:root {
  --header-h: 50px;
  --bg-color: #1a1a1a;
  --panel-bg: rgba(40, 40, 40, 0.85);
  --header-bg: #1e1e1e;
  --text-color: #e0e0e0;
  --text-muted: #9e9e9e;
  --accent-color: #007ac2;
  --border-color: rgba(255, 255, 255, 0.1);
  --panel-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --backdrop-blur: 10px;
}

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

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  width: 100%;
  font-family: 'Open Sans', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  overflow: hidden;
}

#viewDiv {
  position: absolute;
  top: 0;
  left: 0;
  right: 0; 
  bottom: 0;
  padding: 0;
  margin: 0;
}

#headerBar {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background-color: var(--header-bg);
  color: var(--text-color);
  padding: 0 20px; 
  z-index: 100;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  display: flex; 
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
}

.header-right-controls {
  display: flex;
  align-items: center;
  gap: 15px; 
}

.header-app-title {
  font-size: 20px;
  font-weight: bold;
  text-decoration: none;
  color: var(--text-color);
}

.header-button {
  font-size: 25px; 
  color: var(--text-muted);
  background: none;
  border: none;
  cursor: pointer;
  transition: color 0.2s ease-in-out;
}
.header-button:hover {
  color: white;
}

.header-separator {
    width: 1px;              
    height: 24px;            
    background-color: #9e9e9e; 
    margin: 0 2px;
    opacity: 0.7;            
}

.panel {
  background: var(--panel-bg);
  backdrop-filter: blur(var(--backdrop-blur));
  -webkit-backdrop-filter: blur(var(--backdrop-blur));
  padding: 20px;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: var(--panel-shadow);
  z-index: 50;
  transition: opacity 0.3s, transform 0.3s;
}

#addLayerPanel, #symbologyEditorPanel, #methodSelectionPanel, #elevationPanel, #addBuildingsPanel {
  position: absolute;
  top: calc(var(--header-h) + 15px);
  right: 15px; 
  width: 320px;
  max-height: calc(100vh - var(--header-h) - 35px - 33vh - 30px);
  overflow-y: auto; 
}

#addLayerPanel {
    display: none; 
}

#layerListPanel {
    position: absolute;
    bottom: 35px;
    right: 15px;
    width: 320px;
    max-height: 33vh;
    overflow-y: auto;
}

.panel h3 { 
  font-size: 20px; 
  margin: 0 0 15px 0;
  color: white;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--border-color);
  text-align: center;
}

.panel h2 {
  font-size: 14px; 
  font-weight: bold;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 20px; 
  margin-bottom: 10px;
}

.panel label {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 5px;
  display: block;
}

.panel input[type="text"], 
.panel input[type="number"],
.panel select {
  width: 100%; 
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 14px;
  margin-bottom: 0px;
  background-color: rgba(0,0,0,0.2);
  color: var(--text-color);
}

.panel select option {
  background-color: var(--header-bg);
  color: var(--text-color);
}

.panel input[type="color"] {
  -webkit-appearance: none; -moz-appearance: none; appearance: none;
  background-color: transparent;
  width: 100%; height: 35px; flex-grow: 1;
  border: none; outline: none; cursor: pointer;
  padding: 0; border-radius: 6px;
  transition: transform 0.2s ease-in-out;
}
.panel input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
.panel input[type="color"]::-webkit-color-swatch { border: none; border-radius: 6px; }
.panel input[type="color"]:hover { transform: scale(1.05); }

.color-pickers-wrapper { display: flex; gap: 10px; }

#loadLayerBtn, #closeSymbologyBtn {
  width: 100%; padding: 10px; background-color: var(--accent-color);
  color: white; border: none; border-radius: 6px;
  font-size: 16px; font-weight: bold; cursor: pointer;
  transition: background-color 0.2s; margin-top: 10px;
}
#loadLayerBtn:hover, #closeSymbologyBtn:hover { background-color: #0099f7; }
#loadLayerBtn:disabled { background-color: var(--text-muted); cursor: not-allowed; } 


#colorRampPreview { width: 100%; height: 15px; border-radius: 4px; margin-top: 10px; }
hr { border: 0; border-top: 1px solid var(--border-color); margin: 20px 0; }
.placeholder-text { color: var(--text-muted); text-align: center; margin: 10px 0; font-style: italic; }

#layer-list { list-style: none; padding: 0; margin: 0; }
#layer-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 5px;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
    gap: 10px;
}
#layer-list li:last-child { border-bottom: none; }

#layer-list li > span {
    flex-grow: 1; 
    min-width: 0; 
    overflow: hidden; 
    text-overflow: ellipsis; 
    white-space: nowrap;
}

.layer-controls {
    flex-shrink: 0; 
    display: flex; 
}

.layer-controls button {
    background: none; border: none;
    color: var(--text-muted); font-size: 16px;
    cursor: pointer; transition: color 0.2s; padding: 5px;
}
.layer-controls button:hover { color: white; }
.remove-layer-btn:hover { color: #ff5555; }

.esri-widget {
    background: var(--panel-bg) !important;
    backdrop-filter: blur(var(--backdrop-blur)) !important;
    -webkit-backdrop-filter: blur(var(--backdrop-blur)) !important;
    color: var(--text-color) !important;
    border: 1px solid var(--border-color) !important;
    box-shadow: var(--panel-shadow) !important;
}
.esri-legend__service-label, .esri-basemap-gallery__item-title {
    color: var(--text-color) !important;
}
.esri-widget--button:hover {
    background-color: rgba(255,255,255,0.1) !important;
}
.esri-zoom .esri-widget--button {
    border-bottom: 1px solid var(--border-color) !important;
}

.modal-overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.7); z-index: 1000; justify-content: center; align-items: center; }
.help-modal { 
  background-color: var(--header-bg); 
  padding: 30px; 
  border-radius: 8px; 
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5); 
  max-width: 700px; 
  position: relative; 
  border: 1px solid var(--border-color); 
  max-height: 80vh; 
  overflow-y: auto; 
}

.help-modal h3 { color: white; }
.close-button { color: var(--text-muted); font-size: 28px; font-weight: bold; background: none; border: none; position: absolute; top: 10px; right: 15px; cursor: pointer;}
.close-button:hover { color: white; }

input[type="range"] {
  -webkit-appearance: none !important;
  appearance: none !important;
  width: 100% !important;
  height: 8px !important;
  background: rgba(0, 0, 0, 0.3) !important;
  border-radius: 5px !important;
  outline: none !important;
  margin-bottom: 15px;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none !important;
  appearance: none !important;
  width: 20px !important;
  height: 20px !important;
  background: var(--accent-color) !important;
  cursor: pointer !important;
  border-radius: 50% !important;
  border: 2px solid white !important;
  box-shadow: 0 0 5px rgba(0, 122, 194, 0.5) !important;
}

input[type="range"]::-moz-range-thumb {
  width: 20px !important;
  height: 20px !important;
  background: var(--accent-color) !important;
  cursor: pointer !important;
  border-radius: 50% !important;
  border: 2px solid white !important;
  box-shadow: 0 0 5px rgba(0, 122, 194, 0.5) !important;
}

.panel::-webkit-scrollbar,
#symbology-controls-container::-webkit-scrollbar,
.help-modal::-webkit-scrollbar { 
  width: 8px;
}
.panel::-webkit-scrollbar-track,
#symbology-controls-container::-webkit-scrollbar-track,
.help-modal::-webkit-scrollbar-track { 
  background: transparent;
}
.panel::-webkit-scrollbar-thumb,
#symbology-controls-container::-webkit-scrollbar-thumb,
.help-modal::-webkit-scrollbar-thumb { 
  background-color: var(--text-muted);
  border-radius: 10px;
  border: 2px solid transparent;
  background-clip: content-box;
}
.panel::-webkit-scrollbar-thumb:hover,
#symbology-controls-container::-webkit-scrollbar-thumb:hover,
.help-modal::-webkit-scrollbar-thumb:hover { 
  background-color: var(--accent-color);
}

#method-buttons-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
    margin-bottom: 20px;
}

.method-btn {
    width: 100%; 
    padding: 10px; 
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-color); 
    border: 1px solid var(--border-color); 
    border-radius: 6px;
    font-size: 14px; 
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s;
    text-align: left;
}

.method-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-color);
}

.secondary-btn {
    width: 100%; 
    padding: 10px; 
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-muted); 
    border: none; 
    border-radius: 6px;
    font-size: 16px; 
    cursor: pointer;
    transition: background-color 0.2s;
}

.secondary-btn:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.method-name {
    color: #FFD54F; 
    font-size: 0.9em;
    font-style: italic;
}

.help-modal code {
    background-color: rgba(0, 0, 0, 0.3);
    padding: 2px 5px;
    border-radius: 4px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9em;
    color: #f0f0f0;
    word-break: break-all;
    cursor: pointer; 
    transition: background-color 0.2s; 
}

.help-modal code:hover {
    background-color: rgba(80, 80, 80, 0.5); 
}

#elevationPanel {
    display: none; 
}

.elevation-option {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

.elevation-option input[type="radio"] {
    margin-right: 10px;
    width: auto; 
}

.elevation-option label {
    margin-bottom: 0; 
    font-size: 15px;
    color: var(--text-color);
}

#elevationUrlInput {
    margin-top: 5px;
}

#elevationUrlInput:disabled {
    background-color: rgba(0, 0, 0, 0.4);
    opacity: 0.5;
    cursor: not-allowed;
}

.primary-btn {
    width: 100%;
    padding: 10px;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.2s;
    margin-top: 10px;
}
.primary-btn:hover {
    background-color: #0099f7;
}

.context-method-name {
    color: #4fc3f7;
    font-size: 0.9em;
    font-style: italic;
}