:root {
	--bg: #0d0f12;
	--panel: #111418;
	--text: #d8dee9;
	--muted: #7f8894;
	--accent: #5eead4;
	--green: #a7f3d0;
	--mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
		"Liberation Mono", "Courier New", monospace;
}

* {
	box-sizing: border-box;
}

html,
body {
	height: 100%;
	margin: 0;
	overflow: hidden; /* prevent page scroll; terminal scrolls internally */
	background: radial-gradient(
		1200px 800px at 20% -10%,
		#1b2230 0%,
		#0d0f12 60%
	);
	color: var(--text);
	font-family: var(--mono);
}


#app {
	height: 100vh;
	/* Use dynamic viewport height on mobile browsers to avoid hidden areas under toolbars */
	height: 100dvh;
	max-width: 900px;
	margin: 0 auto;
	padding: 16px;
	display: grid;
	grid-template-rows: 1fr auto; /* terminal grows, prompt stays at bottom */
	gap: 10px;
}

.term {
	background: linear-gradient(#0e1116, #0b0d11);
	border: 1px solid #1a2230;
	border-radius: 12px;
	padding: 16px;
	min-height: 0; /* allow grid to control height */
	white-space: pre-wrap;
	overflow: auto;
	box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35),
		inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

#prompt {
	display: flex;
	gap: 8px;
	margin-top: 0;
	background: var(--panel);
	border: 1px solid #1b2330;
	border-radius: 12px;
	padding: 12px;
	align-items: center;
}

.ps1 {
	color: var(--accent);
}

#cmd {
	flex: 1;
	background: transparent;
	border: none;
	color: var(--text);
	outline: none;
	font-family: var(--mono);
	font-size: clamp(14px, 3.8vw, 16px);
}

.output .err {
	color: #fca5a5;
}
.output .ok {
	color: var(--green);
}
a {
	color: var(--green);
	text-decoration: none;
}
a:hover {
	text-decoration: underline;
}

/* Small-screen tweaks */
@media (max-width: 640px) {
	#app {
		padding: 8px;
		gap: 8px;
	}
	.term {
		padding: 12px;
		border-radius: 10px;
	}
	#prompt {
		padding: 10px;
		border-radius: 10px;
		gap: 6px;
	}
	.ps1 {
		font-size: 0.95rem;
	}
	#cmd {
		min-height: 44px; /* comfortable tap target */
	}
}