.vsc-course-player-calculator {
	--vsc-calculator-outer-bg: #ffffff;
	--vsc-calculator-shell-bg: #d80000;
	--vsc-calculator-screen-bg: #ffffff;
	--vsc-calculator-button-bg: #ffffff;
	--vsc-calculator-button-text: #3e3e3e;
	--vsc-calculator-button-border: #d80000;
	--vsc-calculator-shadow: 0 18px 48px rgba(15, 23, 42, 0.2);
	position: fixed;
	right: 24px;
	bottom: 24px;
	z-index: 99999;
}

.vsc-course-player-calculator.vsc-course-player-calculator_dark {
	--vsc-calculator-outer-bg: #eff3f8;
	--vsc-calculator-shell-bg: #cb1010;
	--vsc-calculator-screen-bg: #ffffff;
	--vsc-calculator-button-bg: #ffffff;
	--vsc-calculator-button-text: #2f3848;
	--vsc-calculator-button-border: #cb1010;
	--vsc-calculator-shadow: 0 24px 48px rgba(2, 6, 23, 0.45);
}

.vsc-course-player-calculator__launcher-slot {
	display: flex;
	align-items: center;
	align-self: stretch;
}

.vsc-course-player-calculator__launcher {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 72px;
	height: 72px;
	margin: 0;
	padding: 0;
	border: 0 !important;
	border-radius: 0;
	background: transparent !important;
	color: #3f4858;
	cursor: pointer;
	box-shadow: none;
	appearance: none;
	-webkit-appearance: none;
	-webkit-tap-highlight-color: transparent;
	transition: color 0.18s ease, transform 0.18s ease;
}

.vsc-course-player-calculator__launcher:hover,
.vsc-course-player-calculator__launcher:focus,
.vsc-course-player-calculator__launcher:focus-visible,
.vsc-course-player-calculator__launcher:active,
.vsc-course-player-calculator_open .vsc-course-player-calculator__launcher {
	background: transparent !important;
	border-color: transparent !important;
	color: #8a2424;
	transform: translateY(-1px);
	outline: none;
	box-shadow: none !important;
}

.vsc-course-player-calculator__launcher svg {
	width: 24px;
	height: 24px;
	fill: currentColor;
}

.vsc-course-player-calculator__panel {
	position: fixed;
	left: auto;
	top: auto;
	width: min(320px, calc(100vw - 32px));
	padding: 10px 10px 14px;
	border-radius: 20px;
	background: var(--vsc-calculator-outer-bg);
	box-shadow: var(--vsc-calculator-shadow);
	opacity: 0;
	pointer-events: none;
	transform: translateY(12px) scale(0.98);
	transition: opacity 0.2s ease, transform 0.2s ease;
	touch-action: none;
}

.vsc-course-player-calculator_open .vsc-course-player-calculator__panel {
	opacity: 1;
	pointer-events: auto;
	transform: translateY(0) scale(1);
}

.vsc-course-player-calculator__panel_dragging {
	cursor: grabbing;
	user-select: none;
}

.vsc-course-player-calculator__close {
	display: block;
	margin: 0 0 8px auto;
	padding: 0;
	border: 0;
	background: transparent;
	color: #353535;
	font-size: 34px;
	line-height: 0.8;
	cursor: pointer;
}

.vsc-course-player-calculator__shell {
	max-width: 260px;
	margin: 0 auto;
	padding: 8px;
	border: 3px solid #7f7f7f;
	border-radius: 14px;
	background: var(--vsc-calculator-shell-bg);
}

.vsc-course-player-calculator__screen {
	margin-bottom: 8px;
	padding: 8px;
	background: var(--vsc-calculator-screen-bg);
	border-radius: 4px;
	min-height: 62px;
}

.vsc-course-player-calculator__expression {
	min-height: 14px;
	font-size: 12px;
	line-height: 1.2;
	color: #6d6d6d;
	text-align: right;
}

.vsc-course-player-calculator__result {
	min-height: 30px;
	margin-top: 6px;
	font-size: 24px;
	line-height: 1.1;
	color: #3f3f3f;
	text-align: right;
	word-break: break-all;
}

.vsc-course-player-calculator__keys {
	display: grid;
	grid-template-columns: repeat(4, minmax(0, 1fr));
	gap: 2px;
	background: var(--vsc-calculator-button-border);
}

.vsc-course-player-calculator__key {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-height: 52px;
	padding: 0 6px;
	border: 0;
	background: var(--vsc-calculator-button-bg);
	color: var(--vsc-calculator-button-text);
	font-size: 16px;
	font-weight: 400;
	cursor: pointer;
	transition: background-color 0.15s ease, color 0.15s ease;
}

.vsc-course-player-calculator__key:hover,
.vsc-course-player-calculator__key:focus-visible {
	background: #f4f4f4;
	outline: none;
}

.vsc-course-player-calculator__key_zero {
	grid-column: span 2;
}

.vsc-course-player-calculator__key_equals {
	font-size: 20px;
}

@media (max-width: 767px) {
	.vsc-course-player-calculator__launcher-slot {
		display: none;
	}

	.vsc-course-player-calculator {
		right: 16px;
		bottom: 16px;
	}

	.vsc-course-player-calculator__panel {
		width: min(70vw, 360px);
		max-width: min(70vw, 360px);
		padding: 12px 12px 16px;
	}

	.vsc-course-player-calculator__close {
		font-size: 36px;
	}

	.vsc-course-player-calculator__shell {
		max-width: none;
		padding: 10px;
	}

	.vsc-course-player-calculator__screen {
		min-height: 72px;
		padding: 10px;
	}

	.vsc-course-player-calculator__expression {
		font-size: 13px;
	}

	.vsc-course-player-calculator__result {
		font-size: 28px;
	}

	.vsc-course-player-calculator__key {
		min-height: 58px;
		font-size: 18px;
	}
}