/** Color Variables */
* {
	/** Base colors */
	--dark-a0: #000000;
	--light-a0: #ffffff;

	/** Dark theme primary colors */
	--primary-a0: #287095;
	--primary-a10: #467fa0;
	--primary-a20: #5f8eac;
	--primary-a30: #779db7;
	--primary-a40: #8eadc3;
	--primary-a50: #a4bdcf;

	/** Dark theme surface colors */
	--surface-a0: #121212;
	--surface-a10: #282828;
	--surface-a20: #3f3f3f;
	--surface-a30: #575757;
	--surface-a40: #717171;
	--surface-a50: #8b8b8b;

	/** Dark theme tonal surface colors */
	--surface-tonal-a0: #171b1e;
	--surface-tonal-a10: #2c3033;
	--surface-tonal-a20: #434649;
	--surface-tonal-a30: #5b5e60;
	--surface-tonal-a40: #747779;
	--surface-tonal-a50: #8e9092;
}

/** Main Page Layout/Styling */
body {
	background-color: var(--surface-a0);
	color: var(--light-a0);
}

header {
	text-align: center;
}

footer {
	bottom: 0;
	width: 100%;
	height: 15px;
	border-top: 1px solid var(--surface-a30);
	text-align: center;
	padding: 5px 0px;
}

/** Form Styling */
.calculator-form {
	padding: 20px;
	margin: 12px;

	border: 2px solid var(--surface-a30);
	border-radius: 8px;

	font-size: large;
}

.form-container {
	display: flex;
	flex-direction: column;
}

.calculator-form input {
	width: 45px;
}

.form-header {
	font-size: 25px;
	padding-bottom: 5px;
}

.form-input-div {
	padding: 1px;
}

/** Controls Styling */
#buttons-div {
	display: flex;
	justify-content: center;
	align-items: center;
	gap: 10px;
}

/** Button Styling */
.btn {
	border: none;
	border-radius: 4px;
	background-color: var(--primary-a10);
	color: var(--dark-a0);
}
.btn {
	background-color: var(--primary-a20);
}
.btn {
	background-color: var(--primary-a0);
}

/** Calcutate Button Styling */
#calculate-btn {
	font-size: 26px;
	padding: 16px;
}

/** Reset Button Styling */
#reset-btn {
	font-size: 20px;
	padding: 10px;
}

/** Score Styling */
.hidden {
	visibility: hidden;
}

#score-display {
	padding: 5px;
}