/* 
 * AccessibleFileUploader CSS
 * A screen reader-friendly file uploader with drag and drop support
 * Created: May 29, 2025
 */

/* Uploader styles */
.file-uploader {
	width: 100%;
	margin-bottom: 20px;
}

/* Dropzone styles */
.file-uploader__dropzone {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	height: 150px;
	border: 2px dashed #ccc;
	border-radius: 5px;
	background-color: #f8f8f8;
	transition: border-color 0.3s, background-color 0.3s;
	margin-bottom: 20px;
	cursor: pointer;
	padding: 20px;
	text-align: center;
}

.file-uploader__dropzone:hover,
.file-uploader__dropzone:focus {
	border-color: #6c7ae0;
	background-color: #f0f2ff;
	outline: none;
}

.file-uploader__dropzone--active {
	border-color: #3f51b5;
	background-color: #e8eaf6;
	position: relative;
}

/* New error state for dropzone */
.file-uploader__dropzone--error {
	border-color: #d32f2f;
	background-color: #ffebee;
}

.file-uploader__instructions {
	color: #555;
}

.file-uploader__accessibility-note {
	font-size: 0.85rem;
	color: #777;
	margin-top: 10px;
}

/* Accessibility helper class for screen-reader only content */
.sr-only {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	border: 0;
}

/* Hide file input visually but keep it accessible */
.file-uploader__input {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	border: 0;
}

/* File list styles */
.file-uploader__file-list {
	list-style: none;
	padding: 0;
	margin: 0 0 20px 0;
}

.file-uploader__file-item {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	padding: 10px;
	border-bottom: 1px solid #eee;
	position: relative;
}

.file-uploader__file-item:last-child {
	border-bottom: none;
}

.file-uploader__file-name {
	flex: 1;
	margin-right: 10px;
	word-break: break-all;
}

.file-uploader__file-size {
	color: #777;
	margin-right: 10px;
	white-space: nowrap;
}

.file-uploader__progress-container {
	height: 5px;
	width: 100%;
	background-color: #f0f0f0;
	border-radius: 3px;
	margin: 5px 0;
	overflow: hidden;
}

.file-uploader__progress-bar {
	height: 100%;
	background-color: #4caf50;
	width: 0;
	transition: width 0.3s;
}

.file-uploader__remove-button {
	background-color: #f44336;
	color: white;
	border: none;
	border-radius: 3px;
	padding: 5px 10px;
	cursor: pointer;
	font-size: 0.8rem;
	transition: background-color 0.3s;
}

.file-uploader__remove-button:hover,
.file-uploader__remove-button:focus {
	background-color: #d32f2f;
	outline: none;
}

/* Status colors */
.file-uploader__file-item--uploading .file-uploader__progress-bar {
	background-color: #2196f3;
}

.file-uploader__file-item--success .file-uploader__progress-bar {
	background-color: #4caf50;
}

.file-uploader__file-item--error .file-uploader__progress-bar {
	background-color: #f44336;
}

/* Upload button */
.file-uploader__upload-button {
	display: block;
	width: 100%;
	padding: 10px;
	background-color: #4caf50;
	color: white;
	border: none;
	border-radius: 5px;
	cursor: pointer;
	font-size: 1rem;
	transition: background-color 0.3s;
}

/* Clear all button */
.file-uploader__clear-button {
	display: none;
	padding: 8px 15px;
	margin: 10px 0;
	background-color: #f44336;
	color: white;
	border: none;
	border-radius: 5px;
	cursor: pointer;
	font-size: 0.9rem;
	transition: background-color 0.3s;
}

.file-uploader__clear-button:hover,
.file-uploader__clear-button:focus {
	background-color: #d32f2f;
	outline: none;
}

.file-uploader__upload-button:hover,
.file-uploader__upload-button:focus {
	background-color: #388e3c;
	outline: none;
}

.file-uploader__upload-button:disabled {
	background-color: #9e9e9e;
	cursor: not-allowed;
}

/* Status area for screen readers */
.file-uploader__status {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	border: 0;
}

/* Error message styles for the file uploader */
.file-uploader__error {
	display: none;
	color: #fff;
	background-color: #d32f2f;
	padding: 10px 15px;
	border-radius: 4px;
	margin-bottom: 15px;
	font-size: 0.9rem;
	position: relative;
	animation: fadeIn 0.3s ease-in-out;
	box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
	align-items: center;
	gap: 10px;
}

.file-uploader__error-icon {
	font-size: 1.2rem;
}

@keyframes fadeIn {
	from {
		opacity: 0;
		transform: translateY(-10px);
	}

	to {
		opacity: 1;
		transform: translateY(0);
	}
}

/* Mobile responsiveness */
@media (max-width: 768px) {
	.file-uploader__dropzone {
		height: 120px;
		padding: 15px;
	}
	
	.file-uploader__file-item {
		flex-direction: column;
		align-items: flex-start;
		padding: 15px 10px;
	}
	
	.file-uploader__file-name {
		margin-bottom: 5px;
		width: 100%;
	}
	
	.file-uploader__file-size {
		margin-bottom: 10px;
	}
	
	.file-uploader__remove-button {
		width: 100%;
		text-align: center;
		padding: 8px;
		margin-top: 5px;
	}

	.file-uploader__instructions p {
		font-size: 0.9rem;
	}
	
	.file-uploader__accessibility-note {
		font-size: 0.8rem;
	}
}

/* Accessibility and focus indicators */
.file-uploader__remove-button:focus-visible {
	outline: 3px solid #3f51b5;
	outline-offset: 2px;
}

.file-uploader__dropzone:focus-visible {
	outline: 3px solid #3f51b5;
	outline-offset: 2px;
}

/* Drag and drop visual helper */
.file-uploader__dropzone::after {
	content: '';
	display: none;
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	background: rgba(63, 81, 181, 0.1);
	border: 2px dashed #3f51b5;
	border-radius: 3px;
	pointer-events: none;
}

.file-uploader__dropzone--active::after {
	display: block;
	animation: pulse 1.5s infinite;
}

@keyframes pulse {
	0% { opacity: 0.5; }
	50% { opacity: 0.8; }
	100% { opacity: 0.5; }
}