/* === 3D App Base === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --glass-bg: rgba(255, 255, 255, 0.92);
    --glass-blur: blur(12px);
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    --accent: #1565c0;
    --border: #e5e7eb;
    --radius: 10px;
    --shadow: 0 4px 16px rgba(0,0,0,0.15);
}

html, body {
    height: 100%;
    margin: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 13px;
    overflow: hidden;
}

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

/* Hide Cesium default UI elements we don't need */
.cesium-viewer-toolbar,
.cesium-viewer-animationContainer,
.cesium-viewer-timelineContainer,
.cesium-viewer-bottom,
.cesium-viewer-fullscreenContainer {
    display: none !important;
}

/* === UI Overlay === */
#ui-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 10;
}

#ui-overlay > * {
    pointer-events: auto;
}

/* === Title Bar === */
#title-bar {
    position: absolute;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border-radius: 20px;
    box-shadow: var(--shadow);
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
}

.app-icon-3d {
    width: 22px;
    height: 22px;
    color: var(--accent);
}

.title-area {
    font-weight: 400;
    color: var(--text-secondary);
    border-left: 1px solid var(--border);
    padding-left: 8px;
    font-size: 13px;
    position: relative;
}

.location-switcher {
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: color 0.15s;
}
.location-switcher:hover {
    color: var(--accent);
}

.switcher-chevron {
    font-size: 9px;
    opacity: 0.5;
    transition: opacity 0.15s;
}
.location-switcher:hover .switcher-chevron {
    opacity: 1;
}

.location-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    min-width: 160px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    z-index: 100;
}

.location-option {
    display: block;
    padding: 10px 16px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    text-decoration: none;
    transition: background 0.12s;
}
.location-option:hover {
    background: rgba(21, 101, 192, 0.08);
}
.location-option.active {
    color: var(--accent);
    font-weight: 600;
}

/* === Project Panel === */
#project-panel {
    position: absolute;
    top: 70px;
    left: 16px;
    width: 260px;
    max-height: calc(100vh - 150px);
    overflow-y: auto;
    padding: 14px 16px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

#project-panel h3 {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
    margin-bottom: 10px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-toggle-arrow {
    font-size: 14px;
    transition: transform 0.2s ease;
}

#project-panel.collapsed .panel-toggle-arrow {
    transform: rotate(-90deg);
}

#project-panel.collapsed #project-list,
#project-panel.collapsed .status-text {
    display: none;
}

#project-panel.collapsed {
    padding: 10px 14px;
}

#project-panel.collapsed h3 {
    margin-bottom: 0;
}

.project-item {
    padding: 8px 0;
    border-bottom: 1px solid #f3f4f6;
}
.project-item:last-child {
    border-bottom: none;
}

.project-name {
    font-weight: 600;
    font-size: 13px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.project-name .status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.project-detail {
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: 2px;
    padding-left: 14px;
}

.status-text {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 8px;
}

/* === Camera Controls === */
#camera-controls {
    position: absolute;
    top: 70px;
    right: 16px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.cam-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s ease;
}

.cam-btn:hover {
    background: #fff;
    box-shadow: 0 3px 12px rgba(0,0,0,0.15);
}

.cam-btn.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

/* === Legend === */
#legend-panel {
    position: absolute;
    bottom: 80px;
    right: 16px;
    padding: 12px 16px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

#legend-panel h4 {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 2px 0;
    font-size: 12px;
    color: var(--text-secondary);
}

.legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.legend-line {
    width: 16px;
    height: 3px;
    border-radius: 1px;
    flex-shrink: 0;
}

.legend-sep {
    height: 1px;
    background: var(--border);
    margin: 6px 0;
}

/* === Preset Bar === */
#preset-bar {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 6px;
}

.preset-3d-btn {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 8px 16px;
    border: none;
    border-radius: 20px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    box-shadow: 0 2px 10px rgba(0,0,0,0.12);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s ease;
}

.preset-3d-btn:hover {
    background: #fff;
    box-shadow: 0 3px 14px rgba(0,0,0,0.18);
}

.preset-3d-btn.active {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 3px 14px rgba(21,101,192,0.3);
}

.preset-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    border: 1.5px solid rgba(0,0,0,0.15);
}
.preset-dot--high { background: #ef5350; }
.preset-dot--medium { background: #ff9800; }
.preset-dot--low { background: #66bb6a; }

.preset-3d-btn.active .preset-dot {
    border-color: rgba(255,255,255,0.4);
}

/* === Eye-level hint === */
#eye-level-hint {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 12px 24px;
    background: rgba(0,0,0,0.75);
    color: #fff;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
}

.hidden {
    display: none !important;
}

/* === Loading overlay === */
#loading-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 16px 28px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

/* === Responsive === */
@media (max-width: 768px) {
    #title-bar {
        top: 8px;
        padding: 6px 14px;
        font-size: 13px;
    }
    #project-panel {
        width: 180px;
        max-height: 35vh;
        padding: 8px 10px;
        top: 55px;
        left: 8px;
        font-size: 11px;
    }
    #project-panel h3 {
        font-size: 9px;
        margin-bottom: 6px;
    }
    .project-name {
        font-size: 11px;
    }
    .project-detail {
        font-size: 10px;
    }
    #legend-panel {
        display: none;
    }
    #preset-bar {
        bottom: 12px;
    }
    .preset-3d-btn {
        padding: 6px 12px;
        font-size: 12px;
    }
}