/* /dissolve: full-bleed particle stage with a floating control dock.
 *
 * Page tokens layer over /style.css. The stage is always dark: it is a lit
 * scene, not a document, so the theme only recolours the dock.
 */

:root {
	--ds-accent: #6ee7ff;
	--ds-accent-2: #a78bfa;
	--ds-ink: #eef4ff;
	--ds-muted: rgba(226, 236, 255, 0.62);
	--ds-panel: rgba(8, 12, 22, 0.72);
	--ds-border: rgba(160, 190, 255, 0.16);
	--ds-border-strong: rgba(160, 200, 255, 0.4);
	--ds-surface: rgba(255, 255, 255, 0.05);
	--ds-surface-hover: rgba(255, 255, 255, 0.1);
	--ds-danger: #ff5d6c;
	--ds-radius: 14px;
}
:root[data-theme='light'] {
	--ds-panel: rgba(255, 255, 255, 0.82);
	--ds-ink: #0b1220;
	--ds-muted: rgba(11, 18, 32, 0.62);
	--ds-border: rgba(10, 30, 70, 0.14);
	--ds-border-strong: rgba(10, 30, 70, 0.42);
	--ds-surface: rgba(10, 30, 70, 0.05);
	--ds-surface-hover: rgba(10, 30, 70, 0.1);
	--ds-accent: #0369a1;
}

.ds-body {
	margin: 0;
	background: #04060b;
	color: var(--ds-ink);
	overflow: hidden;
	overscroll-behavior: none;
}
.ds-body > header {
	position: relative;
	z-index: 30;
}

.ds-stage {
	position: fixed;
	inset: 0;
	z-index: 1;
	overflow: hidden;
	background: radial-gradient(1200px 800px at 50% 0%, rgba(40, 80, 200, 0.18), transparent 60%), #04060b;
}
.ds-stage.is-drop::after {
	content: 'Drop a .glb to dissolve it into B';
	position: absolute;
	inset: 16px;
	display: grid;
	place-items: center;
	border: 2px dashed var(--ds-accent);
	border-radius: 22px;
	background: rgba(4, 10, 24, 0.7);
	color: var(--ds-ink);
	font: 600 18px/1.3 var(--font-display, system-ui, sans-serif);
	z-index: 20;
	pointer-events: none;
}
.ds-canvas {
	position: absolute;
	inset: 0;
	width: 100%;
	height: 100%;
	display: block;
	touch-action: none;
	cursor: crosshair;
	outline: none;
}
.ds-canvas[data-tool='orbit'] {
	cursor: grab;
}
.ds-canvas[data-tool='orbit']:active {
	cursor: grabbing;
}

/* ── Hero ── */
.ds-hero {
	position: absolute;
	left: clamp(16px, 3vw, 40px);
	top: clamp(72px, 10vh, 110px);
	max-width: min(440px, 60vw);
	pointer-events: none;
	transition: opacity var(--duration-slow) var(--ease-standard), transform var(--duration-slow) var(--ease-standard);
}
.ds-hero.is-compact {
	opacity: 0.85;
}
.ds-hero h1 {
	margin: 10px 0 6px;
	font: 700 clamp(34px, 5.4vw, 64px) / 1 var(--font-display, 'Space Grotesk', system-ui, sans-serif);
	letter-spacing: -0.035em;
	background: linear-gradient(120deg, #fff 10%, var(--ds-accent) 55%, var(--ds-accent-2));
	-webkit-background-clip: text;
	background-clip: text;
	color: transparent;
}
.ds-hero p {
	margin: 0;
	color: var(--ds-muted);
	font-size: 15px;
	line-height: 1.5;
}
:root[data-theme='light'] .ds-hero h1 {
	background: linear-gradient(120deg, #fff 10%, #7dd3fc 55%, #c4b5fd);
	-webkit-background-clip: text;
	background-clip: text;
}
:root[data-theme='light'] .ds-hero p,
:root[data-theme='light'] .ds-chip {
	color: rgba(226, 236, 255, 0.7);
}
.ds-chip {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	padding: 5px 12px;
	border: 1px solid var(--ds-border);
	border-radius: 999px;
	background: rgba(8, 12, 22, 0.55);
	backdrop-filter: blur(10px);
	font: 600 11px/1 var(--font-mono, ui-monospace, monospace);
	letter-spacing: 0.06em;
	text-transform: uppercase;
	color: var(--ds-muted);
}
.ds-chip-dot {
	width: 7px;
	height: 7px;
	border-radius: 50%;
	background: var(--ds-accent);
	box-shadow: 0 0 10px var(--ds-accent);
	animation: ds-pulse 2.4s ease-in-out infinite;
}
@keyframes ds-pulse {
	50% {
		opacity: 0.35;
	}
}

/* ── Loading and fallback ── */
.ds-loading {
	position: absolute;
	left: 50%;
	bottom: 56px;
	transform: translateX(-50%);
	z-index: 12;
	pointer-events: none;
}
.ds-loading[hidden],
.ds-fallback[hidden],
.ds-toast[hidden],
.ds-rec[hidden] {
	display: none;
}
.ds-loading-card {
	min-width: min(360px, 82vw);
	padding: 12px 16px;
	border: 1px solid var(--ds-border);
	border-radius: var(--ds-radius);
	background: var(--ds-panel);
	backdrop-filter: blur(16px);
	color: #eef4ff;
}
.ds-loading-label {
	font-size: 13px;
	margin-bottom: 8px;
}
.ds-bar {
	height: 4px;
	border-radius: 4px;
	background: rgba(255, 255, 255, 0.12);
	overflow: hidden;
}
.ds-bar-fill {
	height: 100%;
	width: 100%;
	transform-origin: left center;
	background: linear-gradient(90deg, var(--ds-accent), var(--ds-accent-2));
	transition: transform var(--duration-fast) var(--ease-standard);
}
.ds-bar-fill.is-indeterminate {
	animation: ds-slide 1.1s ease-in-out infinite;
}
@keyframes ds-slide {
	50% {
		transform: scaleX(0.45) translateX(120%);
	}
}
.ds-fallback {
	position: absolute;
	inset: 0;
	display: grid;
	align-content: center;
	justify-items: center;
	gap: 14px;
	padding: 24px;
	text-align: center;
	z-index: 15;
}
.ds-fallback h2 {
	margin: 0;
	font: 700 26px/1.2 var(--font-display, system-ui, sans-serif);
}
.ds-fallback p {
	margin: 0;
	max-width: 480px;
	color: var(--ds-muted);
	line-height: 1.55;
}

/* ── Dock ── */
.ds-dock {
	position: absolute;
	right: clamp(10px, 2vw, 24px);
	top: clamp(64px, 9vh, 90px);
	bottom: clamp(10px, 2vw, 24px);
	width: 316px;
	overflow-y: auto;
	padding: 14px 16px 12px;
	border: 1px solid var(--ds-border);
	border-radius: 18px;
	background: var(--ds-panel);
	backdrop-filter: blur(18px) saturate(1.3);
	z-index: 10;
	scrollbar-width: thin;
	transition: transform var(--duration-base) var(--ease-standard), opacity var(--duration-base) var(--ease-standard);
}
.ds-dock.is-closed {
	transform: translateX(calc(100% + 32px));
	opacity: 0;
	pointer-events: none;
}
.ds-dock[hidden] {
	display: none;
}
.ds-sec {
	padding: 10px 0 12px;
	border-bottom: 1px solid var(--ds-border);
}
.ds-sec:last-of-type {
	border-bottom: 0;
}
.ds-sec h2 {
	margin: 0 0 9px;
	font: 700 11px/1 var(--font-mono, ui-monospace, monospace);
	letter-spacing: 0.1em;
	text-transform: uppercase;
	color: var(--ds-muted);
}
.ds-slot {
	display: flex;
	align-items: flex-start;
	gap: 8px;
	margin-bottom: 8px;
}
.ds-slot-tag {
	flex: none;
	width: 22px;
	height: 22px;
	margin-top: 2px;
	border-radius: 7px;
	display: grid;
	place-items: center;
	font: 700 11px/1 var(--font-mono, ui-monospace, monospace);
	background: var(--ds-accent);
	color: #04141f;
}
.ds-slot-tag--b {
	background: var(--ds-accent-2);
	color: #12072e;
}
.ds-chips {
	display: flex;
	flex-wrap: wrap;
	gap: 5px;
	min-width: 0;
}
.ds-chip-btn,
.ds-btn,
.ds-tool {
	font: 600 12px/1 var(--font-body, system-ui, sans-serif);
	color: var(--ds-ink);
	background: var(--ds-surface);
	border: 1px solid var(--ds-border);
	border-radius: 9px;
	padding: 7px 10px;
	cursor: pointer;
	transition: background var(--duration-fast) var(--ease-standard), border-color var(--duration-fast) var(--ease-standard), transform var(--duration-instant) var(--ease-standard);
}
.ds-chip-btn:hover,
.ds-btn:hover,
.ds-tool:hover {
	background: var(--ds-surface-hover);
	border-color: var(--ds-border-strong);
}
.ds-chip-btn:active,
.ds-btn:active,
.ds-tool:active {
	transform: scale(0.97);
}
.ds-chip-btn:focus-visible,
.ds-btn:focus-visible,
.ds-tool:focus-visible,
.ds-dock-toggle:focus-visible,
.ds-url input:focus-visible,
.ds-select select:focus-visible,
.ds-range input:focus-visible,
.ds-slider input:focus-visible {
	outline: 2px solid var(--ds-accent);
	outline-offset: 2px;
}
.ds-chip-btn[aria-checked='true'],
.ds-tool[aria-checked='true'],
.ds-toggle[aria-pressed='true'] {
	background: color-mix(in srgb, var(--ds-accent) 22%, transparent);
	border-color: var(--ds-accent);
}
.ds-chip-btn[hidden] {
	display: none;
}
.ds-btn--primary {
	background: linear-gradient(120deg, var(--ds-accent), var(--ds-accent-2));
	color: #04141f;
	border-color: transparent;
}
.ds-btn--primary:hover {
	filter: brightness(1.1);
	background: linear-gradient(120deg, var(--ds-accent), var(--ds-accent-2));
}
.ds-btn:disabled {
	opacity: 0.45;
	cursor: not-allowed;
}
.ds-row {
	display: flex;
	flex-wrap: wrap;
	gap: 6px;
	margin-top: 8px;
}
.ds-url {
	display: flex;
	gap: 6px;
	margin-top: 8px;
}
.ds-url input,
.ds-select select {
	flex: 1;
	min-width: 0;
	font: 500 12px/1 var(--font-body, system-ui, sans-serif);
	color: var(--ds-ink);
	background: var(--ds-surface);
	border: 1px solid var(--ds-border);
	border-radius: 9px;
	padding: 8px 10px;
}
.ds-tools {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 6px;
}
.ds-tool {
	display: flex;
	align-items: center;
	gap: 8px;
	padding: 9px 10px;
	text-align: left;
}
.ds-tool kbd {
	font: 700 10px/1 var(--font-mono, ui-monospace, monospace);
	padding: 3px 5px;
	border-radius: 5px;
	background: rgba(255, 255, 255, 0.1);
	color: var(--ds-muted);
}
.ds-hint {
	margin: 8px 0 0;
	min-height: 32px;
	font-size: 12px;
	line-height: 1.4;
	color: var(--ds-muted);
}
.ds-range,
.ds-slider,
.ds-select {
	display: flex;
	align-items: center;
	gap: 8px;
	margin-top: 10px;
	font-size: 12px;
	color: var(--ds-muted);
}
.ds-slider span,
.ds-select span {
	width: 52px;
	flex: none;
}
.ds-range input,
.ds-slider input {
	flex: 1;
	min-width: 0;
	accent-color: var(--ds-accent);
}
.ds-keys {
	margin: 4px 0 0;
	font-size: 11px;
	line-height: 1.5;
	color: var(--ds-muted);
}
.ds-sr {
	position: absolute;
	width: 1px;
	height: 1px;
	overflow: hidden;
	clip: rect(0 0 0 0);
	white-space: nowrap;
}
.ds-dock-toggle {
	position: absolute;
	right: clamp(10px, 2vw, 24px);
	bottom: clamp(10px, 2vw, 24px);
	z-index: 11;
	display: none;
	padding: 11px 16px;
	border: 1px solid var(--ds-border-strong);
	border-radius: 999px;
	background: var(--ds-panel);
	backdrop-filter: blur(14px);
	color: var(--ds-ink);
	font: 700 13px/1 var(--font-body, system-ui, sans-serif);
	cursor: pointer;
}

/* ── Toast and recording ── */
.ds-toast {
	position: absolute;
	left: 50%;
	bottom: 18px;
	transform: translateX(-50%);
	z-index: 25;
	display: flex;
	align-items: center;
	gap: 12px;
	max-width: min(560px, 92vw);
	padding: 11px 16px;
	border: 1px solid var(--ds-border-strong);
	border-radius: 12px;
	background: rgba(8, 12, 22, 0.92);
	backdrop-filter: blur(14px);
	color: #eef4ff;
	font-size: 13px;
	line-height: 1.4;
}
.ds-toast-action {
	flex: none;
	border: 0;
	border-radius: 8px;
	padding: 7px 10px;
	background: var(--ds-accent);
	color: #04141f;
	font: 700 12px/1 var(--font-body, system-ui, sans-serif);
	cursor: pointer;
}
.ds-rec {
	position: absolute;
	left: 50%;
	top: 70px;
	transform: translateX(-50%);
	z-index: 12;
	display: flex;
	align-items: center;
	gap: 8px;
	padding: 6px 12px;
	border-radius: 999px;
	background: rgba(8, 12, 22, 0.8);
	border: 1px solid var(--ds-danger);
	font: 700 12px/1 var(--font-mono, ui-monospace, monospace);
	color: #fff;
}
.ds-rec-dot {
	width: 9px;
	height: 9px;
	border-radius: 50%;
	background: var(--ds-danger);
	animation: ds-pulse 1s ease-in-out infinite;
}

/* ── Small screens: the dock becomes a bottom sheet ── */
@media (max-width: 760px) {
	.ds-dock-toggle {
		display: block;
	}
	.ds-dock {
		left: 10px;
		right: 10px;
		top: auto;
		bottom: 64px;
		width: auto;
		max-height: 52vh;
	}
	.ds-dock.is-closed {
		transform: translateY(calc(100% + 80px));
	}
	.ds-hero {
		max-width: 80vw;
		top: 70px;
	}
	.ds-hero p {
		font-size: 13px;
	}
	.ds-loading {
		bottom: 72px;
	}
}

@media (prefers-reduced-motion: reduce) {
	.ds-chip-dot,
	.ds-rec-dot,
	.ds-bar-fill.is-indeterminate {
		animation: none;
	}
	.ds-dock,
	.ds-hero {
		transition: none;
	}
}

/* Hover feedback for the controls above that set cursor: pointer. */
.ds-dock-toggle:hover { border-color: var(--ds-accent); }
.ds-toast-action:hover { filter: brightness(1.1); }