, 0.85);
    color: #fff;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
    pointer-events: auto;
    cursor: pointer;
}

/* ============ Layer Settings ============ */
.layer-settings-btn {
    position: absolute;
    top: 10px;
    left: 10px;
    z-index: 5;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-muted);
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
}

.layer-settings-btn:hover {
    background: var(--bg-hover);
    color: var(--text);
}

.layer-settings-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 2000;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 60px;
}

.layer-settings-dialog {
    width: 420px;
    max-height: calc(100vh - 120px);
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow-y: auto;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.layer-settings-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}

.layer-settings-header h2 {
    font-size: 16px;
    font-weight: 600;
}

.layer-settings-header button {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 22px;
    cursor: pointer;
    padding: 0 4px;
}

.layer-settings-header button:hover {
    color: var(--text);
}

.layer-settings-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    border-bottom: 1px solid var(--border);
}

.layer-settings-name {
    flex: 1;
    font-size: 14px;
}

.layer-settings-row .lock-icon {
    color: var(--text-muted);
    font-size: 14px;
}

.layer-settings-row .delete-btn {
    background: var(--danger);
    color: #fff;
    border: none;
    border-radius: 4px;
    padding: 4px 10px;
    font-size: 12px;
    cursor: pointer;
    transition: opacity 0.2s;
}

.layer-settings-row .delete-btn:hover {
    opacity: 0.85;
}

.layer-settings-basemap {
    padding: 16px 20px;
    border-top: 1px solid var(--border);
}

.layer-settings-basemap h3 {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.layer-settings-basemap .hint {
    margin: 0 0 10px;
}

.layer-settings-basemap code {
    background: var(--bg-hover);
    padding: 1px 5px;
    border-radius: 4px;
    font-size: 11px;
}

.basemap-input-row {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
}

.basemap-input-row input[type="text"] {
    flex: 1;
    background: var(--bg-hover);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    padding: 8px 10px;
    font-size: 13px;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.basemap-input-row input[type="text"]:focus {
    outline: none;
    border-color: var(--accent);
}

.basemap-input-row .btn {
    flex: 0 0 auto;
    padding: 8px 14px;
}

.basemap-status {
    font-size: 12px;
    min-height: 16px;
    margin-bottom: 8px;
    color: var(--text-muted);
    word-break: break-all;
}

.basemap-status.ok    { color: #22c55e; }
.basemap-status.info  { color: var(--text-muted); }
.basemap-status.warn  { color: #eab308; }
.basemap-status.error { color: #ef4444; }

.basemap-reset-link {
    background: none;
    border: none;
    padding: 0;
    color: var(--text-muted);
    font-size: 12px;
    cursor: pointer;
    text-decoration: underline;
}

.basemap-reset-link:hover {
    color: var(--text);
}

.layer-settings-add {
    padding: 16px 20px;
    border-top: 1px solid var(--border);
}

.layer-settings-add h3 {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.layer-settings-add input[type="text"],
.layer-settings-add input:not([type="color"]) {
    width: 100%;
    background: var(--bg-hover);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    padding: 8px 10px;
    font-size: 13px;
    margin-bottom: 8px;
}

.layer-settings-add input:focus {
    outline: none;
    border-color: var(--accent);
}

.color-inputs {
    display: flex;
    gap: 16px;
    margin: 8px 0 12px;
}

.color-inputs label {
    font-size: 13px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 8px;
}

.color-inputs input[type="color"] {
    width: 32px;
    height: 28px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg-hover);
    cursor: pointer;
}

/* ============================================================
   Tool-Centric Redesign — Glass UI
   ============================================================ */

:root {
    --glass-bg: rgba(20, 22, 32, 0.62);
    --glass-bg-strong: rgba(28, 30, 42, 0.78);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 10px 30px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.06);
    --ai-accent: #a855f7;
    --ai-accent-hover: #9333ea;
    --ai-glow: rgba(168, 85, 247, 0.35);
}

.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(18px) saturate(140%);
    -webkit-backdrop-filter: blur(18px) saturate(140%);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

.visually-hidden {
    position: absolute !important;
    height: 1px; width: 1px;
    overflow: hidden; clip: rect(1px, 1px, 1px, 1px);
    white-space: nowrap;
}

/* ============ Header tweaks ============ */
.header-center { flex: 1; max-width: 420px; margin: 0 24px; }
#geocoder-container { width: 100%; }
#geocoder-container .mapboxgl-ctrl-geocoder {
    background: var(--bg-hover);
    border: 1px solid var(--border);
    box-shadow: none;
    width: 100%;
    max-width: 100%;
    min-width: 0;
}
#geocoder-container .mapboxgl-ctrl-geocoder input { color: var(--text); }
#geocoder-container .mapboxgl-ctrl-geocoder--icon { fill: var(--text-muted); }

/* ============ Sidebar refresh ============ */
#sidebar { padding: 0; background: var(--bg-panel); }

.sidebar-tabs {
    display: flex;
    border-bottom: 1px solid var(--border);
    padding: 8px 8px 0;
    gap: 4px;
}

.sidebar-tab {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 10px 8px;
    font-size: 13px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    cursor: pointer;
    border-radius: 8px 8px 0 0;
    border-bottom: 2px solid transparent;
    transition: color 0.15s, background 0.15s, border-color 0.15s;
}
.sidebar-tab:hover { color: var(--text); background: rgba(255,255,255,0.03); }
.sidebar-tab.active {
    color: var(--text);
    border-bottom-color: var(--accent);
    background: rgba(59, 130, 246, 0.06);
}

.sidebar-tab-panel { display: none; padding: 14px 16px; overflow-y: auto; }
.sidebar-tab-panel.active { display: block; }
.sidebar-tab-panel::-webkit-scrollbar { width: 6px; }
.sidebar-tab-panel::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

.sidebar-section { margin-bottom: 18px; }
.section-title {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    margin-bottom: 10px;
}

/* Image-as-tool row */
.image-tool-row {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.image-tool-row .img-empty,
.image-tool-row .img-loaded {
    background: var(--bg-hover);
    border: 1px dashed var(--border);
    border-radius: 8px;
    padding: 12px;
    font-size: 13px;
    color: var(--text-muted);
    text-align: center;
}
.image-tool-row .img-loaded {
    border-style: solid;
    text-align: left;
    color: var(--text);
}
.image-tool-row .img-loaded .filename {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 8px;
    word-break: break-all;
}
.image-tool-row .img-loaded-actions {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}
.img-action-btn {
    flex: 1;
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 12px;
    cursor: pointer;
    transition: background 0.15s;
}
.img-action-btn:hover { background: var(--bg-hover); }
.img-action-btn.danger:hover { background: rgba(220, 38, 38, 0.18); border-color: var(--danger); }

/* Inspector */
.inspector-empty {
    color: var(--text-muted);
    font-size: 13px;
    line-height: 1.5;
    padding: 12px;
    background: var(--bg-hover);
    border-radius: 8px;
}
.inspector-feature {
    background: var(--bg-hover);
    border-radius: 8px;
    padding: 12px;
}
.inspector-feature h4 {
    font-size: 14px;
    margin-bottom: 6px;
    color: var(--text);
}
.inspector-feature .meta {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 4px;
}
.inspector-feature .actions {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-top: 10px;
}

/* Export tab */
.export-radio-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.export-radio-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text);
    font-size: 13px;
    cursor: pointer;
}
.hint-inline { color: var(--text-muted); font-size: 11px; }

/* ============ Drawing Toolbar (top-center, glass pill) ============ */
.drawing-toolbar {
    position: absolute;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px;
    border-radius: 14px;
    z-index: 5;
}
#toolbar-tools {
    display: flex;
    align-items: center;
    gap: 4px;
}
.tool-btn {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-muted);
    padding: 7px 11px;
    border-radius: 9px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: background 0.15s, color 0.15s, border-color 0.15s, box-shadow 0.15s;
}
.tool-btn:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text);
}
.tool-btn.active {
    background: rgba(59, 130, 246, 0.18);
    color: #fff;
    border-color: rgba(59, 130, 246, 0.35);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}
.tool-btn .color-dot {
    width: 9px; height: 9px; border-radius: 50%;
    box-shadow: 0 0 0 2px rgba(0,0,0,0.18);
}
.tool-divider {
    width: 1px;
    height: 22px;
    background: var(--glass-border);
    margin: 0 4px;
}

/* ============ Top-right map corner stack ============ */
.map-corner-stack {
    position: absolute;
    z-index: 5;
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: flex-end;
}
.map-corner-stack.top-right { top: 16px; right: 16px; }

.icon-btn {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    border: 1px solid var(--glass-border);
    color: var(--text);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s, transform 0.1s;
}
.icon-btn:hover { background: rgba(255,255,255,0.06); }
.icon-btn:active { transform: scale(0.96); }

/* AI button — distinct violet accent */
.ai-btn {
    border-radius: 10px;
    border: 1px solid rgba(168, 85, 247, 0.35);
    color: #fff;
    padding: 8px 14px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.32), rgba(99, 102, 241, 0.32)), var(--glass-bg);
    box-shadow: 0 0 0 0 var(--ai-glow), var(--glass-shadow);
    transition: box-shadow 0.2s, transform 0.1s, opacity 0.15s;
}
.ai-btn:hover:not(:disabled) {
    box-shadow: 0 0 0 4px var(--ai-glow), var(--glass-shadow);
}
.ai-btn:active:not(:disabled) { transform: scale(0.97); }
.ai-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}
.ai-btn svg { color: #e9d5ff; }

/* AI popover */
.ai-popover {
    position: absolute;
    top: 64px;
    right: 16px;
    width: 310px;
    padding: 16px;
    border-radius: 12px;
    z-index: 6;
}
.ai-popover h3 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 6px;
    color: #fff;
}
.ai-popover .hint { font-size: 12px; margin-bottom: 12px; }
.ai-popover-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 12px;
}

/* Positioning bar (image positioning sub-mode) */
.positioning-bar,
.location-pick-bar {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: 12px;
    z-index: 6;
    max-width: calc(100vw - 48px);
}
.location-pick-bar .positioning-label { max-width: 360px; }
.positioning-label { font-size: 13px; color: var(--text); }

/* Empty-canvas hint */
.empty-canvas-hint {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 14px 22px;
    border-radius: 14px;
    font-size: 13px;
    color: var(--text-muted);
    text-align: center;
    max-width: 460px;
    pointer-events: none;
    z-index: 4;
    transition: opacity 0.3s;
}
.empty-canvas-hint.hidden { opacity: 0; pointer-events: none; }

/* Glassy modal dialog */
.layer-settings-dialog.glass-panel {
    background: var(--glass-bg-strong);
}

/* Layer toggles inside the new sidebar */
.layer-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 10px;
    border-radius: 7px;
    margin-bottom: 4px;
    transition: background 0.15s;
}
.layer-toggle:hover { background: rgba(255,255,255,0.04); }
.layer-toggle label {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    cursor: pointer;
}
.color-dot {
    display: inline-block;
    width: 10px; height: 10px; border-radius: 50%;
}
.count-badge {
    background: var(--bg);
    color: var(--text-muted);
    font-size: 11px;
    padding: 2px 7px;
    border-radius: 10px;
    min-width: 24px;
    text-align: center;
}

/* AI source dirty badge */
.dirty-badge {
    background: rgba(234, 179, 8, 0.16);
    color: #fbbf24;
    font-size: 10px;
    padding: 1px 6px;
    border-radius: 8px;
    margin-left: 4px;
}