:root {
	--bdk-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
	--bdk-font-size: 16px;
	--bdk-bg: #ffffff;
	--bdk-surface: #f8f9fc;
	--bdk-border: #e6e8f0;
	--bdk-text: #1c1e26;
	--bdk-text-muted: #6b7280;
	--bdk-accent: #4f46e5;
	--bdk-accent-hover: #4338ca;
	--bdk-accent-soft: #eef0fe;
	--bdk-success: #16a34a;
	--bdk-danger: #dc2626;
	--bdk-radius: 14px;
	--bdk-radius-sm: 10px;
	--bdk-shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 6px 20px -6px rgba(16, 24, 40, .10);
}

* { box-sizing: border-box; }

html, body {
	margin: 0;
	padding: 0;
	background: transparent;
	color: var(--bdk-text);
	font-family: var(--bdk-font);
	font-size: var(--bdk-font-size);
	-webkit-font-smoothing: antialiased;
}

button, input, select {
	font-family: inherit;
	font-size: inherit;
	color: inherit;
}

.bdk-app {
	max-width: 640px;
	margin: 0 auto;
	padding: 22px 20px 16px;
	background: var(--bdk-bg);
}

.bdk-header {
	display: flex;
	align-items: center;
	gap: 12px;
	margin-bottom: 18px;
}

.bdk-header-icon {
	flex: 0 0 auto;
	display: flex;
}

.bdk-header-text h1 {
	font-size: 1.15rem;
	font-weight: 700;
	margin: 0;
	line-height: 1.25;
}

.bdk-header-text p {
	margin: 2px 0 0;
	font-size: .85rem;
	color: var(--bdk-text-muted);
}

.bdk-step {
	animation: bdk-fade-in .35s ease;
}

@keyframes bdk-fade-in {
	from { opacity: 0; transform: translateY(6px); }
	to { opacity: 1; transform: translateY(0); }
}

.bdk-dropzone {
	border: 2px dashed var(--bdk-border);
	border-radius: var(--bdk-radius);
	padding: 40px 20px;
	text-align: center;
	cursor: pointer;
	color: var(--bdk-text-muted);
	transition: border-color .18s ease, background-color .18s ease, transform .12s ease;
	background: var(--bdk-surface);
}

.bdk-dropzone:hover,
.bdk-dropzone:focus-visible {
	border-color: var(--bdk-accent);
	background: var(--bdk-accent-soft);
	outline: none;
}

.bdk-dropzone.bdk-drag-over {
	border-color: var(--bdk-accent);
	background: var(--bdk-accent-soft);
	transform: scale(1.01);
}

.bdk-dropzone-icon {
	color: var(--bdk-accent);
	margin-bottom: 10px;
	display: flex;
	justify-content: center;
	animation: bdk-bob 2.6s ease-in-out infinite;
}

@keyframes bdk-bob {
	0%, 100% { transform: translateY(0); }
	50% { transform: translateY(-4px); }
}

.bdk-dropzone-title {
	margin: 0 0 4px;
	font-weight: 600;
	color: var(--bdk-text);
}

.bdk-dropzone-hint {
	margin: 0;
	font-size: .82rem;
	letter-spacing: .02em;
}

.bdk-error {
	color: var(--bdk-danger);
	background: #fef2f2;
	border: 1px solid #fecaca;
	padding: 10px 12px;
	border-radius: var(--bdk-radius-sm);
	font-size: .88rem;
	margin-top: 12px;
}

.bdk-file-card {
	display: flex;
	align-items: center;
	gap: 12px;
	padding: 12px;
	border: 1px solid var(--bdk-border);
	border-radius: var(--bdk-radius);
	background: var(--bdk-surface);
	margin-bottom: 18px;
}

.bdk-file-preview {
	width: 48px;
	height: 48px;
	border-radius: 10px;
	background: #fff;
	border: 1px solid var(--bdk-border);
	flex: 0 0 auto;
	background-size: cover;
	background-position: center;
	display: flex;
	align-items: center;
	justify-content: center;
	overflow: hidden;
	font-size: .65rem;
	color: var(--bdk-text-muted);
	text-transform: uppercase;
	font-weight: 700;
}

.bdk-file-meta { flex: 1 1 auto; min-width: 0; }

.bdk-file-name {
	margin: 0;
	font-weight: 600;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}

.bdk-file-sub {
	margin: 2px 0 0;
	font-size: .82rem;
	color: var(--bdk-text-muted);
}

.bdk-icon-btn {
	border: none;
	background: transparent;
	color: var(--bdk-text-muted);
	cursor: pointer;
	padding: 6px;
	border-radius: 8px;
	display: flex;
	transition: background-color .15s ease, color .15s ease;
}

.bdk-icon-btn:hover {
	background: #fff;
	color: var(--bdk-text);
}

.bdk-pdf-pages {
	display: flex;
	align-items: center;
	gap: 10px;
	margin-bottom: 16px;
	font-size: .88rem;
}

.bdk-pdf-pages select {
	padding: 6px 10px;
	border-radius: 8px;
	border: 1px solid var(--bdk-border);
	background: #fff;
}

.bdk-field { margin-bottom: 16px; }

.bdk-field > label {
	display: block;
	font-weight: 600;
	font-size: .88rem;
	margin-bottom: 8px;
}

.bdk-format-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(84px, 1fr));
	gap: 8px;
}

.bdk-format-btn {
	border: 1.5px solid var(--bdk-border);
	background: #fff;
	border-radius: var(--bdk-radius-sm);
	padding: 12px 6px;
	text-align: center;
	cursor: pointer;
	font-weight: 700;
	font-size: .85rem;
	letter-spacing: .02em;
	color: var(--bdk-text);
	transition: border-color .15s ease, background-color .15s ease, transform .1s ease;
}

.bdk-format-btn:hover:not(:disabled) {
	border-color: var(--bdk-accent);
	transform: translateY(-1px);
}

.bdk-format-btn[aria-pressed="true"] {
	border-color: var(--bdk-accent);
	background: var(--bdk-accent-soft);
	color: var(--bdk-accent);
}

.bdk-format-btn:disabled {
	opacity: .4;
	cursor: not-allowed;
}

.bdk-options {
	display: flex;
	flex-direction: column;
	gap: 14px;
	margin-bottom: 6px;
}

.bdk-option-row label {
	display: flex;
	justify-content: space-between;
	font-size: .85rem;
	font-weight: 600;
	margin-bottom: 6px;
}

.bdk-option-row .bdk-option-value {
	color: var(--bdk-accent);
	font-weight: 700;
}

.bdk-option-row input[type="range"] {
	width: 100%;
	accent-color: var(--bdk-accent);
}

.bdk-segmented {
	display: flex;
	border: 1px solid var(--bdk-border);
	border-radius: 999px;
	overflow: hidden;
	width: fit-content;
}

.bdk-segmented button {
	border: none;
	background: #fff;
	padding: 7px 14px;
	font-size: .82rem;
	font-weight: 600;
	cursor: pointer;
	color: var(--bdk-text-muted);
	transition: background-color .15s ease, color .15s ease;
}

.bdk-segmented button[aria-pressed="true"] {
	background: var(--bdk-accent);
	color: #fff;
}

.bdk-checkbox-row {
	display: flex;
	align-items: center;
	gap: 8px;
	font-size: .85rem;
}

.bdk-checkbox-row input { accent-color: var(--bdk-accent); }

.bdk-actions {
	display: flex;
	justify-content: flex-end;
	margin-top: 8px;
}

.bdk-actions-center {
	justify-content: center;
	flex-wrap: wrap;
	gap: 10px;
}

.bdk-btn {
	border: none;
	border-radius: 999px;
	padding: 11px 22px;
	font-weight: 700;
	font-size: .92rem;
	cursor: pointer;
	transition: background-color .15s ease, transform .1s ease, box-shadow .15s ease;
	text-decoration: none;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 6px;
}

.bdk-btn-primary {
	background: var(--bdk-accent);
	color: #fff;
	box-shadow: var(--bdk-shadow);
}

.bdk-btn-primary:hover:not(:disabled) {
	background: var(--bdk-accent-hover);
	transform: translateY(-1px);
}

.bdk-btn-primary:disabled {
	opacity: .45;
	cursor: not-allowed;
	transform: none;
}

.bdk-btn-ghost {
	background: transparent;
	color: var(--bdk-text-muted);
	border: 1.5px solid var(--bdk-border);
}

.bdk-btn-ghost:hover {
	color: var(--bdk-text);
	border-color: var(--bdk-text-muted);
}

.bdk-processing {
	text-align: center;
	padding: 46px 10px;
}

.bdk-spinner {
	width: 40px;
	height: 40px;
	margin: 0 auto 18px;
	border-radius: 50%;
	border: 3.5px solid var(--bdk-accent-soft);
	border-top-color: var(--bdk-accent);
	animation: bdk-spin .8s linear infinite;
}

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

.bdk-processing-text {
	font-weight: 600;
	margin: 0 0 18px;
	transition: opacity .2s ease;
}

.bdk-progress {
	max-width: 260px;
	margin: 0 auto;
	height: 6px;
	border-radius: 999px;
	background: var(--bdk-surface);
	overflow: hidden;
}

.bdk-progress-bar {
	height: 100%;
	width: 30%;
	border-radius: 999px;
	background: var(--bdk-accent);
	animation: bdk-progress-slide 1.1s ease-in-out infinite;
}

@keyframes bdk-progress-slide {
	0% { transform: translateX(-100%); }
	100% { transform: translateX(340%); }
}

.bdk-result-card { text-align: center; padding: 10px 4px; }

.bdk-result-icon {
	width: 56px;
	height: 56px;
	border-radius: 50%;
	background: #ecfdf3;
	color: var(--bdk-success);
	display: flex;
	align-items: center;
	justify-content: center;
	margin: 0 auto 14px;
	animation: bdk-pop .35s cubic-bezier(.34,1.56,.64,1);
}

@keyframes bdk-pop {
	from { transform: scale(.6); opacity: 0; }
	to { transform: scale(1); opacity: 1; }
}

.bdk-result-title {
	font-size: 1.05rem;
	font-weight: 700;
	margin: 0 0 4px;
}

.bdk-result-sub {
	margin: 0 0 16px;
	color: var(--bdk-text-muted);
	font-size: .9rem;
}

.bdk-result-preview {
	max-width: 220px;
	margin: 0 auto 18px;
}

.bdk-result-preview img {
	max-width: 100%;
	border-radius: 10px;
	border: 1px solid var(--bdk-border);
	display: block;
	margin: 0 auto;
}

.bdk-hint {
	font-size: .8rem;
	color: var(--bdk-text-muted);
	margin: 8px 0 0;
}

.bdk-footer {
	margin-top: 22px;
	text-align: center;
}

.bdk-footer p {
	font-size: .74rem;
	color: var(--bdk-text-muted);
	margin: 0;
}

@media (max-width: 420px) {
	.bdk-app { padding: 16px 14px 12px; }
	.bdk-dropzone { padding: 30px 14px; }
}

@media (prefers-reduced-motion: reduce) {
	*, *::before, *::after {
		animation-duration: .001ms !important;
		animation-iteration-count: 1 !important;
		transition-duration: .001ms !important;
	}
}