* {
	box-sizing: border-box;
}

body {
	display: grid;
	place-items: center;
	min-height: 100vh;
	margin: 0;
	padding: 1.5rem;
	background: #f4f4f6;
	font-family: system-ui, sans-serif;
	color: #1c1c22;
}

.card {
	width: min(26rem, 100%);
	padding: 2rem;
	border-radius: 1.5rem;
	background: #ffffff;
	box-shadow: 0 10px 30px -15px rgb(0 0 0 / 0.25);
}

.signup-title {
	margin: 0 0 1.5rem;
	font-size: 1.5rem;
}

.field {
	margin-bottom: 1.25rem;
}

.field label {
	display: block;
	margin-bottom: 0.375rem;
	font-weight: 600;
}

.hint {
	margin: 0 0 0.5rem;
	font-size: 0.875rem;
	color: #6b6b76;
}

.field input {
	width: 100%;
	padding: 0.625rem 0.875rem;
	border: 2px solid #c8c8d0;
	border-radius: 0.75rem;
	font: inherit;
}

.field input:focus-visible {
	border-color: #1c1c22;
	outline: 3px solid #2563eb;
	outline-offset: 2px;
}

.submit {
	width: 100%;
	padding: 0.75rem;
	border: 0;
	border-radius: 999px;
	background: #1c1c22;
	font: inherit;
	font-weight: 600;
	color: #ffffff;
	cursor: pointer;
}

.submit:hover {
	background: #3a3a44;
}

.submit:focus-visible {
	outline: 3px solid #2563eb;
	outline-offset: 3px;
}

.success:focus {
	outline: none;
}

.success p {
	margin: -0.75rem 0 0;
	color: #4b4b55;
}

/* :user-invalid waits until a field is used; :invalid would flag it at once. */
.field input:user-invalid {
	border-color: #b91c1c;
}