:root {
	--bg: #f4f7fb;
	--panel: #ffffff;
	--ink: #0f172a;
	--muted: #5b6472;
	--line: #d9e2ec;
	--accent: #0ea5a4;
	--accent-2: #1363df;
	--danger: #b42318;
	--shadow: 0 20px 40px rgba(13, 42, 89, 0.12);
}

* {
	box-sizing: border-box;
}

body {
	margin: 0;
	font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
	color: var(--ink);
	background:
		radial-gradient(circle at 8% 10%, rgba(14, 165, 164, 0.14), transparent 42%),
		radial-gradient(circle at 92% 88%, rgba(19, 99, 223, 0.14), transparent 38%),
		var(--bg);
}

.hero {
	padding: 24px 28px 10px;
}

h1 {
	font-family: "Space Grotesk", "Trebuchet MS", sans-serif;
	font-size: clamp(1.5rem, 2.2vw, 2.2rem);
	margin: 0;
	letter-spacing: 0.01em;
}

.subtitle {
	margin: 8px 0 0;
	color: var(--muted);
	font-size: 0.98rem;
}

.app-layout {
	display: flex;
	gap: 20px;
	padding: 8px 20px 22px;
	align-items: flex-start;
}

.canvas-panel,
.controls-panel {
	background: var(--panel);
	border: 1px solid var(--line);
	border-radius: 16px;
	box-shadow: var(--shadow);
	padding: 16px;
}

.canvas-panel {
	flex: 1 1 auto;
	min-width: 0;
	overflow: auto;
}

canvas {
	display: block;
	width: 100%;
	height: auto;
	min-width: 640px;
	border-radius: 10px;
	background: linear-gradient(180deg, #fbfdff, #f3f7fc);
	border: 1px solid #d8e5f3;
}

p.status {
	margin: 0 0 10px;
	min-height: 21px;
	color: var(--danger);
	font-weight: 600;
}

.canvas-help {
	margin: 0 0 8px;
	font-size: 0.82rem;
	color: #5b6472;
}

.controls-panel {
	width: 520px;
	max-width: 100%;
}

fieldset {
	margin: 0 0 14px;
	padding: 12px;
	border: 1px solid var(--line);
	border-radius: 12px;
	background: linear-gradient(180deg, #ffffff, #f8fbff);
}

legend {
	font-family: "Space Grotesk", "Trebuchet MS", sans-serif;
	font-weight: 700;
	padding: 0 8px;
}

label {
	font-size: 0.88rem;
	color: #243046;
}

input {
	width: 100%;
	height: 34px;
	padding: 4px 8px;
	border: 1px solid #c8d3e2;
	border-radius: 8px;
	background: #fff;
}

select {
	width: 100%;
	height: 34px;
	padding: 4px 8px;
	border: 1px solid #c8d3e2;
	border-radius: 8px;
	background: #fff;
	font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
	font-size: 0.9rem;
}

textarea {
	width: 100%;
	min-height: 44px;
	padding: 6px 8px;
	border: 1px solid #c8d3e2;
	border-radius: 8px;
	background: #fff;
	font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
	font-size: 0.9rem;
	line-height: 1.2;
	resize: vertical;
}

input.grid {
	width: 20px;
	height: 20px;
	vertical-align: middle;
	margin-left: 8px;
}

.agrid {
	display: inline-block;
	font-weight: 600;
}

.inline-grid {
	display: grid;
	gap: 8px;
	align-items: center;
}

.three-cols {
	grid-template-columns: minmax(110px, 1fr) 72px;
}

.boxes-container {
	margin-top: 10px;
	display: grid;
	gap: 10px;
}

.box-row {
	border: 1px solid #d5e1ee;
	border-radius: 10px;
	padding: 10px;
	background: #fff;
}

.box-head {
	display: flex;
	justify-content: space-between;
	align-items: center;
	margin-bottom: 8px;
}

.box-title {
	font-family: "Space Grotesk", "Trebuchet MS", sans-serif;
	font-size: 0.96rem;
}

.box-grid {
	display: grid;
	grid-template-columns: 1fr 70px;
	gap: 6px 8px;
	align-items: center;
}

.labels-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 10px;
}

.xlabel,
.ylabel,
.zlabel {
	display: grid;
	grid-template-columns: 1fr;
	gap: 6px;
	padding: 8px;
	border: 1px solid #dde6f2;
	border-radius: 10px;
	background: #fff;
}

.xlabel label,
.ylabel label,
.zlabel label {
	font-size: 0.8rem;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.03em;
	color: #4a596f;
}

.actions {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 10px;
}

button {
	border: 0;
	border-radius: 10px;
	height: 36px;
	font-family: "Space Grotesk", "Trebuchet MS", sans-serif;
	font-weight: 700;
	letter-spacing: 0.01em;
	cursor: pointer;
	transition: transform 140ms ease, filter 140ms ease;
}

.button,
.labelz,
.addbox {
	background: linear-gradient(135deg, var(--accent-2), #0b5fcf);
	color: #fff;
}

.resetview,
.savejson,
.loadjson {
	background: linear-gradient(135deg, #23395d, #1b2f4e);
	color: #fff;
}

.makeimage {
	background: linear-gradient(135deg, var(--accent), #0f8f8f);
	color: #fff;
}

.remove-box {
	height: 30px;
	padding: 0 10px;
	font-size: 0.78rem;
	background: #fff4f2;
	border: 1px solid #f2c7c0;
	color: #8f1d12;
}

button:hover {
	transform: translateY(-1px);
	filter: brightness(1.03);
}

footer {
	text-align: center;
	padding: 0 0 18px;
	color: #66758b;
	font-size: 0.88rem;
}

@media (max-width: 1280px) {
	.app-layout {
		flex-direction: column;
	}

	.controls-panel {
		width: 100%;
	}

	canvas {
		min-width: 0;
	}
}

@media (max-width: 840px) {
	.labels-grid {
		grid-template-columns: 1fr;
	}

	.actions {
		grid-template-columns: 1fr;
	}
}