:root {
	--bg: #0f1116;
	--panel: #1a1e28;
	--text: #e8eaef;
	--muted: #9aa3b5;
	--accent: #5b8def;
	--border: #2c3344;
}

* {
	box-sizing: border-box;
}

body {
	margin: 0;
	min-height: 100vh;
	font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
	background: var(--bg);
	color: var(--text);
	line-height: 1.5;
}

header,
main,
footer {
	max-width: 42rem;
	margin: 0 auto;
	padding: 1.25rem 1.5rem;
}

body.drag-over::before {
	content: '';
	position: fixed;
	inset: 0.75rem;
	border: 2px dashed var(--accent);
	border-radius: 0.75rem;
	pointer-events: none;
	z-index: 9999;
}

header h1 {
	margin: 0 0 0.25rem;
	font-size: 1.75rem;
	font-weight: 650;
}

.tagline {
	margin: 0;
	color: var(--muted);
	font-size: 0.95rem;
}

.panel {
	background: var(--panel);
	border: 1px solid var(--border);
	border-radius: 0.75rem;
	padding: 1.25rem;
	margin-bottom: 1rem;
}

.panel h2 {
	margin: 0 0 1rem;
	font-size: 1.1rem;
}

.file-label input[type="file"] {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	border: 0;
}

.file-button {
	display: inline-block;
	padding: 0.5rem 1rem;
	background: var(--accent);
	color: #fff;
	border-radius: 0.4rem;
	cursor: pointer;
	font-weight: 500;
}

.file-button:hover {
	filter: brightness(1.08);
}

.meta,
.status {
	font-size: 0.875rem;
	color: var(--muted);
	margin: 0.75rem 0 0;
}

.status.processing {
	color: var(--accent);
}

.params {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 1rem;
	margin: 1rem 0;
}

.params label {
	display: flex;
	flex-direction: column;
	gap: 0.35rem;
	font-size: 0.85rem;
	color: var(--muted);
}

.params input[type="number"] {
	padding: 0.4rem 0.5rem;
	border: 1px solid var(--border);
	border-radius: 0.35rem;
	background: var(--bg);
	color: var(--text);
	font: inherit;
}

button {
	padding: 0.5rem 1rem;
	border: 1px solid var(--border);
	border-radius: 0.4rem;
	background: var(--bg);
	color: var(--text);
	font: inherit;
	cursor: pointer;
}

button:disabled {
	opacity: 0.45;
	cursor: not-allowed;
}

button:not(:disabled):hover {
	border-color: var(--accent);
}

#process-btn {
	margin-top: 0.5rem;
	background: var(--accent);
	border-color: transparent;
	color: #fff;
}

#process-btn:not(:disabled):hover {
	filter: brightness(1.08);
}

progress {
	display: block;
	width: 100%;
	margin-top: 0.75rem;
	height: 0.35rem;
}

.controls {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 0.75rem;
	margin-bottom: 0.5rem;
}

.slider-label {
	display: flex;
	align-items: center;
	gap: 0.5rem;
	font-size: 0.85rem;
	color: var(--muted);
}

.slider-label input {
	width: 6rem;
}

.time {
	font-size: 0.8rem;
	color: var(--muted);
	font-variant-numeric: tabular-nums;
}

.seek {
	width: 100%;
	margin: 0;
}

footer {
	font-size: 0.8rem;
	color: var(--muted);
}

footer a {
	color: var(--accent);
}