/**
 * Zezuru Viewer — front-end.
 *
 * The chrome stays quiet so the model carries the page. Instruments sit on a
 * single brass-marked rail; the only loud element is the note marker.
 */

.zezuru {
	--zz-height: 560px;
	--zz-min-height: 320px;
	--zz-accent: #5f9a93;
	--zz-marker: #e0c87a;
	--zz-surface: rgba(24, 23, 20, 0.82);
	--zz-surface-solid: #191815;
	--zz-ink: #ece7dd;
	--zz-ink-dim: #a49c8f;
	--zz-line: rgba(236, 231, 221, 0.16);
	--zz-radius: 6px;
	--zz-gap: clamp(10px, 2.2vw, 18px);
	--zz-shadow: 0 18px 48px -24px rgba(0, 0, 0, 0.75);
	--zz-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

	position: relative;
	display: block;
	width: 100%;
	height: var(--zz-height);
	min-height: var(--zz-min-height);
	overflow: hidden;
	border-radius: var(--zz-radius);
	background: #14130f;
	color: var(--zz-ink);
	font-family: var(--zz-font);
	font-size: 15px;
	line-height: 1.55;
	contain: layout paint;
	touch-action: none;
}

.zezuru--theme-light {
	--zz-surface: rgba(252, 251, 248, 0.86);
	--zz-surface-solid: #fbfaf7;
	--zz-ink: #20201c;
	--zz-ink-dim: #635e55;
	--zz-line: rgba(32, 32, 28, 0.14);
	background: #e9e6df;
}

.zezuru:focus-visible {
	outline: 2px solid var(--zz-marker);
	outline-offset: 3px;
}

.zezuru.has-gradient-bg {
	background: radial-gradient(120% 90% at 50% 0%, color-mix(in srgb, var(--zz-bg, #1b1a17) 130%, #ffffff) 0%, var(--zz-bg, #1b1a17) 68%, #0d0c0a 100%);
}

.zezuru__stage {
	position: absolute;
	inset: 0;
}

.zezuru__canvas {
	display: block;
	width: 100%;
	height: 100%;
	touch-action: none;
	cursor: grab;
}

.zezuru.is-walking .zezuru__canvas {
	cursor: none;
}

.zezuru__canvas:active {
	cursor: grabbing;
}

.zezuru__poster {
	position: absolute;
	inset: 0;
	width: 100%;
	height: 100%;
	object-fit: cover;
	filter: saturate(0.9);
	transition: opacity 500ms ease;
	pointer-events: none;
}

.zezuru__poster.is-hidden {
	opacity: 0;
}

/* -------------------------------------------------------------- loading */

.zezuru__loader {
	position: absolute;
	inset-inline: 0;
	inset-block-end: 0;
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 10px;
	padding: 22px var(--zz-gap) calc(var(--zz-gap) + 6px);
	background: linear-gradient(to top, rgba(10, 10, 8, 0.86), transparent);
}

.zezuru__loader-bar {
	width: min(280px, 60%);
	height: 2px;
	background: rgba(236, 231, 221, 0.18);
	overflow: hidden;
}

.zezuru__loader-bar span {
	display: block;
	width: 0%;
	height: 100%;
	background: var(--zz-marker);
	transition: width 180ms linear;
}

.zezuru__loader-text {
	margin: 0;
	font-size: 13px;
	letter-spacing: 0.01em;
	color: var(--zz-ink-dim);
	text-align: center;
	max-width: 42ch;
}

.zezuru__loader-detail {
	margin: 0;
	max-width: 46ch;
	font-size: 12px;
	line-height: 1.55;
	color: var(--zz-ink);
	text-align: center;
}

.zezuru__loader-url {
	max-width: 46ch;
	padding: 4px 8px;
	border-radius: 4px;
	background: rgba(236, 231, 221, 0.08);
	font-family: Menlo, Consolas, monospace;
	font-size: 11px;
	color: var(--zz-ink-dim);
	overflow-wrap: anywhere;
	text-align: center;
}

.zezuru__retry {
	margin-top: 4px;
	padding: 7px 16px;
	border: 1px solid var(--zz-line);
	border-radius: 999px;
	background: transparent;
	color: var(--zz-ink);
	font: inherit;
	font-size: 13px;
	cursor: pointer;
}

.zezuru__retry:hover {
	border-color: var(--zz-marker);
}

/* -------------------------------------------------------------- toolbar */

.zezuru__toolbar {
	position: absolute;
	inset-inline-end: var(--zz-gap);
	inset-block-end: var(--zz-gap);
	display: flex;
	gap: 2px;
	padding: 3px;
	border: 1px solid var(--zz-line);
	border-radius: 999px;
	background: var(--zz-surface);
	backdrop-filter: blur(14px) saturate(1.2);
	-webkit-backdrop-filter: blur(14px) saturate(1.2);
	box-shadow: var(--zz-shadow);
	z-index: 4;
}

.zezuru__toolbar:empty {
	display: none;
}

.zezuru__tool {
	display: grid;
	place-items: center;
	width: 38px;
	height: 38px;
	padding: 0;
	border: 0;
	border-radius: 999px;
	background: transparent;
	color: var(--zz-ink);
	cursor: pointer;
	transition: background-color 140ms ease, color 140ms ease;
}

.zezuru__tool svg {
	width: 19px;
	height: 19px;
	fill: none;
	stroke: currentColor;
	stroke-width: 1.5;
	stroke-linecap: round;
	stroke-linejoin: round;
}

.zezuru__tool:hover {
	background: rgba(236, 231, 221, 0.1);
}

.zezuru--theme-light .zezuru__tool:hover {
	background: rgba(32, 32, 28, 0.08);
}

.zezuru__tool:focus-visible {
	outline: 2px solid var(--zz-marker);
	outline-offset: -2px;
}

.zezuru__tool.is-active {
	background: var(--zz-accent);
	color: #0f1211;
}

/* ---------------------------------------------------------------- hints */

.zezuru__hint {
	position: absolute;
	inset-inline-start: var(--zz-gap);
	inset-block-end: var(--zz-gap);
	max-width: min(38ch, calc(100% - 120px));
	margin: 0;
	padding: 9px 14px;
	border: 1px solid var(--zz-line);
	border-radius: 999px;
	background: var(--zz-surface);
	backdrop-filter: blur(14px);
	-webkit-backdrop-filter: blur(14px);
	color: var(--zz-ink-dim);
	font-size: 12.5px;
	line-height: 1.45;
	opacity: 0;
	transform: translateY(6px);
	transition: opacity 240ms ease, transform 240ms ease;
	pointer-events: none;
	z-index: 3;
}

.zezuru__hint.is-visible {
	opacity: 1;
	transform: none;
}

/* -------------------------------------------------------------- markers */

.zezuru__markers {
	position: absolute;
	inset: 0;
	pointer-events: none;
	z-index: 2;
}

.zezuru__marker {
	--zz-note: var(--zz-marker);
	--zz-marker-scale: 1;
	position: absolute;
	inset-block-start: 0;
	inset-inline-start: 0;
	display: grid;
	place-items: center;
	width: 30px;
	height: 30px;
	margin: -15px 0 0 -15px;
	padding: 0;
	border: 0;
	background: none;
	color: #14130f;
	cursor: pointer;
	pointer-events: auto;
	scale: var(--zz-marker-scale);
	transition: opacity 160ms ease, scale 160ms ease;
}

.zezuru__marker-dot {
	position: absolute;
	inset: 0;
	border-radius: 999px;
	background: var(--zz-note);
	box-shadow: 0 0 0 1px rgba(20, 19, 15, 0.55), 0 6px 18px -8px rgba(0, 0, 0, 0.9);
	transition: scale 180ms cubic-bezier(0.2, 0.8, 0.3, 1);
}

.zezuru__marker-label {
	position: relative;
	font-size: 12px;
	font-weight: 600;
	font-variant-numeric: tabular-nums;
	letter-spacing: 0.01em;
}

.zezuru__marker::before {
	content: "";
	position: absolute;
	inset: -9px;
	border: 1px solid var(--zz-note);
	border-radius: 999px;
	opacity: 0;
	transition: opacity 200ms ease, inset 200ms ease;
}

.zezuru__marker:hover::before,
.zezuru__marker:focus-visible::before,
.zezuru__marker.is-active::before {
	opacity: 0.85;
	inset: -7px;
}

.zezuru__marker:focus-visible {
	outline: none;
}

.zezuru__marker:focus-visible .zezuru__marker-dot {
	box-shadow: 0 0 0 2px #14130f, 0 0 0 4px var(--zz-note);
}

.zezuru__marker.is-behind {
	opacity: 0.32;
}

.zezuru__marker.is-behind .zezuru__marker-label {
	opacity: 0;
}

.zezuru__marker.is-offscreen {
	display: none;
}

.zezuru__marker--dot {
	width: 16px;
	height: 16px;
	margin: -8px 0 0 -8px;
}

.zezuru__marker--dot .zezuru__marker-label {
	display: none;
}

.zezuru__marker--ring .zezuru__marker-dot {
	background: transparent;
	border: 2px solid var(--zz-note);
}

.zezuru__marker--ring .zezuru__marker-label {
	color: var(--zz-note);
}

.zezuru__marker--tag {
	width: auto;
	height: 26px;
	margin: -13px 0 0 -13px;
	padding: 0 12px;
}

.zezuru__marker--tag .zezuru__marker-dot {
	border-radius: 4px;
}

/* ---------------------------------------------------------- note panel */

.zezuru__panel {
	position: absolute;
	inset-block-start: var(--zz-gap);
	inset-inline-end: var(--zz-gap);
	width: min(330px, calc(100% - var(--zz-gap) * 2));
	max-height: calc(100% - var(--zz-gap) * 2 - 52px);
	overflow-y: auto;
	overscroll-behavior: contain;
	padding: 14px 16px 16px;
	border: 1px solid var(--zz-line);
	border-radius: var(--zz-radius);
	background: var(--zz-surface);
	backdrop-filter: blur(18px) saturate(1.3);
	-webkit-backdrop-filter: blur(18px) saturate(1.3);
	box-shadow: var(--zz-shadow);
	z-index: 5;
	animation: zezuru-panel-in 220ms cubic-bezier(0.2, 0.8, 0.3, 1);
}

@keyframes zezuru-panel-in {
	from {
		opacity: 0;
		transform: translateY(-6px);
	}
}

.zezuru__panel-head {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 12px;
	margin-bottom: 6px;
}

.zezuru__panel-count {
	font-size: 11.5px;
	font-variant-numeric: tabular-nums;
	color: var(--zz-ink-dim);
}

.zezuru__panel-close {
	display: grid;
	place-items: center;
	width: 26px;
	height: 26px;
	margin-inline-end: -4px;
	padding: 0;
	border: 0;
	border-radius: 999px;
	background: transparent;
	color: var(--zz-ink-dim);
	cursor: pointer;
}

.zezuru__panel-close svg {
	width: 13px;
	height: 13px;
	fill: none;
	stroke: currentColor;
	stroke-width: 1.6;
	stroke-linecap: round;
}

.zezuru__panel-close:hover {
	color: var(--zz-ink);
	background: rgba(236, 231, 221, 0.1);
}

.zezuru__panel-title {
	margin: 0 0 8px;
	font-size: 17px;
	font-weight: 600;
	line-height: 1.3;
	letter-spacing: -0.008em;
	color: var(--zz-ink);
}

.zezuru__panel-image {
	display: block;
	width: 100%;
	height: auto;
	margin: 0 0 10px;
	border-radius: 3px;
}

.zezuru__panel-body {
	font-size: 14px;
	line-height: 1.6;
	color: color-mix(in srgb, var(--zz-ink) 88%, transparent);
}

.zezuru__panel-body > :first-child {
	margin-top: 0;
}

.zezuru__panel-body > :last-child {
	margin-bottom: 0;
}

.zezuru__panel-body a {
	color: var(--zz-accent);
}

.zezuru__panel-body img {
	max-width: 100%;
	height: auto;
}

.zezuru__panel-link {
	display: inline-block;
	margin-top: 12px;
	padding: 7px 14px;
	border: 1px solid var(--zz-accent);
	border-radius: 999px;
	color: var(--zz-accent);
	font-size: 13px;
	text-decoration: none;
}

.zezuru__panel-link:hover {
	background: var(--zz-accent);
	color: #0f1211;
}

.zezuru__panel-nav {
	display: flex;
	gap: 8px;
	margin-top: 14px;
	padding-top: 12px;
	border-top: 1px solid var(--zz-line);
}

.zezuru__panel-nav button {
	flex: 1;
	padding: 7px 10px;
	border: 1px solid var(--zz-line);
	border-radius: 4px;
	background: transparent;
	color: var(--zz-ink-dim);
	font: inherit;
	font-size: 13px;
	cursor: pointer;
}

.zezuru__panel-nav button:hover {
	color: var(--zz-ink);
	border-color: var(--zz-marker);
}

/* -------------------------------------------------------- notes index */

.zezuru__index {
	position: absolute;
	inset-block-start: var(--zz-gap);
	inset-inline-start: var(--zz-gap);
	max-width: min(230px, 45%);
	max-height: calc(100% - var(--zz-gap) * 2 - 52px);
	overflow-y: auto;
	overscroll-behavior: contain;
	z-index: 3;
}

.zezuru__index-list {
	margin: 0;
	padding: 0;
	list-style: none;
	display: flex;
	flex-direction: column;
	gap: 1px;
}

.zezuru__index-item {
	display: flex;
	align-items: baseline;
	gap: 9px;
	width: 100%;
	padding: 7px 12px 7px 9px;
	border: 0;
	border-left: 2px solid transparent;
	background: var(--zz-surface);
	backdrop-filter: blur(10px);
	-webkit-backdrop-filter: blur(10px);
	color: var(--zz-ink-dim);
	font: inherit;
	font-size: 13px;
	text-align: start;
	cursor: pointer;
	transition: color 140ms ease, border-color 140ms ease;
}

.zezuru__index-item:hover,
.zezuru__index-item.is-active {
	color: var(--zz-ink);
	border-left-color: var(--zz-marker);
}

.zezuru__index-num {
	flex: none;
	min-width: 1.2em;
	font-variant-numeric: tabular-nums;
	color: var(--zz-marker);
}

.zezuru__index-title {
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}

/* ------------------------------------------------------------ joystick */

.zezuru__joystick {
	position: absolute;
	inset-block-end: calc(var(--zz-gap) + 6px);
	inset-inline-start: calc(var(--zz-gap) + 6px);
	width: 104px;
	height: 104px;
	border: 1px solid var(--zz-line);
	border-radius: 999px;
	background: rgba(20, 19, 15, 0.42);
	backdrop-filter: blur(8px);
	-webkit-backdrop-filter: blur(8px);
	touch-action: none;
	z-index: 4;
}

.zezuru__joystick span {
	position: absolute;
	inset-block-start: 50%;
	inset-inline-start: 50%;
	width: 42px;
	height: 42px;
	margin: -21px 0 0 -21px;
	border-radius: 999px;
	background: rgba(236, 231, 221, 0.5);
	transition: transform 60ms linear;
}

/* ------------------------------------------------------------- caption */

.zezuru__caption {
	display: flex;
	flex-wrap: wrap;
	gap: 4px 10px;
	margin: 8px 0 0;
	font-family: var(--zz-font);
	font-size: 13px;
	line-height: 1.5;
	color: currentColor;
	opacity: 0.8;
}

.zezuru__credit {
	opacity: 0.68;
}

.zezuru__fallback {
	position: absolute;
	inset-block-end: 12px;
	inset-inline: 12px;
	margin: 0;
	text-align: center;
	font-size: 13px;
	color: var(--zz-ink-dim);
}

/* --------------------------------------------------------- empty state */

.zezuru--empty {
	display: grid;
	place-items: center;
	height: auto;
	min-height: 220px;
	padding: 40px 24px;
	border: 1px dashed var(--zz-line);
	background: #1b1a17;
	text-align: center;
}

.zezuru--empty p {
	margin: 0;
	max-width: 36ch;
	color: var(--zz-ink-dim);
	font-size: 14px;
}

/* ------------------------------------------------------------ responsive */

@media (max-width: 782px) {
	.zezuru {
		height: min(var(--zz-height), 74vh);
	}

	.zezuru__panel {
		inset-block-start: auto;
		inset-block-end: 0;
		inset-inline: 0;
		width: 100%;
		max-height: 58%;
		padding-block-end: calc(16px + env(safe-area-inset-bottom, 0px));
		border-radius: 12px 12px 0 0;
		border-inline-width: 0;
		border-block-end-width: 0;
		animation-name: zezuru-sheet-in;
	}

	@keyframes zezuru-sheet-in {
		from {
			transform: translateY(18px);
			opacity: 0;
		}
	}

	.zezuru__panel-title {
		font-size: 16px;
	}

	.zezuru__index {
		inset-block-start: auto;
		inset-block-end: calc(var(--zz-gap) + 46px);
		inset-inline: var(--zz-gap);
		max-width: none;
		max-height: none;
		overflow-x: auto;
		overflow-y: hidden;
	}

	.zezuru__index-list {
		flex-direction: row;
		gap: 6px;
	}

	.zezuru__index-item {
		flex: none;
		border-left: 0;
		border-bottom: 2px solid transparent;
		border-radius: 999px;
		padding: 6px 14px;
	}

	.zezuru__index-item .zezuru__index-title {
		max-width: 14ch;
	}

	.zezuru__index-item:hover,
	.zezuru__index-item.is-active {
		border-bottom-color: transparent;
		background: var(--zz-marker);
		color: #14130f;
	}

	.zezuru__index-item.is-active .zezuru__index-num {
		color: #14130f;
	}

	.zezuru__hint {
		inset-block-end: calc(var(--zz-gap) + 46px);
		max-width: calc(100% - var(--zz-gap) * 2);
	}

	.zezuru__tool {
		width: 42px;
		height: 42px;
	}
}

@media (max-width: 480px) {
	.zezuru {
		border-radius: 0;
		--zz-gap: 10px;
	}

	.zezuru__joystick {
		width: 92px;
		height: 92px;
	}
}

@media (hover: none) {
	.zezuru__hint {
		font-size: 13px;
	}
}

@media (prefers-reduced-motion: reduce) {
	.zezuru *,
	.zezuru *::before,
	.zezuru *::after {
		animation-duration: 0.001ms !important;
		animation-iteration-count: 1 !important;
		transition-duration: 0.001ms !important;
	}
}

@media (forced-colors: active) {
	.zezuru__tool,
	.zezuru__marker-dot,
	.zezuru__panel {
		forced-color-adjust: none;
	}
}