/* Drumix Digital Trainer — isolated UI layer. */
:root {
	--pb-trainer-accent: #0a84ff;
	--pb-trainer-accent-strong: #0066cc;
	--pb-trainer-ink: #1d1d1f;
	--pb-trainer-muted: #6e6e73;
	--pb-trainer-card: #ffffff;
	--pb-trainer-soft: #f5f7fa;
	--pb-trainer-border: rgba(29, 29, 31, .12);
	--pb-trainer-shadow: 0 18px 52px rgba(28, 39, 55, .13);
}

#pbTrainerLaunchCard { display: none; }

body.pb-song-mode #pbTrainerLaunchCard {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 24px;
	box-sizing: border-box;
	width: calc(100% - 36px);
	max-width: 1180px;
	margin: 18px auto 12px;
	padding: 20px 22px;
	border: 1px solid rgba(10, 132, 255, .18);
	border-radius: 20px;
	background:
		radial-gradient(circle at 92% 18%, rgba(10, 132, 255, .15), transparent 34%),
		linear-gradient(135deg, #fff 0%, #f4f8ff 100%);
	box-shadow: 0 10px 34px rgba(22, 78, 140, .09);
	font-family: Lato, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body.pb-practice #pbTrainerLaunchCard { display: none !important; }

.pbTrainerLaunchCopy { min-width: 0; }
.pbTrainerLaunchActions {
	display: flex;
	flex: 0 0 auto;
	min-width: 230px;
	flex-direction: column;
	align-items: stretch;
	gap: 9px;
}
.pbTrainerDifficultAction {
	display: none;
	grid-template-columns: 1fr;
	gap: 4px;
	text-align: center;
}
.pbTrainerDifficultAction.pb-show { display: grid; }
.pbTrainerDifficultButton {
	min-height: 44px;
	padding: 0 17px;
	border: 1px solid rgba(10, 132, 255, .3);
	border-radius: 12px;
	background: rgba(10, 132, 255, .08);
	color: #0066cc;
	font: 800 14px/1 Lato, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
	cursor: pointer;
}
.pbTrainerDifficultButton:hover { background: rgba(10, 132, 255, .13); }
.pbTrainerDifficultMeta { color: var(--pb-trainer-muted); font-size: 12px; font-weight: 700; }
.pbTrainerLaunchBadge,
.pbTrainerDialogEyebrow {
	display: inline-flex;
	align-items: center;
	min-height: 25px;
	padding: 0 10px;
	border-radius: 999px;
	background: rgba(10, 132, 255, .1);
	color: #0066cc;
	font-size: 11px;
	font-weight: 800;
	letter-spacing: .05em;
	text-transform: uppercase;
}
.pbTrainerLaunchCard h2 { margin: 8px 0 4px; color: var(--pb-trainer-ink); font-size: clamp(20px, 2vw, 28px); line-height: 1.15; }
.pbTrainerLaunchCard p { margin: 0; color: var(--pb-trainer-muted); font-size: 15px; line-height: 1.45; }
.pbTrainerResumeText { margin-top: 7px !important; color: #0066cc !important; font-weight: 700; }
.pbTrainerLaunchButton,
.pbTrainerPrimary {
	min-height: 48px;
	padding: 0 22px;
	border: 0;
	border-radius: 13px;
	background: linear-gradient(180deg, #168bff, #0878e8);
	box-shadow: 0 8px 22px rgba(10, 132, 255, .25);
	color: #fff;
	font: 800 15px/1 Lato, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
	cursor: pointer;
	white-space: nowrap;
}
.pbTrainerLaunchButton:hover,
.pbTrainerPrimary:hover { background: linear-gradient(180deg, #2898ff, #006ed8); }
.pbTrainerLaunchButton:disabled { box-shadow: none; cursor: wait; opacity: .68; }
.pbTrainerLaunchButton:focus-visible,
.pbTrainerDifficultButton:focus-visible,
.pbTrainerDialog button:focus-visible,
.pbTrainerPanel button:focus-visible { outline: 3px solid rgba(10, 132, 255, .32); outline-offset: 2px; }

.pbTrainerPanel {
	position: relative;
	z-index: 3;
	box-sizing: border-box;
	width: 100%;
	margin: 0 0 16px;
	padding: 17px 18px 16px;
	border: 1px solid rgba(10, 132, 255, .22);
	border-radius: 18px;
	background:
		radial-gradient(circle at 94% 12%, rgba(10, 132, 255, .15), transparent 32%),
		linear-gradient(145deg, #fff, #f6f9fe);
	box-shadow: 0 10px 30px rgba(23, 72, 126, .1);
	color: var(--pb-trainer-ink);
	font-family: Lato, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
body:not(.pb-trainer-active) .pbTrainerPanel { display: none; }
.pbTrainerPanelTop { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.pbTrainerModeTitle {
	display: inline-flex;
	margin-bottom: 7px;
	color: #0066cc;
	font-size: 11px;
	font-weight: 900;
	letter-spacing: .07em;
	text-transform: uppercase;
}
.pbTrainerStageNo { color: #0066cc; font-size: 13px; font-weight: 900; letter-spacing: .02em; }
.pbTrainerTempo { color: var(--pb-trainer-muted); font-size: 13px; font-weight: 700; text-align: right; }
.pbTrainerPanel h2 { margin: 7px 0 4px; color: inherit; font-size: clamp(20px, 2.1vw, 27px); line-height: 1.16; }
.pbTrainerPanel > p { margin: 0; color: var(--pb-trainer-muted); font-size: 15px; line-height: 1.42; }
.pbTrainerPanel > .pbTrainerReason {
	margin: 8px 0 7px;
	padding: 9px 11px;
	border-radius: 10px;
	background: rgba(10, 132, 255, .08);
	color: #48647f;
	font-size: 13px;
}
.pbTrainerPanel > .pbTrainerPrepareStatus {
	margin-top: 11px;
	padding: 10px 12px;
	border-radius: 11px;
	background: rgba(10, 132, 255, .09);
	color: #35627f;
	font-size: 14px;
	font-weight: 800;
}
.pbTrainerMeters { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 14px; }
.pbTrainerMeters > div { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 6px 12px; }
.pbTrainerMeters span { color: var(--pb-trainer-muted); font-size: 12px; font-weight: 700; }
.pbTrainerMeters b { color: inherit; font-size: 12px; }
.pbTrainerMeters i { grid-column: 1 / -1; display: block; height: 6px; overflow: hidden; border-radius: 999px; background: rgba(120, 120, 128, .15); }
.pbTrainerMeters em { display: block; width: 0; height: 100%; border-radius: inherit; background: linear-gradient(90deg, #0a84ff, #55b7ff); transition: width .25s ease; }
.pbTrainerActions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-top: 15px; }
.pbTrainerActions button,
.pbTrainerSecondary {
	min-height: 42px;
	padding: 0 15px;
	border: 1px solid var(--pb-trainer-border);
	border-radius: 11px;
	background: rgba(255, 255, 255, .84);
	color: var(--pb-trainer-ink);
	font: 700 14px/1 Lato, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
	cursor: pointer;
}
.pbTrainerActions .pbTrainerNext { margin-left: auto; border-color: transparent; background: #0a84ff; color: #fff; }
.pbTrainerStageReady .pbTrainerNext { box-shadow: 0 7px 20px rgba(10, 132, 255, .28); animation: pbTrainerReady 1.5s ease-in-out infinite; }
.pbTrainerActions .pbTrainerFinish { border-color: transparent; background: transparent; color: var(--pb-trainer-muted); font-weight: 600; }
.pbTrainerActions button:disabled,
.pbTrainerMobileNext:disabled { cursor: wait; box-shadow: none; opacity: .48; animation: none; }
.pbTrainerActions .pbTrainerImprove,
.pbTrainerActions .pbTrainerKeep { display: none; }
.pbTrainerDifficultMode.pbTrainerPlaceReady .pbTrainerActions .pbTrainerImprove,
.pbTrainerDifficultMode.pbTrainerPlaceReady .pbTrainerActions .pbTrainerKeep { display: inline-flex; align-items: center; justify-content: center; }
.pbTrainerDifficultMode.pbTrainerPlaceReady .pbTrainerActions .pbTrainerImprove { border-color: rgba(52, 199, 89, .3); background: rgba(52, 199, 89, .1); color: #197b34; }
.pbTrainerDifficultMode.pbTrainerPlaceReady .pbTrainerActions .pbTrainerKeep { color: var(--pb-trainer-muted); }
@keyframes pbTrainerReady { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-1px); } }

.pbTrainerDialog {
	position: fixed;
	inset: 0;
	z-index: 220000;
	display: flex;
	align-items: center;
	justify-content: center;
	box-sizing: border-box;
	padding: max(18px, env(safe-area-inset-top, 0px)) max(18px, env(safe-area-inset-right, 0px)) max(18px, env(safe-area-inset-bottom, 0px)) max(18px, env(safe-area-inset-left, 0px));
	background: rgba(15, 23, 34, .5);
	-webkit-backdrop-filter: blur(14px);
	backdrop-filter: blur(14px);
	opacity: 0;
	visibility: hidden;
	transition: opacity .18s ease, visibility 0s linear .18s;
	font-family: Lato, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
.pbTrainerDialog.pb-open { opacity: 1; visibility: visible; transition-delay: 0s; }
.pbTrainerDialogCard {
	position: relative;
	box-sizing: border-box;
	width: min(100%, 540px);
	max-height: min(760px, calc(100vh - 36px));
	max-height: min(760px, calc(100dvh - 36px));
	overflow: auto;
	padding: 28px;
	border: 1px solid rgba(255, 255, 255, .38);
	border-radius: 23px;
	background: #fff;
	box-shadow: 0 28px 90px rgba(0, 0, 0, .3);
	color: var(--pb-trainer-ink);
}
.pbTrainerDialogClose {
	position: absolute;
	top: 14px;
	right: 14px;
	width: 36px;
	height: 36px;
	border: 0;
	border-radius: 50%;
	background: #f0f0f2;
	color: #5f6368;
	font: 400 25px/1 sans-serif;
	cursor: pointer;
}
.pbTrainerDialog h2 { margin: 12px 42px 10px 0; color: inherit; font-size: 28px; line-height: 1.14; }
.pbTrainerDialogBody { color: var(--pb-trainer-muted); font-size: 15px; line-height: 1.5; }
.pbTrainerDialogBody p { margin: 0 0 10px; }
.pbTrainerDialogLead { color: var(--pb-trainer-ink) !important; font-size: 17px; }
.pbTrainerDialogNote { padding: 10px 12px; border-radius: 11px; background: #f3f7fc; color: #526170 !important; font-size: 13px; }
.pbTrainerDailyPlan {
	display: grid;
	gap: 9px;
	margin: 16px 0;
	padding: 0;
	list-style: none;
	counter-reset: pbTrainerDaily;
}
.pbTrainerDailyPlan li {
	display: grid;
	grid-template-columns: 30px minmax(0, 1fr);
	gap: 10px;
	align-items: start;
	padding: 12px;
	border: 1px solid rgba(10, 132, 255, .13);
	border-radius: 13px;
	background: #f7faff;
	counter-increment: pbTrainerDaily;
}
.pbTrainerDailyPlan li::before {
	display: grid;
	place-items: center;
	width: 28px;
	height: 28px;
	border-radius: 50%;
	background: rgba(10, 132, 255, .12);
	color: #0066cc;
	font-size: 13px;
	font-weight: 900;
	content: counter(pbTrainerDaily);
}
.pbTrainerDailyPlan li > div { min-width: 0; }
.pbTrainerDailyPlan b,
.pbTrainerDailyPlan small,
.pbTrainerDailyMeta { display: block; }
.pbTrainerDailyPlan b { margin-top: 2px; color: var(--pb-trainer-ink); font-size: 16px; line-height: 1.25; }
.pbTrainerDailyPlan small { margin-top: 3px; color: var(--pb-trainer-muted); font-size: 13px; line-height: 1.35; }
.pbTrainerDailyMeta { color: #0066cc; font-size: 11px; font-weight: 800; letter-spacing: .02em; }
.pbTrainerDialogActions { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 22px; }
.pbTrainerDialogActions button { flex: 1 1 145px; }
.pbTrainerSummaryList { margin: 12px 0; padding-left: 21px; color: var(--pb-trainer-ink); }
.pbTrainerSummaryList li { margin: 5px 0; }
.pbTrainerSummaryStats { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; margin: 16px 0; }
.pbTrainerSummaryStats div { padding: 12px; border-radius: 12px; background: #f4f6f9; }
.pbTrainerSummaryStats span { display: block; color: var(--pb-trainer-muted); font-size: 12px; }
.pbTrainerSummaryStats b { display: block; margin-top: 3px; color: var(--pb-trainer-ink); font-size: 18px; }
.pbTrainerDifficultSummary {
	margin-top: 14px;
	padding: 14px 15px;
	border: 1px solid rgba(10, 132, 255, .16);
	border-radius: 14px;
	background: #f3f8ff;
}
.pbTrainerDifficultSummary h3 { margin: 0 0 5px; color: var(--pb-trainer-ink); font-size: 17px; line-height: 1.25; }
.pbTrainerDifficultSummary p { margin: 0 0 7px; }
.pbTrainerDifficultList { margin: 10px 0 0; padding-left: 20px; color: var(--pb-trainer-ink); }
.pbTrainerDifficultList li { margin: 5px 0; }

.pbTrainerToast {
	position: fixed;
	left: 50%;
	bottom: calc(26px + env(safe-area-inset-bottom, 0px));
	z-index: 230000;
	max-width: min(90vw, 520px);
	box-sizing: border-box;
	padding: 12px 16px;
	border-radius: 13px;
	background: rgba(28, 28, 30, .94);
	box-shadow: 0 12px 38px rgba(0, 0, 0, .25);
	color: #fff;
	font: 700 14px/1.4 Lato, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
	text-align: center;
	transform: translate(-50%, 12px);
	opacity: 0;
	transition: .2s ease;
}
.pbTrainerToast.pb-on { transform: translate(-50%, 0); opacity: 1; }

.pbTrainerMobileNext { display: none; }

body.pb-student-dark {
	--pb-trainer-ink: #f5f5f7;
	--pb-trainer-muted: #a1a1a6;
	--pb-trainer-card: #1c1c1e;
	--pb-trainer-soft: #2c2c2e;
	--pb-trainer-border: rgba(255, 255, 255, .12);
}
body.pb-student-dark.pb-song-mode #pbTrainerLaunchCard,
body.pb-student-dark .pbTrainerPanel {
	border-color: rgba(10, 132, 255, .28);
	background:
		radial-gradient(circle at 92% 16%, rgba(10, 132, 255, .18), transparent 35%),
		linear-gradient(145deg, #1c1c1e, #151518);
	box-shadow: 0 14px 42px rgba(0, 0, 0, .27);
}
body.pb-student-dark .pbTrainerLaunchBadge,
body.pb-student-dark .pbTrainerDialogEyebrow { background: rgba(10, 132, 255, .18); color: #64b5ff; }
body.pb-student-dark .pbTrainerResumeText,
body.pb-student-dark .pbTrainerStageNo,
body.pb-student-dark .pbTrainerModeTitle { color: #64b5ff !important; }
body.pb-student-dark .pbTrainerDifficultButton { border-color: rgba(100, 181, 255, .34); background: rgba(10, 132, 255, .15); color: #8ac8ff; }
body.pb-student-dark .pbTrainerActions button { background: #2c2c2e; color: #f5f5f7; }
body.pb-student-dark .pbTrainerActions .pbTrainerNext { background: #0a84ff; color: #fff; }
body.pb-student-dark .pbTrainerActions .pbTrainerFinish { background: transparent; color: #a1a1a6; }
body.pb-student-dark .pbTrainerDialogCard { border-color: rgba(255, 255, 255, .09); background: #1c1c1e; color: #f5f5f7; }
body.pb-student-dark .pbTrainerDialogClose { background: #2c2c2e; color: #f5f5f7; }
body.pb-student-dark .pbTrainerDialogLead,
body.pb-student-dark .pbTrainerSummaryList,
body.pb-student-dark .pbTrainerSummaryStats b { color: #f5f5f7 !important; }
body.pb-student-dark .pbTrainerDialogNote,
body.pb-student-dark .pbTrainerSummaryStats div { background: #2c2c2e; color: #c7c7cc !important; }
body.pb-student-dark .pbTrainerDailyPlan li { border-color: rgba(100, 181, 255, .18); background: rgba(10, 132, 255, .09); }
body.pb-student-dark .pbTrainerDailyPlan li::before { background: rgba(10, 132, 255, .2); color: #8ac8ff; }
body.pb-student-dark .pbTrainerDailyMeta { color: #8ac8ff; }
body.pb-student-dark .pbTrainerPanel > .pbTrainerReason { background: rgba(10, 132, 255, .15); color: #c3ddf5; }
body.pb-student-dark .pbTrainerPanel > .pbTrainerPrepareStatus { background: rgba(10, 132, 255, .15); color: #c3ddf5; }
body.pb-student-dark .pbTrainerDifficultSummary { border-color: rgba(100, 181, 255, .2); background: rgba(10, 132, 255, .1); }
body.pb-student-dark .pbTrainerDifficultMode.pbTrainerPlaceReady .pbTrainerActions .pbTrainerImprove { border-color: rgba(48, 209, 88, .34); background: rgba(48, 209, 88, .13); color: #78e493; }
body.pb-student-dark .pbTrainerSecondary { border-color: rgba(255, 255, 255, .13); background: #2c2c2e; color: #f5f5f7; }

@media (max-width: 760px) {
	body.pb-song-mode #pbTrainerLaunchCard {
		width: calc(100% - 20px);
		margin: 10px auto;
		padding: 16px;
		border-radius: 17px;
		align-items: stretch;
		flex-direction: column;
		gap: 13px;
	}
	.pbTrainerLaunchActions { width: 100%; min-width: 0; }
	.pbTrainerLaunchCard h2 { font-size: 21px; }
	.pbTrainerLaunchCard p { font-size: 14px; }
	.pbTrainerLaunchButton { width: 100%; }
	.pbTrainerPanel { margin-bottom: 12px; padding: 14px; border-radius: 16px; }
	.pbTrainerPanel h2 { font-size: 21px; }
	.pbTrainerPanel > p { font-size: 14px; }
	.pbTrainerMeters { grid-template-columns: 1fr; gap: 9px; }
	.pbTrainerActions { display: grid; grid-template-columns: 1fr 1fr; }
	.pbTrainerActions button { width: 100%; min-height: 44px; padding: 0 10px; }
	.pbTrainerActions .pbTrainerNext { margin-left: 0; grid-column: 1 / -1; grid-row: 1; }
	.pbTrainerDifficultMode.pbTrainerPlaceReady .pbTrainerActions .pbTrainerImprove,
	.pbTrainerDifficultMode.pbTrainerPlaceReady .pbTrainerActions .pbTrainerKeep { grid-column: 1 / -1; }
	.pbTrainerActions .pbTrainerFinish { grid-column: 1 / -1; }
	.pbTrainerDialogCard { padding: 23px 18px 20px; border-radius: 20px; }
	.pbTrainerDialog h2 { font-size: 24px; }
	.pbTrainerSummaryStats { grid-template-columns: 1fr 1fr; }
	body.pb-trainer-active .pbTrainerMobileNext.pb-show {
		display: block;
		position: fixed;
		right: max(12px, env(safe-area-inset-right, 0px));
		bottom: calc(78px + env(safe-area-inset-bottom, 0px));
		z-index: 190000;
		min-height: 46px;
		padding: 0 16px;
		border: 0;
		border-radius: 14px;
		background: #0a84ff;
		box-shadow: 0 12px 34px rgba(0, 70, 160, .35);
		color: #fff;
		font: 800 14px/1 Lato, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
	}
}

@media (max-width: 420px) {
	.pbTrainerPanelTop { align-items: flex-start; }
	.pbTrainerTempo { max-width: 48%; }
	.pbTrainerDialogActions { flex-direction: column; }
	.pbTrainerDialogActions button { flex-basis: auto; width: 100%; }
	.pbTrainerSummaryStats { grid-template-columns: 1fr; }
}

@media (orientation: landscape) and (max-height: 520px) and (max-width: 980px) {
	.pbTrainerDialog { align-items: flex-start; overflow: auto; }
	.pbTrainerDialogCard { max-height: none; }
	body.pb-trainer-active .pbTrainerMobileNext.pb-show { bottom: calc(60px + env(safe-area-inset-bottom, 0px)); }
}

@media (prefers-reduced-motion: reduce) {
	.pbTrainerStageReady .pbTrainerNext { animation: none; }
	.pbTrainerDialog,
	.pbTrainerToast,
	.pbTrainerMeters em { transition: none; }
}