body {
    margin: 0;
    background-color: black;
    font-family: sans-serif;
    display: flex;
    height: 100vh;
    height: 100dvh;
    overflow: hidden;
}

#sidebar-wrapper {
    display: flex;
    flex-direction: row;
}

#sidebar {
    position: relative;
    width: 33vw;
    min-width: 260px;
    background: rgba(20, 20, 20, 0.95);
    color: #eee;
    box-sizing: border-box;
    border-right: 1px solid #333;
    display: flex;
    flex-direction: column;
    gap: 0;
}

/* Collapsed state: only show the button, no panel visuals */
#sidebar-wrapper.collapsed #sidebar {
    width: auto;
    height: auto;
    padding: 0;
    background: transparent;
    border: none;
    overflow: visible;
}

#sidebar-wrapper.collapsed #controlsBody,
#sidebar-wrapper.collapsed .sidebar-header h2,
#sidebar-wrapper.collapsed .control-row,
#sidebar-wrapper.collapsed #sidebar-footer {
    display: none;
}

#sidebar-wrapper.collapsed {
    position: absolute;
    left: 0;
    top: 0;
    z-index: 20;
}

#sidebar-resizer {
    width: 6px;
    cursor: col-resize;
    background: linear-gradient(to right, rgba(80,80,80,0.6), rgba(140,140,140,0.8));
}

#sidebar-wrapper.collapsed #sidebar-resizer {
    display: none;
}

.sidebar-header {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 8px 8px 8px 8px;
    border-bottom: 1px solid #444;
}

#sidebar-wrapper.collapsed .sidebar-header {
    border-bottom: none;
    padding-bottom: 0;
}

.sidebar-header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.sidebar-header h2 {
    margin: 0;
    font-size: 1.35rem;
    font-weight: 600;
    color: #fff;
}


.header-panel {
    padding-top: 2px;
}

.header-panel-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 4px;
}

.header-panel-row-load {
    flex-wrap: nowrap;
}

.header-panel-row-load select {
    flex: 1;
    min-width: 0;
}

.header-panel-or-inline {
    font-size: 0.8rem;
    color: #888;
    white-space: nowrap;
}

.header-panel-row label {
    font-size: 0.85rem;
    color: #aaa;
    white-space: nowrap;
}

.header-panel-row input[type="text"] {
    flex: 1;
    min-width: 0;
}


#toggleSidebar {
    background: #333;
    color: #eee;
    border: 1px solid #555;
    border-radius: 3px;
    width: 28px;
    height: 24px;
    cursor: pointer;
    padding: 0;
}

#sidebar-wrapper.collapsed #toggleSidebar {
    width: 28px;
    height: 24px;
    border-radius: 3px;
    border-color: #555;
    margin: 8px;
}

#viewport {
    flex: 1;
    position: relative;
    overflow: hidden;
}

#viewport canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.control-row {
    display: flex;
    gap: 10px;
}

.control-group,
.control-group-inline {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
    min-width: 0; /* allow children (like editor) to shrink to panel width */
}

.control-group label,
.control-group-inline label {
    font-size: 0.85rem;
    color: #aaa;
}

.control-group input[type="number"],
.control-group-inline input[type="number"],
.header-panel-row input[type="number"] {
    background: #333;
    border: 1px solid #444;
    color: white;
    padding: 4px 6px;
    border-radius: 4px;
    font-size: 0.85rem;
}

.slider-container {
    display: flex;
    align-items: center;
    gap: 8px;
}

.slider-container input[type="range"] {
    flex: 1;
    min-width: 0;
}

.slider-number {
    width: 60px;
}

.param-min,
.param-max {
    max-width: 70px;
}

.param-slider-group {
    flex: 3;
}

.param-slider-group input[type="range"] {
    margin-top: 20px;
}

.param-step-group {
    max-width: 120px;
}

.param-time-group {
    max-width: 120px;
}

.param-play-group button {
    max-width: 60px;
    padding: 4px 6px;
    margin-left: 8px;
    margin-top: 15px;
}

.control-group input[type="text"],
.control-group-inline input[type="text"],
.header-panel-row input[type="text"] {
    background: #333;
    border: 1px solid #444;
    color: white;
    padding: 4px 6px;
    border-radius: 4px;
    font-size: 0.85rem;
}

.control-group button,
.control-group-inline button,
.footer-buttons-grid button,
.header-panel-row button {
    background: #444;
    color: #eee;
    border: 1px solid #666;
    border-radius: 4px;
    padding: 6px 8px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: background 0.1s ease, transform 0.05s ease, box-shadow 0.05s ease;
}

.control-group button:hover,
.control-group-inline button:hover,
.footer-buttons-grid button:hover,
.header-panel-row button:hover {
    background: #555;
}

.control-group button:active,
.control-group-inline button:active,
.footer-buttons-grid button:active,
.header-panel-row button:active {
    background: #666;
    transform: translateY(1px);
    box-shadow: 0 0 0 transparent;
}

#applySurface {
    background: #444;
    border-color: #666;
    color: #eee;
    font-size: 0.95rem;
}

#applySurface:not(:disabled) {
    background: #1d7a32;
    border-color: #2bbf5c;
    color: #fff;
}

#applySurface:hover:not(:disabled) {
    background: #249942;
}

#applySurface:active:not(:disabled) {
    background: #1b6c2d;
}

#applySurface:disabled,
#revertSurface:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

#applySurface:disabled:hover,
#revertSurface:disabled:hover {
    background: #444;
}

#revertSurface {
    font-size: 0.95rem;
}

#surfaceEditor {
    display: block;
    width: 100%;
    max-width: 100%;
    min-height: 140px;
    background: #111;
    border: 1px solid #444;
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.8rem;
    padding: 4px 6px;
    white-space: pre;
    overflow-x: auto;
    overflow-y: visible;
    box-sizing: border-box;
}

.CodeMirror {
    height: auto;
    border: 1px solid #444;
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.8rem;
}

.CodeMirror-scroll {
    max-height: none;
    height: auto;
    overflow-y: visible;
    overflow-x: auto;
}


.section {
    margin-bottom: 8px;
}

.section-header {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 0;
    cursor: pointer;
    user-select: none;
}

.section-header:hover {
    background: rgba(60, 60, 60, 0.15);
}

.section-header-static {
    cursor: default;
}

.section-header-static:hover {
    background: transparent;
}

.section-caret {
    display: inline-block;
    width: 14px;
}

.section-title {
    font-size: 1rem;
    font-weight: 600;
    color: #eee;
}

.section-body {
    padding: 4px 0 0 0;
}

.section-divider {
    border: 0;
    border-top: 1px solid #444;
    margin: 8px 0 12px 0;
}


.control-group select,
.control-group-inline select,
.header-panel-row select {
    background: #333;
    border: 1px solid #444;
    color: white;
    padding: 4px 6px;
    border-radius: 4px;
    font-size: 0.85rem;
}

#controlsBody {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 16px 16px 20px 16px;
}

#sidebar-footer {
    padding: 8px 8px 8px 8px;
    border-top: 1px solid #444;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-buttons-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.footer-buttons-grid button {
    width: 100%;
    font-size: 0.95rem;
}

.footer-cancel {
    grid-column: 1 / -1;
}

.sidebar-footer-panel {
    margin-top: 2px;
}

.floating-button {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(32, 32, 32, 0.9);
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    border: 1px solid #666;
    cursor: pointer;
    z-index: 10;
    color: white;
}

.floating-button:hover {
    background: rgba(64, 64, 64, 0.95);
}

#paramExtras {
    margin-top: 10px;
}

/* Global params spacer */
#globalParamControls {
    margin-bottom: 12px;
}

.param-section {
    position: relative;
    border: 1px solid #333;
    border-radius: 4px;
    margin-bottom: 8px;
    background: rgba(10, 10, 10, 0.7);
    padding: 4px 6px 6px 6px;
}

.param-remove {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 20px;
    height: 20px;
    padding: 0;
    border-radius: 50%;
    background: #333;
    color: #ccc;
    border: 1px solid #555;
    font-size: 12px;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.param-remove:hover {
    background: #555;
    color: #fff;
}

.surface-error {
    margin-top: 6px;
    color: #ff6b6b;
    font-size: 0.8rem;
    white-space: pre-wrap;
}

.surface-error::before {
    content: 'ERROR:';
    display: block;
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 2px;
}

.outputs-note {
    margin-top: 6px;
    font-size: 0.8rem;
    color: #aaa;
}

.outputs-row {
    flex-direction: row;
    align-items: center;
    gap: 8px;
}

.learn-more-content p {
    margin: 4px 0;
    font-size: 0.9rem;
    color: #ccc;
}

.learn-more-content a {
    color: #58a6ff;
    text-decoration: none;
}

.learn-more-content a:hover {
    text-decoration: underline;
}