styles.css

:root {
	--gap: 24px;
	--color-1: #f0fdf4;
	--color-2: #f1f5f9;
	--color-3: #cbd5e1;
	--color-4: #0ea5e9;
	--err-color: #dc2626;
	--warning-color: #f59e0b;
}

* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

body {
	min-width: 275px;
	min-height: 100dvh;
	display: flex;
	flex-direction: column;
}

main {
	flex: 1;
	display: flex;
	padding: var(--gap);
	height: fit-content;
}

form {
	align-self: center;
	padding: var(--gap);
	width: 550px;
	margin-inline: auto;
	background-color: var(--color-1);
	border-radius: 8px;
	box-shadow: 0 0 5px 0 rgba(0, 0, 0, 0.5);
}

form > h1 {
	text-align: center;
	margin-bottom: var(--gap);
}

form > div {
	margin-bottom: var(--gap);
}

label {
	display: block;
	margin-bottom: 8px;
}

input {
	width: 100%;
	padding: 8px 12px;
	font-size: 1rem;
	background-color: var(--color-2);
	border: 1px solid var(--color-3);
	border-radius: 5px;
}

input:focus {
	outline: none;
	border: 2px solid var(--color-4);
}

/* input:invalid {
	border-color: var(--err-color);
} */

input.invalid {
	border-color: var(--err-color);
}

.validation-msg {
	background-color: var(--err-color);
	color: white;
	font-size: 0.85rem;
	padding: 2px 4px;
	border-radius: 4px;
	display: none;
}

.show-err-msg {
	display: block;
}

form > div:last-child {
	display: flex;
	flex-wrap: wrap;
	gap: var(--gap);
	margin: 0;
}

button {
	outline: none;
	color: white;
	font-size: 1rem;
	font-weight: 550;
	padding: calc(var(--gap) / 2) var(--gap);
	border: none;
	border-radius: 5px;
	cursor: pointer;
}

#submitBtn {
	flex: 10;
	background-color: var(--color-4);
	min-width: 250px;
}

#resettBtn {
	background-color: var(--warning-color);
	flex: 1;
}

#submitBtn:hover,
#submitBtn:focus,
#resettBtn:hover,
#resettBtn:focus {
	filter: brightness(0.85);
}

#submitBtn:disabled,
#resettBtn:disabled {
	cursor: zoom-in;
	filter: brightness(0.7);
	opacity: 0.7;
}