/* Ultimate PDF Converter — Frontend Styles */

.updfc-widget {
	--updfc-primary: #2563EB;
	--updfc-primary-hover: #1D4ED8;
	--updfc-secondary: #0EA5E9;
	--updfc-bg: #FFFFFF;
	--updfc-card: #F8FAFC;
	--updfc-border: #E5E7EB;
	--updfc-text: #111827;
	--updfc-success: #22C55E;
	--updfc-warning: #F59E0B;
	--updfc-danger: #EF4444;

	box-sizing: border-box;
	max-width: 720px;
	margin: 0 auto;
	padding: 40px;
	background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
	border: 1px solid var(--updfc-border);
	border-radius: 24px;
	box-shadow: 0 1px 3px rgba(17, 24, 39, 0.04), 0 20px 40px -20px rgba(37, 99, 235, 0.15);
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
	color: var(--updfc-text);
}

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

.updfc-header {
	text-align: center;
	margin-bottom: 28px;
}

.updfc-title {
	font-size: 28px;
	font-weight: 800;
	letter-spacing: -0.02em;
	margin: 0 0 8px;
	background: linear-gradient(90deg, var(--updfc-primary), var(--updfc-secondary));
	-webkit-background-clip: text;
	background-clip: text;
	-webkit-text-fill-color: transparent;
}

.updfc-subtitle {
	margin: 0;
	color: #6B7280;
	font-size: 15px;
}

/* Dropzone */
.updfc-dropzone {
	position: relative;
	border: 2px dashed var(--updfc-border);
	border-radius: 20px;
	padding: 48px 24px;
	text-align: center;
	background: rgba(248, 250, 252, 0.7);
	backdrop-filter: blur(6px);
	transition: border-color 0.25s ease, background 0.25s ease, transform 0.2s ease;
	cursor: pointer;
	outline: none;
}

.updfc-dropzone:hover,
.updfc-dropzone:focus-visible {
	border-color: var(--updfc-primary);
	background: rgba(37, 99, 235, 0.04);
}

.updfc-dropzone.is-dragover {
	border-color: var(--updfc-primary);
	background: rgba(37, 99, 235, 0.08);
	transform: scale(1.01);
}

.updfc-dropzone-icon {
	color: var(--updfc-primary);
	margin-bottom: 12px;
	display: inline-flex;
	animation: updfc-float 3s ease-in-out infinite;
}

@keyframes updfc-float {
	0%, 100% { transform: translateY(0); }
	50% { transform: translateY(-6px); }
}

.updfc-dropzone-text {
	font-size: 16px;
	font-weight: 500;
	color: #374151;
	margin: 0 0 16px;
}

.updfc-dropzone-hint {
	margin: 12px 0 0;
	font-size: 13px;
	color: #9CA3AF;
}

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

/* Buttons */
.updfc-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	border: none;
	border-radius: 12px;
	padding: 12px 24px;
	font-size: 15px;
	font-weight: 600;
	cursor: pointer;
	transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.2s ease;
	font-family: inherit;
	text-decoration: none;
}

.updfc-btn:active {
	transform: translateY(1px);
}

.updfc-btn:disabled {
	opacity: 0.6;
	cursor: not-allowed;
	transform: none;
}

.updfc-btn-primary {
	background: linear-gradient(135deg, var(--updfc-primary), var(--updfc-secondary));
	color: #fff;
	box-shadow: 0 8px 20px -6px rgba(37, 99, 235, 0.5);
}

.updfc-btn-primary:hover:not(:disabled) {
	background: linear-gradient(135deg, var(--updfc-primary-hover), var(--updfc-secondary));
	box-shadow: 0 10px 24px -6px rgba(37, 99, 235, 0.6);
}

.updfc-btn-secondary {
	background: #fff;
	color: var(--updfc-primary);
	border: 1.5px solid var(--updfc-border);
}

.updfc-btn-secondary:hover:not(:disabled) {
	border-color: var(--updfc-primary);
	background: rgba(37, 99, 235, 0.04);
}

.updfc-btn-large {
	width: 100%;
	padding: 15px 24px;
	font-size: 16px;
	margin-top: 8px;
}

/* Error message */
.updfc-error-message {
	margin: 16px 0 0;
	padding: 12px 16px;
	background: rgba(239, 68, 68, 0.08);
	border: 1px solid rgba(239, 68, 68, 0.25);
	color: var(--updfc-danger);
	border-radius: 10px;
	font-size: 14px;
	animation: updfc-shake 0.4s ease;
}

@keyframes updfc-shake {
	0%, 100% { transform: translateX(0); }
	25% { transform: translateX(-4px); }
	75% { transform: translateX(4px); }
}

/* File card */
.updfc-file-card {
	display: flex;
	align-items: center;
	gap: 14px;
	background: var(--updfc-card);
	border: 1px solid var(--updfc-border);
	border-radius: 14px;
	padding: 16px;
	margin-bottom: 24px;
}

.updfc-file-thumb {
	width: 48px;
	height: 48px;
	flex-shrink: 0;
	border-radius: 10px;
	background: linear-gradient(135deg, var(--updfc-primary), var(--updfc-secondary));
	color: #fff;
	display: flex;
	align-items: center;
	justify-content: center;
}

.updfc-file-info {
	flex: 1;
	min-width: 0;
}

.updfc-file-name {
	font-weight: 600;
	font-size: 14px;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}

.updfc-file-meta {
	font-size: 13px;
	color: #6B7280;
	margin-top: 2px;
}

.updfc-file-remove {
	background: none;
	border: none;
	color: #9CA3AF;
	cursor: pointer;
	padding: 6px;
	border-radius: 8px;
	display: flex;
	transition: color 0.15s ease, background 0.15s ease;
}

.updfc-file-remove:hover {
	color: var(--updfc-danger);
	background: rgba(239, 68, 68, 0.08);
}

/* Options grid */
.updfc-options-grid {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 20px;
	margin-bottom: 8px;
}

.updfc-option-group-wide {
	grid-column: 1 / -1;
}

.updfc-option-label {
	display: block;
	font-size: 13px;
	font-weight: 600;
	color: #374151;
	margin-bottom: 8px;
}

.updfc-select,
.updfc-input {
	width: 100%;
	padding: 11px 14px;
	border: 1.5px solid var(--updfc-border);
	border-radius: 10px;
	font-size: 14px;
	font-family: inherit;
	color: var(--updfc-text);
	background: #fff;
	transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.updfc-select:focus,
.updfc-input:focus {
	outline: none;
	border-color: var(--updfc-primary);
	box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.updfc-page-range-input {
	margin-top: 10px;
}

.updfc-choice-cards {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 10px;
}

.updfc-choice-cards-inline {
	grid-template-columns: 1fr 1fr;
}

.updfc-choice-card {
	display: flex;
	flex-direction: column;
	align-items: flex-start;
	gap: 2px;
	padding: 12px 14px;
	background: #fff;
	border: 1.5px solid var(--updfc-border);
	border-radius: 12px;
	cursor: pointer;
	transition: border-color 0.15s ease, background 0.15s ease, transform 0.1s ease;
	text-align: left;
	font-family: inherit;
}

.updfc-choice-card:hover {
	border-color: var(--updfc-primary);
	transform: translateY(-1px);
}

.updfc-choice-card.is-active {
	border-color: var(--updfc-primary);
	background: rgba(37, 99, 235, 0.06);
	box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.updfc-choice-title {
	font-weight: 700;
	font-size: 14px;
}

.updfc-choice-desc {
	font-size: 12px;
	color: #6B7280;
}

/* Progress stage */
.updfc-stage-progress {
	text-align: center;
	padding: 32px 0 8px;
}

.updfc-progress-spinner {
	width: 56px;
	height: 56px;
	margin: 0 auto 20px;
	border-radius: 50%;
	border: 4px solid rgba(37, 99, 235, 0.15);
	border-top-color: var(--updfc-primary);
	animation: updfc-spin 0.9s linear infinite;
}

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

.updfc-progress-status {
	font-weight: 600;
	font-size: 15px;
	margin-bottom: 16px;
}

.updfc-progress-bar-track {
	width: 100%;
	height: 10px;
	background: var(--updfc-card);
	border-radius: 999px;
	overflow: hidden;
	border: 1px solid var(--updfc-border);
}

.updfc-progress-bar-fill {
	height: 100%;
	width: 0%;
	background: linear-gradient(90deg, var(--updfc-primary), var(--updfc-secondary));
	border-radius: 999px;
	transition: width 0.4s ease;
	background-size: 200% 100%;
	animation: updfc-shimmer 1.5s linear infinite;
}

@keyframes updfc-shimmer {
	0% { background-position: 0% 0; }
	100% { background-position: -200% 0; }
}

.updfc-progress-percent {
	margin-top: 10px;
	font-size: 13px;
	color: #6B7280;
	font-weight: 600;
}

/* Results stage */
.updfc-stage-results {
	text-align: center;
	padding: 8px 0;
}

.updfc-success-badge {
	width: 64px;
	height: 64px;
	margin: 0 auto 16px;
	border-radius: 50%;
	background: rgba(34, 197, 94, 0.12);
	color: var(--updfc-success);
	display: flex;
	align-items: center;
	justify-content: center;
	animation: updfc-pop 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes updfc-pop {
	0% { transform: scale(0); opacity: 0; }
	100% { transform: scale(1); opacity: 1; }
}

.updfc-results-title {
	font-size: 20px;
	font-weight: 700;
	margin: 0 0 6px;
}

.updfc-results-sub {
	color: #6B7280;
	font-size: 14px;
	margin: 0 0 24px;
}

.updfc-results-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
	gap: 12px;
	margin-bottom: 24px;
	text-align: left;
}

.updfc-result-thumb {
	border: 1px solid var(--updfc-border);
	border-radius: 12px;
	overflow: hidden;
	background: var(--updfc-card);
	transition: transform 0.15s ease, box-shadow 0.15s ease;
	display: block;
	text-decoration: none;
	color: inherit;
}

.updfc-result-thumb:hover {
	transform: translateY(-2px);
	box-shadow: 0 8px 16px -8px rgba(17, 24, 39, 0.25);
}

.updfc-result-thumb img {
	width: 100%;
	height: 90px;
	object-fit: cover;
	display: block;
	background: #E5E7EB;
}

.updfc-result-thumb-label {
	font-size: 11px;
	padding: 6px 8px;
	color: #374151;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}

.updfc-results-actions {
	display: flex;
	gap: 12px;
	justify-content: center;
	flex-wrap: wrap;
}

/* Responsive */
@media (max-width: 640px) {
	.updfc-widget {
		padding: 24px 18px;
		border-radius: 18px;
	}

	.updfc-title {
		font-size: 22px;
	}

	.updfc-dropzone {
		padding: 32px 16px;
	}

	.updfc-options-grid {
		grid-template-columns: 1fr;
	}

	.updfc-results-actions {
		flex-direction: column;
	}

	.updfc-results-actions .updfc-btn {
		width: 100%;
	}
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
	.updfc-widget * {
		animation-duration: 0.001ms !important;
		animation-iteration-count: 1 !important;
		transition-duration: 0.001ms !important;
	}
}