*,
*::before,
*::after {
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}

:root {
	--bg: #0d0d12;
	--surface: #111118;
	--border: rgba(255, 255, 255, 0.07);
	--accent: #e8ff57;
	--accent2: #00d9ff;
	--text: #f0f0f5;
	--muted: rgba(255, 255, 255, 0.4);
	--mono: "DM Mono", monospace;
	--display: "Syne", sans-serif;
}

body {
	background: var(--bg);
	color: var(--text);
	font-family: var(--mono);
	min-height: 100vh;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: flex-start;
	padding: 48px 24px;
	gap: 32px;
}

header {
	text-align: center;
	display: flex;
	flex-direction: column;
	gap: 8px;
}

header h1 {
	font-family: var(--display);
	font-size: clamp(28px, 5vw, 48px);
	font-weight: 800;
	letter-spacing: -0.03em;
	color: var(--text);
}

header h1 span {
	color: var(--accent);
}

header p {
	font-size: 11px;
	letter-spacing: 0.15em;
	text-transform: uppercase;
	color: var(--muted);
}

.card {
	width: 100%;
	max-width: 860px;
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: 20px;
	padding: 32px;
}

.dropzone {
	border: 1.5px dashed rgba(255, 255, 255, 0.15);
	border-radius: 14px;
	padding: 48px 24px;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 14px;
	cursor: pointer;
	transition:
		border-color 0.2s,
		background 0.2s;
	position: relative;
	overflow: hidden;
}

.dropzone:hover,
.dropzone.drag {
	border-color: var(--accent);
	background: rgba(232, 255, 87, 0.03);
}

.dropzone input[type="file"] {
	position: absolute;
	inset: 0;
	opacity: 0;
	cursor: pointer;
	width: 100%;
	height: 100%;
}

.dropzone-icon {
	width: 48px;
	height: 48px;
	border: 1.5px solid rgba(255, 255, 255, 0.15);
	border-radius: 12px;
	display: flex;
	align-items: center;
	justify-content: center;
	color: var(--muted);
}

.dropzone-icon svg {
	width: 22px;
	height: 22px;
}

.dropzone p {
	font-size: 12px;
	color: var(--muted);
	letter-spacing: 0.08em;
	text-align: center;
}

.dropzone p strong {
	color: var(--accent);
	font-weight: 500;
}

/* CONTROLS */
.controls {
	display: flex;
	flex-direction: column;
	gap: 20px;
	margin-top: 24px;
}

.ctrl-row {
	display: flex;
	align-items: center;
	gap: 16px;
}

.ctrl-label {
	font-size: 10px;
	letter-spacing: 0.15em;
	text-transform: uppercase;
	color: var(--muted);
	width: 120px;
	flex-shrink: 0;
}

input[type="range"] {
	flex: 1;
	-webkit-appearance: none;
	height: 2px;
	background: rgba(255, 255, 255, 0.1);
	border-radius: 2px;
	outline: none;
	cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
	-webkit-appearance: none;
	width: 16px;
	height: 16px;
	border-radius: 50%;
	background: var(--accent);
	cursor: pointer;
	box-shadow: 0 0 10px rgba(232, 255, 87, 0.4);
}

.ctrl-val {
	font-size: 12px;
	font-weight: 500;
	color: var(--accent);
	min-width: 48px;
	text-align: right;
}

/* PALETTE */
.palette-grid {
	display: flex;
	flex-wrap: wrap;
	gap: 6px;
	flex: 1;
}

.pal-btn {
	width: 28px;
	height: 28px;
	border-radius: 6px;
	border: 2px solid transparent;
	cursor: pointer;
	transition:
		transform 0.15s,
		border-color 0.15s;
}

.pal-btn:hover {
	transform: scale(1.15);
}

.pal-btn.active {
	border-color: var(--accent);
}

/* PREVIEW */
.preview-area {
	display: none;
	flex-direction: column;
	gap: 20px;
	margin-top: 24px;
}

.preview-area.visible {
	display: flex;
}

.preview-grid {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 16px;
}

.preview-box {
	display: flex;
	flex-direction: column;
	gap: 8px;
}

.preview-label {
	font-size: 10px;
	letter-spacing: 0.15em;
	text-transform: uppercase;
	color: var(--muted);
}

.preview-box canvas,
.preview-box img {
	width: 100%;
	border-radius: 10px;
	border: 1px solid var(--border);
	image-rendering: pixelated;
	display: block;
}

.btn-row {
	display: flex;
	gap: 10px;
	flex-wrap: wrap;
}

.btn {
	font-family: var(--mono);
	font-size: 11px;
	letter-spacing: 0.1em;
	text-transform: uppercase;
	padding: 12px 24px;
	border-radius: 100px;
	border: none;
	cursor: pointer;
	transition:
		transform 0.15s,
		box-shadow 0.15s;
	font-weight: 500;
}

.btn:active {
	transform: scale(0.97);
}

.btn-primary {
	background: var(--accent);
	color: #0a0a0f;
	box-shadow: 0 0 20px rgba(232, 255, 87, 0.2);
}

.btn-primary:hover {
	box-shadow: 0 0 30px rgba(232, 255, 87, 0.35);
}

.btn-secondary {
	background: transparent;
	color: var(--text);
	border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-secondary:hover {
	background: rgba(255, 255, 255, 0.05);
}

.btn-dl {
	background: var(--accent2);
	color: #0a0a0f;
	box-shadow: 0 0 20px rgba(0, 217, 255, 0.2);
}

.btn-dl:hover {
	box-shadow: 0 0 30px rgba(0, 217, 255, 0.35);
}

.divider {
	height: 1px;
	background: var(--border);
	margin: 4px 0;
}

.status {
	font-size: 10px;
	letter-spacing: 0.1em;
	text-transform: uppercase;
	color: var(--muted);
	text-align: center;
	min-height: 16px;
}

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