/**
 * CDR Converter - Frontend Styles
 * Modern SaaS / glassmorphism design, dark-mode aware, fully responsive.
 */

.cdr-converter-widget {
	--cdr-primary: #4f6df5;
	--cdr-primary-dark: #3b52d1;
	--cdr-gradient: linear-gradient(135deg, #4f6df5 0%, #7c5cf5 100%);
	--cdr-success: #16a34a;
	--cdr-error: #dc2626;
	--cdr-bg: #ffffff;
	--cdr-bg-soft: #f6f8fc;
	--cdr-border: #e4e8f2;
	--cdr-text: #1a1d29;
	--cdr-text-muted: #6b7280;
	--cdr-radius: 18px;
	--cdr-radius-sm: 10px;
	--cdr-shadow: 0 10px 40px rgba(31, 41, 55, 0.08);
	--cdr-shadow-hover: 0 16px 50px rgba(31, 41, 55, 0.14);

	max-width: 560px;
	margin: 2rem auto;
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
	box-sizing: border-box;
}

@media (prefers-color-scheme: dark) {
	.cdr-converter-widget {
		--cdr-bg: #161822;
		--cdr-bg-soft: #1e2130;
		--cdr-border: #2b2f42;
		--cdr-text: #f2f3f7;
		--cdr-text-muted: #9aa0b4;
		--cdr-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
		--cdr-shadow-hover: 0 16px 50px rgba(0, 0, 0, 0.45);
	}
}

.cdr-converter-widget *,
.cdr-converter-widget *::before,
.cdr-converter-widget *::after {
	box-sizing: border-box;
}

.cdr-card {
	background: color-mix(in srgb, var(--cdr-bg) 88%, transparent);
	backdrop-filter: blur(14px);
	-webkit-backdrop-filter: blur(14px);
	border: 1px solid var(--cdr-border);
	border-radius: var(--cdr-radius);
	box-shadow: var(--cdr-shadow);
	padding: clamp(1.5rem, 4vw, 2.5rem);
	transition: box-shadow 0.3s ease;
}

.cdr-card:hover {
	box-shadow: var(--cdr-shadow-hover);
}

.cdr-title {
	margin: 0 0 0.5rem;
	font-size: clamp(1.25rem, 3vw, 1.6rem);
	font-weight: 700;
	color: var(--cdr-text);
	letter-spacing: -0.02em;
}

.cdr-description {
	margin: 0 0 1.75rem;
	color: var(--cdr-text-muted);
	font-size: 0.95rem;
	line-height: 1.5;
}

.cdr-dropzone {
	position: relative;
	border: 2px dashed var(--cdr-border);
	border-radius: var(--cdr-radius-sm);
	background: var(--cdr-bg-soft);
	padding: clamp(1.75rem, 5vw, 2.75rem) 1.25rem;
	text-align: center;
	cursor: pointer;
	transition: border-color 0.25s ease, background 0.25s ease, transform 0.15s ease;
}

.cdr-dropzone:hover,
.cdr-dropzone:focus-visible {
	border-color: var(--cdr-primary);
	background: color-mix(in srgb, var(--cdr-primary) 6%, var(--cdr-bg-soft));
	outline: none;
}

.cdr-dropzone.is-dragover {
	border-color: var(--cdr-primary);
	background: color-mix(in srgb, var(--cdr-primary) 10%, var(--cdr-bg-soft));
	transform: scale(1.01);
}

.cdr-upload-icon {
	color: var(--cdr-primary);
	margin-bottom: 0.5rem;
}

.cdr-dropzone-text {
	margin: 0.25rem 0 0.25rem;
	font-size: 0.98rem;
	color: var(--cdr-text);
}

.cdr-browse-link {
	color: var(--cdr-primary);
	font-weight: 600;
	text-decoration: underline;
}

.cdr-dropzone-hint {
	margin: 0.25rem 0 0;
	font-size: 0.8rem;
	color: var(--cdr-text-muted);
}

.cdr-file-input {
	position: absolute;
	inset: 0;
	width: 100%;
	height: 100%;
	opacity: 0;
	cursor: pointer;
}

.cdr-file-preview {
	display: flex;
	align-items: center;
	justify-content: space-between;
	margin-top: 1rem;
	padding: 0.85rem 1rem;
	background: var(--cdr-bg-soft);
	border: 1px solid var(--cdr-border);
	border-radius: var(--cdr-radius-sm);
	animation: cdr-fade-in 0.25s ease;
}

.cdr-file-preview-info {
	display: flex;
	flex-direction: column;
	gap: 0.15rem;
	min-width: 0;
}

.cdr-file-name {
	font-size: 0.9rem;
	font-weight: 600;
	color: var(--cdr-text);
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}

.cdr-file-size {
	font-size: 0.78rem;
	color: var(--cdr-text-muted);
}

.cdr-remove-file {
	background: transparent;
	border: none;
	color: var(--cdr-text-muted);
	font-size: 1.4rem;
	line-height: 1;
	cursor: pointer;
	padding: 0.25rem 0.5rem;
	border-radius: 50%;
	transition: background 0.2s ease, color 0.2s ease;
}

.cdr-remove-file:hover,
.cdr-remove-file:focus-visible {
	background: color-mix(in srgb, var(--cdr-error) 12%, transparent);
	color: var(--cdr-error);
	outline: none;
}

.cdr-progress {
	margin-top: 1rem;
	display: flex;
	align-items: center;
	gap: 0.75rem;
	animation: cdr-fade-in 0.25s ease;
}

.cdr-progress-bar {
	flex: 1;
	height: 8px;
	background: var(--cdr-border);
	border-radius: 999px;
	overflow: hidden;
}

.cdr-progress-fill {
	height: 100%;
	width: 0%;
	background: var(--cdr-gradient);
	border-radius: 999px;
	transition: width 0.2s ease;
}

.cdr-progress-text {
	font-size: 0.78rem;
	color: var(--cdr-text-muted);
	min-width: 2.5em;
	text-align: right;
}

.cdr-submit-btn {
	position: relative;
	width: 100%;
	margin-top: 1.5rem;
	padding: 0.9rem 1.5rem;
	border: none;
	border-radius: var(--cdr-radius-sm);
	background: var(--cdr-gradient);
	color: #fff;
	font-size: 1rem;
	font-weight: 600;
	cursor: pointer;
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 0.6rem;
	transition: transform 0.15s ease, box-shadow 0.25s ease, opacity 0.2s ease;
	box-shadow: 0 8px 24px color-mix(in srgb, var(--cdr-primary) 35%, transparent);
}

.cdr-submit-btn:hover:not(:disabled) {
	transform: translateY(-2px);
	box-shadow: 0 12px 30px color-mix(in srgb, var(--cdr-primary) 45%, transparent);
}

.cdr-submit-btn:active:not(:disabled) {
	transform: translateY(0);
}

.cdr-submit-btn:disabled {
	opacity: 0.5;
	cursor: not-allowed;
	box-shadow: none;
}

.cdr-btn-spinner {
	width: 16px;
	height: 16px;
	border: 2px solid rgba(255, 255, 255, 0.4);
	border-top-color: #fff;
	border-radius: 50%;
	animation: cdr-spin 0.7s linear infinite;
}

.cdr-status {
	margin-top: 1.25rem;
}

.cdr-status:empty {
	margin-top: 0;
}

.cdr-status-card {
	display: flex;
	align-items: flex-start;
	gap: 0.75rem;
	padding: 0.9rem 1.1rem;
	border-radius: var(--cdr-radius-sm);
	font-size: 0.9rem;
	line-height: 1.5;
	animation: cdr-fade-in 0.3s ease;
}

.cdr-status-success {
	background: color-mix(in srgb, var(--cdr-success) 12%, transparent);
	color: var(--cdr-success);
	border: 1px solid color-mix(in srgb, var(--cdr-success) 30%, transparent);
}

.cdr-status-error {
	background: color-mix(in srgb, var(--cdr-error) 10%, transparent);
	color: var(--cdr-error);
	border: 1px solid color-mix(in srgb, var(--cdr-error) 28%, transparent);
}

.cdr-download-btn {
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
	margin-top: 0.75rem;
	padding: 0.6rem 1.1rem;
	background: var(--cdr-success);
	color: #fff;
	text-decoration: none;
	border-radius: var(--cdr-radius-sm);
	font-weight: 600;
	font-size: 0.85rem;
	transition: opacity 0.2s ease;
}

.cdr-download-btn:hover {
	opacity: 0.9;
	color: #fff;
}

.cdr-footer-text {
	text-align: center;
	margin-top: 1rem;
	font-size: 0.78rem;
	color: var(--cdr-text-muted);
}

@keyframes cdr-fade-in {
	from {
		opacity: 0;
		transform: translateY(4px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

@keyframes cdr-spin {
	to {
		transform: rotate(360deg);
	}
}

@media (max-width: 480px) {
	.cdr-converter-widget {
		margin: 1rem auto;
	}

	.cdr-file-preview {
		flex-wrap: wrap;
	}
}

/* Respect users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
	.cdr-converter-widget * {
		animation-duration: 0.001ms !important;
		transition-duration: 0.001ms !important;
	}
}