/**
 * Overlay panels: manifold selector, parameters panel, classifier panel
 */

/* Canvas Container */
#canvas-container {
    flex: 1;
    position: relative;
    background: var(--bg-canvas);
    min-width: 0;
    min-height: 0;
    max-width: 100%;
    height: 100vh;
    overflow: hidden;
    width: 100%;
}

#canvas {
    width: 100%;
    height: 100%;
    max-width: 100%;
    max-height: 100%;
    display: block;
    object-fit: contain;
}

#canvas.picking-mode {
    cursor: crosshair;
}

#loading {
    position: absolute;
    bottom: 20px;
    right: 20px;
    background: var(--bg-loading);
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 11px;
    color: var(--text-loading);
    pointer-events: none;
    opacity: 0.7;
}

body[data-theme="light"] #loading {
    border: 1px solid var(--border-primary);
    opacity: 0.9;
}

/* Manifold Selector */
#manifold-selector {
    position: absolute;
    top: 20px;
    left: 20px;
    background: var(--overlay-panel);
    border-radius: 8px;
    border: 1px solid var(--border-primary);
    backdrop-filter: blur(10px);
    min-width: 300px;
    max-width: 400px;
    z-index: 100;
    box-shadow: 0 4px 12px var(--shadow-heavy);
    overflow: hidden;
}

.manifold-current {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px;
    cursor: pointer;
    user-select: none;
    transition: background 0.2s ease;
}

.manifold-current:hover,
.manifold-current.active {
    background: var(--bg-panel-header);
}

body[data-theme="dark"] .manifold-current:hover,
body[data-theme="dark"] .manifold-current.active {
    background: rgba(52, 52, 52, 0.95);
}

body[data-theme="light"] .manifold-current:hover,
body[data-theme="light"] .manifold-current.active {
    background: rgba(245, 245, 245, 0.95);
}

.manifold-info {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
}

.manifold-label {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 600;
}

#current-manifold-name {
    font-size: 15px;
    color: var(--accent-primary);
    font-weight: 600;
}

.dropdown-arrow {
    color: var(--text-muted);
    font-size: 10px;
    transition: transform 0.2s ease;
    margin-left: 10px;
}

.manifold-current.active .dropdown-arrow {
    transform: rotate(180deg);
}

.manifold-dropdown-list {
    max-height: 400px;
    overflow-y: auto;
    overflow-x: hidden;
    background: var(--overlay-dropdown);
    border-top: 1px solid var(--border-primary);
    opacity: 1;
    transform: scaleY(1);
    transform-origin: top;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.manifold-dropdown-list.hidden {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transform: scaleY(0.95);
    pointer-events: none;
    border-top: none;
}

/* Custom scrollbar for dropdown list */
.manifold-dropdown-list::-webkit-scrollbar {
    width: 8px;
}

.manifold-dropdown-list::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
}

.manifold-dropdown-list::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 4px;
}

.manifold-dropdown-list::-webkit-scrollbar-thumb:hover {
    background: var(--scrollbar-thumb-hover);
}

.manifold-option {
    padding: 12px 15px;
    cursor: pointer;
    transition: background 0.2s ease;
    border-bottom: 1px solid var(--border-divider);
}

.manifold-option:last-child {
    border-bottom: none;
}

.manifold-option:hover {
    background: rgba(74, 158, 255, 0.1);
}

.manifold-option.selected {
    background: rgba(74, 158, 255, 0.15);
}

.manifold-option-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.manifold-option-description {
    font-size: 12px;
    color: var(--text-tertiary);
    line-height: 1.4;
}

body[data-theme="light"] .manifold-option-description {
    color: #777777;
}

/* Manifold Parameters Panel */
.manifold-params-panel {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--overlay-panel);
    border-radius: 8px;
    border: 1px solid var(--border-primary);
    backdrop-filter: blur(10px);
    min-width: 250px;
    max-width: 350px;
    z-index: 100;
    box-shadow: 0 4px 12px var(--shadow-heavy);
    overflow: hidden;
}

.manifold-params-panel.hidden {
    display: none;
}

.params-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 15px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    background: var(--bg-panel-header);
    border-bottom: 1px solid var(--border-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    user-select: none;
    transition: background 0.2s ease;
}

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

body[data-theme="dark"] .params-header:hover {
    background: rgba(32, 32, 32, 0.98);
}

body[data-theme="light"] .params-header:hover {
    background: rgba(238, 238, 238, 0.98);
}

.params-toggle {
    font-size: 10px;
    color: var(--text-muted);
    transition: transform 0.2s ease;
}

.manifold-params-panel.collapsed .params-toggle {
    transform: rotate(-90deg);
}

.manifold-params-panel.collapsed #manifold-params-container {
    display: none;
}

#manifold-params-container {
    padding: 15px;
}

.param-control {
    margin-bottom: 15px;
}

.param-control:last-child {
    margin-bottom: 0;
}

.param-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
    font-size: 12px;
    color: var(--text-secondary);
}

body[data-theme="light"] .param-label {
    color: #555555;
}

.param-name {
    font-weight: 500;
}

.param-value {
    color: var(--accent-primary);
    font-weight: 600;
    font-family: monospace;
}

.param-slider {
    width: 100%;
    height: 4px;
    background: var(--border-primary);
    outline: none;
    border-radius: 2px;
    -webkit-appearance: none;
}

.param-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    background: var(--accent-primary);
    cursor: pointer;
    border-radius: 50%;
    border: 2px solid #ffffff;
    box-shadow: 0 2px 4px var(--shadow-medium);
}

.param-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: var(--accent-primary);
    cursor: pointer;
    border-radius: 50%;
    border: 2px solid #ffffff;
    box-shadow: 0 2px 4px var(--shadow-medium);
}

.param-slider::-webkit-slider-thumb:hover {
    background: #6ab0ff;
    transform: scale(1.1);
}

.param-slider::-moz-range-thumb:hover {
    background: #6ab0ff;
    transform: scale(1.1);
}

/* Classifier 2D Visualization Panel */
#classifier-panel {
    position: absolute;
    bottom: 20px;
    right: 20px;
    width: 350px;
    height: 350px;
    background: var(--overlay-panel);
    border: 1px solid var(--border-primary);
    border-radius: 8px;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 12px var(--shadow-heavy);
    z-index: 100;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

#classifier-panel.hidden {
    display: none;
}

.classifier-header {
    padding: 12px 15px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-primary);
}

.classifier-header h3 {
    margin: 0;
    font-size: 16px;
    color: var(--text-heading);
    font-weight: 600;
}

.classifier-header p {
    margin: 4px 0 0 0;
    font-size: 12px;
    color: var(--text-secondary);
}

#classifier-canvas {
    flex: 1;
    width: 100%;
    height: 100%;
    display: block;
}