* {
	box-sizing: border-box;
}

html,
body {
	min-block-size: 100%;
	margin: 0;
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}


.sign-in-page {
	display: grid;
	place-items: center;
	min-block-size: 100vh;
	padding: 24px;
	background-color: #212529 !important;
	background-image: none !important;
}

.sign-in-card {
	inline-size: min(100%, 420px);
	padding: 40px;
	border-radius: 12px;
	background: white;
	box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
}

.sign-in-card h1 {
	margin-block-end: 8px;
	color: #212529;
	font-size: 2rem;
	text-align: center;
}

.sign-in-subtitle {
	margin-block-end: 30px;
	color: #6c757d;
	text-align: center;
}

.sign-in-form label {
	color: #212529;
	font-weight: 600;
}

.sign-in-form .form-control {
	block-size: 48px;
}

.role-selection {
	margin: 0 0 24px;
	padding: 0;
	border: 0;
}

.role-selection legend {
	margin-block-end: 10px;
	color: #212529;
	font-size: 1rem;
	font-weight: 600;
}

.role-options {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 12px;
}

.role-option {
	display: flex;
	align-items: center;
	gap: 8px;
	margin: 0;
	padding: 12px;
	border: 1px solid #ced4da;
	border-radius: 6px;
	color: #212529;
	cursor: pointer;
}

.role-option:has(input:checked) {
	border-color: #212529;
	background: #f1f3f5;
}

.sign-in-button {
	inline-size: 100%;
	margin-block-start: 8px;
	padding-block: 12px;
	background: #212529;
	color: white;
	font-weight: 600;
}

.sign-in-button:hover {
	background: #343a40;
	color: white;
}

.sign-up-prompt {
	margin: 24px 0 0;
	color: #6c757d;
	text-align: center;
}

.sign-up-prompt a {
	color: #212529;
	font-weight: 600;
}

/* Accessibility & Mobile Responsiveness */
.sign-in-form .form-control:focus-visible,
.sign-in-button:focus-visible,
.role-option:focus-within {
	outline: 2px solid #212529;
	outline-offset: 2px;
}

@media (max-width: 480px) {
	.sign-in-page {
		padding: 16px;
	}

	.sign-in-card {
		padding: 28px 20px;
		border-radius: 16px;
	}

	.sign-in-card h1 {
		font-size: 1.65rem;
	}

	.role-options {
		grid-template-columns: 1fr;
		gap: 8px;
	}

	.role-option {
		padding: 14px 16px;
		min-height: 48px;
	}

	.sign-in-button {
		min-height: 48px;
		padding: 12px;
		font-size: 1rem;
	}

	.sign-in-form .form-control {
		font-size: 16px; /* Prevents auto-zoom on iOS Safari */
		height: 48px;
	}
}