@import url("https://cdnjs.cloudflare.com/ajax/libs/JetBrains-Mono/2.304/css/jetbrains-mono.min.css");
@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap");

:root {
	--bg: #f5f4f0;
	--panel: #ffffff;
	--ink: #16171a;
	--muted: #7d8085;
	--line: #e3e1da;
	--accent: #4f46e5;
	--accent-ink: #ffffff;
	--good: #1e8e5a;
	--radius: 10px;
}

* {
	box-sizing: border-box;
}
html,
body {
	margin: 0;
	padding: 0;
}
body {
	background: var(--bg);
	background-image:
		linear-gradient(var(--line) 1px, transparent 1px),
		linear-gradient(90deg, var(--line) 1px, transparent 1px);
	background-size: 28px 28px;
	background-position: -1px -1px;
	color: var(--ink);
	font-family: "Space Grotesk", ui-sans-serif, system-ui, sans-serif;
	min-height: 100vh;
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 40px 20px;
}

.wrap {
	width: 100%;
	max-width: 1100px;
}

.eyebrow {
	font-family: "JetBrains Mono", monospace;
	font-size: 12px;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	color: var(--muted);
	display: flex;
	align-items: center;
	gap: 8px;
	margin-bottom: 10px;
}
.eyebrow::before {
	content: "";
	width: 7px;
	height: 7px;
	background: var(--accent);
	display: inline-block;
	border-radius: 1px;
	transform: rotate(45deg);
}

h1 {
	font-size: 30px;
	font-weight: 700;
	letter-spacing: -0.02em;
	margin: 0 0 4px;
}
.sub {
	color: var(--muted);
	font-size: 14.5px;
	margin: 0 0 28px;
}

.card {
	background: var(--panel);
	border: 1px solid var(--line);
	border-radius: var(--radius);
	box-shadow:
		0 1px 2px rgba(20, 20, 20, 0.03),
		0 12px 32px -18px rgba(20, 20, 20, 0.18);
	overflow: hidden;
}

/* segmented mode toggle */
.mode-row {
	display: flex;
	padding: 14px;
	border-bottom: 1px solid var(--line);
	gap: 6px;
}
.mode-btn {
	flex: 1;
	font-family: "JetBrains Mono", monospace;
	font-size: 13px;
	font-weight: 500;
	padding: 10px 12px;
	border-radius: 7px;
	border: 1px solid transparent;
	background: transparent;
	color: var(--muted);
	cursor: pointer;
	transition: all 0.15s ease;
	letter-spacing: 0.02em;
}
.mode-btn:hover {
	color: var(--ink);
}
.mode-btn.active {
	background: var(--ink);
	color: #fff;
}

.field {
	padding: 18px 18px 6px;
}
.field-label {
	font-family: "JetBrains Mono", monospace;
	font-size: 11px;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--muted);
	margin-bottom: 8px;
	display: flex;
	justify-content: space-between;
}

textarea,
.output {
	width: 100%;
	min-height: 110px;
	background: #fbfbfa;
	border: 1px solid var(--line);
	border-radius: 8px;
	padding: 12px 13px;
	font-family: "JetBrains Mono", monospace;
	font-size: 13.5px;
	line-height: 1.55;
	color: var(--ink);
	resize: vertical;
	outline: none;
	transition: border-color 0.15s ease;
}
textarea:focus {
	border-color: var(--accent);
}
textarea::placeholder {
	color: #b7b9bd;
}

.output {
	white-space: pre-wrap;
	word-break: break-all;
	cursor: text;
	min-height: 90px;
}
.output.empty {
	color: #b7b9bd;
}
.output.error {
	color: #c0392b;
}

/* the transcoding rail — signature element */
.rail {
	margin: 4px 18px 2px;
	height: 30px;
	display: flex;
	align-items: center;
	gap: 3px;
	overflow: hidden;
}
.rail-dot {
	width: 4px;
	height: 4px;
	border-radius: 50%;
	background: var(--line);
	flex-shrink: 0;
	transition:
		background 0.4s ease,
		transform 0.4s ease;
}
.rail-dot.lit {
	background: var(--accent);
}

.actions {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 14px 18px 18px;
}
.btn-group {
	display: flex;
	gap: 8px;
}
button.act {
	font-family: "Space Grotesk", sans-serif;
	font-weight: 600;
	font-size: 13.5px;
	padding: 9px 16px;
	border-radius: 7px;
	border: 1px solid var(--line);
	background: #fff;
	color: var(--ink);
	cursor: pointer;
	transition: all 0.15s ease;
}
button.act:hover {
	border-color: #c9c7be;
	background: #fafaf8;
}
button.act.primary {
	background: var(--accent);
	border-color: var(--accent);
	color: var(--accent-ink);
}
button.act.primary:hover {
	background: #4338ca;
}
button.act.copy.copied {
	background: var(--good);
	border-color: var(--good);
	color: #fff;
}

.meta {
	font-family: "JetBrains Mono", monospace;
	font-size: 11.5px;
	color: var(--muted);
	display: flex;
	gap: 14px;
}

.footer-note {
	text-align: center;
	font-size: 12px;
	color: var(--muted);
	margin-top: 18px;
	font-family: "JetBrains Mono", monospace;
}

@media (max-width: 480px) {
	h1 {
		font-size: 24px;
	}
	.actions {
		flex-direction: column;
		align-items: stretch;
		gap: 12px;
	}
	.meta {
		justify-content: center;
	}
}

@media (prefers-reduced-motion: reduce) {
	.rail-dot {
		transition: none;
	}
}

.seo-content {
	margin-top: 70px;
	padding: 0 4px;
}

.seo-content h2 {
	font-size: 20px;
	font-weight: 700;
	margin: 32px 0 10px;
	letter-spacing: -0.01em;
}

.seo-content h2:first-child {
	margin-top: 0;
}

.seo-content p,
.seo-content li {
	color: var(--muted);
	font-size: 14px;
	line-height: 1.7;
}

.seo-content ol {
	padding-left: 22px;
}

.seo-content strong {
	color: var(--ink);
}
@media (max-width: 768px) {
	.content-layout {
		grid-template-columns: 1fr;
		gap: 40px;
	}

	.seo-content {
		order: 2;
	}

	.tool-section {
		order: 1;
	}
}

.content-layout {
	display: grid;
	grid-template-columns: 1fr 1.1fr;
	gap: 60px;
	align-items: start;
}

.seo-content {
	padding-top: 10px;
}

.tool-section {
	width: 100%;
}