:root {
      --bg-body: #f1f5f2;
      --bg-view: #f8faf8;
      --text-primary: #121c17;
      --text-secondary: #4a5c53;
      --bg-panel: rgba(255, 255, 255, 0.82);
      --border-panel: rgba(255, 255, 255, 0.7);
      --shadow-panel: 0 12px 32px -10px rgba(18, 32, 24, 0.08), 0 2px 6px rgba(18, 32, 24, 0.02);
      --bg-hover: rgba(18, 108, 67, 0.05);
      --accent-color: #126c43;
      --accent-gradient: linear-gradient(135deg, #126c43, #199c62);
      --border-divider: rgba(18, 108, 67, 0.08);
      --row-even: rgba(18, 108, 67, 0.02);
      --text-inverse: #ffffff;
      --badge-text: #ffffff;

      --legend-r1: #f7fcf5;
      --legend-r2: #e5f5e0;
      --legend-r3: #c7e9c0;
      --legend-r4: #a1d99b;
      --legend-r5: #74c476;
      --legend-r6: #31a354;
      --legend-r7: #006d2c;
    }

    html.dark-mode {
      color-scheme: dark;
      --bg-body: #0d120f;
      --bg-view: #060907;
      --text-primary: #f0f5f2;
      --text-secondary: #9cb0a4;
      --bg-panel: rgba(16, 24, 20, 0.8);
      --border-panel: rgba(255, 255, 255, 0.06);
      --shadow-panel: 0 20px 48px -12px rgba(0, 0, 0, 0.5), 0 2px 8px rgba(0, 0, 0, 0.3);
      --bg-hover: rgba(26, 160, 166, 0.1);
      --accent-color: #1aa0a6;
      --accent-gradient: linear-gradient(135deg, #1aa0a6, #24c3cb);
      --border-divider: rgba(26, 160, 166, 0.1);
      --row-even: rgba(26, 160, 166, 0.03);
      --text-inverse: #0d120f;
      --badge-text: #ffffff;

      --legend-r1: #1f1a3a;
      --legend-r2: #481e64;
      --legend-r3: #781c6d;
      --legend-r4: #a81c60;
      --legend-r5: #d02c40;
      --legend-r6: #e8682c;
      --legend-r7: #f2b84b;
    }

    html.dark-mode #view.sky {
      background: -webkit-gradient(linear, left top, left bottom, from(#020405), color-stop(0.4, #05080c), to(#0c1119));
      background: linear-gradient(to bottom, #020405 0%, #05080c 40%, #0c1119 100%);
    }

    html {
      color-scheme: light;
      scroll-behavior: smooth;
    }

    body {
      color: var(--text-primary);
      background: var(--bg-body);
      font-family: 'Plus Jakarta Sans', Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      transition: background-color 0.4s cubic-bezier(0.4, 0, 0.2, 1), color 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    }

    #view,
    #view.sky {
      background: var(--bg-view);
      transition: background 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    }

    *,
    *::before,
    *::after {
      box-sizing: border-box;
    }

    #cartobasemap {
      position: absolute;
      left: -1200px;
      top: 0;
      width: 1024px;
      height: 1024px;
      pointer-events: none;
      opacity: 0;
    }

    #basemapstatus {
      position: absolute;
      right: 18px;
      top: 18px;
      z-index: 1000;
      padding: 8px 10px;
      border: 1px solid var(--border-panel);
      border-radius: 8px;
      color: var(--text-secondary);
      background: var(--bg-panel);
      box-shadow: 0 14px 34px var(--shadow-panel);
      backdrop-filter: blur(14px);
      font-size: 12px;
      pointer-events: auto;
    }

    #citylabels {
      position: absolute;
      inset: 0;
      z-index: 900;
      overflow: hidden;
      pointer-events: none;
    }

    #label-lines {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
    }

    #label-lines polyline {
      fill: none;
      stroke: rgba(28, 34, 30, 0.72);
      stroke-width: 1;
      vector-effect: non-scaling-stroke;
    }

    #label-lines circle {
      fill: rgba(28, 34, 30, 0.78);
    }

    .city-label {
      position: absolute;
      display: none;
      align-items: center;
      gap: 6px;
      padding: 5px 8px;
      border: 1px solid rgba(255, 255, 255, 0.16);
      border-radius: 999px;
      color: rgba(255, 255, 255, 0.94);
      background: rgba(12, 16, 14, 0.66);
      backdrop-filter: blur(8px);
      font-size: 16px;
      font-weight: 750;
      line-height: 1;
      letter-spacing: .02em;
      text-transform: uppercase;
      text-shadow: none;
      white-space: nowrap;
      transform: translate(-50%, -50%);
    }

    .city-label::before {
      flex: 0 0 8px;
      width: 8px;
      height: 8px;
      border-radius: 999px;
      content: "";
      background: #f4fbf7;
    }

    .city-label.primary {
      font-size: 18px;
      font-weight: 850;
    }

    .city-label.secondary {
      font-size: 13px;
    }

    #popup,
    #layerpanel {
      left: 20px;
    }

    #view::after {
      position: absolute;
      inset: 0;
      content: "";
      pointer-events: none;
      background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.15) 0%, rgba(255, 255, 255, 0) 25%),
        radial-gradient(circle at 50% 45%, rgba(255, 255, 255, 0) 20%, rgba(18, 32, 24, 0.08) 100%);
    }

    html.dark-mode #view::after {
      background:
        linear-gradient(180deg, rgba(0, 0, 0, 0.4) 0%, rgba(0, 0, 0, 0) 25%),
        radial-gradient(circle at 50% 45%, rgba(0, 0, 0, 0) 20%, rgba(0, 0, 0, 0.4) 100%);
    }

    #header {
      left: 20px;
      top: 20px;
      max-width: min(410px, calc(100vw - 40px));
      margin: 0;
      z-index: 1000;
      pointer-events: auto;
      overflow: visible;
    }

    #appbrand {
      display: grid;
      grid-template-columns: 44px 1fr;
      align-items: center;
      gap: 14px;
      padding: 16px;
      border: 1px solid var(--border-panel);
      border-radius: 16px;
      color: var(--text-primary);
      background: var(--bg-panel);
      box-shadow: var(--shadow-panel);
      backdrop-filter: blur(20px) saturate(120%);
      -webkit-backdrop-filter: blur(20px) saturate(120%);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    #appmark {
      display: grid;
      place-items: center;
      flex: 0 0 44px;
      width: 44px;
      height: 44px;
      border-radius: 12px;
      color: #ffffff;
      background: var(--accent-gradient);
      font-weight: 800;
      font-size: 16px;
      letter-spacing: 0.05em;
      box-shadow: 0 4px 14px rgba(18, 108, 67, 0.2);
      transition: transform 0.3s ease;
    }

    html.dark-mode #appmark {
      box-shadow: 0 4px 14px rgba(26, 160, 166, 0.2);
    }

    #appbrand:hover #appmark {
      transform: scale(1.05) rotate(5deg);
    }

    #apptitle {
      margin: 0;
      font-size: 16px;
      line-height: 1.25;
      font-weight: 800;
      letter-spacing: -0.01em;
    }

    #appsubtitle {
      margin-top: 3px;
      color: var(--text-secondary);
      font-size: 11px;
      font-weight: 500;
      line-height: 1.3;
    }

    #appcontrols {
      grid-column: 1 / -1;
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-top: 10px;
    }

    #layertoggle {
      display: none;
    }

    #layerscrim {
      display: none;
    }

    #activeLayerSelect {
      display: none !important;
    }

    #layercontrols {
      display: grid;
      gap: 10px;
    }

    .layer-sheet-header {
      display: none;
    }

    .layer-theme-toggle {
      display: none;
    }

    .layer-control {
      display: grid;
      grid-template-columns: 1fr auto 96px;
      gap: 12px;
      align-items: center;
      color: var(--text-primary);
      font-size: 13px;
      font-weight: 600;
    }

    .layer-control label {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--text-primary);
      cursor: pointer;
    }

    /* Custom Checkboxes / Switches */
    .layer-control input[type="checkbox"],
    .layer input[type="checkbox"] {
      position: relative;
      width: 38px;
      height: 22px;
      margin: 0;
      border: 0;
      border-radius: 99px;
      appearance: none;
      background: rgba(18, 108, 67, 0.15);
      box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.06);
      cursor: pointer;
      outline: none;
      transition: background-color 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .layer-control input[type="checkbox"]::after,
    .layer input[type="checkbox"]::after {
      content: "";
      position: absolute;
      top: 2px;
      left: 2px;
      width: 18px;
      height: 18px;
      border-radius: 99px;
      background: #ffffff;
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.12);
      transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .layer-control input[type="checkbox"]:checked,
    .layer input[type="checkbox"]:checked {
      background: var(--accent-color);
    }

    .layer-control input[type="checkbox"]:checked::after,
    .layer input[type="checkbox"]:checked::after {
      transform: translateX(16px);
    }

    html.dark-mode .layer-control input[type="checkbox"],
    html.dark-mode .layer input[type="checkbox"] {
      background: rgba(255, 255, 255, 0.1);
    }

    html.dark-mode .layer-control input[type="checkbox"]:checked,
    html.dark-mode .layer input[type="checkbox"]:checked {
      background: var(--accent-color);
    }

    /* Custom Sliders */
    .layer-control input[type="range"],
    .layer input[type="range"] {
      appearance: none;
      width: 96px !important;
      background: transparent;
      cursor: pointer;
      outline: none;
    }

    .layer-control input[type="range"]::-webkit-slider-runnable-track,
    .layer input[type="range"]::-webkit-slider-runnable-track {
      background: var(--border-divider);
      height: 6px;
      border-radius: 3px;
    }

    .layer-control input[type="range"]::-webkit-slider-thumb,
    .layer input[type="range"]::-webkit-slider-thumb {
      appearance: none;
      margin-top: -5px;
      background: var(--accent-color);
      height: 16px;
      width: 16px;
      border-radius: 99px;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.15);
      transition: transform 0.1s ease, background-color 0.2s ease;
    }

    .layer-control input[type="range"]::-webkit-slider-thumb:hover,
    .layer input[type="range"]::-webkit-slider-thumb:hover {
      transform: scale(1.15);
    }

    html.dark-mode .layer-control {
      color: var(--text-primary);
    }

    html.dark-mode .layer-control label {
      color: var(--text-primary);
    }

    .layer-symbol {
      flex: 0 0 10px;
      width: 10px;
      height: 10px;
      border-radius: 3px;
      box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.12);
    }

    .layer-symbol.population {
      background: #168a4d;
    }

    .layer-symbol.river {
      background: #56bec0;
    }

    .layer-symbol.basemap {
      background: #e8ece7;
    }

    /* Navigation Divider */
    .nav-divider {
      width: 1px;
      height: 20px;
      background: var(--border-divider);
      align-self: center;
      margin: 0 4px;
      flex-shrink: 0;
    }

    /* Refactored tool buttons inside navigation bar */
    .tool-action-btn {
      position: relative;
      flex-shrink: 0;
    }

    .tool-action-btn.active {
      border-color: #d81b60 !important;
      color: #ffffff !important;
      background: linear-gradient(135deg, #d81b60, #ec407a) !important;
      box-shadow: 0 4px 12px rgba(216, 27, 96, 0.35) !important;
    }

    /* Premium CSS Tooltip floating above buttons */
    .tool-action-btn::after {
      content: attr(data-tooltip);
      position: absolute;
      bottom: 125%;
      left: 50%;
      transform: translateX(-50%) translateY(10px);
      padding: 6px 10px;
      border-radius: 8px;
      background: rgba(18, 32, 24, 0.9);
      color: #ffffff;
      font: 600 11px 'Plus Jakarta Sans', sans-serif;
      white-space: nowrap;
      pointer-events: none;
      opacity: 0;
      transition: opacity 0.25s cubic-bezier(0.4, 0, 0.2, 1), transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
      box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
      backdrop-filter: blur(6px);
      border: 1px solid rgba(255, 255, 255, 0.08);
      z-index: 1500;
    }

    html.dark-mode .tool-action-btn::after {
      background: rgba(10, 15, 12, 0.92);
      border-color: rgba(255, 255, 255, 0.05);
    }

    .tool-action-btn:hover::after {
      opacity: 1;
      transform: translateX(-50%) translateY(0);
    }



    #activeLayerSelect {
      min-width: 0;
      padding: 8px 9px;
      border: 1px solid #cddbd3;
      border-radius: 7px;
      color: #14231a;
      background: #f8fbf9;
      font: 600 12px Inter, "Segoe UI", sans-serif;
    }

    #activeLayerSelect option {
      color: #17201b;
    }

    /* Action and Navigation Buttons */
    .navbtn,
    #statsclose,
    #themebtn {
      border: 1px solid var(--border-panel);
      border-radius: 10px;
      color: var(--text-primary);
      background: var(--bg-panel);
      box-shadow: var(--shadow-panel);
      backdrop-filter: blur(10px);
      cursor: pointer;
      transition: all 0.2s ease;
      display: inline-flex !important;
      align-items: center;
      justify-content: center;
    }

    #themebtn {
      width: 38px;
      height: 38px;
      padding: 0;
      flex-shrink: 0;
    }

    #themebtn:hover {
      background: var(--bg-hover);
      transform: translateY(-1px);
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
    }

    #themebtn svg {
      width: 18px;
      height: 18px;
      transition: transform 0.3s ease;
    }

    #themebtn:hover svg {
      transform: rotate(20deg);
    }

    /* Light theme defaults (show moon, hide sun) */
    #themebtn .theme-icon-sun {
      display: none;
    }

    #themebtn .theme-icon-moon {
      display: block;
    }

    /* Dark theme active (show sun, hide moon) */
    html.dark-mode #themebtn .theme-icon-sun {
      display: block;
    }

    html.dark-mode #themebtn .theme-icon-moon {
      display: none;
    }

    #top-right-controls {
      position: absolute;
      top: 20px;
      right: 20px;
      z-index: 1000;
      display: flex;
      flex-direction: column;
      gap: 10px;
      pointer-events: auto;
    }

    #top-right-controls button {
      width: 44px;
      height: 44px;
      border: 1px solid var(--border-panel);
      border-radius: 50%;
      color: var(--text-primary);
      background: var(--bg-panel);
      box-shadow: var(--shadow-panel);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
      padding: 0;
      flex-shrink: 0;
    }

    #top-right-controls button:hover {
      background: var(--bg-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 14px rgba(0, 0, 0, 0.08);
    }

    #top-right-controls button:active {
      transform: translateY(0);
    }

    #desktop-layer-toggle svg {
      width: 20px;
      height: 20px;
      transition: transform 0.25s ease;
    }

    #desktop-layer-toggle.active {
      color: var(--badge-text);
      background: var(--accent-gradient);
      border-color: var(--accent-color);
      box-shadow: 0 4px 12px rgba(18, 108, 67, 0.2);
    }

    html.dark-mode #desktop-layer-toggle.active {
      box-shadow: 0 4px 12px rgba(26, 160, 166, 0.2);
    }

    #desktop-layer-toggle.active svg {
      transform: rotate(90deg);
    }

    @media (min-width: 721px) {
      #layercontrols {
        position: fixed;
        top: 76px;
        right: 20px;
        width: 240px;
        z-index: 1000;
        padding: 16px;
        border: 1px solid var(--border-panel);
        border-radius: 16px;
        background: var(--bg-panel);
        box-shadow: var(--shadow-panel);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        display: flex;
        flex-direction: column;
        gap: 12px;
        transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        transform-origin: top right;
      }
      
      #layercontrols.collapsed {
        transform: scale(0.9) translateY(-10px);
        opacity: 0;
        pointer-events: none;
      }
      
      .layer-control {
        grid-template-columns: 1fr auto;
      }
      
      #appcontrols {
        display: none !important;
      }
    }

    #mapnote {
      grid-column: 1 / -1;
      margin-top: 2px;
      padding-top: 12px;
      border-top: 1px solid var(--border-divider);
      color: var(--text-primary);
      font-size: 13px;
      line-height: 1.5;
      pointer-events: auto;
    }

    #mapnote strong {
      display: block;
      margin-bottom: 6px;
      color: var(--text-primary);
      font-size: 14px;
      font-weight: 800;
    }

    #mobileMapTitle {
      display: none;
    }

    #mapnotetext {
      margin: 0;
      color: var(--text-secondary);
    }

    #mapnoteToggle {
      display: none;
    }

    #toolbtns {
      display: none;
      top: 20px;
      left: 20px;
      gap: 8px;
      margin: 0;
      padding: 8px;
      border: 1px solid var(--border-panel);
      border-radius: 12px;
      background: var(--bg-panel);
      box-shadow: var(--shadow-panel);
      backdrop-filter: blur(14px);
    }

    #toolbtns>div {
      box-sizing: border-box;
      width: 38px;
      height: 38px;
      padding: 9px;
      border-radius: 8px;
      background: transparent;
      transition: all .2s ease;
    }

    #toolbtns>div:hover {
      background: var(--bg-hover);
      transform: translateY(-1px);
    }

    #toolbtns>div::before {
      opacity: 0.8;
    }

    #homebtn::before {
      display: block;
      width: 20px;
      height: 20px;
      content: "";
      background: center / contain no-repeat url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg' fill='none' stroke='%23126c43' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 11.5 12 4l9 7.5'/%3E%3Cpath d='M5.5 10.5V20h13v-9.5'/%3E%3Cpath d='M9.5 20v-6h5v6'/%3E%3C/svg%3E");
    }

    html.dark-mode #homebtn::before {
      background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg' fill='none' stroke='%231aa0a6' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 11.5 12 4l9 7.5'/%3E%3Cpath d='M5.5 10.5V20h13v-9.5'/%3E%3Cpath d='M9.5 20v-6h5v6'/%3E%3C/svg%3E");
    }

    #layerpanel {
      top: 236px;
      width: min(342px, calc(100vw - 40px));
      max-height: calc(100vh - 276px);
      margin: 0;
      border: 1px solid var(--border-panel);
      border-radius: 16px;
      background: var(--bg-panel);
      box-shadow: var(--shadow-panel);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      overflow: hidden auto;
    }

    #layerpanel::before {
      display: block;
      padding: 16px 16px 10px;
      content: "Capas del mapa";
      color: var(--text-primary);
      font-size: 11px;
      font-weight: 800;
      letter-spacing: .08em;
      text-transform: uppercase;
      border-bottom: 1px solid var(--border-divider);
    }

    #layerlist {
      padding: 12px;
    }

    .layer {
      margin: 8px 0;
      padding: 12px;
      border: 1px solid var(--border-divider);
      border-radius: 12px;
      background: rgba(255, 255, 255, 0.02);
    }

    .layer>div {
      gap: 8px;
      margin-bottom: 10px;
      color: var(--text-primary);
      font-size: 13px;
      font-weight: 600;
      line-height: 1.3;
    }

    .layer>div:nth-child(n + 2) {
      margin-left: 24px;
      color: var(--text-secondary);
      font-size: 11px;
    }

    .layer input[type="checkbox"] {
      width: 38px;
      height: 22px;
      accent-color: var(--accent-color);
    }

    .layer input[type="range"] {
      width: 100% !important;
      accent-color: var(--accent-color);
    }

    #popup {
      top: 236px;
      max-width: min(410px, calc(100vw - 40px));
      min-width: min(340px, calc(100vw - 40px));
      margin: 0;
      border: 1px solid var(--border-panel);
      border-radius: 16px;
      background: var(--bg-panel);
      box-shadow: var(--shadow-panel);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      overflow: hidden;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    #popup.population-query-popup {
      top: var(--population-popup-top, 236px);
    }

    #popupbar {
      height: auto;
      min-height: 48px;
      padding: 14px 48px 14px 16px;
      border-bottom: 1px solid var(--border-divider);
      color: var(--text-primary);
      font-size: 14px;
      font-weight: 800;
      letter-spacing: -0.01em;
    }

    #closebtn {
      position: absolute;
      top: 10px;
      right: 10px;
      width: 28px;
      height: 28px;
      border: 1px solid var(--border-panel);
      border-radius: 8px;
      color: var(--text-secondary);
      background: var(--bg-panel);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: all 0.2s ease;
    }

    #closebtn:hover {
      color: var(--text-primary);
      background: var(--bg-hover);
      transform: scale(1.05);
    }

    #popupbody {
      padding: 16px;
      max-height: min(580px, calc(100vh - 320px));
      overflow-y: auto;
    }

    #popupbody::-webkit-scrollbar,
    #layerpanel::-webkit-scrollbar {
      width: 6px;
    }

    #popupbody::-webkit-scrollbar-track,
    #layerpanel::-webkit-scrollbar-track {
      background: transparent;
    }

    #popupbody::-webkit-scrollbar-thumb,
    #layerpanel::-webkit-scrollbar-thumb {
      background: var(--border-divider);
      border-radius: 3px;
    }

    #popupbody table {
      width: 100%;
      border-collapse: collapse;
      overflow: hidden;
      border-radius: 12px;
      border: 1px solid var(--border-divider);
      margin-bottom: 12px;
    }

    #popupbody table caption,
    #pageinfo>h1 {
      padding: 10px 14px;
      color: var(--text-inverse);
      background: var(--accent-gradient);
      font-weight: 800;
      font-size: 13px;
      letter-spacing: 0.02em;
      text-align: left;
      border-bottom: 1px solid var(--border-divider);
    }

    #popupbody table td {
      padding: 10px 14px;
      border-bottom: 1px solid var(--border-divider);
      font-size: 12px;
      color: var(--text-primary);
    }

    #popupbody table tr:last-child td {
      border-bottom: 0;
    }

    #qr_layername_table {
      display: none !important;
    }

    #qr_coords_table {
      display: none !important;
    }

    #qr_layername_table tr,
    #qr_coords_table tr,
    #qr_attrs_table tr:nth-child(odd),
    #usage tr:nth-child(odd),
    table.measure tr:nth-child(odd) {
      background-color: var(--row-even);
    }

    .action-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 8px 14px;
      margin: 8px 6px 0 0;
      border: 1px solid var(--border-panel);
      border-radius: 10px;
      color: var(--text-primary);
      background: var(--bg-panel);
      font: 600 12px 'Plus Jakarta Sans', sans-serif;
      cursor: pointer;
      transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .action-btn:hover {
      background: var(--bg-hover);
      transform: translateY(-1px);
    }

    .population-popup {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      padding-bottom: 12px;
      border-bottom: 1px solid var(--border-divider);
      margin-bottom: 10px;
    }

    .population-popup__value {
      margin: 0;
      color: var(--accent-color);
      font-size: 24px;
      font-weight: 850;
      line-height: 1.05;
      letter-spacing: -0.02em;
    }

    .population-popup__badge {
      flex: 0 0 auto;
      padding: 4px 10px;
      border-radius: 99px;
      color: var(--badge-text);
      background: var(--accent-gradient);
      font-size: 11px;
      font-weight: 700;
      box-shadow: 0 2px 8px rgba(18, 108, 67, 0.15);
    }

    html.dark-mode .population-popup__badge {
      box-shadow: 0 2px 8px rgba(26, 160, 166, 0.15);
    }

    .population-context {
      display: grid;
      gap: 8px;
      color: var(--text-primary);
      font-size: 12px;
      line-height: 1.35;
    }

    .population-context__item {
      display: grid;
      gap: 2px;
    }

    .population-context__label {
      color: var(--text-secondary);
      font-size: 10px;
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 0.04em;
    }

    .population-context__value {
      font-weight: 750;
    }

    .population-context__actions {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 2px;
    }

    .population-context__actions a,
    .population-context__actions button {
      display: inline-flex;
      align-items: center;
      min-height: 32px;
      padding: 7px 10px;
      border: 1px solid var(--border-panel);
      border-radius: 9px;
      color: var(--text-primary);
      background: var(--bg-panel);
      font: 750 11px 'Plus Jakarta Sans', sans-serif;
      text-decoration: none;
      cursor: pointer;
    }

    .population-context__actions a:hover,
    .population-context__actions button:hover {
      background: var(--bg-hover);
    }

    .population-context__actions .population-context__primary-action {
      border-color: var(--accent-color);
      color: var(--badge-text);
      background: var(--accent-gradient);
    }

    .population-context__actions .population-context__primary-action:hover {
      background: var(--accent-gradient);
      filter: brightness(1.04);
    }

    #urlbox {
      box-sizing: border-box;
      width: 100%;
      padding: 10px 12px;
      border: 1px solid var(--border-panel);
      border-radius: 10px;
      background: var(--bg-body);
      color: var(--text-primary);
      font-family: inherit;
      outline: none;
      font-size: 12px;
    }

    #urlbox:focus {
      border-color: var(--accent-color);
    }

    #progress {
      position: fixed;
      inset: 0;
      display: grid;
      place-items: center;
      width: 100%;
      height: 100%;
      z-index: 10000;
      padding: 24px;
      color: var(--text-primary);
      background:
        linear-gradient(180deg, rgba(248, 250, 248, 0.94), rgba(241, 245, 242, 0.98));
      transition: opacity 0.45s ease, visibility 0.45s ease;
    }

    html.dark-mode #progress {
      background:
        linear-gradient(180deg, rgba(6, 9, 7, 0.96), rgba(13, 18, 15, 0.98));
    }

    #progress.is-hidden {
      visibility: hidden;
      opacity: 0;
      pointer-events: none;
    }

    #loadingpanel {
      display: grid;
      justify-items: center;
      gap: 10px;
      width: min(620px, 100%);
      padding: 24px 20px;
    }

    #loadingring {
      position: relative;
      display: grid;
      place-items: center;
      width: 86px;
      height: 86px;
      border-radius: 50%;
      background: conic-gradient(from 0deg, #126c43 0 28%, rgba(18, 108, 67, 0.16) 28% 100%);
      animation: loadingring-spin 1.2s linear infinite;
    }

    html.dark-mode #loadingring {
      background: conic-gradient(from 0deg, #24c3cb 0 28%, rgba(26, 160, 166, 0.18) 28% 100%);
    }

    #loadingring::before {
      position: absolute;
      inset: 5px;
      border-radius: 50%;
      background: rgba(248, 250, 248, 0.96);
      content: "";
    }

    html.dark-mode #loadingring::before {
      background: rgba(13, 18, 15, 0.96);
    }

    #loadingtitle {
      margin-top: 12px;
      text-align: center;
      color: var(--text-secondary);
      font-size: 15px;
      font-weight: 800;
      line-height: 1.3;
    }

    #loadingcredit {
      text-align: center;
      color: var(--text-primary);
      max-width: 100%;
      font-size: clamp(18px, 3.2vw, 28px);
      font-weight: 750;
      line-height: 1.15;
      white-space: nowrap;
    }

    #loadingtext {
      margin-top: 14px;
      text-align: center;
      color: var(--text-primary);
      font-size: 12px;
      font-weight: 800;
      letter-spacing: 0.45em;
      line-height: 1.35;
    }

    #progressbar {
      position: absolute;
      inset: 0;
      width: 86px !important;
      height: 86px !important;
      border-radius: 50%;
      background: transparent !important;
      opacity: 0;
    }

    #progress:not(.is-hidden) #progressbar.fadeout {
      height: 86px !important;
      opacity: 0;
    }

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

    @media (prefers-reduced-motion: reduce) {
      #loadingring {
        animation: none;
      }
    }

    #footer {
      display: none;
      right: 20px;
      bottom: 20px;
      left: auto;
      z-index: 1000;
      pointer-events: none;
    }

    #footercontent {
      display: grid;
      gap: 8px;
      justify-items: end;
    }

    #maplegend {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 14px;
      padding: 12px 16px;
      border: 1px solid var(--border-panel);
      border-radius: 12px;
      color: var(--text-primary);
      background: var(--bg-panel);
      box-shadow: var(--shadow-panel);
      backdrop-filter: blur(14px);
      font-size: 12px;
      font-weight: 600;
    }

    #datasource {
      margin-top: 8px;
      padding: 8px 12px;
      border: 1px solid var(--border-panel);
      border-radius: 10px;
      color: var(--text-secondary);
      background: var(--bg-panel);
      box-shadow: var(--shadow-panel);
      backdrop-filter: blur(10px);
      font-size: 11px;
      font-weight: 500;
      line-height: 1.35;
    }

    #designcredit {
      margin-top: 6px;
      padding: 8px 12px;
      border: 1px solid var(--border-panel);
      border-radius: 10px;
      color: var(--text-secondary);
      background: var(--bg-panel);
      box-shadow: var(--shadow-panel);
      backdrop-filter: blur(10px);
      font-size: 11px;
      font-weight: 500;
      line-height: 1.35;
    }

    #designcredit a {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      color: var(--accent-color);
      font-weight: 700;
      text-decoration: none;
      pointer-events: auto;
      transition: opacity 0.2s ease;
    }

    #designcredit a:hover {
      opacity: 0.8;
      text-decoration: underline;
    }

    .external-link-icon {
      width: 12px;
      height: 12px;
      color: var(--accent-color);
    }

    #heightlegend {
      position: absolute;
      left: 20px;
      bottom: 20px;
      z-index: 1000;
      min-width: 270px;
      padding: 16px;
      border: 1px solid var(--border-panel);
      border-radius: 16px;
      color: var(--text-primary);
      background: var(--bg-panel);
      box-shadow: var(--shadow-panel);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      font-size: 12px;
      line-height: 1.4;
      pointer-events: auto;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    #heightlegend strong {
      display: block;
      margin-bottom: 6px;
      color: var(--text-primary);
      font-size: 13px;
      font-weight: 800;
    }

    #legendtoggle {
      display: none;
    }

    #heightlegend .note {
      margin-bottom: 10px;
      color: var(--text-secondary);
      font-weight: 500;
    }

    #heightlegend .range {
      display: grid;
      grid-template-columns: 96px 1fr;
      align-items: center;
      gap: 8px;
      font-weight: 600;
      margin-bottom: 6px;
    }

    #heightlegend .range::before {
      width: var(--bar, 18%);
      height: 8px;
      border-radius: 3px;
      content: "";
      box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.06);
    }

    #heightlegend .r1 {
      --bar: 18%;
    }

    #heightlegend .r2 {
      --bar: 28%;
    }

    #heightlegend .r3 {
      --bar: 42%;
    }

    #heightlegend .r4 {
      --bar: 56%;
    }

    #heightlegend .r5 {
      --bar: 70%;
    }

    #heightlegend .r6 {
      --bar: 84%;
    }

    #heightlegend .r7 {
      --bar: 100%;
    }

    #heightlegend .r1::before {
      background: var(--legend-r1);
    }

    #heightlegend .r2::before {
      background: var(--legend-r2);
    }

    #heightlegend .r3::before {
      background: var(--legend-r3);
    }

    #heightlegend .r4::before {
      background: var(--legend-r4);
    }

    #heightlegend .r5::before {
      background: var(--legend-r5);
    }

    #heightlegend .r6::before {
      background: var(--legend-r6);
    }

    #heightlegend .r7::before {
      background: var(--legend-r7);
    }

    #thresholdControl {
      margin-top: 12px;
      padding-top: 12px;
      border-top: 1px solid var(--border-divider);
    }

    #thresholdControl label {
      display: flex;
      justify-content: space-between;
      gap: 10px;
      color: var(--text-secondary);
      font-size: 11px;
      font-weight: 600;
    }

    #populationThreshold {
      width: 100%;
      margin-top: 8px;
    }

    #heightscale {
      display: block;
      margin-top: 8px;
      color: var(--text-secondary);
      font-size: 10px;
      font-weight: 500;
    }

    #heightscale::after {
      display: none;
    }

    #statsPanel {
      display: none !important;
      position: absolute;
      top: 20px;
      right: 20px;
      z-index: 1000;
      width: min(320px, calc(100vw - 40px));
      padding: 16px;
      border: 1px solid var(--border-panel);
      border-radius: 16px;
      color: var(--text-primary);
      background: var(--bg-panel);
      box-shadow: var(--shadow-panel);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      transform: translateX(calc(100% + 28px));
      transition: transform .3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    #statsPanel.open {
      transform: translateX(0);
    }

    #statsPanel h2 {
      margin: 0 38px 12px 0;
      font-size: 15px;
      font-weight: 800;
      letter-spacing: -0.01em;
    }

    #statsclose {
      position: absolute;
      top: 12px;
      right: 12px;
      width: 28px;
      height: 28px;
      font-size: 18px;
    }

    #statsPanel dl {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 8px 12px;
      margin: 0;
    }

    #statsPanel dt {
      color: var(--text-secondary);
      font-size: 12px;
      font-weight: 500;
    }

    #statsPanel dd {
      margin: 0;
      text-align: right;
      font-size: 13px;
      font-weight: 700;
    }

    #sparkline {
      width: 100%;
      height: 42px;
      margin-top: 12px;
    }

    #nav3d {
      position: absolute;
      left: 50%;
      bottom: 20px;
      transform: translateX(-50%);
      z-index: 1000;
      display: flex;
      flex-direction: row;
      gap: 8px;
      padding: 8px;
      border: 1px solid var(--border-panel);
      border-radius: 12px;
      background: var(--bg-panel);
      box-shadow: var(--shadow-panel);
      backdrop-filter: blur(14px);
    }

    .navbtn {
      width: 38px;
      height: 38px;
      font-size: 13px;
    }

    .navbtn.active {
      color: var(--badge-text);
      background: var(--accent-gradient);
    }

    .navbtn svg {
      width: 18px;
      height: 18px;
    }

    .legenditem {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      white-space: nowrap;
    }

    .swatch {
      width: 10px;
      height: 10px;
      border-radius: 3px;
      box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.12);
    }

    .swatch.population {
      background: #168a4d;
    }

    .swatch.river {
      background: #56bec0;
    }

    .swatch.basemap {
      background: #e8ece7;
    }

    #navigation {
      display: none;
      right: 12px;
      bottom: 80px;
      filter: drop-shadow(0 8px 18px rgba(33, 45, 38, 0.18));
    }

    #northarrow {
      display: none;
      left: 20px;
      bottom: 20px;
    }

    #narrativebox {
      left: 20px;
      top: 236px;
      border: 1px solid var(--border-panel);
      border-radius: 16px;
      background-color: var(--bg-panel);
      box-shadow: var(--shadow-panel);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      padding: 16px;
      width: min(342px, calc(100vw - 40px));
      transition: all 0.3s ease;
    }

    @media (max-width: 720px) {
      body {
        overflow: hidden;
      }

      #popup,
      #header,
      #layerpanel,
      #narrativebox {
        left: max(12px, env(safe-area-inset-left));
        right: max(12px, env(safe-area-inset-right));
        width: auto;
      }

      #header {
        top: 0;
        left: 0;
        right: 0;
        width: auto;
        max-width: none;
        z-index: 1900;
        pointer-events: none;
      }

      #desktop-layer-toggle {
        display: none !important;
      }

      #top-right-controls {
        position: fixed;
        right: max(16px, env(safe-area-inset-right));
        top: calc(var(--mobile-layer-button-top, max(16px, env(safe-area-inset-top))) + 60px);
        z-index: 1350;
        display: flex !important;
        flex-direction: column;
        gap: 10px;
        pointer-events: auto;
      }

      #themebtn {
        display: inline-flex !important;
        width: 48px !important;
        height: 48px !important;
        border-radius: 50% !important;
        border: 1px solid var(--border-panel) !important;
        background: var(--bg-panel) !important;
        box-shadow: var(--shadow-panel) !important;
        backdrop-filter: blur(14px) !important;
        -webkit-backdrop-filter: blur(14px) !important;
        cursor: pointer;
        align-items: center;
        justify-content: center;
      }

      #appbrand {
        display: block;
        padding: 0;
        border: 0;
        background: transparent;
        box-shadow: none;
        backdrop-filter: none;
        overflow: visible;
      }

      #appmark {
        display: none;
      }

      #appbrand>div:not(#appcontrols):not(#mapnote) {
        display: none;
      }

      #appcontrols {
        display: block;
        margin: 0;
        pointer-events: none;
      }

      #layertoggle {
        position: fixed;
        right: max(16px, env(safe-area-inset-right));
        top: var(--mobile-layer-button-top, max(16px, env(safe-area-inset-top)));
        z-index: 1350;
        display: inline-grid;
        align-items: center;
        justify-content: center;
        width: 48px;
        height: 48px;
        min-height: 48px;
        padding: 0;
        border: 1px solid var(--border-panel);
        border-radius: 999px;
        color: var(--text-primary);
        background: var(--bg-panel);
        box-shadow: var(--shadow-panel);
        backdrop-filter: blur(14px);
        -webkit-backdrop-filter: blur(14px);
        font-size: 0;
        font-weight: 800;
        cursor: pointer;
        pointer-events: auto;
        transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
      }

      #layertoggle:active {
        transform: scale(0.92);
      }

      #layertoggle::after {
        content: "";
        position: absolute;
        right: 6px;
        top: 6px;
        width: 8px;
        height: 8px;
        border-radius: 999px;
        background: var(--accent-color);
      }

      #appbrand:not(.controls-collapsed) #layertoggle::after {
        display: none;
      }

      #appbrand.controls-collapsed #layercontrols {
        transform: translateY(calc(100% + 24px));
        opacity: 0;
        pointer-events: none;
      }

      #layertoggle::before {
        width: 24px;
        height: 24px;
        content: "";
        background: center / contain no-repeat url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg' fill='none' stroke='%23121c17' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m12 3 8 4.5-8 4.5-8-4.5L12 3Z'/%3E%3Cpath d='m4 12 8 4.5 8-4.5'/%3E%3Cpath d='m4 16.5 8 4.5 8-4.5'/%3E%3C/svg%3E");
        font-size: 0;
      }

      html.dark-mode #layertoggle::before {
        background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg' fill='none' stroke='%23f0f5f2' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m12 3 8 4.5-8 4.5-8-4.5L12 3Z'/%3E%3Cpath d='m4 12 8 4.5 8-4.5'/%3E%3Cpath d='m4 16.5 8 4.5 8-4.5'/%3E%3C/svg%3E");
      }

      #appbrand:not(.controls-collapsed) #layertoggle::before {
        width: auto;
        height: auto;
        background-image: none;
        content: "×";
        font-size: 28px;
        font-weight: 300;
      }

      #layerscrim {
        position: fixed;
        inset: 0;
        z-index: 1750;
        display: block;
        background: rgba(0, 0, 0, 0.4);
        opacity: 0;
        pointer-events: none;
        backdrop-filter: blur(5px);
        -webkit-backdrop-filter: blur(5px);
        transition: opacity .25s ease;
      }

      #layerscrim.open {
        opacity: 1;
        pointer-events: auto;
      }

      /* theme button is shown under layer button on mobile */

      #layercontrols {
        position: fixed;
        right: 0;
        bottom: 0;
        left: 0;
        z-index: 1800;
        display: grid;
        gap: 14px;
        max-height: min(60dvh, 460px);
        padding: 20px 18px calc(18px + env(safe-area-inset-bottom));
        border: 1px solid var(--border-panel);
        border-radius: 24px 24px 0 0;
        color: var(--text-primary);
        background: var(--bg-panel);
        box-shadow: 0 -10px 32px rgba(0, 0, 0, 0.15);
        backdrop-filter: blur(24px) saturate(120%);
        -webkit-backdrop-filter: blur(24px) saturate(120%);
        overflow: auto;
        pointer-events: auto;
        transform: translateY(0);
        opacity: 1;
        transition: transform .25s cubic-bezier(0.4, 0, 0.2, 1), opacity .2s ease;
      }

      #layercontrols::before {
        display: block;
        order: -2;
        width: 44px;
        height: 5px;
        margin: -8px auto 0;
        border-radius: 999px;
        content: "";
        background: var(--border-divider);
        opacity: 0.8;
      }

      #layercontrols::after {
        display: none;
      }

      .layer-sheet-header {
        order: -1;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 14px;
        margin-bottom: 4px;
      }

      .layer-sheet-header h2 {
        margin: 0;
        font-size: 18px;
        font-weight: 800;
        letter-spacing: -0.01em;
      }

      #layerSheetClose {
        display: inline-grid;
        place-items: center;
        width: 38px;
        height: 38px;
        border: 0;
        border-radius: 999px;
        color: var(--text-primary);
        background: var(--bg-hover);
        font-size: 18px;
        font-weight: 400;
        line-height: 1;
        cursor: pointer;
      }

      .layer-theme-toggle {
        order: 0;
        display: flex;
        align-items: center;
        justify-content: space-between;
        min-height: 48px;
        padding: 12px 14px;
        border: 1px solid var(--border-divider);
        border-radius: 12px;
        color: var(--text-primary);
        background: var(--bg-hover);
        font-size: 13px;
        font-weight: 700;
        cursor: pointer;
      }

      .layer-theme-toggle::after {
        width: 36px;
        height: 22px;
        border-radius: 999px;
        content: "";
        background:
          radial-gradient(circle at var(--theme-knob-x, 11px) 50%, #fff 0 7px, transparent 8px),
          var(--accent-color);
        box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.12);
        transition: background-color 0.2s ease;
      }

      html.dark-mode .layer-theme-toggle {
        --theme-knob-x: 25px;
      }

      .layer-control {
        grid-template-columns: minmax(0, 1fr) auto;
        gap: 10px;
        padding: 10px 14px;
        border: 1px solid var(--border-divider);
        border-radius: 12px;
        background: var(--bg-hover);
        color: var(--text-primary);
        font-size: 13px;
      }

      .layer-control label {
        color: var(--text-primary);
        font-weight: 700;
        min-width: 0;
      }

      .layer-control input[type="checkbox"] {
        position: relative;
        flex: 0 0 38px;
        width: 38px;
        height: 22px;
        margin: 0;
        border: 0;
        border-radius: 999px;
        appearance: none;
        background:
          radial-gradient(circle at 11px 50%, #fff 0 7px, transparent 8px),
          rgba(18, 108, 67, 0.15);
        box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.06);
        cursor: pointer;
      }

      .layer-control input[type="checkbox"]:checked {
        background:
          radial-gradient(circle at 25px 50%, #fff 0 7px, transparent 8px),
          var(--accent-color);
      }

      html.dark-mode .layer-control,
      html.dark-mode .layer-control label {
        color: var(--text-primary);
      }

      .layer-control input[type="range"] {
        display: none;
      }

      #mapnote {
        position: absolute;
        top: var(--mobile-note-top, 132px);
        right: max(12px, env(safe-area-inset-right));
        left: max(12px, env(safe-area-inset-left));
        width: auto;
        max-width: none;
        padding: 12px;
        font-size: 12px;
        line-height: 1.45;
        z-index: 1200;
        border-radius: 14px;
        border: 1px solid var(--border-panel);
        background: var(--bg-panel);
        box-shadow: var(--shadow-panel);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        margin-top: 0;
        border-top: 1px solid var(--border-panel);
      }

      #mobileMapTitle {
        display: block;
        margin: 0 0 6px;
        color: var(--text-primary);
        font-size: 15px;
        font-weight: 800;
        line-height: 1.2;
      }

      #mapnote strong {
        margin-bottom: 4px;
        font-size: 12px;
      }

      #mapnotetext {
        display: -webkit-box;
        overflow: hidden;
        overflow-wrap: anywhere;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 2;
      }

      #mapnote.expanded #mapnotetext {
        display: block;
        -webkit-line-clamp: unset;
      }

      #mapnoteToggle {
        display: inline-flex;
        align-items: center;
        min-height: 32px;
        margin-top: 4px;
        padding: 0;
        border: 0;
        color: var(--accent-color);
        background: transparent;
        font: 800 11px 'Plus Jakarta Sans', sans-serif;
        cursor: pointer;
      }

      #datasource,
      #designcredit {
        margin-top: 6px;
        padding: 6px 10px;
        font-size: 10px;
        line-height: 1.25;
        border-radius: 8px;
      }

      #designcredit a {
        display: inline;
      }

      #toolbtns {
        top: 12px;
        left: 12px;
        display: none;
      }



      #layerpanel,
      #popup,
      #narrativebox {
        top: var(--mobile-popups-top, 228px);
        width: auto;
        max-width: none;
        max-height: max(140px, calc(100dvh - var(--mobile-popups-top, 228px) - var(--mobile-bottom-ui, 92px)));
        border-radius: 14px;
      }

      #popup {
        min-width: 0;
      }

      #popupbody {
        max-height: max(96px, calc(100dvh - var(--mobile-popups-top, 228px) - var(--mobile-bottom-ui, 92px) - 54px));
        overflow: auto;
        padding: 12px;
      }

      #popupbody table {
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        border-radius: 8px;
      }

      #popup.population-query-popup {
        top: var(--population-popup-top, var(--mobile-popups-top, 228px));
        max-height: max(120px, calc(100dvh - var(--population-popup-top, var(--mobile-popups-top, 228px)) - var(--mobile-bottom-ui, 92px)));
      }

      #popup.population-query-popup #popupbody {
        max-height: max(76px, calc(100dvh - var(--population-popup-top, var(--mobile-popups-top, 228px)) - var(--mobile-bottom-ui, 92px) - 54px));
      }

      #footer {
        right: max(12px, env(safe-area-inset-right));
        bottom: calc(12px + env(safe-area-inset-bottom));
        left: max(12px, env(safe-area-inset-left));
      }

      #heightlegend {
        left: max(12px, env(safe-area-inset-left));
        right: max(12px, env(safe-area-inset-right));
        display: grid;
        grid-template-columns: minmax(0, 1fr) 48px;
        align-items: center;
        column-gap: 8px;
        width: auto;
        bottom: var(--mobile-legend-bottom, calc(72px + env(safe-area-inset-bottom)));
        min-width: 0;
        max-height: min(34dvh, 240px);
        padding: 12px;
        overflow: auto;
        font-size: 11px;
        border-radius: 14px;
      }

      #heightlegend strong {
        display: inline-flex;
        align-items: center;
        min-height: 48px;
        margin: 0;
        font-size: 12px;
      }

      #legendtoggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 48px;
        height: 48px;
        min-width: 48px;
        min-height: 48px;
        margin: 0;
        border: 1px solid var(--border-panel);
        border-radius: 10px;
        color: var(--text-primary);
        background: var(--bg-panel);
        cursor: pointer;
        padding: 0;
        touch-action: manipulation;
        -webkit-tap-highlight-color: transparent;
      }

      #heightlegend .note,
      #heightlegend .range,
      #heightlegend #thresholdControl,
      #heightlegend #heightscale {
        grid-column: 1 / -1;
      }

      #legendtoggle svg {
        width: 18px;
        height: 18px;
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        transform: rotate(0deg);
      }

      #heightlegend:not(.collapsed) #legendtoggle svg {
        transform: rotate(180deg);
      }

      #heightlegend.collapsed {
        max-height: none;
        overflow: hidden;
      }

      #heightlegend.collapsed .note,
      #heightlegend.collapsed .range,
      #heightlegend.collapsed #thresholdControl,
      #heightlegend.collapsed #heightscale {
        display: none;
      }

      #heightlegend .range {
        grid-template-columns: minmax(92px, 34%) 1fr;
        gap: 6px;
      }

      #thresholdControl {
        margin-top: 10px;
        padding-top: 10px;
      }

      #populationThreshold {
        display: block;
        max-width: 100%;
      }

      #heightscale span {
        overflow-wrap: anywhere;
      }

      #statsPanel {
        top: auto;
        right: 0;
        bottom: 0;
        width: auto;
        border-radius: 16px 16px 0 0;
      }

      #nav3d {
        display: flex !important;
        position: fixed;
        left: 50%;
        bottom: calc(8px + env(safe-area-inset-bottom));
        transform: translateX(-50%);
        width: auto;
        gap: 6px;
        padding: 6px;
        border: 1px solid var(--border-panel);
        border-radius: 30px;
        background: var(--bg-panel);
        box-shadow: var(--shadow-panel);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        z-index: 1200;
        pointer-events: auto;
      }

      .navbtn {
        width: 38px;
        height: 38px;
        min-width: 0;
        min-height: 0;
        border-radius: 50% !important;
        display: inline-flex !important;
        align-items: center;
        justify-content: center;
        font: 750 11px 'Plus Jakarta Sans', sans-serif;
      }

      #pitchupbtn,
      #pitchdownbtn {
        display: none !important;
      }

      #maplegend {
        justify-content: space-between;
        gap: 8px;
        font-size: 11px;
        padding: 10px 14px;
        border-radius: 10px;
      }

      .population-popup__value {
        font-size: 21px;
      }

      #footercontent {
        justify-items: stretch;
      }

      #datasource {
        text-align: center;
      }

      #navigation {
        right: max(8px, env(safe-area-inset-right));
        bottom: calc(var(--mobile-legend-bottom, calc(72px + env(safe-area-inset-bottom))) + 72px);
        transform: scale(.78);
        transform-origin: right bottom;
      }

      #basemapstatus {
        display: none;
      }

      .city-label {
        font-size: 11px;
      }
    }

    @media (max-width: 480px) {

      #header,
      #mapnote,
      #heightlegend {
        left: max(8px, env(safe-area-inset-left));
        right: max(8px, env(safe-area-inset-right));
        width: auto;
      }

      #header {
        left: 0;
        right: 0;
        width: auto;
      }

      #appbrand {
        display: block;
        padding: 0;
        border: 0;
        background: transparent;
        box-shadow: none;
        backdrop-filter: none;
      }

      #appmark {
        display: none;
      }

      #appbrand>div:not(#appcontrols):not(#mapnote) {
        display: none;
      }

      .layer-control {
        grid-template-columns: minmax(0, 1fr) auto;
      }

      .layer-control input[type="range"] {
        display: none;
      }

      #mapnote {
        top: var(--mobile-note-top, 126px);
      }

      #datasource {
        display: none;
      }

      #heightlegend {
        bottom: var(--mobile-legend-bottom, calc(66px + env(safe-area-inset-bottom)));
        max-height: min(28dvh, 188px);
        padding: 8px;
      }

      #heightlegend .range {
        grid-template-columns: minmax(78px, 35%) 1fr;
        gap: 5px;
      }

      #thresholdControl label {
        align-items: flex-start;
        flex-direction: column;
        gap: 3px;
      }

      #heightscale {
        font-size: 9px;
      }

      #nav3d {
        gap: 4px;
        padding: 4px;
        border-radius: 24px;
      }

      .navbtn {
        width: 36px;
        height: 36px;
      }

      #navigation {
        bottom: calc(var(--mobile-legend-bottom, calc(66px + env(safe-area-inset-bottom))) + 64px);
        transform: scale(.72);
      }
    }

    @media (max-width: 360px) {

      #appsubtitle,
      #mapnote:not(.expanded) #mapnotetext {
        display: none;
      }

      #heightlegend .note,
      #heightscale {
        display: none;
      }

      #heightlegend {
        max-height: min(24dvh, 150px);
      }

      #zoominbtn,
      #zoomoutbtn {
        display: none !important;
      }
    }

    /* Accessible Focus Styles */
    a:focus-visible,
    button:focus-visible,
    select:focus-visible,
    input:focus-visible,
    div[role="button"]:focus-visible {
      outline: 2px solid var(--accent-color) !important;
      outline-offset: 2px !important;
    }

    /* Style override for pageinfo h2 to preserve visual formatting from Qgis2threejs.css */
    #pageinfo > h2 {
      background-color: gray;
      color: white;
      font-size: small;
      font-weight: normal;
      margin-top: 5px;
      margin-bottom: 3px;
      padding: 1px 1px 1px 6px;
    }