web/score-player.css

/* LilyScript score player — preview + transport. Light theme to match Gradio Soft. */

/* Gradio's `.gradio-container .prose * { color: var(--body-text-color) }` sets a
   color DIRECTLY on every descendant of our mount, overriding anything we set by
   inheritance and out-specifying a plain class. We mount under id #ls-score, so
   prefixing our color rules with that id (specificity beats two classes) lets them
   win WITHOUT !important. This base rule pins the default text color for the whole
   subtree; the specific rules below override per element. (The SVG ink color is a
   separate concern — see the `.ls-svg svg` block.) */
#ls-score, #ls-score :where(.ls-status, .ls-btn, .ls-time, .ls-err-pre, span, div, button) {
	color: #333;
}

.ls-score-root {
	display: flex;
	flex-direction: column;
	height: 100%;
	min-height: 600px;
}

.ls-preview {
	flex: 1;
	overflow: auto;
	background: #fafafa;
	border: 1px solid #e5e5e5;
	border-radius: 8px;
	padding: 12px;
	position: relative;
}

#ls-score .ls-status {
	font-size: 12px;
	color: #888;
	min-height: 16px;
	margin-bottom: 4px;
}
#ls-score .ls-status.ls-busy { color: #2b7; }
#ls-score .ls-status.ls-err { color: #c0392b; }
/* multi-line parse errors: preserve the caret alignment, wrap overflow. */
#ls-score .ls-status.ls-err .ls-err-pre {
	margin: 0;
	font-family: ui-monospace, Consolas, Monaco, monospace;
	font-size: 11px;
	line-height: 1.35;
	white-space: pre-wrap;
	word-break: break-word;
	color: #c0392b;
}

.ls-svg {
	background: #fff;
	display: inline-block;
	min-width: 100%;
	position: relative;    /* anchor for the absolutely-positioned playback cursor */
}
/* faint warm/yellow tint behind the score while generating */
.ls-svg.ls-generating-bg {
	background: #fffdf2;
}
.ls-svg svg {
	max-width: 100%;
	height: auto;
}
/* Stacked Verovio pages (a long score paginates into several SVGs). Each page is a
   block so they stack vertically; a small gap separates pages. */
.ls-svg .ls-svg-page {
	display: block;
	margin: 0 auto 8px;
}
.ls-svg .ls-svg-page:last-of-type {
	margin-bottom: 0;
}
/* Playback cursor: a vertical line tracking the currently-sounding note. */
.ls-cursor {
	position: absolute;
	width: 2px;
	background: rgba(124, 92, 255, 0.85);
	pointer-events: none;
	z-index: 5;
	display: none;
	transition: left 0.06s linear;
}
/* Verovio draws everything with stroke|fill="currentColor", which resolves to the
   computed `color`. We can't rely on inheritance from a container `color`: Gradio's
   `.prose * { color: var(--body-text-color) }` sets color DIRECTLY on every
   descendant (so it wins over an inherited value), which under the dark theme is a
   light grey — leaving staff lines, bar lines and the per-system left brace/bracket
   (grpSym) too pale. Force a dark `color` on the whole svg subtree (high enough
   specificity + !important to beat `.prose *`), and pin stroke on the line elements
   as belt-and-suspenders. */
.ls-svg svg,
.ls-svg svg * {
	color: #1a1a1a !important;
}
.ls-svg svg .staff path,
.ls-svg svg .barLine path,
.ls-svg svg .ledgerLines path,
.ls-svg svg .grpSym path {
	stroke: #1a1a1a;
}

/* playing-note highlight on the SVG */
.ls-hl {
	fill: #ff6b35 !important;
	stroke: #ff6b35 !important;
}

/* transport bar */
.ls-player {
	display: flex;
	align-items: center;
	gap: 10px;
	padding: 8px 12px;
	margin-bottom: 8px;
	background: #f3f3f5;
	border: 1px solid #e5e5e5;
	border-radius: 8px;
}

#ls-score .ls-btn {
	border: 1px solid #d0d0d6;
	background: #fff;
	color: #333;
	width: 30px;
	height: 30px;
	border-radius: 6px;
	cursor: pointer;
	font-size: 13px;
	line-height: 1;
	display: inline-flex;
	align-items: center;
	justify-content: center;
}
#ls-score .ls-btn:hover:not(:disabled) { border-color: #8aa; background: #f0f6ff; }
#ls-score .ls-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* Loading state on the play button: while the sound library / MIDI player is still
   loading, hide the ▶ glyph and spin a small ring in its place. Kept fully opaque
   (overriding :disabled's dim) so the animation reads as "working", not just greyed.
   The button stays disabled (cursor: wait) — clicking does nothing until ready. */
#ls-score .ls-btn.ls-loading {
	opacity: 1;
	cursor: wait;
	color: transparent;            /* hide the ▶ text glyph without reflow */
	position: relative;
}
#ls-score .ls-btn.ls-loading::after {
	content: '';
	position: absolute;
	width: 14px;
	height: 14px;
	border: 2px solid #c9c9d2;
	border-top-color: #7c5cff;     /* accent matches the progress fill */
	border-radius: 50%;
	animation: ls-spin 0.7s linear infinite;
}
@keyframes ls-spin {
	to { transform: rotate(360deg); }
}
/* Respect reduced-motion: pulse the ring opacity instead of spinning. */
@media (prefers-reduced-motion: reduce) {
	#ls-score .ls-btn.ls-loading::after {
		animation: ls-sf-pulse 1.4s ease-in-out infinite;
	}
}

#ls-score .ls-time {
	font-family: ui-monospace, Consolas, monospace;
	font-size: 12px;
	color: #555;
	min-width: 88px;
}

.ls-progress {
	flex: 1;
	height: 6px;
	background: #ddd;
	border-radius: 3px;
	cursor: pointer;
	overflow: hidden;
}
.ls-fill {
	height: 100%;
	width: 0;
	background: #7c5cff;
	transition: width 0.1s linear;
}

/* Sound-library status badge in the transport bar. While the GM soundfont loads:
   dimmed + grayscaled + pulsing 🎹 (the small grand-piano fallback is audible).
   Once ready: full-color 🎹 with a green ✓, shown 2s then faded out (hover reveals). */
#ls-score .ls-sf {
	position: relative;
	font-size: 14px;
	line-height: 1;
	margin-left: 2px;
	flex: 0 0 auto;
	cursor: default;
	opacity: 0.45;
	filter: grayscale(1);
	animation: ls-sf-pulse 1.4s ease-in-out infinite;
}
#ls-score .ls-sf.ready {
	opacity: 1;
	filter: none;
	animation: none;
}
@keyframes ls-sf-pulse {
	0%, 100% { opacity: 0.30; }
	50%      { opacity: 0.65; }
}
/* green ✓ badge superscript on the ready piano */
#ls-score .ls-sf .ls-sf-check {
	display: none;
	position: absolute;
	top: -0.4em;
	right: -0.7em;
	font-size: 0.85em;
	font-weight: 700;
	color: #3fb950;
	text-shadow: 0 0 2px rgba(0, 0, 0, 0.4);
}
#ls-score .ls-sf.ready .ls-sf-check {
	display: inline;
}

/* In-panel renderer-loading overlay: shown inside the freshly-mounted score panel
   while the 7.6MB verovio bundle is still downloading (score-player.js mounts early,
   before verovio finishes — see app.py head order). Mirrors the static placeholder
   spinner so the loading feedback is continuous across the mount handover. Removed
   (display:none) once verovio is ready or a score has rendered. */
#ls-score .ls-renderer-loading {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	min-height: 240px;
	color: #999;
	text-align: center;
}
#ls-score .ls-renderer-loading .ls-loading-spinner {
	width: 38px;
	height: 38px;
	margin-bottom: 14px;
	border: 4px solid #e3e3ea;
	border-top-color: #7c5cff;
	border-radius: 50%;
	animation: ls-spin 0.8s linear infinite;
}
#ls-score .ls-renderer-loading .ls-loading-text {
	font-size: 14px;
}
@media (prefers-reduced-motion: reduce) {
	#ls-score .ls-renderer-loading .ls-loading-spinner {
		animation: ls-spin 2.4s linear infinite;
	}
}

/* Empty-state placeholder: large staff/clef icon + prompt, shown when the renderer is
   ready but no score is loaded (fresh page or cleared editor). Keeps the panel from
   sitting blank. Absolutely fills the preview area so the icon + text sit dead-center
   (the panel is much taller than the content, so flex-centering a normal-flow block
   would only center within its own small box, leaving it near the top). */
#ls-score .ls-empty {
	position: absolute;
	inset: 0;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	padding: 24px;
	text-align: center;
	user-select: none;
	pointer-events: none;   /* don't block clicks meant for the panel underneath */
}
#ls-score .ls-empty .ls-empty-icon {
	width: 132px;
	height: 88px;
	margin-bottom: 18px;
	color: #7c5cff;         /* vivid accent (matches the app's purple), not a faint grey */
	opacity: 0.92;
}
#ls-score .ls-empty .ls-empty-text {
	font-size: 13px;
	max-width: 300px;
	line-height: 1.5;
	color: #c4c4cc;         /* lighter than the icon so the icon reads as the focal point */
}

/* Renderer-load FAILURE state (network error): shown inside the loading overlay in
   place of the spinner. A clickable ⟳ retry icon + prompt; re-fetches verovio. */
#ls-score .ls-renderer-error {
	display: flex;
	flex-direction: column;
	align-items: center;
	text-align: center;
}
#ls-score .ls-retry-btn {
	width: 52px;
	height: 52px;
	margin-bottom: 14px;
	border: none;
	border-radius: 50%;
	background: #f0ecff;
	color: #7c5cff;
	cursor: pointer;
	display: flex;
	align-items: center;
	justify-content: center;
	transition: background 0.15s, transform 0.15s;
}
#ls-score .ls-retry-btn:hover { background: #e2dbff; transform: scale(1.05); }
#ls-score .ls-retry-btn:active { transform: scale(0.97); }
#ls-score .ls-retry-icon { font-size: 30px; line-height: 1; }
#ls-score .ls-renderer-error .ls-retry-text {
	font-size: 13px;
	max-width: 300px;
	line-height: 1.5;
	color: #c0392b;
}

/* Soundfont (gm.sf3) load FAILURE: the 🎹 badge becomes a clickable retry. The base
   glyph is dimmed and a ⟳ overlay is shown on top; click handler calls retrySoundfont. */
#ls-score .ls-sf .ls-sf-retry {
	display: none;
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	font-size: 0.95em;
	font-weight: 700;
	color: #c0392b;
}
#ls-score .ls-sf.ls-sf-err {
	cursor: pointer;
	animation: none;
	filter: grayscale(1);
	opacity: 0.85;
}
#ls-score .ls-sf.ls-sf-err .ls-sf-retry { display: inline; }
#ls-score .ls-sf.ls-sf-err .ls-sf-check { display: none; }