:root {
	--bg: #f5f7fb;
	--card: #ffffff;
	--text: #1d1d1f;
	--muted: #4d4d52;
	--primary: #0a84ff;
	--primary-strong: #0066cc;
	--ok: #2e7d32;
	--bad: #b00020;
	--border: #d7dbe4;
}

* {
	box-sizing: border-box;
}

body {
	margin: 0;
	font-family: "SF Pro Text", "Avenir Next", system-ui, -apple-system, sans-serif;
	background: radial-gradient(circle at 20% -10%, #deecff 0%, #f5f7fb 55%);
	color: var(--text);
	line-height: 1.5;
}

.hero {
	padding: 2rem 1rem 1rem;
}

.hero-inner {
	max-width: 980px;
	margin: 0 auto;
}

.eyebrow {
	margin: 0;
	text-transform: uppercase;
	letter-spacing: 0.08em;
	color: var(--muted);
	font-size: 0.78rem;
}

h1 {
	margin: 0.25rem 0;
	font-size: clamp(1.8rem, 3vw, 2.8rem);
}

.hero-copy {
	margin: 0;
	color: var(--muted);
	max-width: 65ch;
}

.toolbar {
	display: flex;
	gap: 0.75rem;
	align-items: center;
	margin-top: 1rem;
}

.layout {
	max-width: 980px;
	margin: 0 auto;
	padding: 0 1rem 2rem;
	display: grid;
	gap: 1rem;
	grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card {
	background: var(--card);
	border: 1px solid var(--border);
	border-radius: 18px;
	padding: 1rem;
	box-shadow: 0 10px 30px rgba(45, 65, 99, 0.08);
}

h2 {
	margin-top: 0;
}

.roadmap {
	padding-left: 1.25rem;
	margin: 0 0 1rem;
}

.roadmap li {
	margin: 0.4rem 0;
}

.roadmap li.done {
	color: var(--ok);
	font-weight: 600;
}

.grid {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: 0.75rem;
}

label {
	display: block;
	font-size: 0.88rem;
	font-weight: 600;
	margin-bottom: 0.2rem;
}

input,
select,
button {
	font: inherit;
}

input,
select {
	width: 100%;
	padding: 0.5rem;
	border-radius: 10px;
	border: 1px solid var(--border);
	background: #fff;
}

.actions {
	display: flex;
	gap: 0.6rem;
	margin-top: 0.8rem;
	flex-wrap: wrap;
}

button {
	padding: 0.55rem 0.8rem;
	border: 1px solid var(--border);
	background: #fff;
	border-radius: 10px;
	cursor: pointer;
}

button:focus-visible,
input:focus-visible,
select:focus-visible {
	outline: 2px solid var(--primary);
	outline-offset: 2px;
}

.primary {
	background: var(--primary);
	border-color: var(--primary);
	color: #fff;
}

.primary:hover {
	background: var(--primary-strong);
	border-color: var(--primary-strong);
}

.output {
	margin-top: 1rem;
	padding: 0.8rem;
	border-radius: 10px;
	background: #f2f6ff;
	min-height: 220px;
	overflow-x: auto;
	white-space: pre-wrap;
}

.quiz-options {
	display: grid;
	gap: 0.5rem;
}

.quiz-option {
	text-align: left;
}

.feedback.good {
	color: var(--ok);
	font-weight: 600;
}

.feedback.bad {
	color: var(--bad);
	font-weight: 600;
}

@media (max-width: 640px) {
	.grid {
		grid-template-columns: 1fr;
	}
}