:root {
    --bg: #050505;
    /* Deep pure obsidian black */
    --surface-1: #0a0a0a;
    /* Deep carbon black workspace panel background */
    --surface-2: #101010;
    /* Deeper card panel surface background */
    --surface-3: #161616;
    /* Clean hover surface state */
    --border: #171717;
    /* Very clean, low-profile dark gray border outline */
    --border-mid: #282828;
    /* Medium border highlight */
    --text-1: #f5f5f5;
    /* Premium ultra-clean light text */
    --text-2: #a8a8a8;
    /* Secondary neutral gray text */
    --text-3: #5e5e5e;
    /* Dimmed gray text */
    --accent: #f7ff9e;
    /* Primary accent: soft lime-cream yellow */
    --accent-dim: #c5cd7a;
    /* Dimmed accent: soft pale-lime */
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

.hidden {
    display: none !important;
}

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text-1);
    overflow: hidden;
    font-size: 12px;
    line-height: 1.4;
    -webkit-font-smoothing: antialiased;
}

#app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    width: 100vw;
    background: var(--bg);
}

#layout-root {
    display: flex;
    flex: 1;
    overflow: hidden;
    position: relative;
}

.layout-split {
    display: flex;
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.layout-split-horizontal {
    flex-direction: row;
}

.layout-split-vertical {
    flex-direction: column;
}

.layout-pane {
    position: relative;
    overflow: hidden;
    display: flex;
}

.layout-resizer {
    position: relative;
    z-index: 100;
    background: transparent;
    flex-shrink: 0;
}

.layout-split-horizontal>.layout-resizer {
    width: 8px;
    cursor: col-resize;
    margin: 0 -4px;
}

.layout-split-vertical>.layout-resizer {
    height: 8px;
    cursor: row-resize;
    margin: -4px 0;
}

.layout-split-horizontal>.layout-resizer::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 25%;
    bottom: 25%;
    width: 1px;
    background: transparent;
    transform: translateX(-50%);
    transition: background 0.15s;
    border-radius: 1px;
}

.layout-split-vertical>.layout-resizer::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 25%;
    right: 25%;
    height: 1px;
    background: transparent;
    transform: translateY(-50%);
    transition: background 0.15s;
    border-radius: 1px;
}

.layout-resizer:hover::before,
.layout-resizer:active::before {
    background: var(--border-mid);
}

.layout-pane {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: 0;
    box-sizing: border-box;
}

#layout-root {
    padding: 1px;
    background: var(--bg);
    /* Darkest background behind panels */
}

.layout-panel-container {
    background: var(--surface-1);
    border: 1px solid var(--border);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    flex: 1;
    margin: 1px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 0 12px rgba(0, 0, 0, 0.3);
}

.layout-panel-header {
    position: absolute;
    top: 6px;
    left: 6px;
    right: 6px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 100;
    pointer-events: none;
    /* Let clicks pass through empty space */
}

.layout-panel-type-wrapper {
    display: flex;
    align-items: center;
    background: var(--surface-3);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 3px 6px;
    gap: 0;
    pointer-events: auto;
    /* Re-enable clicks */
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: gap 0.2s, background 0.2s;
    cursor: pointer;
}

.layout-panel-type-wrapper:hover {
    gap: 6px;
    background: var(--surface-2);
}

.layout-panel-icon {
    display: flex;
    align-items: center;
    color: var(--text-2);
    transition: color 0.2s;
}

.layout-panel-type-wrapper:hover .layout-panel-icon {
    color: var(--accent);
}

.layout-panel-type-select {
    background: transparent;
    color: var(--text-1);
    border: none;
    font-size: 11px;
    outline: none;
    cursor: pointer;
    font-family: inherit;
    padding: 0;
    max-width: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-width 0.2s, opacity 0.2s;
}

.layout-panel-type-wrapper:hover .layout-panel-type-select {
    max-width: 100px;
    opacity: 1;
}

.layout-panel-controls {
    display: flex;
    background: var(--surface-3);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 2px;
    pointer-events: auto;
    /* Re-enable clicks */
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    opacity: 0;
    transition: opacity 0.2s;
}

.layout-panel-container:hover .layout-panel-controls {
    opacity: 1;
}

.layout-panel-controls button {
    background: transparent;
    border: none;
    color: var(--text-3);
    cursor: pointer;
    margin: 0 2px;
    padding: 2px 6px;
    font-size: 11px;
    border-radius: 2px;
    transition: color 0.1s, background 0.1s;
}

.layout-panel-controls button:hover {
    color: var(--text-1);
    background: var(--surface-2);
}

.layout-panel-controls button:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.layout-panel-body {
    flex: 1;
    position: relative;
    overflow: hidden;
    display: flex;
}

/* Ensure node canvas fills its panel */
canvas[id^="node-canvas-"] {
    width: 100%;
    height: 100%;
    cursor: grab;
}

canvas[id^="node-canvas-"]:active {
    cursor: grabbing;
}

/* Attribute Editor */
#attribute-editor.hidden {
    display: none !important;
}

#attribute-editor.collapsed #attributes-content {
    display: none !important;
}

#attribute-editor.collapsed #attribute-collapse-icon {
    transform: rotate(-90deg);
}

/* Panel Header */
.panel-header {
    padding: 7px 12px;
    background: transparent;
    border-bottom: 1px solid var(--border);
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-3);
}

.panel-header--interactive {
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
}

.panel-header--interactive:hover {
    color: var(--text-2);
}

.collapse-icon {
    font-size: 9px;
    transition: transform 0.2s;
    color: var(--text-3);
}

/* Attributes Panel Content */
#attributes-content {
    padding: 8px;
    overflow-y: auto;
    flex: 1;
}

.attr-group {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 3px;
    gap: 6px;
    width: 100%;
}

.attr-group label {
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-3);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.attr-group>div:first-child {
    flex: 1;
    min-width: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 4px;
}

.attr-group label.scrubbable {
    cursor: ew-resize;
    user-select: none;
    color: var(--text-2);
}

.attr-group label.scrubbable:hover {
    color: var(--text-1);
}

/* Range slider thumb & track custom styles */
.attr-group input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    background: var(--surface-3);
    height: 4px;
    border-radius: 2px;
    outline: none;
    margin: 0;
    padding: 0;
    cursor: pointer;
}

.attr-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #3b82f6;
    cursor: pointer;
    transition: transform 0.1s ease, background-color 0.1s ease;
}

.attr-group input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    background: #60a5fa;
}

.attr-group input[type="range"]::-moz-range-thumb {
    width: 10px;
    height: 10px;
    border: none;
    border-radius: 50%;
    background: #3b82f6;
    cursor: pointer;
    transition: transform 0.1s ease, background-color 0.1s ease;
}

.attr-group input[type="range"]::-moz-range-thumb:hover {
    transform: scale(1.2);
    background: #60a5fa;
}

/* Inputs */
input[type="text"],
input[type="number"],
select {
    background: var(--surface-2);
    border: 1px solid var(--border);
    color: var(--text-1);
    padding: 3px 6px;
    border-radius: 2px;
    font-family: 'SF Mono', 'Roboto Mono', monospace;
    font-size: 10px;
    width: 86px;
    text-align: left;
    outline: none;
    transition: border-color 0.1s;
    appearance: none;
}

select {
    background-image: url('data:image/svg+xml;utf8,<svg fill="%23555" height="24" viewBox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"><path d="M7 10l5 5 5-5z"/></svg>');
    background-repeat: no-repeat;
    background-position: calc(100% - 2px) center;
    background-size: 12px;
    padding-right: 16px;
    text-align: left;
}

.attr-group input:focus,
.attr-group select:focus {
    border-color: var(--border-mid);
}

.attr-group input[type=number]::-webkit-inner-spin-button,
.attr-group input[type=number]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.attr-group input[type=number] {
    -moz-appearance: textfield;
}

.attr-group input[type="color"] {
    padding: 2px;
    height: 26px;
    width: 100%;
    cursor: pointer;
}

.custom-select {
    background: var(--surface-2);
    border: 1px solid var(--border);
    color: var(--text-1);
    padding: 3px 6px;
    border-radius: 2px;
    font-family: 'SF Mono', 'Roboto Mono', monospace;
    font-size: 10px;
    width: 86px;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: border-color 0.1s;
}

.custom-select:hover {
    border-color: var(--border-mid);
}

.custom-select-arrow {
    color: var(--text-3);
    font-size: 9px;
}

/* Viewport */
#viewport {
    flex: 1;
    background: #060606;
    /* 100% mathematical grayscale deep focus black */
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    min-width: 200px;
    position: relative;
}

#render-canvas {
    border: 1px solid var(--border);
    /* Elegant, precise edge alignment */
    background-image:
        linear-gradient(45deg, var(--surface-2) 25%, transparent 25%),
        linear-gradient(-45deg, var(--surface-2) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, var(--surface-2) 75%),
        linear-gradient(-45deg, transparent 75%, var(--surface-2) 75%);
    background-size: 16px 16px;
    background-position: 0 0, 0 8px, 8px -8px, -8px 0px;
    background-color: var(--surface-1);
}

/* Context Menu */
#context-menu {
    position: absolute;
    width: 200px;
    background: var(--surface-1);
    border: 1px solid var(--border);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

#context-menu.hidden {
    display: none;
}

#context-menu.context-menu-open {
    display: flex;
    flex-direction: column;
    width: 340px;
}

#context-search {
    width: 100%;
    background: var(--surface-2);
    border: none;
    border-bottom: 1px solid var(--border);
    color: var(--text-1);
    padding: 7px 10px;
    font-family: 'Inter', sans-serif;
    font-size: 11px;
    outline: none;
    text-align: left;
}

.context-menu-body {
    display: flex;
    flex-direction: row;
    max-height: 280px;
    overflow: hidden;
}

.menu-left-panel {
    flex: 1;
    border-right: 1px solid var(--border);
    background: var(--surface-1);
    overflow-y: auto;
}

.menu-right-panel {
    flex: 1.5;
    background: var(--surface-2);
    overflow-y: auto;
}

.menu-category-item {
    padding: 6px 10px;
    cursor: pointer;
    font-size: 10px;
    color: var(--text-3);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: color 0.1s, background 0.1s;
}

.menu-category-item.active,
.menu-category-item:hover {
    color: var(--text-1);
    background: var(--surface-3);
}

.menu-categories {
    max-height: 250px;
    overflow-y: auto;
}

.menu-category-title {
    padding: 5px 10px;
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--text-3);
    background: var(--surface-1);
    font-weight: 600;
}

.menu-item {
    padding: 5px 12px;
    cursor: pointer;
    color: var(--text-2);
    font-size: 11px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.1s, color 0.1s;
}

.menu-item:hover {
    background: var(--surface-3);
    color: var(--text-1);
}

/* Top menu */
#app-header {
    height: 30px;
    background: var(--bg);
    border-bottom: none;
    display: flex;
    align-items: center;
    z-index: 1000;
    color: var(--text-1);
    font-family: 'Inter', sans-serif;
}

.header-logo {
    height: 14px;
    width: 14px;
    margin: 0 8px 0 10px;
    object-fit: contain;
    flex-shrink: 0;
    opacity: 0.8;
}

.top-menu {
    display: flex;
    gap: 16px;
    margin-left: 10px;
}

.menu-trigger {
    position: relative;
    cursor: pointer;
    padding: 8px 4px;
    font-size: 11px;
    color: var(--text-2);
    transition: color 0.1s;
}

.menu-trigger:hover {
    color: var(--text-1);
}

.menu-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--surface-1);
    border: 1px solid var(--border);
    z-index: 10000;
    min-width: 160px;
    overflow: visible;
}

.menu-trigger.open .menu-dropdown {
    display: block;
}

.menu-action {
    padding: 6px 12px;
    font-size: 11px;
    color: var(--text-2);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: background 0.1s, color 0.1s;
}

.menu-action:hover {
    background: var(--surface-3);
    color: var(--text-1);
}

.menu-action .shortcut {
    color: var(--text-3);
    font-size: 10px;
    font-family: monospace;
}

.menu-action--disabled {
    opacity: 0.3;
    pointer-events: none;
}

.menu-sep {
    height: 1px;
    background: var(--border);
    margin: 3px 0;
}

.menu-item-has-submenu {
    position: relative;
    padding: 6px 12px;
    font-size: 11px;
    color: var(--text-2);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: background 0.1s, color 0.1s;
}

.menu-item-has-submenu:hover {
    background: var(--surface-3);
    color: var(--text-1);
}

.menu-submenu {
    display: none;
    position: absolute;
    top: 0;
    left: 100%;
    background: var(--surface-1);
    border: 1px solid var(--border);
    padding: 4px 0;
    min-width: 160px;
    z-index: 10001;
}

.menu-item-has-submenu:hover .menu-submenu {
    display: block;
}

.submenu-arrow {
    opacity: 0.35;
    pointer-events: none;
}

/* Timeline */
#timeline {
    height: 160px;
    min-height: 100px;
    max-height: 400px;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    overflow: hidden;
}

.timeline-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 4px 16px;
    padding-left: 140px;
    /* Leave space for the floating Layout Panel Selector */
    background: var(--surface-1);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.timeline-toolbar-left,
.timeline-toolbar-right {
    display: flex;
    align-items: center;
    gap: 16px;
    flex: 1;
    /* allow center to stay perfectly centered */
}

.timeline-toolbar-right {
    justify-content: flex-end;
}

.timeline-toolbar-center {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex: 1;
}

/* Transport Buttons */
.transport-btn {
    width: 26px;
    height: 26px;
    border-radius: 4px;
    background-color: transparent;
    border: 1px solid transparent;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.1s, border-color 0.1s;
}

.transport-btn:hover {
    background-color: var(--surface-2);
    border-color: var(--border-mid);
}

.transport-btn:active {
    background-color: var(--surface-3);
}

.transport-btn::before {
    content: '';
    display: block;
    width: 14px;
    height: 14px;
    background-color: var(--text-2);
    -webkit-mask-size: contain;
    -webkit-mask-repeat: no-repeat;
    -webkit-mask-position: center;
    mask-size: contain;
    mask-repeat: no-repeat;
    mask-position: center;
}

.transport-btn:hover::before {
    background-color: var(--text-1);
}

.transport-btn.active {
    background-color: var(--surface-3);
    border-color: var(--border-mid);
}

.transport-btn.active::before {
    background-color: var(--accent);
}

/* Specific Icons */
#btn-rewind::before {
    -webkit-mask-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M11 19V5L2 12l9 7zm11-14l-9 7 9 7V5zM2 5v14h2V5H2z"/></svg>');
    mask-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M11 19V5L2 12l9 7zm11-14l-9 7 9 7V5zM2 5v14h2V5H2z"/></svg>');
}

#btn-play-pause::before {
    -webkit-mask-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M8 5v14l11-7z"/></svg>');
    mask-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M8 5v14l11-7z"/></svg>');
}

#btn-play-pause.playing::before {
    -webkit-mask-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M6 19h4V5H6v14zm8-14v14h4V5h-4z"/></svg>');
    mask-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M6 19h4V5H6v14zm8-14v14h4V5h-4z"/></svg>');
}

#btn-loop::before {
    -webkit-mask-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M12 4V1L8 5l4 4V6c3.31 0 6 2.69 6 6 0 1.01-.25 1.97-.7 2.8l1.46 1.46C19.54 15.03 20 13.57 20 12c0-4.42-3.58-8-8-8zm0 14c-3.31 0-6-2.69-6-6 0-1.01.25-1.97.7-2.8L5.24 7.74C4.46 8.97 4 10.43 4 12c0 4.42 3.58 8 8 8v3l4-4-4-4v3z"/></svg>');
    mask-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M12 4V1L8 5l4 4V6c3.31 0 6 2.69 6 6 0 1.01-.25 1.97-.7 2.8l1.46 1.46C19.54 15.03 20 13.57 20 12c0-4.42-3.58-8-8-8zm0 14c-3.31 0-6-2.69-6-6 0-1.01.25-1.97.7-2.8L5.24 7.74C4.46 8.97 4 10.43 4 12c0 4.42 3.58 8 8 8v3l4-4-4-4v3z"/></svg>');
}

/* Timeline / Speedgraph Toggle Pill */
.timeline-toolbar-right.toggle-pill {
    display: flex;
    align-items: center;
    background: transparent;
    padding: 0;
    gap: 4px;
}

.timeline-toolbar-right.toggle-pill button {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-3);
    padding: 4px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 11px;
    font-weight: normal;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: background-color 0.1s, color 0.1s;
}

.timeline-toolbar-right.toggle-pill button svg {
    opacity: 0.7;
}

.timeline-toolbar-right.toggle-pill button:hover {
    background: var(--surface-2);
    color: var(--text-2);
}

.timeline-toolbar-right.toggle-pill button.active {
    background: var(--surface-3);
    color: var(--text-1);
    border-color: var(--border);
}

.timeline-toolbar-right.toggle-pill button.active svg {
    opacity: 1;
    color: var(--accent);
}

.timeline-time-info {
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: monospace;
    font-size: 11px;
}

.time-box,
.time-input {
    background: var(--surface-2);
    border: 1px solid var(--border);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
    font-size: 11px;
    color: var(--text-2);
}

.time-input {
    width: 60px;
    text-align: right;
}

.time-input:focus {
    outline: none;
    border-color: var(--border-mid);
    color: var(--text-1);
    background: var(--surface-3);
}

.time-box.muted {
    color: var(--text-3);
    background: transparent;
    border-color: transparent;
}

.time-divider {
    color: var(--text-3);
}

.timeline-body {
    flex: 1;
    display: flex;
    overflow: hidden;
    min-height: 0;
}

.tl-labels {
    width: 128px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border);
    background: var(--surface-1);
    overflow-y: auto;
    overflow-x: hidden;
}

.tl-label-empty {
    font-size: 9px;
    color: var(--text-3);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 10px 12px;
}

.tl-label-node {
    font-size: 9px;
    color: var(--text-3);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    height: 20px;
    line-height: 20px;
    padding: 0 10px;
    background: var(--surface-2);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.tl-label-row {
    height: 20px;
    line-height: 20px;
    font-size: 9px;
    color: var(--text-3);
    padding: 0 10px 0 18px;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: flex;
    align-items: center;
    gap: 4px;
}

.tl-label-row .kf-diamond {
    font-size: 8px;
    flex-shrink: 0;
}

.tl-tracks {
    flex: 1;
    position: relative;
    overflow-y: auto;
    overflow-x: scroll;
    background: var(--surface-1);
}

#tl-content {
    position: relative;
    height: 100%;
    width: 100%;
    min-width: 100%;
}

.tl-seek-overlay {
    position: absolute;
    inset: 0;
    cursor: pointer;
    z-index: 1;
}

.tl-ruler {
    height: 18px;
    position: relative;
    border-bottom: 1px solid var(--border);
    background: var(--surface-2);
}

.tl-rows {
    position: relative;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

.tl-track-node-header {
    height: 20px;
    background: var(--surface-2);
    border-bottom: 1px solid var(--border);
}

.tl-track-row {
    height: 20px;
    position: relative;
    border-bottom: 1px solid var(--border);
}

.tl-kf-diamond {
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%) rotate(45deg);
    width: 6px;
    height: 6px;
    background: var(--accent);
    cursor: pointer;
    pointer-events: all;
    z-index: 5;
}

.tl-kf-diamond:hover {
    background: var(--text-1);
}

.tl-kf-diamond.selected {
    background: #fff;
    box-shadow: 0 0 6px #fff, 0 0 12px var(--accent);
    transform: translate(-50%, -50%) rotate(45deg) scale(1.4);
    z-index: 6;
}

.tl-scrubber {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--accent);
    pointer-events: none;
    z-index: 20;
}

.tl-scrubber::before {
    content: '';
    position: absolute;
    top: 0;
    left: -3px;
    width: 7px;
    height: 7px;
    background: var(--accent);
    border-radius: 1px;
}

.tl-ruler-spacer {
    height: 18px;
    border-bottom: 1px solid var(--border);
    background: var(--surface-1);
    flex-shrink: 0;
}

.ruler-mark {
    position: absolute;
    top: 3px;
    transform: translateX(-50%);
    font-family: monospace;
    font-size: 9px;
    color: var(--text-3);
    pointer-events: none;
}

.tl-grid-line {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 1px;
    pointer-events: none;
    z-index: 1;
}

.tl-grid-line.major {
    background: #242424;
}

.tl-grid-line.minor {
    background: #191919;
}

#tl-cursor-line {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--accent);
    pointer-events: none;
    z-index: 10;
}

#tl-cursor-line::after {
    content: attr(data-frame);
    position: absolute;
    bottom: 4px;
    left: 5px;
    font-family: monospace;
    font-size: 9px;
    color: var(--accent);
    background: var(--surface-1);
    padding: 1px 3px;
}

#tl-graph-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: all;
}

#tl-graph-canvas.hidden {
    display: none;
}

.graph-view .tl-labels,
.graph-view .tl-rows {
    display: none;
}

#timeline.graph-view .tl-rows,
#timeline.graph-view .tl-labels,
#timeline.graph-view .tl-ruler {
    display: none;
}

/* Keyframe UI */
.kf-diamond {
    display: inline-block;
    margin-left: 4px;
    color: var(--accent);
    font-size: 10px;
    vertical-align: middle;
}

.kf-strip {
    position: relative;
    height: 10px;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 1px;
    margin-top: 3px;
    overflow: hidden;
}

.kf-dot {
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%) rotate(45deg);
    width: 6px;
    height: 6px;
    background: var(--accent);
    cursor: pointer;
}

.kf-dot:hover {
    background: var(--text-1);
}

.kf-toggle-btn {
    display: inline-block;
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--border-mid);
    transition: color 0.1s;
    user-select: none;
    padding: 0 3px;
}

.kf-toggle-btn:hover {
    color: var(--text-3);
}

.kf-toggle-btn.has-keys {
    color: var(--text-3);
}

.kf-toggle-btn.has-keys:hover {
    color: var(--text-1);
}

.kf-toggle-btn.active {
    color: var(--accent);
}

#kf-context-menu {
    position: fixed;
    background: var(--surface-1);
    border: 1px solid var(--border);
    z-index: 1000;
    padding: 3px 0;
    font-size: 11px;
    cursor: pointer;
    min-width: 140px;
}

.kf-context-item {
    padding: 6px 14px;
    color: var(--text-2);
    transition: background 0.1s, color 0.1s;
}

.kf-context-item:hover {
    background: var(--surface-3);
    color: var(--text-1);
}

.kf-menu-item {
    padding: 6px 12px;
    color: var(--text-2);
    cursor: pointer;
    font-size: 11px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.1s, color 0.1s;
}

.kf-menu-item:hover {
    background: var(--surface-3);
    color: var(--text-1);
}

.kf-menu-item--remove {
    color: var(--text-3);
}

.kf-menu-item--remove:hover {
    color: #e05555;
    background: #1a0c0c;
}

.kf-menu-sep {
    height: 1px;
    background: var(--border);
    margin: 3px 0;
}

.kf-context-menu {
    position: fixed;
    z-index: 9999;
    min-width: 200px;
    background: var(--surface-1);
    border: 1px solid var(--border);
    padding: 3px 0;
    font-size: 11px;
}

/* FPS Bar */
#fps-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--surface-1);
    color: var(--text-3);
    font-family: monospace;
    font-size: 10px;
    padding: 3px 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border);
    pointer-events: none;
}

#fps-text {
    text-transform: uppercase;
}

#fps-bar>* {
    pointer-events: auto;
}

.fps-bar-left {
    display: flex;
    align-items: center;
    gap: 5px;
}

#viewport-resolution {
    background: transparent;
    color: var(--text-3);
    border: 1px solid var(--border);
    font-size: 10px;
    padding: 1px 4px;
    cursor: pointer;
    font-family: monospace;
    transition: color 0.1s;
}

#viewport-resolution:hover {
    color: var(--text-2);
    border-color: var(--border-mid);
}

/* Attr helpers */
.attr-label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0;
}

.attr-label-row label {
    margin-bottom: 0;
}

.attr-color-row {
    display: flex;
    gap: 6px;
    align-items: center;
}

.attr-color-swatch {
    width: 26px;
    height: 26px;
    flex-shrink: 0;
    border: 1px solid var(--border);
    cursor: pointer;
    transition: border-color 0.1s;
}

.attr-color-swatch:hover {
    border-color: var(--border-mid);
}

.attr-color-hex {
    flex: 1;
    font-family: monospace;
    text-transform: uppercase;
}

.attr-file-row {
    display: flex;
    gap: 6px;
    align-items: center;
}

.attr-file-btn {
    background: var(--surface-3);
    border: 1px solid var(--border);
    color: var(--text-1);
    padding: 3px 9px;
    cursor: pointer;
    font-size: 10px;
    font-family: inherit;
    white-space: nowrap;
    transition: border-color 0.1s;
}

.attr-file-btn:hover {
    border-color: var(--border-mid);
}

.attr-file-name {
    font-size: 10px;
    color: var(--text-3);
    max-width: 90px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.attr-settings-title {
    margin-top: 14px;
    margin-bottom: 6px;
    color: var(--text-3);
    font-size: 9px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.empty-state {
    font-size: 10px;
    color: var(--text-3);
    padding: 4px 2px;
}

/* Scrollbars */
::-webkit-scrollbar {
    width: 5px;
    height: 5px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-mid);
    border-radius: 2px;
}

::-webkit-scrollbar-thumb:hover {
    background: #3e3e44;
}

::-webkit-scrollbar-corner {
    background: transparent;
}

* {
    scrollbar-width: thin;
    scrollbar-color: var(--border-mid) transparent;
}

/* Toasts */
#toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 99999;
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    background: var(--surface-2);
    border: 1px solid var(--border-mid);
    color: var(--text-1);
    font-family: 'Inter', sans-serif;
    font-size: 11px;
    pointer-events: auto;
    transform: translateY(10px);
    opacity: 0;
    transition: transform 0.25s ease, opacity 0.2s ease;
}

.toast--visible {
    transform: translateY(0);
    opacity: 1;
}

.toast--hidden {
    opacity: 0;
}

.toast--error {
    border-left: 2px solid #e05555;
}

.toast--success {
    border-left: 2px solid #5ea85e;
}

.toast--info {
    border-left: 2px solid #5585c8;
}

.toast-icon {
    font-size: 12px;
    flex-shrink: 0;
}

.toast-message {
    font-weight: 500;
}

/* ── Graph Breadcrumbs ────────────────────────────────────────── */
#graph-breadcrumbs {
    position: absolute;
    top: 48px;
    left: 10px;
    z-index: 100;
    background: rgba(8, 8, 8, 0.75);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 6px 12px;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 9.5px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    user-select: none;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
    pointer-events: auto;
}

#graph-breadcrumbs span.crumb-btn {
    color: var(--text-2);
    cursor: pointer;
    transition: color 0.12s ease;
}

#graph-breadcrumbs span.crumb-btn:hover {
    color: var(--accent);
}

#graph-breadcrumbs span.crumb-active {
    color: var(--text-1);
    cursor: default;
}

#graph-breadcrumbs span.crumb-separator {
    color: var(--text-3);
    font-weight: 400;
}

/* Blender-Style Color Ramp Widget CSS */
.color-ramp-widget {
    margin-top: 6px;
    margin-bottom: 12px;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 8px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 12px;
}

.color-ramp-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-3);
}

.color-ramp-btn-group {
    display: flex;
    gap: 4px;
}

.color-ramp-btn {
    background: var(--surface-3);
    border: 1px solid var(--border);
    color: var(--text-2);
    width: 22px;
    height: 18px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    border-radius: 2px;
    transition: all 0.1s ease;
}

.color-ramp-btn:hover {
    border-color: var(--border-mid);
    color: var(--text-1);
    background: var(--surface-2);
}

.color-ramp-bar-container {
    position: relative;
    width: 100%;
    height: 20px;
    border: 1px solid var(--border);
    border-radius: 3px;
    cursor: pointer;
    user-select: none;
    background-image: repeating-conic-gradient(#3c3c3c 0% 25%, #1f1f1f 0% 50%) 50% / 8px 8px;
    margin-top: 2px;
    margin-bottom: 12px;
    overflow: visible;
}

.color-ramp-bar-gradient {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border-radius: 2px;
}

.color-ramp-handle {
    position: absolute;
    top: 10px;
    transform: translateX(-50%);
    width: 14px;
    height: 16px;
    cursor: ew-resize;
    z-index: 10;
    background-color: transparent;
}

.color-ramp-handle-pointer {
    position: absolute;
    top: -8px;
    left: 3px;
    width: 8px;
    height: 8px;
    border: 1px solid #000;
    box-sizing: border-box;
    transform: rotate(45deg);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.color-ramp-handle-flag {
    position: absolute;
    top: -4px;
    left: 1px;
    width: 12px;
    height: 14px;
    border: 1px solid #000;
    box-sizing: border-box;
    border-radius: 1px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
}

.color-ramp-handle.active .color-ramp-handle-flag,
.color-ramp-handle.active .color-ramp-handle-pointer {
    border-color: var(--accent) !important;
    outline: 1px solid var(--accent);
}

.color-ramp-stops-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 4px;
}

.color-ramp-stop-tab {
    font-size: 8px;
    background: var(--surface-2);
    border: 1px solid var(--border);
    color: var(--text-3);
    padding: 2px 6px;
    cursor: pointer;
    border-radius: 2px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 0.1s ease;
}

.color-ramp-stop-tab:hover {
    border-color: var(--border-mid);
    color: var(--text-2);
}

.color-ramp-stop-tab.active {
    background: var(--surface-3);
    border-color: var(--accent);
    color: var(--text-1);
    font-weight: 600;
}

/* Export Modal */
.export-modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    z-index: 10000;
    display: none;
    align-items: center;
    justify-content: center;
    color: var(--text-1);
    font-family: 'Inter', -apple-system, sans-serif;
}

.export-modal-content {
    background: var(--surface-1);
    border: 1px solid var(--border);
    padding: 24px;
    border-radius: 4px;
    width: 380px;
}

.export-modal-title {
    margin: 0 0 16px;
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-2);
    border-bottom: 1px solid var(--border);
    padding-bottom: 12px;
}

.export-modal-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 9px 10px;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 2px;
}

.export-modal-row-left {
    display: flex;
    align-items: center;
    gap: 8px;
}

.export-modal-row-info {
    font-size: 10px;
    color: var(--text-3);
    font-family: monospace;
    text-align: right;
}

.export-modal-empty {
    color: var(--text-2);
    font-size: 11px;
    text-align: center;
    padding: 10px;
}

/* Modal Buttons */
.btn-primary {
    padding: 9px 14px;
    font-size: 11px;
    font-weight: 600;
    border-radius: 2px;
    cursor: pointer;
    font-family: inherit;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    background: var(--accent);
    color: #000;
    border: 1px solid var(--accent);
    width: 100%;
    transition: background 0.1s, border-color 0.1s;
}

.btn-primary:hover {
    background: #fff;
    border-color: #fff;
}

.btn-secondary {
    padding: 9px 14px;
    font-size: 11px;
    font-weight: 500;
    border-radius: 2px;
    cursor: pointer;
    font-family: inherit;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    background: var(--surface-2);
    color: var(--text-2);
    border: 1px solid var(--border);
    width: 100%;
}

.btn-cancel {
    padding: 8px 14px;
    font-size: 11px;
    font-weight: 500;
    border-radius: 2px;
    cursor: pointer;
    font-family: inherit;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: transparent;
    color: var(--text-3);
    border: 1px solid transparent;
    transition: color 0.1s;
}

.btn-cancel:hover {
    color: var(--text-2);
}

/* Color Picker */
.color-picker-popup {
    position: absolute;
    background: var(--surface-1);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px;
    z-index: 10000;
    display: none;
    flex-direction: column;
    gap: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
}

.color-picker-hex {
    width: 100%;
    margin-top: 4px;
    background: var(--surface-2);
    border: 1px solid var(--border);
    color: var(--text-1);
    padding: 4px;
    font-family: 'SF Mono', 'Roboto Mono', monospace;
    font-size: 11px;
    text-align: center;
    border-radius: 3px;
    outline: none;
}


/* ═══════════════════════════════════════════════════════════
   COMPONENT BROWSER PANEL
   ═══════════════════════════════════════════════════════════ */

.comp-browser-search-row {
    padding: 38px 10px 8px;
    flex-shrink: 0;
}

.comp-browser-search {
    width: 100%;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-1);
    font-family: inherit;
    font-size: 11px;
    padding: 5px 10px;
    outline: none;
    transition: border-color 0.15s;
}

.comp-browser-search:focus {
    border-color: var(--border-mid);
}

.comp-browser-search::placeholder {
    color: var(--text-3);
}

.comp-browser-list {
    flex: 1;
    overflow-y: auto;
    padding: 4px 8px 8px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

/* Empty state */
.comp-browser-empty {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 20px;
    color: var(--text-3);
    text-align: center;
}

.comp-browser-empty p {
    font-size: 12px;
    color: var(--text-2);
    margin: 0;
}

.comp-browser-empty span {
    font-size: 11px;
    line-height: 1.5;
}

.comp-browser-empty kbd {
    display: inline-block;
    background: var(--surface-2);
    border: 1px solid var(--border-mid);
    border-radius: 3px;
    padding: 1px 5px;
    font-size: 10px;
    font-family: monospace;
    color: var(--accent);
}

/* Component card */
.comp-browser-card {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 5px;
    padding: 7px 8px;
    cursor: grab;
    user-select: none;
    transition: background 0.15s, border-color 0.15s;
}

.comp-browser-card:hover {
    background: var(--surface-3);
    border-color: var(--border-mid);
}

.comp-browser-card.dragging {
    opacity: 0.5;
    cursor: grabbing;
}

.comp-card-icon {
    color: var(--accent);
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.comp-card-body {
    flex: 1;
    min-width: 0;
}

.comp-card-name {
    font-size: 12px;
    color: var(--text-1);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.comp-card-meta {
    font-size: 10px;
    color: var(--text-3);
    margin-top: 1px;
}

.comp-card-actions {
    display: flex;
    gap: 2px;
    opacity: 0;
    transition: opacity 0.15s;
}

.comp-browser-card:hover .comp-card-actions {
    opacity: 1;
}

.comp-card-btn {
    background: transparent;
    border: none;
    color: var(--text-3);
    cursor: pointer;
    padding: 3px 5px;
    border-radius: 3px;
    display: flex;
    align-items: center;
    transition: color 0.1s, background 0.1s;
}

.comp-card-btn:hover {
    color: var(--text-1);
    background: var(--surface-1);
}

.comp-card-btn--delete:hover {
    color: #e05c5c !important;
}

.marquee-box {
    position: absolute;
    border: 1px solid rgba(247, 255, 158, 0.5);
    background: rgba(247, 255, 158, 0.08);
    pointer-events: none;
    z-index: 100;
}

.tl-ruler {
    cursor: ew-resize;
}

body.marquee-active,
body.marquee-active * {
    cursor: crosshair !important;
}

/* Console Log Footer */
#app-footer {
    height: 24px;
    background: var(--bg);
    display: flex;
    align-items: center;
    padding: 0 2px;
    z-index: 1000;
}

#app-footer.hidden {
    display: none;
}

#console-wrapper {
    display: flex;
    align-items: center;
    flex: 1;
    background: var(--surface-2);
    border-radius: 4px;
    padding: 2px 8px 2px 6px;
    overflow: hidden;
}

#console-log {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    color: var(--text-3);
    font-family: 'Inter', sans-serif;
    font-size: 10px;
}

#console-log::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #7ca856;
    /* soft green */
    flex-shrink: 0;
}

#console-wrapper.warn #console-log::before {
    background: #c29542;
    /* soft yellow/gold */
}

#console-wrapper.error #console-log::before {
    background: #b54545;
    /* soft red */
}

#console-close {
    cursor: pointer;
    padding: 0 4px;
    color: var(--text-3);
    font-size: 14px;
    line-height: 1;
    margin-left: 12px;
    flex-shrink: 0;
}

#console-close:hover {
    color: var(--text-1);
    cursor: pointer;
}